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#define RENAME_SRC_GONE 02 16#define RENAME_SCORE_SHIFT 8 17 18struct diff_filespec { 19 unsigned char sha1[20]; 20 char *path; 21 void *data; 22 unsigned long size; 23 int xfrm_flags; /* for use by the xfrm */ 24 unsigned short mode; /* file mode */ 25 unsigned sha1_valid : 1; /* if true, use sha1 and trust mode; 26 * if false, use the name and read from 27 * the filesystem. 28 */ 29#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) 30 unsigned should_free : 1; /* data should be free()'ed */ 31 unsigned should_munmap : 1; /* data should be munmap()'ed */ 32}; 33 34extern struct diff_filespec *alloc_filespec(const char *); 35extern void fill_filespec(struct diff_filespec *, const unsigned char *, 36 unsigned short); 37 38extern int diff_populate_filespec(struct diff_filespec *); 39extern void diff_free_filespec_data(struct diff_filespec *); 40 41struct diff_filepair { 42 struct diff_filespec *one; 43 struct diff_filespec *two; 44 int score; /* only valid when one and two are different paths */ 45 int orig_order; /* the original order of insertion into the queue */ 46 int rename_rank; /* rename/copy dependency needs to enforce 47 * certain ordering of patches that later 48 * diffcore transformations should not break. 49 */ 50 int status; /* M C R N D U (see Documentation/diff-format.txt) */ 51}; 52#define DIFF_PAIR_UNMERGED(p) \ 53 (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two)) 54 55extern int diff_unmodified_pair(struct diff_filepair *); 56 57struct diff_queue_struct { 58 struct diff_filepair **queue; 59 int alloc; 60 int nr; 61}; 62 63extern struct diff_queue_struct diff_queued_diff; 64extern struct diff_filepair *diff_queue(struct diff_queue_struct *, 65 struct diff_filespec *, 66 struct diff_filespec *); 67extern void diff_q(struct diff_queue_struct *, struct diff_filepair *); 68 69extern int diff_needs_to_stay(struct diff_queue_struct *, int, 70 struct diff_filespec *); 71 72#endif