builtin/rebase--interactive.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "config.h"
   4 #include "parse-options.h"
   5 #include "sequencer.h"
   6 #include "rebase-interactive.h"
   7 #include "argv-array.h"
   8 #include "refs.h"
   9 #include "rerere.h"
  10 #include "run-command.h"
  11
  12 static GIT_PATH_FUNC(path_state_dir, "rebase-merge/")
  13 static GIT_PATH_FUNC(path_squash_onto, "rebase-merge/squash-onto")
  14 static GIT_PATH_FUNC(path_interactive, "rebase-merge/interactive")
  15
  16 static int get_revision_ranges(const char *upstream, const char *onto,
  17                                const char **head_hash,
  18                                char **revisions, char **shortrevisions)
  19 {
  20         const char *base_rev = upstream ? upstream : onto, *shorthead;
  21         struct object_id orig_head;
  22
  23         if (get_oid("HEAD", &orig_head))
  24                 return error(_("no HEAD?"));
  25
  26         *head_hash = find_unique_abbrev(&orig_head, GIT_MAX_HEXSZ);
  27         *revisions = xstrfmt("%s...%s", base_rev, *head_hash);
  28
  29         shorthead = find_unique_abbrev(&orig_head, DEFAULT_ABBREV);
  30
  31         if (upstream) {
  32                 const char *shortrev;
  33                 struct object_id rev_oid;
  34
  35                 get_oid(base_rev, &rev_oid);
  36                 shortrev = find_unique_abbrev(&rev_oid, DEFAULT_ABBREV);
  37
  38                 *shortrevisions = xstrfmt("%s..%s", shortrev, shorthead);
  39         } else
  40                 *shortrevisions = xstrdup(shorthead);
  41
  42         return 0;
  43 }
  44
  45 static int init_basic_state(struct replay_opts *opts, const char *head_name,
  46                             const char *onto, const char *orig_head)
  47 {
  48         FILE *interactive;
  49
  50         if (!is_directory(path_state_dir()) && mkdir_in_gitdir(path_state_dir()))
  51                 return error_errno(_("could not create temporary %s"), path_state_dir());
  52
  53         delete_reflog("REBASE_HEAD");
  54
  55         interactive = fopen(path_interactive(), "w");
  56         if (!interactive)
  57                 return error_errno(_("could not mark as interactive"));
  58         fclose(interactive);
  59
  60         return write_basic_state(opts, head_name, onto, orig_head);
  61 }
  62
  63 static int do_interactive_rebase(struct replay_opts *opts, unsigned flags,
  64                                  const char *switch_to, const char *upstream,
  65                                  const char *onto, const char *onto_name,
  66                                  const char *squash_onto, const char *head_name,
  67                                  const char *restrict_revision, char *raw_strategies,
  68                                  const char *cmd, unsigned autosquash)
  69 {
  70         int ret;
  71         const char *head_hash = NULL;
  72         char *revisions = NULL, *shortrevisions = NULL;
  73         struct argv_array make_script_args = ARGV_ARRAY_INIT;
  74         FILE *todo_list;
  75
  76         if (prepare_branch_to_be_rebased(opts, switch_to))
  77                 return -1;
  78
  79         if (get_revision_ranges(upstream, onto, &head_hash,
  80                                 &revisions, &shortrevisions))
  81                 return -1;
  82
  83         if (raw_strategies)
  84                 parse_strategy_opts(opts, raw_strategies);
  85
  86         if (init_basic_state(opts, head_name, onto, head_hash)) {
  87                 free(revisions);
  88                 free(shortrevisions);
  89
  90                 return -1;
  91         }
  92
  93         if (!upstream && squash_onto)
  94                 write_file(path_squash_onto(), "%s\n", squash_onto);
  95
  96         todo_list = fopen(rebase_path_todo(), "w");
  97         if (!todo_list) {
  98                 free(revisions);
  99                 free(shortrevisions);
 100
 101                 return error_errno(_("could not open %s"), rebase_path_todo());
 102         }
 103
 104         argv_array_pushl(&make_script_args, "", revisions, NULL);
 105         if (restrict_revision)
 106                 argv_array_push(&make_script_args, restrict_revision);
