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git/builtin/tag.c

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/*
* Builtin "git tag"
*
* Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
* Carlos Rica <jasampler@gmail.com>
* Based on git-tag.sh and mktag.c by Linus Torvalds.
*/
#include "builtin.h"
#include "advice.h"
#include "config.h"
#include "editor.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "refs.h"
#include "object-name.h"
#include "object-store-ll.h"
#include "path.h"
#include "tag.h"
#include "parse-options.h"
#include "diff.h"
#include "revision.h"
#include "gpg-interface.h"
#include "oid-array.h"
#include "column.h"
#include "ref-filter.h"
#include "date.h"
#include "write-or-die.h"
#include "object-file-convert.h"
#include "trailer.h"
static const char * const git_tag_usage[] = {
N_("git tag [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>] [-e]\n"
" [(--trailer <token>[(=|:)<value>])...]\n"
" <tagname> [<commit> | <object>]"),
N_("git tag -d <tagname>..."),
N_("git tag [-n[<num>]] -l [--contains <commit>] [--no-contains <commit>]\n"
" [--points-at <object>] [--column[=<options>] | --no-column]\n"
" [--create-reflog] [--sort=<key>] [--format=<format>]\n"
" [--merged <commit>] [--no-merged <commit>] [<pattern>...]"),
N_("git tag -v [--format=<format>] <tagname>..."),
NULL
};
static unsigned int colopts;
static int force_sign_annotate;
static int config_sign_tag = -1; /* unspecified */
static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
struct ref_format *format)
{
char *to_free = NULL;
if (filter->lines == -1)
filter->lines = 0;
if (!format->format) {
if (filter->lines) {
to_free = xstrfmt("%s %%(contents:lines=%d)",
"%(align:15)%(refname:lstrip=2)%(end)",
filter->lines);
format->format = to_free;
} else
format->format = "%(refname:lstrip=2)";
}
if (verify_ref_format(format))
die(_("unable to parse format string"));
filter->with_commit_tag_algo = 1;
filter_and_format_refs(filter, FILTER_REFS_TAGS, sorting, format);
free(to_free);
return 0;
}
typedef int (*each_tag_name_fn)(const char *name, const char *ref,
const struct object_id *oid, void *cb_data);
static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
void *cb_data)
{
const char **p;
struct strbuf ref = STRBUF_INIT;
int had_error = 0;
struct object_id oid;
for (p = argv; *p; p++) {
strbuf_reset(&ref);
strbuf_addf(&ref, "refs/tags/%s", *p);
if (refs_read_ref(get_main_ref_store(the_repository), ref.buf, &oid)) {
error(_("tag '%s' not found."), *p);
had_error = 1;
continue;
}
if (fn(*p, ref.buf, &oid, cb_data))
had_error = 1;
}
strbuf_release(&ref);
return had_error;
}
static int collect_tags(const char *name UNUSED, const char *ref,
const struct object_id *oid, void *cb_data)
{
struct string_list *ref_list = cb_data;
string_list_append(ref_list, ref);
ref_list->items[ref_list->nr - 1].util = oiddup(oid);
return 0;
}
static int delete_tags(const char **argv)
{
int result;
struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
struct string_list_item *item;
result = for_each_tag_name(argv, collect_tags, (void *)&refs_to_delete);
if (refs_delete_refs(get_main_ref_store(the_repository), NULL, &refs_to_delete, REF_NO_DEREF))
result = 1;
for_each_string_list_item(item, &refs_to_delete) {
const char *name = item->string;
struct object_id *oid = item->util;
if (!refs_ref_exists(get_main_ref_store(the_repository), name))
printf(_("Deleted tag '%s' (was %s)\n"),
item->string + 10,
repo_find_unique_abbrev(the_repository, oid, DEFAULT_ABBREV));
free(oid);
}
string_list_clear(&refs_to_delete, 0);
