#include <stdlib.h>
+#include <fnmatch.h>
#include "cache.h"
#include "commit.h"
#include "refs.h"
static const char show_branch_usage[] =
-"git-show-branch [--all] [--heads] [--tags] [--more=count | --list | --independent | --merge-base ] [<refs>...]";
+"git-show-branch [--all] [--heads] [--tags] [--topo-order] [--more=count | --list | --independent | --merge-base ] [<refs>...]";
#define UNINTERESTING 01
/* Parent is the first parent of the commit. We may name it
* as (n+1)th generation ancestor of the same head_name as
- * commit is nth generation ancestore of, if that generation
+ * commit is nth generation ancestor of, if that generation
* number is better than the name it already has.
*/
static void name_parent(struct commit *commit, struct commit *parent)
nth = 0;
while (parents) {
struct commit *p = parents->item;
- char newname[1000];
+ char newname[1000], *en;
parents = parents->next;
nth++;
if (p->object.util)
continue;
- sprintf(newname, "%s^%d", n->head_name, nth);
+ en = newname;
+ switch (n->generation) {
+ case 0:
+ en += sprintf(en, "%s", n->head_name);
+ break;
+ case 1:
+ en += sprintf(en, "%s^", n->head_name);
+ break;
+ default:
+ en += sprintf(en, "%s~%d",
+ n->head_name, n->generation);
+ break;
+ }
+ if (nth == 1)
+ en += sprintf(en, "^");
+ else
+ en += sprintf(en, "^%d", nth);
name_commit(p, strdup(newname), 0);
i++;
name_first_parent_chain(p);
while (*list_p) {
struct commit_list *parents;
+ int still_interesting = !!interesting(*list_p);
struct commit *commit = pop_one_commit(list_p);
int flags = commit->object.flags & all_mask;
- int still_interesting = !!interesting(*list_p);
- if (!still_interesting && extra < 0)
+ if (!still_interesting && extra <= 0)
break;
mark_seen(commit, seen_p);
parents = parents->next;
if ((this_flag & flags) == flags)
continue;
- parse_commit(p);
+ if (!p->object.parsed)
+ parse_commit(p);
if (mark_seen(p, seen_p) && !still_interesting)
extra--;
p->object.flags |= flags;
insert_by_date(p, list_p);
}
}
+
+ /*
+ * Postprocess to complete well-poisoning.
+ *
+ * At this point we have all the commits we have seen in
+ * seen_p list (which happens to be sorted chronologically but
+ * it does not really matter). Mark anything that can be
+ * reached from uninteresting commits not interesting.
+ */
+ for (;;) {
+ int changed = 0;
+ struct commit_list *s;
+ for (s = *seen_p; s; s = s->next) {
+ struct commit *c = s->item;
+ struct commit_list *parents;
+
+ if (((c->object.flags & all_revs) != all_revs) &&
+ !(c->object.flags & UNINTERESTING))
+ continue;
+
+ /* The current commit is either a merge base or
+ * already uninteresting one. Mark its parents
+ * as uninteresting commits _only_ if they are
+ * already parsed. No reason to find new ones
+ * here.
+ */
+ parents = c->parents;
+ while (parents) {
+ struct commit *p = parents->item;
+ parents = parents->next;
+ if (!(p->object.flags & UNINTERESTING)) {
+ p->object.flags |= UNINTERESTING;
+ changed = 1;
+ }
+ }
+ }
+ if (!changed)
+ break;
+ }
}
-static void show_one_commit(struct commit *commit)
+static void show_one_commit(struct commit *commit, int no_name)
{
- char pretty[128], *cp;
+ char pretty[256], *cp;
struct commit_name *name = commit->object.util;
- pretty_print_commit(CMIT_FMT_ONELINE, commit->buffer, ~0,
- pretty, sizeof(pretty));
+ if (commit->object.parsed)
+ pretty_print_commit(CMIT_FMT_ONELINE, commit->buffer, ~0,
+ pretty, sizeof(pretty));
+ else
+ strcpy(pretty, "(unavailable)");
if (!strncmp(pretty, "[PATCH] ", 8))
cp = pretty + 8;
else
cp = pretty;
- if (name && name->head_name) {
- printf("[%s", name->head_name);
- if (name->generation)
- printf("~%d", name->generation);
- printf("] ");
+
+ if (!no_name) {
+ if (name && name->head_name) {
+ printf("[%s", name->head_name);
+ if (name->generation) {
