#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
const char sign_off_header[] = "Signed-off-by: ";
+static const char cherry_picked_prefix[] = "(cherry picked from commit ";
+
+static int is_rfc2822_line(const char *buf, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ int ch = buf[i];
+ if (ch == ':')
+ return 1;
+ if (!isalnum(ch) && ch != '-')
+ break;
+ }
+
+ return 0;
+}
+
+static int is_cherry_picked_from_line(const char *buf, int len)
+{
+ /*
+ * We only care that it looks roughly like (cherry picked from ...)
+ */
+ return len > strlen(cherry_picked_prefix) + 1 &&
+ !prefixcmp(buf, cherry_picked_prefix) && buf[len - 1] == ')';
+}
+
+/*
+ * Returns 0 for non-conforming footer
+ * Returns 1 for conforming footer
+ * Returns 2 when sob exists within conforming footer
+ * Returns 3 when sob exists within conforming footer as last entry
+ */
+static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob,
+ int ignore_footer)
+{
+ char prev;
+ int i, k;
+ int len = sb->len - ignore_footer;
+ const char *buf = sb->buf;
+ int found_sob = 0;
+
+ /* footer must end with newline */
+ if (!len || buf[len - 1] != '\n')
+ return 0;
+
+ prev = '\0';
+ for (i = len - 1; i > 0; i--) {
+ char ch = buf[i];
+ if (prev == '\n' && ch == '\n') /* paragraph break */
+ break;
+ prev = ch;
+ }
+
+ /* require at least one blank line */
+ if (prev != '\n' || buf[i] != '\n')
+ return 0;
+
+ /* advance to start of last paragraph */
+ while (i < len - 1 && buf[i] == '\n')
+ i++;
+
+ for (; i < len; i = k) {
+ int found_rfc2822;
+
+ for (k = i; k < len && buf[k] != '\n'; k++)
+ ; /* do nothing */
+ k++;
+
+ found_rfc2822 = is_rfc2822_line(buf + i, k - i - 1);
+ if (found_rfc2822 && sob &&
+ !strncmp(buf + i, sob->buf, sob->len))
+ found_sob = k;
+
+ if (!(found_rfc2822 ||
+ is_cherry_picked_from_line(buf + i, k - i - 1)))
+ return 0;
+ }
+ if (found_sob == i)
+ return 3;
+ if (found_sob)
+ return 2;
+ return 1;
+}
static void remove_sequencer_state(void)
{
out->reencoded_message = NULL;
out->message = commit->buffer;
- if (strcmp(encoding, git_commit_encoding))
+ if (same_encoding(encoding, git_commit_encoding))
out->reencoded_message = reencode_string(commit->buffer,
git_commit_encoding, encoding);
if (out->reencoded_message)
struct ref_lock *ref_lock;
read_cache();
- if (checkout_fast_forward(from, to))
+ if (checkout_fast_forward(from, to, 1))
exit(1); /* the callee should have complained already */
ref_lock = lock_any_ref_for_update("HEAD", from, 0);
return write_ref_sha1(ref_lock, to, "cherry-pick");
rollback_lock_file(&index_lock);
if (opts->signoff)
- append_signoff(msgbuf, 0);
+ append_signoff(msgbuf, 0, 0);
if (!clean) {
int i;
}
if (opts->record_origin) {
- strbuf_addstr(&msgbuf, "(cherry picked from commit ");
+ if (!has_conforming_footer(&msgbuf, NULL, 0))
+ strbuf_addch(&msgbuf, '\n');
+ strbuf_addstr(&msgbuf, cherry_picked_prefix);
strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
strbuf_addstr(&msgbuf, ")\n");
}
return pick_commits(todo_list, opts);
}
-static int ends_rfc2822_footer(struct strbuf *sb, int ignore_footer)
+void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag)
{
- int ch;
- int hit = 0;
- int i, j, k;
- int len = sb->len - ignore_footer;
- int first = 1;
- const char *buf = sb->buf;
-
- for (i = len - 1; i > 0; i--) {
- if (hit && buf[i] == '\n')
- break;
- hit = (buf[i] == '\n');
- }
+ unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP;
+ struct strbuf sob = STRBUF_INIT;
+ int has_footer;
- while (i < len - 1 && buf[i] == '\n')
- i++;
+ strbuf_addstr(&sob, sign_off_header);
+ strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
+ getenv("GIT_COMMITTER_EMAIL")));
+ strbuf_addch(&sob, '\n');
- for (; i < len; i = k) {
- for (k = i; k < len && buf[k] != '\n'; k++)
- ; /* do nothing */
- k++;
+ /*
+ * If the whole message buffer is equal to the sob, pretend that we
+ * found a conforming footer with a matching sob
+ */
+ if (msgbuf->len - ignore_footer == sob.len &&
+ !strncmp(msgbuf->buf, sob.buf, sob.len))
+ has_footer = 3;
+ else
+ has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer);
- if ((buf[k] == ' ' || buf[k] == '\t') && !first)
- continue;
+ if (!has_footer) {
+ const char *append_newlines = NULL;
+ size_t len = msgbuf->len - ignore_footer;
- first = 0;
+ if (len && msgbuf->buf[len - 1] != '\n')
+ append_newlines = "\n\n";
+ else if (len > 1 && msgbuf->buf[len - 2] != '\n')
+ append_newlines = "\n";
- for (j = 0; i + j < len; j++) {
- ch = buf[i + j];
- if (ch == ':')
- break;
- if (isalnum(ch) ||
- (ch == '-'))
- continue;
- return 0;
- }
+ if (append_newlines)
+ strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
+ append_newlines, strlen(append_newlines));
}
- return 1;
-}
-void append_signoff(struct strbuf *msgbuf, int ignore_footer)
-{
- struct strbuf sob = STRBUF_INIT;
- int i;
+ if (has_footer != 3 && (!no_dup_sob || has_footer != 2))
+ strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
+ sob.buf, sob.len);
- strbuf_addstr(&sob, sign_off_header);
- strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
- getenv("GIT_COMMITTER_EMAIL")));
- strbuf_addch(&sob, '\n');
- for (i = msgbuf->len - 1 - ignore_footer; i > 0 && msgbuf->buf[i - 1] != '\n'; i--)
- ; /* do nothing */
- if (prefixcmp(msgbuf->buf + i, sob.buf)) {
- if (!i || !ends_rfc2822_footer(msgbuf, ignore_footer))
- strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, "\n", 1);
- strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, sob.buf, sob.len);
- }
strbuf_release(&sob);
}