line-log.h

   1 #ifndef LINE_LOG_H
   2 #define LINE_LOG_H
   3
   4 #include "diffcore.h"
   5
   6 struct rev_info;
   7 struct commit;
   8
   9 /* A range [start,end].  Lines are numbered starting at 0, and the
  10  * ranges include start but exclude end. */
  11 struct range {
  12         long start, end;
  13 };
  14
  15 /* A set of ranges.  The ranges must always be disjoint and sorted. */
  16 struct range_set {
  17         int alloc, nr;
  18         struct range *ranges;
  19 };
  20
  21 /* A diff, encoded as the set of pre- and post-image ranges where the
  22  * files differ. A pair of ranges corresponds to a hunk. */
  23 struct diff_ranges {
  24         struct range_set parent;
  25         struct range_set target;
  26 };
  27
  28 extern void range_set_init(struct range_set *, size_t prealloc);
  29 extern void range_set_release(struct range_set *);
  30 /* Range includes start; excludes end */
  31 extern void range_set_append_unsafe(struct range_set *, long start, long end);
  32 /* New range must begin at or after end of last added range */
  33 extern void range_set_append(struct range_set *, long start, long end);
  34 /*
  35  * In-place pass of sorting and merging the ranges in the range set,
  36  * to sort and make the ranges disjoint.
  37  */
  38 extern void sort_and_merge_range_set(struct range_set *);
  39
  40 /* Linked list of interesting files and their associated ranges.  The
  41  * list must be kept sorted by path.
  42  *
  43  * For simplicity, even though this is highly redundant, each
  44  * line_log_data owns its 'path'.
  45  */
  46 struct line_log_data {
  47         struct line_log_data *next;
  48         char *path;
  49         char status;
  50         struct range_set ranges;
  51         int arg_alloc, arg_nr;
  52         const char **args;
  53         struct diff_filepair *pair;
  54         struct diff_ranges diff;
  55 };
  56
  57 extern void line_log_init(struct rev_info *rev, const char *prefix, struct string_list *args);
  58
  59 extern int line_log_filter(struct rev_info *rev);
  60
  61 extern int line_log_print(struct rev_info *rev, struct commit *commit);
  62
  63 #endif /* LINE_LOG_H */