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 #define USER_GIVEN      (1u<<25) /* given directly by the user */
  25 #define TRACK_LINEAR    (1u<<26)
  26 #define ALL_REV_FLAGS   (((1u<<11)-1) | USER_GIVEN | TRACK_LINEAR)
  27
  28 #define DECORATE_SHORT_REFS     1
  29 #define DECORATE_FULL_REFS      2
  30
  31 struct rev_info;
  32 struct log_info;
  33 struct string_list;
  34 struct saved_parents;
  35 define_shared_commit_slab(revision_sources, char *);
  36
  37 struct rev_cmdline_info {
  38         unsigned int nr;
  39         unsigned int alloc;
  40         struct rev_cmdline_entry {
  41                 struct object *item;
  42                 const char *name;
  43                 enum {
  44                         REV_CMD_REF,
  45                         REV_CMD_PARENTS_ONLY,
  46                         REV_CMD_LEFT,
  47                         REV_CMD_RIGHT,
  48                         REV_CMD_MERGE_BASE,
  49                         REV_CMD_REV
  50                 } whence;
  51                 unsigned flags;
  52         } *rev;
  53 };
  54
  55 #define REVISION_WALK_WALK 0
  56 #define REVISION_WALK_NO_WALK_SORTED 1
  57 #define REVISION_WALK_NO_WALK_UNSORTED 2
  58
  59 struct rev_info {
  60         /* Starting list */
  61         struct commit_list *commits;
  62         struct object_array pending;
  63
  64         /* Parents of shown commits */
  65         struct object_array boundary_commits;
  66
  67         /* The end-points specified by the end user */
  68         struct rev_cmdline_info cmdline;
  69
  70         /* excluding from --branches, --refs, etc. expansion */
  71         struct string_list *ref_excludes;
  72
  73         /* Basic information */
  74         const char *prefix;
  75         const char *def;
  76         struct pathspec prune_data;
  77
  78         /*
  79          * Whether the arguments parsed by setup_revisions() included any
  80          * "input" revisions that might still have yielded an empty pending
  81          * list (e.g., patterns like "--all" or "--glob").
  82          */
  83         int rev_input_given;
  84
  85         /* topo-sort */
  86         enum rev_sort_order sort_order;
  87
  88         unsigned int early_output;
  89
  90         unsigned int    ignore_missing:1,
  91                         ignore_missing_links:1;
  92
  93         /* Traversal flags */
  94         unsigned int    dense:1,
  95                         prune:1,
  96                         no_walk:2,
  97                         remove_empty_trees:1,
  98                         simplify_history:1,
  99                         topo_order:1,
 100                         simplify_merges:1,
 101                         simplify_by_decoration:1,
 102                         single_worktree:1,
 103                         tag_objects:1,
 104                         tree_objects:1,
 105                         blob_objects:1,
 106                         verify_objects:1,
 107                         edge_hint:1,
 108                         edge_hint_aggressive:1,
 109                         limited:1,
 110                         unpacked:1,
 111                         boundary:2,
 112                         count:1,
 113                         left_right:1,
 114                         left_only:1,
 115                         right_only:1,
 116                         rewrite_parents:1,
 117                         print_parents:1,
 118                         show_decorations:1,
 119                         reverse:1,
 120                         reverse_output_stage:1,
 121                         cherry_pick:1,
 122                         cherry_mark:1,
 123                         bisect:1,
 124                         ancestry_path:1,
 125                         first_parent_only:1,
 126                         line_level_traverse:1,
 127                         tree_blobs_in_commit_order:1,
 128
 129                         /* for internal use only */
 130                         exclude_promisor_objects:1;
 131
 132         /* Diff flags */
 133         unsigned int    diff:1,
 134                         full_diff:1,
 135                         show_root_diff:1,
 136                         no_commit_id:1,
 137                         verbose_header:1,
 138                         ignore_merges:1,
 139                         combine_merges:1,
 140                         dense_combined_merges:1,
 141                         always_show_header:1;
 142
 143         /* Format info */
 144         unsigned int    shown_one:1,
 145                         shown_dashes:1,
 146                         show_merge:1,
 147                         show_notes:1,
 148                         show_notes_given:1,
 149                         show_signature:1,
 150                         pretty_given:1,
 151                         abbrev_commit:1,
 152                         abbrev_commit_given:1,
 153                         zero_commit:1,
 154                         use_terminator:1,
 155                         missing_newline:1,
 156                         date_mode_explicit:1,
 157                         preserve_subject:1;
 158         unsigned int    disable_stdin:1;
 159         /* --show-linear-break */
 160         unsigned int    track_linear:1,
 161                         track_first_time:1,
 162                         linear:1;
 163
 164         struct date_mode date_mode;
 165         int             expand_tabs_in_log; /* unset if negative */
 166         int             expand_tabs_in_log_default;
 167
 168         unsigned int    abbrev;
 169         enum cmit_fmt   commit_format;
 170         struct log_info *loginfo;
 171         int             nr, total;
 172         const char      *mime_boundary;
