xdiff/xdiff.h

   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, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  *  Davide Libenzi <davidel@xmailserver.org>
  20  *
  21  */
  22
  23 #if !defined(XDIFF_H)
  24 #define XDIFF_H
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif /* #ifdef __cplusplus */
  29
  30
  31 #define XDF_NEED_MINIMAL (1 << 1)
  32 #define XDF_IGNORE_WHITESPACE (1 << 2)
  33 #define XDF_IGNORE_WHITESPACE_CHANGE (1 << 3)
  34 #define XDF_IGNORE_WHITESPACE_AT_EOL (1 << 4)
  35 #define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | XDF_IGNORE_WHITESPACE_CHANGE | XDF_IGNORE_WHITESPACE_AT_EOL)
  36
  37 #define XDF_PATIENCE_DIFF (1 << 5)
  38 #define XDF_HISTOGRAM_DIFF (1 << 6)
  39 #define XDF_DIFF_ALGORITHM_MASK (XDF_PATIENCE_DIFF | XDF_HISTOGRAM_DIFF)
  40 #define XDF_DIFF_ALG(x) ((x) & XDF_DIFF_ALGORITHM_MASK)
  41
  42 #define XDF_IGNORE_BLANK_LINES (1 << 7)
  43
  44 #define XDF_COMPACTION_HEURISTIC (1 << 8)
  45
  46 #define XDL_EMIT_FUNCNAMES (1 << 0)
  47 #define XDL_EMIT_COMMON (1 << 1)
  48 #define XDL_EMIT_FUNCCONTEXT (1 << 2)
  49
  50 #define XDL_MMB_READONLY (1 << 0)
  51
  52 #define XDL_MMF_ATOMIC (1 << 0)
  53
  54 #define XDL_BDOP_INS 1
  55 #define XDL_BDOP_CPY 2
  56 #define XDL_BDOP_INSB 3
  57
  58 /* merge simplification levels */
  59 #define XDL_MERGE_MINIMAL 0
  60 #define XDL_MERGE_EAGER 1
  61 #define XDL_MERGE_ZEALOUS 2
  62 #define XDL_MERGE_ZEALOUS_ALNUM 3
  63
  64 /* merge favor modes */
  65 #define XDL_MERGE_FAVOR_OURS 1
  66 #define XDL_MERGE_FAVOR_THEIRS 2
  67 #define XDL_MERGE_FAVOR_UNION 3
  68
  69 /* merge output styles */
  70 #define XDL_MERGE_DIFF3 1
  71
  72 typedef struct s_mmfile {
  73         char *ptr;
  74         long size;
  75 } mmfile_t;
  76
  77 typedef struct s_mmbuffer {
  78         char *ptr;
  79         long size;
  80 } mmbuffer_t;
  81
  82 typedef struct s_xpparam {
  83         unsigned long flags;
  84 } xpparam_t;
  85
  86 typedef struct s_xdemitcb {
  87         void *priv;
  88         int (*outf)(void *, mmbuffer_t *, int);
  89 } xdemitcb_t;
  90
  91 typedef long (*find_func_t)(const char *line, long line_len, char *buffer, long buffer_size, void *priv);
  92
  93 typedef int (*xdl_emit_hunk_consume_func_t)(long start_a, long count_a,
  94                                             long start_b, long count_b,
  95                                             void *cb_data);
  96
  97 typedef struct s_xdemitconf {
  98         long ctxlen;
  99         long interhunkctxlen;
 100         unsigned long flags;
 101         find_func_t find_func;
 102         void *find_func_priv;
 103         xdl_emit_hunk_consume_func_t hunk_func;
 104 } xdemitconf_t;
 105
 106 typedef struct s_bdiffparam {
 107         long bsize;
 108 } bdiffparam_t;
 109
 110
 111 #define xdl_malloc(x) malloc(x)
 112 #define xdl_free(ptr) free(ptr)
 113 #define xdl_realloc(ptr,x) realloc(ptr,x)
 114
 115 void *xdl_mmfile_first(mmfile_t *mmf, long *size);
 116 long xdl_mmfile_size(mmfile_t *mmf);
 117
 118 int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
 119              xdemitconf_t const *xecfg, xdemitcb_t *ecb);
 120
 121 typedef struct s_xmparam {
 122         xpparam_t xpp;
 123         int marker_size;
 124         int level;
 125         int favor;
 126         int style;
 127         const char *ancestor;   /* label for orig */
 128         const char *file1;      /* label for mf1 */
 129         const char *file2;      /* label for mf2 */
 130 } xmparam_t;
 131
 132 #define DEFAULT_CONFLICT_MARKER_SIZE 7
 133
 134 int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,
 135                 xmparam_t const *xmp, mmbuffer_t *result);
 136
 137 #ifdef __cplusplus
 138 }
 139 #endif /* #ifdef __cplusplus */
 140
 141 #endif /* #if !defined(XDIFF_H) */