revision.h

   1 #ifndef REVISION_H
   2 #define REVISION_H
   3
   4 #include "commit.h"
   5 #include "parse-options.h"
   6 #include "grep.h"
   7 #include "notes.h"
   8 #include "pretty.h"
   9 #include "diff.h"
  10 #include "commit-slab-decl.h"
  11
  12 /* Remember to update object flag allocation in object.h */
  13 #define SEEN            (1u<<0)
  14 #define UNINTERESTING   (1u<<1)
  15 #define TREESAME        (1u<<2)
  16 #define SHOWN           (1u<<3)
  17 #define TMP_MARK        (1u<<4) /* for isolated cases; clean after use */
  18 #define BOUNDARY        (1u<<5)
  19 #define CHILD_SHOWN     (1u<<6)
  20 #define ADDED           (1u<<7) /* Parents already parsed and added? */
  21 #define SYMMETRIC_LEFT  (1u<<8)
  22 #define PATCHSAME       (1u<<9)
  23 #define BOTTOM          (1u<<10)
  24 /*
  25  * Indicates object was reached by traversal. i.e. not given by user on
  26  * command-line or stdin.
  27  * NEEDSWORK: NOT_USER_GIVEN doesn't apply to commits because we only support
  28  * filtering trees and blobs, but it may be useful to support filtering commits
  29  * in the future.
  30  */
  31 #define NOT_USER_GIVEN  (1u<<25)
  32 #define TRACK_LINEAR    (1u<<26)
  33 #define ALL_REV_FLAGS   (((1u<<11)-1) | NOT_USER_GIVEN | TRACK_LINEAR)
  34
  35 #define TOPO_WALK_EXPLORED      (1u<<27)
  36 #define TOPO_WALK_INDEGREE      (1u<<28)
  37
  38 #define DECORATE_SHORT_REFS     1
  39 #define DECORATE_FULL_REFS      2
  40
  41 struct log_info;
  42 struct repository;
  43 struct rev_info;
  44 struct string_list;
  45 struct saved_parents;
  46 define_shared_commit_slab(revision_sources, char *);
  47
  48 struct rev_cmdline_info {
  49         unsigned int nr;
  50         unsigned int alloc;
  51         struct rev_cmdline_entry {
  52                 struct object *item;
  53                 const char *name;
  54                 enum {
  55                         REV_CMD_REF,
  56                         REV_CMD_PARENTS_ONLY,
  57                         REV_CMD_LEFT,
  58                         REV_CMD_RIGHT,
  59                         REV_CMD_MERGE_BASE,
  60                         REV_CMD_REV
  61                 } whence;
  62                 unsigned flags;
  63         } *rev;
  64 };
  65
  66 #define REVISION_WALK_WALK 0
  67 #define REVISION_WALK_NO_WALK_SORTED 1
  68 #define REVISION_WALK_NO_WALK_UNSORTED 2
  69
  70 struct oidset;
  71 struct topo_walk_info;
  72
  73 struct rev_info {
  74         /* Starting list */
  75         struct commit_list *commits;
  76         struct object_array pending;
  77         struct repository *repo;
  78
  79         /* Parents of shown commits */
  80         struct object_array boundary_commits;
  81
  82         /* The end-points specified by the end user */
  83         struct rev_cmdline_info cmdline;
  84
  85         /* excluding from --branches, --refs, etc. expansion */
  86         struct string_list *ref_excludes;
  87
  88         /* Basic information */
  89         const char *prefix;
  90         const char *def;
  91         struct pathspec prune_data;
  92
  93         /*
  94          * Whether the arguments parsed by setup_revisions() included any
  95          * "input" revisions that might still have yielded an empty pending
  96          * list (e.g., patterns like "--all" or "--glob").
  97          */
  98         int rev_input_given;
  99
 100         /*
 101          * Whether we read from stdin due to the --stdin option.
