/* $Id: UTF8.xs,v 1.1.1.1 2001/01/31 03:58:53 zarzycki Exp $ */
/*
 * Copyright (c) 2000 Japan Network Information Center.  All rights reserved.
 *  
 * By using this file, you agree to the terms and conditions set forth bellow.
 * 
 *                      LICENSE TERMS AND CONDITIONS 
 * 
 * The following License Terms and Conditions apply, unless a different
 * license is obtained from Japan Network Information Center ("JPNIC"),
 * a Japanese association, Fuundo Bldg., 1-2 Kanda Ogawamachi, Chiyoda-ku,
 * Tokyo, Japan.
 * 
 * 1. Use, Modification and Redistribution (including distribution of any
 *    modified or derived work) in source and/or binary forms is permitted
 *    under this License Terms and Conditions.
 * 
 * 2. Redistribution of source code must retain the copyright notices as they
 *    appear in each source code file, this License Terms and Conditions.
 * 
 * 3. Redistribution in binary form must reproduce the Copyright Notice,
 *    this License Terms and Conditions, in the documentation and/or other
 *    materials provided with the distribution.  For the purposes of binary
 *    distribution the "Copyright Notice" refers to the following language:
 *    "Copyright (c) Japan Network Information Center.  All rights reserved."
 * 
 * 4. Neither the name of JPNIC may be used to endorse or promote products
 *    derived from this Software without specific prior written approval of
 *    JPNIC.
 * 
 * 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
 *    "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 JPNIC 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 DAMAGES.
 * 
 * 6. Indemnification by Licensee
 *    Any person or entities using and/or redistributing this Software under
 *    this License Terms and Conditions shall defend indemnify and hold
 *    harmless JPNIC from and against any and all judgements damages,
 *    expenses, settlement liabilities, cost and other liabilities of any
 *    kind as a result of use and redistribution of this Software or any
 *    claim, suite, action, litigation or proceeding by any third party
 *    arising out of or relates to this License Terms and Conditions.
 * 
 * 7. Governing Law, Jurisdiction and Venue
 *    This License Terms and Conditions shall be governed by and and
 *    construed in accordance with the law of Japan. Any person or entities
 *    using and/or redistributing this Software under this License Terms and
 *    Conditions hereby agrees and consent to the personal and exclusive
 *    jurisdiction and venue of Tokyo District Court of Japan.
 */
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <mdn/utf8.h>

/******************************************************************/

MODULE = MDN::UTF8		PACKAGE = MDN::UTF8		

PROTOTYPES: ENABLE

int
getwc(package_name, string)
	const char *package_name
	SV *string
    PREINIT:
	char *raw_string;
	int raw_string_length;
	int wc_length;
	unsigned long wc;
    PPCODE:
	raw_string_length = SvCUR(string);
	raw_string = SvPV(string, raw_string_length);
	wc_length = mdn_utf8_getwc(raw_string, raw_string_length, &wc);
	if (wc_length > 0) {
	    XPUSHs(sv_2mortal(newSVnv((double)wc)));
	    XPUSHs(sv_2mortal(newSViv((int)wc_length)));
	}

void
unpack(package_name, string)
	const char *package_name
	SV *string
    PREINIT:
	char *raw_string;
	int raw_string_length;
	int wc_length;
	unsigned long wc;
	I32 i;
	I32 elements;
    PPCODE:
	raw_string_length = SvCUR(string);
	raw_string = SvPV(string, raw_string_length);
	i = 0;
	elements = 0;
	while (i < raw_string_length) {
	    wc_length = mdn_utf8_getwc(raw_string + i,
		    raw_string_length - i, &wc);
	    if (wc_length == 0) {
		for (i = 0; i < elements; i++) {
		   POPn;
		}
		break;
	    }
	    XPUSHs(sv_2mortal(newSVnv((double)wc)));
	    i += wc_length;
	    elements++;
	}

SV*
pack(package_name, ...)
	const char *package_name
    PROTOTYPE: $@
    PREINIT:
	char raw_string[6];
	int raw_string_length;
	I32 i;
    CODE:
	RETVAL = newSVsv(&PL_sv_undef);
	for (i = 1; i < items; i++) {
	    raw_string_length = mdn_utf8_putwc(raw_string, 6, 
		(unsigned long)SvNV(ST(i)));
	    if (raw_string_length == 0) {
		SvREFCNT_dec(RETVAL);
		RETVAL = &PL_sv_undef;
		break;
	    }
	    sv_catpvn(RETVAL, raw_string, raw_string_length);
	}
    OUTPUT:
	RETVAL

int
isvalid(package_name, string)
	const char *package_name
	const char *string
    CODE:
	RETVAL = mdn_utf8_isvalidstring(string);
    OUTPUT:
	RETVAL
