text: /*
   * Copyright (c) 1987, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Copyright (c) 2011 The FreeBSD Foundation
   * All rights reserved.
   * Portions of this software were developed by David Chisnall
   * under sponsorship from the FreeBSD Foundation.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #if !defined( _MSC_VER )
  #include <strings.h>
  #endif
  #include <ctype.h>
  
  int pl_strcasecmp( const char *s1, const char *s2 ) {
  	const unsigned char
  	        *us1 = ( const unsigned char * ) s1,
  	        *us2 = ( const unsigned char * ) s2;
  
  	while ( tolower( *us1 ) == tolower( *us2++ ) )
  		if ( *us1++ == '\0' )
  			return ( 0 );
  	return ( tolower( *us1 ) - tolower( *--us2 ) );
  }
  
  int pl_strncasecmp( const char *s1, const char *s2, size_t n ) {
  	if ( n != 0 ) {
  		const unsigned char
  		        *us1 = ( const unsigned char * ) s1,
  		        *us2 = ( const unsigned char * ) s2;
  
  		do {
  			if ( tolower( *us1 ) != tolower( *us2++ ) )
  				return ( tolower( *us1 ) - tolower( *--us2 ) );
  			if ( *us1++ == '\0' )
  				break;
  		} while ( --n != 0 );
  	}
  	return ( 0 );
  }