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-rw-r--r--builtin-revert.c106
1 files changed, 61 insertions, 45 deletions
diff --git a/builtin-revert.c b/builtin-revert.c
index 94e77771d..365b330f9 100644
--- a/builtin-revert.c
+++ b/builtin-revert.c
@@ -7,6 +7,7 @@
#include "run-command.h"
#include "exec_cmd.h"
#include "utf8.h"
+#include "parse-options.h"
/*
* This implements the builtins revert and cherry-pick.
@@ -19,51 +20,44 @@
* Copyright (c) 2005 Junio C Hamano
*/
-static const char *revert_usage = "git-revert [--edit | --no-edit] [-n] <commit-ish>";
+static const char * const revert_usage[] = {
+ "git-revert [options] <commit-ish>",
+ NULL
+};
-static const char *cherry_pick_usage = "git-cherry-pick [--edit] [-n] [-r] [-x] <commit-ish>";
+static const char * const cherry_pick_usage[] = {
+ "git-cherry-pick [options] <commit-ish>",
+ NULL
+};
-static int edit;
-static int replay;
+static int edit, no_replay, no_commit, needed_deref, mainline;
static enum { REVERT, CHERRY_PICK } action;
-static int no_commit;
static struct commit *commit;
-static int needed_deref;
static const char *me;
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-static void parse_options(int argc, const char **argv)
+static void parse_args(int argc, const char **argv)
{
- const char *usage_str = action == REVERT ?
- revert_usage : cherry_pick_usage;
+ const char * const * usage_str =
+ action == REVERT ? revert_usage : cherry_pick_usage;
unsigned char sha1[20];
const char *arg;
- int i;
+ int noop;
+ struct option options[] = {
+ OPT_BOOLEAN('n', "no-commit", &no_commit, "don't automatically commit"),
+ OPT_BOOLEAN('e', "edit", &edit, "edit the commit message"),
+ OPT_BOOLEAN('x', NULL, &no_replay, "append commit name when cherry-picking"),
+ OPT_BOOLEAN('r', NULL, &noop, "no-op (backward compatibility)"),
+ OPT_INTEGER('m', "mainline", &mainline, "parent number"),
+ OPT_END(),
+ };
+
+ if (parse_options(argc, argv, options, usage_str, 0) != 1)
+ usage_with_options(usage_str, options);
+ arg = argv[0];
- if (argc < 2)
- usage(usage_str);
-
- for (i = 1; i < argc; i++) {
- arg = argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "-n") || !strcmp(arg, "--no-commit"))
- no_commit = 1;
- else if (!strcmp(arg, "-e") || !strcmp(arg, "--edit"))
- edit = 1;
- else if (!strcmp(arg, "--no-edit"))
- edit = 0;
- else if (!strcmp(arg, "-x") || !strcmp(arg, "--i-really-want-"
- "to-expose-my-private-commit-object-name"))
- replay = 0;
- else if (strcmp(arg, "-r"))
- usage(usage_str);
- }
- if (i != argc - 1)
- usage(usage_str);
- arg = argv[argc - 1];
if (get_sha1(arg, sha1))
die ("Cannot find '%s'", arg);
commit = (struct commit *)parse_object(sha1);
@@ -168,9 +162,7 @@ static void set_author_ident_env(const char *message)
char *line, *pend, *email, *timestamp;
p += 7;
- line = xmalloc(eol + 1 - p);
- memcpy(line, p, eol - p);
- line[eol - p] = '\0';
+ line = xmemdupz(p, eol - p);
email = strchr(line, '<');
if (!email)
die ("Could not extract author email from %s",
@@ -236,7 +228,7 @@ static int merge_recursive(const char *base_sha1,
static int revert_or_cherry_pick(int argc, const char **argv)
{
unsigned char head[20];
- struct commit *base, *next;
+ struct commit *base, *next, *parent;
int i;
char *oneline, *reencoded_message = NULL;
const char *message, *encoding;
@@ -245,16 +237,18 @@ static int revert_or_cherry_pick(int argc, const char **argv)
git_config(git_default_config);
me = action == REVERT ? "revert" : "cherry-pick";
setenv(GIT_REFLOG_ACTION, me, 0);
- parse_options(argc, argv);
+ parse_args(argc, argv);
/* this is copied from the shell script, but it's never triggered... */
- if (action == REVERT && replay)
+ if (action == REVERT && !no_replay)
die("revert is incompatible with replay");
if (no_commit) {
/*
* We do not intend to commit immediately. We just want to
- * merge the differences in.
+ * merge the differences in, so let's compute the tree
+ * that represents the "current" state for merge-recursive
+ * to work on.
*/
if (write_tree(head, 0, NULL))
die ("Your index file is unmerged.");
@@ -271,8 +265,29 @@ static int revert_or_cherry_pick(int argc, const char **argv)
if (!commit->parents)
die ("Cannot %s a root commit", me);
- if (commit->parents->next)
- die ("Cannot %s a multi-parent commit.", me);
+ if (commit->parents->next) {
+ /* Reverting or cherry-picking a merge commit */
+ int cnt;
+ struct commit_list *p;
+
+ if (!mainline)
+ die("Commit %s is a merge but no -m option was given.",
+ sha1_to_hex(commit->object.sha1));
+
+ for (cnt = 1, p = commit->parents;
+ cnt != mainline && p;
+ cnt++)
+ p = p->next;
+ if (cnt != mainline || !p)
+ die("Commit %s does not have parent %d",
+ sha1_to_hex(commit->object.sha1), mainline);
+ parent = p->item;
+ } else if (0 < mainline)
+ die("Mainline was specified but commit %s is not a merge.",
+ sha1_to_hex(commit->object.sha1));
+ else
+ parent = commit->parents->item;
+
if (!(message = commit->buffer))
die ("Cannot get commit message for %s",
sha1_to_hex(commit->object.sha1));
@@ -301,18 +316,18 @@ static int revert_or_cherry_pick(int argc, const char **argv)
char *oneline_body = strchr(oneline, ' ');
base = commit;
- next = commit->parents->item;
+ next = parent;
add_to_msg("Revert \"");
add_to_msg(oneline_body + 1);
add_to_msg("\"\n\nThis reverts commit ");
add_to_msg(sha1_to_hex(commit->object.sha1));
add_to_msg(".\n");
} else {
- base = commit->parents->item;
+ base = parent;
next = commit;
set_author_ident_env(message);
add_message_to_msg(message);
- if (!replay) {
+ if (no_replay) {
add_to_msg("(cherry picked from commit ");
add_to_msg(sha1_to_hex(commit->object.sha1));
add_to_msg(")\n");
@@ -390,13 +405,14 @@ int cmd_revert(int argc, const char **argv, const char *prefix)
{
if (isatty(0))
edit = 1;
+ no_replay = 1;
action = REVERT;
return revert_or_cherry_pick(argc, argv);
}
int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
{
- replay = 1;
+ no_replay = 0;
action = CHERRY_PICK;
return revert_or_cherry_pick(argc, argv);
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-19 00:10:33 +0000