#include "cache.h"
+#include "tag.h"
#include "commit.h"
+#include "tree.h"
+#include "blob.h"
+#include "epoch.h"
#define SEEN (1u << 0)
#define INTERESTING (1u << 1)
-#define UNINTERESTING (1u << 2)
+#define COUNTED (1u << 2)
+#define SHOWN (LAST_EPOCH_FLAG << 2)
static const char rev_list_usage[] =
"usage: git-rev-list [OPTION] commit-id <commit-id>\n"
" --max-count=nr\n"
" --max-age=epoch\n"
" --min-age=epoch\n"
+ " --bisect\n"
+ " --objects\n"
+ " --unpacked\n"
" --header\n"
- " --pretty";
+ " --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;
+static int blob_objects = 0;
+static int verbose_header = 0;
+static int show_parents = 0;
+static int hdr_termination = 0;
+static const char *prefix = "";
+static unsigned long max_age = -1;
+static unsigned long min_age = -1;
+static int max_count = -1;
+static enum cmit_fmt commit_format = CMIT_FMT_RAW;
+static int merge_order = 0;
+static int show_breaks = 0;
+static int stop_traversal = 0;
+
+static void show_commit(struct commit *commit)
+{
+ commit->object.flags |= SHOWN;
+ if (show_breaks) {
+ prefix = "| ";
+ if (commit->object.flags & DISCONTINUITY) {
+ prefix = "^ ";
+ } else if (commit->object.flags & BOUNDARY) {
+ prefix = "= ";
+ }
+ }
+ printf("%s%s", prefix, sha1_to_hex(commit->object.sha1));
+ if (show_parents) {
+ struct commit_list *parents = commit->parents;
+ while (parents) {
+ printf(" %s", sha1_to_hex(parents->item->object.sha1));
+ parents = parents->next;
+ }
+ }
+ putchar('\n');
+ if (verbose_header) {
+ 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)
+{
+ if (merge_order && stop_traversal && commit->object.flags & BOUNDARY)
+ return STOP;
+ if (commit->object.flags & (UNINTERESTING|SHOWN))
+ return CONTINUE;
+ if (min_age != -1 && (commit->date > min_age))
+ return CONTINUE;
+ if (max_age != -1 && (commit->date < max_age)) {
+ if (!merge_order)
+ return STOP;
+ else {
+ stop_traversal = 1;
+ return CONTINUE;
+ }
+ }
+ if (max_count != -1 && !max_count--)
+ return STOP;
+ return DO;
+}
+
+static int process_commit(struct commit * commit)
+{
+ int action=filter_commit(commit);
+
+ if (action == STOP) {
+ return STOP;
+ }
+
+ if (action == CONTINUE) {
+ return CONTINUE;
+ }
+
+ show_commit(commit);
+
+ return CONTINUE;
+}
+
+static struct object_list **add_object(struct object *obj, struct object_list **p, const char *name)
+{
+ struct object_list *entry = xmalloc(sizeof(*entry));
+ entry->item = obj;
+ entry->next = *p;
+ entry->name = name;
+ *p = entry;
+ return &entry->next;
+}
+
+static struct object_list **process_blob(struct blob *blob, struct object_list **p, const char *name)
+{
+ struct object *obj = &blob->object;
+
+ if (!blob_objects)
+ return p;
+ if (obj->flags & (UNINTERESTING | SEEN))
+ return p;
+ obj->flags |= SEEN;
+ return add_object(obj, p, name);
+}
+
+static struct object_list **process_tree(struct tree *tree, struct object_list **p, const char *name)
+{
+ struct object *obj = &tree->object;
+ struct tree_entry_list *entry;
+
+ if (!tree_objects)
+ return p;
+ if (obj->flags & (UNINTERESTING | SEEN))
+ return p;
+ if (parse_tree(tree) < 0)
+ die("bad tree object %s", sha1_to_hex(obj->sha1));
+ obj->flags |= SEEN;
+ p = add_object(obj, p, name);
+ for (entry = tree->entries ; entry ; entry = entry->next) {
