diff options
Diffstat (limited to 'merge-recursive.c')
| -rw-r--r-- | merge-recursive.c | 2738 |
1 files changed, 1513 insertions, 1225 deletions
diff --git a/merge-recursive.c b/merge-recursive.c index acc2f64a4e..10dca5644b 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -4,30 +4,40 @@ * The thieves were Alex Riesen and Johannes Schindelin, in June/July 2006 */ #include "cache.h" -#include "config.h" +#include "merge-recursive.h" + #include "advice.h" -#include "lockfile.h" -#include "cache-tree.h" -#include "object-store.h" -#include "repository.h" -#include "commit.h" +#include "alloc.h" +#include "attr.h" #include "blob.h" #include "builtin.h" -#include "tree-walk.h" +#include "cache-tree.h" +#include "commit.h" +#include "commit-reach.h" +#include "config.h" #include "diff.h" #include "diffcore.h" +#include "dir.h" +#include "ll-merge.h" +#include "lockfile.h" +#include "object-store.h" +#include "repository.h" +#include "revision.h" +#include "string-list.h" +#include "submodule.h" #include "tag.h" -#include "alloc.h" +#include "tree-walk.h" #include "unpack-trees.h" -#include "string-list.h" #include "xdiff-interface.h" -#include "ll-merge.h" -#include "attr.h" -#include "merge-recursive.h" -#include "dir.h" -#include "submodule.h" -#include "revision.h" -#include "commit-reach.h" + +struct merge_options_internal { + int call_depth; + int needed_rename_limit; + struct hashmap current_file_dir_set; + struct string_list df_conflict_file_set; + struct unpack_trees_options unpack_opts; + struct index_state orig_index; +}; struct path_hashmap_entry { struct hashmap_entry e; @@ -35,14 +45,16 @@ struct path_hashmap_entry { }; static int path_hashmap_cmp(const void *cmp_data, - const void *entry, - const void *entry_or_key, + const struct hashmap_entry *eptr, + const struct hashmap_entry *entry_or_key, const void *keydata) { - const struct path_hashmap_entry *a = entry; - const struct path_hashmap_entry *b = entry_or_key; + const struct path_hashmap_entry *a, *b; const char *key = keydata; + a = container_of(eptr, const struct path_hashmap_entry, e); + b = container_of(entry_or_key, const struct path_hashmap_entry, e); + if (ignore_case) return strcasecmp(a->path, key ? key : b->path); else @@ -54,6 +66,24 @@ static unsigned int path_hash(const char *path) return ignore_case ? strihash(path) : strhash(path); } +/* + * For dir_rename_entry, directory names are stored as a full path from the + * toplevel of the repository and do not include a trailing '/'. Also: + * + * dir: original name of directory being renamed + * non_unique_new_dir: if true, could not determine new_dir + * new_dir: final name of directory being renamed + * possible_new_dirs: temporary used to help determine new_dir; see comments + * in get_directory_renames() for details + */ +struct dir_rename_entry { + struct hashmap_entry ent; + char *dir; + unsigned non_unique_new_dir:1; + struct strbuf new_dir; + struct string_list possible_new_dirs; +}; + static struct dir_rename_entry *dir_rename_find_entry(struct hashmap *hashmap, char *dir) { @@ -61,18 +91,20 @@ static struct dir_rename_entry *dir_rename_find_entry(struct hashmap *hashmap, if (dir == NULL) return NULL; - hashmap_entry_init(&key, strhash(dir)); + hashmap_entry_init(&key.ent, strhash(dir)); key.dir = dir; - return hashmap_get(hashmap, &key, NULL); + return hashmap_get_entry(hashmap, &key, ent, NULL); } static int dir_rename_cmp(const void *unused_cmp_data, - const void *entry, - const void *entry_or_key, + const struct hashmap_entry *eptr, + const struct hashmap_entry *entry_or_key, const void *unused_keydata) { - const struct dir_rename_entry *e1 = entry; - const struct dir_rename_entry *e2 = entry_or_key; + const struct dir_rename_entry *e1, *e2; + + e1 = container_of(eptr, const struct dir_rename_entry, ent); + e2 = container_of(entry_or_key, const struct dir_rename_entry, ent); return strcmp(e1->dir, e2->dir); } @@ -85,148 +117,177 @@ static void dir_rename_init(struct hashmap *map) static void dir_rename_entry_init(struct dir_rename_entry *entry, char *directory) { - hashmap_entry_init(entry, strhash(directory)); + hashmap_entry_init(&entry->ent, strhash(directory)); entry->dir = directory; entry->non_unique_new_dir = 0; strbuf_init(&entry->new_dir, 0); string_list_init(&entry->possible_new_dirs, 0); } +struct collision_entry { + struct hashmap_entry ent; + char *target_file; + struct string_list source_files; + unsigned reported_already:1; +}; + static struct collision_entry *collision_find_entry(struct hashmap *hashmap, char *target_file) { struct collision_entry key; - hashmap_entry_init(&key, strhash(target_file)); + hashmap_entry_init(&key.ent, strhash(target_file)); key.target_file = target_file; - return hashmap_get(hashmap, &key, NULL); + return hashmap_get_entry(hashmap, &key, ent, NULL); } -static int collision_cmp(void *unused_cmp_data, - const struct collision_entry *e1, - const struct collision_entry *e2, +static int collision_cmp(const void *unused_cmp_data, + const struct hashmap_entry *eptr, + const struct hashmap_entry *entry_or_key, const void *unused_keydata) { + const struct collision_entry *e1, *e2; + + e1 = container_of(eptr, const struct collision_entry, ent); + e2 = container_of(entry_or_key, const struct collision_entry, ent); + return strcmp(e1->target_file, e2->target_file); } static void collision_init(struct hashmap *map) { - hashmap_init(map, (hashmap_cmp_fn) collision_cmp, NULL, 0); + hashmap_init(map, collision_cmp, NULL, 0); } -static void flush_output(struct merge_options *o) +static void flush_output(struct merge_options *opt) { - if (o->buffer_output < 2 && o->obuf.len) { - fputs(o->obuf.buf, stdout); - strbuf_reset(&o->obuf); + if (opt->buffer_output < 2 && opt->obuf.len) { + fputs(opt->obuf.buf, stdout); + strbuf_reset(&opt->obuf); } } -static int err(struct merge_options *o, const char *err, ...) +static int err(struct merge_options *opt, const char *err, ...) { va_list params; - if (o->buffer_output < 2) - flush_output(o); + if (opt->buffer_output < 2) + flush_output(opt); else { - strbuf_complete(&o->obuf, '\n'); - strbuf_addstr(&o->obuf, "error: "); + strbuf_complete(&opt->obuf, '\n'); + strbuf_addstr(&opt->obuf, "error: "); } va_start(params, err); - strbuf_vaddf(&o->obuf, err, params); + strbuf_vaddf(&opt->obuf, err, params); va_end(params); - if (o->buffer_output > 1) - strbuf_addch(&o->obuf, '\n'); + if (opt->buffer_output > 1) + strbuf_addch(&opt->obuf, '\n'); else { - error("%s", o->obuf.buf); - strbuf_reset(&o->obuf); + error("%s", opt->obuf.buf); + strbuf_reset(&opt->obuf); } return -1; } -static struct tree *shift_tree_object(struct tree *one, struct tree *two, +static struct tree *shift_tree_object(struct repository *repo, + struct tree *one, struct tree *two, const char *subtree_shift) { struct object_id shifted; if (!*subtree_shift) { - shift_tree(&one->object.oid, &two->object.oid, &shifted, 0); + shift_tree(repo, &one->object.oid, &two->object.oid, &shifted, 0); } else { - shift_tree_by(&one->object.oid, &two->object.oid, &shifted, + shift_tree_by(repo, &one->object.oid, &two->object.oid, &shifted, subtree_shift); } if (oideq(&two->object.oid, &shifted)) return two; - return lookup_tree(the_repository, &shifted); + return lookup_tree(repo, &shifted); } -static struct commit *make_virtual_commit(struct tree *tree, const char *comment) +static inline void set_commit_tree(struct commit *c, struct tree *t) { - struct commit *commit = alloc_commit_node(the_repository); + c->maybe_tree = t; +} + +static struct commit *make_virtual_commit(struct repository *repo, + struct tree *tree, + const char *comment) +{ + struct commit *commit = alloc_commit_node(repo); set_merge_remote_desc(commit, comment, (struct object *)commit); - commit->maybe_tree = tree; + set_commit_tree(commit, tree); commit->object.parsed = 1; return commit; } -/* - * Since we use get_tree_entry(), which does not put the read object into - * the object pool, we cannot rely on a == b. - */ -static int oid_eq(const struct object_id *a, const struct object_id *b) -{ - if (!a && !b) - return 2; - return a && b && oideq(a, b); -} - enum rename_type { RENAME_NORMAL = 0, RENAME_VIA_DIR, + RENAME_ADD, RENAME_DELETE, RENAME_ONE_FILE_TO_ONE, RENAME_ONE_FILE_TO_TWO, RENAME_TWO_FILES_TO_ONE }; -struct rename_conflict_info { - enum rename_type rename_type; - struct diff_filepair *pair1; - struct diff_filepair *pair2; - const char *branch1; - const char *branch2; - struct stage_data *dst_entry1; - struct stage_data *dst_entry2; - struct diff_filespec ren1_other; - struct diff_filespec ren2_other; -}; - /* * Since we want to write the index eventually, we cannot reuse the index * for these (temporary) data. */ struct stage_data { - struct { - unsigned mode; - struct object_id oid; - } stages[4]; + struct diff_filespec stages[4]; /* mostly for oid & mode; maybe path */ struct rename_conflict_info *rename_conflict_info; unsigned processed:1; }; +struct rename { + unsigned processed:1; + struct diff_filepair *pair; + const char *branch; /* branch that the rename occurred on */ + /* + * If directory rename detection affected this rename, what was its + * original type ('A' or 'R') and it's original destination before + * the directory rename (otherwise, '\0' and NULL for these two vars). + */ + char dir_rename_original_type; + char *dir_rename_original_dest; + /* + * Purpose of src_entry and dst_entry: + * + * If 'before' is renamed to 'after' then src_entry will contain + * the versions of 'before' from the merge_base, HEAD, and MERGE in + * stages 1, 2, and 3; dst_entry will contain the respective + * versions of 'after' in corresponding locations. Thus, we have a + * total of six modes and oids, though some will be null. (Stage 0 + * is ignored; we're interested in handling conflicts.) + * + * Since we don't turn on break-rewrites by default, neither + * src_entry nor dst_entry can have all three of their stages have + * non-null oids, meaning at most four of the six will be non-null. + * Also, since this is a rename, both src_entry and dst_entry will + * have at least one non-null oid, meaning at least two will be + * non-null. Of the six oids, a typical rename will have three be + * non-null. Only two implies a rename/delete, and four implies a + * rename/add. + */ + struct stage_data *src_entry; + struct stage_data *dst_entry; +}; + +struct rename_conflict_info { + enum rename_type rename_type; + struct rename *ren1; + struct rename *ren2; +}; + static inline void setup_rename_conflict_info(enum rename_type rename_type, - struct diff_filepair *pair1, - struct diff_filepair *pair2, - const char *branch1, - const char *branch2, - struct stage_data *dst_entry1, - struct stage_data *dst_entry2, - struct merge_options *o, - struct stage_data *src_entry1, - struct stage_data *src_entry2) + struct merge_options *opt, + struct rename *ren1, + struct rename *ren2) { struct rename_conflict_info *ci; @@ -234,136 +295,115 @@ static inline void setup_rename_conflict_info(enum rename_type rename_type, * When we have two renames involved, it's easiest to get the * correct things into stage 2 and 3, and to make sure that the * content merge puts HEAD before the other branch if we just - * ensure that branch1 == o->branch1. So, simply flip arguments + * ensure that branch1 == opt->branch1. So, simply flip arguments * around if we don't have that. */ - if (dst_entry2 && branch1 != o->branch1) { - setup_rename_conflict_info(rename_type, - pair2, pair1, - branch2, branch1, - dst_entry2, dst_entry1, - o, - src_entry2, src_entry1); + if (ren2 && ren1->branch != opt->branch1) { + setup_rename_conflict_info(rename_type, opt, ren2, ren1); return; } ci = xcalloc(1, sizeof(struct rename_conflict_info)); ci->rename_type = rename_type; - ci->pair1 = pair1; - ci->branch1 = branch1; - ci->branch2 = branch2; - - ci->dst_entry1 = dst_entry1; - dst_entry1->rename_conflict_info = ci; - dst_entry1->processed = 0; - - assert(!pair2 == !dst_entry2); - if (dst_entry2) { - ci->dst_entry2 = dst_entry2; - ci->pair2 = pair2; - dst_entry2->rename_conflict_info = ci; - } + ci->ren1 = ren1; + ci->ren2 = ren2; - if (rename_type == RENAME_TWO_FILES_TO_ONE) { - /* - * For each rename, there could have been - * modifications on the side of history where that - * file was not renamed. - */ - int ostage1 = o->branch1 == branch1 ? 3 : 2; - int ostage2 = ostage1 ^ 1; - - ci->ren1_other.path = pair1->one->path; - oidcpy(&ci->ren1_other.oid, &src_entry1->stages[ostage1].oid); - ci->ren1_other.mode = src_entry1->stages[ostage1].mode; - - ci->ren2_other.path = pair2->one->path; - oidcpy(&ci->ren2_other.oid, &src_entry2->stages[ostage2].oid); - ci->ren2_other.mode = src_entry2->stages[ostage2].mode; + ci->ren1->dst_entry->processed = 0; + ci->ren1->dst_entry->rename_conflict_info = ci; + if (ren2) { + ci->ren2->dst_entry->rename_conflict_info = ci; } } -static int show(struct merge_options *o, int v) +static int show(struct merge_options *opt, int v) { - return (!o->call_depth && o->verbosity >= v) || o->verbosity >= 5; + return (!opt->priv->call_depth && opt->verbosity >= v) || + opt->verbosity >= 5; } __attribute__((format (printf, 3, 4))) -static void output(struct merge_options *o, int v, const char *fmt, ...) +static void output(struct merge_options *opt, int v, const char *fmt, ...) { va_list ap; - if (!show(o, v)) + if (!show(opt, v)) return; - strbuf_addchars(&o->obuf, ' ', o->call_depth * 2); + strbuf_addchars(&opt->obuf, ' ', opt->priv->call_depth * 2); va_start(ap, fmt); - strbuf_vaddf(&o->obuf, fmt, ap); + strbuf_vaddf(&opt->obuf, fmt, ap); va_end(ap); - strbuf_addch(&o->obuf, '\n'); - if (!o->buffer_output) - flush_output(o); + strbuf_addch(&opt->obuf, '\n'); + if (!opt->buffer_output) + flush_output(opt); } -static void output_commit_title(struct merge_options *o, struct commit *commit) +static void output_commit_title(struct merge_options *opt, struct commit *commit) { struct merge_remote_desc *desc; - strbuf_addchars(&o->obuf, ' ', o->call_depth * 2); + strbuf_addchars(&opt->obuf, ' ', opt->priv->call_depth * 2); desc = merge_remote_util(commit); if (desc) - strbuf_addf(&o->obuf, "virtual %s\n", desc->name); + strbuf_addf(&opt->obuf, "virtual %s\n", desc->name); else { - strbuf_add_unique_abbrev(&o->obuf, &commit->object.oid, + strbuf_add_unique_abbrev(&opt->obuf, &commit->object.oid, DEFAULT_ABBREV); - strbuf_addch(&o->obuf, ' '); + strbuf_addch(&opt->obuf, ' '); if (parse_commit(commit) != 0) - strbuf_addstr(&o->obuf, _("(bad commit)\n")); + strbuf_addstr(&opt->obuf, _("(bad commit)\n")); else { const char *title; const char *msg = get_commit_buffer(commit, NULL); int len = find_commit_subject(msg, &title); if (len) - strbuf_addf(&o->obuf, "%.*s\n", len, title); + strbuf_addf(&opt->obuf, "%.*s\n", len, title); unuse_commit_buffer(commit, msg); } } - flush_output(o); + flush_output(opt); } -static int add_cacheinfo(struct merge_options *o, - unsigned int mode, const struct object_id *oid, +static int add_cacheinfo(struct merge_options *opt, + const struct diff_filespec *blob, const char *path, int stage, int refresh, int options) { + struct index_state *istate = opt->repo->index; struct cache_entry *ce; int ret; - ce = make_cache_entry(&the_index, mode, oid ? oid : &null_oid, path, stage, 0); + ce = make_cache_entry(istate, blob->mode, &blob->oid, path, stage, 0); if (!ce) - return err(o, _("add_cacheinfo failed for path '%s'; merge aborting."), path); + return err(opt, _("add_cacheinfo failed for path '%s'; merge aborting."), path); - ret = add_cache_entry(ce, options); + ret = add_index_entry(istate, ce, options); if (refresh) { struct cache_entry *nce; - nce = refresh_cache_entry(&the_index, ce, CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING); + nce = refresh_cache_entry(istate, ce, + CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING); if (!nce) - return err(o, _("add_cacheinfo failed to refresh for path '%s'; merge aborting."), path); + return err(opt, _("add_cacheinfo failed to refresh for path '%s'; merge aborting."), path); if (nce != ce) - ret = add_cache_entry(nce, options); + ret = add_index_entry(istate, nce, options); } return ret; } +static inline int merge_detect_rename(struct merge_options *opt) +{ + return (opt->detect_renames >= 0) ? opt->detect_renames : 1; +} + static void init_tree_desc_from_tree(struct tree_desc *desc, struct tree *tree) { parse_tree(tree); init_tree_desc(desc, tree->buffer, tree->size); } -static int unpack_trees_start(struct merge_options *o, +static int unpack_trees_start(struct merge_options *opt, struct tree *common, struct tree *head, struct tree *merge) @@ -372,73 +412,43 @@ static int unpack_trees_start(struct merge_options *o, struct tree_desc t[3]; struct index_state tmp_index = { NULL }; - memset(&o->unpack_opts, 0, sizeof(o->unpack_opts)); - if (o->call_depth) - o->unpack_opts.index_only = 1; + memset(&opt->priv->unpack_opts, 0, sizeof(opt->priv->unpack_opts)); + if (opt->priv->call_depth) + opt->priv->unpack_opts.index_only = 1; else - o->unpack_opts.update = 1; - o->unpack_opts.merge = 1; - o->unpack_opts.head_idx = 2; - o->unpack_opts.fn = threeway_merge; - o->unpack_opts.src_index = &the_index; - o->unpack_opts.dst_index = &tmp_index; - o->unpack_opts.aggressive = !merge_detect_rename(o); - setup_unpack_trees_porcelain(&o->unpack_opts, "merge"); + opt->priv->unpack_opts.update = 1; + opt->priv->unpack_opts.merge = 1; + opt->priv->unpack_opts.head_idx = 2; + opt->priv->unpack_opts.fn = threeway_merge; + opt->priv->unpack_opts.src_index = opt->repo->index; + opt->priv->unpack_opts.dst_index = &tmp_index; + opt->priv->unpack_opts.aggressive = !merge_detect_rename(opt); + setup_unpack_trees_porcelain(&opt->priv->unpack_opts, "merge"); init_tree_desc_from_tree(t+0, common); init_tree_desc_from_tree(t+1, head); init_tree_desc_from_tree(t+2, merge); - rc = unpack_trees(3, t, &o->unpack_opts); - cache_tree_free(&active_cache_tree); + rc = unpack_trees(3, t, &opt->priv->unpack_opts); + cache_tree_free(&opt->repo->index->cache_tree); /* - * Update the_index to match the new results, AFTER saving a copy - * in o->orig_index. Update src_index to point to the saved copy. - * (verify_uptodate() checks src_index, and the original index is - * the one that had the necessary modification timestamps.) + * Update opt->repo->index to match the new results, AFTER saving a + * copy in opt->priv->orig_index. Update src_index to point to the + * saved copy. (verify_uptodate() checks src_index, and the original + * index is the one that had the necessary modification timestamps.) */ - o->orig_index = the_index; - the_index = tmp_index; - o->unpack_opts.src_index = &o->orig_index; + opt->priv->orig_index = *opt->repo->index; + *opt->repo->index = tmp_index; + opt->priv->unpack_opts.src_index = &opt->priv->orig_index; return rc; } -static void unpack_trees_finish(struct merge_options *o) +static void unpack_trees_finish(struct merge_options *opt) { - discard_index(&o->orig_index); - clear_unpack_trees_porcelain(&o->unpack_opts); -} - -struct tree *write_tree_from_memory(struct merge_options *o) -{ - struct tree *result = NULL; - - if (unmerged_cache()) { - int i; - fprintf(stderr, "BUG: There are unmerged index entries:\n"); - for (i = 0; i < active_nr; i++) { - const struct cache_entry *ce = active_cache[i]; - if (ce_stage(ce)) - fprintf(stderr, "BUG: %d %.