diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/submodule.c b/submodule.c new file mode 100644 index 0000000000..d5fce7a882 --- /dev/null +++ b/submodule.c @@ -0,0 +1,113 @@ +#include "cache.h" +#include "submodule.h" +#include "dir.h" +#include "diff.h" +#include "commit.h" +#include "revision.h" + +int add_submodule_odb(const char *path) +{ + struct strbuf objects_directory = STRBUF_INIT; + struct alternate_object_database *alt_odb; + + strbuf_addf(&objects_directory, "%s/.git/objects/", path); + if (!is_directory(objects_directory.buf)) + return -1; + + /* avoid adding it twice */ + for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next) + if (alt_odb->name - alt_odb->base == objects_directory.len && + !strncmp(alt_odb->base, objects_directory.buf, + objects_directory.len)) + return 0; + + alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb)); + alt_odb->next = alt_odb_list; + strcpy(alt_odb->base, objects_directory.buf); + alt_odb->name = alt_odb->base + objects_directory.len; + alt_odb->name[2] = '/'; + alt_odb->name[40] = '\0'; + alt_odb->name[41] = '\0'; + alt_odb_list = alt_odb; + prepare_alt_odb(); + return 0; +} + +void show_submodule_summary(FILE *f, const char *path, + unsigned char one[20], unsigned char two[20], + const char *del, const char *add, const char *reset) +{ + struct rev_info rev; + struct commit *commit, *left = left, *right; + struct commit_list *merge_bases, *list; + const char *message = NULL; + struct strbuf sb = STRBUF_INIT; + static const char *format = " %m %s"; + int fast_forward = 0, fast_backward = 0; + + if (is_null_sha1(two)) + message = "(submodule deleted)"; + else if (add_submodule_odb(path)) + message = "(not checked out)"; + else if (is_null_sha1(one)) + message = "(new submodule)"; + else if (!(left = lookup_commit_reference(one)) || + !(right = lookup_commit_reference(two))) + message = "(commits not present)"; + + if (!message) { + init_revisions(&rev, NULL); + setup_revisions(0, NULL, &rev, NULL); + rev.left_right = 1; + rev.first_parent_only = 1; + left->object.flags |= SYMMETRIC_LEFT; + add_pending_object(&rev, &left->object, path); + add_pending_object(&rev, &right->object, path); + merge_bases = get_merge_bases(left, right, 1); + if (merge_bases) { + if (merge_bases->item == left) + fast_forward = 1; + else if (merge_bases->item == right) + fast_backward = 1; + } + for (list = merge_bases; list; list = list->next) { + list->item->object.flags |= UNINTERESTING; + add_pending_object(&rev, &list->item->object, + sha1_to_hex(list->item->object.sha1)); + } + if (prepare_revision_walk(&rev)) + message = "(revision walker failed)"; + } + + strbuf_addf(&sb, "Submodule %s %s..", path, + find_unique_abbrev(one, DEFAULT_ABBREV)); + if (!fast_backward && !fast_forward) + strbuf_addch(&sb, '.'); + strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV)); + if (message) + strbuf_addf(&sb, " %s\n", message); + else + strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); + fwrite(sb.buf, sb.len, 1, f); + + if (!message) { + while ((commit = get_revision(&rev))) { + strbuf_setlen(&sb, 0); + if (commit->object.flags & SYMMETRIC_LEFT) { + if (del) + strbuf_addstr(&sb, del); + } + else if (add) + strbuf_addstr(&sb, add); + format_commit_message(commit, format, &sb, + rev.date_mode); + if (reset) + strbuf_addstr(&sb, reset); + strbuf_addch(&sb, '\n'); + fprintf(f, "%s", sb.buf); + } + clear_commit_marks(left, ~0); + clear_commit_marks(right, ~0); + } + strbuf_release(&sb); +} |