Andrew's git - gitweb.git/blob

   1#ifndef XDIFF_INTERFACE_H
   2#define XDIFF_INTERFACE_H
   3
   4#include "cache.h"
   5#include "xdiff/xdiff.h"
   6
   7/*
   8 * xdiff isn't equipped to handle content over a gigabyte;
   9 * we make the cutoff 1GB - 1MB to give some breathing
  10 * room for constant-sized additions (e.g., merge markers)
  11 */
  12#define MAX_XDIFF_SIZE (1024UL * 1024 * 1023)
  13
  14typedef void (*xdiff_emit_line_fn)(void *, char *, unsigned long);
  15typedef void (*xdiff_emit_hunk_fn)(void *data,
  16                                   long old_begin, long old_nr,
  17                                   long new_begin, long new_nr,
  18                                   const char *func, long funclen);
  19
  20int xdi_diff(mmfile_t *mf1, mmfile_t *mf2, xpparam_t const *xpp, xdemitconf_t const *xecfg, xdemitcb_t *ecb);
  21int xdi_diff_outf(mmfile_t *mf1, mmfile_t *mf2,
  22                  xdiff_emit_hunk_fn hunk_fn,
  23                  xdiff_emit_line_fn line_fn,
  24                  void *consume_callback_data,
  25                  xpparam_t const *xpp, xdemitconf_t const *xecfg);
  26int parse_hunk_header(char *line, int len,
  27                      int *ob, int *on,
  28                      int *nb, int *nn);
  29int read_mmfile(mmfile_t *ptr, const char *filename);
  30void read_mmblob(mmfile_t *ptr, const struct object_id *oid);
  31int buffer_is_binary(const char *ptr, unsigned long size);
  32
  33extern void xdiff_set_find_func(xdemitconf_t *xecfg, const char *line, int cflags);
  34extern void xdiff_clear_find_func(xdemitconf_t *xecfg);
  35extern int git_xmerge_config(const char *var, const char *value, void *cb);
  36extern int git_xmerge_style;
  37
  38/*
  39 * Can be used as a no-op hunk_fn for xdi_diff_outf(), since a NULL
  40 * one just sends the hunk line to the line_fn callback).
  41 */
  42void discard_hunk_line(void *priv,
  43                       long ob, long on, long nb, long nn,
  44                       const char *func, long funclen);
  45
  46/*
  47 * Compare the strings l1 with l2 which are of size s1 and s2 respectively.
  48 * Returns 1 if the strings are deemed equal, 0 otherwise.
  49 * The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
  50 * are treated for the comparision.
  51 */
  52extern int xdiff_compare_lines(const char *l1, long s1,
  53                               const char *l2, long s2, long flags);
  54
  55/*
  56 * Returns a hash of the string s of length len.
  57 * The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
  58 * are treated for the hash.
  59 */
  60extern unsigned long xdiff_hash_string(const char *s, size_t len, long flags);
  61
  62#endif