 102          */
 103         int read_from_stdin;
 104
 105         /* topo-sort */
 106         enum rev_sort_order sort_order;
 107
 108         unsigned int early_output;
 109
 110         unsigned int    ignore_missing:1,
 111                         ignore_missing_links:1;
 112
 113         /* Traversal flags */
 114         unsigned int    dense:1,
 115                         prune:1,
 116                         no_walk:2,
 117                         remove_empty_trees:1,
 118                         simplify_history:1,
 119                         topo_order:1,
 120                         simplify_merges:1,
 121                         simplify_by_decoration:1,
 122                         single_worktree:1,
 123                         tag_objects:1,
 124                         tree_objects:1,
 125                         blob_objects:1,
 126                         verify_objects:1,
 127                         edge_hint:1,
 128                         edge_hint_aggressive:1,
 129                         limited:1,
 130                         unpacked:1,
 131                         boundary:2,
 132                         count:1,
 133                         left_right:1,
 134                         left_only:1,
 135                         right_only:1,
 136                         rewrite_parents:1,
 137                         print_parents:1,
 138                         show_decorations:1,
 139                         reverse:1,
 140                         reverse_output_stage:1,
 141                         cherry_pick:1,
 142                         cherry_mark:1,
 143                         bisect:1,
 144                         ancestry_path:1,
 145                         first_parent_only:1,
 146                         line_level_traverse:1,
 147                         tree_blobs_in_commit_order:1,
 148
 149                         /*
 150                          * Blobs are shown without regard for their existence.
 151                          * But not so for trees: unless exclude_promisor_objects
 152                          * is set and the tree in question is a promisor object;
 153                          * OR ignore_missing_links is set, the revision walker
 154                          * dies with a "bad tree object HASH" message when
 155                          * encountering a missing tree. For callers that can
 156                          * handle missing trees and want them to be filterable
 157                          * and showable, set this to true. The revision walker
 158                          * will filter and show such a missing tree as usual,
 159                          * but will not attempt to recurse into this tree
 160                          * object.
 161                          */
 162                         do_not_die_on_missing_tree:1,
 163
 164                         /* for internal use only */
 165                         exclude_promisor_objects:1;
 166
 167         /* Diff flags */
 168         unsigned int    diff:1,
 169                         full_diff:1,
 170                         show_root_diff:1,
 171                         no_commit_id:1,
 172                         verbose_header:1,
 173                         ignore_merges:1,
 174                         combine_merges:1,
 175                         combined_all_paths:1,
 176                         dense_combined_merges:1,
 177                         always_show_header:1;
 178
 179         /* Format info */
 180         unsigned int    shown_one:1,
 181                         shown_dashes:1,
 182                         show_merge:1,
 183                         show_notes:1,
 184                         show_notes_given:1,
 185                         show_signature:1,
 186                         pretty_given:1,
 187                         abbrev_commit:1,
 188                         abbrev_commit_given:1,
 189                         zero_commit:1,
 190                         use_terminator:1,
 191                         missing_newline:1,
 192                         date_mode_explicit:1,
 193                         preserve_subject:1;
 194         unsigned int    disable_stdin:1;
 195         /* --show-linear-break */
 196         unsigned int    track_linear:1,
 197                         track_first_time:1,
 198                         linear:1;
 199
 200         struct date_mode date_mode;
 201         int             expand_tabs_in_log; /* unset if negative */
 202         int             expand_tabs_in_log_default;
 203
 204         unsigned int    abbrev;
 205         enum cmit_fmt   commit_format;
 206         struct log_info *loginfo;
 207         int             nr, total;
 208         const char      *mime_boundary;
 209         const char      *patch_suffix;
 210         int             numbered_files;
 211         int             reroll_count;
 212         char            *message_id;
 213         struct ident_split from_ident;
 214         struct string_list *ref_message_ids;
 215         int             add_signoff;
 216         const char      *extra_headers;
 217         const char      *log_reencode;
 218         const char      *subject_prefix;
 219         int             no_inline;
 220         int             show_log_size;
 221         struct string_list *mailmap;
 222
 223         /* Filter by commit log message */
 224         struct grep_opt grep_filter;
 225         /* Negate the match of grep_filter */
 226         int invert_grep;
 227
 228         /* Display history graph */
 229         struct git_graph *graph;
 230
 231         /* special limits */
 232         int skip_count;
 233         int max_count;
 234         timestamp_t max_age;
