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18e32b5b7a
This patch removes certain behaviour of "git tag -l foo", currently listing every tag name having "foo" as a substring. The same thing now could be achieved doing "git tag -l '*foo*'". This feature was added recently when git-tag.sh got the -n option for showing tag annotations, because that commit also replaced the old "grep pattern" behaviour with a more preferable "shell pattern" behaviour (although slightly modified as you can see). Thus, the following builtin-tag.c implemented it in order to ensure that tests were passing unchanged with both programs. Since common "shell patterns" match names with a given substring _only_ when * is inserted before and after (as in "*substring*"), and the "plain" behaviour cannot be achieved easily with the current implementation, this is mostly the right thing to do, in order to make it more flexible and consistent. Tests for "git tag" were also changed to reflect this. Signed-off-by: Carlos Rica <jasampler@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
454 lines
9.9 KiB
C
454 lines
9.9 KiB
C
/*
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* Builtin "git tag"
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*
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* Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
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* Carlos Rica <jasampler@gmail.com>
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* Based on git-tag.sh and mktag.c by Linus Torvalds.
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "refs.h"
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#include "tag.h"
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#include "run-command.h"
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static const char builtin_tag_usage[] =
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"git-tag [-n [<num>]] -l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d | -v] [-m <msg> | -F <file>] <tagname> [<head>]";
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static char signingkey[1000];
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static void launch_editor(const char *path, char **buffer, unsigned long *len)
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{
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const char *editor, *terminal;
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struct child_process child;
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const char *args[3];
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int fd;
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editor = getenv("GIT_EDITOR");
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if (!editor && editor_program)
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editor = editor_program;
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if (!editor)
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editor = getenv("VISUAL");
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if (!editor)
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editor = getenv("EDITOR");
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terminal = getenv("TERM");
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if (!editor && (!terminal || !strcmp(terminal, "dumb"))) {
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fprintf(stderr,
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"Terminal is dumb but no VISUAL nor EDITOR defined.\n"
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"Please supply the message using either -m or -F option.\n");
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exit(1);
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}
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if (!editor)
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editor = "vi";
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memset(&child, 0, sizeof(child));
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child.argv = args;
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args[0] = editor;
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args[1] = path;
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args[2] = NULL;
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if (run_command(&child))
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die("There was a problem with the editor %s.", editor);
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fd = open(path, O_RDONLY);
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if (fd < 0)
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die("could not open '%s': %s", path, strerror(errno));
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if (read_fd(fd, buffer, len)) {
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free(*buffer);
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die("could not read message file '%s': %s",
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path, strerror(errno));
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}
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close(fd);
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}
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struct tag_filter {
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const char *pattern;
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int lines;
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};
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#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
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static int show_reference(const char *refname, const unsigned char *sha1,
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int flag, void *cb_data)
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{
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struct tag_filter *filter = cb_data;
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if (!fnmatch(filter->pattern, refname, 0)) {
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int i;
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unsigned long size;
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enum object_type type;
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char *buf, *sp, *eol;
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size_t len;
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if (!filter->lines) {
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printf("%s\n", refname);
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return 0;
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}
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printf("%-15s ", refname);
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sp = buf = read_sha1_file(sha1, &type, &size);
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if (!buf)
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return 0;
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if (!size) {
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free(buf);
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return 0;
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}
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/* skip header */
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while (sp + 1 < buf + size &&
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!(sp[0] == '\n' && sp[1] == '\n'))
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sp++;
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/* only take up to "lines" lines, and strip the signature */
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for (i = 0, sp += 2;
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i < filter->lines && sp < buf + size &&
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prefixcmp(sp, PGP_SIGNATURE "\n");
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i++) {
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if (i)
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printf("\n ");
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eol = memchr(sp, '\n', size - (sp - buf));
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len = eol ? eol - sp : size - (sp - buf);
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fwrite(sp, len, 1, stdout);
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if (!eol)
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break;
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sp = eol + 1;
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}
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putchar('\n');
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free(buf);
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}
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return 0;
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}
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static int list_tags(const char *pattern, int lines)
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{
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struct tag_filter filter;
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if (pattern == NULL)
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pattern = "*";
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filter.pattern = pattern;
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filter.lines = lines;
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for_each_tag_ref(show_reference, (void *) &filter);
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return 0;
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}
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typedef int (*each_tag_name_fn)(const char *name, const char *ref,
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const unsigned char *sha1);
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static int for_each_tag_name(const char **argv, each_tag_name_fn fn)
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{
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const char **p;
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char ref[PATH_MAX];
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int had_error = 0;
