| /* |
| * libgit2 "last-changed" example - get last commit modifying a file |
| * |
| * Written by the libgit2 contributors |
| * |
| * To the extent possible under law, the author(s) have dedicated all copyright |
| * and related and neighboring rights to this software to the public domain |
| * worldwide. This software is distributed without any warranty. |
| * |
| * You should have received a copy of the CC0 Public Domain Dedication along |
| * with this software. If not, see |
| * <http://creativecommons.org/publicdomain/zero/1.0/>. |
| */ |
| |
| #include "common.h" |
| |
| static void usage(void) |
| { |
| fprintf(stderr, "usage: last-changed [--git-dir=DIR] pathname ...\n"); |
| exit(1); |
| } |
| |
| static int mark_pathspec_match( |
| const git_diff *, const git_diff_delta *, const char *, void *); |
| |
| typedef struct { |
| git_diff_options opts; |
| git_oid oid; |
| char str[GIT_OID_HEXSZ + 1]; |
| } change_info; |
| |
| int main(int argc, char *argv[]) |
| { |
| const char *repodir = "."; |
| change_info info = { GIT_DIFF_OPTIONS_INIT }; |
| int start_pathspec = 1; |
| size_t i; |
| git_repository *repo; |
| git_revwalk *walker; |
| |
| git_threads_init(); |
| |
| /* allow you to specific a git repo other than the current one */ |
| if (argc > 1 && !strncmp(argv[1], "--git-dir=", strlen("--git-dir="))) { |
| repodir = argv[1] + strlen("--git-dir="); |
| start_pathspec++; |
| } |
| |
| /* convert arguments to a "pathspec" of interesting files */ |
| info.opts.pathspec.strings = &argv[start_pathspec]; |
| info.opts.pathspec.count = argc - start_pathspec; |
| if (!info.opts.pathspec.count) |
| usage(); |
| info.opts.ignore_submodules = GIT_SUBMODULE_IGNORE_DIRTY | |
| GIT_DIFF_DISABLE_PATHSPEC_MATCH; |
| info.opts.notify_cb = mark_pathspec_match; |
| info.opts.notify_payload = &info; |
| |
| /* create repo and walker */ |
| check_lg2(git_repository_open_ext(&repo, repodir, 0, NULL), |
| "Could not open repository", repodir); |
| check_lg2(git_revwalk_new(&walker, repo), |
| "Could not create revision walker", NULL); |
| |
| /* start at HEAD and walk backwards through time */ |
| git_revwalk_sorting(walker, GIT_SORT_TOPOLOGICAL | GIT_SORT_TIME); |
| check_lg2(git_revwalk_push_head(walker), |
| "Could not find repository HEAD", NULL); |
| |
| while (info.opts.pathspec.count > 0 && |
| !git_revwalk_next(&info.oid, walker)) |
| { |
| git_commit *commit; |
| git_diff *diff; |
| |
| git_oid_tostr(info.str, sizeof(info.str), &info.oid); |
| |
| check_lg2(git_commit_lookup(&commit, repo, &info.oid), |
| "Failed to look up commit", NULL); |
| check_lg2(git_diff_commit(&diff, commit, &info.opts), |
| "Failed to get diff for commit", NULL); |
| |
| /* notification callback will take care of reporting on |
| * items in the diff and reducing the pathspec count |
| */ |
| |
| git_diff_free(diff); |
| git_commit_free(commit); |
| } |
| |
| for (i = 0; i < info.opts.pathspec.count; ++i) { |
| const char *path = info.opts.pathspec.strings[i]; |
| if (path) |
| printf("never found %s\n", path); |
| } |
| |
| git_revwalk_free(walker); |
| git_repository_free(repo); |
| git_threads_shutdown(); |
| |
| return 0; |
| } |
| |
| static int mark_pathspec_match( |
| const git_diff *diff_so_far, |
| const git_diff_delta *delta_to_add, |
| const char *matched_pathspec, |
| void *payload) |
| { |
| change_info *info = payload; |
| git_strarray *paths = &info->opts.pathspec; |
| size_t i; |
| int found = 0; |
| |
| (void)diff_so_far; (void)delta_to_add; |
| |
| for (i = 0; i < paths->count; ++i) { |
| /* remove matched item from list */ |
| if (found) |
| paths->strings[i - 1] = paths->strings[i]; |
| else if (!strcmp(paths->strings[i], matched_pathspec)) |
| found = 1; |
| } |
| |
| if (found) { |
| const char *verb = "modified"; |
| if (delta_to_add->status == GIT_DELTA_ADDED) |
| verb = "added"; |
| else if (delta_to_add->status == GIT_DELTA_DELETED) |
| verb = "deleted"; |
| |
| printf("%s has %s %s\n", info->str, verb, matched_pathspec); |
| |
| paths->count--; |
| } |
| |
| return 0; |
| } |