return result;
}
static int verify_tag(const char *name, const char *ref UNUSED,
const struct object_id *oid, void *cb_data)
{
int flags;
struct ref_format *format = cb_data;
flags = GPG_VERIFY_VERBOSE;
if (format->format)
flags = GPG_VERIFY_OMIT_STATUS;
if (gpg_verify_tag(oid, name, flags))
return -1;
if (format->format)
pretty_print_ref(name, oid, format);
return 0;
}
static int do_sign(struct strbuf *buffer, struct object_id **compat_oid,
struct object_id *compat_oid_buf)
{
const struct git_hash_algo *compat = the_repository->compat_hash_algo;
struct strbuf sig = STRBUF_INIT, compat_sig = STRBUF_INIT;
struct strbuf compat_buf = STRBUF_INIT;
const char *keyid = get_signing_key();
int ret = -1;
if (sign_buffer(buffer, &sig, keyid))
return -1;
if (compat) {
const struct git_hash_algo *algo = the_repository->hash_algo;
if (convert_object_file(&compat_buf, algo, compat,
buffer->buf, buffer->len, OBJ_TAG, 1))
goto out;
if (sign_buffer(&compat_buf, &compat_sig, keyid))
goto out;
add_header_signature(&compat_buf, &sig, algo);
strbuf_addbuf(&compat_buf, &compat_sig);
hash_object_file(compat, compat_buf.buf, compat_buf.len,
OBJ_TAG, compat_oid_buf);
*compat_oid = compat_oid_buf;
}
if (compat_sig.len)
add_header_signature(buffer, &compat_sig, compat);
strbuf_addbuf(buffer, &sig);
ret = 0;
out:
strbuf_release(&sig);
strbuf_release(&compat_sig);
strbuf_release(&compat_buf);
return ret;
}
static const char tag_template[] =
N_("\nWrite a message for tag:\n %s\n"
"Lines starting with '%s' will be ignored.\n");
static const char tag_template_nocleanup[] =
N_("\nWrite a message for tag:\n %s\n"
"Lines starting with '%s' will be kept; you may remove them"
" yourself if you want to.\n");
static int git_tag_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
if (!strcmp(var, "tag.gpgsign")) {
config_sign_tag = git_config_bool(var, value);
return 0;
}
if (!strcmp(var, "tag.sort")) {
if (!value)
return config_error_nonbool(var);
string_list_append(cb, value);
return 0;
}
if (!strcmp(var, "tag.forcesignannotated")) {
force_sign_annotate = git_config_bool(var, value);
return 0;
}
if (starts_with(var, "column."))
return git_column_config(var, value, "tag", &colopts);
if (git_color_config(var, value, cb) < 0)
return -1;
return git_default_config(var, value, ctx, cb);
}
static void write_tag_body(int fd, const struct object_id *oid)
{
unsigned long size;
enum object_type type;
char *buf, *sp, *orig;
struct strbuf payload = STRBUF_INIT;
struct strbuf signature = STRBUF_INIT;
orig = buf = repo_read_object_file(the_repository, oid, &type, &size);
if (!buf)
return;
if (parse_signature(buf, size, &payload, &signature)) {
buf = payload.buf;
size = payload.len;
}
/* skip header */
sp = strstr(buf, "\n\n");
if (!sp || !size || type != OBJ_TAG) {
free(buf);
return;
}
sp += 2; /* skip the 2 LFs */
write_or_die(fd, sp, buf + size - sp);
free(orig);
strbuf_release(&payload);
strbuf_release(&signature);
}
static int build_tag_object(struct strbuf *buf, int sign, struct object_id *result)
{
struct object_id *compat_oid = NULL, compat_oid_buf;
if (sign && do_sign(buf, &compat_oid, &compat_oid_buf) < 0)
return error(_("unable to sign the tag"));
if (write_object_file_flags(buf->buf, buf->len, OBJ_TAG, result,
compat_oid, 0) < 0)
return error(_("unable to write tag file"));
return 0;
}
struct create_tag_options {
unsigned int message_given:1;
unsigned int use_editor:1;
unsigned int sign;
enum {
CLEANUP_NONE,
CLEANUP_SPACE,
CLEANUP_ALL
} cleanup_mode;
};
static const char message_advice_nested_tag[] =
