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#include <stdio.h>
#include <string.h>
#include <time.h>
#include <git2.h>
static int must(const char* msg, int err);
int
main()
{
git_libgit2_init();
git_repository* repo = NULL;
must("open repository", git_repository_open_ext(&repo, NULL, GIT_REPOSITORY_OPEN_FROM_ENV, NULL));
git_revwalk* walker = NULL;
must("walk revisions", git_revwalk_new(&walker, repo));
must("find HEAD", git_revwalk_push_head(walker));
git_oid oid;
char prev[37];
prev[0] = 0;
char date[37];
int count = 0;
while (0 == git_revwalk_next(&oid, walker)) {
git_commit* commit;
must("find commit", git_commit_lookup(&commit, repo, &oid));
const git_time_t gt = git_commit_time(commit);
const struct tm* const tm = gmtime(>);
if (NULL == tm) {
perror("read time");
exit(1);
}
snprintf(
date,
37,
"%d%02d%02d",
tm->tm_year + 1900,
tm->tm_mon + 1,
tm->tm_mday);
if (0 != prev[0]) {
if (0 == strncmp(prev, date, 37))
count++;
else break; // Last commit is not deallocated!
}
strcpy(prev, date);
git_commit_free(commit);
}
printf("%s.%d\n", date, count + 1);
}
/// If [[err]] is considered erroneuos, print [[msg]] and the last libgit2 error to standard error and then terminate.
int
must(const char* msg, const int err)
{
if (0 > err) {
const git_error* const e = git_error_last();
if (NULL != msg)
dprintf(2, "%s: ", msg);
dprintf(2, "%s\n", e->message);
exit(1);
}
return err;
}
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