*s\n", ce_stage(ce), - (int)ce_namelen(ce), ce->name); - } - BUG("unmerged index entries in merge-recursive.c"); - } - - if (!active_cache_tree) - active_cache_tree = cache_tree(); - - if (!cache_tree_fully_valid(active_cache_tree) && - cache_tree_update(&the_index, 0) < 0) { - err(o, _("error building trees")); - return NULL; - } - - result = lookup_tree(the_repository, &active_cache_tree->oid); - - return result; + discard_index(&opt->priv->orig_index); + clear_unpack_trees_porcelain(&opt->priv->unpack_opts); } static int save_files_dirs(const struct object_id *oid, @@ -447,36 +457,37 @@ static int save_files_dirs(const struct object_id *oid, { struct path_hashmap_entry *entry; int baselen = base->len; - struct merge_options *o = context; + struct merge_options *opt = context; strbuf_addstr(base, path); FLEX_ALLOC_MEM(entry, path, base->buf, base->len); - hashmap_entry_init(entry, path_hash(entry->path)); - hashmap_add(&o->current_file_dir_set, entry); + hashmap_entry_init(&entry->e, path_hash(entry->path)); + hashmap_add(&opt->priv->current_file_dir_set, &entry->e); strbuf_setlen(base, baselen); return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0); } -static void get_files_dirs(struct merge_options *o, struct tree *tree) +static void get_files_dirs(struct merge_options *opt, struct tree *tree) { struct pathspec match_all; memset(&match_all, 0, sizeof(match_all)); - read_tree_recursive(tree, "", 0, 0, &match_all, save_files_dirs, o); + read_tree_recursive(opt->repo, tree, "", 0, 0, + &match_all, save_files_dirs, opt); } -static int get_tree_entry_if_blob(const struct object_id *tree, +static int get_tree_entry_if_blob(struct repository *r, + const struct object_id *tree, const char *path, - struct object_id *hashy, - unsigned int *mode_o) + struct diff_filespec *dfs) { int ret; - ret = get_tree_entry(tree, path, hashy, mode_o); - if (S_ISDIR(*mode_o)) { - oidcpy(hashy, &null_oid); - *mode_o = 0; + ret = get_tree_entry(r, tree, path, &dfs->oid, &dfs->mode); + if (S_ISDIR(dfs->mode)) { + oidcpy(&dfs->oid, &null_oid); + dfs->mode = 0; } return ret; } @@ -485,18 +496,16 @@ static int get_tree_entry_if_blob(const struct object_id *tree, * Returns an index_entry instance which doesn't have to correspond to * a real cache entry in Git's index. */ -static struct stage_data *insert_stage_data(const char *path, +static struct stage_data *insert_stage_data(struct repository *r, + const char *path, struct tree *o, struct tree *a, struct tree *b, struct string_list *entries) { struct string_list_item *item; struct stage_data *e = xcalloc(1, sizeof(struct stage_data)); - get_tree_entry_if_blob(&o->object.oid, path, - &e->stages[1].oid, &e->stages[1].mode); - get_tree_entry_if_blob(&a->object.oid, path, - &e->stages[2].oid, &e->stages[2].mode); - get_tree_entry_if_blob(&b->object.oid, path, - &e->stages[3].oid, &e->stages[3].mode); + get_tree_entry_if_blob(r, &o->object.oid, path, &e->stages[1]); + get_tree_entry_if_blob(r, &a->object.oid, path, &e->stages[2]); + get_tree_entry_if_blob(r, &b->object.oid, path, &e->stages[3]); item = string_list_insert(entries, path); item->util = e; return e; @@ -506,17 +515,17 @@ static struct stage_data *insert_stage_data(const char *path, * Create a dictionary mapping file names to stage_data objects. The * dictionary contains one entry for every path with a non-zero stage entry. */ -static struct string_list *get_unmerged(void) +static struct string_list *get_unmerged(struct index_state *istate) { struct string_list *unmerged = xcalloc(1, sizeof(struct string_list)); int i; unmerged->strdup_strings = 1; - for (i = 0; i < active_nr; i++) { + for (i = 0; i < istate->cache_nr; i++) { struct string_list_item *item; struct stage_data *e; - const struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = istate->cache[i]; if (!ce_stage(ce)) continue; @@ -560,7 +569,7 @@ static int string_list_df_name_compare(const char *one, const char *two) return onelen - twolen; } -static void record_df_conflict_files(struct merge_options *o, +static void record_df_conflict_files(struct merge_options *opt, struct string_list *entries) { /* If there is a D/F conflict and the file for such a conflict @@ -585,7 +594,7 @@ static void record_df_conflict_files(struct merge_options *o, * If we're merging merge-bases, we don't want to bother with * any working directory changes. */ - if (o->call_depth) + if (opt->priv->call_depth) return; /* Ensure D/F conflicts are adjacent in the entries list. */ @@ -597,7 +606,7 @@ static void record_df_conflict_files(struct merge_options *o, df_sorted_entries.cmp = string_list_df_name_compare; string_list_sort(&df_sorted_entries); - string_list_clear(&o->df_conflict_file_set, 1); + string_list_clear(&opt->priv->df_conflict_file_set, 1); for (i = 0; i < df_sorted_entries.nr; i++) { const char *path = df_sorted_entries.items[i].string; int len = strlen(path); @@ -613,7 +622,7 @@ static void record_df_conflict_files(struct merge_options *o, len > last_len && memcmp(path, last_file, last_len) == 0 && path[last_len] == '/') { - string_list_insert(&o->df_conflict_file_set, last_file); + string_list_insert(&opt->priv->df_conflict_file_set, last_file); } /* @@ -632,33 +641,6 @@ static void record_df_conflict_files(struct merge_options *o, string_list_clear(&df_sorted_entries, 0); } -struct rename { - struct diff_filepair *pair; - /* - * Purpose of src_entry and dst_entry: - * - * If 'before' is renamed to 'after' then src_entry will contain - * the versions of 'before' from the merge_base, HEAD, and MERGE in - * stages 1, 2, and 3; dst_entry will contain the respective - * versions of 'after' in corresponding locations. Thus, we have a - * total of six modes and oids, though some will be null. (Stage 0 - * is ignored; we're interested in handling conflicts.) - * - * Since we don't turn on break-rewrites by default, neither - * src_entry nor dst_entry can have all three of their stages have - * non-null oids, meaning at most four of the six will be non-null. - * Also, since this is a rename, both src_entry and dst_entry will - * have at least one non-null oid, meaning at least two will be - * non-null. Of the six oids, a typical rename will have three be - * non-null. Only two implies a rename/delete, and four implies a - * rename/add. - */ - struct stage_data *src_entry; - struct stage_data *dst_entry; - unsigned add_turned_into_rename:1; - unsigned processed:1; -}; - static int update_stages(struct merge_options *opt, const char *path, const struct diff_filespec *o, const struct diff_filespec *a, @@ -676,41 +658,20 @@ static int update_stages(struct merge_options *opt, const char *path, int clear = 1; int options = ADD_CACHE_OK_TO_ADD | ADD_CACHE_SKIP_DFCHECK; if (clear) - if (remove_file_from_cache(path)) + if (remove_file_from_index(opt->repo->index, path)) return -1; if (o) - if (add_cacheinfo(opt, o->mode, &o->oid, path, 1, 0, options)) + if (add_cacheinfo(opt, o, path, 1, 0, options)) return -1; if (a) - if (add_cacheinfo(opt, a->mode, &a->oid, path, 2, 0, options)) + if (add_cacheinfo(opt, a, path, 2, 0, options)) return -1; if (b) - if (add_cacheinfo(opt, b->mode, &b->oid, path, 3, 0, options)) + if (add_cacheinfo(opt, b, path, 3, 0, options)) return -1; return 0; } -static int update_stages_for_stage_data(struct merge_options *opt, - const char *path, - const struct stage_data *stage_data) -{ - struct diff_filespec o, a, b; - - o.mode = stage_data->stages[1].mode; - oidcpy(&o.oid, &stage_data->stages[1].oid); - - a.mode = stage_data->stages[2].mode; - oidcpy(&a.oid, &stage_data->stages[2].oid); - - b.mode = stage_data->stages[3].mode; - oidcpy(&b.oid, &stage_data->stages[3].oid); - - return update_stages(opt, path, - is_null_oid(&o.oid) ? NULL : &o, - is_null_oid(&a.oid) ? NULL : &a, - is_null_oid(&b.oid) ? NULL : &b); -} - static void update_entry(struct stage_data *entry, struct diff_filespec *o, struct diff_filespec *a, @@ -725,20 +686,21 @@ static void update_entry(struct stage_data *entry, oidcpy(&entry->stages[3].oid, &b->oid); } -static int remove_file(struct merge_options *o, int clean, +static int remove_file(struct merge_options *opt, int clean, const char *path, int no_wd) { - int update_cache = o->call_depth || clean; - int update_working_directory = !o->call_depth && !no_wd; + int update_cache = opt->priv->call_depth || clean; + int update_working_directory = !opt->priv->call_depth && !no_wd; if (update_cache) { - if (remove_file_from_cache(path)) + if (remove_file_from_index(opt->repo->index, path)) return -1; } if (update_working_directory) { if (ignore_case) { struct cache_entry *ce; - ce = cache_file_exists(path, strlen(path), ignore_case); + ce = index_file_exists(opt->repo->index, path, strlen(path), + ignore_case); if (ce && ce_stage(ce) == 0 && strcmp(path, ce->name)) return 0; } @@ -758,7 +720,9 @@ static void add_flattened_path(struct strbuf *out, const char *s) out->buf[i] = '_'; } -static char *unique_path(struct merge_options *o, const char *path, const char *branch) +static char *unique_path(struct merge_options *opt, + const char *path, + const char *branch) { struct path_hashmap_entry *entry; struct strbuf newpath = STRBUF_INIT; @@ -769,16 +733,16 @@ static char *unique_path(struct merge_options *o, const char *path, const char * add_flattened_path(&newpath, branch); base_len = newpath.len; - while (hashmap_get_from_hash(&o->current_file_dir_set, + while (hashmap_get_from_hash(&opt->priv->current_file_dir_set, path_hash(newpath.buf), newpath.buf) || - (!o->call_depth && file_exists(newpath.buf))) { + (!opt->priv->call_depth && file_exists(newpath.buf))) { strbuf_setlen(&newpath, base_len); strbuf_addf(&newpath, "_%d", suffix++); } FLEX_ALLOC_MEM(entry, path, newpath.buf, newpath.len); - hashmap_entry_init(entry, path_hash(entry->path)); - hashmap_add(&o->current_file_dir_set, entry); + hashmap_entry_init(&entry->e, path_hash(entry->path)); + hashmap_add(&opt->priv->current_file_dir_set, &entry->e); return strbuf_detach(&newpath, NULL); } @@ -788,7 +752,8 @@ static char *unique_path(struct merge_options *o, const char *path, const char * * check the working directory. If empty_ok is non-zero, also return * 0 in the case where the working-tree dir exists but is empty. */ -static int dir_in_way(const char *path, int check_working_copy, int empty_ok) +static int dir_in_way(struct index_state *istate, const char *path, + int check_working_copy, int empty_ok) { int pos; struct strbuf dirpath = STRBUF_INIT; @@ -797,29 +762,30 @@ static int dir_in_way(const char *path, int check_working_copy, int empty_ok) strbuf_addstr(&dirpath, path); strbuf_addch(&dirpath, '/'); - pos = cache_name_pos(dirpath.buf, dirpath.len); + pos = index_name_pos(istate, dirpath.buf, dirpath.len); if (pos < 0) pos = -1 - pos; - if (pos < active_nr && - !strncmp(dirpath.buf, active_cache[pos]->name, dirpath.len)) { + if (pos < istate->cache_nr && + !strncmp(dirpath.buf, istate->cache[pos]->name, dirpath.len)) { strbuf_release(&dirpath); return 1; } strbuf_release(&dirpath); return check_working_copy && !lstat(path, &st) && S_ISDIR(st.st_mode) && - !(empty_ok && is_empty_dir(path)); + !(empty_ok && is_empty_dir(path)) && + !has_symlink_leading_path(path, strlen(path)); } /* * Returns whether path was tracked in the index before the merge started, * and its oid and mode match the specified values */ -static int was_tracked_and_matches(struct merge_options *o, const char *path, - const struct object_id *oid, unsigned mode) +static int was_tracked_and_matches(struct merge_options *opt, const char *path, + const struct diff_filespec *blob) { - int pos = index_name_pos(&o->orig_index, path, strlen(path)); + int pos = index_name_pos(&opt->priv->orig_index, path, strlen(path)); struct cache_entry *ce; if (0 > pos) @@ -827,16 +793,16 @@ static int was_tracked_and_matches(struct merge_options *o, const char *path, return 0; /* See if the file we were tracking before matches */ - ce = o->orig_index.cache[pos]; - return (oid_eq(&ce->oid, oid) && ce->ce_mode == mode); + ce = opt->priv->orig_index.cache[pos]; + return (oideq(&ce->oid, &blob->oid) && ce->ce_mode == blob->mode); } /* * Returns whether path was tracked in the index before the merge started */ -static int was_tracked(struct merge_options *o, const char *path) +static int was_tracked(struct merge_options *opt, const char *path) { - int pos = index_name_pos(&o->orig_index, path, strlen(path)); + int pos = index_name_pos(&opt->priv->orig_index, path, strlen(path)); if (0 <= pos) /* we were tracking this path before the merge */ @@ -845,11 +811,13 @@ static int was_tracked(struct merge_options *o, const char *path) return 0; } -static int would_lose_untracked(const char *path) +static int would_lose_untracked(struct merge_options *opt, const char *path) { + struct index_state *istate = opt->repo->index; + /* * This may look like it can be simplified to: - * return !was_tracked(o, path) && file_exists(path) + * return !was_tracked(opt, path) && file_exists(path) * but it can't. This function needs to know whether path was in * the working tree due to EITHER having been tracked in the index * before the merge OR having been put into the working copy and @@ -864,19 +832,19 @@ static int would_lose_untracked(const char *path) * update_file()/would_lose_untracked(); see every comment in this * file which mentions "update_stages". */ - int pos = cache_name_pos(path, strlen(path)); + int pos = index_name_pos(istate, path, strlen(path)); if (pos < 0) pos = -1 - pos; - while (pos < active_nr && - !strcmp(path, active_cache[pos]->name)) { + while (pos < istate->cache_nr && + !strcmp(path, istate->cache[pos]->name)) { /* * If stage #0, it is definitely tracked. * If it has stage #2 then it was tracked * before this merge started. All other * cases the path was not tracked. */ - switch (ce_stage(active_cache[pos])) { + switch (ce_stage(istate->cache[pos])) { case 0: case 2: return 0; @@ -886,38 +854,38 @@ static int would_lose_untracked(const char *path) return file_exists(path); } -static int was_dirty(struct merge_options *o, const char *path) +static int was_dirty(struct merge_options *opt, const char *path) { struct cache_entry *ce; int dirty = 1; - if (o->call_depth || !was_tracked(o, path)) + if (opt->priv->call_depth || !was_tracked(opt, path)) return !dirty; - ce = index_file_exists(o->unpack_opts.src_index, + ce = index_file_exists(opt->priv->unpack_opts.src_index, path, strlen(path), ignore_case); - dirty = verify_uptodate(ce, &o->unpack_opts) != 0; + dirty = verify_uptodate(ce, &opt->priv->unpack_opts) != 0; return dirty; } -static int make_room_for_path(struct merge_options *o, const char *path) +static int make_room_for_path(struct merge_options *opt, const char *path) { int status, i; const char *msg = _("failed to create path '%s'%s"); /* Unlink any D/F conflict files that are in the way */ - for (i = 0; i < o->df_conflict_file_set.nr; i++) { - const char *df_path = o->df_conflict_file_set.items[i].string; + for (i = 0; i < opt->priv->df_conflict_file_set.nr; i++) { + const char *df_path = opt->priv->df_conflict_file_set.items[i].string; size_t pathlen = strlen(path); size_t df_pathlen = strlen(df_path); if (df_pathlen < pathlen && path[df_pathlen] == '/' && strncmp(path, df_path, df_pathlen) == 0) { - output(o, 3, + output(opt, 3, _("Removing %s to make room for subdirectory\n"), df_path); unlink(df_path); - unsorted_string_list_delete_item(&o->df_conflict_file_set, + unsorted_string_list_delete_item(&opt->priv->df_conflict_file_set, i, 0); break; } @@ -928,16 +896,16 @@ static int make_room_for_path(struct merge_options *o, const char *path) if (status) { if (status == SCLD_EXISTS) /* something else exists */ - return err(o, msg, path, _(": perhaps a D/F conflict?")); - return err(o, msg, path, ""); + return err(opt, msg, path, _(": perhaps a D/F conflict?")); + return err(opt, msg, path, ""); } /* * Do not unlink a file in the work tree if we are not * tracking it. */ - if (would_lose_untracked(path)) - return err(o, _("refusing to lose untracked file at '%s'"), + if (would_lose_untracked(opt, path)) + return err(opt, _("refusing to lose untracked file at '%s'"), path); /* Successful unlink is good.. */ @@ -947,19 +915,18 @@ static int make_room_for_path(struct merge_options *o, const char *path) if (errno == ENOENT) return 0; /* .. but not some other error (who really cares what?) */ - return err(o, msg, path, _(": perhaps a D/F conflict?")); + return err(opt, msg, path, _(": perhaps a D/F conflict?")); } -static int update_file_flags(struct merge_options *o, - const struct object_id *oid, - unsigned mode, +static int update_file_flags(struct merge_options *opt, + const struct diff_filespec *contents, const char *path, int update_cache, int update_wd) { int ret = 0; - if (o->call_depth) + if (opt->priv->call_depth) update_wd = 0; if (update_wd) { @@ -967,7 +934,7 @@ static int update_file_flags(struct merge_options *o, void *buf; unsigned long size; - if (S_ISGITLINK(mode)) { + if (S_ISGITLINK(contents->mode)) { /* * We may later decide to recursively descend into * the submodule directory and update its index @@ -977,106 +944,111 @@ static int update_file_flags(struct merge_options *o, goto update_index; } - buf = read_object_file(oid, &type, &size); - if (!buf) - return err(o, _("cannot read object %s '%s'"), oid_to_hex(oid), path); + buf = read_object_file(&contents->oid, &type, &size); + if (!buf) { + ret = err(opt, _("cannot read object %s '%s'"), + oid_to_hex(&contents->oid), path); + goto free_buf; + } if (type != OBJ_BLOB) { - ret = err(o, _("blob expected for %s '%s'"), oid_to_hex(oid), path); + ret = err(opt, _("blob expected for %s '%s'"), + oid_to_hex(&contents->oid), path); goto free_buf; } - if (S_ISREG(mode)) { + if (S_ISREG(contents->mode)) { struct strbuf strbuf = STRBUF_INIT; - if (convert_to_working_tree(&the_index, path, buf, size, &strbuf)) { + if (convert_to_working_tree(opt->repo->index, + path, buf, size, &strbuf)) { free(buf); size = strbuf.len; buf = strbuf_detach(&strbuf, NULL); } } - if (make_room_for_path(o, path) < 0) { + if (make_room_for_path(opt, path) < 0) { update_wd = 0; goto free_buf; } - if (S_ISREG(mode) || (!has_symlinks && S_ISLNK(mode))) { + if (S_ISREG(contents->mode) || + (!has_symlinks && S_ISLNK(contents->mode))) { int fd; - if (mode & 0100) - mode = 0777; - else - mode = 0666; + int mode = (contents->mode & 0100 ? 