+ if (name->generation == 1)
+ printf("^");
+ else
+ printf("~%d", name->generation);
+ }
+ printf("] ");
+ }
+ else
+ printf("[%s] ",
+ find_unique_abbrev(commit->object.sha1, 7));
}
puts(cp);
}
static char *ref_name[MAX_REVS + 1];
static int ref_name_cnt;
+static const char *find_digit_prefix(const char *s, int *v)
+{
+ const char *p;
+ int ver;
+ char ch;
+
+ for (p = s, ver = 0;
+ '0' <= (ch = *p) && ch <= '9';
+ p++)
+ ver = ver * 10 + ch - '0';
+ *v = ver;
+ return p;
+}
+
+
+static int version_cmp(const char *a, const char *b)
+{
+ while (1) {
+ int va, vb;
+
+ a = find_digit_prefix(a, &va);
+ b = find_digit_prefix(b, &vb);
+ if (va != vb)
+ return va - vb;
+
+ while (1) {
+ int ca = *a;
+ int cb = *b;
+ if ('0' <= ca && ca <= '9')
+ ca = 0;
+ if ('0' <= cb && cb <= '9')
+ cb = 0;
+ if (ca != cb)
+ return ca - cb;
+ if (!ca)
+ break;
+ a++;
+ b++;
+ }
+ if (!*a && !*b)
+ return 0;
+ }
+}
+
static int compare_ref_name(const void *a_, const void *b_)
{
const char * const*a = a_, * const*b = b_;
- return strcmp(*a, *b);
+ return version_cmp(*a, *b);
}
static void sort_ref_range(int bottom, int top)
static int append_ref(const char *refname, const unsigned char *sha1)
{
struct commit *commit = lookup_commit_reference_gently(sha1, 1);
+ int i;
+
if (!commit)
return 0;
- if (MAX_REVS < ref_name_cnt) {
+ /* Avoid adding the same thing twice */
+ for (i = 0; i < ref_name_cnt; i++)
+ if (!strcmp(refname, ref_name[i]))
+ return 0;
+
+ if (MAX_REVS <= ref_name_cnt) {
fprintf(stderr, "warning: ignoring %s; "
- "cannot handle more than %d refs",
+ "cannot handle more than %d refs\n",
refname, MAX_REVS);
return 0;
}
static int append_head_ref(const char *refname, const unsigned char *sha1)
{
- if (strncmp(refname, "refs/heads/", 11))
+ unsigned char tmp[20];
+ int ofs = 11;
+ if (strncmp(refname, "refs/heads/", ofs))
return 0;
- return append_ref(refname + 11, sha1);
+ /* If both heads/foo and tags/foo exists, get_sha1 would
+ * get confused.
+ */
+ if (get_sha1(refname + ofs, tmp) || memcmp(tmp, sha1, 20))
+ ofs = 5;
+ return append_ref(refname + ofs, sha1);
}
static int append_tag_ref(const char *refname, const unsigned char *sha1)
return append_ref(refname + 5, sha1);
}
+static const char *match_ref_pattern = NULL;
+static int match_ref_slash = 0;
+static int count_slash(const char *s)
+{
+ int cnt = 0;
+ while (*s)
+ if (*s++ == '/')
+ cnt++;
+ return cnt;
+}
+
+static int append_matching_ref(const char *refname, const unsigned char *sha1)
+{
+ /* we want to allow pattern hold/<asterisk> to show all
+ * branches under refs/heads/hold/, and v0.99.9? to show
+ * refs/tags/v0.99.9a and friends.
+ */
+ const char *tail;
+ int slash = count_slash(refname);
+ for (tail = refname; *tail && match_ref_slash < slash; )
+ if (*tail++ == '/')
+ slash--;
+ if (!*tail)
+ return 0;
+ if (fnmatch(match_ref_pattern, tail, 0))
+ return 0;
+ if (!strncmp("refs/heads/", refname, 11))
+ return append_head_ref(refname, sha1);
+ if (!strncmp("refs/tags/", refname, 10))
+ return append_tag_ref(refname, sha1);
+ return append_ref(refname, sha1);
+}
+
static void snarf_refs(int head, int tag)
{
if (head) {
return 0;
}
+static void append_one_rev(const char *av)
+{
+ unsigned char revkey[20];
+ if (!get_sha1(av, revkey)) {
+ append_ref(av, revkey);
+ return;
+ }
+ if (strchr(av, '*') || strchr(av, '?')) {
+ /* glob style match */
+ int saved_matches = ref_name_cnt;
+ match_ref_pattern = av;
+ match_ref_slash = count_slash(av);
+ for_each_ref(append_matching_ref);
+ if (saved_matches == ref_name_cnt &&
+ ref_name_cnt < MAX_REVS)
+ error("no matching refs with %s", av);
+ if (saved_matches + 1 < ref_name_cnt)
+ sort_ref_range(saved_matches, ref_name_cnt);
+ return;
+ }
+ die("bad sha1 reference %s", av);
+}
+
int main(int ac, char **av)
{
struct commit *rev[MAX_REVS], *commit;
