#include "refs.h"
#include "quote.h"
#include "builtin.h"
+#include "parse-options.h"
#define DO_REVS 1
#define DO_NOREV 2
#define NORMAL 0
#define REVERSED 1
static int show_type = NORMAL;
+
+#define SHOW_SYMBOLIC_ASIS 1
+#define SHOW_SYMBOLIC_FULL 2
static int symbolic;
static int abbrev;
static int output_sq;
-static int revs_count;
-
/*
* Some arguments are relevant "revision" arguments,
* others are about output format or other details.
puts(arg);
}
+/* Like show(), but with a negation prefix according to type */
+static void show_with_type(int type, const char *arg)
+{
+ if (type != show_type)
+ putchar('^');
+ show(arg);
+}
+
/* Output a revision, only if filter allows it */
static void show_rev(int type, const unsigned char *sha1, const char *name)
{
if (!(filter & DO_REVS))
return;
def = NULL;
- revs_count++;
- if (type != show_type)
- putchar('^');
- if (symbolic && name)
- show(name);
+ if (symbolic && name) {
+ if (symbolic == SHOW_SYMBOLIC_FULL) {
+ unsigned char discard[20];
+ char *full;
+
+ switch (dwim_ref(name, strlen(name), discard, &full)) {
+ case 0:
+ /*
+ * Not found -- not a ref. We could
+ * emit "name" here, but symbolic-full
+ * users are interested in finding the
+ * refs spelled in full, and they would
+ * need to filter non-refs if we did so.
+ */
+ break;
+ case 1: /* happy */
+ show_with_type(type, full);
+ break;
+ default: /* ambiguous */
+ error("refname '%s' is ambiguous", name);
+ break;
+ }
+ } else {
+ show_with_type(type, name);
+ }
+ }
else if (abbrev)
- show(find_unique_abbrev(sha1, abbrev));
+ show_with_type(type, find_unique_abbrev(sha1, abbrev));
else
- show(sha1_to_hex(sha1));
+ show_with_type(type, sha1_to_hex(sha1));
}
/* Output a flag, only if filter allows it. */
return 0;
}
-static void show_default(void)
+static int show_default(void)
{
const char *s = def;
def = NULL;
if (!get_sha1(s, sha1)) {
show_rev(NORMAL, sha1, s);
- return;
+ return 1;
}
}
+ return 0;
}
static int show_reference(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
return 0;
}
+static int try_parent_shorthands(const char *arg)
+{
+ char *dotdot;
+ unsigned char sha1[20];
+ struct commit *commit;
+ struct commit_list *parents;
+ int parents_only;
+
+ if ((dotdot = strstr(arg, "^!")))
+ parents_only = 0;
+ else if ((dotdot = strstr(arg, "^@")))
+ parents_only = 1;
+
+ if (!dotdot || dotdot[2])
+ return 0;
+
+ *dotdot = 0;
+ if (get_sha1(arg, sha1))
+ return 0;
+
+ if (!parents_only)
+ show_rev(NORMAL, sha1, arg);
+ commit = lookup_commit_reference(sha1);
+ for (parents = commit->parents; parents; parents = parents->next)
+ show_rev(parents_only ? NORMAL : REVERSED,
+ parents->item->object.sha1, arg);
+
+ return 1;
+}
+
+static int parseopt_dump(const struct option *o, const char *arg, int unset)
+{
+ struct strbuf *parsed = o->value;
+ if (unset)
+ strbuf_addf(parsed, " --no-%s", o->long_name);
+ else if (o->short_name)
+ strbuf_addf(parsed, " -%c", o->short_name);
+ else
+ strbuf_addf(parsed, " --%s", o->long_name);
+ if (arg) {
+ strbuf_addch(parsed, ' ');
+ sq_quote_buf(parsed, arg);
+ }
+ return 0;
+}
+
+static const char *skipspaces(const char *s)
+{
+ while (isspace(*s))
+ s++;
+ return s;
+}
+
+static int cmd_parseopt(int argc, const char **argv, const char *prefix)
+{
+ static int keep_dashdash = 0;
+ static char const * const parseopt_usage[] = {
+ "git rev-parse --parseopt [options] -- [<args>...]",
+ NULL
+ };
+ static struct option parseopt_opts[] = {
+ OPT_BOOLEAN(0, "keep-dashdash", &keep_dashdash,
+ "keep the `--` passed as an arg"),
+ OPT_END(),
+ };
+
+ struct strbuf sb, parsed;
+ const char **usage = NULL;
+ struct option *opts = NULL;
+ int onb = 0, osz = 0, unb = 0, usz = 0;
+
+ strbuf_init(&parsed, 0);
+ strbuf_addstr(&parsed, "set --");
+ argc = parse_options(argc, argv, parseopt_opts, parseopt_usage,
+ PARSE_OPT_KEEP_DASHDASH);
+ if (argc < 1 || strcmp(argv[0], "--"))
+ usage_with_options(parseopt_usage, parseopt_opts);
+
