Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 Junio C Hamano |
| 3 | */ |
Junio C Hamano | e0173ad | 2007-04-28 23:38:52 -0700 | [diff] [blame] | 4 | #ifndef DIFFCORE_H |
| 5 | #define DIFFCORE_H |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 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 | */ |
Junio C Hamano | eeaa460 | 2005-06-03 01:40:28 -0700 | [diff] [blame] | 11 | |
| 12 | /* We internally use unsigned short as the score value, |
| 13 | * and rely on an int capable to hold 32-bits. -B can take |
| 14 | * -Bmerge_score/break_score format and the two scores are |
| 15 | * passed around in one int (high 16-bit for merge and low 16-bit |
| 16 | * for break). |
| 17 | */ |
Junio C Hamano | ee3d299 | 2006-01-15 21:08:42 -0800 | [diff] [blame] | 18 | #define MAX_SCORE 60000.0 |
Junio C Hamano | f345b0a | 2005-05-30 00:08:37 -0700 | [diff] [blame] | 19 | #define DEFAULT_RENAME_SCORE 30000 /* rename/copy similarity minimum (50%) */ |
Junio C Hamano | 4d0f39c | 2006-03-04 01:03:53 -0800 | [diff] [blame] | 20 | #define DEFAULT_BREAK_SCORE 30000 /* minimum for break to happen (50%) */ |
| 21 | #define DEFAULT_MERGE_SCORE 36000 /* maximum for break-merge to happen 60%) */ |
Junio C Hamano | eeaa460 | 2005-06-03 01:40:28 -0700 | [diff] [blame] | 22 | |
| 23 | #define MINIMUM_BREAK_SIZE 400 /* do not break a file smaller than this */ |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 24 | |
Jeff King | 122aa6f | 2008-10-05 17:43:36 -0400 | [diff] [blame] | 25 | struct userdiff_driver; |
| 26 | |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 27 | struct diff_filespec { |
| 28 | unsigned char sha1[20]; |
| 29 | char *path; |
| 30 | void *data; |
Junio C Hamano | c06c796 | 2006-03-12 03:22:10 -0800 | [diff] [blame] | 31 | void *cnt_data; |
Junio C Hamano | e0e324a | 2007-07-07 01:49:58 -0700 | [diff] [blame] | 32 | const char *funcname_pattern_ident; |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 33 | unsigned long size; |
Linus Torvalds | 9fb8841 | 2007-10-25 11:19:10 -0700 | [diff] [blame] | 34 | int count; /* Reference count */ |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 35 | int xfrm_flags; /* for use by the xfrm */ |
Linus Torvalds | 6447971 | 2007-10-25 11:20:56 -0700 | [diff] [blame] | 36 | int rename_used; /* Count of rename users */ |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 37 | unsigned short mode; /* file mode */ |
| 38 | unsigned sha1_valid : 1; /* if true, use sha1 and trust mode; |
| 39 | * if false, use the name and read from |
| 40 | * the filesystem. |
| 41 | */ |
Junio C Hamano | dc7090e | 2005-06-12 17:23:15 -0700 | [diff] [blame] | 42 | #define DIFF_FILE_VALID(spec) (((spec)->mode) != 0) |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 43 | unsigned should_free : 1; /* data should be free()'ed */ |
| 44 | unsigned should_munmap : 1; /* data should be munmap()'ed */ |
Jeff King | 122aa6f | 2008-10-05 17:43:36 -0400 | [diff] [blame] | 45 | |
| 46 | struct userdiff_driver *driver; |
| 47 | /* data should be considered "binary"; -1 means "don't know yet" */ |
| 48 | int is_binary; |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | extern struct diff_filespec *alloc_filespec(const char *); |
Linus Torvalds | 9fb8841 | 2007-10-25 11:19:10 -0700 | [diff] [blame] | 52 | extern void free_filespec(struct diff_filespec *); |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 53 | extern void fill_filespec(struct diff_filespec *, const unsigned char *, |
| 54 | unsigned short); |
| 55 | |
Junio C Hamano | f0c6b2a | 2005-05-27 15:56:38 -0700 | [diff] [blame] | 56 | extern int diff_populate_filespec(struct diff_filespec *, int); |
Junio C Hamano | 19397b4 | 2005-09-14 14:06:50 -0700 | [diff] [blame] | 57 | extern void diff_free_filespec_data(struct diff_filespec *); |
Junio C Hamano | 8ae92e6 | 2007-10-02 21:01:03 -0700 | [diff] [blame] | 58 | extern void diff_free_filespec_blob(struct diff_filespec *); |
Junio C Hamano | 29a3eef | 2007-07-06 00:18:54 -0700 | [diff] [blame] | 59 | extern int diff_filespec_is_binary(struct diff_filespec *); |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 60 | |
Junio C Hamano | 52e9578 | 2005-05-21 02:40:01 -0700 | [diff] [blame] | 61 | struct diff_filepair { |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 62 | struct diff_filespec *one; |
| 63 | struct diff_filespec *two; |
Junio C Hamano | 01c4e70 | 2005-05-29 16:56:48 -0700 | [diff] [blame] | 64 | unsigned short int score; |