unsigned int rev_mask[MAX_REVS];
int num_rev, i, extra = 0;
int all_heads = 0, all_tags = 0;
- int all_mask, all_revs, shown_merge_point;
+ int all_mask, all_revs;
char head_path[128];
+ const char *head_path_p;
int head_path_len;
unsigned char head_sha1[20];
int merge_base = 0;
int independent = 0;
- char **label;
+ int no_name = 0;
+ int sha1_name = 0;
+ int shown_merge_point = 0;
+ int topo_order = 0;
setup_git_directory();
extra = 1;
else if (!strcmp(arg, "--list"))
extra = -1;
+ else if (!strcmp(arg, "--no-name"))
+ no_name = 1;
+ else if (!strcmp(arg, "--sha1-name"))
+ sha1_name = 1;
else if (!strncmp(arg, "--more=", 7))
extra = atoi(arg + 7);
else if (!strcmp(arg, "--merge-base"))
merge_base = 1;
else if (!strcmp(arg, "--independent"))
independent = 1;
+ else if (!strcmp(arg, "--topo-order"))
+ topo_order = 1;
else
usage(show_branch_usage);
ac--; av++;
if (1 < independent + merge_base + (extra != 0))
usage(show_branch_usage);
+ /* If nothing is specified, show all branches by default */
+ if (ac + all_heads + all_tags == 0)
+ all_heads = 1;
+
if (all_heads + all_tags)
snarf_refs(all_heads, all_tags);
-
while (0 < ac) {
- unsigned char revkey[20];
- if (get_sha1(*av, revkey))
- die("bad sha1 reference %s", *av);
- append_ref(*av, revkey);
+ append_one_rev(*av);
ac--; av++;
}
- /* If still no revs, then add heads */
- if (!ref_name_cnt)
- snarf_refs(1, 0);
+ if (!ref_name_cnt) {
+ fprintf(stderr, "No revs to be shown.\n");
+ exit(0);
+ }
for (num_rev = 0; ref_name[num_rev]; num_rev++) {
unsigned char revkey[20];
if (MAX_REVS <= num_rev)
die("cannot handle more than %d revs.", MAX_REVS);
if (get_sha1(ref_name[num_rev], revkey))
- usage(show_branch_usage);
+ die("'%s' is not a valid ref.", ref_name[num_rev]);
commit = lookup_commit_reference(revkey);
if (!commit)
die("cannot find commit %s (%s)",
if (0 <= extra)
join_revs(&list, &seen, num_rev, extra);
- head_path_len = readlink(".git/HEAD", head_path, sizeof(head_path)-1);
- if ((head_path_len < 0) || get_sha1("HEAD", head_sha1))
+ head_path_p = resolve_ref(git_path("HEAD"), head_sha1, 1);
+ if (head_path_p) {
+ head_path_len = strlen(head_path_p);
+ memcpy(head_path, head_path_p, head_path_len + 1);
+ }
+ else {
+ head_path_len = 0;
head_path[0] = 0;
- else
- head_path[head_path_len] = 0;
+ }
if (merge_base)
return show_merge_base(seen, num_rev);
return show_independent(rev, num_rev, ref_name, rev_mask);
/* Show list; --more=-1 means list-only */
- if (1 < num_rev) {
+ if (1 < num_rev || extra < 0) {
for (i = 0; i < num_rev; i++) {
int j;
int is_head = rev_is_head(head_path,
printf("%c [%s] ",
is_head ? '*' : '!', ref_name[i]);
}
- show_one_commit(rev[i]);
+ /* header lines never need name */
+ show_one_commit(rev[i], 1);
}
if (0 <= extra) {
for (i = 0; i < num_rev; i++)
exit(0);
/* Sort topologically */
- sort_in_topological_order(&seen);
+ if (topo_order)
+ sort_in_topological_order(&seen);
/* Give names to commits */
- name_commits(seen, rev, ref_name, num_rev);
+ if (!sha1_name && !no_name)
+ name_commits(seen, rev, ref_name, num_rev);
all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
all_revs = all_mask & ~((1u << REV_SHIFT) - 1);
- shown_merge_point = 0;
while (seen) {
struct commit *commit = pop_one_commit(&seen);
int this_flag = commit->object.flags;
- int is_merge_point = (this_flag & all_revs) == all_revs;
- static char *obvious[] = { "" };
- if (is_merge_point)
- shown_merge_point = 1;
+ shown_merge_point |= ((this_flag & all_revs) == all_revs);
if (1 < num_rev) {
for (i = 0; i < num_rev; i++)
? '+' : ' ');
putchar(' ');
}
- show_one_commit(commit);
- if (num_rev == 1)
- label = obvious;
- if (shown_merge_point && is_merge_point)
- if (--extra < 0)
- break;
+ show_one_commit(commit, no_name);
+
+ if (shown_merge_point && --extra < 0)
+ break;
}
return 0;
}