A more or less straight-forward port of git-tag.sh to C.
Signed-off-by: Kristian Høgsberg <krh@xxxxxxxxxx>
---
There's two behavioral changes here: git tag with no arguments behaves like
git branch with no arguments; it lists all tags. The other change is
an empty line in the tag message template to make it look more like the
commit message template.
cheers,
Kristian
Makefile | 3 +-
builtin-tag.c | 364 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
builtin.h | 1 +
git-tag.sh | 183 -----------------------------
git.c | 1 +
5 files changed, 368 insertions(+), 184 deletions(-)
create mode 100644 builtin-tag.c
delete mode 100755 git-tag.sh
diff --git a/Makefile b/Makefile
index 0f75955..bb1bed1 100644
--- a/Makefile
+++ b/Makefile
@@ -205,7 +205,7 @@ SCRIPT_SH = \
git-pull.sh git-rebase.sh \
git-repack.sh git-request-pull.sh git-reset.sh \
git-sh-setup.sh \
- git-tag.sh git-verify-tag.sh \
+ git-verify-tag.sh \
git-am.sh \
git-merge.sh git-merge-stupid.sh git-merge-octopus.sh \
git-merge-resolve.sh git-merge-ours.sh \
@@ -372,6 +372,7 @@ BUILTIN_OBJS = \
builtin-show-branch.o \
builtin-stripspace.o \
builtin-symbolic-ref.o \
+ builtin-tag.o \
builtin-tar-tree.o \
builtin-unpack-objects.o \
builtin-update-index.o \
diff --git a/builtin-tag.c b/builtin-tag.c
new file mode 100644
index 0000000..06eafc0
--- /dev/null
+++ b/builtin-tag.c
@@ -0,0 +1,364 @@
+/*
+ * Builtin "git tag"
+ *
+ * Copyright (c) 2007 Kristian Høgsberg <krh@xxxxxxxxxx>
+ * Based on git-tag.sh and mktag.c by Linus Torvalds.
+ */
+
+#include "cache.h"
+#include "refs.h"
+#include "commit.h"
+#include "builtin.h"
+#include "tag.h"
+#include "run-command.h"
+
+static const char builtin_tag_usage[] =
+ "git-tag [-n [<num>]] -l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d | -v] [-m <msg>] <tagname> [<head>]";
+
+static char signingkey[1000];
+
+static int launch_editor(const char *path, const char *template,
+ char *buffer, size_t size)
+{
+ struct child_process child;
+ const char *editor;
+ const char *args[3];
+ char *eol;
+ int len, fd, blank_lines, i, j;
+
+ fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0644);
+ if (fd < 0)
+ die("could not create file %s.", path);
+
+ len = strlen(template);
+ write_or_die(fd, template, len);
+ close(fd);
+
+ editor = getenv("VISUAL");
+ if (!editor)
+ editor = getenv("EDITOR");
+ if (!editor)
+ editor = "vi";
+
+ memset(&child, 0, sizeof(child));
+ child.argv = args;
+ args[0] = editor;
+ args[1] = path;
+ args[2] = NULL;
+
+ if (run_command(&child))
+ die("could not launch editor %s.", editor);
+
+ fd = open(path, O_RDONLY, 0644);
+ if (fd == -1)
+ die("could not read %s.", path);
+ len = read_in_full(fd, buffer, size);
+ if (len < 0)
+ die("failed to read '%s', %m", path);
+ close(fd);
+
+ blank_lines = 1;
+ for (i = 0, j = 0; i < len; i++) {
+ if (blank_lines > 0 && buffer[i] == '#') {
+ eol = strchr(buffer + i, '\n');
+ if (!eol)
+ break;
+
+ i = eol - buffer;
+ continue;
+ }
+
+ if (buffer[i] == '\n') {
+ blank_lines++;
+ if (blank_lines > 1)
+ continue;
+ } else {
+ if (blank_lines > 2)
+ buffer[j++] = '\n';
+ blank_lines = 0;
+ }
+
+ buffer[j++] = buffer[i];
+ }
+
+ if (buffer[j - 1] != '\n')
+ buffer[j++] = '\n';
+
+ unlink(path);
+
+ return j;
+}
+
+static int show_reference(const char *refname, const unsigned char *sha1,
+ int flag, void *cb_data)
+{
+ const char *pattern = cb_data;
+
+ if (pattern == NULL || !fnmatch(pattern, refname, 0))
+ printf("%s\n", refname);
+
+ return 0;
+}
+
+static int list_tags(const char *pattern)
+{
+ for_each_tag_ref(show_reference, (void *) pattern);
+
+ return 0;
+}
+
+
+static int delete_tags(const char **argv)
+{
+ const char **p;
+ char ref[PATH_MAX];
+ int had_error = 0;
+ unsigned char sha1[20];
+
+ for (p = argv; *p; p++) {
+ if (snprintf(ref, sizeof ref, "refs/tags/%s", *p) > sizeof ref)
+ die("tag name '%s' too long.", *p);
