From 6bc1a235b1260a8395045261f8004ba9f12677c7 Mon Sep 17 00:00:00 2001 From: Ramkumar Ramachandra Date: Wed, 14 Dec 2011 22:24:29 +0530 Subject: [PATCH] revert: make commit subjects in insn sheet optional Change the instruction sheet format subtly so that the subject of the commit message that follows the object name is optional. As a result, an instruction sheet like this is now perfectly valid: pick 35b0426 pick fbd5bbcbc2e pick 7362160f While at it, also fix a bug introduced by 5a5d80f4 (revert: Introduce --continue to continue the operation, 2011-08-04) that failed to read lines that are too long to fit on the commit-id-shaped buffer we currently use; eliminate the need for the buffer altogether. In addition to literal SHA-1 hexes, you can now safely use expressions like the following in the instruction sheet: featurebranch~4 rr/revert-cherry-pick-continue^2~12@{12 days ago} [jc: simplify parsing] Suggested-by: Jonathan Nieder Helped-by: Junio C Hamano Signed-off-by: Ramkumar Ramachandra Signed-off-by: Junio C Hamano --- builtin/revert.c | 37 ++++++++++++++------------------- t/t3510-cherry-pick-sequence.sh | 28 +++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 21 deletions(-) diff --git a/builtin/revert.c b/builtin/revert.c index 76a1633b9..6d520aee7 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -714,31 +714,27 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list, return 0; } -static struct commit *parse_insn_line(char *start, struct replay_opts *opts) +static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts) { unsigned char commit_sha1[20]; - char sha1_abbrev[40]; enum replay_action action; - int insn_len = 0; - char *p, *q; + char *end_of_object_name; + int saved, status; - if (!prefixcmp(start, "pick ")) { + if (!prefixcmp(bol, "pick ")) { action = CHERRY_PICK; - insn_len = strlen("pick"); - p = start + insn_len + 1; - } else if (!prefixcmp(start, "revert ")) { + bol += strlen("pick "); + } else if (!prefixcmp(bol, "revert ")) { action = REVERT; - insn_len = strlen("revert"); - p = start + insn_len + 1; + bol += strlen("revert "); } else return NULL; - q = strchr(p, ' '); - if (!q) - return NULL; - q++; - - strlcpy(sha1_abbrev, p, q - p); + end_of_object_name = bol + strcspn(bol, " \n"); + saved = *end_of_object_name; + *end_of_object_name = '\0'; + status = get_sha1(bol, commit_sha1); + *end_of_object_name = saved; /* * Verify that the action matches up with the one in @@ -751,7 +747,7 @@ static struct commit *parse_insn_line(char *start, struct replay_opts *opts) return NULL; } - if (get_sha1(sha1_abbrev, commit_sha1) < 0) + if (status < 0) return NULL; return lookup_commit_reference(commit_sha1); @@ -766,13 +762,12 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list, int i; for (i = 1; *p; i++) { - commit = parse_insn_line(p, opts); + char *eol = strchrnul(p, '\n'); + commit = parse_insn_line(p, eol, opts); if (!commit) return error(_("Could not parse line %d."), i); next = commit_list_append(commit, next); - p = strchrnul(p, '\n'); - if (*p) - p++; + p = *eol ? eol + 1 : eol; } if (!*todo_list) return error(_("No commits parsed.")); diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index e80050e1f..1820a424e 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -14,6 +14,9 @@ test_description='Test cherry-pick continuation features . ./test-lib.sh +# Repeat first match 10 times +_r10='\1\1\1\1\1\1\1\1\1\1' + pristine_detach () { git cherry-pick --quit && git checkout -f "$1^0" && @@ -478,4 +481,29 @@ test_expect_success 'empty commit set' ' test_expect_code 128 git cherry-pick base..base ' +test_expect_success 'malformed instruction sheet 3' ' + pristine_detach initial && + test_must_fail git cherry-pick base..anotherpick && + echo "resolved" >foo && + git add foo && + git commit && + sed "s/pick \([0-9a-f]*\)/pick $_r10/" .git/sequencer/todo >new_sheet && + cp new_sheet .git/sequencer/todo && + test_must_fail git cherry-pick --continue +' + +test_expect_success 'commit descriptions in insn sheet are optional' ' + pristine_detach initial && + test_must_fail git cherry-pick base..anotherpick && + echo "c" >foo && + git add foo && + git commit && + cut -d" " -f1,2 .git/sequencer/todo >new_sheet && + cp new_sheet .git/sequencer/todo && + git cherry-pick --continue && + test_path_is_missing .git/sequencer && + git rev-list HEAD >commits && + test_line_count = 4 commits +' + test_done -- 2.26.2