 107
 108         ret = sequencer_make_script(the_repository, todo_list,
 109                                     make_script_args.argc, make_script_args.argv,
 110                                     flags);
 111         fclose(todo_list);
 112
 113         if (ret)
 114                 error(_("could not generate todo list"));
 115         else {
 116                 discard_cache();
 117                 ret = complete_action(the_repository, opts, flags,
 118                                       shortrevisions, onto_name, onto,
 119                                       head_hash, cmd, autosquash);
 120         }
 121
 122         free(revisions);
 123         free(shortrevisions);
 124         argv_array_clear(&make_script_args);
 125
 126         return ret;
 127 }
 128
 129 static const char * const builtin_rebase_interactive_usage[] = {
 130         N_("git rebase--interactive [<options>]"),
 131         NULL
 132 };
 133
 134 int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
 135 {
 136         struct replay_opts opts = REPLAY_OPTS_INIT;
 137         unsigned flags = 0, keep_empty = 0, rebase_merges = 0, autosquash = 0;
 138         int abbreviate_commands = 0, rebase_cousins = -1, ret = 0;
 139         const char *onto = NULL, *onto_name = NULL, *restrict_revision = NULL,
 140                 *squash_onto = NULL, *upstream = NULL, *head_name = NULL,
 141                 *switch_to = NULL, *cmd = NULL;
 142         char *raw_strategies = NULL;
 143         enum {
 144                 NONE = 0, CONTINUE, SKIP, EDIT_TODO, SHOW_CURRENT_PATCH,
 145                 SHORTEN_OIDS, EXPAND_OIDS, CHECK_TODO_LIST, REARRANGE_SQUASH, ADD_EXEC
 146         } command = 0;
 147         struct option options[] = {
 148                 OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")),
 149                 OPT_BOOL(0, "keep-empty", &keep_empty, N_("keep empty commits")),
 150                 OPT_BOOL(0, "allow-empty-message", &opts.allow_empty_message,
 151                          N_("allow commits with empty messages")),
 152                 OPT_BOOL(0, "rebase-merges", &rebase_merges, N_("rebase merge commits")),
 153                 OPT_BOOL(0, "rebase-cousins", &rebase_cousins,
 154                          N_("keep original branch points of cousins")),
 155                 OPT_BOOL(0, "autosquash", &autosquash,
 156                          N_("move commits that begin with squash!/fixup!")),
 157                 OPT_BOOL(0, "signoff", &opts.signoff, N_("sign commits")),
 158                 OPT__VERBOSE(&opts.verbose, N_("be verbose")),
 159                 OPT_CMDMODE(0, "continue", &command, N_("continue rebase"),
 160                             CONTINUE),
 161                 OPT_CMDMODE(0, "skip", &command, N_("skip commit"), SKIP),
 162                 OPT_CMDMODE(0, "edit-todo", &command, N_("edit the todo list"),
 163                             EDIT_TODO),
 164                 OPT_CMDMODE(0, "show-current-patch", &command, N_("show the current patch"),
 165                             SHOW_CURRENT_PATCH),
 166                 OPT_CMDMODE(0, "shorten-ids", &command,
 167                         N_("shorten commit ids in the todo list"), SHORTEN_OIDS),
 168                 OPT_CMDMODE(0, "expand-ids", &command,
 169                         N_("expand commit ids in the todo list"), EXPAND_OIDS),
 170                 OPT_CMDMODE(0, "check-todo-list", &command,
 171                         N_("check the todo list"), CHECK_TODO_LIST),
 172                 OPT_CMDMODE(0, "rearrange-squash", &command,
 173                         N_("rearrange fixup/squash lines"), REARRANGE_SQUASH),
 174                 OPT_CMDMODE(0, "add-exec-commands", &command,
 175                         N_("insert exec commands in todo list"), ADD_EXEC),
 176                 OPT_STRING(0, "onto", &onto, N_("onto"), N_("onto")),
 177                 OPT_STRING(0, "restrict-revision", &restrict_revision,
 178                            N_("restrict-revision"), N_("restrict revision")),
 179                 OPT_STRING(0, "squash-onto", &squash_onto, N_("squash-onto"),
 180                            N_("squash onto")),
 181                 OPT_STRING(0, "upstream", &upstream, N_("upstream"),
