diff options
Diffstat (limited to 'builtin-merge.c')
-rw-r--r-- | builtin-merge.c | 99 |
1 files changed, 80 insertions, 19 deletions
diff --git a/builtin-merge.c b/builtin-merge.c index 921453949a..3aaec7bed7 100644 --- a/builtin-merge.c +++ b/builtin-merge.c @@ -24,6 +24,7 @@ #include "rerere.h" #include "help.h" #include "merge-recursive.h" +#include "resolve-undo.h" #define DEFAULT_TWOHEAD (1<<0) #define DEFAULT_OCTOPUS (1<<1) @@ -43,14 +44,18 @@ static const char * const builtin_merge_usage[] = { static int show_diffstat = 1, option_log, squash; static int option_commit = 1, allow_fast_forward = 1; +static int fast_forward_only; static int allow_trivial = 1, have_message; static struct strbuf merge_msg; static struct commit_list *remoteheads; static unsigned char head[20], stash[20]; static struct strategy **use_strategies; static size_t use_strategies_nr, use_strategies_alloc; +static const char **xopts; +static size_t xopts_nr, xopts_alloc; static const char *branch; static int verbosity; +static int allow_rerere_auto; static struct strategy all_strategy[] = { { "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL }, @@ -145,6 +150,17 @@ static int option_parse_strategy(const struct option *opt, return 0; } +static int option_parse_x(const struct option *opt, + const char *arg, int unset) +{ + if (unset) + return 0; + + ALLOC_GROW(xopts, xopts_nr + 1, xopts_alloc); + xopts[xopts_nr++] = xstrdup(arg); + return 0; +} + static int option_parse_n(const struct option *opt, const char *arg, int unset) { @@ -166,9 +182,14 @@ static struct option builtin_merge_options[] = { OPT_BOOLEAN(0, "commit", &option_commit, "perform a commit if the merge succeeds (default)"), OPT_BOOLEAN(0, "ff", &allow_fast_forward, - "allow fast forward (default)"), + "allow fast-forward (default)"), + OPT_BOOLEAN(0, "ff-only", &fast_forward_only, + "abort if fast-forward is not possible"), + OPT_RERERE_AUTOUPDATE(&allow_rerere_auto), OPT_CALLBACK('s', "strategy", &use_strategies, "strategy", "merge strategy to use", option_parse_strategy), + OPT_CALLBACK('X', "strategy-option", &xopts, "option=value", + "option for selected merge strategy", option_parse_x), OPT_CALLBACK('m', "message", &merge_msg, "message", "message to be used for the merge commit (if any)", option_parse_message), @@ -264,6 +285,7 @@ static void squash_message(void) struct strbuf out = STRBUF_INIT; struct commit_list *j; int fd; + struct pretty_print_context ctx = {0}; printf("Squash commit -- not updating HEAD\n"); fd = open(git_path("SQUASH_MSG"), O_WRONLY | O_CREAT, 0666); @@ -285,13 +307,15 @@ static void squash_message(void) if (prepare_revision_walk(&rev)) die("revision walk setup failed"); + ctx.abbrev = rev.abbrev; + ctx.date_mode = rev.date_mode; + strbuf_addstr(&out, "Squashed commit of the following:\n"); while ((commit = get_revision(&rev)) != NULL) { strbuf_addch(&out, '\n'); strbuf_addf(&out, "commit %s\n", sha1_to_hex(commit->object.sha1)); - pretty_print_commit(rev.commit_format, commit, &out, rev.abbrev, - NULL, NULL, rev.date_mode, 0); + pretty_print_commit(rev.commit_format, commit, &out, &ctx); } if (write(fd, out.buf, out.len) < 0) die_errno("Writing SQUASH_MSG"); @@ -528,7 +552,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, const char *head_arg) { const char **args; - int i = 0, ret; + int i = 0, x = 0, ret; struct commit_list *j; struct strbuf buf = STRBUF_INIT; int index_fd; @@ -557,7 +581,20 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, init_merge_options(&o); if (!strcmp(strategy, "subtree")) - o.subtree_merge = 1; + o.subtree_shift = ""; + + for (x = 0; x < xopts_nr; x++) { + if (!strcmp(xopts[x], "ours")) + o.recursive_variant = MERGE_RECURSIVE_OURS; + else if (!strcmp(xopts[x], "theirs")) + o.recursive_variant = MERGE_RECURSIVE_THEIRS; + else if (!strcmp(xopts[x], "subtree")) + o.subtree_shift = ""; + else if (!prefixcmp(xopts[x], "subtree=")) + o.subtree_shift = xopts[x]+8; + else + die("Unknown option for merge-recursive: -X%s", xopts[x]); + } o.branch1 = head_arg; o.branch2 = remoteheads->item->util; @@ -575,10 +612,16 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, rollback_lock_file(lock); return clean ? 