 173         const char      *patch_suffix;
 174         int             numbered_files;
 175         int             reroll_count;
 176         char            *message_id;
 177         struct ident_split from_ident;
 178         struct string_list *ref_message_ids;
 179         int             add_signoff;
 180         const char      *extra_headers;
 181         const char      *log_reencode;
 182         const char      *subject_prefix;
 183         int             no_inline;
 184         int             show_log_size;
 185         struct string_list *mailmap;
 186
 187         /* Filter by commit log message */
 188         struct grep_opt grep_filter;
 189         /* Negate the match of grep_filter */
 190         int invert_grep;
 191
 192         /* Display history graph */
 193         struct git_graph *graph;
 194
 195         /* special limits */
 196         int skip_count;
 197         int max_count;
 198         timestamp_t max_age;
 199         timestamp_t min_age;
 200         int min_parents;
 201         int max_parents;
 202         int (*include_check)(struct commit *, void *);
 203         void *include_check_data;
 204
 205         /* diff info for patches and for paths limiting */
 206         struct diff_options diffopt;
 207         struct diff_options pruning;
 208
 209         struct reflog_walk_info *reflog_info;
 210         struct decoration children;
 211         struct decoration merge_simplification;
 212         struct decoration treesame;
 213
 214         /* notes-specific options: which refs to show */
 215         struct display_notes_opt notes_opt;
 216
 217         /* commit counts */
 218         int count_left;
 219         int count_right;
 220         int count_same;
 221
 222         /* line level range that we are chasing */
 223         struct decoration line_log_data;
 224
 225         /* copies of the parent lists, for --full-diff display */
 226         struct saved_parents *saved_parents_slab;
 227
 228         struct commit_list *previous_parents;
 229         const char *break_bar;
 230
 231         struct revision_sources *sources;
 232 };
 233
 234 int ref_excluded(struct string_list *, const char *path);
 235 void clear_ref_exclusion(struct string_list **);
 236 void add_ref_exclusion(struct string_list **, const char *exclude);
 237
 238
 239 #define REV_TREE_SAME           0
 240 #define REV_TREE_NEW            1       /* Only new files */
 241 #define REV_TREE_OLD            2       /* Only files removed */
 242 #define REV_TREE_DIFFERENT      3       /* Mixed changes */
 243
 244 /* revision.c */
 245 typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
 246 extern volatile show_early_output_fn_t show_early_output;
 247
 248 struct setup_revision_opt {
 249         const char *def;
 250         void (*tweak)(struct rev_info *, struct setup_revision_opt *);
 251         const char *submodule;
 252         int assume_dashdash;
 253         unsigned revarg_opt;
 254 };
 255
 256 void init_revisions(struct rev_info *revs, const char *prefix);
 257 int setup_revisions(int argc, const char **argv, struct rev_info *revs,
 258                     struct setup_revision_opt *);
 259 void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
 260                         const struct option *options,
 261                         const char * const usagestr[]);
 262 #define REVARG_CANNOT_BE_FILENAME 01
 263 #define REVARG_COMMITTISH 02
 264 int handle_revision_arg(const char *arg, struct rev_info *revs,
 265                         int flags, unsigned revarg_opt);
 266
 267 void reset_revision_walk(void);
 268 int prepare_revision_walk(struct rev_info *revs);
 269 struct commit *get_revision(struct rev_info *revs);
 270 char *get_revision_mark(const struct rev_info *revs,
 271                         const struct commit *commit);
 272 void put_revision_mark(const struct rev_info *revs,
 273                        const struct commit *commit);
 274
 275 void mark_parents_uninteresting(struct commit *commit);
 276 void mark_tree_uninteresting(struct tree *tree);
 277
 278 void show_object_with_name(FILE *, struct object *, const char *);
 279
 280 void add_pending_object(struct rev_info *revs,
 281                         struct object *obj, const char *name);
 282 void add_pending_oid(struct rev_info *revs,
 283                      const char *name, const struct object_id *oid,
 284                      unsigned int flags);
 285
 286 void add_head_to_pending(struct rev_info *);
 287 void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
 288 void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
 289
 290 enum commit_action {
 291         commit_ignore,
 292         commit_show,
 293         commit_error
 294 };
 295
 296 enum commit_action get_commit_action(struct rev_info *revs,
 297                                      struct commit *commit);
 298 enum commit_action simplify_commit(struct rev_info *revs,
 299                                    struct commit *commit);
 300
 301 enum rewrite_result {
 302         rewrite_one_ok,
 303         rewrite_one_noparents,
 304         rewrite_one_error
 305 };
 306
 307 typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
 308
 309 int rewrite_parents(struct rev_info *revs,
 310                     struct commit *commit,
 311                     rewrite_parent_fn_t rewrite_parent);
 312
 313 /*
 314  * The log machinery saves the original parent list so that
 315  * get_saved_parents() can later tell what the real parents of the
 316  * commits are, when commit->parents has been modified by history
 317  * simpification.
 318  *
 319  * get_saved_parents() will transparently return commit->parents if
 320  * history simplification is off.
 321  */
 322 struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
 323
 324 #endif