Commit 5ec8274b authored by Stefan Beller's avatar Stefan Beller Committed by Junio C Hamano

xdiff-interface: export comparing and hashing strings

This will turn out to be useful in a later patch.

xdl_recmatch is exported in xdiff/xutils.h, to be used by various
xdiff/*.c files, but not outside of xdiff/. This one makes it available
to the outside, too.

While at it, add documentation.
Signed-off-by: Stefan Beller's avatarStefan Beller <sbeller@google.com>
Signed-off-by: default avatarJunio C Hamano <gitster@pobox.com>
parent b66b5072
......@@ -5,6 +5,7 @@
#include "xdiff/xdiffi.h"
#include "xdiff/xemit.h"
#include "xdiff/xmacros.h"
#include "xdiff/xutils.h"
struct xdiff_emit_state {
xdiff_emit_consume_fn consume;
......@@ -296,6 +297,17 @@ void xdiff_clear_find_func(xdemitconf_t *xecfg)
}
}
unsigned long xdiff_hash_string(const char *s, size_t len, long flags)
{
return xdl_hash_record(&s, s + len, flags);
}
int xdiff_compare_lines(const char *l1, long s1,
const char *l2, long s2, long flags)
{
return xdl_recmatch(l1, s1, l2, s2, flags);
}
int git_xmerge_style = -1;
int git_xmerge_config(const char *var, const char *value, void *cb)
......
......@@ -29,4 +29,20 @@ extern void xdiff_clear_find_func(xdemitconf_t *xecfg);
extern int git_xmerge_config(const char *var, const char *value, void *cb);
extern int git_xmerge_style;
/*
* Compare the strings l1 with l2 which are of size s1 and s2 respectively.
* Returns 1 if the strings are deemed equal, 0 otherwise.
* The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
* are treated for the comparision.
*/
extern int xdiff_compare_lines(const char *l1, long s1,
const char *l2, long s2, long flags);
/*
* Returns a hash of the string s of length len.
* The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
* are treated for the hash.
*/
extern unsigned long xdiff_hash_string(const char *s, size_t len, long flags);
#endif
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