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unsigned char sha1[20];
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for (p = argv; *p; p++) {
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if (snprintf(ref, sizeof(ref), "refs/tags/%s", *p)
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>= sizeof(ref)) {
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error("tag name too long: %.*s...", 50, *p);
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had_error = 1;
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continue;
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}
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if (!resolve_ref(ref, sha1, 1, NULL)) {
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error("tag '%s' not found.", *p);
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had_error = 1;
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continue;
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}
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if (fn(*p, ref, sha1))
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had_error = 1;
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}
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return had_error;
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}
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static int delete_tag(const char *name, const char *ref,
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const unsigned char *sha1)
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{
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if (delete_ref(ref, sha1))
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return 1;
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printf("Deleted tag '%s'\n", name);
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return 0;
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}
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static int verify_tag(const char *name, const char *ref,
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const unsigned char *sha1)
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{
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const char *argv_verify_tag[] = {"git-verify-tag",
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"-v", "SHA1_HEX", NULL};
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argv_verify_tag[2] = sha1_to_hex(sha1);
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if (run_command_v_opt(argv_verify_tag, 0))
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return error("could not verify the tag '%s'", name);
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return 0;
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}
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static ssize_t do_sign(char *buffer, size_t size, size_t max)
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{
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struct child_process gpg;
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const char *args[4];
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char *bracket;
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int len;
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if (!*signingkey) {
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if (strlcpy(signingkey, git_committer_info(1),
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sizeof(signingkey)) > sizeof(signingkey) - 1)
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return error("committer info too long.");
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bracket = strchr(signingkey, '>');
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if (bracket)
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bracket[1] = '\0';
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}
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memset(&gpg, 0, sizeof(gpg));
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gpg.argv = args;
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gpg.in = -1;
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gpg.out = -1;
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args[0] = "gpg";
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args[1] = "-bsau";
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args[2] = signingkey;
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args[3] = NULL;
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if (start_command(&gpg))
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return error("could not run gpg.");
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write_or_die(gpg.in, buffer, size);
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close(gpg.in);
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gpg.close_in = 0;
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len = read_in_full(gpg.out, buffer + size, max - size);
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finish_command(&gpg);
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if (len == max - size)
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return error("could not read the entire signature from gpg.");
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return size + len;
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}
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static const char tag_template[] =
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"\n"
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"#\n"
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"# Write a tag message\n"
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"#\n";
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static int git_tag_config(const char *var, const char *value)
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{
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if (!strcmp(var, "user.signingkey")) {
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if (!value)
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die("user.signingkey without value");
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if (strlcpy(signingkey, value, sizeof(signingkey))
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>= sizeof(signingkey))
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die("user.signingkey value too long");
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return 0;
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}
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return git_default_config(var, value);
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}
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#define MAX_SIGNATURE_LENGTH 1024
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/* message must be NULL or allocated, it will be reallocated and freed */
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static void create_tag(const unsigned char *object, const char *tag,
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char *message, int sign, unsigned char *result)
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{
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enum object_type type;
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char header_buf[1024], *buffer = NULL;
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int header_len, max_size;
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unsigned long size = 0;
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type = sha1_object_info(object, NULL);
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if (type <= OBJ_NONE)
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die("bad object type.");
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header_len = snprintf(header_buf, sizeof(header_buf),
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"object %s\n"
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"type %s\n"
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"tag %s\n"
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"tagger %s\n\n",
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sha1_to_hex(object),
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typename(type),
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tag,
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git_committer_info(1));
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if (header_len > sizeof(header_buf) - 1)
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die("tag header too big.");
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if (!message) {
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char *path;
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int fd;
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/* write the template message before editing: */
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path = xstrdup(git_path("TAG_EDITMSG"));
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fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
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if (fd < 0)
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die("could not create file '%s': %s",
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path, strerror(errno));
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write_or_die(fd, tag_template, strlen(tag_template));
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close(fd);
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launch_editor(path, &buffer, &size);
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unlink(path);
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free(path);
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}
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else {
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buffer = message;
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size = strlen(message);
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}
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size = stripspace(buffer, size, 1);
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if (!message && !size)
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die("no tag message?");