0777 : 0666); + fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); if (fd < 0) { - ret = err(o, _("failed to open '%s': %s"), + ret = err(opt, _("failed to open '%s': %s"), path, strerror(errno)); goto free_buf; } write_in_full(fd, buf, size); close(fd); - } else if (S_ISLNK(mode)) { + } else if (S_ISLNK(contents->mode)) { char *lnk = xmemdupz(buf, size); safe_create_leading_directories_const(path); unlink(path); if (symlink(lnk, path)) - ret = err(o, _("failed to symlink '%s': %s"), + ret = err(opt, _("failed to symlink '%s': %s"), path, strerror(errno)); free(lnk); } else - ret = err(o, + ret = err(opt, _("do not know what to do with %06o %s '%s'"), - mode, oid_to_hex(oid), path); + contents->mode, oid_to_hex(&contents->oid), path); free_buf: free(buf); } update_index: if (!ret && update_cache) - if (add_cacheinfo(o, mode, oid, path, 0, update_wd, + if (add_cacheinfo(opt, contents, path, 0, update_wd, ADD_CACHE_OK_TO_ADD)) return -1; return ret; } -static int update_file(struct merge_options *o, +static int update_file(struct merge_options *opt, int clean, - const struct object_id *oid, - unsigned mode, + const struct diff_filespec *contents, const char *path) { - return update_file_flags(o, oid, mode, path, o->call_depth || clean, !o->call_depth); + return update_file_flags(opt, contents, path, + opt->priv->call_depth || clean, !opt->priv->call_depth); } /* Low level file merging, update and removal */ struct merge_file_info { - struct object_id oid; - unsigned mode; + struct diff_filespec blob; /* mostly use oid & mode; sometimes path */ unsigned clean:1, merge:1; }; -static int merge_3way(struct merge_options *o, +static int merge_3way(struct merge_options *opt, mmbuffer_t *result_buf, - const struct diff_filespec *one, + const struct diff_filespec *o, const struct diff_filespec *a, const struct diff_filespec *b, const char *branch1, - const char *branch2) + const char *branch2, + const int extra_marker_size) { mmfile_t orig, src1, src2; struct ll_merge_options ll_opts = {0}; - char *base_name, *name1, *name2; + char *base, *name1, *name2; int merge_status; - ll_opts.renormalize = o->renormalize; - ll_opts.xdl_opts = o->xdl_opts; + ll_opts.renormalize = opt->renormalize; + ll_opts.extra_marker_size = extra_marker_size; + ll_opts.xdl_opts = opt->xdl_opts; - if (o->call_depth) { + if (opt->priv->call_depth) { ll_opts.virtual_ancestor = 1; ll_opts.variant = 0; } else { - switch (o->recursive_variant) { - case MERGE_RECURSIVE_OURS: + switch (opt->recursive_variant) { + case MERGE_VARIANT_OURS: ll_opts.variant = XDL_MERGE_FAVOR_OURS; break; - case MERGE_RECURSIVE_THEIRS: + case MERGE_VARIANT_THEIRS: ll_opts.variant = XDL_MERGE_FAVOR_THEIRS; break; default: @@ -1085,28 +1057,26 @@ static int merge_3way(struct merge_options *o, } } - if (strcmp(a->path, b->path) || - (o->ancestor != NULL && strcmp(a->path, one->path) != 0)) { - base_name = o->ancestor == NULL ? NULL : - mkpathdup("%s:%s", o->ancestor, one->path); + assert(a->path && b->path && o->path && opt->ancestor); + if (strcmp(a->path, b->path) || strcmp(a->path, o->path) != 0) { + base = mkpathdup("%s:%s", opt->ancestor, o->path); name1 = mkpathdup("%s:%s", branch1, a->path); name2 = mkpathdup("%s:%s", branch2, b->path); } else { - base_name = o->ancestor == NULL ? NULL : - mkpathdup("%s", o->ancestor); + base = mkpathdup("%s", opt->ancestor); name1 = mkpathdup("%s", branch1); name2 = mkpathdup("%s", branch2); } - read_mmblob(&orig, &one->oid); + read_mmblob(&orig, &o->oid); read_mmblob(&src1, &a->oid); read_mmblob(&src2, &b->oid); - merge_status = ll_merge(result_buf, a->path, &orig, base_name, + merge_status = ll_merge(result_buf, a->path, &orig, base, &src1, name1, &src2, name2, - &the_index, &ll_opts); + opt->repo->index, &ll_opts); - free(base_name); + free(base); free(name1); free(name2); free(orig.ptr); @@ -1115,7 +1085,8 @@ static int merge_3way(struct merge_options *o, return merge_status; } -static int find_first_merges(struct object_array *result, const char *path, +static int find_first_merges(struct repository *repo, + struct object_array *result, const char *path, struct commit *a, struct commit *b) { int i, j; @@ -1123,7 +1094,7 @@ static int find_first_merges(struct object_array *result, const char *path, struct commit *commit; int contains_another; - char merged_revision[42]; + char merged_revision[GIT_MAX_HEXSZ + 2]; const char *rev_args[] = { "rev-list", "--merges", "--ancestry-path", "--all", merged_revision, NULL }; struct rev_info revs; @@ -1135,7 +1106,7 @@ static int find_first_merges(struct object_array *result, const char *path, /* get all revisions that merge commit a */ xsnprintf(merged_revision, sizeof(merged_revision), "^%s", oid_to_hex(&a->object.oid)); - repo_init_revisions(the_repository, &revs, NULL); + repo_init_revisions(repo, &revs, NULL); rev_opts.submodule = path; /* FIXME: can't handle linked worktrees in submodules yet */ revs.single_worktree = path != NULL; @@ -1185,7 +1156,12 @@ static void print_commit(struct commit *commit) strbuf_release(&sb); } -static int merge_submodule(struct merge_options *o, +static int is_valid(const struct diff_filespec *dfs) +{ + return dfs->mode != 0 && !is_null_oid(&dfs->oid); +} + +static int merge_submodule(struct merge_options *opt, struct object_id *result, const char *path, const struct object_id *base, const struct object_id *a, const struct object_id *b) @@ -1195,7 +1171,7 @@ static int merge_submodule(struct merge_options *o, struct object_array merges; int i; - int search = !o->call_depth; + int search = !opt->priv->call_depth; /* store a in result in case we fail */ oidcpy(result, a); @@ -1209,32 +1185,32 @@ static int merge_submodule(struct merge_options *o, return 0; if (add_submodule_odb(path)) { - output(o, 1, _("Failed to merge submodule %s (not checked out)"), path); + output(opt, 1, _("Failed to merge submodule %s (not checked out)"), path); return 0; } - if (!(commit_base = lookup_commit_reference(the_repository, base)) || - !(commit_a = lookup_commit_reference(the_repository, a)) || - !(commit_b = lookup_commit_reference(the_repository, b))) { - output(o, 1, _("Failed to merge submodule %s (commits not present)"), path); + if (!(commit_base = lookup_commit_reference(opt->repo, base)) || + !(commit_a = lookup_commit_reference(opt->repo, a)) || + !(commit_b = lookup_commit_reference(opt->repo, b))) { + output(opt, 1, _("Failed to merge submodule %s (commits not present)"), path); return 0; } /* check whether both changes are forward */ if (!in_merge_bases(commit_base, commit_a) || !in_merge_bases(commit_base, commit_b)) { - output(o, 1, _("Failed to merge submodule %s (commits don't follow merge-base)"), path); + output(opt, 1, _("Failed to merge submodule %s (commits don't follow merge-base)"), path); return 0; } /* Case #1: a is contained in b or vice versa */ if (in_merge_bases(commit_a, commit_b)) { oidcpy(result, b); - if (show(o, 3)) { - output(o, 3, _("Fast-forwarding submodule %s to the following commit:"), path); - output_commit_title(o, commit_b); - } else if (show(o, 2)) - output(o, 2, _("Fast-forwarding submodule %s"), path); + if (show(opt, 3)) { + output(opt, 3, _("Fast-forwarding submodule %s to the following commit:"), path); + output_commit_title(opt, commit_b); + } else if (show(opt, 2)) + output(opt, 2, _("Fast-forwarding submodule %s"), path); else ; /* no output */ @@ -1242,11 +1218,11 @@ static int merge_submodule(struct merge_options *o, } if (in_merge_bases(commit_b, commit_a)) { oidcpy(result, a); - if (show(o, 3)) { - output(o, 3, _("Fast-forwarding submodule %s to the following commit:"), path); - output_commit_title(o, commit_a); - } else if (show(o, 2)) - output(o, 2, _("Fast-forwarding submodule %s"), path); + if (show(opt, 3)) { + output(opt, 3, _("Fast-forwarding submodule %s to the following commit:"), path); + output_commit_title(opt, commit_a); + } else if (show(opt, 2)) + output(opt, 2, _("Fast-forwarding submodule %s"), path); else ; /* no output */ @@ -1265,17 +1241,18 @@ static int merge_submodule(struct merge_options *o, return 0; /* find commit which merges them */ - parent_count = find_first_merges(&merges, path, commit_a, commit_b); + parent_count = find_first_merges(opt->repo, &merges, path, + commit_a, commit_b); switch (parent_count) { case 0: - output(o, 1, _("Failed to merge submodule %s (merge following commits not found)"), path); + output(opt, 1, _("Failed to merge submodule %s (merge following commits not found)"), path); break; case 1: - output(o, 1, _("Failed to merge submodule %s (not fast-forward)"), path); - output(o, 2, _("Found a possible merge resolution for the submodule:\n")); + output(opt, 1, _("Failed to merge submodule %s (not fast-forward)"), path); + output(opt, 2, _("Found a possible merge resolution for the submodule:\n")); print_commit((struct commit *) merges.objects[0].item); - output(o, 2, _( + output(opt, 2, _( "If this is correct simply add it to the index " "for example\n" "by using:\n\n" @@ -1285,7 +1262,7 @@ static int merge_submodule(struct merge_options *o, break; default: - output(o, 1, _("Failed to merge submodule %s (multiple merges found)"), path); + output(opt, 1, _("Failed to merge submodule %s (multiple merges found)"), path); for (i = 0; i < merges.nr; i++) print_commit((struct commit *) merges.objects[i].item); } @@ -1294,24 +1271,26 @@ static int merge_submodule(struct merge_options *o, return 0; } -static int merge_mode_and_contents(struct merge_options *o, - const struct diff_filespec *one, +static int merge_mode_and_contents(struct merge_options *opt, + const struct diff_filespec *o, const struct diff_filespec *a, const struct diff_filespec *b, const char *filename, const char *branch1, const char *branch2, + const int extra_marker_size, struct merge_file_info *result) { - if (o->branch1 != branch1) { + if (opt->branch1 != branch1) { /* * It's weird getting a reverse merge with HEAD on the bottom * side of the conflict markers and the other branch on the * top. Fix that. */ - return merge_mode_and_contents(o, one, b, a, + return merge_mode_and_contents(opt, o, b, a, filename, - branch2, branch1, result); + branch2, branch1, + extra_marker_size, result); } result->merge = 0; @@ -1320,47 +1299,48 @@ static int merge_mode_and_contents(struct merge_options *o, if ((S_IFMT & a->mode) != (S_IFMT & b->mode)) { result->clean = 0; if (S_ISREG(a->mode)) { - result->mode = a->mode; - oidcpy(&result->oid, &a->oid); + result->blob.mode = a->mode; + oidcpy(&result->blob.oid, &a->oid); } else { - result->mode = b->mode; - oidcpy(&result->oid, &b->oid); + result->blob.mode = b->mode; + oidcpy(&result->blob.oid, &b->oid); } } else { - if (!oid_eq(&a->oid, &one->oid) && !oid_eq(&b->oid, &one->oid)) + if (!oideq(&a->oid, &o->oid) && !oideq(&b->oid, &o->oid)) result->merge = 1; /* * Merge modes */ - if (a->mode == b->mode || a->mode == one->mode) - result->mode = b->mode; + if (a->mode == b->mode || a->mode == o->mode) + result->blob.mode = b->mode; else { - result->mode = a->mode; - if (b->mode != one->mode) { + result->blob.mode = a->mode; + if (b->mode != o->mode) { result->clean = 0; result->merge = 1; } } - if (oid_eq(&a->oid, &b->oid) || oid_eq(&a->oid, &one->oid)) - oidcpy(&result->oid, &b->oid); - else if (oid_eq(&b->oid, &one->oid)) - oidcpy(&result->oid, &a->oid); + if (oideq(&a->oid, &b->oid) || oideq(&a->oid, &o->oid)) + oidcpy(&result->blob.oid, &b->oid); + else if (oideq(&b->oid, &o->oid)) + oidcpy(&result->blob.oid, &a->oid); else if (S_ISREG(a->mode)) { mmbuffer_t result_buf; int ret = 0, merge_status; - merge_status = merge_3way(o, &result_buf, one, a, b, - branch1, branch2); + merge_status = merge_3way(opt, &result_buf, o, a, b, + branch1, branch2, + extra_marker_size); if ((merge_status < 0) || !result_buf.ptr) - ret = err(o, _("Failed to execute internal merge")); + ret = err(opt, _("Failed to execute internal merge")); if (!ret && write_object_file(result_buf.ptr, result_buf.size, - blob_type, &result->oid)) - ret = err(o, _("Unable to add %s to database"), + blob_type, &result->blob.oid)) + ret = err(opt, _("Unable to add %s to database"), a->path); free(result_buf.ptr); @@ -1368,23 +1348,23 @@ static int merge_mode_and_contents(struct merge_options *o, return ret; result->clean = (merge_status == 0); } else if (S_ISGITLINK(a->mode)) { - result->clean = merge_submodule(o, &result->oid, - one->path, - &one->oid, + result->clean = merge_submodule(opt, &result->blob.oid, + o->path, + &o->oid, &a->oid, &b->oid); } else if (S_ISLNK(a->mode)) { - switch (o->recursive_variant) { - case MERGE_RECURSIVE_NORMAL: - oidcpy(&result->oid, &a->oid); - if (!oid_eq(&a->oid, &b->oid)) + switch (opt->recursive_variant) { + case MERGE_VARIANT_NORMAL: + oidcpy(&result->blob.oid, &a->oid); + if (!oideq(&a->oid, &b->oid)) result->clean = 0; break; - case MERGE_RECURSIVE_OURS: - oidcpy(&result->oid, &a->oid); + case MERGE_VARIANT_OURS: + oidcpy(&result->blob.oid, &a->oid); break; - case MERGE_RECURSIVE_THEIRS: - oidcpy(&result->oid, &b->oid); + case MERGE_VARIANT_THEIRS: + oidcpy(&result->blob.oid, &b->oid); break; } } else @@ -1392,15 +1372,13 @@ static int merge_mode_and_contents(struct merge_options *o, } if (result->merge) - output(o, 2, _("Auto-merging %s"), filename); + output(opt, 2, _("Auto-merging %s"), filename); return 0; } -static int handle_rename_via_dir(struct merge_options *o, - struct diff_filepair *pair, - const char *rename_branch, - const char *other_branch) +static int handle_rename_via_dir(struct merge_options *opt, + struct rename_conflict_info *ci) { /* * Handle file adds that need to be renamed due to directory rename @@ -1408,38 +1386,48 @@ static int handle_rename_via_dir(struct merge_options *o, * there is no content merge to do; just move the file into the * desired final location. */ - const struct diff_filespec *dest = pair->two; - - if (!o->call_depth && would_lose_untracked(dest->path)) { - char *alt_path = unique_path(o, dest->path, rename_branch); - - output(o, 1, _("Error: Refusing to lose untracked file at %s; " - "writing to %s instead."), - dest->path, alt_path); + const struct rename *ren = ci->ren1; + const struct diff_filespec *dest = ren->pair->two; + char *file_path = dest->path; + int mark_conflicted = (opt->detect_directory_renames == + MERGE_DIRECTORY_RENAMES_CONFLICT); + assert(ren->dir_rename_original_dest); + + if (!opt->priv->call_depth && would_lose_untracked(opt, dest->path)) { + mark_conflicted = 1; + file_path = unique_path(opt, dest->path, ren->branch); + output(opt, 1, _("Error: Refusing to lose untracked file at %s; " + "writing to %s instead."), + dest->path, file_path); + } + + if (mark_conflicted) { /* - * Write the file in worktree at alt_path, but not in the - * index. Instead, write to dest->path for the index but - * only at the higher appropriate stage. + * Write the file in worktree at file_path. In the index, + * only record the file at dest->path in the appropriate + * higher stage. */ - if (update_file(o, 0, &dest->oid, dest->mode, alt_path)) + if (update_file(opt, 0, dest, file_path)) + return -1; + if (file_path != dest->path) + free(file_path); + if (update_stages(opt, dest->path, NULL, + ren->branch == opt->branch1 ? dest : NULL, + ren->branch == opt->branch1 ? NULL : dest)) + return -1; + return 0; /* not clean, but conflicted */ + } else { + /* Update dest->path both in index and in worktree */ + if (update_file(opt, 1, dest, dest->path)) return -1; - free(alt_path); - return update_stages(o, dest->path, NULL, - rename_branch == o->branch1 ? dest : NULL, - rename_branch == o->branch1 ? NULL : dest); + return 1; /* clean */ } - - /* Update dest->path both in index and in worktree */ - if (update_file(o, 1, &dest->oid, dest->mode, dest->path)) - return -1; - return 0; } -static int handle_change_delete(struct merge_options *o, +static int handle_change_delete(struct merge_options *opt, const char *path, const char *old_path, - const struct object_id *o_oid, int o_mode, - const struct object_id *changed_oid, - int changed_mode, + const struct diff_filespec *o, + const struct diff_filespec *changed, const char *change_branch, const char *delete_branch, const char *change, const char *change_past) @@ -1448,20 +1436,20 @@ static int handle_change_delete(struct merge_options *o, const char *update_path = path; int ret = 0; - if (dir_in_way(path, !o->call_depth, 0) || - (!o->call_depth && would_lose_untracked(path))) { - update_path = alt_path = unique_path(o, path, change_branch); + if (dir_in_way(opt->repo->index, path, !opt->priv->call_depth, 0) || + (!opt->priv->call_depth && would_lose_untracked(opt, path))) { + update_path = alt_path = unique_path(opt, path, change_branch); } - if (o->call_depth) { + if (opt->priv->call_depth) { /* * We cannot arbitrarily accept either a_sha or b_sha as * correct; since there is no true "middle point" between * them, simply reuse the base version for virtual merge base. */ - ret = remove_file_from_cache(path); + ret = remove_file_from_index(opt->repo->index, path); if (!ret) - ret = update_file(o, 0, o_oid, o_mode, update_path); + ret = update_file(opt, 0, o, update_path); } else { /* * Despite the four nearly duplicate messages and argument @@ -1480,24 +1468,24 @@ static int handle_change_delete(struct merge_options *o, */ if (!alt_path) { if (!old_path) { - output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " + output(opt, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s in %s. Version %s of %s left in tree."), change, path, delete_branch, change_past, change_branch, change_branch, path); } else { - output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " + output(opt, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s to %s in %s. Version %s of %s left in tree."), change, old_path, delete_branch, change_past, path, change_branch, change_branch, path); } } else { if (!old_path) { - output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " + output(opt, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s in %s. Version %s of %s left in tree at %s."), change, path, delete_branch, change_past, change_branch, change_branch, path, alt_path); } else { - output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s " + output(opt, 1, _("CONFLICT (%s/delete): %s deleted in %s " "and %s to %s in %s. Version %s of %s left in tree at %s."), change, old_path, delete_branch, change_past, path, change_branch, change_branch, path, alt_path); @@ -1505,152 +1493,259 @@ static int handle_change_delete(struct merge_options *o, } /* * No need to call update_file() on path when change_branch == - * o->branch1 && !alt_path, since that would needlessly touch + * opt->branch1 && !alt_path, since that would needlessly touch * path. We could call update_file_flags() with update_cache=0 * and update_wd=0, but that's a no-op. */ - if (change_branch != o->branch1 || alt_path) - ret = update_file(o, 0, changed_oid, changed_mode, update_path); + if (change_branch != opt->branch1 || alt_path) + ret = update_file(opt, 0, changed, update_path); } free(alt_path); return ret; } -static int handle_rename_delete(struct merge_options *o, - struct diff_filepair *pair, - const char *rename_branch, - const char *delete_branch) +static int handle_rename_delete(struct merge_options *opt, + struct rename_conflict_info *ci) { - const struct diff_filespec *orig = pair->one; - const struct diff_filespec *dest = pair->two; - - if (handle_change_delete(o, - o->call_depth ? orig->path : dest->path, - o->call_depth ? NULL : orig->path, - &orig->oid, orig->mode, - &dest->oid, dest->mode, + const struct rename *ren = ci->ren1; + const struct diff_filespec *orig = ren->pair->one; + const struct diff_filespec *dest = ren->pair->two; + const char *rename_branch = ren->branch; + const char *delete_branch = (opt->branch1 == ren->branch ? + opt->branch2 : opt->branch1); + + if (handle_change_delete(opt, + opt->priv->call_depth ? orig->path : dest->path, + opt->priv->call_depth ? NULL : orig->path, + orig, dest, rename_branch, delete_branch, _("rename"), _("renamed"))) return -1; - if (o->call_depth) - return remove_file_from_cache(dest->path); + if (opt->priv->call_depth) + return remove_file_from_index(opt->repo->index, dest->path); else - return update_stages(o, dest->path, NULL, - rename_branch == o->branch1 ? dest : NULL, - rename_branch == o->branch1 ? NULL : dest); + return update_stages(opt, dest->path, NULL, + rename_branch == opt->branch1 ? dest : NULL, + rename_branch == opt->branch1 ? NULL : dest); } -static struct diff_filespec *filespec_from_entry(struct diff_filespec *target, - struct stage_data *entry, - int stage) +static int handle_file_collision(struct merge_options *opt, + const char *collide_path, + const char *prev_path1, + const char *prev_path2, + const char *branch1, const char *branch2, + struct diff_filespec *a, + struct diff_filespec *b) { - struct object_id *oid = &entry->stages[stage].oid; - unsigned mode = entry->stages[stage].mode; - if (mode == 0 || is_null_oid(oid)) - return NULL; - oidcpy(&target->oid, oid); - target->mode = mode; - return target; -} - -static int handle_file(struct merge_options *o, - struct diff_filespec *rename, - int stage, - struct rename_conflict_info *ci) -{ - char *dst_name = rename->path; - struct stage_data *dst_entry; - const char *cur_branch, *other_branch; - struct diff_filespec other; - struct diff_filespec *add; - int ret; + struct merge_file_info mfi; + struct diff_filespec null; + char *alt_path = NULL; + const char *update_path = collide_path; - if (stage == 2) { - dst_entry = ci->dst_entry1; - cur_branch = ci->branch1; - other_branch = ci->branch2; - } else { - dst_entry = ci->dst_entry2; - cur_branch = ci->branch2; - other_branch = ci->branch1; + /* + * It's easiest to get the correct things into stage 2 and 3, and + * to make sure that the content merge puts HEAD before the other + * branch if we just ensure that branch1 == opt->branch1. So, simply + * flip arguments around if we don't have that. + */ + if (branch1 != opt->branch1) { + return handle_file_collision(opt, collide_path, + prev_path2, prev_path1, + branch2, branch1, + b, a); } - add = filespec_from_entry(&other, dst_entry, stage ^ 1); - if (add) { - int ren_src_was_dirty = was_dirty(o, rename->path); - char *add_name = unique_path(o, rename->path, other_branch); - if (update_file(o, 0, &add->oid, add->mode, add_name)) - return -1; + /* + * In the recursive case, we just opt to undo renames + */ + if (opt->priv->call_depth && (prev_path1 || prev_path2)) { + /* Put first file (a->oid, a->mode) in its original spot */ + if (prev_path1) { + if (update_file(opt, 1, a, prev_path1)) + return -1; + } else { + if (update_file(opt, 1, a, collide_path)) + return -1; + } - if (ren_src_was_dirty) { - output(o, 1, _("Refusing to lose dirty file at %s"), - rename->path); + /* Put second file (b->oid, b->mode) in its original spot */ + if (prev_path2) { + if (update_file(opt, 1, b, prev_path2)) + return -1; + } else { + if (update_file(opt, 1, b, collide_path)) + return -1; } + + /* Don't leave something at collision path if unrenaming both */ + if (prev_path1 && prev_path2) + remove_file(opt, 1, collide_path, 0); + + return 0; + } + + /* Remove rename sources if rename/add or rename/rename(2to1) */ + if (prev_path1) + remove_file(opt, 1, prev_path1, + opt->priv->call_depth || would_lose_untracked(opt, prev_path1)); + if (prev_path2) + remove_file(opt, 1, prev_path2, + opt->priv->call_depth || would_lose_untracked(opt, prev_path2)); + + /* + * Remove the collision path, if it wouldn't cause dirty contents + * or an untracked file to get lost. We'll either overwrite with + * merged contents, or just write out to differently named files. + */ + if (was_dirty(opt, collide_path)) { + output(opt, 1, _("Refusing to lose dirty file at %s"), + collide_path); + update_path = alt_path = unique_path(opt, collide_path, "merged"); + } else if (would_lose_untracked(opt, collide_path)) { /* - * Because the double negatives somehow keep confusing me... - * 1) update_wd iff !ren_src_was_dirty. - * 2) no_wd iff !update_wd - * 3) so, no_wd == !!ren_src_was_dirty == ren_src_was_dirty + * Only way we get here is if both renames were from + * a directory rename AND user had an untracked file + * at the location where both files end up after the + * two directory renames. See testcase 10d of t6043. */ - remove_file(o, 0, rename->path, ren_src_was_dirty); - dst_name = unique_path(o, rename->path, cur_branch); + output(opt, 1, _("Refusing to lose untracked file at " + "%s, even though it's in the way."), + collide_path); + update_path = alt_path = unique_path(opt, collide_path, "merged"); } else { - if (dir_in_way(rename->path, !o->call_depth, 0)) { - dst_name = unique_path(o, rename->path, cur_branch); - output(o, 1, _("%s is a directory in %s adding as %s instead"), - rename->path, other_branch, dst_name); - } else if (!o->call_depth && - would_lose_untracked(rename->path)) { - dst_name = unique_path(o, rename->path, cur_branch); - output(o, 1, _("Refusing to lose untracked file at %s; " - "adding as %s instead"), - rename->path, dst_name); - } + /* + * FIXME: It's possible that the two files are identical + * and that the current working copy happens to match, in + * which case we are unnecessarily touching the working + * tree file. It's not a likely enough scenario that I + * want to code up the checks for it and a better fix is + * available if we restructure how unpack_trees() and + * merge-recursive interoperate anyway, so punting for + * now... + */ + remove_file(opt, 0, collide_path, 0); } - if ((ret = update_file(o, 0, &rename->oid, rename->mode, dst_name))) - ; /* fall through, do allow dst_name to be released */ - else if (stage == 2) - ret = update_stages(o, rename->path, NULL, rename, add); - else - ret = update_stages(o, rename->path, NULL, add, rename); - if (dst_name != rename->path) - free(dst_name); + /* Store things in diff_filespecs for functions that need it */ + null.path = (char *)collide_path; + oidcpy(&null.oid, &null_oid); + null.mode = 0; - return ret; + if (merge_mode_and_contents(opt, &null, a, b, collide_path, + branch1, branch2, opt->priv->call_depth * 2, &mfi)) + return -1; + mfi.clean &= !alt_path; + if (update_file(opt, mfi.clean, &mfi.blob, update_path)) + return -1; + if (!mfi.clean && !opt->priv->call_depth && + update_stages(opt, collide_path, NULL, a, b)) + return -1; + free(alt_path); + /* + * FIXME: If both a & b both started with conflicts (only possible + * if they came from a rename/rename(2to1)), but had IDENTICAL + * contents including those conflicts, then in the next line we claim + * it was clean. If someone cares about this case, we should have the + * caller notify us if we started with conflicts. + */ + return mfi.clean; +} + +static int handle_rename_add(struct merge_options *opt, + struct rename_conflict_info *ci) +{ + /* a was renamed to c, and a separate c was added. */ + struct diff_filespec *a = ci->ren1->pair->one; + struct diff_filespec *c = ci->ren1->pair->two; + char *path = c->path; + char *prev_path_desc; + struct merge_file_info mfi; + + const char *rename_branch = ci->ren1->branch; + const char *add_branch = (opt->branch1 == rename_branch ? + opt->branch2 : opt->branch1); + int other_stage = (ci->ren1->branch == opt->branch1 ? 3 : 2); + + output(opt, 1, _("CONFLICT (rename/add): " + "Rename %s->%s in %s. Added %s in %s"), + a->path, c->path, rename_branch, + c->path, add_branch); + + prev_path_desc = xstrfmt("version of %s from %s", path, a->path); + ci->ren1->src_entry->stages[other_stage].path = a->path; + if (merge_mode_and_contents(opt, a, c, + &ci->ren1->src_entry->stages[other_stage], + prev_path_desc, + opt->branch1, opt->branch2, + 1 + opt->priv->call_depth * 2, &mfi)) + return -1; + free(prev_path_desc); + + ci->ren1->dst_entry->stages[other_stage].path = mfi.blob.path = c->path; + return handle_file_collision(opt, + c->path, a->path, NULL, + rename_branch, add_branch, + &mfi.blob, + &ci->ren1->dst_entry->stages[other_stage]); +} + +static char *find_path_for_conflict(struct merge_options *opt, + const char *path, + const char *branch1, + const char *branch2) +{ + char *new_path = NULL; + if (dir_in_way(opt->repo->index, path, !opt->priv->call_depth, 0)) { + new_path = unique_path(opt, path, branch1); + output(opt, 1, _("%s is a directory in %s adding " + "as %s instead"), + path, branch2, new_path); + } else if (would_lose_untracked(opt, path)) { + new_path = unique_path(opt, path, branch1); + output(opt, 1, _("Refusing to lose untracked file" + " at %s; adding as %s instead"), + path, new_path); + } + + return new_path; } -static int handle_rename_rename_1to2(struct merge_options *o, +static int handle_rename_rename_1to2(struct merge_options *opt, struct rename_conflict_info *ci) { /* One file was renamed in both branches, but to different names. */ - struct diff_filespec *one = ci->pair1->one; - struct diff_filespec *a = ci->pair1->two; - struct diff_filespec *b = ci->pair2->two; + struct merge_file_info mfi; + struct diff_filespec *add; + struct diff_filespec *o = ci->ren1->pair->one; + struct diff_filespec *a = ci->ren1->pair->two; + struct diff_filespec *b = ci->ren2->pair->two; + char *path_desc; - output(o, 1, _("CONFLICT (rename/rename): " + output(opt, 1, _("CONFLICT (rename/rename): " "Rename \"%s\"->\"%s\" in branch \"%s\" " "rename \"%s\"->\"%s\" in \"%s\"%s"), - one->path, a->path, ci->branch1, - one->path, b->path, ci->branch2, - o->call_depth ? _(" (left unresolved)") : ""); - if (o->call_depth) { - struct merge_file_info mfi; - struct diff_filespec other; - struct diff_filespec *add; - if (merge_mode_and_contents(o, one, a, b, one->path, - ci->branch1, ci->branch2, &mfi)) - return -1; + o->path, a->path, ci->ren1->branch, + o->path, b->path, ci->ren2->branch, + opt->priv->call_depth ? _(" (left unresolved)") : ""); + + path_desc = xstrfmt("%s and %s, both renamed from %s", + a->path, b->path, o->path); + if (merge_mode_and_contents(opt, o, a, b, path_desc, + ci->ren1->branch, ci->ren2->branch, + opt->priv->call_depth * 2, &mfi)) + return -1; + free(path_desc); + if (opt->priv->call_depth) { /* * FIXME: For rename/add-source conflicts (if we could detect * such), this is wrong. We should instead find a unique * pathname and then either rename the add-source file to that * unique path, or use that unique path instead of src here. */ - if (update_file(o, 0, &mfi.oid, mfi.mode, one->path)) + if (update_file(opt, 0, &mfi.blob, o->path)) return -1; /* @@ -1661,136 +1756,134 @@ static int handle_rename_rename_1to2(struct merge_options *o, * such cases, we should keep the added file around, * resolving the conflict at that path in its favor. */ - add = filespec_from_entry(&other, ci->dst_entry1, 2 ^ 1); - if (add) { - if (update_file(o, 0, &add->oid, add->mode, a->path)) + add = &ci->ren1->dst_entry->stages[2 ^ 1]; + if (is_valid(add)) { + if (update_file(opt, 0, add, a->path)) return -1; } else - remove_file_from_cache(a->path); - add = filespec_from_entry(&other, ci->dst_entry2, 3 ^ 1); - if (add) { - if (update_file(o, 0, &add->oid, add->mode, b->path)) + remove_file_from_index(opt->repo->index, a->path); + add = &ci->ren2->dst_entry->stages[3 ^ 1]; + if (is_valid(add)) { + if (update_file(opt, 0, add, b->path)) return -1; } else - remove_file_from_cache(b->path); - } else if (handle_file(o, a, 2, ci) || handle_file(o, b, 3, ci)) - return -1; + remove_file_from_index(opt->repo->index, b->path); + } else { + /* + * For each destination path, we need to see if there is a + * rename/add collision. If not, we can write the file out + * to the specified location. + */ + add = &ci->ren1->dst_entry->stages[2 ^ 1]; + if (is_valid(add)) { + add->path = mfi.blob.path = a->path; + if (handle_file_collision(opt, a->path, + NULL, NULL, + ci->ren1->branch, + ci->ren2->branch, + &mfi.blob, add) < 0) + return -1; + } else { + char *new_path = find_path_for_conflict(opt, a->path, + ci->ren1->branch, + ci->ren2->branch); + if (update_file(opt, 0, &mfi.blob, + new_path ? new_path : a->path)) + return -1; + free(new_path); + if (update_stages(opt, a->path, NULL, a, NULL)) + return -1; + } + + add = &ci->ren2->dst_entry->stages[3 ^ 1]; + if (is_valid(add)) { + add->path = mfi.blob.path = b->path; + if (handle_file_collision(opt, b->path, + NULL, NULL, + ci->ren1->branch, + ci->ren2->branch, + add, &mfi.blob) < 0) + return -1; + } else { + char *new_path = find_path_for_conflict(opt, b->path, + ci->ren2->branch, + ci->ren1->branch); + if (update_file(opt, 0, &mfi.blob, + new_path ? new_path : b->path)) + return -1; + free(new_path); + if (update_stages(opt, b->path, NULL, NULL, b)) + return -1; + } + } return 0; } -static int handle_rename_rename_2to1(struct merge_options *o, +static int handle_rename_rename_2to1(struct merge_options *opt, struct rename_conflict_info *ci) { /* Two files, a & b, were renamed to the same thing, c. */ - struct diff_filespec *a = ci->pair1->one; - struct diff_filespec *b = ci->pair2->one; - struct diff_filespec *c1 = ci->pair1->two; - struct diff_filespec *c2 = ci->pair2->two; + struct diff_filespec *a = ci->ren1->pair->one; + struct diff_filespec *b = ci->ren2->pair->one; + struct diff_filespec *c1 = ci->ren1->pair->two; + struct diff_filespec *c2 = ci->ren2->pair->two; char *path = c1->path; /* == c2->path */ char *path_side_1_desc; char *path_side_2_desc; struct merge_file_info mfi_c1; struct merge_file_info mfi_c2; - int ret; + int ostage1, ostage2; - output(o, 1, _("CONFLICT (rename/rename): " + output(opt, 1, _("CONFLICT (rename/rename): " "Rename %s->%s in %s. " "Rename %s->%s in %s"), - a->path, c1->path, ci->branch1, - b->path, c2->path, ci->branch2); - - remove_file(o, 1, a->path, o->call_depth || would_lose_untracked(a->path)); - remove_file(o, 1, b->path, o->call_depth || would_lose_untracked(b->path)); + a->path, c1->path, ci->ren1->branch, + b->path, c2->path, ci->ren2->branch); path_side_1_desc = xstrfmt("version of %s from %s", path, a->path); path_side_2_desc = xstrfmt("version of %s from %s", path, b->path); - if (merge_mode_and_contents(o, a, c1, &ci->ren1_other, path_side_1_desc, - o->branch1, o->branch2, &mfi_c1) || - merge_mode_and_contents(o, b, &ci->ren2_other, c2, path_side_2_desc, - o->branch1, o->branch2, &mfi_c2)) + ostage1 = ci->ren1->branch == opt->branch1 ? 