 235         timestamp_t min_age;
 236         int min_parents;
 237         int max_parents;
 238         int (*include_check)(struct commit *, void *);
 239         void *include_check_data;
 240
 241         /* diff info for patches and for paths limiting */
 242         struct diff_options diffopt;
 243         struct diff_options pruning;
 244
 245         struct reflog_walk_info *reflog_info;
 246         struct decoration children;
 247         struct decoration merge_simplification;
 248         struct decoration treesame;
 249
 250         /* notes-specific options: which refs to show */
 251         struct display_notes_opt notes_opt;
 252
 253         /* interdiff */
 254         const struct object_id *idiff_oid1;
 255         const struct object_id *idiff_oid2;
 256         const char *idiff_title;
 257
 258         /* range-diff */
 259         const char *rdiff1;
 260         const char *rdiff2;
 261         int creation_factor;
 262         const char *rdiff_title;
 263
 264         /* commit counts */
 265         int count_left;
 266         int count_right;
 267         int count_same;
 268
 269         /* line level range that we are chasing */
 270         struct decoration line_log_data;
 271
 272         /* copies of the parent lists, for --full-diff display */
 273         struct saved_parents *saved_parents_slab;
 274
 275         struct commit_list *previous_parents;
 276         const char *break_bar;
 277
 278         struct revision_sources *sources;
 279
 280         struct topo_walk_info *topo_walk_info;
 281 };
 282
 283 int ref_excluded(struct string_list *, const char *path);
 284 void clear_ref_exclusion(struct string_list **);
 285 void add_ref_exclusion(struct string_list **, const char *exclude);
 286
 287
 288 #define REV_TREE_SAME           0
 289 #define REV_TREE_NEW            1       /* Only new files */
 290 #define REV_TREE_OLD            2       /* Only files removed */
 291 #define REV_TREE_DIFFERENT      3       /* Mixed changes */
 292
 293 /* revision.c */
 294 typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
 295 extern volatile show_early_output_fn_t show_early_output;
 296
 297 struct setup_revision_opt {
 298         const char *def;
 299         void (*tweak)(struct rev_info *, struct setup_revision_opt *);
 300         const char *submodule;  /* TODO: drop this and use rev_info->repo */
 301         unsigned int    assume_dashdash:1,
 302                         allow_exclude_promisor_objects:1;
 303         unsigned revarg_opt;
 304 };
 305
 306 #ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
 307 #define init_revisions(revs, prefix) repo_init_revisions(the_repository, revs, prefix)
 308 #endif
 309 void repo_init_revisions(struct repository *r,
 310                          struct rev_info *revs,
 311                          const char *prefix);
 312 int setup_revisions(int argc, const char **argv, struct rev_info *revs,
 313                     struct setup_revision_opt *);
 314 void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
 315                         const struct option *options,
 316                         const char * const usagestr[]);
 317 #define REVARG_CANNOT_BE_FILENAME 01
 318 #define REVARG_COMMITTISH 02
 319 int handle_revision_arg(const char *arg, struct rev_info *revs,
 320                         int flags, unsigned revarg_opt);
 321
 322 void reset_revision_walk(void);
 323 int prepare_revision_walk(struct rev_info *revs);
 324 struct commit *get_revision(struct rev_info *revs);
 325 char *get_revision_mark(const struct rev_info *revs,
 326                         const struct commit *commit);
 327 void put_revision_mark(const struct rev_info *revs,
 328                        const struct commit *commit);
 329
 330 void mark_parents_uninteresting(struct commit *commit);
 331 void mark_tree_uninteresting(struct repository *r, struct tree *tree);
 332 void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees);
 333
 334 void show_object_with_name(FILE *, struct object *, const char *);
 335
 336 void add_pending_object(struct rev_info *revs,
 337                         struct object *obj, const char *name);
 338 void add_pending_oid(struct rev_info *revs,
 339                      const char *name, const struct object_id *oid,
 340                      unsigned int flags);
 341
 342 void add_head_to_pending(struct rev_info *);
 343 void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
 344 void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
 345
 346 enum commit_action {
 347         commit_ignore,
 348         commit_show,
 349         commit_error
 350 };
 351
 352 enum commit_action get_commit_action(struct rev_info *revs,
 353                                      struct commit *commit);
 354 enum commit_action simplify_commit(struct rev_info *revs,
 355                                    struct commit *commit);
 356
 357 enum rewrite_result {
 358         rewrite_one_ok,
 359         rewrite_one_noparents,
 360         rewrite_one_error
 361 };
 362
 363 typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
 364
 365 int rewrite_parents(struct rev_info *revs,
 366                     struct commit *commit,
 367                     rewrite_parent_fn_t rewrite_parent);
 368
 369 /*
 370  * The log machinery saves the original parent list so that
 371  * get_saved_parents() can later tell what the real parents of the
 372  * commits are, when commit->parents has been modified by history
 373  * simpification.
 374  *
 375  * get_saved_parents() will transparently return commit->parents if
 376  * history simplification is off.
 377  */
 378 struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
 379
 380 #endif