-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
+/* $Id$ */
-size_t strxfrm( char * restrict s1, const char * restrict s2, size_t n ) { /* TODO */ };
+/* strxfrm( char *, const char *, size_t )
-/* PDPC code - unreviewed
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <string.h>
+
+#ifndef REGTEST
+
+#include <_PDCLIB_locale.h>
+
+size_t strxfrm( char * _PDCLIB_restrict s1, const char * _PDCLIB_restrict s2, size_t n )
{
- size_t oldlen;
-
- oldlen = strlen(s2);
- if (oldlen < n)
+ _PDCLIB_ctype_t *ctype = _PDCLIB_threadlocale()->_CType;
+ size_t len = strlen( s2 );
+ if ( len < n )
{
- memcpy(s1, s2, oldlen);
- s1[oldlen] = '\0';
+ /* Cannot use strncpy() here as the filling of s1 with '\0' is not part
+ of the spec.
+ */
+ while ( n-- && ( *s1++ = ctype[(unsigned char)*s2++].collation ) );
}
- return (oldlen);
+ return len;
}
-*/
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ char s[] = "xxxxxxxxxxx";
+ TESTCASE( strxfrm( NULL, "123456789012", 0 ) == 12 );
+ TESTCASE( strxfrm( s, "123456789012", 12 ) == 12 );
+ /*
+ The following test case is true in *this* implementation, but doesn't have to.
+ TESTCASE( s[0] == 'x' );
+ */
+ TESTCASE( strxfrm( s, "1234567890", 11 ) == 10 );
+ TESTCASE( s[0] == '1' );
+ TESTCASE( s[9] == '0' );
+ TESTCASE( s[10] == '\0' );
+ return TEST_RESULTS;
+}
+#endif
+