git/line-log.h
Eric Sunshine c0babbe695 range-set: publish API for re-use by git-blame -L
git-blame is slated to accept multiple -L ranges.  git-log already
accepts multiple -L's but its implementation of range-set, which
organizes and normalizes -L ranges, is private.  Publish the small
subset of range-set API which is needed for git-blame multiple -L
support.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-08-06 14:27:20 -07:00

66 lines
1.8 KiB
C

#ifndef LINE_LOG_H
#define LINE_LOG_H
#include "diffcore.h"
struct rev_info;
struct commit;
/* A range [start,end]. Lines are numbered starting at 0, and the
* ranges include start but exclude end. */
struct range {
long start, end;
};
/* A set of ranges. The ranges must always be disjoint and sorted. */
struct range_set {
int alloc, nr;
struct range *ranges;
};
/* A diff, encoded as the set of pre- and post-image ranges where the
* files differ. A pair of ranges corresponds to a hunk. */
struct diff_ranges {
struct range_set parent;
struct range_set target;
};
extern void range_set_init(struct range_set *, size_t prealloc);
extern void range_set_release(struct range_set *);
/* Range includes start; excludes end */
extern void range_set_append_unsafe(struct range_set *, long start, long end);
/* New range must begin at or after end of last added range */
extern void range_set_append(struct range_set *, long start, long end);
/*
* In-place pass of sorting and merging the ranges in the range set,
* to sort and make the ranges disjoint.
*/
extern void sort_and_merge_range_set(struct range_set *);
/* Linked list of interesting files and their associated ranges. The
* list must be kept sorted by path.
*
* For simplicity, even though this is highly redundant, each
* line_log_data owns its 'path'.
*/
struct line_log_data {
struct line_log_data *next;
char *path;
char status;
struct range_set ranges;
int arg_alloc, arg_nr;
const char **args;
struct diff_filepair *pair;
struct diff_ranges diff;
};
extern void line_log_data_init(struct line_log_data *r);
extern void line_log_init(struct rev_info *rev, const char *prefix, struct string_list *args);
extern int line_log_filter(struct rev_info *rev);
extern int line_log_print(struct rev_info *rev, struct commit *commit);
#endif /* LINE_LOG_H */