diff options
Diffstat (limited to 'sequencer.c')
| -rw-r--r-- | sequencer.c | 192 |
1 files changed, 141 insertions, 51 deletions
diff --git a/sequencer.c b/sequencer.c index bad5077911..ee4f8c6ed4 100644 --- a/sequencer.c +++ b/sequencer.c @@ -18,6 +18,89 @@ #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) { @@ -237,7 +320,7 @@ static int do_recursive_merge(struct commit *base, struct commit *next, rollback_lock_file(&index_lock); if (opts->signoff) - append_signoff(msgbuf, 0); + append_signoff(msgbuf, 0, 0); if (!clean) { int i; @@ -496,7 +579,9 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) } 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"); } @@ -1021,62 +1106,67 @@ int sequencer_pick_revisions(struct replay_opts *opts) return pick_commits(todo_list, opts); } -static int ends_rfc2822_footer(struct strbuf *sb, int ignore_footer) -{ - 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'); - } - - while (i < len - 1 && buf[i] == '\n') - i++; - - for (; i < len; i = k) { - for (k = i; k < len && buf[k] != '\n'; k++) - ; /* do nothing */ - k++; - - if ((buf[k] == ' ' || buf[k] == '\t') && !first) - continue; - - first = 0; - - for (j = 0; i + j < len; j++) { - ch = buf[i + j]; - if (ch == ':') - break; - if (isalnum(ch) || - (ch == '-')) - continue; - return 0; - } - } - return 1; -} - -void append_signoff(struct strbuf *msgbuf, int ignore_footer) +void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag) { + unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP; struct strbuf sob = STRBUF_INIT; - int i; + int has_footer; 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); + + /* + * 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 (!has_footer) { + const char *append_newlines = NULL; + size_t len = msgbuf->len - ignore_footer; + + if (!len) { + /* + * The buffer is completely empty. Leave foom for + * the title and body to be filled in by the user. + */ + append_newlines = "\n\n"; + } else if (msgbuf->buf[len - 1] != '\n') { + /* + * Incomplete line. Complete the line and add a + * blank one so that there is an empty line between + * the message body and the sob. + */ + append_newlines = "\n\n"; + } else if (len == 1) { + /* + * Buffer contains a single newline. Add another + * so that we leave room for the title and body. + */ + append_newlines = "\n"; + } else if (msgbuf->buf[len - 2] != '\n') { + /* + * Buffer ends with a single newline. Add another + * so that there is an empty line between the message + * body and the sob. + */ + append_newlines = "\n"; + } /* else, the buffer already ends with two newlines. */ + + if (append_newlines) + strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, + append_newlines, strlen(append_newlines)); } + + if (has_footer != 3 && (!no_dup_sob || has_footer != 2)) + strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, + sob.buf, sob.len); + strbuf_release(&sob); } |