N_("You have created a nested tag. The object referred to by your new tag is\n"
"already a tag. If you meant to tag the object that it points to, use:\n"
"\n"
"\tgit tag -f %s %s^{}");
static void create_tag(const struct object_id *object, const char *object_ref,
const char *tag,
struct strbuf *buf, struct create_tag_options *opt,
struct object_id *prev, struct object_id *result,
struct strvec *trailer_args, char *path)
{
enum object_type type;
struct strbuf header = STRBUF_INIT;
int should_edit;
type = oid_object_info(the_repository, object, NULL);
if (type <= OBJ_NONE)
die(_("bad object type."));
if (type == OBJ_TAG)
advise_if_enabled(ADVICE_NESTED_TAG, _(message_advice_nested_tag),
tag, object_ref);
strbuf_addf(&header,
"object %s\n"
"type %s\n"
"tag %s\n"
"tagger %s\n\n",
oid_to_hex(object),
type_name(type),
tag,
git_committer_info(IDENT_STRICT));
should_edit = opt->use_editor || !opt->message_given;
if (should_edit || trailer_args->nr) {
int fd;
/* write the template message before editing: */
fd = xopen(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
if (opt->message_given && buf->len) {
strbuf_complete(buf, '\n');
write_or_die(fd, buf->buf, buf->len);
strbuf_reset(buf);
} else if (!is_null_oid(prev)) {
write_tag_body(fd, prev);
} else {
struct strbuf buf = STRBUF_INIT;
strbuf_addch(&buf, '\n');
if (opt->cleanup_mode == CLEANUP_ALL)
strbuf_commented_addf(&buf, comment_line_str,
_(tag_template), tag, comment_line_str);
else
strbuf_commented_addf(&buf, comment_line_str,
_(tag_template_nocleanup), tag, comment_line_str);
write_or_die(fd, buf.buf, buf.len);
strbuf_release(&buf);
}
close(fd);
if (trailer_args->nr && amend_file_with_trailers(path, trailer_args))
die(_("unable to pass trailers to --trailers"));
if (should_edit) {
if (launch_editor(path, buf, NULL)) {
fprintf(stderr,
_("Please supply the message using either -m or -F option.\n"));
exit(1);
}
} else if (trailer_args->nr) {
strbuf_reset(buf);
if (strbuf_read_file(buf, path, 0) < 0)
die_errno(_("failed to read '%s'"), path);
}
}
if (opt->cleanup_mode != CLEANUP_NONE)
strbuf_stripspace(buf,
opt->cleanup_mode == CLEANUP_ALL ? comment_line_str : NULL);
if (!opt->message_given && !buf->len)
die(_("no tag message?"));
strbuf_insert(buf, 0, header.buf, header.len);
strbuf_release(&header);
if (build_tag_object(buf, opt->sign, result) < 0) {
if (path)
fprintf(stderr, _("The tag message has been left in %s\n"),
path);
exit(128);
}
}
static void create_reflog_msg(const struct object_id *oid, struct strbuf *sb)
{
enum object_type type;
struct commit *c;
char *buf;
unsigned long size;
int subject_len = 0;
const char *subject_start;
char *rla = getenv("GIT_REFLOG_ACTION");
if (rla) {
strbuf_addstr(sb, rla);
} else {
strbuf_addstr(sb, "tag: tagging ");
strbuf_add_unique_abbrev(sb, oid, DEFAULT_ABBREV);
}
strbuf_addstr(sb, " (");
type = oid_object_info(the_repository, oid, NULL);
switch (type) {
default:
strbuf_addstr(sb, "object of unknown type");
break;
case OBJ_COMMIT:
if ((buf = repo_read_object_file(the_repository, oid, &type, &size))) {
subject_len = find_commit_subject(buf, &subject_start);
strbuf_insert(sb, sb->len, subject_start, subject_len);
} else {
strbuf_addstr(sb, "commit object");
}
free(buf);
if ((c = lookup_commit_reference(the_repository, oid)))
strbuf_addf(sb, ", %s", show_date(c->date, 0, DATE_MODE(SHORT)));
break;
case OBJ_TREE:
strbuf_addstr(sb, "tree object");
break;
case OBJ_BLOB:
strbuf_addstr(sb, "blob object");
break;
case OBJ_TAG:
strbuf_addstr(sb, "other tag object");
break;
}
strbuf_addch(sb, ')');
}
struct msg_arg {
int given;
struct strbuf buf;
