text: /*
     +----------------------------------------------------------------------+
     | Zend Engine                                                          |
     +----------------------------------------------------------------------+
     | Copyright (c) 1998-2014 Zend Technologies Ltd. (http://www.zend.com) |
     +----------------------------------------------------------------------+
     | This source file is subject to version 2.00 of the Zend license,     |
     | that is bundled with this package in the file LICENSE, and is        | 
     | available through the world-wide-web at                              |
     | http://www.zend.com/license/2_00.txt.                                |
     | If you did not receive a copy of the Zend license and are unable to  |
     | obtain it through the world-wide-web, please send a note to          |
     | license@zend.com so we can mail you a copy immediately.              |
     +----------------------------------------------------------------------+
     | Authors: Masaki Fujimoto <fujimoto@php.net>                          |
     |          Rui Hirokawa <hirokawa@php.net>                             |
     +----------------------------------------------------------------------+
  */
  
  /* $Id$ */
  
  #include "zend.h"
  #include "zend_compile.h"
  #include "zend_operators.h"
  #include "zend_multibyte.h"
  #include "zend_ini.h"
  
  static const zend_encoding *dummy_encoding_fetcher(const char *encoding_name TSRMLS_DC)
  {
  	return NULL;
  }
  
  static const char *dummy_encoding_name_getter(const zend_encoding *encoding)
  {
  	return (const char*)encoding;
  }
  
  static int dummy_encoding_lexer_compatibility_checker(const zend_encoding *encoding)
  {
  	return 0;
  }
  
  static const zend_encoding *dummy_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size TSRMLS_DC)
  {
  	return NULL;
  }
  
  static size_t dummy_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from TSRMLS_DC)
  {
  	return (size_t)-1;
  }
  
  static int dummy_encoding_list_parser(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, int persistent TSRMLS_DC)
  {
  	*return_list = pemalloc(0, persistent);
  	return_size = 0;
  	return SUCCESS;
  }
  
  static const zend_encoding *dummy_internal_encoding_getter(TSRMLS_D)
  {
  	return NULL;
  }
  
  static int dummy_internal_encoding_setter(const zend_encoding *encoding TSRMLS_DC)
  {
  	return FAILURE;
  }
  
  static zend_multibyte_functions multibyte_functions = {
  	NULL,
  	dummy_encoding_fetcher,
  	dummy_encoding_name_getter,
  	dummy_encoding_lexer_compatibility_checker,
  	dummy_encoding_detector,
  	dummy_encoding_converter,
  	dummy_encoding_list_parser,
  	dummy_internal_encoding_getter,
  	dummy_internal_encoding_setter
  };
  
  ZEND_API const zend_encoding *zend_multibyte_encoding_utf32be = (const zend_encoding*)"UTF-32BE";
  ZEND_API const zend_encoding *zend_multibyte_encoding_utf32le = (const zend_encoding*)"UTF-32LE";
  ZEND_API const zend_encoding *zend_multibyte_encoding_utf16be = (const zend_encoding*)"UTF-16BE";
  ZEND_API const zend_encoding *zend_multibyte_encoding_utf16le = (const zend_encoding*)"UTF-32LE";
  ZEND_API const zend_encoding *zend_multibyte_encoding_utf8 = (const zend_encoding*)"UTF-8";
  
  ZEND_API int zend_multibyte_set_functions(const zend_multibyte_functions *functions TSRMLS_DC)
  {
  	zend_multibyte_encoding_utf32be = functions->encoding_fetcher("UTF-32BE" TSRMLS_CC);
  	if (!zend_multibyte_encoding_utf32be) {
  		return FAILURE;
  	}
  	zend_multibyte_encoding_utf32le = functions->encoding_fetcher("UTF-32LE" TSRMLS_CC);
  	if (!zend_multibyte_encoding_utf32le) {
  		return FAILURE;
  	}
  	zend_multibyte_encoding_utf16be = functions->encoding_fetcher("UTF-16BE" TSRMLS_CC);
  	if (!zend_multibyte_encoding_utf16be) {
  		return FAILURE;
  	}
  	zend_multibyte_encoding_utf16le = functions->encoding_fetcher("UTF-16LE" TSRMLS_CC);
  	if (!zend_multibyte_encoding_utf16le) {
  		return FAILURE;
  	}
  	zend_multibyte_encoding_utf8 = functions->encoding_fetcher("UTF-8" TSRMLS_CC);
  	if (!zend_multibyte_encoding_utf8) {
  		return FAILURE;
  	}
  
  	multibyte_functions = *functions;
  