+ if (entry->directory)
+ p = process_tree(entry->item.tree, p, entry->name);
+ else
+ p = process_blob(entry->item.blob, p, entry->name);
+ }
+ 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, *pending;
+ while (list) {
+ struct commit *commit = pop_most_recent_commit(&list, SEEN);
+
+ p = process_tree(commit->tree, p, "");
+ 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;
+ }
+}
+
+static void mark_blob_uninteresting(struct blob *blob)
+{
+ if (!blob_objects)
+ return;
+ if (blob->object.flags & UNINTERESTING)
+ return;
+ blob->object.flags |= UNINTERESTING;
+}
+
+static void mark_tree_uninteresting(struct tree *tree)
+{
+ struct object *obj = &tree->object;
+ struct tree_entry_list *entry;
+
+ if (!tree_objects)
+ return;
+ if (obj->flags & UNINTERESTING)
+ return;
+ obj->flags |= UNINTERESTING;
+ if (parse_tree(tree) < 0)
+ die("bad tree %s", sha1_to_hex(obj->sha1));
+ entry = tree->entries;
+ while (entry) {
+ if (entry->directory)
+ mark_tree_uninteresting(entry->item.tree);
+ else
+ mark_blob_uninteresting(entry->item.blob);
+ entry = entry->next;
+ }
+}
static void mark_parents_uninteresting(struct commit *commit)
{
struct commit_list *parents = commit->parents;
+ if (tree_objects)
+ mark_tree_uninteresting(commit->tree);
while (parents) {
struct commit *commit = parents->item;
commit->object.flags |= UNINTERESTING;
return 1;
}
+/*
+ * This is a truly stupid algorithm, but it's only
+ * used for bisection, and we just don't care enough.
+ *
+ * We care just barely enough to avoid recursing for
+ * non-merge entries.
+ */
+static int count_distance(struct commit_list *entry)
+{
+ int nr = 0;
+
+ while (entry) {
+ struct commit *commit = entry->item;
+ struct commit_list *p;
+
+ if (commit->object.flags & (UNINTERESTING | COUNTED))
+ break;
+ nr++;
+ commit->object.flags |= COUNTED;
+ p = commit->parents;
+ entry = p;
+ if (p) {
+ p = p->next;
+ while (p) {
+ nr += count_distance(p);
+ p = p->next;
+ }
+ }
+ }
+ return nr;
+}
+
+static void clear_distance(struct commit_list *list)
+{
+ while (list) {
+ struct commit *commit = list->item;
+ commit->object.flags &= ~COUNTED;
+ list = list->next;
+ }
+}
+
+static struct commit_list *find_bisection(struct commit_list *list)
+{
+ int nr, closest;
+ struct commit_list *p, *best;
+
+ nr = 0;
+ p = list;
+ while (p) {
+ nr++;
+ p = p->next;
+ }
+ closest = 0;
+ best = list;
+
+ p = list;
+ while (p) {
+ int distance = count_distance(p);
+ clear_distance(list);
+ if (nr - distance < distance)
+ distance = nr - distance;
+ if (distance > closest) {
+ best = p;
+ closest = distance;
+ }
+ p = p->next;
+ }
+ if (best)
+ best->next = NULL;
+ return best;
+}
+
+static struct commit_list *limit_list(struct commit_list *list)
+{
+ struct commit_list *newlist = NULL;
+ struct commit_list **p = &newlist;
+ 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))
+ break;
+ continue;
+ }
+ p = &commit_list_insert(commit, p)->next;
+ }
+ 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 object *object;
+
+ if (get_sha1(name, sha1))
+ usage(rev_list_usage);
+ 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)
{
- int nr_sha;
- unsigned char sha1[2][20];
struct commit_list *list = NULL;
- struct commit *commit, *end;
