Function changed_files

builtin/difftool.c:225–273

}

static void changed_files(struct repository *repo,
			  struct hashmap *result, const char *index_path,
			  const char *workdir)
{
	struct child_process update_index = CHILD_PROCESS_INIT;
	struct child_process diff_files = CHILD_PROCESS_INIT;
	struct strbuf buf = STRBUF_INIT;
	const char *git_dir = absolute_path(repo_get_git_dir(repo));
	FILE *fp;

	strvec_pushl(&update_index.args,
		     "--git-dir", git_dir, "--work-tree", workdir,
		     "update-index", "--really-refresh", "-q",
		     "--unmerged", NULL);
	update_index.no_stdin = 1;
	update_index.no_stdout = 1;
	update_index.no_stderr = 1;
	update_index.git_cmd = 1;
	update_index.use_shell = 0;
	update_index.clean_on_exit = 1;
	update_index.dir = workdir;
	strvec_pushf(&update_index.env, "GIT_INDEX_FILE=%s", index_path);
	/* Ignore any errors of update-index */
	run_command(&update_index);

	strvec_pushl(&diff_files.args,
		     "--git-dir", git_dir, "--work-tree", workdir,
		     "diff-files", "--name-only", "-z", NULL);
	diff_files.no_stdin = 1;
	diff_files.git_cmd = 1;
	diff_files.use_shell = 0;
	diff_files.clean_on_exit = 1;
	diff_files.out = -1;
	diff_files.dir = workdir;
	strvec_pushf(&diff_files.env, "GIT_INDEX_FILE=%s", index_path);
	if (start_command(&diff_files))
		die("could not obtain raw diff");
	fp = xfdopen(diff_files.out, "r");
	while (!strbuf_getline_nul(&buf, fp)) {
		struct path_entry *entry;
		FLEX_ALLOC_STR(entry, path, buf.buf);
		hashmap_entry_init(&entry->entry, strhash(buf.buf));
		hashmap_add(result, &entry->entry);
	}
	fclose(fp);
	if (finish_command(&diff_files))
		die("diff-files did not exit properly");
	strbuf_release(&buf);
}

static int ensure_leading_directories(struct repository *repo, char *path)
{