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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 | */ | |
11 | #define MAX_SCORE 10000 | |
12 | #define DEFAULT_MINIMUM_SCORE 5000 | |
13 | ||
14 | #define RENAME_DST_MATCHED 01 | |
427dcb4b JH |
15 | |
16 | struct 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 | */ | |
81e50eab | 27 | #define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) |
427dcb4b JH |
28 | unsigned should_free : 1; /* data should be free()'ed */ |
29 | unsigned should_munmap : 1; /* data should be munmap()'ed */ | |
30 | }; | |
31 | ||
32 | extern struct diff_filespec *alloc_filespec(const char *); | |
33 | extern void fill_filespec(struct diff_filespec *, const unsigned char *, | |
34 | unsigned short); | |
35 | ||
f0c6b2a2 | 36 | extern int diff_populate_filespec(struct diff_filespec *, int); |
427dcb4b JH |
37 | extern void diff_free_filespec_data(struct diff_filespec *); |
38 | ||
52e95789 | 39 | struct diff_filepair { |
427dcb4b JH |
40 | struct diff_filespec *one; |
41 | struct diff_filespec *two; | |
15d061b4 JH |
42 | unsigned short int score; /* only valid when one and two are |
43 | * different paths | |
44 | */ | |
45 | char source_stays; /* all of R/C are copies */ | |
46 | char status; /* M C R N D U (see Documentation/diff-format.txt) */ | |
427dcb4b | 47 | }; |
6b14d7fa JH |
48 | #define DIFF_PAIR_UNMERGED(p) \ |
49 | (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two)) | |
427dcb4b | 50 | |
96716a19 JH |
51 | #define DIFF_PAIR_TYPE_CHANGED(p) \ |
52 | ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode)) | |
53 | ||
4130b995 JH |
54 | #define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode) |
55 | ||
56 | #define DIFF_FILE_CANON_MODE(mode) \ | |
57 | (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \ | |
58 | S_ISLNK(mode) ? S_IFLNK : S_IFDIR) | |
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 |