- int i, verbose_header = 0, show_parents = 0, pretty_print = 0;
- int hdr_termination = 0;
- const char *prefix = "";
- unsigned long max_age = -1;
- unsigned long min_age = -1;
- int max_count = -1;
-
- nr_sha = 0;
+ int i, limited = 0;
+
for (i = 1 ; i < argc; i++) {
+ int flags;
char *arg = argv[i];
+ struct commit *commit;
if (!strncmp(arg, "--max-count=", 12)) {
max_count = atoi(arg + 12);
verbose_header = 1;
continue;
}
- if (!strcmp(arg, "--pretty")) {
+ if (!strncmp(arg, "--pretty", 8)) {
+ commit_format = get_commit_format(arg+8);
verbose_header = 1;
- pretty_print = 1;
hdr_termination = '\n';
prefix = "commit ";
continue;
show_parents = 1;
continue;
}
+ if (!strcmp(arg, "--bisect")) {
+ bisect_list = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--objects")) {
+ tag_objects = 1;
+ tree_objects = 1;
+ blob_objects = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--unpacked")) {
+ unpacked = 1;
+ limited = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--merge-order", 13)) {
+ merge_order = 1;
+ continue;
+ }
+ if (!strncmp(arg, "--show-breaks", 13)) {
+ show_breaks = 1;
+ continue;
+ }
- if (nr_sha > 2 || get_sha1(arg, sha1[nr_sha]))
+ flags = 0;
+ if (*arg == '^') {
+ flags = UNINTERESTING;
+ arg++;
+ limited = 1;
+ }
+ if (show_breaks && !merge_order)
usage(rev_list_usage);
- nr_sha++;
- }
-
- if (!nr_sha)
- usage(rev_list_usage);
-
- commit = lookup_commit_reference(sha1[0]);
- if (!commit || parse_commit(commit) < 0)
- die("bad starting commit object");
-
- end = NULL;
- if (nr_sha > 1) {
- end = lookup_commit_reference(sha1[1]);
- if (!end || parse_commit(end) < 0)
- die("bad ending commit object");
- }
-
- commit_list_insert(commit, &list);
- if (end) {
- struct commit_list *newlist = NULL;
- struct commit_list **p = &newlist;
- do {
- struct commit *commit = pop_most_recent_commit(&list, SEEN);
- struct object *obj = &commit->object;
-
- if (commit == end || (obj->flags & UNINTERESTING)) {
- mark_parents_uninteresting(commit);
- if (everybody_uninteresting(list))
- break;
- continue;
- }
- p = &commit_list_insert(commit, p)->next;
- } while (list);
- list = newlist;
+ commit = get_commit_reference(arg, flags);
+ if (!commit)
+ continue;
+ commit_list_insert(commit, &list);
}
- while (list) {
- struct commit *commit = pop_most_recent_commit(&list, SEEN);
-
- if (commit->object.flags & UNINTERESTING)
- continue;
- if (min_age != -1 && (commit->date > min_age))
- continue;
- if (max_age != -1 && (commit->date < max_age))
- break;
- if (max_count != -1 && !max_count--)
- break;
- printf("%s%s", prefix, sha1_to_hex(commit->object.sha1));
- if (show_parents) {
- struct commit_list *parents = commit->parents;
- while (parents) {
- printf(" %s", sha1_to_hex(parents->item->object.sha1));
- parents = parents->next;
- }
- }
- putchar('\n');
- if (verbose_header) {
- const char *buf = commit->buffer;
- if (pretty_print) {
- static char pretty_header[16384];
- pretty_print_commit(commit->buffer, ~0, pretty_header, sizeof(pretty_header));
- buf = pretty_header;
- }
- printf("%s%c", buf, hdr_termination);
+ if (!merge_order) {
+ if (limited)
+ list = limit_list(list);
+ show_commit_list(list);
+ } else {
+ if (sort_list_in_merge_order(list, &process_commit)) {
+ die("merge order sort failed\n");
}
}
+
return 0;
}