Andrew's git - gitweb.git/blob

   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
  27extern "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_FUNCCONTEXT (1 << 2)
  48
  49#define XDL_MMB_READONLY (1 << 0)
  50
  51#define XDL_MMF_ATOMIC (1 << 0)
  52
  53#define XDL_BDOP_INS 1
  54#define XDL_BDOP_CPY 2
  55#define XDL_BDOP_INSB 3
  56
  57/* merge simplification levels */
  58#define XDL_MERGE_MINIMAL 0
  59#define XDL_MERGE_EAGER 1
  60#define XDL_MERGE_ZEALOUS 2
  61#define XDL_MERGE_ZEALOUS_ALNUM 3
  62
  63/* merge favor modes */
  64#define XDL_MERGE_FAVOR_OURS 1
  65#define XDL_MERGE_FAVOR_THEIRS 2
  66#define XDL_MERGE_FAVOR_UNION 3
  67
  68/* merge output styles */
  69#define XDL_MERGE_DIFF3 1
  70
  71typedef struct s_mmfile {
  72        char *ptr;
  73        long size;
  74} mmfile_t;
  75
  76typedef struct s_mmbuffer {
  77        char *ptr;
  78        long size;
  79} mmbuffer_t;
  80
  81typedef struct s_xpparam {
  82        unsigned long flags;
  83} xpparam_t;
  84
  85typedef struct s_xdemitcb {
  86        void *priv;
  87        int (*outf)(void *, mmbuffer_t *, int);
  88} xdemitcb_t;
  89
  90typedef long (*find_func_t)(const char *line, long line_len, char *buffer, long buffer_size, void *priv);
  91
  92typedef int (*xdl_emit_hunk_consume_func_t)(long start_a, long count_a,
  93                                            long start_b, long count_b,
  94                                            void *cb_data);
  95
  96typedef struct s_xdemitconf {
  97        long ctxlen;
  98        long interhunkctxlen;
  99        unsigned long flags;
 100        find_func_t find_func;
 101        void *find_func_priv;
 102        xdl_emit_hunk_consume_func_t hunk_func;
 103} xdemitconf_t;
 104
 105typedef struct s_bdiffparam {
 106        long bsize;
 107} bdiffparam_t;
 108
 109
 110#define xdl_malloc(x) malloc(x)
 111#define xdl_free(ptr) free(ptr)
 112#define xdl_realloc(ptr,x) realloc(ptr,x)
 113
 114void *xdl_mmfile_first(mmfile_t *mmf, long *size);
 115long xdl_mmfile_size(mmfile_t *mmf);
 116
 117int xdl_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp,
 118             xdemitconf_t const *xecfg, xdemitcb_t *ecb);
 119
 120typedef struct s_xmparam {
 121        xpparam_t xpp;
 122        int marker_size;
 123        int level;
 124        int favor;
 125        int style;
 126        const char *ancestor;   /* label for orig */
 127        const char *file1;      /* label for mf1 */
 128        const char *file2;      /* label for mf2 */
 129} xmparam_t;
 130
 131#define DEFAULT_CONFLICT_MARKER_SIZE 7
 132
 133int xdl_merge(mmfile_t *orig, mmfile_t *mf1, mmfile_t *mf2,
 134                xmparam_t const *xmp, mmbuffer_t *result);
 135
 136#ifdef __cplusplus
 137}
 138#endif /* #ifdef __cplusplus */
 139
 140#endif /* #if !defined(XDIFF_H) */