 182                            N_("the upstream commit")),
 183                 OPT_STRING(0, "head-name", &head_name, N_("head-name"), N_("head name")),
 184                 { OPTION_STRING, 'S', "gpg-sign", &opts.gpg_sign, N_("key-id"),
 185                         N_("GPG-sign commits"),
 186                         PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
 187                 OPT_STRING(0, "strategy", &opts.strategy, N_("strategy"),
 188                            N_("rebase strategy")),
 189                 OPT_STRING(0, "strategy-opts", &raw_strategies, N_("strategy-opts"),
 190                            N_("strategy options")),
 191                 OPT_STRING(0, "switch-to", &switch_to, N_("switch-to"),
 192                            N_("the branch or commit to checkout")),
 193                 OPT_STRING(0, "onto-name", &onto_name, N_("onto-name"), N_("onto name")),
 194                 OPT_STRING(0, "cmd", &cmd, N_("cmd"), N_("the command to run")),
 195                 OPT_RERERE_AUTOUPDATE(&opts.allow_rerere_auto),
 196                 OPT_END()
 197         };
 198
 199         sequencer_init_config(&opts);
 200         git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands);
 201
 202         opts.action = REPLAY_INTERACTIVE_REBASE;
 203         opts.allow_ff = 1;
 204         opts.allow_empty = 1;
 205
 206         if (argc == 1)
 207                 usage_with_options(builtin_rebase_interactive_usage, options);
 208
 209         argc = parse_options(argc, argv, NULL, options,
 210                         builtin_rebase_interactive_usage, PARSE_OPT_KEEP_ARGV0);
 211
 212         opts.gpg_sign = xstrdup_or_null(opts.gpg_sign);
 213
 214         flags |= keep_empty ? TODO_LIST_KEEP_EMPTY : 0;
 215         flags |= abbreviate_commands ? TODO_LIST_ABBREVIATE_CMDS : 0;
 216         flags |= rebase_merges ? TODO_LIST_REBASE_MERGES : 0;
 217         flags |= rebase_cousins > 0 ? TODO_LIST_REBASE_COUSINS : 0;
 218         flags |= command == SHORTEN_OIDS ? TODO_LIST_SHORTEN_IDS : 0;
 219
 220         if (rebase_cousins >= 0 && !rebase_merges)
 221                 warning(_("--[no-]rebase-cousins has no effect without "
 222                           "--rebase-merges"));
 223
 224         switch (command) {
 225         case NONE:
 226                 if (!onto && !upstream)
 227                         die(_("a base commit must be provided with --upstream or --onto"));
 228
 229                 ret = do_interactive_rebase(&opts, flags, switch_to, upstream, onto,
 230                                             onto_name, squash_onto, head_name, restrict_revision,
 231                                             raw_strategies, cmd, autosquash);
 232                 break;
 233         case SKIP: {
 234                 struct string_list merge_rr = STRING_LIST_INIT_DUP;
 235
 236                 rerere_clear(the_repository, &merge_rr);
 237                 /* fallthrough */
 238         case CONTINUE:
 239                 ret = sequencer_continue(the_repository, &opts);
 240                 break;
 241         }
 242         case EDIT_TODO:
 243                 ret = edit_todo_list(the_repository, flags);
 244                 break;
 245         case SHOW_CURRENT_PATCH: {
 246                 struct child_process cmd = CHILD_PROCESS_INIT;
 247
 248                 cmd.git_cmd = 1;
 249                 argv_array_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL);
 250                 ret = run_command(&cmd);
 251
 252                 break;
 253         }
 254         case SHORTEN_OIDS:
 255         case EXPAND_OIDS:
 256                 ret = transform_todos(the_repository, flags);
 257                 break;
 258         case CHECK_TODO_LIST:
 259                 ret = check_todo_list(the_repository);
 260                 break;
 261         case REARRANGE_SQUASH:
 262                 ret = rearrange_squash(the_repository);
 263                 break;
 264         case ADD_EXEC:
 265                 ret = sequencer_add_exec_commands(the_repository, cmd);
 266                 break;
 267         default:
 268                 BUG("invalid command '%d'", command);
 269         }
 270
 271         return !!ret;
 272 }