Make rev-list flush the stdio buffers after each rev.
[gitweb.git] / rev-list.c
index ca8cc92fc05712498f6a7bf186ae98b55fc7d497..17995c34c4eae779caa36e525e9ffb72e22d87f3 100644 (file)
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "tag.h"
 #include "commit.h"
 #include "tree.h"
 #include "blob.h"
@@ -14,10 +15,14 @@ static const char rev_list_usage[] =
                      "  --max-count=nr\n"
                      "  --max-age=epoch\n"
                      "  --min-age=epoch\n"
+                     "  --bisect\n"
+                     "  --objects\n"
+                     "  --unpacked\n"
                      "  --header\n"
                      "  --pretty\n"
                      "  --merge-order [ --show-breaks ]";
 
+static int unpacked = 0;
 static int bisect_list = 0;
 static int tag_objects = 0;
 static int tree_objects = 0;
@@ -58,7 +63,8 @@ static void show_commit(struct commit *commit)
                static char pretty_header[16384];
                pretty_print_commit(commit_format, commit->buffer, ~0, pretty_header, sizeof(pretty_header));
                printf("%s%c", pretty_header, hdr_termination);
-       }       
+       }
+       fflush(stdout);
 }
 
 static int filter_commit(struct commit * commit)
@@ -103,7 +109,7 @@ static struct object_list **add_object(struct object *obj, struct object_list **
 {
        struct object_list *entry = xmalloc(sizeof(*entry));
        entry->item = obj;
-       entry->next = NULL;
+       entry->next = *p;
        entry->name = name;
        *p = entry;
        return &entry->next;
@@ -143,9 +149,11 @@ static struct object_list **process_tree(struct tree *tree, struct object_list *
        return p;
 }
 
+static struct object_list *pending_objects = NULL;
+
 static void show_commit_list(struct commit_list *list)
 {
-       struct object_list *objects = NULL, **p = &objects;
+       struct object_list *objects = NULL, **p = &objects, *pending;
        while (list) {
                struct commit *commit = pop_most_recent_commit(&list, SEEN);
 
@@ -153,6 +161,26 @@ static void show_commit_list(struct commit_list *list)
                if (process_commit(commit) == STOP)
                        break;
        }
+       for (pending = pending_objects; pending; pending = pending->next) {
+               struct object *obj = pending->item;
+               const char *name = pending->name;
+               if (obj->flags & (UNINTERESTING | SEEN))
+                       continue;
+               if (obj->type == tag_type) {
+                       obj->flags |= SEEN;
+                       p = add_object(obj, p, name);
+                       continue;
+               }
+               if (obj->type == tree_type) {
+                       p = process_tree((struct tree *)obj, p, name);
+                       continue;
+               }
+               if (obj->type == blob_type) {
+                       p = process_blob((struct blob *)obj, p, name);
+                       continue;
+               }
+               die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
+       }
        while (objects) {
                printf("%s %s\n", sha1_to_hex(objects->item->sha1), objects->name);
                objects = objects->next;
@@ -287,14 +315,16 @@ static struct commit_list *find_bisection(struct commit_list *list)
        return best;
 }
 
-struct commit_list *limit_list(struct commit_list *list)
+static struct commit_list *limit_list(struct commit_list *list)
 {
        struct commit_list *newlist = NULL;
        struct commit_list **p = &newlist;
-       do {
+       while (list) {
                struct commit *commit = pop_most_recent_commit(&list, SEEN);
                struct object *obj = &commit->object;
 
+               if (unpacked && has_sha1_pack(obj->sha1))
+                       obj->flags |= UNINTERESTING;
                if (obj->flags & UNINTERESTING) {
                        mark_parents_uninteresting(commit);
                        if (everybody_uninteresting(list))
@@ -302,24 +332,82 @@ struct commit_list *limit_list(struct commit_list *list)
                        continue;
                }
                p = &commit_list_insert(commit, p)->next;
-       } while (list);
+       }
        if (bisect_list)
                newlist = find_bisection(newlist);
        return newlist;
 }
 
+static void add_pending_object(struct object *obj, const char *name)
+{
+       add_object(obj, &pending_objects, name);
+}
+
 static struct commit *get_commit_reference(const char *name, unsigned int flags)
 {
        unsigned char sha1[20];
-       struct commit *commit;
+       struct object *object;
 
        if (get_sha1(name, sha1))
                usage(rev_list_usage);
-       commit = lookup_commit_reference(sha1);
-       if (!commit || parse_commit(commit) < 0)
-               die("bad commit object %s", name);
-       commit->object.flags |= flags;
-       return commit;
+       object = parse_object(sha1);
+       if (!object)
+               die("bad object %s", name);
+
+       /*
+        * Tag object? Look what it points to..
+        */
+       if (object->type == tag_type) {
+               struct tag *tag = (struct tag *) object;
+               object->flags |= flags;
+               if (tag_objects && !(object->flags & UNINTERESTING))
+                       add_pending_object(object, tag->tag);
+               object = tag->tagged;
+       }
+
+       /*
+        * Commit object? Just return it, we'll do all the complex
+        * reachability crud.
+        */
+       if (object->type == commit_type) {
+               struct commit *commit = (struct commit *)object;
+               object->flags |= flags;
+               if (parse_commit(commit) < 0)
+                       die("unable to parse commit %s", name);
+               return commit;
+       }
+
+       /*
+        * Tree object? Either mark it uniniteresting, or add it
+        * to the list of objects to look at later..
+        */
+       if (object->type == tree_type) {
+               struct tree *tree = (struct tree *)object;
+               if (!tree_objects)
+                       return NULL;
+               if (flags & UNINTERESTING) {
+                       mark_tree_uninteresting(tree);
+                       return NULL;
+               }
+               add_pending_object(object, "");
+               return NULL;
+       }
+
+       /*
+        * Blob object? You know the drill by now..
+        */
+       if (object->type == blob_type) {
+               struct blob *blob = (struct blob *)object;
+               if (!blob_objects)
+                       return NULL;
+               if (flags & UNINTERESTING) {
+                       mark_blob_uninteresting(blob);
+                       return NULL;
+               }
+               add_pending_object(object, "");
+               return NULL;
+       }
+       die("%s is unknown object", name);
 }
 
 int main(int argc, char **argv)
@@ -369,6 +457,11 @@ int main(int argc, char **argv)
                        blob_objects = 1;
                        continue;
                }
+               if (!strcmp(arg, "--unpacked")) {
+                       unpacked = 1;
+                       limited = 1;
+                       continue;
+               }
                if (!strncmp(arg, "--merge-order", 13)) {
                        merge_order = 1;
                        continue;
@@ -392,9 +485,6 @@ int main(int argc, char **argv)
                commit_list_insert(commit, &list);
        }
 
-       if (!list)
-               usage(rev_list_usage);
-
        if (!merge_order) {             
                if (limited)
                        list = limit_list(list);