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-rw-r--r--builtin/name-rev.c133
1 files changed, 109 insertions, 24 deletions
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 87d4854..20fcf8c 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -4,6 +4,7 @@
#include "tag.h"
#include "refs.h"
#include "parse-options.h"
+#include "sha1-lookup.h"
#define CUTOFF_DATE_SLOP 86400 /* one day */
@@ -96,12 +97,51 @@ static int subpath_matches(const char *path, const char *filter)
return -1;
}
+static const char *name_ref_abbrev(const char *refname, int shorten_unambiguous)
+{
+ if (shorten_unambiguous)
+ refname = shorten_unambiguous_ref(refname, 0);
+ else if (!prefixcmp(refname, "refs/heads/"))
+ refname = refname + 11;
+ else if (!prefixcmp(refname, "refs/"))
+ refname = refname + 5;
+ return refname;
+}
+
struct name_ref_data {
int tags_only;
int name_only;
const char *ref_filter;
};
+static struct tip_table {
+ struct tip_table_entry {
+ unsigned char sha1[20];
+ const char *refname;
+ } *table;
+ int nr;
+ int alloc;
+ int sorted;
+} tip_table;
+
+static void add_to_tip_table(const unsigned char *sha1, const char *refname,
+ int shorten_unambiguous)
+{
+ refname = name_ref_abbrev(refname, shorten_unambiguous);
+
+ ALLOC_GROW(tip_table.table, tip_table.nr + 1, tip_table.alloc);
+ hashcpy(tip_table.table[tip_table.nr].sha1, sha1);
+ tip_table.table[tip_table.nr].refname = xstrdup(refname);
+ tip_table.nr++;
+ tip_table.sorted = 0;
+}
+
+static int tipcmp(const void *a_, const void *b_)
+{
+ const struct tip_table_entry *a = a_, *b = b_;
+ return hashcmp(a->sha1, b->sha1);
+}
+
static int name_ref(const char *path, const unsigned char *sha1, int flags, void *cb_data)
{
struct object *o = parse_object(sha1);
@@ -124,6 +164,8 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
}
}
+ add_to_tip_table(sha1, path, can_abbreviate_output);
+
while (o && o->type == OBJ_TAG) {
struct tag *t = (struct tag *) o;
if (!t->tagged)
@@ -134,18 +176,38 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
- if (can_abbreviate_output)
- path = shorten_unambiguous_ref(path, 0);
- else if (!prefixcmp(path, "refs/heads/"))
- path = path + 11;
- else if (!prefixcmp(path, "refs/"))
- path = path + 5;
-
+ path = name_ref_abbrev(path, can_abbreviate_output);
name_rev(commit, xstrdup(path), 0, 0, deref);
}
return 0;
}
+static const unsigned char *nth_tip_table_ent(size_t ix, void *table_)
+{
+ struct tip_table_entry *table = table_;
+ return table[ix].sha1;
+}
+
+static const char *get_exact_ref_match(const struct object *o)
+{
+ int found;
+
+ if (!tip_table.table || !tip_table.nr)
+ return NULL;
+
+ if (!tip_table.sorted) {
+ qsort(tip_table.table, tip_table.nr, sizeof(*tip_table.table),
+ tipcmp);
+ tip_table.sorted = 1;
+ }
+
+ found = sha1_pos(o->sha1, tip_table.table, tip_table.nr,
+ nth_tip_table_ent);
+ if (0 <= found)
+ return tip_table.table[found].refname;
+ return NULL;
+}
+
/* returns a static buffer */
static const char *get_rev_name(const struct object *o)
{
@@ -154,7 +216,7 @@ static const char *get_rev_name(const struct object *o)
struct commit *c;
if (o->type != OBJ_COMMIT)
- return NULL;
+ return get_exact_ref_match(o);
c = (struct commit *) o;
n = c->util;
if (!n)
@@ -245,25 +307,31 @@ static void name_rev_line(char *p, struct name_ref_data *data)
int cmd_name_rev(int argc, const char **argv, const char *prefix)
{
struct object_array revs = OBJECT_ARRAY_INIT;
- int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0;
+ int all = 0, transform_stdin = 0, allow_undefined = 1, always = 0, peel_tag = 0;
struct name_ref_data data = { 0, 0, NULL };
struct option opts[] = {
- OPT_BOOLEAN(0, "name-only", &data.name_only, N_("print only names (no SHA-1)")),
- OPT_BOOLEAN(0, "tags", &data.tags_only, N_("only use tags to name the commits")),
+ OPT_BOOL(0, "name-only", &data.name_only, N_("print only names (no SHA-1)")),
+ OPT_BOOL(0, "tags", &data.tags_only, N_("only use tags to name the commits")),
OPT_STRING(0, "refs", &data.ref_filter, N_("pattern"),
N_("only use refs matching <pattern>")),
OPT_GROUP(""),
- OPT_BOOLEAN(0, "all", &all, N_("list all commits reachable from all refs")),
- OPT_BOOLEAN(0, "stdin", &transform_stdin, N_("read from stdin")),
- OPT_BOOLEAN(0, "undefined", &allow_undefined, N_("allow to print `undefined` names")),
- OPT_BOOLEAN(0, "always", &always,
+ OPT_BOOL(0, "all", &all, N_("list all commits reachable from all refs")),
+ OPT_BOOL(0, "stdin", &transform_stdin, N_("read from stdin")),
+ OPT_BOOL(0, "undefined", &allow_undefined, N_("allow to print `undefined` names (default)")),
+ OPT_BOOL(0, "always", &always,
N_("show abbreviated commit object as fallback")),
+ {
+ /* A Hidden OPT_BOOL */
+ OPTION_SET_INT, 0, "peel-tag", &peel_tag, NULL,
+ N_("dereference tags in the input (internal use)"),
+ PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1,
+ },
OPT_END(),
};
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, opts, name_rev_usage, 0);
- if (!!all + !!transform_stdin + !!argc > 1) {
+ if (all + transform_stdin + !!argc > 1) {
error("Specify either a list, or --all, not both!");
usage_with_options(name_rev_usage, opts);
}
@@ -272,7 +340,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
for (; argc; argc--, argv++) {
unsigned char sha1[20];
- struct object *o;
+ struct object *object;
struct commit *commit;
if (get_sha1(*argv, sha1)) {
@@ -281,17 +349,34 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
continue;
}
- o = deref_tag(parse_object(sha1), *argv, 0);
- if (!o || o->type != OBJ_COMMIT) {
- fprintf(stderr, "Could not get commit for %s. Skipping.\n",
+ commit = NULL;
+ object = parse_object(sha1);
+ if (object) {
+ struct object *peeled = deref_tag(object, *argv, 0);
+ if (peeled && peeled->type == OBJ_COMMIT)
+ commit = (struct commit *)peeled;
+ }
+
+ if (!object) {
+ fprintf(stderr, "Could not get object for %s. Skipping.\n",
*argv);
continue;
}
- commit = (struct commit *)o;
- if (cutoff > commit->date)
- cutoff = commit->date;
- add_object_array((struct object *)commit, *argv, &revs);
+ if (commit) {
+ if (cutoff > commit->date)
+ cutoff = commit->date;
+ }
+
+ if (peel_tag) {
+ if (!commit) {
+ fprintf(stderr, "Could not get commit for %s. Skipping.\n",
+ *argv);
+ continue;
+ }
+ object = (struct object *)commit;
+ }
+ add_object_array(object, *argv, &revs);
}
if (cutoff)
generated by cgit v0.10.2-6-g49f6 at 2024-04-26 18:40:47 (GMT)