Andrew's git - gitweb.git/blob

   1/*
   2 * Copyright (C) 2005 Junio C Hamano
   3 */
   4#ifndef _DIFFCORE_H_
   5#define _DIFFCORE_H_
   6
   7/* This header file is internal between diff.c and its diff transformers
   8 * (e.g. diffcore-rename, diffcore-pickaxe).  Never include this header
   9 * in anything else.
  10 */
  11#define MAX_SCORE 10000
  12#define DEFAULT_MINIMUM_SCORE 5000
  13
  14#define RENAME_DST_MATCHED 01
  15
  16struct diff_filespec {
  17        unsigned char sha1[20];
  18        char *path;
  19        void *data;
  20        unsigned long size;
  21        int xfrm_flags;          /* for use by the xfrm */
  22        unsigned short mode;     /* file mode */
  23        unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
  24                                  * if false, use the name and read from
  25                                  * the filesystem.
  26                                  */
  27#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
  28        unsigned should_free : 1; /* data should be free()'ed */
  29        unsigned should_munmap : 1; /* data should be munmap()'ed */
  30};
  31
  32extern struct diff_filespec *alloc_filespec(const char *);
  33extern void fill_filespec(struct diff_filespec *, const unsigned char *,
  34                          unsigned short);
  35
  36extern int diff_populate_filespec(struct diff_filespec *);
  37extern void diff_free_filespec_data(struct diff_filespec *);
  38
  39struct diff_filepair {
  40        struct diff_filespec *one;
  41        struct diff_filespec *two;
  42        int score; /* only valid when one and two are different paths */
  43        int orig_order; /* the original order of insertion into the queue */
  44        int rename_rank; /* rename/copy dependency needs to enforce
  45                          * certain ordering of patches that later
  46                          * diffcore transformations should not break.
  47                          */
  48        int status; /* M C R N D U (see Documentation/diff-format.txt) */
  49};
  50#define DIFF_PAIR_UNMERGED(p) \
  51        (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
  52
  53extern int diff_unmodified_pair(struct diff_filepair *);
  54
  55struct diff_queue_struct {
  56        struct diff_filepair **queue;
  57        int alloc;
  58        int nr;
  59};
  60
  61extern struct diff_queue_struct diff_queued_diff;
  62extern struct diff_filepair *diff_queue(struct diff_queue_struct *,
  63                                        struct diff_filespec *,
  64                                        struct diff_filespec *);
  65extern void diff_q(struct diff_queue_struct *, struct diff_filepair *);
  66
  67extern int diff_needs_to_stay(struct diff_queue_struct *, int,
  68                              struct diff_filespec *);
  69
  70#endif