diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/submodule.c b/submodule.c new file mode 100644 index 0000000..61cb6e2 --- /dev/null +++ b/submodule.c @@ -0,0 +1,220 @@ +#include "cache.h" +#include "submodule.h" +#include "dir.h" +#include "diff.h" +#include "commit.h" +#include "revision.h" +#include "run-command.h" +#include "diffcore.h" + +static int add_submodule_odb(const char *path) +{ + struct strbuf objects_directory = STRBUF_INIT; + struct alternate_object_database *alt_odb; + int ret = 0; + const char *git_dir; + + strbuf_addf(&objects_directory, "%s/.git", path); + git_dir = read_gitfile_gently(objects_directory.buf); + if (git_dir) { + strbuf_reset(&objects_directory); + strbuf_addstr(&objects_directory, git_dir); + } + strbuf_addstr(&objects_directory, "/objects/"); + if (!is_directory(objects_directory.buf)) { + ret = -1; + goto done; + } + /* 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)) + goto done; + + 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(); +done: + strbuf_release(&objects_directory); + return ret; +} + +void handle_ignore_submodules_arg(struct diff_options *diffopt, + const char *arg) +{ + if (!strcmp(arg, "all")) + DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES); + else if (!strcmp(arg, "untracked")) + DIFF_OPT_SET(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES); + else if (!strcmp(arg, "dirty")) + DIFF_OPT_SET(diffopt, IGNORE_DIRTY_SUBMODULES); + else + die("bad --ignore-submodules argument: %s", arg); +} + +void show_submodule_summary(FILE *f, const char *path, + unsigned char one[20], unsigned char two[20], + unsigned dirty_submodule, + const char *del, const char *add, const char *reset) +{ + struct rev_info rev; + struct commit *commit, *left = left, *right = 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)"; + } + + if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) + fprintf(f, "Submodule %s contains untracked content\n", path); + if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) + fprintf(f, "Submodule %s contains modified content\n", path); + + if (!hashcmp(one, two)) { + strbuf_release(&sb); + return; + } + + 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))) { + struct pretty_print_context ctx = {0}; + ctx.date_mode = rev.date_mode; + 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, &ctx); + 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); +} + +unsigned is_submodule_modified(const char *path, int ignore_untracked) +{ + ssize_t len; + struct child_process cp; + const char *argv[] = { + "status", + "--porcelain", + NULL, + NULL, + }; + struct strbuf buf = STRBUF_INIT; + unsigned dirty_submodule = 0; + const char *line, *next_line; + const char *git_dir; + + strbuf_addf(&buf, "%s/.git", path); + git_dir = read_gitfile_gently(buf.buf); + if (!git_dir) + git_dir = buf.buf; + if (!is_directory(git_dir)) { + strbuf_release(&buf); + /* The submodule is not checked out, so it is not modified */ + return 0; + + } + strbuf_reset(&buf); + + if (ignore_untracked) + argv[2] = "-uno"; + + memset(&cp, 0, sizeof(cp)); + cp.argv = argv; + cp.env = local_repo_env; + cp.git_cmd = 1; + cp.no_stdin = 1; + cp.out = -1; + cp.dir = path; + if (start_command(&cp)) + die("Could not run git status --porcelain"); + + len = strbuf_read(&buf, cp.out, 1024); + line = buf.buf; + while (len > 2) { + if ((line[0] == '?') && (line[1] == '?')) { + dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; + if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) + break; + } else { + dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; + if (ignore_untracked || + (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)) + break; + } + next_line = strchr(line, '\n'); + if (!next_line) + break; + next_line++; + len -= (next_line - line); + line = next_line; + } + close(cp.out); + + if (finish_command(&cp)) + die("git status --porcelain failed"); + + strbuf_release(&buf); + return dirty_submodule; +} |