};
static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
{
struct msg_arg *msg = opt->value;
BUG_ON_OPT_NEG(unset);
if (!arg)
return -1;
if (msg->buf.len)
strbuf_addstr(&(msg->buf), "\n\n");
strbuf_addstr(&(msg->buf), arg);
msg->given = 1;
return 0;
}
static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
{
if (name[0] == '-')
return -1;
strbuf_reset(sb);
strbuf_addf(sb, "refs/tags/%s", name);
return check_refname_format(sb->buf, 0);
}
int cmd_tag(int argc, const char **argv, const char *prefix)
{
struct strbuf buf = STRBUF_INIT;
struct strbuf ref = STRBUF_INIT;
struct strbuf reflog_msg = STRBUF_INIT;
struct object_id object, prev;
const char *object_ref, *tag;
struct create_tag_options opt;
char *cleanup_arg = NULL;
int create_reflog = 0;
int annotate = 0, force = 0;
int cmdmode = 0, create_tag_object = 0;
char *msgfile = NULL;
const char *keyid = NULL;
struct msg_arg msg = { .buf = STRBUF_INIT };
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
struct ref_filter filter = REF_FILTER_INIT;
struct ref_sorting *sorting;
struct string_list sorting_options = STRING_LIST_INIT_DUP;
struct ref_format format = REF_FORMAT_INIT;
struct strvec trailer_args = STRVEC_INIT;
int icase = 0;
int edit_flag = 0;
struct option options[] = {
OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
{ OPTION_INTEGER, 'n', NULL, &filter.lines, N_("n"),
N_("print <n> lines of each tag message"),
PARSE_OPT_OPTARG, NULL, 1 },
OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
OPT_GROUP(N_("Tag creation options")),
OPT_BOOL('a', "annotate", &annotate,
N_("annotated tag, needs a message")),
OPT_CALLBACK_F('m', "message", &msg, N_("message"),
N_("tag message"), PARSE_OPT_NONEG, parse_msg_arg),
OPT_FILENAME('F', "file", &msgfile, N_("read message from file")),
OPT_PASSTHRU_ARGV(0, "trailer", &trailer_args, N_("trailer"),
N_("add custom trailer(s)"), PARSE_OPT_NONEG),
OPT_BOOL('e', "edit", &edit_flag, N_("force edit of tag message")),
OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
OPT_CLEANUP(&cleanup_arg),
OPT_STRING('u', "local-user", &keyid, N_("key-id"),
N_("use another key to sign the tag")),
OPT__FORCE(&force, N_("replace the tag if exists"), 0),
OPT_BOOL(0, "create-reflog", &create_reflog, N_("create a reflog")),
OPT_GROUP(N_("Tag listing options")),
OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
OPT_CONTAINS(&filter.with_commit, N_("print only tags that contain the commit")),
OPT_NO_CONTAINS(&filter.no_commit, N_("print only tags that don't contain the commit")),
OPT_WITH(&filter.with_commit, N_("print only tags that contain the commit")),
OPT_WITHOUT(&filter.no_commit, N_("print only tags that don't contain the commit")),
OPT_MERGED(&filter, N_("print only tags that are merged")),
OPT_NO_MERGED(&filter, N_("print only tags that are not merged")),
OPT_BOOL(0, "omit-empty", &format.array_opts.omit_empty,
N_("do not output a newline after empty formatted refs")),
OPT_REF_SORT(&sorting_options),
{
OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
N_("print only tags of the object"), PARSE_OPT_LASTARG_DEFAULT,
parse_opt_object_name, (intptr_t) "HEAD"
},
OPT_STRING( 0 , "format", &format.format, N_("format"),
N_("format to use for the output")),
OPT__COLOR(&format.use_color, N_("respect format colors")),
OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
OPT_END()
};
int ret = 0;
const char *only_in_list = NULL;
char *path = NULL;
setup_ref_filter_porcelain_msg();
/*
* Try to set sort keys from config. If config does not set any,
* fall back on default (refname) sorting.