Yann Dirson | a5a323f | 2008-11-02 14:37:28 +0100 | [diff] [blame] | 65 | char status; /* M C R A D U etc. (see Documentation/diff-format.txt or DIFF_STATUS_* in diff.h) */ |
Junio C Hamano | f345b0a | 2005-05-30 00:08:37 -0700 | [diff] [blame] | 66 | unsigned broken_pair : 1; |
Junio C Hamano | ef67768 | 2006-08-03 12:01:01 -0700 | [diff] [blame] | 67 | unsigned renamed_pair : 1; |
Junio C Hamano | e9c8409 | 2007-01-05 01:25:18 -0800 | [diff] [blame] | 68 | unsigned is_unmerged : 1; |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 69 | }; |
Junio C Hamano | e9c8409 | 2007-01-05 01:25:18 -0800 | [diff] [blame] | 70 | #define DIFF_PAIR_UNMERGED(p) ((p)->is_unmerged) |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 71 | |
Junio C Hamano | ef67768 | 2006-08-03 12:01:01 -0700 | [diff] [blame] | 72 | #define DIFF_PAIR_RENAME(p) ((p)->renamed_pair) |
Junio C Hamano | 01c4e70 | 2005-05-29 16:56:48 -0700 | [diff] [blame] | 73 | |
Junio C Hamano | f345b0a | 2005-05-30 00:08:37 -0700 | [diff] [blame] | 74 | #define DIFF_PAIR_BROKEN(p) \ |
| 75 | ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \ |
| 76 | ((p)->broken_pair != 0) ) |
| 77 | |
Junio C Hamano | 96716a1 | 2005-05-25 15:07:08 -0700 | [diff] [blame] | 78 | #define DIFF_PAIR_TYPE_CHANGED(p) \ |
| 79 | ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode)) |
| 80 | |
Junio C Hamano | 4130b99 | 2005-05-26 02:24:30 -0700 | [diff] [blame] | 81 | #define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode) |
| 82 | |
Junio C Hamano | 226406f | 2005-05-27 15:50:30 -0700 | [diff] [blame] | 83 | extern void diff_free_filepair(struct diff_filepair *); |
| 84 | |
Junio C Hamano | f7c1512 | 2005-05-22 21:26:09 -0700 | [diff] [blame] | 85 | extern int diff_unmodified_pair(struct diff_filepair *); |
| 86 | |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 87 | struct diff_queue_struct { |
Junio C Hamano | 52e9578 | 2005-05-21 02:40:01 -0700 | [diff] [blame] | 88 | struct diff_filepair **queue; |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 89 | int alloc; |
| 90 | int nr; |
| 91 | }; |
| 92 | |
Junio C Hamano | 38c6f78 | 2005-05-21 19:40:36 -0700 | [diff] [blame] | 93 | extern struct diff_queue_struct diff_queued_diff; |
Junio C Hamano | 52e9578 | 2005-05-21 02:40:01 -0700 | [diff] [blame] | 94 | extern struct diff_filepair *diff_queue(struct diff_queue_struct *, |
| 95 | struct diff_filespec *, |
| 96 | struct diff_filespec *); |
Junio C Hamano | 6b14d7f | 2005-05-22 10:04:37 -0700 | [diff] [blame] | 97 | extern void diff_q(struct diff_queue_struct *, struct diff_filepair *); |
Junio C Hamano | f7c1512 | 2005-05-22 21:26:09 -0700 | [diff] [blame] | 98 | |
Junio C Hamano | ce24067 | 2005-06-03 01:36:43 -0700 | [diff] [blame] | 99 | extern void diffcore_break(int); |
Junio C Hamano | 8082d8d | 2005-09-21 00:18:27 -0700 | [diff] [blame] | 100 | extern void diffcore_rename(struct diff_options *); |
Junio C Hamano | eeaa460 | 2005-06-03 01:40:28 -0700 | [diff] [blame] | 101 | extern void diffcore_merge_broken(void); |
Junio C Hamano | ce24067 | 2005-06-03 01:36:43 -0700 | [diff] [blame] | 102 | extern void diffcore_pickaxe(const char *needle, int opts); |
| 103 | extern void diffcore_order(const char *orderfile); |
| 104 | |
Junio C Hamano | 25d5ea4 | 2005-05-24 01:10:48 -0700 | [diff] [blame] | 105 | #define DIFF_DEBUG 0 |
| 106 | #if DIFF_DEBUG |
| 107 | void diff_debug_filespec(struct diff_filespec *, int, const char *); |
| 108 | void diff_debug_filepair(const struct diff_filepair *, int); |
| 109 | void diff_debug_queue(const char *, struct diff_queue_struct *); |
| 110 | #else |
| 111 | #define diff_debug_filespec(a,b,c) do {} while(0) |
| 112 | #define diff_debug_filepair(a,b) do {} while(0) |
| 113 | #define diff_debug_queue(a,b) do {} while(0) |
| 114 | #endif |
| 115 | |
Junio C Hamano | d8c3d03 | 2007-06-28 22:54:37 -0700 | [diff] [blame] | 116 | extern int diffcore_count_changes(struct diff_filespec *src, |
| 117 | struct diff_filespec *dst, |
Junio C Hamano | c06c796 | 2006-03-12 03:22:10 -0800 | [diff] [blame] | 118 | void **src_count_p, |
| 119 | void **dst_count_p, |
Junio C Hamano | 6541675 | 2006-02-28 16:01:36 -0800 | [diff] [blame] | 120 | unsigned long delta_limit, |
| 121 | unsigned long *src_copied, |
| 122 | unsigned long *literal_added); |
| 123 | |
Junio C Hamano | 427dcb4 | 2005-05-21 02:39:09 -0700 | [diff] [blame] | 124 | #endif |