* Copyright (c) 2006 Junio C Hamano
*/
#include "cache.h"
+#include "lockfile.h"
#include "color.h"
#include "commit.h"
#include "blob.h"
#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];
+ struct object_id oid;
const char *name;
unsigned mode;
};
static void stuff_change(struct diff_options *opt,
unsigned old_mode, unsigned new_mode,
- const unsigned char *old_sha1,
- const unsigned char *new_sha1,
- int old_sha1_valid,
- int new_sha1_valid,
+ const struct object_id *old_oid,
+ const struct object_id *new_oid,
+ int old_oid_valid,
+ int new_oid_valid,
const char *old_name,
const char *new_name)
{
struct diff_filespec *one, *two;
- if (!is_null_sha1(old_sha1) && !is_null_sha1(new_sha1) &&
- !hashcmp(old_sha1, new_sha1) && (old_mode == new_mode))
+ if (!is_null_oid(old_oid) && !is_null_oid(new_oid) &&
+ !oidcmp(old_oid, new_oid) && (old_mode == new_mode))
return;
if (DIFF_OPT_TST(opt, REVERSE_DIFF)) {
- unsigned tmp;
- const unsigned char *tmp_u;
- const char *tmp_c;
- tmp = old_mode; old_mode = new_mode; new_mode = tmp;
- tmp_u = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_u;
- tmp_c = old_name; old_name = new_name; new_name = tmp_c;
+ SWAP(old_mode, new_mode);
+ SWAP(old_oid, new_oid);
+ SWAP(old_name, new_name);
}
if (opt->prefix &&
one = alloc_filespec(old_name);
two = alloc_filespec(new_name);
- fill_filespec(one, old_sha1, old_sha1_valid, old_mode);
- fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
+ fill_filespec(one, old_oid->hash, old_oid_valid, old_mode);
+ fill_filespec(two, new_oid->hash, new_oid_valid, new_mode);
diff_queue(&diff_queued_diff, one, two);
}
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)))
stuff_change(&revs->diffopt,
blob[0].mode, canon_mode(st.st_mode),
- blob[0].sha1, null_sha1,
+ &blob[0].oid, &null_oid,
1, 0,
path, path);
diffcore_std(&revs->diffopt);
stuff_change(&revs->diffopt,
blob[0].mode, blob[1].mode,
- blob[0].sha1, blob[1].sha1,
+ &blob[0].oid, &blob[1].oid,
1, 1,
blob[0].name, blob[1].name);
diffcore_std(&revs->diffopt);
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;
}
static int builtin_diff_tree(struct rev_info *revs,
int argc, const char **argv,
- struct object_array_entry *ent)
+ struct object_array_entry *ent0,
+ struct object_array_entry *ent1)
{
- const unsigned char *(sha1[2]);
+ const struct object_id *(oid[2]);
int swap = 0;
if (argc > 1)
usage(builtin_diff_usage);
- /* We saw two trees, ent[0] and ent[1].
- * if ent[1] is uninteresting, they are swapped
+ /*
+ * We saw two trees, ent0 and ent1. If ent1 is uninteresting,
+ * swap them.