+ strbuf_init(&sb, 0);
+ /* get the usage up to the first line with a -- on it */
+ for (;;) {
+ if (strbuf_getline(&sb, stdin, '\n') == EOF)
+ die("premature end of input");
+ ALLOC_GROW(usage, unb + 1, usz);
+ if (!strcmp("--", sb.buf)) {
+ if (unb < 1)
+ die("no usage string given before the `--' separator");
+ usage[unb] = NULL;
+ break;
+ }
+ usage[unb++] = strbuf_detach(&sb, NULL);
+ }
+
+ /* parse: (<short>|<short>,<long>|<long>)[=?]? SP+ <help> */
+ while (strbuf_getline(&sb, stdin, '\n') != EOF) {
+ const char *s;
+ struct option *o;
+
+ if (!sb.len)
+ continue;
+
+ ALLOC_GROW(opts, onb + 1, osz);
+ memset(opts + onb, 0, sizeof(opts[onb]));
+
+ o = &opts[onb++];
+ s = strchr(sb.buf, ' ');
+ if (!s || *sb.buf == ' ') {
+ o->type = OPTION_GROUP;
+ o->help = xstrdup(skipspaces(sb.buf));
+ continue;
+ }
+
+ o->type = OPTION_CALLBACK;
+ o->help = xstrdup(skipspaces(s));
+ o->value = &parsed;
+ o->flags = PARSE_OPT_NOARG;
+ o->callback = &parseopt_dump;
+ while (s > sb.buf && strchr("*=?!", s[-1])) {
+ switch (*--s) {
+ case '=':
+ o->flags &= ~PARSE_OPT_NOARG;
+ break;
+ case '?':
+ o->flags &= ~PARSE_OPT_NOARG;
+ o->flags |= PARSE_OPT_OPTARG;
+ break;
+ case '!':
+ o->flags |= PARSE_OPT_NONEG;
+ break;
+ case '*':
+ o->flags |= PARSE_OPT_HIDDEN;
+ break;
+ }
+ }
+
+ if (s - sb.buf == 1) /* short option only */
+ o->short_name = *sb.buf;
+ else if (sb.buf[1] != ',') /* long option only */
+ o->long_name = xmemdupz(sb.buf, s - sb.buf);
+ else {
+ o->short_name = *sb.buf;
+ o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2);
+ }
+ }
+ strbuf_release(&sb);
+
+ /* put an OPT_END() */
+ ALLOC_GROW(opts, onb + 1, osz);
+ memset(opts + onb, 0, sizeof(opts[onb]));
+ argc = parse_options(argc, argv, opts, usage,
+ keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0);
+
+ strbuf_addf(&parsed, " --");
+ sq_quote_argv(&parsed, argv, 0);
+ puts(parsed.buf);
+ return 0;
+}
+
+static void die_no_single_rev(int quiet)
+{
+ if (quiet)
+ exit(1);
+ else
+ die("Needed a single revision");
+}
+
int cmd_rev_parse(int argc, const char **argv, const char *prefix)
{
- int i, as_is = 0, verify = 0;
+ int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
unsigned char sha1[20];
+ const char *name = NULL;
- git_config(git_default_config);
+ if (argc > 1 && !strcmp("--parseopt", argv[1]))
+ return cmd_parseopt(argc - 1, argv + 1, prefix);
+ prefix = setup_git_directory();
+ git_config(git_default_config, NULL);
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
verify = 1;
continue;
}
+ if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
+ quiet = 1;
+ continue;
+ }
if (!strcmp(arg, "--short") ||
!prefixcmp(arg, "--short=")) {
filter &= ~(DO_FLAGS|DO_NOREV);
continue;
}
if (!strcmp(arg, "--symbolic")) {
- symbolic = 1;
+ symbolic = SHOW_SYMBOLIC_ASIS;
+ continue;
+ }
+ if (!strcmp(arg, "--symbolic-full-name")) {
+ symbolic = SHOW_SYMBOLIC_FULL;
continue;
}
if (!strcmp(arg, "--all")) {
continue;
}
if (show_flag(arg) && verify)
- die("Needed a single revision");
+ die_no_single_rev(quiet);
continue;
}
/* Not a flag argument */
if (try_difference(arg))
continue;
- if (!get_sha1(arg, sha1)) {
- show_rev(NORMAL, sha1, arg);
+ if (try_parent_shorthands(arg))
continue;
+ name = arg;
+ type = NORMAL;
+ if (*arg == '^') {
+ name++;
+ type = REVERSED;
}
- if (*arg == '^' && !get_sha1(arg+1, sha1)) {
- show_rev(REVERSED, sha1, arg+1);
+ if (!get_sha1(name, sha1)) {
+ if (verify)
+ revs_count++;
+ else
+ show_rev(type, sha1, name);
continue;
}
+ if (verify)
+ die_no_single_rev(quiet);
as_is = 1;
if (!show_file(arg))
continue;
- if (verify)
- die("Needed a single revision");
verify_filename(prefix, arg);
}
- show_default();
- if (verify && revs_count != 1)
- die("Needed a single revision");
+ if (verify) {
+ if (revs_count == 1) {
+ show_rev(type, sha1, name);
+ return 0;
+ } else if (revs_count == 0 && show_default())
+ return 0;
+ die_no_single_rev(quiet);
+ } else
+ show_default();
return 0;
}