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