git-svn: support -C<num> passing to git-diff-tree

[git.git] / revision.c

diff --git a/revision.c b/revision.c
index dbd54da..6a6952c 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -53,8 +53,9 @@ static void mark_blob_uninteresting(struct blob *blob)
 
 void mark_tree_uninteresting(struct tree *tree)
 {
+       struct tree_desc desc;
+       struct name_entry entry;
        struct object *obj = &tree->object;
-       struct tree_entry_list *entry;
 
        if (obj->flags & UNINTERESTING)
                return;
@@ -63,17 +64,22 @@ void mark_tree_uninteresting(struct tree *tree)
                return;
        if (parse_tree(tree) < 0)
                die("bad tree %s", sha1_to_hex(obj->sha1));
-       entry = tree->entries;
-       tree->entries = NULL;
-       while (entry) {
-               struct tree_entry_list *next = entry->next;
-               if (entry->directory)
-                       mark_tree_uninteresting(entry->item.tree);
+
+       desc.buf = tree->buffer;
+       desc.size = tree->size;
+       while (tree_entry(&desc, &entry)) {
+               if (S_ISDIR(entry.mode))
+                       mark_tree_uninteresting(lookup_tree(entry.sha1));
                else
-                       mark_blob_uninteresting(entry->item.blob);
-               free(entry);
-               entry = next;
+                       mark_blob_uninteresting(lookup_blob(entry.sha1));
        }
+
+       /*
+        * We don't care about the tree any more
+        * after it has been marked uninteresting.
+        */
+       free(tree->buffer);
+       tree->buffer = NULL;
 }
 
 void mark_parents_uninteresting(struct commit *commit)
@@ -152,6 +158,7 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object
                if (parse_commit(commit) < 0)
                        die("unable to parse commit %s", name);
                if (flags & UNINTERESTING) {
+                       commit->object.flags |= UNINTERESTING;
                        mark_parents_uninteresting(commit);
                        revs->limited = 1;
                }
@@ -476,6 +483,36 @@ static void handle_all(struct rev_info *revs, unsigned flags)
        for_each_ref(handle_one_ref);
 }
 
+static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
+{
+       unsigned char sha1[20];
+       struct object *it;
+       struct commit *commit;
+       struct commit_list *parents;
+
+       if (*arg == '^') {
+               flags ^= UNINTERESTING;
+               arg++;
+       }
+       if (get_sha1(arg, sha1))
+               return 0;
+       while (1) {
+               it = get_reference(revs, arg, sha1, 0);
+               if (strcmp(it->type, tag_type))
+                       break;
+               memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
+       }
+       if (strcmp(it->type, commit_type))
+               return 0;
+       commit = (struct commit *)it;
+       for (parents = commit->parents; parents; parents = parents->next) {
+               it = &parents->item->object;
+               it->flags |= flags;
+               add_pending_object(revs, it, arg);
+       }
+       return 1;
+}
+
 void init_revisions(struct rev_info *revs)
 {
        memset(revs, 0, sizeof(*revs));
@@ -543,7 +580,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                revs->max_count = atoi(arg + 12);
                                continue;
                        }
-                       /* accept -<digit>, like traditilnal "head" */
+                       /* accept -<digit>, like traditional "head" */
                        if ((*arg == '-') && isdigit(arg[1])) {
                                revs->max_count = atoi(arg + 1);
                                continue;
@@ -663,6 +700,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        if (!strcmp(arg, "-c")) {
                                revs->diff = 1;
+                               revs->dense_combined_merges = 0;
                                revs->combine_merges = 1;
                                continue;
                        }
@@ -701,6 +739,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                revs->abbrev = DEFAULT_ABBREV;
                                continue;
                        }
+                       if (!strncmp(arg, "--abbrev=", 9)) {
+                               revs->abbrev = strtoul(arg + 9, NULL, 10);
+                               if (revs->abbrev < MINIMUM_ABBREV)
+                                       revs->abbrev = MINIMUM_ABBREV;
+                               else if (revs->abbrev > 40)
+                                       revs->abbrev = 40;
+                               continue;
+                       }
                        if (!strcmp(arg, "--abbrev-commit")) {
                                revs->abbrev_commit = 1;
                                continue;
@@ -739,39 +785,56 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                include = get_reference(revs, next, sha1, flags);
                                if (!exclude || !include)
                                        die("Invalid revision range %s..%s", arg, next);
+
+                               if (!seen_dashdash) {
+                                       *dotdot = '.';
+                                       verify_non_filename(revs->prefix, arg);
+                               }
                                add_pending_object(revs, exclude, this);
                                add_pending_object(revs, include, next);
                                continue;
                        }
                        *dotdot = '.';
                }
+               dotdot = strstr(arg, "^@");
+               if (dotdot && !dotdot[2]) {
+                       *dotdot = 0;
+                       if (add_parents_only(revs, arg, flags))
+                               continue;
+                       *dotdot = '^';
+               }
                local_flags = 0;
                if (*arg == '^') {
                        local_flags = UNINTERESTING;
                        arg++;
                }
-               if (get_sha1(arg, sha1) < 0) {
-                       struct stat st;
+               if (get_sha1(arg, sha1)) {
                        int j;
 
                        if (seen_dashdash || local_flags)
                                die("bad revision '%s'", arg);
 
-                       /* If we didn't have a "--", all filenames must exist */
-                       for (j = i; j < argc; j++) {
-                               if (lstat(argv[j], &st) < 0)
-                                       die("'%s': %s", argv[j], strerror(errno));
-                       }
+                       /* If we didn't have a "--":
+                        * (1) all filenames must exist;
+                        * (2) all rev-args must not be interpretable
+                        *     as a valid filename.
+                        * but the latter we have checked in the main loop.
+                        */
+                       for (j = i; j < argc; j++)
+                               verify_filename(revs->prefix, argv[j]);
+
                        revs->prune_data = get_pathspec(revs->prefix, argv + i);
                        break;
                }
+               if (!seen_dashdash)
+                       verify_non_filename(revs->prefix, arg);
                object = get_reference(revs, arg, sha1, flags ^ local_flags);
                add_pending_object(revs, object, arg);
        }
        if (def && !revs->pending_objects) {
                unsigned char sha1[20];
                struct object *object;
-               if (get_sha1(def, sha1) < 0)
+               if (get_sha1(def, sha1))
                        die("bad default revision '%s'", def);
                object = get_reference(revs, def, sha1, 0);
                add_pending_object(revs, object, def);
@@ -788,7 +851,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
        }
        if (revs->combine_merges) {
                revs->ignore_merges = 0;
-               if (revs->dense_combined_merges)
+               if (revs->dense_combined_merges &&
+                   (revs->diffopt.output_format != DIFF_FORMAT_DIFFSTAT))
                        revs->diffopt.output_format = DIFF_FORMAT_PATCH;
        }
        revs->diffopt.abbrev = revs->abbrev;