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authorChristian Couder <chriscool@tuxfamily.org>2006-06-03 16:45:43 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-06-04 06:45:30 (GMT)
commit895f10c3b596ef955c7f252717e5b4668530c569 (patch)
treeac016fe82954e47e55316e53f99c193493c30c96 /rev-parse.c
parentea5aeb07e9ad92743eaaf216360340b70d4c3bbd (diff)
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Builtin git-rev-parse.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'rev-parse.c')
-rw-r--r--rev-parse.c364
1 files changed, 0 insertions, 364 deletions
diff --git a/rev-parse.c b/rev-parse.c
deleted file mode 100644
index 4e2d9fb..0000000
--- a/rev-parse.c
+++ /dev/null
@@ -1,364 +0,0 @@
-/*
- * rev-parse.c
- *
- * Copyright (C) Linus Torvalds, 2005
- */
-#include "cache.h"
-#include "commit.h"
-#include "refs.h"
-#include "quote.h"
-
-#define DO_REVS 1
-#define DO_NOREV 2
-#define DO_FLAGS 4
-#define DO_NONFLAGS 8
-static int filter = ~0;
-
-static char *def = NULL;
-
-#define NORMAL 0
-#define REVERSED 1
-static int show_type = NORMAL;
-static int symbolic = 0;
-static int abbrev = 0;
-static int output_sq = 0;
-
-static int revs_count = 0;
-
-/*
- * Some arguments are relevant "revision" arguments,
- * others are about output format or other details.
- * This sorts it all out.
- */
-static int is_rev_argument(const char *arg)
-{
- static const char *rev_args[] = {
- "--all",
- "--bisect",
- "--dense",
- "--branches",
- "--header",
- "--max-age=",
- "--max-count=",
- "--min-age=",
- "--no-merges",
- "--objects",
- "--objects-edge",
- "--parents",
- "--pretty",
- "--remotes",
- "--sparse",
- "--tags",
- "--topo-order",
- "--date-order",
- "--unpacked",
- NULL
- };
- const char **p = rev_args;
-
- /* accept -<digit>, like traditional "head" */
- if ((*arg == '-') && isdigit(arg[1]))
- return 1;
-
- for (;;) {
- const char *str = *p++;
- int len;
- if (!str)
- return 0;
- len = strlen(str);
- if (!strcmp(arg, str) ||
- (str[len-1] == '=' && !strncmp(arg, str, len)))
- return 1;
- }
-}
-
-/* Output argument as a string, either SQ or normal */
-static void show(const char *arg)
-{
- if (output_sq) {
- int sq = '\'', ch;
-
- putchar(sq);
- while ((ch = *arg++)) {
- if (ch == sq)
- fputs("'\\'", stdout);
- putchar(ch);
- }
- putchar(sq);
- putchar(' ');
- }
- else
- puts(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);
- else if (abbrev)
- show(find_unique_abbrev(sha1, abbrev));
- else
- show(sha1_to_hex(sha1));
-}
-
-/* Output a flag, only if filter allows it. */
-static int show_flag(char *arg)
-{
- if (!(filter & DO_FLAGS))
- return 0;
- if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
- show(arg);
- return 1;
- }
- return 0;
-}
-
-static void show_default(void)
-{
- char *s = def;
-
- if (s) {
- unsigned char sha1[20];
-
- def = NULL;
- if (!get_sha1(s, sha1)) {
- show_rev(NORMAL, sha1, s);
- return;
- }
- }
-}
-
-static int show_reference(const char *refname, const unsigned char *sha1)
-{
- show_rev(NORMAL, sha1, refname);
- return 0;
-}
-
-static void show_datestring(const char *flag, const char *datestr)
-{
- static char buffer[100];
-
- /* date handling requires both flags and revs */
- if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
- return;
- snprintf(buffer, sizeof(buffer), "%s%lu", flag, approxidate(datestr));
- show(buffer);
-}
-
-static int show_file(const char *arg)
-{
- show_default();
- if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
- show(arg);
- return 1;
- }
- return 0;
-}
-
-int main(int argc, char **argv)
-{
- int i, as_is = 0, verify = 0;
- unsigned char sha1[20];
- const char *prefix = setup_git_directory();
-
- git_config(git_default_config);
-