  	/* As zend_multibyte_set_functions() gets called after ini settings were
  	 * populated, we need to reinitialize script_encoding here.
  	 */
  	{
  		const char *value = zend_ini_string("zend.script_encoding", sizeof("zend.script_encoding"), 0);
  		zend_multibyte_set_script_encoding_by_string(value, strlen(value) TSRMLS_CC);
  	}
  	return SUCCESS;
  }
  
  ZEND_API const zend_multibyte_functions *zend_multibyte_get_functions(TSRMLS_D)
  {
  	return multibyte_functions.provider_name ? &multibyte_functions: NULL;
  }
  
  ZEND_API const zend_encoding *zend_multibyte_fetch_encoding(const char *name TSRMLS_DC)
  {
  	return multibyte_functions.encoding_fetcher(name TSRMLS_CC);
  }
  
  ZEND_API const char *zend_multibyte_get_encoding_name(const zend_encoding *encoding)
  {
  	return multibyte_functions.encoding_name_getter(encoding);
  }
  
  ZEND_API int zend_multibyte_check_lexer_compatibility(const zend_encoding *encoding)
  {
  	return multibyte_functions.lexer_compatibility_checker(encoding);
  }
  
  ZEND_API const zend_encoding *zend_multibyte_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size TSRMLS_DC)
  {
  	return multibyte_functions.encoding_detector(string, length, list, list_size TSRMLS_CC);
  }
  
  ZEND_API size_t zend_multibyte_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from TSRMLS_DC)
  {
  	return multibyte_functions.encoding_converter(to, to_length, from, from_length, encoding_to, encoding_from TSRMLS_CC);
  }
  
  ZEND_API int zend_multibyte_parse_encoding_list(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, int persistent TSRMLS_DC)
  {
  	return multibyte_functions.encoding_list_parser(encoding_list, encoding_list_len, return_list, return_size, persistent TSRMLS_CC);
  }
  
  ZEND_API const zend_encoding *zend_multibyte_get_internal_encoding(TSRMLS_D)
  {
  	return multibyte_functions.internal_encoding_getter(TSRMLS_C);
  }
  
  ZEND_API const zend_encoding *zend_multibyte_get_script_encoding(TSRMLS_D)
  {
  	return LANG_SCNG(script_encoding);
  }
  
  ZEND_API int zend_multibyte_set_script_encoding(const zend_encoding **encoding_list, size_t encoding_list_size TSRMLS_DC)
  {
  	if (CG(script_encoding_list)) {
  		free(CG(script_encoding_list));
  	}
  	CG(script_encoding_list) = encoding_list;
  	CG(script_encoding_list_size) = encoding_list_size;
  	return SUCCESS;
  }
  
  ZEND_API int zend_multibyte_set_internal_encoding(const zend_encoding *encoding TSRMLS_DC)
  {
  	return multibyte_functions.internal_encoding_setter(encoding TSRMLS_CC);
  }
  
  ZEND_API int zend_multibyte_set_script_encoding_by_string(const char *new_value, size_t new_value_length TSRMLS_DC)
  {
  	const zend_encoding **list = 0;
  	size_t size = 0;
  
  	if (!new_value) {
  		zend_multibyte_set_script_encoding(NULL, 0 TSRMLS_CC);
  		return SUCCESS;
  	}
  
  	if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length, &list, &size, 1 TSRMLS_CC)) {
  		return FAILURE;
  	}
  
  	if (size == 0) {
  		pefree(list, 1);
  		return FAILURE;
  	}
  
  	if (FAILURE == zend_multibyte_set_script_encoding(list, size TSRMLS_CC)) {
  		return FAILURE;
  	}
  
  	return SUCCESS;
  }
  
  /*
   * Local variables:
   * tab-width: 4
   * c-basic-offset: 4
   * End:
   * vim600: sw=4 ts=4 tw=78
   * vim<600: sw=4 ts=4 tw=78
   */
  