+
+ /* skipping non-s2 characters */
+ tmp = s1;
+ while ( *tmp )
+ {
+ p = s2;
+ while ( *p )
+ {
+ if ( *tmp == *p++ )
+ {
+ /* found seperator; overwrite with '\0', position tmp, return */
+ *tmp++ = '\0';
+ return s1;
+ }
+ }
+ ++tmp;
+ }
+
+ /* parsed to end of string */
+ return ( tmp = NULL );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+ char s[] = "_a_bc__d_";
+ BEGIN_TESTS;
+ TESTCASE( strtok( s, "_" ) == &s[1] );
+ TESTCASE( s[1] == 'a' );
+ TESTCASE( s[2] == '\0' );
+ TESTCASE( strtok( NULL, "_" ) == &s[3] );
+ TESTCASE( s[3] == 'b' );
+ TESTCASE( s[4] == 'c' );
+ TESTCASE( s[5] == '\0' );
+ TESTCASE( strtok( NULL, "_" ) == &s[7] );
+ TESTCASE( s[6] == '_' );
+ TESTCASE( s[7] == 'd' );
+ TESTCASE( s[8] == '\0' );
+ TESTCASE( strtok( NULL, "_" ) == NULL );
+ return TEST_RESULTS;