- for (i = 1; i < argc; i++) {
- char *arg = argv[i];
- char *dotdot;
-
- if (as_is) {
- if (show_file(arg) && as_is < 2)
- verify_filename(prefix, arg);
- continue;
- }
- if (!strcmp(arg,"-n")) {
- if (++i >= argc)
- die("-n requires an argument");
- if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
- show(arg);
- show(argv[i]);
- }
- continue;
- }
- if (!strncmp(arg,"-n",2)) {
- if ((filter & DO_FLAGS) && (filter & DO_REVS))
- show(arg);
- continue;
- }
-
- if (*arg == '-') {
- if (!strcmp(arg, "--")) {
- as_is = 2;
- /* Pass on the "--" if we show anything but files.. */
- if (filter & (DO_FLAGS | DO_REVS))
- show_file(arg);
- continue;
- }
- if (!strcmp(arg, "--default")) {
- def = argv[i+1];
- i++;
- continue;
- }
- if (!strcmp(arg, "--revs-only")) {
- filter &= ~DO_NOREV;
- continue;
- }
- if (!strcmp(arg, "--no-revs")) {
- filter &= ~DO_REVS;
- continue;
- }
- if (!strcmp(arg, "--flags")) {
- filter &= ~DO_NONFLAGS;
- continue;
- }
- if (!strcmp(arg, "--no-flags")) {
- filter &= ~DO_FLAGS;
- continue;
- }
- if (!strcmp(arg, "--verify")) {
- filter &= ~(DO_FLAGS|DO_NOREV);
- verify = 1;
- continue;
- }
- if (!strcmp(arg, "--short") ||
- !strncmp(arg, "--short=", 8)) {
- filter &= ~(DO_FLAGS|DO_NOREV);
- verify = 1;
- abbrev = DEFAULT_ABBREV;
- if (arg[7] == '=')
- abbrev = strtoul(arg + 8, NULL, 10);
- if (abbrev < MINIMUM_ABBREV)
- abbrev = MINIMUM_ABBREV;
- else if (40 <= abbrev)
- abbrev = 40;
- continue;
- }
- if (!strcmp(arg, "--sq")) {
- output_sq = 1;
- continue;
- }
- if (!strcmp(arg, "--not")) {
- show_type ^= REVERSED;
- continue;
- }
- if (!strcmp(arg, "--symbolic")) {
- symbolic = 1;
- continue;
- }
- if (!strcmp(arg, "--all")) {
- for_each_ref(show_reference);
- continue;
- }
- if (!strcmp(arg, "--branches")) {
- for_each_branch_ref(show_reference);
- continue;
- }
- if (!strcmp(arg, "--tags")) {
- for_each_tag_ref(show_reference);
- continue;
- }
- if (!strcmp(arg, "--remotes")) {
- for_each_remote_ref(show_reference);
- continue;
- }
- if (!strcmp(arg, "--show-prefix")) {
- if (prefix)
- puts(prefix);
- continue;
- }
- if (!strcmp(arg, "--show-cdup")) {
- const char *pfx = prefix;
- while (pfx) {
- pfx = strchr(pfx, '/');
- if (pfx) {
- pfx++;
- printf("../");
- }
- }
- putchar('\n');
- continue;
- }
- if (!strcmp(arg, "--git-dir")) {
- const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
- static char cwd[PATH_MAX];
- if (gitdir) {
- puts(gitdir);
- continue;
- }
- if (!prefix) {
- puts(".git");
- continue;
- }
- if (!getcwd(cwd, PATH_MAX))
- die("unable to get current working directory");
- printf("%s/.git\n", cwd);
- continue;
- }
- if (!strncmp(arg, "--since=", 8)) {
- show_datestring("--max-age=", arg+8);
- continue;
- }
- if (!strncmp(arg, "--after=", 8)) {
- show_datestring("--max-age=", arg+8);
- continue;
- }
- if (!strncmp(arg, "--before=", 9)) {
- show_datestring("--min-age=", arg+9);
- continue;
- }
- if (!strncmp(arg, "--until=", 8)) {
- show_datestring("--min-age=", arg+8);
- continue;
- }
- if (show_flag(arg) && verify)
- die("Needed a single revision");
- continue;
- }
-
- /* Not a flag argument */
- dotdot = strstr(arg, "..");
- if (dotdot) {
- unsigned char end[20];
- char *next = dotdot + 2;
- char *this = arg;
- *dotdot = 0;
- if (!*next)
- next = "HEAD";
- if (dotdot == arg)
- this = "HEAD";
- if (!get_sha1(this, sha1) && !get_sha1(next, end)) {
- show_rev(NORMAL, end, next);
- show_rev(REVERSED, sha1, this);
- continue;
- }
- *dotdot = '.';
- }
- if (!get_sha1(arg, sha1)) {
- show_rev(NORMAL, sha1, arg);
- continue;
- }
- if (*arg == '^' && !get_sha1(arg+1, sha1)) {
- show_rev(REVERSED, sha1, arg+1);
- continue;
- }
- 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");
- return 0;
-}