revision.h

   1 #ifndef REVISION_H
   2 #define REVISION_H
   3
   4 #include "parse-options.h"
   5 #include "grep.h"
   6 #include "notes.h"
   7 #include "commit.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         /* topo-sort */
  75         enum rev_sort_order sort_order;
  76
  77         unsigned int early_output;
  78
  79         unsigned int    ignore_missing:1,
  80                         ignore_missing_links:1;
  81
  82         /* Traversal flags */
  83         unsigned int    dense:1,
  84                         prune:1,
  85                         no_walk:2,
  86                         show_all:1,
  87                         remove_empty_trees:1,
  88                         simplify_history:1,
  89                         topo_order:1,
  90                         simplify_merges:1,
  91                         simplify_by_decoration:1,
  92                         tag_objects:1,
  93                         tree_objects:1,
  94                         blob_objects:1,
  95                         verify_objects:1,
  96                         edge_hint:1,
  97                         edge_hint_aggressive:1,
  98                         limited:1,
  99                         unpacked:1,
 100                         boundary:2,
 101                         count:1,
 102                         left_right:1,
 103                         left_only:1,
 104                         right_only:1,
 105                         rewrite_parents:1,
 106                         print_parents:1,
 107                         show_source:1,
 108                         show_decorations:1,
 109                         reverse:1,
 110                         reverse_output_stage:1,
 111                         cherry_pick:1,
 112                         cherry_mark:1,
 113                         bisect:1,
 114                         ancestry_path:1,
 115                         first_parent_only:1,
 116                         line_level_traverse:1;
 117
 118         /* Diff flags */
 119         unsigned int    diff:1,
 120                         full_diff:1,
 121                         show_root_diff:1,
 122                         no_commit_id:1,
 123                         verbose_header:1,
 124                         ignore_merges:1,
 125                         combine_merges:1,
 126                         dense_combined_merges:1,
 127                         always_show_header:1;
 128
 129         /* Format info */
 130         unsigned int    shown_one:1,
 131                         shown_dashes:1,
 132                         show_merge:1,
 133                         show_notes:1,
 134                         show_notes_given:1,
 135                         show_signature:1,
 136                         pretty_given:1,
 137                         abbrev_commit:1,
 138                         abbrev_commit_given:1,
 139                         zero_commit:1,
 140                         use_terminator:1,
 141                         missing_newline:1,
 142                         date_mode_explicit:1,
 143                         preserve_subject:1;
 144         unsigned int    disable_stdin:1;
 145         unsigned int    leak_pending:1;
 146         /* --show-linear-break */
 147         unsigned int    track_linear:1,
 148                         track_first_time:1,
 149                         linear:1;
 150
 151         struct date_mode date_mode;
 152         int             expand_tabs_in_log; /* unset if negative */
 153         int             expand_tabs_in_log_default;
 154
 155         unsigned int    abbrev;
 156         enum cmit_fmt   commit_format;
 157         struct log_info *loginfo;
 158         int             nr, total;
 159         const char      *mime_boundary;
 160         const char      *patch_suffix;
 161         int             numbered_files;
 162         int             reroll_count;
 163         char            *message_id;
 164         struct ident_split from_ident;
 165         struct string_list *ref_message_ids;
 166         int             add_signoff;
 167         const char      *extra_headers;
 168         const char      *log_reencode;
 169         const char      *subject_prefix;
 170         int             no_inline;
 171         int             show_log_size;
 172         struct string_list *mailmap;
 173
 174         /* Filter by commit log message */
 175         struct grep_opt grep_filter;
 176         /* Negate the match of grep_filter */
 177         int invert_grep;
 178
 179         /* Display history graph */
 180         struct git_graph *graph;
 181
 182         /* special limits */
 183         int skip_count;
 184         int max_count;
 185         unsigned long max_age;
 186         unsigned long min_age;
 187         int min_parents;
 188         int max_parents;
 189         int (*include_check)(struct commit *, void *);
