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/*
* $Id: thcoll.h,v 1.5 2006-07-31 12:54:02 thep Exp $
* thcoll.h - Thai string collation
* Created: 2001-05-17
*/
#ifndef THAI_THCOLL_H
#define THAI_THCOLL_H
#include <thai/thailib.h>
BEGIN_CDECL
/**
* @file thcoll.h
* @brief Thai string collation
*/
/**
* @brief Compare two Thai strings for collation
*
* @param s1 : first string (null-terminated)
* @param s2 : second string (null-terminated)
*
* @return < 0 if @a s1 precedes @a s2; 0 if @a s1 equals @a s2;
* > 0 if @a s1 succeeds @a s2
*/
extern int th_strcoll(const thchar_t *s1, const thchar_t *s2);
/**
* @brief Transform string into collatable form
*
* @param dest : the destination string buffer
* @param src : the string to transform
* @param n : the size of @a dest buffer
*
* @returns the number of bytes required to store the result in @a dest,
* excluding the terminating '\\0'.
* If the return value >= @a n, @a dest is undefined.
*
* Transforms @a src into a form from which comparison using strcmp() yields
* the same result as that from th_strcoll(). At most @a n characters are
* put in @a dest.
*/
extern size_t th_strxfrm(thchar_t dest[], const thchar_t *src, size_t n);
END_CDECL
#endif /* THAI_THCOLL_H */
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