/*
   +----------------------------------------------------------------------+
   | Copyright © The PHP Group and Contributors.                          |
   +----------------------------------------------------------------------+
   | This source file is subject to the Modified BSD License that is      |
   | bundled with this package in the file LICENSE, and is available      |
   | through the World Wide Web at <https://www.php.net/license/>.        |
   |                                                                      |
   | SPDX-License-Identifier: BSD-3-Clause                                |
   +----------------------------------------------------------------------+
   | Authors: Vadim Savchuk <vsavchuk@productengine.com>                  |
   |          Dmitry Lakhtyuk <dlakhtyuk@productengine.com>               |
   +----------------------------------------------------------------------+
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#if __cplusplus >= 201703L
#include <string_view>
#include <unicode/unistr.h>
#endif

extern "C" {
#include "php_intl.h"
#include "intl_convert.h"
}
#include "collator_class.h"

/* {{{ Compare two strings. */
U_CFUNC PHP_FUNCTION( collator_compare )
{
	char*            str1      = NULL;
	char*            str2      = NULL;
	size_t              str1_len  = 0;
	size_t              str2_len  = 0;

	UChar*           ustr1     = NULL;
	UChar*           ustr2     = NULL;
	int              ustr1_len = 0;
	int              ustr2_len = 0;

	UCollationResult result;

	COLLATOR_METHOD_INIT_VARS

	/* Parse parameters. */
	if( zend_parse_method_parameters( ZEND_NUM_ARGS(), getThis(), "Oss",
		&object, Collator_ce_ptr, &str1, &str1_len, &str2, &str2_len ) == FAILURE )
	{
		RETURN_THROWS();
	}

	/* Fetch the object. */
	COLLATOR_METHOD_FETCH_OBJECT;

	if (!co || !co->ucoll) {
		intl_error_set_code( NULL, COLLATOR_ERROR_CODE( co ) );
		intl_errors_set_custom_msg(COLLATOR_ERROR_P( co ), "Object not initialized");
		zend_throw_error(NULL, "Object not initialized");

		RETURN_THROWS();
	}

	/*
	 * Compare given strings (converting them to UTF-16 first).
	 */

	/* First convert the strings to UTF-16. */
	intl_convert_utf8_to_utf16(
		&ustr1, &ustr1_len, str1, str1_len, COLLATOR_ERROR_CODE_P( co ) );
	if( U_FAILURE( COLLATOR_ERROR_CODE( co ) ) )
	{
		/* Set global error code. */
		intl_error_set_code( NULL, COLLATOR_ERROR_CODE( co ) );

		/* Set error messages. */
		intl_errors_set_custom_msg( COLLATOR_ERROR_P( co ), "Error converting first argument to UTF-16");
		if (ustr1) {
			efree( ustr1 );
		}
		RETURN_FALSE;
	}

	intl_convert_utf8_to_utf16(
		&ustr2, &ustr2_len, str2, str2_len, COLLATOR_ERROR_CODE_P( co ) );
	if( U_FAILURE( COLLATOR_ERROR_CODE( co ) ) )
	{
		/* Set global error code. */
		intl_error_set_code( NULL, COLLATOR_ERROR_CODE( co ) );

		/* Set error messages. */
		intl_errors_set_custom_msg( COLLATOR_ERROR_P( co ), "Error converting second argument to UTF-16");
		if (ustr1) {
			efree( ustr1 );
		}
		if (ustr2) {
			efree( ustr2 );
		}
		RETURN_FALSE;
	}

	/* Then compare them. */
	result = ucol_strcoll(
		co->ucoll,
		ustr1, ustr1_len,
		ustr2, ustr2_len );

	if( ustr1 )
		efree( ustr1 );
	if( ustr2 )
		efree( ustr2 );

	/* Return result of the comparison. */
	RETURN_LONG( result );
}
/* }}} */