+ if (!resolve_ref(ref, sha1, 1, NULL)) {
+ fprintf(stderr, "tag '%s' not found.\n", *p);
+ had_error = 1;
+ continue;
+ }
+
+ if (!delete_ref(ref, sha1))
+ printf("Deleted tag '%s'\n", *p);
+ }
+
+ return had_error;
+}
+
+static int verify_tags(const char **argv)
+{
+ const char **p;
+ char ref[PATH_MAX];
+ int had_error = 0;
+ unsigned char sha1[20];
+
+ for (p = argv; *p; p++) {
+ if (snprintf(ref, sizeof ref, "refs/tags/%s", *p) > sizeof ref)
+ die("tag name '%s' too long.", *p);
+
+ if (!resolve_ref(ref, sha1, 1, NULL)) {
+ fprintf(stderr, "tag '%s' not found.\n", *p);
+ had_error = 1;
+ continue;
+ }
+
+ printf("FIXME: verify tag '%s'\n", *p);
+ }
+
+ return had_error;
+}
+
+static int do_sign(char *buffer, size_t size, size_t max)
+{
+ struct child_process gpg;
+ const char *args[5];
+ char *bracket;
+ int len;
+
+ if (signingkey[0] == '\0') {
+ strlcpy(signingkey, git_committer_info(1), sizeof signingkey);
+ bracket = strchr(signingkey, '>');
+ if (bracket)
+ bracket[1] = '\0';
+ }
+
+ memset(&gpg, 0, sizeof(gpg));
+ gpg.argv = args;
+ gpg.in = -1;
+ gpg.out = -1;
+ args[0] = "gpg";
+ args[1] = "-bsa";
+ args[2] = "-u";
+ args[3] = signingkey;
+ args[4] = NULL;
+
+ if (start_command(&gpg))
+ die("could not run gpg.");
+
+ write_or_die(gpg.in, buffer, size);
+ close(gpg.in);
+ gpg.close_in = 0;
+ len = read_in_full(gpg.out, buffer + size, max - size);
+
+ finish_command(&gpg);
+
+ return size + len;
+}
+
+static const char tag_template[] =
+ "\n"
+ "#\n"
+ "# Write a tag message\n"
+ "#\n";
+
+int git_tag_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "user.signingkey")) {
+ if (!value)
+ die("user.signingkey without value");
+ strlcpy(signingkey, value, sizeof signingkey);
+ return 0;
+ }
+
+ return git_default_config(var, value);
+}
+
+int cmd_tag(int argc, const char **argv, const char *prefix)
+{
+ char buffer[4096];
+ unsigned char object[20], prev[20], result[20];
+ int annotate = 0, is_signed = 0, force = 0, lines = 0;
+ const char *message = NULL;
+ char ref[PATH_MAX];
+ const char *object_ref, *tag;
+ int i, body, header, total, fd;
+ enum object_type type;
+ struct ref_lock *lock;
+
+ git_config(git_tag_config);
+
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+
+ if (arg[0] != '-')
+ break;
+ if (!strcmp(arg, "-a")) {
+ annotate = 1;
+ continue;
+ }
+ if (!strcmp(arg, "-s")) {
+ annotate = 1;
+ is_signed = 1;
+ continue;
+ }
+ if (!strcmp(arg, "-f")) {
+ force = 1;
+ continue;
+ }
+ if (!strcmp(arg, "-n")) {
+ if (i + 1 == argc || *argv[i + 1] == '-')
+ /* no argument */
+ lines = 1;
+ else
+ /* FIXME, fallback to 1 on invalid integer */
+ lines = atoi(argv[i + 1]);
+ continue;
+ }
+ if (!strcmp(arg, "-m")) {
+ annotate = 1;
+ i++;
+ if (i == argc)
+ die("option -m needs an argument.");
+ message = argv[i];
+ continue;
+ }
+ if (!strcmp(arg, "-F")) {
+ annotate = 1;
+ i++;
+ if (i == argc)
+ die("option -F needs an argument.");
+
+ fd = open(argv[i], O_RDONLY);
+ if (fd < 0)
+ die("cannot open %s", argv[1]);
+
+ message = xmalloc(4096);
+ if (read_in_full(fd, (char *) message, 4096) < 0)
+ die("cannot read %s", argv[1]);
+ continue;
+ }
+ if (!strcmp(arg, "-u")) {
+ annotate = 1;
+ is_signed = 1;
+ i++;
+ if (i == argc)
+ die("option -u needs an argument.");
+ strlcpy(signingkey, argv[i], sizeof signingkey);
+ continue;
+ }
+ if (!strcmp(arg, "-l")) {
+ return list_tags(argv[i + 1]);
+ }
+ if (!strcmp(arg, "-d")) {
+ return delete_tags(argv + i + 1);
+ }
+ if (!strcmp(arg, "-v")) {
+ return verify_tags(argv + i + 1);
+ }
+ usage(builtin_tag_usage);
+ }
+
+ if (i == argc)
+ return list_tags(NULL);
+ tag = argv[i++];
+
+ if (i < argc)
+ object_ref = argv[i];
+ else
+ object_ref = "HEAD";
+
+ if (get_sha1(object_ref, object))
+ die("Failed to resolve '%s' as a valid ref.", object_ref);
+
+ if (snprintf(ref, sizeof ref, "refs/tags/%s", tag) > sizeof ref)