0 : 1; } else { - args = xmalloc((4 + commit_list_count(common) + + args = xmalloc((4 + xopts_nr + commit_list_count(common) + commit_list_count(remoteheads)) * sizeof(char *)); strbuf_addf(&buf, "merge-%s", strategy); args[i++] = buf.buf; + for (x = 0; x < xopts_nr; x++) { + char *s = xmalloc(strlen(xopts[x])+2+1); + strcpy(s, "--"); + strcpy(s+2, xopts[x]); + args[i++] = s; + } for (j = common; j; j = j->next) args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1)); args[i++] = "--"; @@ -589,6 +632,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, ret = run_command_v_opt(args, RUN_GIT_CMD); strbuf_release(&buf); i = 1; + for (x = 0; x < xopts_nr; x++) + free((void *)args[i++]); for (j = common; j; j = j->next) free((void *)args[i++]); i += 2; @@ -598,6 +643,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, discard_cache(); if (read_cache() < 0) die("failed to read the cache"); + resolve_undo_clear(); return ret; } } @@ -612,11 +658,10 @@ static void count_diff_files(struct diff_queue_struct *q, static int count_unmerged_entries(void) { - const struct index_state *state = &the_index; int i, ret = 0; - for (i = 0; i < state->cache_nr; i++) - if (ce_stage(state->cache[i])) + for (i = 0; i < active_nr; i++) + if (ce_stage(active_cache[i])) ret++; return ret; @@ -784,7 +829,7 @@ static int suggest_conflicts(void) } } fclose(fp); - rerere(); + rerere(allow_rerere_auto); printf("Automatic merge failed; " "fix conflicts and then commit the result.\n"); return 1; @@ -841,12 +886,22 @@ int cmd_merge(int argc, const char **argv, const char *prefix) const char *best_strategy = NULL, *wt_strategy = NULL; struct commit_list **remotes = &remoteheads; - if (file_exists(git_path("MERGE_HEAD"))) - die("You have not concluded your merge. (MERGE_HEAD exists)"); - if (read_cache_unmerged()) - die("You are in the middle of a conflicted merge." - " (index unmerged)"); + if (read_cache_unmerged()) { + die_resolve_conflict("merge"); + } + if (file_exists(git_path("MERGE_HEAD"))) { + /* + * There is no unmerged entry, don't advise 'git + * add/rm <file>', just 'git commit'. + */ + if (advice_resolve_conflict) + die("You have not concluded your merge (MERGE_HEAD exists).\n" + "Please, commit your changes before you can merge."); + else + die("You have not concluded your merge (MERGE_HEAD exists)."); + } + resolve_undo_clear(); /* * Check if we are _not_ on a detached HEAD, i.e. if there is a * current branch. @@ -874,6 +929,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix) option_commit = 0; } + if (!allow_fast_forward && fast_forward_only) + die("You cannot combine --no-ff with --ff-only."); + if (!argc) usage_with_options(builtin_merge_usage, builtin_merge_options); @@ -1015,7 +1073,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) hex, find_unique_abbrev(remoteheads->item->object.sha1, DEFAULT_ABBREV)); - strbuf_addstr(&msg, "Fast forward"); + strbuf_addstr(&msg, "Fast-forward"); if (have_message) strbuf_addstr(&msg, " (no commit created; -m option ignored)"); @@ -1033,16 +1091,16 @@ int cmd_merge(int argc, const char **argv, const char *prefix) } else if (!remoteheads->next && common->next) ; /* - * We are not doing octopus and not fast forward. Need + * We are not doing octopus and not fast-forward. Need * a real merge. */ else if (!remoteheads->next && !common->next && option_commit) { /* - * We are not doing octopus, not fast forward, and have + * We are not doing octopus, not fast-forward, and have * only one common. */ refresh_cache(REFRESH_QUIET); - if (allow_trivial) { + if (allow_trivial && !fast_forward_only) { /* See if it is really trivial. */ git_committer_info(IDENT_ERROR_ON_NO_NAME); printf("Trying really trivial in-index merge...\n"); @@ -1081,6 +1139,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix) } } + if (fast_forward_only) + die("Not possible to fast-forward, aborting."); + /* We are going to make a new commit. */ git_committer_info(IDENT_ERROR_ON_NO_NAME); |