3 : 2; + ostage2 = ostage1 ^ 1; + ci->ren1->src_entry->stages[ostage1].path = a->path; + ci->ren2->src_entry->stages[ostage2].path = b->path; + if (merge_mode_and_contents(opt, a, c1, + &ci->ren1->src_entry->stages[ostage1], + path_side_1_desc, + opt->branch1, opt->branch2, + 1 + opt->priv->call_depth * 2, &mfi_c1) || + merge_mode_and_contents(opt, b, + &ci->ren2->src_entry->stages[ostage2], + c2, path_side_2_desc, + opt->branch1, opt->branch2, + 1 + opt->priv->call_depth * 2, &mfi_c2)) return -1; free(path_side_1_desc); free(path_side_2_desc); + mfi_c1.blob.path = path; + mfi_c2.blob.path = path; - if (o->call_depth) { - /* - * If mfi_c1.clean && mfi_c2.clean, then it might make - * sense to do a two-way merge of those results. But, I - * think in all cases, it makes sense to have the virtual - * merge base just undo the renames; they can be detected - * again later for the non-recursive merge. - */ - remove_file(o, 0, path, 0); - ret = update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, a->path); - if (!ret) - ret = update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, - b->path); - } else { - char *new_path1 = unique_path(o, path, ci->branch1); - char *new_path2 = unique_path(o, path, ci->branch2); - output(o, 1, _("Renaming %s to %s and %s to %s instead"), - a->path, new_path1, b->path, new_path2); - if (was_dirty(o, path)) - output(o, 1, _("Refusing to lose dirty file at %s"), - path); - else if (would_lose_untracked(path)) - /* - * Only way we get here is if both renames were from - * a directory rename AND user had an untracked file - * at the location where both files end up after the - * two directory renames. See testcase 10d of t6043. - */ - output(o, 1, _("Refusing to lose untracked file at " - "%s, even though it's in the way."), - path); - else - remove_file(o, 0, path, 0); - ret = update_file(o, 0, &mfi_c1.oid, mfi_c1.mode, new_path1); - if (!ret) - ret = update_file(o, 0, &mfi_c2.oid, mfi_c2.mode, - new_path2); - /* - * unpack_trees() actually populates the index for us for - * "normal" rename/rename(2to1) situtations so that the - * correct entries are at the higher stages, which would - * make the call below to update_stages_for_stage_data - * unnecessary. However, if either of the renames came - * from a directory rename, then unpack_trees() will not - * have gotten the right data loaded into the index, so we - * need to do so now. (While it'd be tempting to move this - * call to update_stages_for_stage_data() to - * apply_directory_rename_modifications(), that would break - * our intermediate calls to would_lose_untracked() since - * those rely on the current in-memory index. See also the - * big "NOTE" in update_stages()). - */ - if (update_stages_for_stage_data(o, path, ci->dst_entry1)) - ret = -1; - - free(new_path2); - free(new_path1); - } - - return ret; + return handle_file_collision(opt, path, a->path, b->path, + ci->ren1->branch, ci->ren2->branch, + &mfi_c1.blob, &mfi_c2.blob); } /* * Get the diff_filepairs changed between o_tree and tree. */ -static struct diff_queue_struct *get_diffpairs(struct merge_options *o, +static struct diff_queue_struct *get_diffpairs(struct merge_options *opt, struct tree *o_tree, struct tree *tree) { struct diff_queue_struct *ret; struct diff_options opts; - repo_diff_setup(the_repository, &opts); + repo_diff_setup(opt->repo, &opts); opts.flags.recursive = 1; opts.flags.rename_empty = 0; - opts.detect_rename = merge_detect_rename(o); + opts.detect_rename = merge_detect_rename(opt); /* * We do not have logic to handle the detection of copies. In * fact, it may not even make sense to add such logic: would we @@ -1799,17 +1892,15 @@ static struct diff_queue_struct *get_diffpairs(struct merge_options *o, */ if (opts.detect_rename > DIFF_DETECT_RENAME) opts.detect_rename = DIFF_DETECT_RENAME; - opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit : - o->diff_rename_limit >= 0 ? o->diff_rename_limit : - 1000; - opts.rename_score = o->rename_score; - opts.show_rename_progress = o->show_rename_progress; + opts.rename_limit = (opt->rename_limit >= 0) ? opt->rename_limit : 1000; + opts.rename_score = opt->rename_score; + opts.show_rename_progress = opt->show_rename_progress; opts.output_format = DIFF_FORMAT_NO_OUTPUT; diff_setup_done(&opts); diff_tree_oid(&o_tree->object.oid, &tree->object.oid, "", &opts); diffcore_std(&opts); - if (opts.needed_rename_limit > o->needed_rename_limit) - o->needed_rename_limit = opts.needed_rename_limit; + if (opts.needed_rename_limit > opt->priv->needed_rename_limit) + opt->priv->needed_rename_limit = opts.needed_rename_limit; ret = xmalloc(sizeof(*ret)); *ret = diff_queued_diff; @@ -1821,12 +1912,14 @@ static struct diff_queue_struct *get_diffpairs(struct merge_options *o, return ret; } -static int tree_has_path(struct tree *tree, const char *path) +static int tree_has_path(struct repository *r, struct tree *tree, + const char *path) { struct object_id hashy; - unsigned int mode_o; + unsigned short mode_o; - return !get_tree_entry(&tree->object.oid, path, + return !get_tree_entry(r, + &tree->object.oid, path, &hashy, &mode_o); } @@ -1847,6 +1940,16 @@ static char *apply_dir_rename(struct dir_rename_entry *entry, return NULL; oldlen = strlen(entry->dir); + if (entry->new_dir.len == 0) + /* + * If someone renamed/merged a subdirectory into the root + * directory (e.g. 'some/subdir' -> ''), then we want to + * avoid returning + * '' + '/filename' + * as the rename; we need to make old_path + oldlen advance + * past the '/' character. + */ + oldlen++; newlen = entry->new_dir.len + (strlen(old_path) - oldlen) + 1; strbuf_grow(&new_path, newlen); strbuf_addbuf(&new_path, &entry->new_dir); @@ -1859,8 +1962,8 @@ static void get_renamed_dir_portion(const char *old_path, const char *new_path, char **old_dir, char **new_dir) { char *end_of_old, *end_of_new; - int old_len, new_len; + /* Default return values: NULL, meaning no rename */ *old_dir = NULL; *new_dir = NULL; @@ -1871,43 +1974,91 @@ static void get_renamed_dir_portion(const char *old_path, const char *new_path, * "a/b/c/d" was renamed to "a/b/some/thing/else" * so, for this example, this function returns "a/b/c/d" in * *old_dir and "a/b/some/thing/else" in *new_dir. - * - * Also, if the basename of the file changed, we don't care. We - * want to know which portion of the directory, if any, changed. + */ + + /* + * If the basename of the file changed, we don't care. We want + * to know which portion of the directory, if any, changed. */ end_of_old = strrchr(old_path, '/'); end_of_new = strrchr(new_path, '/'); - if (end_of_old == NULL || end_of_new == NULL) + /* + * If end_of_old is NULL, old_path wasn't in a directory, so there + * could not be a directory rename (our rule elsewhere that a + * directory which still exists is not considered to have been + * renamed means the root directory can never be renamed -- because + * the root directory always exists). + */ + if (end_of_old == NULL) + return; /* Note: *old_dir and *new_dir are still NULL */ + + /* + * If new_path contains no directory (end_of_new is NULL), then we + * have a rename of old_path's directory to the root directory. + */ + if (end_of_new == NULL) { + *old_dir = xstrndup(old_path, end_of_old - old_path); + *new_dir = xstrdup(""); return; + } + + /* Find the first non-matching character traversing backwards */ while (*--end_of_new == *--end_of_old && end_of_old != old_path && end_of_new != new_path) ; /* Do nothing; all in the while loop */ + /* - * We've found the first non-matching character in the directory - * paths. That means the current directory we were comparing - * represents the rename. Move end_of_old and end_of_new back - * to the full directory name. + * If both got back to the beginning of their strings, then the + * directory didn't change at all, only the basename did. */ - if (*end_of_old == '/') - end_of_old++; - if (*end_of_old != '/') - end_of_new++; - end_of_old = strchr(end_of_old, '/'); - end_of_new = strchr(end_of_new, '/'); + if (end_of_old == old_path && end_of_new == new_path && + *end_of_old == *end_of_new) + return; /* Note: *old_dir and *new_dir are still NULL */ /* - * It may have been the case that old_path and new_path were the same - * directory all along. Don't claim a rename if they're the same. + * If end_of_new got back to the beginning of its string, and + * end_of_old got back to the beginning of some subdirectory, then + * we have a rename/merge of a subdirectory into the root, which + * needs slightly special handling. + * + * Note: There is no need to consider the opposite case, with a + * rename/merge of the root directory into some subdirectory + * because as noted above the root directory always exists so it + * cannot be considered to be renamed. */ - old_len = end_of_old - old_path; - new_len = end_of_new - new_path; - - if (old_len != new_len || strncmp(old_path, new_path, old_len)) { - *old_dir = xstrndup(old_path, old_len); - *new_dir = xstrndup(new_path, new_len); + if (end_of_new == new_path && + end_of_old != old_path && end_of_old[-1] == '/') { + *old_dir = xstrndup(old_path, --end_of_old - old_path); + *new_dir = xstrdup(""); + return; } + + /* + * We've found the first non-matching character in the directory + * paths. That means the current characters we were looking at + * were part of the first non-matching subdir name going back from + * the end of the strings. Get the whole name by advancing both + * end_of_old and end_of_new to the NEXT '/' character. That will + * represent the entire directory rename. + * + * The reason for the increment is cases like + * a/b/star/foo/whatever.c -> a/b/tar/foo/random.c + * After dropping the basename and going back to the first + * non-matching character, we're now comparing: + * a/b/s and a/b/ + * and we want to be comparing: + * a/b/star/ and a/b/tar/ + * but without the pre-increment, the one on the right would stay + * a/b/. + */ + end_of_old = strchr(++end_of_old, '/'); + end_of_new = strchr(++end_of_new, '/'); + + /* Copy the old and new directories into *old_dir and *new_dir. */ + *old_dir = xstrndup(old_path, end_of_old - old_path); + *new_dir = xstrndup(new_path, end_of_new - new_path); } static void remove_hashmap_entries(struct hashmap *dir_renames, @@ -1918,7 +2069,7 @@ static void remove_hashmap_entries(struct hashmap *dir_renames, for (i = 0; i < items_to_remove->nr; i++) { entry = items_to_remove->items[i].util; - hashmap_remove(dir_renames, entry, NULL); + hashmap_remove(dir_renames, &entry->ent, NULL); } string_list_clear(items_to_remove, 0); } @@ -1928,7 +2079,7 @@ static void remove_hashmap_entries(struct hashmap *dir_renames, * level conflicts for the renamed location. If there is a rename and * there are no conflicts, return the new name. Otherwise, return NULL. */ -static char *handle_path_level_conflicts(struct merge_options *o, +static char *handle_path_level_conflicts(struct merge_options *opt, const char *path, struct dir_rename_entry *entry, struct hashmap *collisions, @@ -1949,7 +2100,7 @@ static char *handle_path_level_conflicts(struct merge_options *o, /* This should only happen when entry->non_unique_new_dir set */ if (!entry->non_unique_new_dir) BUG("entry->non_unqiue_dir not set and !new_path"); - output(o, 1, _("CONFLICT (directory rename split): " + output(opt, 1, _("CONFLICT (directory rename split): " "Unclear where to place %s because directory " "%s was renamed to multiple other directories, " "with no destination getting a majority of the " @@ -1977,11 +2128,11 @@ static char *handle_path_level_conflicts(struct merge_options *o, */ if (collision_ent->reported_already) { clean = 0; - } else if (tree_has_path(tree, new_path)) { + } else if (tree_has_path(opt->repo, tree, new_path)) { collision_ent->reported_already = 1; strbuf_add_separated_string_list(&collision_paths, ", ", &collision_ent->source_files); - output(o, 1, _("CONFLICT (implicit dir rename): Existing " + output(opt, 1, _("CONFLICT (implicit dir rename): Existing " "file/dir at %s in the way of implicit " "directory rename(s) putting the following " "path(s) there: %s."), @@ -1991,7 +2142,7 @@ static char *handle_path_level_conflicts(struct merge_options *o, collision_ent->reported_already = 1; strbuf_add_separated_string_list(&collision_paths, ", ", &collision_ent->source_files); - output(o, 1, _("CONFLICT (implicit dir rename): Cannot map " + output(opt, 1, _("CONFLICT (implicit dir rename): Cannot map " "more than one path to %s; implicit directory " "renames tried to put these paths there: %s"), new_path, collision_paths.buf); @@ -2028,7 +2179,7 @@ static char *handle_path_level_conflicts(struct merge_options *o, * causes conflicts for files within those merged directories, then * that should be detected at the individual path level. */ -static void handle_directory_level_conflicts(struct merge_options *o, +static void handle_directory_level_conflicts(struct merge_options *opt, struct hashmap *dir_re_head, struct tree *head, struct hashmap *dir_re_merge, @@ -2041,8 +2192,8 @@ static void handle_directory_level_conflicts(struct merge_options *o, struct string_list remove_from_head = STRING_LIST_INIT_NODUP; struct string_list remove_from_merge = STRING_LIST_INIT_NODUP; - hashmap_iter_init(dir_re_head, &iter); - while ((head_ent = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(dir_re_head, &iter, head_ent, + ent /* member name */) { merge_ent = dir_rename_find_entry(dir_re_merge, head_ent->dir); if (merge_ent && !head_ent->non_unique_new_dir && @@ -2055,7 +2206,7 @@ static void handle_directory_level_conflicts(struct merge_options *o, string_list_append(&remove_from_merge, merge_ent->dir)->util = merge_ent; strbuf_release(&merge_ent->new_dir); - } else if (tree_has_path(head, head_ent->dir)) { + } else if (tree_has_path(opt->repo, head, head_ent->dir)) { /* 2. This wasn't a directory rename after all */ string_list_append(&remove_from_head, head_ent->dir)->util = head_ent; @@ -2066,10 +2217,10 @@ static void handle_directory_level_conflicts(struct merge_options *o, remove_hashmap_entries(dir_re_head, &remove_from_head); remove_hashmap_entries(dir_re_merge, &remove_from_merge); - hashmap_iter_init(dir_re_merge, &iter); - while ((merge_ent = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(dir_re_merge, &iter, merge_ent, + ent /* member name */) { head_ent = dir_rename_find_entry(dir_re_head, merge_ent->dir); - if (tree_has_path(merge, merge_ent->dir)) { + if (tree_has_path(opt->repo, merge, merge_ent->dir)) { /* 2. This wasn't a directory rename after all */ string_list_append(&remove_from_merge, merge_ent->dir)->util = merge_ent; @@ -2083,11 +2234,11 @@ static void handle_directory_level_conflicts(struct merge_options *o, * know that head_ent->new_dir and merge_ent->new_dir * are different strings. */ - output(o, 1, _("CONFLICT (rename/rename): " + output(opt, 1, _("CONFLICT (rename/rename): " "Rename directory %s->%s in %s. " "Rename directory %s->%s in %s"), - head_ent->dir, head_ent->new_dir.buf, o->branch1, - head_ent->dir, merge_ent->new_dir.buf, o->branch2); + head_ent->dir, head_ent->new_dir.buf, opt->branch1, + head_ent->dir, merge_ent->new_dir.buf, opt->branch2); string_list_append(&remove_from_head, head_ent->dir)->util = head_ent; strbuf_release(&head_ent->new_dir); @@ -2101,8 +2252,7 @@ static void handle_directory_level_conflicts(struct merge_options *o, remove_hashmap_entries(dir_re_merge, &remove_from_merge); } -static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs, - struct tree *tree) +static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs) { struct hashmap *dir_renames; struct hashmap_iter iter; @@ -2147,7 +2297,7 @@ static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs, if (!entry) { entry = xmalloc(sizeof(*entry)); dir_rename_entry_init(entry, old_dir); - hashmap_put(dir_renames, entry); + hashmap_put(dir_renames, &entry->ent); } else { free(old_dir); } @@ -2172,8 +2322,8 @@ static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs, * we set non_unique_new_dir. Once we've determined the winner (or * that there is no winner), we no longer need possible_new_dirs. */ - hashmap_iter_init(dir_renames, &iter); - while ((entry = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(dir_renames, &iter, entry, + ent /* member name */) { int max = 0; int bad_max = 0; char *best = NULL; @@ -2276,8 +2426,9 @@ static void compute_collisions(struct hashmap *collisions, if (!collision_ent) { collision_ent = xcalloc(1, sizeof(struct collision_entry)); - hashmap_entry_init(collision_ent, strhash(new_path)); - hashmap_put(collisions, collision_ent); + hashmap_entry_init(&collision_ent->ent, + strhash(new_path)); + hashmap_put(collisions, &collision_ent->ent); collision_ent->target_file = new_path; } else { free(new_path); @@ -2287,7 +2438,7 @@ static void compute_collisions(struct hashmap *collisions, } } -static char *check_for_directory_rename(struct merge_options *o, +static char *check_for_directory_rename(struct merge_options *opt, const char *path, struct tree *tree, struct hashmap *dir_renames, @@ -2328,11 +2479,11 @@ static char *check_for_directory_rename(struct merge_options *o, */ oentry = dir_rename_find_entry(dir_rename_exclusions, entry->new_dir.buf); if (oentry) { - output(o, 1, _("WARNING: Avoiding applying %s -> %s rename " + output(opt, 1, _("WARNING: Avoiding applying %s -> %s rename " "to %s, because %s itself was renamed."), entry->dir, entry->new_dir.buf, path, entry->new_dir.buf); } else { - new_path = handle_path_level_conflicts(o, path, entry, + new_path = handle_path_level_conflicts(opt, path, entry, collisions, tree); *clean_merge &= (new_path != NULL); } @@ -2340,7 +2491,7 @@ static char *check_for_directory_rename(struct merge_options *o, return new_path; } -static void apply_directory_rename_modifications(struct merge_options *o, +static void apply_directory_rename_modifications(struct merge_options *opt, struct diff_filepair *pair, char *new_path, struct rename *re, @@ -2348,8 +2499,7 @@ static void apply_directory_rename_modifications(struct merge_options *o, struct tree *o_tree, struct tree *a_tree, struct tree *b_tree, - struct string_list *entries, - int *clean) + struct string_list *entries) { struct string_list_item *item; int stage = (tree == a_tree ? 