+ die("tag '%s' too long.", tag);
+ if (check_ref_format(ref))
+ die("'%s' is not a valid tag name.", tag);
+ if (resolve_ref(ref, prev, 1, NULL)) {
+ if (!force)
+ die("tag '%s' already exists", tag);
+ } else {
+ hashclr(prev);
+ }
+
+ type = sha1_object_info(object, NULL);
+ if (type <= 0)
+ die("bad object type.");
+
+ header = snprintf(buffer, sizeof buffer,
+ "object %s\n"
+ "type %s\n"
+ "tag %s\n"
+ "tagger %s\n\n",
+ sha1_to_hex(object),
+ typename(type),
+ tag,
+ git_committer_info(1));
+
+ if (annotate && message == NULL)
+ body = launch_editor(git_path("TAGMSG"), tag_template,
+ buffer + header, sizeof buffer - header);
+ else if (annotate)
+ body = snprintf(buffer + header, sizeof buffer - header,
+ "%s\n", message);
+ else
+ body = 0;
+
+ if (annotate && body == 0)
+ die("no tag message?");
+
+ if (header + body > sizeof buffer)
+ die("tag message too big.");
+
+ if (is_signed)
+ total = do_sign(buffer, header + body, sizeof buffer);
+ else
+ total = header + body;
+
+ if (write_sha1_file(buffer, total, tag_type, result) < 0)
+ die("unable to write tag file");
+
+ lock = lock_any_ref_for_update(ref, prev, 0);
+ if (!lock)
+ die("%s: cannot lock the ref", ref);
+ if (write_ref_sha1(lock, result, NULL) < 0)
+ die("%s: cannot update the ref", ref);
+
+ return 0;
+}
diff --git a/builtin.h b/builtin.h
index 39290d1..91166e1 100644
--- a/builtin.h
+++ b/builtin.h
@@ -72,6 +72,7 @@ extern int cmd_show(int argc, const char **argv, const char *prefix);
extern int cmd_show_branch(int argc, const char **argv, const char *prefix);
extern int cmd_stripspace(int argc, const char **argv, const char *prefix);
extern int cmd_symbolic_ref(int argc, const char **argv, const char *prefix);
+extern int cmd_tag(int argc, const char **argv, const char *prefix);
extern int cmd_tar_tree(int argc, const char **argv, const char *prefix);
extern int cmd_unpack_objects(int argc, const char **argv, const char *prefix);
extern int cmd_update_index(int argc, const char **argv, const char *prefix);
diff --git a/git-tag.sh b/git-tag.sh
deleted file mode 100755
index 37cee97..0000000
--- a/git-tag.sh
+++ /dev/null
@@ -1,183 +0,0 @@
-#!/bin/sh
-# Copyright (c) 2005 Linus Torvalds
-
-USAGE='[-n [<num>]] -l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d | -v] [-m <msg>] <tagname> [<head>]'
-SUBDIRECTORY_OK='Yes'
-. git-sh-setup
-
-message_given=
-annotate=
-signed=
-force=
-message=
-username=
-list=
-verify=
-LINES=0
-while case "$#" in 0) break ;; esac
-do
- case "$1" in
- -a)
- annotate=1
- ;;
- -s)
- annotate=1
- signed=1
- ;;
- -f)
- force=1
- ;;
- -n)
- case $2 in
- -*) LINES=1 # no argument
- ;;
- *) shift
- LINES=$(expr "$1" : '\([0-9]*\)')
- [ -z "$LINES" ] && LINES=1 # 1 line is default when -n is used
- ;;
- esac
- ;;
- -l)
- list=1
- shift
- PATTERN="$1" # select tags by shell pattern, not re
- git rev-parse --symbolic --tags | sort |
- while read TAG
- do
- case "$TAG" in
- *$PATTERN*) ;;
- *) continue ;;
- esac
- [ "$LINES" -le 0 ] && { echo "$TAG"; continue ;}
- OBJTYPE=$(git cat-file -t "$TAG")
- case $OBJTYPE in
- tag) ANNOTATION=$(git cat-file tag "$TAG" |
- sed -e '1,/^$/d' \
- -e '/^-----BEGIN PGP SIGNATURE-----$/Q' )
- printf "%-15s %s\n" "$TAG" "$ANNOTATION" |
- sed -e '2,$s/^/ /' \
- -e "${LINES}q"
- ;;
- *) echo "$TAG"
- ;;
- esac
- done
- ;;
- -m)
- annotate=1
- shift
- message="$1"
- if test "$#" = "0"; then
- die "error: option -m needs an argument"
- else
- message_given=1
- fi
- ;;
- -F)
- annotate=1
- shift
- if test "$#" = "0"; then
- die "error: option -F needs an argument"
- else
- message="$(cat "$1")"
- message_given=1
- fi
- ;;
- -u)
- annotate=1
- signed=1
- shift
- username="$1"
- ;;
- -d)
- shift
- had_error=0
- for tag
- do
- cur=$(git-show-ref --verify --hash -- "refs/tags/$tag") || {
- echo >&2 "Seriously, what tag are you talking about?"
