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