mirror of
https://github.com/php/php-src.git
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331 lines
8.2 KiB
C++
331 lines
8.2 KiB
C++
/*
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Ed Batutis <ed@batutis.com> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#if __cplusplus >= 201703L
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#include <string_view>
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#include <unicode/unistr.h>
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#endif
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extern "C" {
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#include "php_intl.h"
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#include <unicode/unorm2.h>
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#include "normalizer.h"
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#include "normalizer_class.h"
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#include "intl_convert.h"
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}
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#include <unicode/utf8.h>
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static const UNormalizer2 *intl_get_normalizer(zend_long form, UErrorCode *err)
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{/*{{{*/
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switch (form)
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{
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case NORMALIZER_FORM_C:
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return unorm2_getNFCInstance(err);
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break;
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case NORMALIZER_FORM_D:
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return unorm2_getNFDInstance(err);
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break;
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case NORMALIZER_FORM_KC:
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return unorm2_getNFKCInstance(err);
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break;
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case NORMALIZER_FORM_KD:
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return unorm2_getNFKDInstance(err);
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break;
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case NORMALIZER_FORM_KC_CF:
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return unorm2_getNFKCCasefoldInstance(err);
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break;
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}
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}/*}}}*/
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static int32_t intl_normalize(zend_long form, const UChar *src, int32_t src_len, UChar *dst, int32_t dst_len, UErrorCode *err)
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{/*{{{*/
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const UNormalizer2 *norm = intl_get_normalizer(form, err);
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if (U_FAILURE(*err)) {
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return -1;
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}
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return unorm2_normalize(norm, src, src_len, dst, dst_len, err);
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}/*}}}*/
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static UBool intl_is_normalized(zend_long form, const UChar *uinput, int32_t uinput_len, UErrorCode *err)
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{/*{{{*/
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const UNormalizer2 *norm = intl_get_normalizer(form, err);
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if(U_FAILURE(*err)) {
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return false;
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}
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return unorm2_isNormalized(norm, uinput, uinput_len, err);
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}/*}}}*/
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/* {{{ Normalize a string. */
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U_CFUNC PHP_FUNCTION( normalizer_normalize )
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{
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char* input = NULL;
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/* form is optional, defaults to FORM_C */
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zend_long form = NORMALIZER_DEFAULT;
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size_t input_len = 0;
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UChar* uinput = NULL;
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int32_t uinput_len = 0;
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int expansion_factor = 1;
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UErrorCode status = U_ZERO_ERROR;
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UChar* uret_buf = NULL;
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int32_t uret_len = 0;
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zend_string* u8str;
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int32_t size_needed;
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intl_error_reset( NULL );
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/* Parse parameters. */
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if( zend_parse_method_parameters( ZEND_NUM_ARGS(), getThis(), "s|l",
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&input, &input_len, &form ) == FAILURE )
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{
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RETURN_THROWS();
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}
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expansion_factor = 1;
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switch(form) {
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case NORMALIZER_FORM_D:
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expansion_factor = 3;
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break;
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case NORMALIZER_FORM_KD:
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expansion_factor = 3;
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break;
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case NORMALIZER_FORM_C:
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case NORMALIZER_FORM_KC:
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case NORMALIZER_FORM_KC_CF:
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break;
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default:
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zend_argument_value_error(2, "must be a a valid normalization form");
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RETURN_THROWS();
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}
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/*
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* Normalize string (converting it to UTF-16 first).
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*/
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/* First convert the string to UTF-16. */
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intl_convert_utf8_to_utf16(&uinput, &uinput_len, input, input_len, &status );
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if( U_FAILURE( status ) )
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{
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/* Set global error code. */
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intl_error_set_code( NULL, status );
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/* Set error messages. */
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intl_error_set_custom_msg( NULL, "Error converting input string to UTF-16");
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if (uinput) {
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efree( uinput );
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}
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RETURN_FALSE;
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}
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/* Allocate memory for the destination buffer for normalization */
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uret_len = uinput_len * expansion_factor;
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uret_buf = eumalloc( uret_len + 1 );
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/* normalize */
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size_needed = intl_normalize(form, uinput, uinput_len, uret_buf, uret_len, &status);
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/* Bail out if an unexpected error occurred.
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* (U_BUFFER_OVERFLOW_ERROR means that *target buffer is not large enough).
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* (U_STRING_NOT_TERMINATED_WARNING usually means that the input string is empty).
