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-rw-r--r--builtin-diff.c408
1 files changed, 0 insertions, 408 deletions
diff --git a/builtin-diff.c b/builtin-diff.c
deleted file mode 100644
index 4c289e798a..0000000000
--- a/builtin-diff.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * Builtin "git diff"
- *
- * Copyright (c) 2006 Junio C Hamano
- */
-#include "cache.h"
-#include "color.h"
-#include "commit.h"
-#include "blob.h"
-#include "tag.h"
-#include "diff.h"
-#include "diffcore.h"
-#include "revision.h"
-#include "log-tree.h"
-#include "builtin.h"
-
-struct blobinfo {
- unsigned char sha1[20];
- const char *name;
- unsigned mode;
-};
-
-static const char builtin_diff_usage[] =
-"git-diff <options> <rev>{0,2} -- <path>*";
-
-static void stuff_change(struct diff_options *opt,
- unsigned old_mode, unsigned new_mode,
- const unsigned char *old_sha1,
- const unsigned char *new_sha1,
- 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))
- 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;
- }
-
- if (opt->prefix &&
- (strncmp(old_name, opt->prefix, opt->prefix_length) ||
- strncmp(new_name, opt->prefix, opt->prefix_length)))
- return;
-
- one = alloc_filespec(old_name);
- two = alloc_filespec(new_name);
- fill_filespec(one, old_sha1, old_mode);
- fill_filespec(two, new_sha1, 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)
-{
- /* Blob vs file in the working tree*/
- struct stat st;
-
- if (argc > 1)
- usage(builtin_diff_usage);
-
- if (lstat(path, &st))
- die("'%s': %s", path, strerror(errno));
- if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
- die("'%s': not a regular file or symlink", path);
-
- if (blob[0].mode == S_IFINVALID)
- blob[0].mode = canon_mode(st.st_mode);
-
- stuff_change(&revs->diffopt,
- blob[0].mode, canon_mode(st.st_mode),
- blob[0].sha1, null_sha1,
- path, path);
- diffcore_std(&revs->diffopt);
- diff_flush(&revs->diffopt);
- return 0;
-}
-
-static int builtin_diff_blobs(struct rev_info *revs,
- int argc, const char **argv,
- struct blobinfo *blob)
-{
- unsigned mode = canon_mode(S_IFREG | 0644);
-
- if (argc > 1)
- usage(builtin_diff_usage);
-
- if (blob[0].mode == S_IFINVALID)
- blob[0].mode = mode;
-
- if (blob[1].mode == S_IFINVALID)
- blob[1].mode = mode;
-
- stuff_change(&revs->diffopt,
- blob[0].mode, blob[1].mode,
- blob[0].sha1, blob[1].sha1,
- blob[0].name, blob[1].name);
- diffcore_std(&revs->diffopt);
- diff_flush(&revs->diffopt);
- return 0;
-}
-
-static int builtin_diff_index(struct rev_info *revs,
- int argc, const char **argv)
-{
- int cached = 0;
- while (1 < argc) {
- const char *arg = argv[1];
- if (!strcmp(arg, "--cached"))
- cached = 1;
- else
- usage(builtin_diff_usage);
- argv++; argc--;
- }
- /*
- * Make sure there is one revision (i.e. pending object),
- * and there is no revision filtering parameters.
- */
- if (revs->pending.nr != 1 ||
- revs->max_count != -1 || revs->min_age != -1 ||
- revs->max_age != -1)
- usage(builtin_diff_usage);
- if (read_cache() < 0) {
- perror("read_cache");
- return -1;
- }
- return run_diff_index(revs, cached);
-}
-
-static int builtin_diff_tree(struct rev_info *revs,
- int argc, const char **argv,
- struct object_array_entry *ent)
-{
- const unsigned char *(sha1[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
- */
- if (ent[1].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);
- log_tree_diff_flush(revs);
- return 0;
-}
-
-static int builtin_diff_combined(struct rev_info *revs,
- int argc, const char **argv,
- struct object_array_entry *ent,
- int ents)
-{
- const unsigned char (*parent)[20];
- int i;
-
- if (argc > 1)
- usage(builtin_diff_usage);
-
- if (!revs->dense_combined_merges && !revs->combine_merges)
- revs->dense_combined_merges = revs->combine_merges = 1;
- parent = xmalloc(ents * sizeof(*parent));
- /* Again, the revs are all reverse */
- for (i = 0; i < ents; i++)
- hashcpy((unsigned char *)(parent + i),
- ent[ents - 1 - i].item->sha1);
- diff_tree_combined(parent[0], parent + 1, ents - 1,
- revs->dense_combined_merges, revs);
- return 0;
-}
-
-static void refresh_index_quietly(void)
-{
- struct lock_file *lock_file;
- int fd;
-
- lock_file = xcalloc(1, sizeof(struct lock_file));
- fd = hold_locked_index(lock_file, 0);
- if (fd < 0)
- return;
- discard_cache();
- read_cache();
- refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
-
- if (active_cache_changed &&
- !write_cache(fd, active_cache, active_nr))
- commit_locked_index(lock_file);
-
- rollback_lock_file(lock_file);
-}
-
-static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv)
-{
- int result;
- unsigned int options = 0;
-
- while (1 < argc && argv[1][0] == '-') {
- if (!strcmp(argv[1], "--base"))
- revs->max_count = 1;
- else if (!strcmp(argv[1], "--ours"))
- revs->max_count = 2;
- else if (!strcmp(argv[1], "--theirs"))
- revs->max_count = 3;
- else if (!strcmp(argv[1], "-q"))
- options |= DIFF_SILENT_ON_REMOVED;
- else
- return error("invalid option: %s", argv[1]);
- argv++; argc--;
- }
-
- if (revs->max_count == -1 &&
- (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
- revs->combine_merges = revs->dense_combined_merges = 1;
-
- if (read_cache() < 0) {
- perror("read_cache");
- return -1;
- }
- result = run_diff_files(revs, options);
- return diff_result_code(&revs->diffopt, result);
-}
-
-int cmd_diff(int argc, const char **argv, const char *prefix)
-{
- int i;
- struct rev_info rev;
- struct object_array_entry ent[100];
- int ents = 0, blobs = 0, paths = 0;
- const char *path = NULL;
- struct blobinfo blob[2];
- int nongit;
- int result = 0;
-
- /*
- * We could get N tree-ish in the rev.pending_objects list.
