diff options
Diffstat (limited to 'builtin-revert.c')
| -rw-r--r-- | builtin-revert.c | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/builtin-revert.c b/builtin-revert.c index eff52687a8..476f41e760 100644 --- a/builtin-revert.c +++ b/builtin-revert.c @@ -13,6 +13,7 @@ #include "revision.h" #include "rerere.h" #include "merge-recursive.h" +#include "refs.h" /* * This implements the builtins revert and cherry-pick. @@ -35,7 +36,7 @@ static const char * const cherry_pick_usage[] = { NULL }; -static int edit, no_replay, no_commit, mainline, signoff; +static int edit, no_replay, no_commit, mainline, signoff, allow_ff; static enum { REVERT, CHERRY_PICK } action; static struct commit *commit; static const char *commit_name; @@ -60,8 +61,19 @@ static void parse_args(int argc, const char **argv) OPT_INTEGER('m', "mainline", &mainline, "parent number"), OPT_RERERE_AUTOUPDATE(&allow_rerere_auto), OPT_END(), + OPT_END(), + OPT_END(), }; + if (action == CHERRY_PICK) { + struct option cp_extra[] = { + OPT_BOOLEAN(0, "ff", &allow_ff, "allow fast-forward"), + OPT_END(), + }; + if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra)) + die("program error"); + } + if (parse_options(argc, argv, NULL, options, usage_str, 0) != 1) usage_with_options(usage_str, options); @@ -244,6 +256,17 @@ static NORETURN void die_dirty_index(const char *me) } } +static int fast_forward_to(const unsigned char *to, const unsigned char *from) +{ + struct ref_lock *ref_lock; + + read_cache(); + if (checkout_fast_forward(from, to)) + 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"); +} + static int revert_or_cherry_pick(int argc, const char **argv) { unsigned char head[20]; @@ -265,6 +288,17 @@ static int revert_or_cherry_pick(int argc, const char **argv) if (action == REVERT && !no_replay) die("revert is incompatible with replay"); + if (allow_ff) { + if (signoff) + die("cherry-pick --ff cannot be used with --signoff"); + if (no_commit) + die("cherry-pick --ff cannot be used with --no-commit"); + if (no_replay) + die("cherry-pick --ff cannot be used with -x"); + if (edit) + die("cherry-pick --ff cannot be used with --edit"); + } + if (read_cache() < 0) die("git %s: failed to read the index", me); if (no_commit) { @@ -284,8 +318,6 @@ static int revert_or_cherry_pick(int argc, const char **argv) } discard_cache(); - index_fd = hold_locked_index(&index_lock, 1); - if (!commit->parents) { if (action == REVERT) die ("Cannot revert a root commit"); @@ -314,6 +346,9 @@ static int revert_or_cherry_pick(int argc, const char **argv) else parent = commit->parents->item; + if (allow_ff && !hashcmp(parent->object.sha1, head)) + return fast_forward_to(commit->object.sha1, head); + if (!(message = commit->buffer)) die ("Cannot get commit message for %s", sha1_to_hex(commit->object.sha1)); @@ -343,6 +378,8 @@ static int revert_or_cherry_pick(int argc, const char **argv) oneline = get_oneline(message); + index_fd = hold_locked_index(&index_lock, 1); + if (action == REVERT) { char *oneline_body = strchr(oneline, ' '); |