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/* insert the header and add the '\n' if needed: */
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max_size = header_len + size + (sign ? MAX_SIGNATURE_LENGTH : 0) + 1;
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buffer = xrealloc(buffer, max_size);
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if (size)
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buffer[size++] = '\n';
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memmove(buffer + header_len, buffer, size);
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memcpy(buffer, header_buf, header_len);
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size += header_len;
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if (sign) {
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size = do_sign(buffer, size, max_size);
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if (size < 0)
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die("unable to sign the tag");
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}
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if (write_sha1_file(buffer, size, tag_type, result) < 0)
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die("unable to write tag file");
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free(buffer);
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}
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int cmd_tag(int argc, const char **argv, const char *prefix)
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{
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unsigned char object[20], prev[20];
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int annotate = 0, sign = 0, force = 0, lines = 0;
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char *message = NULL;
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char ref[PATH_MAX];
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const char *object_ref, *tag;
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int i;
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struct ref_lock *lock;
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git_config(git_tag_config);
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (arg[0] != '-')
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break;
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if (!strcmp(arg, "-a")) {
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annotate = 1;
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continue;
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}
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if (!strcmp(arg, "-s")) {
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annotate = 1;
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sign = 1;
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continue;
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}
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if (!strcmp(arg, "-f")) {
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force = 1;
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continue;
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}
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if (!strcmp(arg, "-n")) {
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if (i + 1 == argc || *argv[i + 1] == '-')
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/* no argument */
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lines = 1;
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else
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lines = isdigit(*argv[++i]) ?
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atoi(argv[i]) : 1;
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continue;
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}
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if (!strcmp(arg, "-m")) {
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annotate = 1;
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i++;
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if (i == argc)
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die("option -m needs an argument.");
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if (message)
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die("only one -F or -m option is allowed.");
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message = xstrdup(argv[i]);
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continue;
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}
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if (!strcmp(arg, "-F")) {
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unsigned long len;
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int fd;
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annotate = 1;
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i++;
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if (i == argc)
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die("option -F needs an argument.");
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if (message)
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die("only one -F or -m option is allowed.");
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if (!strcmp(argv[i], "-"))
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fd = 0;
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else {
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fd = open(argv[i], O_RDONLY);
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if (fd < 0)
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die("could not open '%s': %s",
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argv[i], strerror(errno));
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}
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len = 1024;
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message = xmalloc(len);
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if (read_fd(fd, &message, &len)) {
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free(message);
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die("cannot read %s", argv[i]);
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}
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continue;
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}
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if (!strcmp(arg, "-u")) {
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annotate = 1;
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sign = 1;
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i++;
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if (i == argc)
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die("option -u needs an argument.");
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if (strlcpy(signingkey, argv[i], sizeof(signingkey))
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>= sizeof(signingkey))
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die("argument to option -u too long");
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continue;
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}
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if (!strcmp(arg, "-l"))
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return list_tags(argv[i + 1], lines);
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if (!strcmp(arg, "-d"))
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return for_each_tag_name(argv + i + 1, delete_tag);
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if (!strcmp(arg, "-v"))
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return for_each_tag_name(argv + i + 1, verify_tag);
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usage(builtin_tag_usage);
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}
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if (i == argc) {
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if (annotate)
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usage(builtin_tag_usage);
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return list_tags(NULL, lines);
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}
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tag = argv[i++];
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object_ref = i < argc ? argv[i] : "HEAD";
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if (i + 1 < argc)
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die("too many params");
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if (get_sha1(object_ref, object))
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die("Failed to resolve '%s' as a valid ref.", object_ref);
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if (snprintf(ref, sizeof(ref), "refs/tags/%s", tag) > sizeof(ref) - 1)
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die("tag name too long: %.*s...", 50, tag);
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if (check_ref_format(ref))
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die("'%s' is not a valid tag name.", tag);
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if (!resolve_ref(ref, prev, 1, NULL))
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hashclr(prev);
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else if (!force)
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die("tag '%s' already exists", tag);
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if (annotate)
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create_tag(object, tag, message, sign, object);
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lock = lock_any_ref_for_update(ref, prev, 0);
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if (!lock)
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die("%s: cannot lock the ref", ref);
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if (write_ref_sha1(lock, object, NULL) < 0)
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die("%s: cannot update the ref", ref);
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return 0;
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}
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