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427dcb4b JH |
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 | */ | |
f345b0a0 JH |
11 | #define MAX_SCORE 60000 |
12 | #define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */ | |
13 | #define DEFAULT_BREAK_SCORE 59400 /* minimum for break to happen (99%)*/ | |
427dcb4b | 14 | |
427dcb4b JH |
15 | struct diff_filespec { |
16 | unsigned char sha1[20]; | |
17 | char *path; | |
18 | void *data; | |
19 | unsigned long size; | |
20 | int xfrm_flags; /* for use by the xfrm */ | |
21 | unsigned short mode; /* file mode */ | |
22 | unsigned sha1_valid : 1; /* if true, use sha1 and trust mode; | |
23 | * if false, use the name and read from | |
24 | * the filesystem. | |
25 | */ | |
81e50eab | 26 | #define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) |
427dcb4b JH |
27 | unsigned should_free : 1; /* data should be free()'ed */ |
28 | unsigned should_munmap : 1; /* data should be munmap()'ed */ | |
29 | }; | |
30 | ||
31 | extern struct diff_filespec *alloc_filespec(const char *); | |
32 | extern void fill_filespec(struct diff_filespec *, const unsigned char *, | |
33 | unsigned short); | |
34 | ||
f0c6b2a2 | 35 | extern int diff_populate_filespec(struct diff_filespec *, int); |
427dcb4b JH |
36 | extern void diff_free_filespec_data(struct diff_filespec *); |
37 | ||
52e95789 | 38 | struct diff_filepair { |
427dcb4b JH |
39 | struct diff_filespec *one; |
40 | struct diff_filespec *two; | |
01c4e70f | 41 | unsigned short int score; |
15d061b4 | 42 | char status; /* M C R N D U (see Documentation/diff-format.txt) */ |
f345b0a0 JH |
43 | unsigned source_stays : 1; /* all of R/C are copies */ |
44 | unsigned broken_pair : 1; | |
427dcb4b | 45 | }; |
6b14d7fa JH |
46 | #define DIFF_PAIR_UNMERGED(p) \ |
47 | (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two)) | |
427dcb4b | 48 | |
01c4e70f JH |
49 | #define DIFF_PAIR_RENAME(p) (strcmp((p)->one->path, (p)->two->path)) |
50 | ||
f345b0a0 JH |
51 | #define DIFF_PAIR_BROKEN(p) \ |
52 | ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \ | |
53 | ((p)->broken_pair != 0) ) | |
54 | ||
96716a19 JH |
55 | #define DIFF_PAIR_TYPE_CHANGED(p) \ |
56 | ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode)) | |
57 | ||
4130b995 JH |
58 | #define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode) |
59 | ||
226406f6 JH |
60 | extern void diff_free_filepair(struct diff_filepair *); |
61 | ||
f7c1512a JH |
62 | extern int diff_unmodified_pair(struct diff_filepair *); |
63 | ||
427dcb4b | 64 | struct diff_queue_struct { |
52e95789 | 65 | struct diff_filepair **queue; |
427dcb4b JH |
66 | int alloc; |
67 | int nr; | |
68 | }; | |
69 | ||
38c6f780 | 70 | extern struct diff_queue_struct diff_queued_diff; |
52e95789 JH |
71 | extern struct diff_filepair *diff_queue(struct diff_queue_struct *, |
72 | struct diff_filespec *, | |
73 | struct diff_filespec *); | |
6b14d7fa | 74 | extern void diff_q(struct diff_queue_struct *, struct diff_filepair *); |
f7c1512a | 75 | |
25d5ea41 JH |
76 | #define DIFF_DEBUG 0 |
77 | #if DIFF_DEBUG | |
78 | void diff_debug_filespec(struct diff_filespec *, int, const char *); | |
79 | void diff_debug_filepair(const struct diff_filepair *, int); | |
80 | void diff_debug_queue(const char *, struct diff_queue_struct *); | |
81 | #else | |
82 | #define diff_debug_filespec(a,b,c) do {} while(0) | |
83 | #define diff_debug_filepair(a,b) do {} while(0) | |
84 | #define diff_debug_queue(a,b) do {} while(0) | |
85 | #endif | |
86 | ||
427dcb4b | 87 | #endif |