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/*
* libgit2 "rev-list" example - shows how to transform a rev-spec into a list
* of commit ids
*
* 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 int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, char **opts);
int main (int argc, char **argv)
{
git_repository *repo;
git_revwalk *walk;
git_oid oid;
char buf[GIT_OID_HEXSZ+1];
git_threads_init();
check_lg2(git_repository_open_ext(&repo, ".", 0, NULL), "opening repository", NULL);
check_lg2(git_revwalk_new(&walk, repo), "allocating revwalk", NULL);
check_lg2(revwalk_parseopts(repo, walk, argc-1, argv+1), "parsing options", NULL);
while (!git_revwalk_next(&oid, walk)) {
git_oid_fmt(buf, &oid);
buf[GIT_OID_HEXSZ] = '\0';
printf("%s\n", buf);
}
git_threads_shutdown();
return 0;
}
static int push_commit(git_revwalk *walk, const git_oid *oid, int hide)
{
if (hide)
return git_revwalk_hide(walk, oid);
else
return git_revwalk_push(walk, oid);
}
static int push_spec(git_repository *repo, git_revwalk *walk, const char *spec, int hide)
{
int error;
git_object *obj;
if ((error = git_revparse_single(&obj, repo, spec)) < 0)
return error;
error = push_commit(walk, git_object_id(obj), hide);
git_object_free(obj);
return error;
}
static int push_range(git_repository *repo, git_revwalk *walk, const char *range, int hide)
{
git_revspec revspec;
int error = 0;
if ((error = git_revparse(&revspec, repo, range)))
return error;
if (revspec.flags & GIT_REVPARSE_MERGE_BASE) {
/* TODO: support "<commit>...<commit>" */
return GIT_EINVALIDSPEC;
}
if ((error = push_commit(walk, git_object_id(revspec.from), !hide)))
goto out;
error = push_commit(walk, git_object_id(revspec.to), hide);
out:
git_object_free(revspec.from);
git_object_free(revspec.to);
return error;
}
static int revwalk_parseopts(git_repository *repo, git_revwalk *walk, int nopts, char **opts)
{
int hide, i, error;
unsigned int sorting = GIT_SORT_NONE;
hide = 0;
for (i = 0; i < nopts; i++) {
if (!strcmp(opts[i], "--topo-order")) {
sorting = GIT_SORT_TOPOLOGICAL | (sorting & GIT_SORT_REVERSE);
git_revwalk_sorting(walk, sorting);
} else if (!strcmp(opts[i], "--date-order")) {
sorting = GIT_SORT_TIME | (sorting & GIT_SORT_REVERSE);
git_revwalk_sorting(walk, sorting);
} else if (!strcmp(opts[i], "--reverse")) {
sorting = (sorting & ~GIT_SORT_REVERSE)
| ((sorting & GIT_SORT_REVERSE) ? 0 : GIT_SORT_REVERSE);
git_revwalk_sorting(walk, sorting);
} else if (!strcmp(opts[i], "--not")) {
hide = !hide;
} else if (opts[i][0] == '^') {
if ((error = push_spec(repo, walk, opts[i] + 1, !hide)))
return error;
} else if (strstr(opts[i], "..")) {
if ((error = push_range(repo, walk, opts[i], hide)))
return error;
} else {
if ((error = push_spec(repo, walk, opts[i], hide)))
return error;
}
}
return 0;
}
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