 190         void *include_check_data;
 191
 192         /* diff info for patches and for paths limiting */
 193         struct diff_options diffopt;
 194         struct diff_options pruning;
 195
 196         struct reflog_walk_info *reflog_info;
 197         struct decoration children;
 198         struct decoration merge_simplification;
 199         struct decoration treesame;
 200
 201         /* notes-specific options: which refs to show */
 202         struct display_notes_opt notes_opt;
 203
 204         /* commit counts */
 205         int count_left;
 206         int count_right;
 207         int count_same;
 208
 209         /* line level range that we are chasing */
 210         struct decoration line_log_data;
 211
 212         /* copies of the parent lists, for --full-diff display */
 213         struct saved_parents *saved_parents_slab;
 214
 215         struct commit_list *previous_parents;
 216         const char *break_bar;
 217 };
 218
 219 extern int ref_excluded(struct string_list *, const char *path);
 220 void clear_ref_exclusion(struct string_list **);
 221 void add_ref_exclusion(struct string_list **, const char *exclude);
 222
 223
 224 #define REV_TREE_SAME           0
 225 #define REV_TREE_NEW            1       /* Only new files */
 226 #define REV_TREE_OLD            2       /* Only files removed */
 227 #define REV_TREE_DIFFERENT      3       /* Mixed changes */
 228
 229 /* revision.c */
 230 typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
 231 extern volatile show_early_output_fn_t show_early_output;
 232
 233 struct setup_revision_opt {
 234         const char *def;
 235         void (*tweak)(struct rev_info *, struct setup_revision_opt *);
 236         const char *submodule;
 237         int assume_dashdash;
 238         unsigned revarg_opt;
 239 };
 240
 241 extern void init_revisions(struct rev_info *revs, const char *prefix);
 242 extern int setup_revisions(int argc, const char **argv, struct rev_info *revs,
 243                            struct setup_revision_opt *);
 244 extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
 245                                const struct option *options,
 246                                const char * const usagestr[]);
 247 #define REVARG_CANNOT_BE_FILENAME 01
 248 #define REVARG_COMMITTISH 02
 249 extern int handle_revision_arg(const char *arg, struct rev_info *revs,
 250                                int flags, unsigned revarg_opt);
 251
 252 extern void reset_revision_walk(void);
 253 extern int prepare_revision_walk(struct rev_info *revs);
 254 extern struct commit *get_revision(struct rev_info *revs);
 255 extern char *get_revision_mark(const struct rev_info *revs,
 256                                const struct commit *commit);
 257 extern void put_revision_mark(const struct rev_info *revs,
 258                               const struct commit *commit);
 259
 260 extern void mark_parents_uninteresting(struct commit *commit);
 261 extern void mark_tree_uninteresting(struct tree *tree);
 262
 263 extern void show_object_with_name(FILE *, struct object *, const char *);
 264
 265 extern void add_pending_object(struct rev_info *revs,
 266                                struct object *obj, const char *name);
 267 extern void add_pending_sha1(struct rev_info *revs,
 268                              const char *name, const unsigned char *sha1,
 269                              unsigned int flags);
 270
 271 extern void add_head_to_pending(struct rev_info *);
 272 extern void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
 273 extern void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
 274
 275 enum commit_action {
 276         commit_ignore,
 277         commit_show,
 278         commit_error
 279 };
 280
 281 extern enum commit_action get_commit_action(struct rev_info *revs,
 282                                             struct commit *commit);
 283 extern enum commit_action simplify_commit(struct rev_info *revs,
 284                                           struct commit *commit);
 285
 286 enum rewrite_result {
 287         rewrite_one_ok,
 288         rewrite_one_noparents,
 289         rewrite_one_error
 290 };
 291
 292 typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
 293
 294 extern int rewrite_parents(struct rev_info *revs, struct commit *commit,
 295         rewrite_parent_fn_t rewrite_parent);
 296
 297 /*
 298  * The log machinery saves the original parent list so that
 299  * get_saved_parents() can later tell what the real parents of the
 300  * commits are, when commit->parents has been modified by history
 301  * simpification.
 302  *
 303  * get_saved_parents() will transparently return commit->parents if
 304  * history simplification is off.
 305  */
 306 extern struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
 307
 308 #endif