Code

Merge branch 'jn/gitweb-unspecified-action' into maint-1.7.8
[git.git] / builtin / diff.c
index ffcdd055ca0b9b30bec2ce1f22e348ec15d58c81..0fe638fc45c780e53901b8be22d3b4d715be3c30 100644 (file)
@@ -13,6 +13,7 @@
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"
+#include "submodule.h"
 
 struct blobinfo {
        unsigned char sha1[20];
@@ -21,7 +22,7 @@ struct blobinfo {
 };
 
 static const char builtin_diff_usage[] =
-"git diff <options> <rev>{0,2} -- <path>*";
+"git diff [<options>] [<commit> [<commit>]] [--] [<path>...]";
 
 static void stuff_change(struct diff_options *opt,
                         unsigned old_mode, unsigned new_mode,
@@ -70,9 +71,9 @@ static int builtin_diff_b_f(struct rev_info *revs,
                usage(builtin_diff_usage);
 
        if (lstat(path, &st))
-               die_errno("failed to stat '%s'", path);
+               die_errno(_("failed to stat '%s'"), path);
        if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
-               die("'%s': not a regular file or symlink", path);
+               die(_("'%s': not a regular file or symlink"), path);
 
        diff_set_mnemonic_prefix(&revs->diffopt, "o/", "w/");
 
@@ -134,7 +135,7 @@ static int builtin_diff_index(struct rev_info *revs,
            revs->max_count != -1 || revs->min_age != -1 ||
            revs->max_age != -1)
                usage(builtin_diff_usage);
-       if (read_cache_preload(revs->diffopt.paths) < 0) {
+       if (read_cache_preload(revs->diffopt.pathspec.raw) < 0) {
                perror("read_cache_preload");
                return -1;
        }
@@ -181,6 +182,7 @@ static int builtin_diff_combined(struct rev_info *revs,
                hashcpy((unsigned char *)(parent + i), ent[i].item->sha1);
        diff_tree_combined(parent[0], parent + 1, ents - 1,
                           revs->dense_combined_merges, revs);
+       free((void *)parent);
        return 0;
 }
 
@@ -196,17 +198,11 @@ static void refresh_index_quietly(void)
        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);
+       update_index_if_able(&the_index, 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] == '-') {
@@ -221,7 +217,7 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
                else if (!strcmp(argv[1], "-h"))
                        usage(builtin_diff_usage);
                else
-                       return error("invalid option: %s", argv[1]);
+                       return error(_("invalid option: %s"), argv[1]);
                argv++; argc--;
        }
 
@@ -236,12 +232,11 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
                revs->combine_merges = revs->dense_combined_merges = 1;
 
        setup_work_tree();
-       if (read_cache_preload(revs->diffopt.paths) < 0) {
+       if (read_cache_preload(revs->diffopt.pathspec.raw) < 0) {
                perror("read_cache_preload");
                return -1;
        }
-       result = run_diff_files(revs, options);
-       return diff_result_code(&revs->diffopt, result);
+       return run_diff_files(revs, options);
 }
 
 int cmd_diff(int argc, const char **argv, const char *prefix)
@@ -279,11 +274,9 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
         */
 
        prefix = setup_git_directory_gently(&nongit);
+       gitmodules_config();
        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. */
@@ -297,12 +290,12 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
        DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
 
        if (nongit)
-               die("Not a git repository");
+               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");
+                       die(_("diff_setup_done failed"));
        }
 
        DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
@@ -328,8 +321,11 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                        else if (!strcmp(arg, "--cached") ||
                                 !strcmp(arg, "--staged")) {
                                add_head_to_pending(&rev);
-                               if (!rev.pending.nr)
-                                       die("No HEAD commit to compare with (yet)");
+                               if (!rev.pending.nr) {
+                                       struct tree *tree;
+                                       tree = lookup_tree((const unsigned char*)EMPTY_TREE_SHA1_BIN);
+                                       add_pending_object(&rev, &tree->object, "HEAD");
+                               }
                                break;
                        }
                }
@@ -344,12 +340,12 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                        obj = parse_object(obj->sha1);
                obj = deref_tag(obj, NULL, 0);
                if (!obj)
-                       die("invalid object '%s' given.", name);
+                       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'",
+                               die(_("more than %d trees given: '%s'"),
                                    (int) ARRAY_SIZE(ent), name);
                        obj->flags |= flags;
                        ent[ents].item = obj;
@@ -359,7 +355,7 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                }
                if (obj->type == OBJ_BLOB) {
                        if (2 <= blobs)
-                               die("more than two blobs given: '%s'", name);
+                               die(_("more than two blobs given: '%s'"), name);
                        hashcpy(blob[blobs].sha1, obj->sha1);
                        blob[blobs].name = name;
                        blob[blobs].mode = list->mode;
@@ -367,16 +363,12 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                        continue;
 
                }
-               die("unhandled object '%s' given.", name);
+               die(_("unhandled object '%s' given."), name);
        }
-       if (rev.prune_data) {
-               const char **pathspec = rev.prune_data;
-               while (*pathspec) {
-                       if (!path)
-                               path = *pathspec;
-                       paths++;
-                       pathspec++;
-               }
+       if (rev.prune_data.nr) {
+               if (!path)
+                       path = rev.prune_data.items[0].match;
+               paths += rev.prune_data.nr;
        }
 
        /*
@@ -407,17 +399,19 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                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.
+       else if (ent[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.
                 */
-               ent[1] = ent[2];
+               ent[1] = ent[ents-1];
                result = builtin_diff_tree(&rev, argc, argv, ent);
-       }
-       else
+       } else
                result = builtin_diff_combined(&rev, argc, argv,
-                                            ent, ents);
+                                              ent, ents);
        result = diff_result_code(&rev.diffopt, result);
        if (1 < rev.diffopt.skip_stat_unmatch)
                refresh_index_quietly();