diff options
Diffstat (limited to 'builtin/merge.c')
| -rw-r--r-- | builtin/merge.c | 80 |
1 files changed, 59 insertions, 21 deletions
diff --git a/builtin/merge.c b/builtin/merge.c index 10f091b519..8c58c3cc4a 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -57,6 +57,7 @@ static const char *branch; static int option_renormalize; static int verbosity; static int allow_rerere_auto; +static int abort_current_merge; static struct strategy all_strategy[] = { { "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL }, @@ -193,10 +194,12 @@ static struct option builtin_merge_options[] = { "merge strategy to use", option_parse_strategy), OPT_CALLBACK('X', "strategy-option", &xopts, "option=value", "option for selected merge strategy", option_parse_x), - OPT_CALLBACK('m', "message", &merge_msg, "message", - "message to be used for the merge commit (if any)", + OPT_CALLBACK('m', "message", &merge_msg, "MESSAGE", + "merge commit message (for a non-fast-forward merge)", option_parse_message), OPT__VERBOSITY(&verbosity), + OPT_BOOLEAN(0, "abort", &abort_current_merge, + "abort the current in-progress merge"), OPT_END() }; @@ -234,6 +237,24 @@ static void save_state(void) die("not a valid object: %s", buffer.buf); } +static void read_empty(unsigned const char *sha1, int verbose) +{ + int i = 0; + const char *args[7]; + + args[i++] = "read-tree"; + if (verbose) + args[i++] = "-v"; + args[i++] = "-m"; + args[i++] = "-u"; + args[i++] = EMPTY_TREE_SHA1_HEX; + args[i++] = sha1_to_hex(sha1); + args[i] = NULL; + + if (run_command_v_opt(args, RUN_GIT_CMD)) + die("read-tree failed"); +} + static void reset_hard(unsigned const char *sha1, int verbose) { int i = 0; @@ -403,7 +424,7 @@ static void merge_name(const char *remote, struct strbuf *msg) goto cleanup; } if (!prefixcmp(found_ref, "refs/remotes/")) { - strbuf_addf(msg, "%s\t\tremote branch '%s' of .\n", + strbuf_addf(msg, "%s\t\tremote-tracking branch '%s' of .\n", sha1_to_hex(branch_head), remote); goto cleanup; } @@ -561,7 +582,8 @@ static void write_tree_trivial(unsigned char *sha1) die("git write-tree failed to write a tree"); } -int try_merge_command(const char *strategy, struct commit_list *common, +int try_merge_command(const char *strategy, size_t xopts_nr, + const char **xopts, struct commit_list *common, const char *head_arg, struct commit_list *remotes) { const char **args; @@ -659,7 +681,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, rollback_lock_file(lock); return clean ? 0 : 1; } else { - return try_merge_command(strategy, common, head_arg, remoteheads); + return try_merge_command(strategy, xopts_nr, xopts, + common, head_arg, remoteheads); } } @@ -901,22 +924,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix) const char *best_strategy = NULL, *wt_strategy = NULL; struct commit_list **remotes = &remoteheads; - if (read_cache_unmerged()) { - die_resolve_conflict("merge"); - } - if (file_exists(git_path("MERGE_HEAD"))) { - /* - * There is no unmerged entry, don't advise 'git - * add/rm <file>', just 'git commit'. - */ - if (advice_resolve_conflict) - die("You have not concluded your merge (MERGE_HEAD exists).\n" - "Please, commit your changes before you can merge."); - else - die("You have not concluded your merge (MERGE_HEAD exists)."); - } + if (argc == 2 && !strcmp(argv[1], "-h")) + usage_with_options(builtin_merge_usage, builtin_merge_options); - resolve_undo_clear(); /* * Check if we are _not_ on a detached HEAD, i.e. if there is a * current branch. @@ -935,6 +945,34 @@ int cmd_merge(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, builtin_merge_options, builtin_merge_usage, 0); + + if (abort_current_merge) { + int nargc = 2; + const char *nargv[] = {"reset", "--merge", NULL}; + + if (!file_exists(git_path("MERGE_HEAD"))) + die("There is no merge to abort (MERGE_HEAD missing)."); + + /* Invoke 'git reset --merge' */ + return cmd_reset(nargc, nargv, prefix); + } + + if (read_cache_unmerged()) + die_resolve_conflict("merge"); + + if (file_exists(git_path("MERGE_HEAD"))) { + /* + * There is no unmerged entry, don't advise 'git + * add/rm <file>', just 'git commit'. + */ + if (advice_resolve_conflict) + die("You have not concluded your merge (MERGE_HEAD exists).\n" + "Please, commit your changes before you can merge."); + else + die("You have not concluded your merge (MERGE_HEAD exists)."); + } + resolve_undo_clear(); + if (verbosity < 0) show_diffstat = 0; @@ -985,7 +1023,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) die("%s - not something we can merge", argv[0]); update_ref("initial pull", "HEAD", remote_head->sha1, NULL, 0, DIE_ON_ERR); - reset_hard(remote_head->sha1, 0); + read_empty(remote_head->sha1, 0); return 0; } else { struct strbuf merge_names = STRBUF_INIT; |