#include "cache.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "lockfile.h"
#include "commit.h"
#include "run-command.h"
#include "resolve-undo.h"
static const char *merge_argument(struct commit *commit)
{
- if (commit)
- return sha1_to_hex(commit->object.sha1);
- else
- return EMPTY_TREE_SHA1_HEX;
+ return oid_to_hex(commit ? &commit->object.oid : the_hash_algo->empty_tree);
+}
+
+int index_has_changes(struct strbuf *sb)
+{
+ struct object_id head;
+ int i;
+
+ if (!get_oid_tree("HEAD", &head)) {
+ struct diff_options opt;
+
+ diff_setup(&opt);
+ opt.flags.exit_with_status = 1;
+ if (!sb)
+ opt.flags.quick = 1;
+ do_diff_cache(&head, &opt);
+ diffcore_std(&opt);
+ for (i = 0; sb && i < diff_queued_diff.nr; i++) {
+ if (i)
+ strbuf_addch(sb, ' ');
+ strbuf_addstr(sb, diff_queued_diff.queue[i]->two->path);
+ }
+ diff_flush(&opt);
+ return opt.flags.has_changes != 0;
+ } else {
+ for (i = 0; sb && i < active_nr; i++) {
+ if (i)
+ strbuf_addch(sb, ' ');
+ strbuf_addstr(sb, active_cache[i]->name);
+ }
+ return !!active_nr;
+ }
}
int try_merge_command(const char *strategy, size_t xopts_nr,
return ret;
}
-int checkout_fast_forward(const unsigned char *head,
- const unsigned char *remote,
+int checkout_fast_forward(const struct object_id *head,
+ const struct object_id *remote,
int overwrite_ignore)
{
struct tree *trees[MAX_UNPACK_TREES];
struct tree_desc t[MAX_UNPACK_TREES];
int i, nr_trees = 0;
struct dir_struct dir;
- struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+ struct lock_file lock_file = LOCK_INIT;
refresh_cache(REFRESH_QUIET);
- hold_locked_index(lock_file, 1);
+ if (hold_locked_index(&lock_file, LOCK_REPORT_ON_ERROR) < 0)
+ return -1;
memset(&trees, 0, sizeof(trees));
- memset(&opts, 0, sizeof(opts));
memset(&t, 0, sizeof(t));
+
+ trees[nr_trees] = parse_tree_indirect(head);
+ if (!trees[nr_trees++]) {
+ rollback_lock_file(&lock_file);
+ return -1;
+ }
+ trees[nr_trees] = parse_tree_indirect(remote);
+ if (!trees[nr_trees++]) {
+ rollback_lock_file(&lock_file);
+ return -1;
+ }
+ for (i = 0; i < nr_trees; i++) {
+ parse_tree(trees[i]);
+ init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
+ }
+
+ memset(&opts, 0, sizeof(opts));
if (overwrite_ignore) {
memset(&dir, 0, sizeof(dir));
dir.flags |= DIR_SHOW_IGNORED;
opts.fn = twoway_merge;
setup_unpack_trees_porcelain(&opts, "merge");
- trees[nr_trees] = parse_tree_indirect(head);
- if (!trees[nr_trees++])
+ if (unpack_trees(nr_trees, t, &opts)) {
+ rollback_lock_file(&lock_file);
+ clear_unpack_trees_porcelain(&opts);
return -1;
- trees[nr_trees] = parse_tree_indirect(remote);
- if (!trees[nr_trees++])
- return -1;
- for (i = 0; i < nr_trees; i++) {
- parse_tree(trees[i]);
- init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
}
- if (unpack_trees(nr_trees, t, &opts))
- return -1;
- if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
- die(_("unable to write new index file"));
+ clear_unpack_trees_porcelain(&opts);
+
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ return error(_("unable to write new index file"));
return 0;
}