- * Also there could be M blobs there, and P pathspecs.
- *
- * N=0, M=0:
- * cache vs files (diff-files)
- * N=0, M=2:
- * compare two random blobs. P must be zero.
- * N=0, M=1, P=1:
- * compare a blob with a working tree file.
- *
- * N=1, M=0:
- * tree vs cache (diff-index --cached)
- *
- * N=2, M=0:
- * tree vs tree (diff-tree)
- *
- * N=0, M=0, P=2:
- * compare two filesystem entities (aka --no-index).
- *
- * Other cases are errors.
- */
-
- prefix = setup_git_directory_gently(&nongit);
- git_config(git_diff_ui_config, NULL);
-
- if (diff_use_color_default == -1)
- diff_use_color_default = git_use_color_default;
-
- 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);
-
- /* Otherwise, we are doing the usual "git" diff */
- rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
-
- if (nongit)
- die("Not a git repository");
- argc = setup_revisions(argc, argv, &rev, NULL);
- if (!rev.diffopt.output_format) {
- rev.diffopt.output_format = DIFF_FORMAT_PATCH;
- if (diff_setup_done(&rev.diffopt) < 0)
- die("diff_setup_done failed");
- }
- DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
- DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
-
- /*
- * If the user asked for our exit code then don't start a
- * pager or we would end up reporting its exit code instead.
- */
- if (!DIFF_OPT_TST(&rev.diffopt, EXIT_WITH_STATUS))
- setup_pager();
-
- /*
- * Do we have --cached and not have a pending object, then
- * default to HEAD by hand. Eek.
- */
- if (!rev.pending.nr) {
- int i;
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
- if (!strcmp(arg, "--"))
- break;
- else if (!strcmp(arg, "--cached")) {
- add_head_to_pending(&rev);
- if (!rev.pending.nr)
- die("No HEAD commit to compare with (yet)");
- break;
- }
- }
- }
-
- 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;
- int flags = (obj->flags & UNINTERESTING);
- if (!obj->parsed)
- obj = parse_object(obj->sha1);
- 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) {
- if (2 <= blobs)
- die("more than two blobs given: '%s'", name);
- hashcpy(blob[blobs].sha1, obj->sha1);
- blob[blobs].name = name;
- blob[blobs].mode = list->mode;
- blobs++;
- continue;
-
- }
- die("unhandled object '%s' given.", name);
- }
- if (rev.prune_data) {
- const char **pathspec = rev.prune_data;
- while (*pathspec) {
- if (!path)
- path = *pathspec;
- paths++;
- pathspec++;
- }
- }
-
- /*
- * Now, do the arguments look reasonable?
- */
- if (!ents) {
- switch (blobs) {
- case 0:
- result = builtin_diff_files(&rev, argc, argv);
- break;
- case 1:
- if (paths != 1)
- usage(builtin_diff_usage);
- result = builtin_diff_b_f(&rev, argc, argv, blob, path);
- break;
- case 2:
- if (paths)
- usage(builtin_diff_usage);
- result = builtin_diff_blobs(&rev, argc, argv, blob);
- break;
- default:
- usage(builtin_diff_usage);
- }
- }
- else if (blobs)
- usage(builtin_diff_usage);
- else if (ents == 1)
- result = builtin_diff_index(&rev, argc, argv);
- else if (ents == 2)
- result = builtin_diff_tree(&rev, argc, argv, ent);
- else if ((ents == 3) && (ent[0].item->flags & UNINTERESTING)) {
- /* diff A...B where there is one sane merge base between
- * A and B. We have ent[0] == merge-base, ent[1] == A,
- * and ent[2] == B. Show diff between the base and B.
- */
- ent[1] = ent[2];
- result = builtin_diff_tree(&rev, argc, argv, ent);
- }
- else
- result = builtin_diff_combined(&rev, argc, argv,
- ent, ents);
- result = diff_result_code(&rev.diffopt, result);
- if (1 < rev.diffopt.skip_stat_unmatch)
- refresh_index_quietly();
- return result;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 18:43:26 +0000