- had_error=1
- continue
- }
- git-update-ref -m 'tag: delete' -d "refs/tags/$tag" "$cur" || {
- had_error=1
- continue
- }
- echo "Deleted tag $tag."
- done
- exit $had_error
- ;;
- -v)
- shift
- tag_name="$1"
- tag=$(git-show-ref --verify --hash -- "refs/tags/$tag_name") ||
- die "Seriously, what tag are you talking about?"
- git-verify-tag -v "$tag"
- exit $?
- ;;
- -*)
- usage
- ;;
- *)
- break
- ;;
- esac
- shift
-done
-
-[ -n "$list" ] && exit 0
-
-name="$1"
-[ "$name" ] || usage
-prev=0000000000000000000000000000000000000000
-if git-show-ref --verify --quiet -- "refs/tags/$name"
-then
- test -n "$force" || die "tag '$name' already exists"
- prev=`git rev-parse "refs/tags/$name"`
-fi
-shift
-git-check-ref-format "tags/$name" ||
- die "we do not like '$name' as a tag name."
-
-object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
-type=$(git-cat-file -t $object) || exit 1
-tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
-
-test -n "$username" ||
- username=$(git-repo-config user.signingkey) ||
- username=$(expr "z$tagger" : 'z\(.*>\)')
-
-trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
-
-if [ "$annotate" ]; then
- if [ -z "$message_given" ]; then
- ( echo "#"
- echo "# Write a tag message"
- echo "#" ) > "$GIT_DIR"/TAG_EDITMSG
- ${VISUAL:-${EDITOR:-vi}} "$GIT_DIR"/TAG_EDITMSG || exit
- else
- printf '%s\n' "$message" >"$GIT_DIR"/TAG_EDITMSG
- fi
-
- grep -v '^#' <"$GIT_DIR"/TAG_EDITMSG |
- git-stripspace >"$GIT_DIR"/TAG_FINALMSG
-
- [ -s "$GIT_DIR"/TAG_FINALMSG -o -n "$message_given" ] || {
- echo >&2 "No tag message?"
- exit 1
- }
-
- ( printf 'object %s\ntype %s\ntag %s\ntagger %s\n\n' \
- "$object" "$type" "$name" "$tagger";
- cat "$GIT_DIR"/TAG_FINALMSG ) >"$GIT_DIR"/TAG_TMP
- rm -f "$GIT_DIR"/TAG_TMP.asc "$GIT_DIR"/TAG_FINALMSG
- if [ "$signed" ]; then
- gpg -bsa -u "$username" "$GIT_DIR"/TAG_TMP &&
- cat "$GIT_DIR"/TAG_TMP.asc >>"$GIT_DIR"/TAG_TMP ||
- die "failed to sign the tag with GPG."
- fi
- object=$(git-mktag < "$GIT_DIR"/TAG_TMP)
-fi
-
-git update-ref "refs/tags/$name" "$object" "$prev"
-
diff --git a/git.c b/git.c
index 29b55a1..c9c20fb 100644
--- a/git.c
+++ b/git.c
@@ -285,6 +285,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
{ "show", cmd_show, RUN_SETUP | USE_PAGER },
{ "stripspace", cmd_stripspace },
{ "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
+ { "tag", cmd_tag, RUN_SETUP },
{ "tar-tree", cmd_tar_tree },
{ "unpack-objects", cmd_unpack_objects, RUN_SETUP },
{ "update-index", cmd_update_index, RUN_SETUP },
--
1.5.2.1.134.g447c2
-
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