*/
git_config(git_tag_config, &sorting_options);
if (!sorting_options.nr)
string_list_append(&sorting_options, "refname");
memset(&opt, 0, sizeof(opt));
filter.lines = -1;
opt.sign = -1;
argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0);
if (!cmdmode) {
if (argc == 0)
cmdmode = 'l';
else if (filter.with_commit || filter.no_commit ||
filter.reachable_from || filter.unreachable_from ||
filter.points_at.nr || filter.lines != -1)
cmdmode = 'l';
}
if (cmdmode == 'l')
setup_auto_pager("tag", 1);
if (opt.sign == -1)
opt.sign = cmdmode ? 0 : config_sign_tag > 0;
if (keyid) {
opt.sign = 1;
set_signing_key(keyid);
}
create_tag_object = (opt.sign || annotate || msg.given || msgfile ||
edit_flag || trailer_args.nr);
if ((create_tag_object || force) && (cmdmode != 0))
usage_with_options(git_tag_usage, options);
finalize_colopts(&colopts, -1);
if (cmdmode == 'l' && filter.lines != -1) {
if (explicitly_enable_column(colopts))
die(_("options '%s' and '%s' cannot be used together"), "--column", "-n");
colopts = 0;
}
sorting = ref_sorting_options(&sorting_options);
ref_sorting_set_sort_flags_all(sorting, REF_SORTING_ICASE, icase);
filter.ignore_case = icase;
if (cmdmode == 'l') {
if (column_active(colopts)) {
struct column_options copts;
memset(&copts, 0, sizeof(copts));
copts.padding = 2;
if (run_column_filter(colopts, &copts))
die(_("could not start 'git column'"));
}
filter.name_patterns = argv;
ret = list_tags(&filter, sorting, &format);
if (column_active(colopts))
stop_column_filter();
goto cleanup;
}
if (filter.lines != -1)
only_in_list = "-n";
else if (filter.with_commit)
only_in_list = "--contains";
else if (filter.no_commit)
only_in_list = "--no-contains";
else if (filter.points_at.nr)
only_in_list = "--points-at";
else if (filter.reachable_from)
only_in_list = "--merged";
else if (filter.unreachable_from)
only_in_list = "--no-merged";
if (only_in_list)
die(_("the '%s' option is only allowed in list mode"), only_in_list);
if (cmdmode == 'd') {
ret = delete_tags(argv);
goto cleanup;
}
if (cmdmode == 'v') {
if (format.format && verify_ref_format(&format))
usage_with_options(git_tag_usage, options);
ret = for_each_tag_name(argv, verify_tag, &format);
goto cleanup;
}
if (msg.given || msgfile) {
if (msg.given && msgfile)
die(_("options '%s' and '%s' cannot be used together"), "-F", "-m");
if (msg.given)
strbuf_addbuf(&buf, &(msg.buf));
else {
if (!strcmp(msgfile, "-")) {
if (strbuf_read(&buf, 0, 1024) < 0)
die_errno(_("cannot read '%s'"), msgfile);
} else {
if (strbuf_read_file(&buf, msgfile, 1024) < 0)
die_errno(_("could not open or read '%s'"),
msgfile);
}
}
}
tag = argv[0];
object_ref = argc == 2 ? argv[1] : "HEAD";
if (argc > 2)
die(_("too many arguments"));
if (repo_get_oid(the_repository, object_ref, &object))
die(_("Failed to resolve '%s' as a valid ref."), object_ref);
if (strbuf_check_tag_ref(&ref, tag))
die(_("'%s' is not a valid tag name."), tag);
if (refs_read_ref(get_main_ref_store(the_repository), ref.buf, &prev))
oidclr(&prev, the_repository->hash_algo);
else if (!force)
die(_("tag '%s' already exists"), tag);
opt.message_given = msg.given || msgfile;
opt.use_editor = edit_flag;
if (!cleanup_arg || !strcmp(cleanup_arg, "strip"))
opt.cleanup_mode = CLEANUP_ALL;
else if (!strcmp(cleanup_arg, "verbatim"))
opt.cleanup_mode = CLEANUP_NONE;
else if (!strcmp(cleanup_arg, "whitespace"))
opt.cleanup_mode = CLEANUP_SPACE;
else
die(_("Invalid cleanup mode %s"), cleanup_arg);
create_reflog_msg(&object, &reflog_msg);
if (create_tag_object) {
if (force_sign_annotate && !annotate)
opt.sign = 1;
path = git_pathdup("TAG_EDITMSG");
create_tag(&object, object_ref, tag, &buf, &opt, &prev, &object,
&trailer_args, path);
}
transaction = ref_store_transaction_begin(get_main_ref_store(the_repository),
&err);
if (!transaction ||
ref_transaction_update(transaction, ref.buf, &object, &prev,
NULL, NULL,
create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
reflog_msg.buf, &err) ||
ref_transaction_commit(transaction, &err)) {
if (path)
fprintf(stderr,
_("The tag message has been left in %s\n"),
path);
die("%s", err.buf);
}
if (path) {
unlink_or_warn(path);
free(path);
}
ref_transaction_free(transaction);
if (force && !is_null_oid(&prev) && !oideq(&prev, &object))
printf(_("Updated tag '%s' (was %s)\n"), tag,
repo_find_unique_abbrev(the_repository, &prev, DEFAULT_ABBREV));
cleanup:
ref_sorting_release(sorting);
ref_filter_clear(&filter);
strbuf_release(&buf);
strbuf_release(&ref);
strbuf_release(&reflog_msg);
strbuf_release(&msg.buf);
strbuf_release(&err);
strvec_clear(&trailer_args);
free(msgfile);
return ret;
}
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