1/*
2 * LibXDiff by Davide Libenzi ( File Differential Library )
3 * Copyright (C) 2003 Davide Libenzi
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, see
17 * <http://www.gnu.org/licenses/>.
18 *
19 * Davide Libenzi <davidel@xmailserver.org>
20 *
21 */
22
23#if !defined(XDIFF_H)
24#define XDIFF_H
25
26#ifdef __cplusplus
27extern "C" {
28#endif /* #ifdef __cplusplus */
29
30/* xpparm_t.flags */
31#define XDF_NEED_MINIMAL (1 << 0)
32
33#define XDF_IGNORE_WHITESPACE (1 << 1)
34#define XDF_IGNORE_WHITESPACE_CHANGE (1 << 2)
35#define XDF_IGNORE_WHITESPACE_AT_EOL (1 << 3)
36#define XDF_IGNORE_CR_AT_EOL (1 << 4)
37#define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | \
38 XDF_IGNORE_WHITESPACE_CHANGE | \
39 XDF_IGNORE_WHITESPACE_AT_EOL | \
40 XDF_IGNORE_CR_AT_EOL)
41
42#define XDF_IGNORE_BLANK_LINES (1 << 7)
43
44#define XDF_PATIENCE_DIFF (1 << 14)
45#define XDF_HISTOGRAM_DIFF (1 << 15)
46#define XDF_DIFF_ALGORITHM_MASK (XDF_PATIENCE_DIFF | XDF_HISTOGRAM_DIFF)
47#define XDF_DIFF_ALG(x) ((x) & XDF_DIFF_ALGORITHM_MASK)
48
49#define XDF_INDENT_HEURISTIC (1 << 23)
50
51/* xdemitconf_t.flags */
52#define XDL_EMIT_FUNCNAMES (1 << 0)
53#define XDL_EMIT_FUNCCONTEXT (1 << 2)
54
55/* merge simplification levels */
56#define XDL_MERGE_MINIMAL 0
57#define XDL_MERGE_EAGER 1
58#define XDL_MERGE_ZEALOUS 2
59#define XDL_MERGE_ZEALOUS_ALNUM 3
60
61/* merge favor modes */
62#define XDL_MERGE_FAVOR_OURS 1
63#define XDL_MERGE_FAVOR_THEIRS 2
64#define XDL_MERGE_FAVOR_UNION 3
65
66/* merge output styles */
67#define XDL_MERGE_DIFF3 1
68
69typedef struct s_mmfile {
70 char *ptr;
71 long size;
72} mmfile_t;
73
74typedef struct s_mmbuffer {
75 char *ptr;
76 long size;
77} mmbuffer_t;
78
79typedef struct s_xpparam {
80 unsigned long flags;
81
82 /* See Documentation/diff-options.txt. */
83 char **anchors;
84 size_t anchors_nr;
85} xpparam_t;
86
87typedef struct s_xdemitcb {
88 void *priv;
89 int (*outf)(void *, mmbuffer_t *, int);
90} xdemitcb_t;
91
92typedef long (*find_func_t)(const char *line, long line_len, char *buffer, long buffer_size, void *priv);
93
94typedef int (*xdl_emit_hunk_consume_func_t)(long start_a, long count_a,
95 long start_b, long count_b,
96 void *cb_data);
97
98typedef struct s_xdemitconf {
99 long ctxlen;
100 long interhunkctxlen;
101 unsigned long flags;
102 find_func_t find_func;
103 void *find_func_priv;
104 xdl_emit_hunk_consume_func_t hunk_func;
105} xdemitconf_t;
106
107typedef struct s_bdiffparam {
108 long bsize;
109} bdiffparam_t;
110
111#include "../memory.h"
112
113#define xdl_malloc(x) xmalloc((x))
114#define xdl_free(ptr) xfree(ptr)
115#define xdl_realloc(ptr,x) xrealloc((ptr),(x))
116
117void *xdl_mmfile_first(mmfile_t *mmf, long *size);
118long xdl_mmfile_size(mmfile_t *mmf);
119
120int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
121 xdemitconf_t const *xecfg, xdemitcb_t *ecb);
122
123typedef struct s_xmparam {
124 xpparam_t xpp;
125 int marker_size;
126 int level;
127 int favor;
128 int style;
129 const char *ancestor; /* label for orig */
130 const char *file1; /* label for mf1 */
131 const char *file2; /* label for mf2 */
132} xmparam_t;
133
134#define DEFAULT_CONFLICT_MARKER_SIZE 7
135
136int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,
137 xmparam_t const *xmp, mmbuffer_t *result);
138
139#ifdef __cplusplus
140}
141#endif /* #ifdef __cplusplus */
142
143#endif /* #if !defined(XDIFF_H) */
144