*/
- if (ent[1].item->flags & UNINTERESTING)
+ if (ent1->item->flags & UNINTERESTING)
swap = 1;
- sha1[swap] = ent[0].item->sha1;
- sha1[1-swap] = ent[1].item->sha1;
- diff_tree_sha1(sha1[0], sha1[1], "", &revs->diffopt);
+ oid[swap] = &ent0->item->oid;
+ oid[1 - swap] = &ent1->item->oid;
+ diff_tree_sha1(oid[0]->hash, oid[1]->hash, "", &revs->diffopt);
log_tree_diff_flush(revs);
return 0;
}
struct object_array_entry *ent,
int ents)
{
- struct sha1_array parents = SHA1_ARRAY_INIT;
+ struct oid_array parents = OID_ARRAY_INIT;
int i;
if (argc > 1)
if (!revs->dense_combined_merges && !revs->combine_merges)
revs->dense_combined_merges = revs->combine_merges = 1;
for (i = 1; i < ents; i++)
- sha1_array_append(&parents, ent[i].item->sha1);
- diff_tree_combined(ent[0].item->sha1, &parents,
+ oid_array_append(&parents, &ent[i].item->oid);
+ diff_tree_combined(ent[0].item->oid.hash, &parents,
revs->dense_combined_merges, revs);
- sha1_array_clear(&parents);
+ oid_array_clear(&parents);
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;
}
{
int i;
struct rev_info rev;
- struct object_array_entry ent[100];
- int ents = 0, blobs = 0, paths = 0;
- const char *path = NULL;
+ struct object_array ent = OBJECT_ARRAY_INIT;
+ int blobs = 0, paths = 0;
struct blobinfo blob[2];
- int nongit;
+ int nongit = 0, no_index = 0;
int result = 0;
/*
* Other cases are errors.
*/
+ /* 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;
+ }
+
prefix = setup_git_directory_gently(&nongit);
- gitmodules_config();
+
+ if (!no_index) {
+ /*
+ * 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();
+ init_diff_ui_defaults();
git_config(git_diff_ui_config, NULL);
+ precompose_argv(argc, argv);
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);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
}
for (i = 0; i < rev.pending.nr; i++) {
- struct object_array_entry *list = rev.pending.objects+i;
- struct object *obj = list->item;
- const char *name = list->name;
+ struct object_array_entry *entry = &rev.pending.objects[i];
+ struct object *obj = entry->item;
+ const char *name = entry->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
- obj = parse_object(obj->sha1);
+ obj = parse_object(obj->oid.hash);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die(_("invalid object '%s' given."), name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
+
if (obj->type == OBJ_TREE) {
- if (ARRAY_SIZE(ent) <= ents)
- die(_("more than %d trees given: '%s'"),
- (int) ARRAY_SIZE(ent), name);
obj->flags |= flags;
- ent[ents].item = obj;
- ent[ents].name = name;
- ents++;
- continue;
- }
- if (obj->type == OBJ_BLOB) {
+ add_object_array(obj, name, &ent);
+ } else if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die(_("more than two blobs given: '%s'"), name);
- hashcpy(blob[blobs].sha1, obj->sha1);
+ hashcpy(blob[blobs].oid.hash, obj->oid.hash);
blob[blobs].name = name;
- blob[blobs].mode = list->mode;
+ blob[blobs].mode = entry->mode;
blobs++;
- continue;
+ } else {
+ die(_("unhandled object '%s' given."), name);
}
- 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?
*/
- if (!ents) {
+ if (!ent.nr) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
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)
}
else if (blobs)
usage(builtin_diff_usage);
- else if (ents == 1)
+ else if (ent.nr == 1)
result = builtin_diff_index(&rev, argc, argv);
- else if (ents == 2)
- result = builtin_diff_tree(&rev, argc, argv, ent);
- else if (ent[0].item->flags & UNINTERESTING) {
+ else if (ent.nr == 2)
+ result = builtin_diff_tree(&rev, argc, argv,
+ &ent.objects[0], &ent.objects[1]);
+ else if (ent.objects[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
- * between A and B. We have ent[0] == merge-base,
- * ent[ents-2] == A, and ent[ents-1] == B. Show diff
- * between the base and B. Note that we pick one
- * merge base at random if there are more than one.
+ * between A and B. We have ent.objects[0] ==
+ * merge-base, ent.objects[ents-2] == A, and
+ * ent.objects[ents-1] == B. Show diff between the
+ * base and B. Note that we pick one merge base at
+ * random if there are more than one.
*/
- ent[1] = ent[ents-1];
- result = builtin_diff_tree(&rev, argc, argv, ent);
+ result = builtin_diff_tree(&rev, argc, argv,
+ &ent.objects[0],
+ &ent.objects[ent.nr-1]);
} else
result = builtin_diff_combined(&rev, argc, argv,
- ent, ents);
+ ent.objects, ent.nr);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();