2 : 3); @@ -2364,11 +2514,11 @@ static void apply_directory_rename_modifications(struct merge_options *o, * saying the file would have been overwritten), but it might * be dirty, though. */ - update_wd = !was_dirty(o, pair->two->path); + update_wd = !was_dirty(opt, pair->two->path); if (!update_wd) - output(o, 1, _("Refusing to lose dirty file at %s"), + output(opt, 1, _("Refusing to lose dirty file at %s"), pair->two->path); - remove_file(o, 1, pair->two->path, !update_wd); + remove_file(opt, 1, pair->two->path, !update_wd); /* Find or create a new re->dst_entry */ item = string_list_lookup(entries, new_path); @@ -2400,7 +2550,7 @@ static void apply_directory_rename_modifications(struct merge_options *o, if (pair->status == 'R') re->dst_entry->processed = 1; - re->dst_entry = insert_stage_data(new_path, + re->dst_entry = insert_stage_data(opt->repo, new_path, o_tree, a_tree, b_tree, entries); item = string_list_insert(entries, new_path); @@ -2423,21 +2573,24 @@ static void apply_directory_rename_modifications(struct merge_options *o, * the various handle_rename_*() functions update the index * explicitly rather than relying on unpack_trees() to have done it. */ - get_tree_entry(&tree->object.oid, + get_tree_entry(opt->repo, + &tree->object.oid, pair->two->path, &re->dst_entry->stages[stage].oid, &re->dst_entry->stages[stage].mode); - /* Update pair status */ - if (pair->status == 'A') { - /* - * Recording rename information for this add makes it look - * like a rename/delete conflict. Make sure we can - * correctly handle this as an add that was moved to a new - * directory instead of reporting a rename/delete conflict. - */ - re->add_turned_into_rename = 1; - } + /* + * Record the original change status (or 'type' of change). If it + * was originally an add ('A'), this lets us differentiate later + * between a RENAME_DELETE conflict and RENAME_VIA_DIR (they + * otherwise look the same). If it was originally a rename ('R'), + * this lets us remember and report accurately about the transitive + * renaming that occurred via the directory rename detection. Also, + * record the original destination name. + */ + re->dir_rename_original_type = pair->status; + re->dir_rename_original_dest = pair->two->path; + /* * We don't actually look at pair->status again, but it seems * pedagogically correct to adjust it. @@ -2457,7 +2610,8 @@ static void apply_directory_rename_modifications(struct merge_options *o, * to be able to associate the correct cache entries with the rename * information; tree is always equal to either a_tree or b_tree. */ -static struct string_list *get_renames(struct merge_options *o, +static struct string_list *get_renames(struct merge_options *opt, + const char *branch, struct diff_queue_struct *pairs, struct hashmap *dir_renames, struct hashmap *dir_rename_exclusions, @@ -2487,7 +2641,7 @@ static struct string_list *get_renames(struct merge_options *o, diff_free_filepair(pair); continue; } - new_path = check_for_directory_rename(o, pair->two->path, tree, + new_path = check_for_directory_rename(opt, pair->two->path, tree, dir_renames, dir_rename_exclusions, &collisions, @@ -2499,41 +2653,44 @@ static struct string_list *get_renames(struct merge_options *o, re = xmalloc(sizeof(*re)); re->processed = 0; - re->add_turned_into_rename = 0; re->pair = pair; + re->branch = branch; + re->dir_rename_original_type = '\0'; + re->dir_rename_original_dest = NULL; item = string_list_lookup(entries, re->pair->one->path); if (!item) - re->src_entry = insert_stage_data(re->pair->one->path, + re->src_entry = insert_stage_data(opt->repo, + re->pair->one->path, o_tree, a_tree, b_tree, entries); else re->src_entry = item->util; item = string_list_lookup(entries, re->pair->two->path); if (!item) - re->dst_entry = insert_stage_data(re->pair->two->path, + re->dst_entry = insert_stage_data(opt->repo, + re->pair->two->path, o_tree, a_tree, b_tree, entries); else re->dst_entry = item->util; item = string_list_insert(renames, pair->one->path); item->util = re; if (new_path) - apply_directory_rename_modifications(o, pair, new_path, + apply_directory_rename_modifications(opt, pair, new_path, re, tree, o_tree, a_tree, b_tree, - entries, - clean_merge); + entries); } - hashmap_iter_init(&collisions, &iter); - while ((e = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(&collisions, &iter, e, + ent /* member name */) { free(e->target_file); string_list_clear(&e->source_files, 0); } - hashmap_free(&collisions, 1); + hashmap_free_entries(&collisions, struct collision_entry, ent); return renames; } -static int process_renames(struct merge_options *o, +static int process_renames(struct merge_options *opt, struct string_list *a_renames, struct string_list *b_renames) { @@ -2556,7 +2713,6 @@ static int process_renames(struct merge_options *o, for (i = 0, j = 0; i < a_renames->nr || j < b_renames->nr;) { struct string_list *renames1, *renames2Dst; struct rename *ren1 = NULL, *ren2 = NULL; - const char *branch1, *branch2; const char *ren1_src, *ren1_dst; struct string_list_item *lookup; @@ -2577,13 +2733,9 @@ static int process_renames(struct merge_options *o, if (ren1) { renames1 = a_renames; renames2Dst = &b_by_dst; - branch1 = o->branch1; - branch2 = o->branch2; } else { renames1 = b_renames; renames2Dst = &a_by_dst; - branch1 = o->branch2; - branch2 = o->branch1; SWAP(ren2, ren1); } @@ -2617,22 +2769,13 @@ static int process_renames(struct merge_options *o, * the base stage (think of rename + * add-source cases). */ - remove_file(o, 1, ren1_src, 1); + remove_file(opt, 1, ren1_src, 1); update_entry(ren1->dst_entry, ren1->pair->one, ren1->pair->two, ren2->pair->two); } - setup_rename_conflict_info(rename_type, - ren1->pair, - ren2->pair, - branch1, - branch2, - ren1->dst_entry, - ren2->dst_entry, - o, - NULL, - NULL); + setup_rename_conflict_info(rename_type, opt, ren1, ren2); } else if ((lookup = string_list_lookup(renames2Dst, ren1_dst))) { /* Two different files renamed to the same thing */ char *ren2_dst; @@ -2651,16 +2794,7 @@ static int process_renames(struct merge_options *o, ren2->src_entry->processed = 1; setup_rename_conflict_info(RENAME_TWO_FILES_TO_ONE, - ren1->pair, - ren2->pair, - branch1, - branch2, - ren1->dst_entry, - ren2->dst_entry, - o, - ren1->src_entry, - ren2->src_entry); - + opt, ren1, ren2); } else { /* Renamed in 1, maybe changed in 2 */ /* we only use sha1 and mode of these */ @@ -2680,8 +2814,8 @@ static int process_renames(struct merge_options *o, * stage and in other_stage (think of rename + * add-source case). */ - remove_file(o, 1, ren1_src, - renamed_stage == 2 || !was_tracked(o, ren1_src)); + remove_file(opt, 1, ren1_src, + renamed_stage == 2 || !was_tracked(opt, ren1_src)); oidcpy(&src_other.oid, &ren1->src_entry->stages[other_stage].oid); @@ -2691,31 +2825,15 @@ static int process_renames(struct merge_options *o, dst_other.mode = ren1->dst_entry->stages[other_stage].mode; try_merge = 0; - if (oid_eq(&src_other.oid, &null_oid) && - ren1->add_turned_into_rename) { + if (oideq(&src_other.oid, &null_oid) && + ren1->dir_rename_original_type == 'A') { setup_rename_conflict_info(RENAME_VIA_DIR, - ren1->pair, - NULL, - branch1, - branch2, - ren1->dst_entry, - NULL, - o, - NULL, - NULL); - } else if (oid_eq(&src_other.oid, &null_oid)) { + opt, ren1, NULL); + } else if (oideq(&src_other.oid, &null_oid)) { setup_rename_conflict_info(RENAME_DELETE, - ren1->pair, - NULL, - branch1, - branch2, - ren1->dst_entry, - NULL, - o, - NULL, - NULL); + opt, ren1, NULL); } else if ((dst_other.mode == ren1->pair->two->mode) && - oid_eq(&dst_other.oid, &ren1->pair->two->oid)) { + oideq(&dst_other.oid, &ren1->pair->two->oid)) { /* * Added file on the other side identical to * the file being renamed: clean merge. @@ -2724,65 +2842,32 @@ static int process_renames(struct merge_options *o, * update_file_flags() instead of * update_file(). */ - if (update_file_flags(o, - &ren1->pair->two->oid, - ren1->pair->two->mode, + if (update_file_flags(opt, + ren1->pair->two, ren1_dst, 1, /* update_cache */ 0 /* update_wd */)) clean_merge = -1; - } else if (!oid_eq(&dst_other.oid, &null_oid)) { - clean_merge = 0; - try_merge = 1; - output(o, 1, _("CONFLICT (rename/add): Rename %s->%s in %s. " - "%s added in %s"), - ren1_src, ren1_dst, branch1, - ren1_dst, branch2); - if (o->call_depth) { - struct merge_file_info mfi; - struct diff_filespec one, a, b; - - oidcpy(&one.oid, &null_oid); - one.mode = 0; - one.path = ren1->pair->two->path; - - oidcpy(&a.oid, &ren1->pair->two->oid); - a.mode = ren1->pair->two->mode; - a.path = one.path; - - oidcpy(&b.oid, &dst_other.oid); - b.mode = dst_other.mode; - b.path = one.path; - - if (merge_mode_and_contents(o, &one, &a, &b, ren1_dst, - branch1, branch2, - &mfi)) { - clean_merge = -1; - goto cleanup_and_return; - } - output(o, 1, _("Adding merged %s"), ren1_dst); - if (update_file(o, 0, &mfi.oid, - mfi.mode, ren1_dst)) - clean_merge = -1; - try_merge = 0; - } else { - char *new_path = unique_path(o, ren1_dst, branch2); - output(o, 1, _("Adding as %s instead"), new_path); - if (update_file(o, 0, &dst_other.oid, - dst_other.mode, new_path)) - clean_merge = -1; - free(new_path); - } + } else if (!oideq(&dst_other.oid, &null_oid)) { + /* + * Probably not a clean merge, but it's + * premature to set clean_merge to 0 here, + * because if the rename merges cleanly and + * the merge exactly matches the newly added + * file, then the merge will be clean. + */ + setup_rename_conflict_info(RENAME_ADD, + opt, ren1, NULL); } else try_merge = 1; if (clean_merge < 0) goto cleanup_and_return; if (try_merge) { - struct diff_filespec *one, *a, *b; + struct diff_filespec *o, *a, *b; src_other.path = (char *)ren1_src; - one = ren1->pair->one; + o = ren1->pair->one; if (a_renames == renames1) { a = ren1->pair->two; b = &src_other; @@ -2790,17 +2875,9 @@ static int process_renames(struct merge_options *o, b = ren1->pair->two; a = &src_other; } - update_entry(ren1->dst_entry, one, a, b); + update_entry(ren1->dst_entry, o, a, b); setup_rename_conflict_info(RENAME_NORMAL, - ren1->pair, - NULL, - branch1, - NULL, - ren1->dst_entry, - NULL, - o, - NULL, - NULL); + opt, ren1, NULL); } } } @@ -2822,20 +2899,20 @@ static void initial_cleanup_rename(struct diff_queue_struct *pairs, struct hashmap_iter iter; struct dir_rename_entry *e; - hashmap_iter_init(dir_renames, &iter); - while ((e = hashmap_iter_next(&iter))) { + hashmap_for_each_entry(dir_renames, &iter, e, + ent /* member name */) { free(e->dir); strbuf_release(&e->new_dir); /* possible_new_dirs already cleared in get_directory_renames */ } - hashmap_free(dir_renames, 1); + hashmap_free_entries(dir_renames, struct dir_rename_entry, ent); free(dir_renames); free(pairs->queue); free(pairs); } -static int detect_and_process_renames(struct merge_options *o, +static int detect_and_process_renames(struct merge_options *opt, struct tree *common, struct tree *head, struct tree *merge, @@ -2849,17 +2926,19 @@ static int detect_and_process_renames(struct merge_options *o, ri->head_renames = NULL; ri->merge_renames = NULL; - if (!merge_detect_rename(o)) + if (!merge_detect_rename(opt)) return 1; - head_pairs = get_diffpairs(o, common, head); - merge_pairs = get_diffpairs(o, common, merge); + head_pairs = get_diffpairs(opt, common, head); + merge_pairs = get_diffpairs(opt, common, merge); - if (o->detect_directory_renames) { - dir_re_head = get_directory_renames(head_pairs, head); - dir_re_merge = get_directory_renames(merge_pairs, merge); + if ((opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_TRUE) || + (opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_CONFLICT && + !opt->priv->call_depth)) { + dir_re_head = get_directory_renames(head_pairs); + dir_re_merge = get_directory_renames(merge_pairs); - handle_directory_level_conflicts(o, + handle_directory_level_conflicts(opt, dir_re_head, head, dir_re_merge, merge); } else { @@ -2869,19 +2948,19 @@ static int detect_and_process_renames(struct merge_options *o, dir_rename_init(dir_re_merge); } - ri->head_renames = get_renames(o, head_pairs, + ri->head_renames = get_renames(opt, opt->branch1, head_pairs, dir_re_merge, dir_re_head, head, common, head, merge, entries, &clean); if (clean < 0) goto cleanup; - ri->merge_renames = get_renames(o, merge_pairs, + ri->merge_renames = get_renames(opt, opt->branch2, merge_pairs, dir_re_head, dir_re_merge, merge, common, head, merge, entries, &clean); if (clean < 0) goto cleanup; - clean &= process_renames(o, ri->head_renames, ri->merge_renames); + clean &= process_renames(opt, ri->head_renames, ri->merge_renames); cleanup: /* @@ -2917,12 +2996,7 @@ static void final_cleanup_renames(struct rename_info *re_info) final_cleanup_rename(re_info->merge_renames); } -static struct object_id *stage_oid(const struct object_id *oid, unsigned mode) -{ - return (is_null_oid(oid) || mode == 0) ? NULL: (struct object_id *)oid; -} - -static int read_oid_strbuf(struct merge_options *o, +static int read_oid_strbuf(struct merge_options *opt, const struct object_id *oid, struct strbuf *dst) { @@ -2931,129 +3005,99 @@ static int read_oid_strbuf(struct merge_options *o, unsigned long size; buf = read_object_file(oid, &type, &size); if (!buf) - return err(o, _("cannot read object %s"), oid_to_hex(oid)); + return err(opt, _("cannot read object %s"), oid_to_hex(oid)); if (type != OBJ_BLOB) { free(buf); - return err(o, _("object %s is not a blob"), oid_to_hex(oid)); + return err(opt, _("object %s is not a blob"), oid_to_hex(oid)); } strbuf_attach(dst, buf, size, size + 1); return 0; } static int blob_unchanged(struct merge_options *opt, - const struct object_id *o_oid, - unsigned o_mode, - const struct object_id *a_oid, - unsigned a_mode, + const struct diff_filespec *o, + const struct diff_filespec *a, int renormalize, const char *path) { - struct strbuf o = STRBUF_INIT; - struct strbuf a = STRBUF_INIT; + struct strbuf obuf = STRBUF_INIT; + struct strbuf abuf = STRBUF_INIT; int ret = 0; /* assume changed for safety */ + const struct index_state *idx = opt->repo->index; - if (a_mode != o_mode) + if (a->mode != o->mode) return 0; - if (oid_eq(o_oid, a_oid)) + if (oideq(&o->oid, &a->oid)) return 1; if (!renormalize) return 0; - assert(o_oid && a_oid); - if (read_oid_strbuf(opt, o_oid, &o) || read_oid_strbuf(opt, a_oid, &a)) + if (read_oid_strbuf(opt, &o->oid, &obuf) || + read_oid_strbuf(opt, &a->oid, &abuf)) goto error_return; /* * Note: binary | is used so that both renormalizations are * performed. Comparison can be skipped if both files are * unchanged since their sha1s have already been compared. */ - if (renormalize_buffer(&the_index, path, o.buf, o.len, &o) | - renormalize_buffer(&the_index, path, a.buf, a.len, &a)) - ret = (o.len == a.len && !memcmp(o.buf, a.buf, o.len)); + if (renormalize_buffer(idx, path, obuf.buf, obuf.len, &obuf) | + renormalize_buffer(idx, path, abuf.buf, abuf.len, &abuf)) + ret = (obuf.len == abuf.len && !memcmp(obuf.buf, abuf.buf, obuf.len)); error_return: - strbuf_release(&o); - strbuf_release(&a); + strbuf_release(&obuf); + strbuf_release(&abuf); return ret; } -static int handle_modify_delete(struct merge_options *o, +static int handle_modify_delete(struct merge_options *opt, const char *path, - struct object_id *o_oid, int o_mode, - struct object_id *a_oid, int a_mode, - struct object_id *b_oid, int b_mode) + const struct diff_filespec *o, + const struct diff_filespec *a, + const struct diff_filespec *b) { const char *modify_branch, *delete_branch; - struct object_id *changed_oid; - int changed_mode; - - if (a_oid) { - modify_branch = o->branch1; - delete_branch = o->branch2; - changed_oid = a_oid; - changed_mode = a_mode; + const struct diff_filespec *changed; + + if (is_valid(a)) { + modify_branch = opt->branch1; + delete_branch = opt->branch2; + changed = a; } else { - modify_branch = o->branch2; - delete_branch = o->branch1; - changed_oid = b_oid; - changed_mode = b_mode; + modify_branch = opt->branch2; + delete_branch = opt->branch1; + changed = b; } - return handle_change_delete(o, + return handle_change_delete(opt, path, NULL, - o_oid, o_mode, - changed_oid, changed_mode, + o, changed, modify_branch, delete_branch, _("modify"), _("modified")); } -static int handle_content_merge(struct merge_options *o, +static int handle_content_merge(struct merge_file_info *mfi, + struct merge_options *opt, const char *path, int is_dirty, - struct object_id *o_oid, int o_mode, - struct object_id *a_oid, int a_mode, - struct object_id *b_oid, int b_mode, - struct rename_conflict_info *rename_conflict_info) + const struct diff_filespec *o, + const struct diff_filespec *a, + const struct diff_filespec *b, + struct rename_conflict_info *ci) { const char *reason = _("content"); - const char *path1 = NULL, *path2 = NULL; - struct merge_file_info mfi; - struct diff_filespec one, a, b; unsigned df_conflict_remains = 0; - if (!o_oid) { + if (!is_valid(o)) reason = _("add/add"); - o_oid = (struct object_id *)&null_oid; - } - one.path = a.path = b.path = (char *)path; - oidcpy(&one.oid, o_oid); - one.mode = o_mode; - oidcpy(&a.oid, a_oid); - a.mode = a_mode; - oidcpy(&b.oid, b_oid); - b.mode = b_mode; - - if (rename_conflict_info) { - struct diff_filepair *pair1 = rename_conflict_info->pair1; - - path1 = (o->branch1 == rename_conflict_info->branch1) ? - pair1->two->path : pair1->one->path; - /* If rename_conflict_info->pair2 != NULL, we are in - * RENAME_ONE_FILE_TO_ONE case. Otherwise, we have a - * normal rename. - */ - path2 = (rename_conflict_info->pair2 || - o->branch2 == rename_conflict_info->branch1) ? - pair1->two->path : pair1->one->path; - one.path = pair1->one->path; - a.path = (char *)path1; - b.path = (char *)path2; - - if (dir_in_way(path, !o->call_depth, - S_ISGITLINK(pair1->two->mode))) - df_conflict_remains = 1; - } - if (merge_mode_and_contents(o, &one, &a, &b, path, - o->branch1, o->branch2, &mfi)) + + assert(o->path && a->path && b->path); + if (ci && dir_in_way(opt->repo->index, path, !opt->priv->call_depth, + S_ISGITLINK(ci->ren1->pair->two->mode))) + df_conflict_remains = 1; + + if (merge_mode_and_contents(opt, o, a, b, path, + opt->branch1, opt->branch2, + opt->priv->call_depth * 2, mfi)) return -1; /* @@ -3062,15 +3106,14 @@ static int handle_content_merge(struct merge_options *o, * b) The merge matches what was in HEAD (content, mode, pathname) * c) The target path is usable (i.e. not involved in D/F conflict) */ - if (mfi.clean && - was_tracked_and_matches(o, path, &mfi.oid, mfi.mode) && + if (mfi->clean && was_tracked_and_matches(opt, path, &mfi->blob) && !df_conflict_remains) { int pos; struct cache_entry *ce; - output(o, 3, _("Skipped %s (merged same as existing)"), path); - if (add_cacheinfo(o, mfi.mode, &mfi.oid, path, - 0, (!o->call_depth && !is_dirty), 0)) + output(opt, 3, _("Skipped %s (merged same as existing)"), path); + if (add_cacheinfo(opt, &mfi->blob, path, + 0, (!opt->priv->call_depth && !is_dirty), 0)) return -1; /* * However, add_cacheinfo() will delete the old cache entry @@ -3078,253 +3121,370 @@ static int handle_content_merge(struct merge_options *o, * flag to avoid making the file appear as if it were * deleted by the user. */ - pos = index_name_pos(&o->orig_index, path, strlen(path)); - ce = o->orig_index.cache[pos]; + pos = index_name_pos(&opt->priv->orig_index, path, strlen(path)); + ce = opt->priv->orig_index.cache[pos]; if (ce_skip_worktree(ce)) { - pos = index_name_pos(&the_index, path, strlen(path)); - ce = the_index.cache[pos]; + pos = index_name_pos(opt->repo->index, path, strlen(path)); + ce = opt->repo->index->cache[pos]; ce->ce_flags |= CE_SKIP_WORKTREE; } - return mfi.clean; + return mfi->clean; } - if (!mfi.clean) { - if (S_ISGITLINK(mfi.mode)) + if (!mfi->clean) { + if (S_ISGITLINK(mfi->blob.mode)) reason = _("submodule"); - output(o, 1, _("CONFLICT (%s): Merge conflict in %s"), + output(opt, 1, _("CONFLICT (%s): Merge conflict in %s"), reason, path); - if (rename_conflict_info && !df_conflict_remains) - if (update_stages(o, path, &one, &a, &b)) + if (ci && !df_conflict_remains) + if (update_stages(opt, path, o, a, b)) return -1; } if (df_conflict_remains || is_dirty) { char *new_path; - if (o->call_depth) { - remove_file_from_cache(path); + if (opt->priv->call_depth) { + remove_file_from_index(opt->repo->index, path); } else { - if (!mfi.clean) { - if (update_stages(o, path, &one, &a, &b)) + if (!mfi->clean) { + if (update_stages(opt, path, o, a, b)) return -1; } else { - int file_from_stage2 = was_tracked(o, path); - struct diff_filespec merged; - oidcpy(&merged.oid, &mfi.oid); - merged.mode = mfi.mode; - - if (update_stages(o, path, NULL, - file_from_stage2 ? &merged : NULL, - file_from_stage2 ? NULL : &merged)) + int file_from_stage2 = was_tracked(opt, path); + + if (update_stages(opt, path, NULL, + file_from_stage2 ? &mfi->blob : NULL, + file_from_stage2 ? NULL : &mfi->blob)) return -1; } } - new_path = unique_path(o, path, rename_conflict_info->branch1); + new_path = unique_path(opt, path, ci->ren1->branch); if (is_dirty) { - output(o, 1, _("Refusing to lose dirty file at %s"), + output(opt, 1, _("Refusing to lose dirty file at %s"), path); } - output(o, 1, _("Adding as %s instead"), new_path); - if (update_file(o, 0, &mfi.oid, mfi.mode, new_path)) { + output(opt, 1, _("Adding as %s instead"), new_path); + if (update_file(opt, 0, &mfi->blob, new_path)) { free(new_path); return -1; } free(new_path); - mfi.clean = 0; - } else if (update_file(o, mfi.clean, &mfi.oid, mfi.mode, path)) + mfi->clean = 0; + } else if (update_file(opt, mfi->clean, &mfi->blob, path)) return -1; - return !is_dirty && mfi.clean; + return !is_dirty && mfi->clean; } -static int handle_rename_normal(struct merge_options *o, +static int handle_rename_normal(struct merge_options *opt, const char *path, - struct object_id *o_oid, unsigned int o_mode, - struct object_id *a_oid, unsigned int a_mode, - struct object_id *b_oid, unsigned int b_mode, + const struct diff_filespec *o, + const struct diff_filespec *a, + const struct diff_filespec *b, struct rename_conflict_info *ci) { + struct rename *ren = ci->ren1; + struct merge_file_info mfi; + int clean; + int side = (ren->branch == opt->branch1 ? 2 : 3); + /* Merge the content and write it out */ - return handle_content_merge(o, path, was_dirty(o, path), - o_oid, o_mode, a_oid, a_mode, b_oid, b_mode, - ci); + clean = handle_content_merge(&mfi, opt, path, was_dirty(opt, path), + o, a, b, ci); + + if (clean && + opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_CONFLICT && + ren->dir_rename_original_dest) { + if (update_stages(opt, path, + NULL, + side == 2 ? &mfi.blob : NULL, + side == 2 ? NULL : &mfi.blob)) + return -1; + clean = 0; /* not clean, but conflicted */ + } + return clean; +} + +static void dir_rename_warning(const char *msg, + int is_add, + int clean, + struct merge_options *opt, + struct rename *ren) +{ + const char *other_branch; + other_branch = (ren->branch == opt->branch1 ? + opt->branch2 : opt->branch1); + if (is_add) { + output(opt, clean ? 2 : 1, msg, + ren->pair->one->path, ren->branch, + other_branch, ren->pair->two->path); + return; + } + output(opt, clean ? 2 : 1, msg, + ren->pair->one->path, ren->dir_rename_original_dest, ren->branch, + other_branch, ren->pair->two->path); +} +static int warn_about_dir_renamed_entries(struct merge_options *opt, + struct rename *ren) +{ + const char *msg; + int clean = 1, is_add; + + if (!ren) + return clean; + + /* Return early if ren was not affected/created by a directory rename */ + if (!ren->dir_rename_original_dest) + return clean; + + /* Sanity checks */ + assert(opt->detect_directory_renames > MERGE_DIRECTORY_RENAMES_NONE); + assert(ren->dir_rename_original_type == 'A' || + ren->dir_rename_original_type == 'R'); + + /* Check whether to treat directory renames as a conflict */ + clean = (opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_TRUE); + + is_add = (ren->dir_rename_original_type == 'A'); + if (ren->dir_rename_original_type == 'A' && clean) { + msg = _("Path updated: %s added in %s inside a " + "directory that was renamed in %s; moving it to %s."); + } else if (ren->dir_rename_original_type == 'A' && !clean) { + msg = _("CONFLICT (file location): %s added in %s " + "inside a directory that was renamed in %s, " + "suggesting it should perhaps be moved to %s."); + } else if (ren->dir_rename_original_type == 'R' && clean) { + msg = _("Path updated: %s renamed to %s in %s, inside a " + "directory that was renamed in %s; moving it to %s."); + } else if (ren->dir_rename_original_type == 'R' && !clean) { + msg = _("CONFLICT (file location): %s renamed to %s in %s, " + "inside a directory that was renamed in %s, " + "suggesting it should perhaps be moved to %s."); + } else { + BUG("Impossible dir_rename_original_type/clean combination"); + } + dir_rename_warning(msg, is_add, clean, opt, ren); + + return clean; } /* Per entry merge function */ -static int process_entry(struct merge_options *o, +static int process_entry(struct merge_options *opt, const char *path, struct stage_data *entry) { int clean_merge = 1; - int normalize = o->renormalize; - unsigned o_mode = entry->stages[1].mode; - unsigned a_mode = entry->stages[2].mode; - unsigned b_mode = entry->stages[3].mode; - struct object_id *o_oid = stage_oid(&entry->stages[1].oid, o_mode); - struct object_id *a_oid = stage_oid(&entry->stages[2].oid, a_mode); - struct object_id *b_oid = stage_oid(&entry->stages[3].oid, b_mode); + int normalize = opt->renormalize; + + struct diff_filespec *o = &entry->stages[1]; + struct diff_filespec *a = &entry->stages[2]; + struct diff_filespec *b = &entry->stages[3]; + int o_valid = is_valid(o); + int a_valid = is_valid(a); + int b_valid = is_valid(b); + o->path = a->path = b->path = (char*)path; entry->processed = 1; if (entry->rename_conflict_info) { - struct rename_conflict_info *conflict_info = entry->rename_conflict_info; - switch (conflict_info->rename_type) { + struct rename_conflict_info *ci = entry->rename_conflict_info; + struct diff_filespec *temp; + int path_clean; + + path_clean = warn_about_dir_renamed_entries(opt, ci->ren1); + path_clean &= warn_about_dir_renamed_entries(opt, ci->ren2); + + /* + * For cases with a single rename, {o,a,b}->path have all been + * set to the rename target path; we need to set two of these + * back to the rename source. + * For rename/rename conflicts, we'll manually fix paths below. + */ + temp = (opt->branch1 == ci->ren1->branch) ? b : a; + o->path = temp->path = ci->ren1->pair->one->path; + if (ci->ren2) { + assert(opt->branch1 == ci->ren1->branch); + } + + switch (ci->rename_type) { case RENAME_NORMAL: case RENAME_ONE_FILE_TO_ONE: - clean_merge = handle_rename_normal(o, - path, - o_oid, o_mode, - a_oid, a_mode, - b_oid, b_mode, - conflict_info); + clean_merge = handle_rename_normal(opt, path, o, a, b, + ci); break; case RENAME_VIA_DIR: - clean_merge = 1; - if (handle_rename_via_dir(o, - conflict_info->pair1, - conflict_info->branch1, - conflict_info->branch2)) - clean_merge = -1; + clean_merge = handle_rename_via_dir(opt, ci); + break; + case RENAME_ADD: + /* + * Probably unclean merge, but if the renamed file + * merges cleanly and the result can then be + * two-way merged cleanly with the added file, I + * guess it's a clean merge? + */ + clean_merge = handle_rename_add(opt, ci); break; case RENAME_DELETE: clean_merge = 0; - if (handle_rename_delete(o, - conflict_info->pair1, - conflict_info->branch1, - conflict_info->branch2)) + if (handle_rename_delete(opt, ci)) clean_merge = -1; break; case RENAME_ONE_FILE_TO_TWO: + /* + * Manually fix up paths; note: + * ren[12]->pair->one->path are equal. + */ + o->path = ci->ren1->pair->one->path; + a->path = ci->ren1->pair->two->path; + b->path = ci->ren2->pair->two->path; + clean_merge = 0; - if (handle_rename_rename_1to2(o, conflict_info)) + if (handle_rename_rename_1to2(opt, ci)) clean_merge = -1; break; case RENAME_TWO_FILES_TO_ONE: - clean_merge = 0; - if (handle_rename_rename_2to1(o, conflict_info)) - clean_merge = -1; + /* + * Manually fix up paths; note, + * ren[12]->pair->two->path are actually equal. + */ + o->path = NULL; + a->path = ci->ren1->pair->two->path; + b->path = ci->ren2->pair->two->path; + + /* + * Probably unclean merge, but if the two renamed + * files merge cleanly and the two resulting files + * can then be two-way merged cleanly, I guess it's + * a clean merge? + */ + clean_merge = handle_rename_rename_2to1(opt, ci); break; default: entry->processed = 0; break; } - } else if (o_oid && (!a_oid || !b_oid)) { + if (path_clean < clean_merge) + clean_merge = path_clean; + } else if (o_valid && (!a_valid || !b_valid)) { /* Case A: Deleted in one */ - if ((!a_oid && !b_oid) || - (!b_oid && blob_unchanged(o, o_oid, o_mode, a_oid, a_mode, normalize, path)) || - (!a_oid && blob_unchanged(o, o_oid, o_mode, b_oid, b_mode, normalize, path))) { + if ((!a_valid && !b_valid) || + (!b_valid && blob_unchanged(opt, o, a, normalize, path)) || + (!a_valid && blob_unchanged(opt, o, b, normalize, path))) { /* Deleted in both or deleted in one and * unchanged in the other */ - if (a_oid) - output(o, 2, _("Removing %s"), path); + if (a_valid) + output(opt, 2, _("Removing %s"), path); /* do not touch working file if it did not exist */ - remove_file(o, 1, path, !a_oid); + remove_file(opt, 1, path, !a_valid); } else { /* Modify/delete; deleted side may have put a directory in the way */ clean_merge = 0; - if (handle_modify_delete(o, path, o_oid, o_mode, - a_oid, a_mode, b_oid, b_mode)) + if (handle_modify_delete(opt, path, o, a, b)) clean_merge = -1; } - } else if ((!o_oid && a_oid && !b_oid) || - (!o_oid && !a_oid && b_oid)) { + } else if ((!o_valid && a_valid && !b_valid) || + (!o_valid && !a_valid && b_valid)) { /* Case B: Added in one. */ /* [nothing|directory] -> ([nothing|directory], file) */ const char *add_branch; const char *other_branch; - unsigned mode; - const struct object_id *oid; const char *conf; + const struct diff_filespec *contents; - if (a_oid) { - add_branch = o->branch1; - other_branch = o->branch2; - mode = a_mode; - oid = a_oid; + if (a_valid) { + add_branch = opt->branch1; + other_branch = opt->branch2; + contents = a; conf = _("file/directory"); } else { - add_branch = o->branch2; - other_branch = o->branch1; - mode = b_mode; - oid = b_oid; + add_branch = opt->branch2; + other_branch = opt->branch1; + contents = b; conf = _("directory/file"); } - if (dir_in_way(path, - !o->call_depth && !S_ISGITLINK(a_mode), + if (dir_in_way(opt->repo->index, path, + !opt->priv->call_depth && !S_ISGITLINK(a->mode), 0)) { - char *new_path = unique_path(o, path, add_branch); + char *new_path = unique_path(opt, path, add_branch); clean_merge = 0; - output(o, 1, _("CONFLICT (%s): There is a directory with name %s in %s. " + output(opt, 1, _("CONFLICT (%s): There is a directory with name %s in %s. " "Adding %s as %s"), conf, path, other_branch, path, new_path); - if (update_file(o, 0, oid, mode, new_path)) + if (update_file(opt, 0, contents, new_path)) clean_merge = -1; - else if (o->call_depth) - remove_file_from_cache(path); + else if (opt->priv->call_depth) + remove_file_from_index(opt->repo->index, path); free(new_path); } else { - output(o, 2, _("Adding %s"), path); + output(opt, 2, _("Adding %s"), path); /* do not overwrite file if already present */ - if (update_file_flags(o, oid, mode, path, 1, !a_oid)) + if (update_file_flags(opt, contents, path, 1, !a_valid)) clean_merge = -1; } - } else if (a_oid && b_oid) { - /* Case C: Added in both (check for same permissions) and */ - /* case D: Modified in both, but differently. */ - int is_dirty = 0; /* unpack_trees would have bailed if dirty */ - clean_merge = handle_content_merge(o, path, is_dirty, - o_oid, o_mode, - a_oid, a_mode, - b_oid, b_mode, - NULL); - } else if (!o_oid && !a_oid && !b_oid) { + } else if (a_valid && b_valid) { + if (!o_valid) { + /* Case C: Added in both (check for same permissions) */ + output(opt, 1, + _("CONFLICT (add/add): Merge conflict in %s"), + path); + clean_merge = handle_file_collision(opt, + path, NULL, NULL, + opt->branch1, + opt->branch2, + a, b); + } else { + /* case D: Modified in both, but differently. */ + struct merge_file_info mfi; + int is_dirty = 0; /* unpack_trees would have bailed if dirty */ + clean_merge = handle_content_merge(&mfi, opt, path, + is_dirty, + o, a, b, NULL); + } + } else if (!o_valid && !a_valid && !b_valid) { /* * this entry was deleted altogether. a_mode == 0 means * we had that path and want to actively remove it. */ - remove_file(o, 1, path, !a_mode); + remove_file(opt, 1, path, !a->mode); } else BUG("fatal merge failure, shouldn't happen."); return clean_merge; } -int merge_trees(struct merge_options *o, - struct tree *head, - struct tree *merge, - struct tree *common, - struct tree **result) +static int merge_trees_internal(struct merge_options *opt, + struct tree *head, + struct tree *merge, + struct tree *merge_base, + struct tree **result) { + struct index_state *istate = opt->repo->index; int code, clean; - struct strbuf sb = STRBUF_INIT; - if (!o->call_depth && index_has_changes(&the_index, head, &sb)) { - err(o, _("Your local changes to the following files would be overwritten by merge:\n %s"), - sb.buf); - return -1; + if (opt->subtree_shift) { + merge = shift_tree_object(opt->repo, head, merge, + opt->subtree_shift); + merge_base = shift_tree_object(opt->repo, head, merge_base, + opt->subtree_shift); } - if (o->subtree_shift) { - merge = shift_tree_object(head, merge, o->subtree_shift); - common = shift_tree_object(head, common, o->subtree_shift); - } - - if (oid_eq(&common->object.oid, &merge->object.oid)) { - output(o, 0, _("Already up to date!")); + if (oideq(&merge_base->object.oid, &merge->object.oid)) { + output(opt, 0, _("Already up to date!")); *result = head; return 1; } - code = unpack_trees_start(o, common, head, merge); + code = unpack_trees_start(opt, merge_base, head, merge); if (code != 0) { - if (show(o, 4) || o->call_depth) - err(o, _("merging of trees %s and %s failed"), + if (show(opt, 4) || opt->priv->call_depth) + err(opt, _("merging of trees %s and %s failed"), oid_to_hex(&head->object.oid), oid_to_hex(&merge->object.oid)); - unpack_trees_finish(o); + unpack_trees_finish(opt); return -1; } - if (unmerged_cache()) { + if (unmerged_index(istate)) { struct string_list *entries; struct rename_info re_info; int i; @@ -3335,21 +3495,22 @@ int merge_trees(struct merge_options *o, * opposed to decaring a local hashmap is for convenience * so that we don't have to pass it to around. */ - hashmap_init(&o->current_file_dir_set, path_hashmap_cmp, NULL, 512); - get_files_dirs(o, head); - get_files_dirs(o, merge); + hashmap_init(&opt->priv->current_file_dir_set, path_hashmap_cmp, + NULL, 512); + get_files_dirs(opt, head); + get_files_dirs(opt, merge); - entries = get_unmerged(); - clean = detect_and_process_renames(o, common, head, merge, + entries = get_unmerged(opt->repo->index); + clean = detect_and_process_renames(opt, merge_base, head, merge, entries, &re_info); - record_df_conflict_files(o, entries); + record_df_conflict_files(opt, entries); if (clean < 0) goto cleanup; for (i = entries->nr-1; 0 <= i; i--) { const char *path = entries->items[i].string; struct stage_data *e = entries->items[i].util; if (!e->processed) { - int ret = process_entry(o, path, e); + int ret = process_entry(opt, path, e); if (!ret) clean = 0; else if (ret < 0) { @@ -3371,19 +3532,21 @@ int merge_trees(struct merge_options *o, string_list_clear(entries, 1); free(entries); - hashmap_free(&o->current_file_dir_set, 1); + hashmap_free_entries(&opt->priv->current_file_dir_set, + struct path_hashmap_entry, e); if (clean < 0) { - unpack_trees_finish(o); + unpack_trees_finish(opt); return clean; } } else clean = 1; - unpack_trees_finish(o); + unpack_trees_finish(opt); - if (o->call_depth && !