root/builtin/ls-remote.c

DEFINITIONS

1. tail_match
2. cmd_ls_remote

#include "builtin.h"
#include "cache.h"
#include "transport.h"
#include "remote.h"

static const char ls_remote_usage[] =
"git ls-remote [--heads] [--tags]  [--upload-pack=<exec>]\n"
"                     [-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]";

/*
 * Is there one among the list of patterns that match the tail part
 * of the path?
 */
static int tail_match(const char **pattern, const char *path)
{
        const char *p;
        char pathbuf[PATH_MAX];

        if (!pattern)
                return 1; /* no restriction */

        if (snprintf(pathbuf, sizeof(pathbuf), "/%s", path) > sizeof(pathbuf))
                return error("insanely long ref %.*s...", 20, path);
        while ((p = *(pattern++)) != NULL) {
                if (!wildmatch(p, pathbuf, 0, NULL))
                        return 1;
        }
        return 0;
}

int cmd_ls_remote(int argc, const char **argv, const char *prefix)
{
        int i;
        const char *dest = NULL;
        unsigned flags = 0;
        int get_url = 0;
        int quiet = 0;
        int status = 0;
        const char *uploadpack = NULL;
        const char **pattern = NULL;

        struct remote *remote;
        struct transport *transport;
        const struct ref *ref;

        if (argc == 2 && !strcmp("-h", argv[1]))
                usage(ls_remote_usage);

        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];

                if (*arg == '-') {
                        if (starts_with(arg, "--upload-pack=")) {
                                uploadpack = arg + 14;
                                continue;
                        }
                        if (starts_with(arg, "--exec=")) {
                                uploadpack = arg + 7;
                                continue;
                        }
                        if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
                                flags |= REF_TAGS;
                                continue;
                        }
                        if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
                                flags |= REF_HEADS;
                                continue;
                        }
                        if (!strcmp("--refs", arg)) {
                                flags |= REF_NORMAL;
                                continue;
                        }
                        if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
                                quiet = 1;
                                continue;
                        }
                        if (!strcmp("--get-url", arg)) {
                                get_url = 1;
                                continue;
                        }
                        if (!strcmp("--exit-code", arg)) {
                                /* return this code if no refs are reported */
                                status = 2;
                                continue;
                        }
                        usage(ls_remote_usage);
                }
                dest = arg;
                i++;
                break;
        }

        if (argv[i]) {
                int j;
                pattern = xcalloc(argc - i + 1, sizeof(const char *));
                for (j = i; j < argc; j++) {
                        int len = strlen(argv[j]);
                        char *p = xmalloc(len + 3);
                        sprintf(p, "*/%s", argv[j]);
                        pattern[j - i] = p;
                }
        }
        remote = remote_get(dest);
        if (!remote) {
                if (dest)
                        die("bad repository '%s'", dest);
                die("No remote configured to list refs from.");
        }
        if (!remote->url_nr)
                die("remote %s has no configured URL", dest);

        if (get_url) {
                printf("%s\n", *remote->url);
                return 0;
        }

        transport = transport_get(remote, NULL);
        if (uploadpack != NULL)
                transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);

        ref = transport_get_remote_refs(transport);
        if (transport_disconnect(transport))
                return 1;

        if (!dest && !quiet)
                fprintf(stderr, "From %s\n", *remote->url);
        for ( ; ref; ref = ref->next) {
                if (!check_ref_type(ref, flags))
                        continue;
                if (!tail_match(pattern, ref->name))
                        continue;
                printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
                status = 0; /* we found something */
        }
        return status;
}