#include "submodule.h"
#include "sha1-array.h"
+#define DIFF_NO_INDEX_EXPLICIT 1
+#define DIFF_NO_INDEX_IMPLICIT 2
+
struct blobinfo {
unsigned char sha1[20];
const char *name;
static int builtin_diff_b_f(struct rev_info *revs,
int argc, const char **argv,
- struct blobinfo *blob,
- const char *path)
+ struct blobinfo *blob)
{
/* Blob vs file in the working tree*/
struct stat st;
+ const char *path;
if (argc > 1)
usage(builtin_diff_usage);
+ GUARD_PATHSPEC(&revs->prune_data, PATHSPEC_FROMTOP | PATHSPEC_LITERAL);
+ path = revs->prune_data.items[0].match;
+
if (lstat(path, &st))
die_errno(_("failed to stat '%s'"), path);
if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
usage(builtin_diff_usage);
if (!cached) {
setup_work_tree();
- if (read_cache_preload(revs->diffopt.pathspec.raw) < 0) {
+ if (read_cache_preload(&revs->diffopt.pathspec) < 0) {
perror("read_cache_preload");
return -1;
}
if (ent1->item->flags & UNINTERESTING)
swap = 1;
sha1[swap] = ent0->item->sha1;
- sha1[1-swap] = ent1->item->sha1;
+ sha1[1 - swap] = ent1->item->sha1;
diff_tree_sha1(sha1[0], sha1[1], "", &revs->diffopt);
log_tree_diff_flush(revs);
return 0;
revs->combine_merges = revs->dense_combined_merges = 1;
setup_work_tree();
- if (read_cache_preload(revs->diffopt.pathspec.raw) < 0) {
+ if (read_cache_preload(&revs->diffopt.pathspec) < 0) {
perror("read_cache_preload");
return -1;
}
struct rev_info rev;
struct object_array ent = OBJECT_ARRAY_INIT;
int blobs = 0, paths = 0;
- const char *path = NULL;
struct blobinfo blob[2];
- int nongit;
+ int nongit = 0, no_index = 0;
int result = 0;
/*
* Other cases are errors.
*/
- prefix = setup_git_directory_gently(&nongit);
- gitmodules_config();
+ /* Were we asked to do --no-index explicitly? */
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "--")) {
+ i++;
+ break;
+ }
+ if (!strcmp(argv[i], "--no-index"))
+ no_index = DIFF_NO_INDEX_EXPLICIT;
+ if (argv[i][0] != '-')
+ break;
+ }
+
+ if (!no_index)
+ prefix = setup_git_directory_gently(&nongit);
+
+ /*
+ * Treat git diff with at least one path outside of the
+ * repo the same as if the command would have been executed
+ * outside of a git repository. In this case it behaves
+ * the same way as "git diff --no-index <a> <b>", which acts
+ * as a colourful "diff" replacement.
+ */
+ if (nongit || ((argc == i + 2) &&
+ (!path_inside_repo(prefix, argv[i]) ||
+ !path_inside_repo(prefix, argv[i + 1]))))
+ no_index = DIFF_NO_INDEX_IMPLICIT;
+
+ if (!no_index)
+ gitmodules_config();
git_config(git_diff_ui_config, NULL);
init_revisions(&rev, prefix);
- /* If this is a no-index diff, just run it and exit there. */
- diff_no_index(&rev, argc, argv, nongit, prefix);
+ if (no_index && argc != i + 2) {
+ if (no_index == DIFF_NO_INDEX_IMPLICIT) {
+ /*
+ * There was no --no-index and there were not two
+ * paths. It is possible that the user intended
+ * to do an inside-repository operation.
+ */
+ fprintf(stderr, "Not a git repository\n");
+ fprintf(stderr,
+ "To compare two paths outside a working tree:\n");
+ }
+ /* Give the usage message for non-repository usage and exit. */
+ usagef("git diff %s <path> <path>",
+ no_index == DIFF_NO_INDEX_EXPLICIT ?
+ "--no-index" : "[--no-index]");
+
+ }
+ if (no_index)
+ /* If this is a no-index diff, just run it and exit there. */
+ diff_no_index(&rev, argc, argv, prefix);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
die(_("unhandled object '%s' given."), name);
}
}
- if (rev.prune_data.nr) {
- if (!path)
- path = rev.prune_data.items[0].match;
+ if (rev.prune_data.nr)
paths += rev.prune_data.nr;
- }
/*
* Now, do the arguments look reasonable?
case 1:
if (paths != 1)
usage(builtin_diff_usage);
- result = builtin_diff_b_f(&rev, argc, argv, blob, path);
+ result = builtin_diff_b_f(&rev, argc, argv, blob);
break;
case 2:
if (paths)