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*/
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if( U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR && status != U_STRING_NOT_TERMINATED_WARNING ) {
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intl_error_set_custom_msg( NULL, "Error normalizing string");
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efree( uret_buf );
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efree( uinput );
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RETURN_FALSE;
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}
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if ( size_needed > uret_len ) {
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/* realloc does not seem to work properly - memory is corrupted
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* uret_buf = eurealloc(uret_buf, size_needed + 1);
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*/
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efree( uret_buf );
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uret_buf = eumalloc( size_needed + 1 );
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uret_len = size_needed;
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status = U_ZERO_ERROR;
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/* try normalize again */
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size_needed = intl_normalize(form, uinput, uinput_len, uret_buf, uret_len, &status);
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/* Bail out if an unexpected error occurred. */
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if( U_FAILURE(status) ) {
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/* Set error messages. */
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intl_error_set_custom_msg( NULL,"Error normalizing string");
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efree( uret_buf );
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efree( uinput );
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RETURN_FALSE;
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}
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}
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efree( uinput );
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/* the buffer we actually used */
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uret_len = size_needed;
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/* Convert normalized string from UTF-16 to UTF-8. */
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u8str = intl_convert_utf16_to_utf8(uret_buf, uret_len, &status );
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efree( uret_buf );
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if( !u8str )
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{
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intl_error_set( NULL, status,
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"error converting normalized text UTF-8");
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RETURN_FALSE;
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}
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/* Return it. */
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RETVAL_NEW_STR( u8str );
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}
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/* }}} */
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/* {{{ Test if a string is in a given normalization form. */
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U_CFUNC PHP_FUNCTION( normalizer_is_normalized )
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{
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char* input = NULL;
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/* form is optional, defaults to FORM_C */
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zend_long form = NORMALIZER_DEFAULT;
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size_t input_len = 0;
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UChar* uinput = NULL;
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int uinput_len = 0;
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UErrorCode status = U_ZERO_ERROR;
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UBool uret = false;
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intl_error_reset( NULL );
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/* Parse parameters. */
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if( zend_parse_method_parameters( ZEND_NUM_ARGS(), getThis(), "s|l",
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&input, &input_len, &form) == FAILURE )
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{
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RETURN_THROWS();
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}
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switch(form) {
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case NORMALIZER_FORM_D:
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case NORMALIZER_FORM_KD:
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case NORMALIZER_FORM_C:
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case NORMALIZER_FORM_KC:
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case NORMALIZER_FORM_KC_CF:
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break;
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default:
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zend_argument_value_error(2, "must be a a valid normalization form");
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RETURN_THROWS();
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}
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/*
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* Test normalization of string (converting it to UTF-16 first).
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*/
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/* First convert the string to UTF-16. */
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intl_convert_utf8_to_utf16(&uinput, &uinput_len, input, input_len, &status );
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if( U_FAILURE( status ) )
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{
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/* Set global error code. */
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intl_error_set_code( NULL, status );
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/* Set error messages. */
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intl_error_set_custom_msg( NULL, "Error converting string to UTF-16.");
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if (uinput) {
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efree( uinput );
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}
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RETURN_FALSE;
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}
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/* test string */
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uret = intl_is_normalized(form, uinput, uinput_len, &status);
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efree( uinput );
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/* Bail out if an unexpected error occurred. */
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if( U_FAILURE(status) ) {
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/* Set error messages. */
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intl_error_set_custom_msg( NULL,"Error testing if string is the given normalization form.");
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RETURN_FALSE;
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}
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if ( uret )
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RETURN_TRUE;
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RETURN_FALSE;
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}
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/* }}} */
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/* {{{ Returns the Decomposition_Mapping property for the given UTF-8 encoded code point. */
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U_CFUNC PHP_FUNCTION( normalizer_get_raw_decomposition )
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{
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char* input = NULL;
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size_t input_length = 0;
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UChar32 codepoint = -1;
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int32_t offset = 0;
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UErrorCode status = U_ZERO_ERROR;
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const UNormalizer2 *norm;
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UChar decomposition[32];
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int32_t decomposition_length;
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zend_long form = NORMALIZER_DEFAULT;
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intl_error_reset(NULL);
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ZEND_PARSE_PARAMETERS_START(1, 2)
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Z_PARAM_STRING(input, input_length)
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Z_PARAM_OPTIONAL
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Z_PARAM_LONG(form)
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ZEND_PARSE_PARAMETERS_END();
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norm = intl_get_normalizer(form, &status);
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U8_NEXT(input, offset, input_length, codepoint);
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if ((size_t)offset != input_length) {
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intl_error_set_code(NULL, U_ILLEGAL_ARGUMENT_ERROR);
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intl_error_set_custom_msg(NULL, "Input string must be exactly one UTF-8 encoded code point long.");
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return;
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}
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if ((codepoint < UCHAR_MIN_VALUE) || (codepoint > UCHAR_MAX_VALUE)) {
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intl_error_set_code(NULL, U_ILLEGAL_ARGUMENT_ERROR);
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intl_error_set_custom_msg(NULL, "Code point out of range");
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return;
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}
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decomposition_length = unorm2_getRawDecomposition(norm, codepoint, decomposition, 32, &status);
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if (decomposition_length == -1) {
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RETURN_NULL();
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}
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RETVAL_NEW_STR(intl_convert_utf16_to_utf8(decomposition, decomposition_length, &status));
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}
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/* }}} */
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