1 #ifndef XDIFF_INTERFACE_H
2 #define XDIFF_INTERFACE_H
5 #include "xdiff/xdiff.h"
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)
12 #define MAX_XDIFF_SIZE (1024UL * 1024 * 1023)
14 typedef void (*xdiff_emit_line_fn
)(void *, char *, unsigned long);
15 typedef 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
);
20 int xdi_diff(mmfile_t
*mf1
, mmfile_t
*mf2
, xpparam_t
const *xpp
, xdemitconf_t
const *xecfg
, xdemitcb_t
*ecb
);
21 int 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
);
26 int read_mmfile(mmfile_t
*ptr
, const char *filename
);
27 void read_mmblob(mmfile_t
*ptr
, const struct object_id
*oid
);
28 int buffer_is_binary(const char *ptr
, unsigned long size
);
30 extern void xdiff_set_find_func(xdemitconf_t
*xecfg
, const char *line
, int cflags
);
31 extern void xdiff_clear_find_func(xdemitconf_t
*xecfg
);
32 extern int git_xmerge_config(const char *var
, const char *value
, void *cb
);
33 extern int git_xmerge_style
;
36 * Can be used as a no-op hunk_fn for xdi_diff_outf(), since a NULL
37 * one just sends the hunk line to the line_fn callback).
39 void discard_hunk_line(void *priv
,
40 long ob
, long on
, long nb
, long nn
,
41 const char *func
, long funclen
);
44 * Compare the strings l1 with l2 which are of size s1 and s2 respectively.
45 * Returns 1 if the strings are deemed equal, 0 otherwise.
46 * The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
47 * are treated for the comparision.
49 extern int xdiff_compare_lines(const char *l1
, long s1
,
50 const char *l2
, long s2
, long flags
);
53 * Returns a hash of the string s of length len.
54 * The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
55 * are treated for the hash.
57 extern unsigned long xdiff_hash_string(const char *s
, size_t len
, long flags
);