(*result = write_tree_from_memory(o))) + if (opt->priv->call_depth && + !(*result = write_in_core_index_as_tree(opt->repo))) return -1; return clean; @@ -3404,49 +3567,62 @@ static struct commit_list *reverse_commit_list(struct commit_list *list) * Merge the commits h1 and h2, return the resulting virtual * commit object and a flag indicating the cleanness of the merge. */ -int merge_recursive(struct merge_options *o, - struct commit *h1, - struct commit *h2, - struct commit_list *ca, - struct commit **result) +static int merge_recursive_internal(struct merge_options *opt, + struct commit *h1, + struct commit *h2, + struct commit_list *merge_bases, + struct commit **result) { struct commit_list *iter; - struct commit *merged_common_ancestors; - struct tree *mrtree; + struct commit *merged_merge_bases; + struct tree *result_tree; int clean; + const char *ancestor_name; + struct strbuf merge_base_abbrev = STRBUF_INIT; - if (show(o, 4)) { - output(o, 4, _("Merging:")); - output_commit_title(o, h1); - output_commit_title(o, h2); + if (show(opt, 4)) { + output(opt, 4, _("Merging:")); + output_commit_title(opt, h1); + output_commit_title(opt, h2); } - if (!ca) { - ca = get_merge_bases(h1, h2); - ca = reverse_commit_list(ca); + if (!merge_bases) { + merge_bases = get_merge_bases(h1, h2); + merge_bases = reverse_commit_list(merge_bases); } - if (show(o, 5)) { - unsigned cnt = commit_list_count(ca); + if (show(opt, 5)) { + unsigned cnt = commit_list_count(merge_bases); - output(o, 5, Q_("found %u common ancestor:", + output(opt, 5, Q_("found %u common ancestor:", "found %u common ancestors:", cnt), cnt); - for (iter = ca; iter; iter = iter->next) - output_commit_title(o, iter->item); + for (iter = merge_bases; iter; iter = iter->next) + output_commit_title(opt, iter->item); } - merged_common_ancestors = pop_commit(&ca); - if (merged_common_ancestors == NULL) { + merged_merge_bases = pop_commit(&merge_bases); + if (merged_merge_bases == NULL) { /* if there is no common ancestor, use an empty tree */ struct tree *tree; - tree = lookup_tree(the_repository, the_repository->hash_algo->empty_tree); - merged_common_ancestors = make_virtual_commit(tree, "ancestor"); + tree = lookup_tree(opt->repo, opt->repo->hash_algo->empty_tree); + merged_merge_bases = make_virtual_commit(opt->repo, tree, + "ancestor"); + ancestor_name = "empty tree"; + } else if (opt->ancestor && !opt->priv->call_depth) { + ancestor_name = opt->ancestor; + } else if (merge_bases) { + ancestor_name = "merged common ancestors"; + } else { + strbuf_add_unique_abbrev(&merge_base_abbrev, + &merged_merge_bases->object.oid, + DEFAULT_ABBREV); + ancestor_name = merge_base_abbrev.buf; } - for (iter = ca; iter; iter = iter->next) { + for (iter = merge_bases; iter; iter = iter->next) { const char *saved_b1, *saved_b2; - o->call_depth++; + opt->priv->call_depth++; /* * When the merge fails, the result contains files * with conflict markers. The cleanness flag is @@ -3455,60 +3631,149 @@ int merge_recursive(struct merge_options *o, * overwritten it: the committed "conflicts" were * already resolved. */ - discard_cache(); - saved_b1 = o->branch1; - saved_b2 = o->branch2; - o->branch1 = "Temporary merge branch 1"; - o->branch2 = "Temporary merge branch 2"; - if (merge_recursive(o, merged_common_ancestors, iter->item, - NULL, &merged_common_ancestors) < 0) + discard_index(opt->repo->index); + saved_b1 = opt->branch1; + saved_b2 = opt->branch2; + opt->branch1 = "Temporary merge branch 1"; + opt->branch2 = "Temporary merge branch 2"; + if (merge_recursive_internal(opt, merged_merge_bases, iter->item, + NULL, &merged_merge_bases) < 0) return -1; - o->branch1 = saved_b1; - o->branch2 = saved_b2; - o->call_depth--; - - if (!merged_common_ancestors) - return err(o, _("merge returned no commit")); - } - - discard_cache(); - if (!o->call_depth) - read_cache(); - - o->ancestor = "merged common ancestors"; - clean = merge_trees(o, get_commit_tree(h1), get_commit_tree(h2), - get_commit_tree(merged_common_ancestors), - &mrtree); + opt->branch1 = saved_b1; + opt->branch2 = saved_b2; + opt->priv->call_depth--; + + if (!merged_merge_bases) + return err(opt, _("merge returned no commit")); + } + + discard_index(opt->repo->index); + if (!opt->priv->call_depth) + repo_read_index(opt->repo); + + opt->ancestor = ancestor_name; + clean = merge_trees_internal(opt, + repo_get_commit_tree(opt->repo, h1), + repo_get_commit_tree(opt->repo, h2), + repo_get_commit_tree(opt->repo, + merged_merge_bases), + &result_tree); + strbuf_release(&merge_base_abbrev); + opt->ancestor = NULL; /* avoid accidental re-use of opt->ancestor */ if (clean < 0) { - flush_output(o); + flush_output(opt); return clean; } - if (o->call_depth) { - *result = make_virtual_commit(mrtree, "merged tree"); + if (opt->priv->call_depth) { + *result = make_virtual_commit(opt->repo, result_tree, + "merged tree"); commit_list_insert(h1, &(*result)->parents); commit_list_insert(h2, &(*result)->parents->next); } - flush_output(o); - if (!o->call_depth && o->buffer_output < 2) - strbuf_release(&o->obuf); - if (show(o, 2)) + return clean; +} + +static int merge_start(struct merge_options *opt, struct tree *head) +{ + struct strbuf sb = STRBUF_INIT; + + /* Sanity checks on opt */ + assert(opt->repo); + + assert(opt->branch1 && opt->branch2); + + assert(opt->detect_renames >= -1 && + opt->detect_renames <= DIFF_DETECT_COPY); + assert(opt->detect_directory_renames >= MERGE_DIRECTORY_RENAMES_NONE && + opt->detect_directory_renames <= MERGE_DIRECTORY_RENAMES_TRUE); + assert(opt->rename_limit >= -1); + assert(opt->rename_score >= 0 && opt->rename_score <= MAX_SCORE); + assert(opt->show_rename_progress >= 0 && opt->show_rename_progress <= 1); + + assert(opt->xdl_opts >= 0); + assert(opt->recursive_variant >= MERGE_VARIANT_NORMAL && + opt->recursive_variant <= MERGE_VARIANT_THEIRS); + + assert(opt->verbosity >= 0 && opt->verbosity <= 5); + assert(opt->buffer_output <= 2); + assert(opt->obuf.len == 0); + + assert(opt->priv == NULL); + + /* Sanity check on repo state; index must match head */ + if (repo_index_has_changes(opt->repo, head, &sb)) { + err(opt, _("Your local changes to the following files would be overwritten by merge:\n %s"), + sb.buf); + strbuf_release(&sb); + return -1; + } + + opt->priv = xcalloc(1, sizeof(*opt->priv)); + string_list_init(&opt->priv->df_conflict_file_set, 1); + return 0; +} + +static void merge_finalize(struct merge_options *opt) +{ + flush_output(opt); + if (!opt->priv->call_depth && opt->buffer_output < 2) + strbuf_release(&opt->obuf); + if (show(opt, 2)) diff_warn_rename_limit("merge.renamelimit", - o->needed_rename_limit, 0); + opt->priv->needed_rename_limit, 0); + FREE_AND_NULL(opt->priv); +} + +int merge_trees(struct merge_options *opt, + struct tree *head, + struct tree *merge, + struct tree *merge_base) +{ + int clean; + struct tree *ignored; + + assert(opt->ancestor != NULL); + + if (merge_start(opt, head)) + return -1; + clean = merge_trees_internal(opt, head, merge, merge_base, &ignored); + merge_finalize(opt); + + return clean; +} + +int merge_recursive(struct merge_options *opt, + struct commit *h1, + struct commit *h2, + struct commit_list *merge_bases, + struct commit **result) +{ + int clean; + + assert(opt->ancestor == NULL || + !strcmp(opt->ancestor, "constructed merge base")); + + if (merge_start(opt, repo_get_commit_tree(opt->repo, h1))) + return -1; + clean = merge_recursive_internal(opt, h1, h2, merge_bases, result); + merge_finalize(opt); + return clean; } -static struct commit *get_ref(const struct object_id *oid, const char *name) +static struct commit *get_ref(struct repository *repo, + const struct object_id *oid, + const char *name) { struct object *object; - object = deref_tag(the_repository, parse_object(the_repository, oid), - name, - strlen(name)); + object = deref_tag(repo, parse_object(repo, oid), + name, strlen(name)); if (!object) return NULL; if (object->type == OBJ_TREE) - return make_virtual_commit((struct tree*)object, name); + return make_virtual_commit(repo, (struct tree*)object, name); if (object->type != OBJ_COMMIT) return NULL; if (parse_commit((struct commit *)object)) @@ -3516,135 +3781,158 @@ static struct commit *get_ref(const struct object_id *oid, const char *name) return (struct commit *)object; } -int merge_recursive_generic(struct merge_options *o, +int merge_recursive_generic(struct merge_options *opt, const struct object_id *head, const struct object_id *merge, - int num_base_list, - const struct object_id **base_list, + int num_merge_bases, + const struct object_id **merge_bases, struct commit **result) { int clean; struct lock_file lock = LOCK_INIT; - struct commit *head_commit = get_ref(head, o->branch1); - struct commit *next_commit = get_ref(merge, o->branch2); + struct commit *head_commit = get_ref(opt->repo, head, opt->branch1); + struct commit *next_commit = get_ref(opt->repo, merge, opt->branch2); struct commit_list *ca = NULL; - if (base_list) { + if (merge_bases) { int i; - for (i = 0; i < num_base_list; ++i) { + for (i = 0; i < num_merge_bases; ++i) { struct commit *base; - if (!(base = get_ref(base_list[i], oid_to_hex(base_list[i])))) - return err(o, _("Could not parse object '%s'"), - oid_to_hex(base_list[i])); + if (!(base = get_ref(opt->repo, merge_bases[i], + oid_to_hex(merge_bases[i])))) + return err(opt, _("Could not parse object '%s'"), + oid_to_hex(merge_bases[i])); commit_list_insert(base, &ca); } + if (num_merge_bases == 1) + opt->ancestor = "constructed merge base"; } - hold_locked_index(&lock, LOCK_DIE_ON_ERROR); - clean = merge_recursive(o, head_commit, next_commit, ca, + repo_hold_locked_index(opt->repo, &lock, LOCK_DIE_ON_ERROR); + clean = merge_recursive(opt, head_commit, next_commit, ca, result); if (clean < 0) { rollback_lock_file(&lock); return clean; } - if (write_locked_index(&the_index, &lock, + if (write_locked_index(opt->repo->index, &lock, COMMIT_LOCK | SKIP_IF_UNCHANGED)) - return err(o, _("Unable to write index.")); + return err(opt, _("Unable to write index.")); return clean ? 0 : 1; } -static void merge_recursive_config(struct merge_options *o) +static void merge_recursive_config(struct merge_options *opt) { char *value = NULL; - git_config_get_int("merge.verbosity", &o->verbosity); - git_config_get_int("diff.renamelimit", &o->diff_rename_limit); - git_config_get_int("merge.renamelimit", &o->merge_rename_limit); + git_config_get_int("merge.verbosity", &opt->verbosity); + git_config_get_int("diff.renamelimit", &opt->rename_limit); + git_config_get_int("merge.renamelimit", &opt->rename_limit); if (!git_config_get_string("diff.renames", &value)) { - o->diff_detect_rename = git_config_rename("diff.renames", value); + opt->detect_renames = git_config_rename("diff.renames", value); free(value); } if (!git_config_get_string("merge.renames", &value)) { - o->merge_detect_rename = git_config_rename("merge.renames", value); + opt->detect_renames = git_config_rename("merge.renames", value); + free(value); + } + if (!git_config_get_string("merge.directoryrenames", &value)) { + int boolval = git_parse_maybe_bool(value); + if (0 <= boolval) { + opt->detect_directory_renames = boolval ? + MERGE_DIRECTORY_RENAMES_TRUE : + MERGE_DIRECTORY_RENAMES_NONE; + } else if (!strcasecmp(value, "conflict")) { + opt->detect_directory_renames = + MERGE_DIRECTORY_RENAMES_CONFLICT; + } /* avoid erroring on values from future versions of git */ free(value); } git_config(git_xmerge_config, NULL); } -void init_merge_options(struct merge_options *o) +void init_merge_options(struct merge_options *opt, + struct repository *repo) { const char *merge_verbosity; - memset(o, 0, sizeof(struct merge_options)); - o->verbosity = 2; - o->buffer_output = 1; - o->diff_rename_limit = -1; - o->merge_rename_limit = -1; - o->renormalize = 0; - o->diff_detect_rename = -1; - o->merge_detect_rename = -1; - o->detect_directory_renames = 1; - merge_recursive_config(o); + memset(opt, 0, sizeof(struct merge_options)); + + opt->repo = repo; + + opt->detect_renames = -1; + opt->detect_directory_renames = MERGE_DIRECTORY_RENAMES_CONFLICT; + opt->rename_limit = -1; + + opt->verbosity = 2; + opt->buffer_output = 1; + strbuf_init(&opt->obuf, 0); + + opt->renormalize = 0; + + merge_recursive_config(opt); merge_verbosity = getenv("GIT_MERGE_VERBOSITY"); if (merge_verbosity) - o->verbosity = strtol(merge_verbosity, NULL, 10); - if (o->verbosity >= 5) - o->buffer_output = 0; - strbuf_init(&o->obuf, 0); - string_list_init(&o->df_conflict_file_set, 1); + opt->verbosity = strtol(merge_verbosity, NULL, 10); + if (opt->verbosity >= 5) + opt->buffer_output = 0; } -int parse_merge_opt(struct merge_options *o, const char *s) +int parse_merge_opt(struct merge_options *opt, const char *s) { const char *arg; if (!s || !*s) return -1; if (!strcmp(s, "ours")) - o->recursive_variant = MERGE_RECURSIVE_OURS; + opt->recursive_variant = MERGE_VARIANT_OURS; else if (!strcmp(s, "theirs")) - o->recursive_variant = MERGE_RECURSIVE_THEIRS; + opt->recursive_variant = MERGE_VARIANT_THEIRS; else if (!strcmp(s, "subtree")) - o->subtree_shift = ""; + opt->subtree_shift = ""; else if (skip_prefix(s, "subtree=", &arg)) - o->subtree_shift = arg; + opt->subtree_shift = arg; else if (!strcmp(s, "patience")) - o->xdl_opts = DIFF_WITH_ALG(o, PATIENCE_DIFF); + opt->xdl_opts = DIFF_WITH_ALG(opt, PATIENCE_DIFF); else if (!strcmp(s, "histogram")) - o->xdl_opts = DIFF_WITH_ALG(o, HISTOGRAM_DIFF); + opt->xdl_opts = DIFF_WITH_ALG(opt, HISTOGRAM_DIFF); else if (skip_prefix(s, "diff-algorithm=", &arg)) { long value = parse_algorithm_value(arg); if (value < 0) return -1; /* clear out previous settings */ - DIFF_XDL_CLR(o, NEED_MINIMAL); - o->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; - o->xdl_opts |= value; + DIFF_XDL_CLR(opt, NEED_MINIMAL); + opt->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; + opt->xdl_opts |= value; } else if (!strcmp(s, "ignore-space-change")) - DIFF_XDL_SET(o, IGNORE_WHITESPACE_CHANGE); + DIFF_XDL_SET(opt, IGNORE_WHITESPACE_CHANGE); else if (!strcmp(s, "ignore-all-space")) - DIFF_XDL_SET(o, IGNORE_WHITESPACE); + DIFF_XDL_SET(opt, IGNORE_WHITESPACE); else if (!strcmp(s, "ignore-space-at-eol")) - DIFF_XDL_SET(o, IGNORE_WHITESPACE_AT_EOL); + DIFF_XDL_SET(opt, IGNORE_WHITESPACE_AT_EOL); else if (!strcmp(s, "ignore-cr-at-eol")) - DIFF_XDL_SET(o, IGNORE_CR_AT_EOL); + DIFF_XDL_SET(opt, IGNORE_CR_AT_EOL); else if (!strcmp(s, "renormalize")) - o->renormalize = 1; + opt->renormalize = 1; else if (!strcmp(s, "no-renormalize")) - o->renormalize = 0; + opt->renormalize = 0; else if (!strcmp(s, "no-renames")) - o->merge_detect_rename = 0; + opt->detect_renames = 0; else if (!strcmp(s, "find-renames")) { - o->merge_detect_rename = 1; - o->rename_score = 0; + opt->detect_renames = 1; + opt->rename_score = 0; } else if (skip_prefix(s, "find-renames=", &arg) || skip_prefix(s, "rename-threshold=", &arg)) { - if ((o->rename_score = parse_rename_score(&arg)) == -1 || *arg != 0) + if ((opt->rename_score = parse_rename_score(&arg)) == -1 || *arg != 0) return -1; - o->merge_detect_rename = 1; + opt->detect_renames = 1; } + /* + * Please update $__git_merge_strategy_options in + * git-completion.bash when you add new options + */ else return -1; return 0; |