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Annotation of embedaddon/php/ext/intl/intl_convert.c, revision 1.1.1.2

1.1       misho       1: /*
                      2:    +----------------------------------------------------------------------+
                      3:    | PHP Version 5                                                        |
                      4:    +----------------------------------------------------------------------+
                      5:    | This source file is subject to version 3.01 of the PHP license,      |
                      6:    | that is bundled with this package in the file LICENSE, and is        |
                      7:    | available through the world-wide-web at the following url:           |
                      8:    | http://www.php.net/license/3_01.txt                                  |
                      9:    | If you did not receive a copy of the PHP license and are unable to   |
                     10:    | obtain it through the world-wide-web, please send a note to          |
                     11:    | license@php.net so we can mail you a copy immediately.               |
                     12:    +----------------------------------------------------------------------+
                     13:    | Authors: Vadim Savchuk <vsavchuk@productengine.com>                  |
                     14:    |          Dmitry Lakhtyuk <dlakhtyuk@productengine.com>               |
                     15:    +----------------------------------------------------------------------+
                     16:  */
                     17: 
                     18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21: 
                     22: #include <php.h>
                     23: 
                     24: #include "intl_common.h"
                     25: #include "intl_convert.h"
                     26: 
                     27: /* {{{ intl_convert_utf8_to_utf16
                     28:  * Convert given string from UTF-8 to UTF-16 to *target buffer.
                     29:  *
                     30:  * It *target is NULL then we allocate a large enough buffer,
                     31:  * store the converted string into it, and make target point to it.
                     32:  *
                     33:  * Otherwise, if *target is non-NULL, we assume that it points to a
                     34:  * dynamically allocated buffer of *target_len bytes length.
                     35:  * In this case the buffer will be used to store the converted string to,
                     36:  * and may be resized (made larger) if needed.
                     37:  *
                     38:  * @param target      Where to place the result.
                     39:  * @param target_len  Result length.
                     40:  * @param source      String to convert.
                     41:  * @param source_len  Length of the source string.
                     42:  * @param status      Conversion status.
                     43:  *
                     44:  * @return void       This function does not return anything.
                     45:  */
                     46: void intl_convert_utf8_to_utf16(
                     47:        UChar**     target, int* target_len,
                     48:        const char* src,    int  src_len,
                     49:        UErrorCode* status )
                     50: {
                     51:        UChar*      dst_buf = NULL;
                     52:        int32_t     dst_len = 0;
                     53: 
                     54:        /* If *target is NULL determine required destination buffer size (pre-flighting).
                     55:         * Otherwise, attempt to convert source string; if *target buffer is not large enough
                     56:         * it will be resized appropriately.
                     57:         */
                     58:        *status = U_ZERO_ERROR;
                     59: 
                     60:        u_strFromUTF8( *target, *target_len, &dst_len, src, src_len, status );
                     61: 
                     62:        if( *status == U_ZERO_ERROR )
                     63:        {
                     64:                /* String is converted successfuly */
                     65:                (*target)[dst_len] = 0;
                     66:                *target_len = dst_len;
                     67:                return;
                     68:        }
                     69: 
1.1.1.2 ! misho      70:        /* Bail out if an unexpected error occurred.
1.1       misho      71:         * (U_BUFFER_OVERFLOW_ERROR means that *target buffer is not large enough).
                     72:         * (U_STRING_NOT_TERMINATED_WARNING usually means that the input string is empty).
                     73:         */
                     74:        if( *status != U_BUFFER_OVERFLOW_ERROR && *status != U_STRING_NOT_TERMINATED_WARNING )
                     75:                return;
                     76: 
                     77:        /* Allocate memory for the destination buffer (it will be zero-terminated). */
                     78:        dst_buf = eumalloc( dst_len + 1 );
                     79: 
                     80:        /* Convert source string from UTF-8 to UTF-16. */
                     81:        *status = U_ZERO_ERROR;
                     82:        u_strFromUTF8( dst_buf, dst_len+1, NULL, src, src_len, status );
                     83:        if( U_FAILURE( *status ) )
                     84:        {
                     85:                efree( dst_buf );
                     86:                return;
                     87:        }
                     88: 
                     89:        dst_buf[dst_len] = 0;
                     90: 
                     91:        if( *target )
                     92:                efree( *target );
                     93: 
                     94:        *target     = dst_buf;
                     95:        *target_len = dst_len;
                     96: }
                     97: /* }}} */
                     98: 
                     99: /* {{{ intl_convert_utf16_to_utf8
                    100:  * Convert given string from UTF-16 to UTF-8.
                    101:  *
                    102:  * @param target      Where to place the result.
                    103:  * @param target_len  Result length.
                    104:  * @param source      String to convert.
                    105:  * @param source_len  Length of the source string.
                    106:  * @param status      Conversion status.
                    107:  *
                    108:  * @return void       This function does not return anything.
                    109:  */
                    110: void intl_convert_utf16_to_utf8(
                    111:        char**       target, int* target_len,
                    112:        const UChar* src,    int  src_len,
                    113:        UErrorCode*  status )
                    114: {
                    115:        char*       dst_buf = NULL;
                    116:        int32_t     dst_len;
                    117: 
                    118:        /* Determine required destination buffer size (pre-flighting). */
                    119:        *status = U_ZERO_ERROR;
                    120:        u_strToUTF8( NULL, 0, &dst_len, src, src_len, status );
                    121: 
1.1.1.2 ! misho     122:        /* Bail out if an unexpected error occurred.
1.1       misho     123:         * (U_BUFFER_OVERFLOW_ERROR means that *target buffer is not large enough).
                    124:         * (U_STRING_NOT_TERMINATED_WARNING usually means that the input string is empty).
                    125:         */
                    126:        if( *status != U_BUFFER_OVERFLOW_ERROR && *status != U_STRING_NOT_TERMINATED_WARNING )
                    127:                return;
                    128: 
                    129:        /* Allocate memory for the destination buffer (it will be zero-terminated). */
                    130:        dst_buf = emalloc( dst_len+1 );
                    131: 
                    132:        /* Convert source string from UTF-8 to UTF-16. */
                    133:        *status = U_ZERO_ERROR;
                    134:        u_strToUTF8( dst_buf, dst_len, NULL, src, src_len, status );
                    135:        if( U_FAILURE( *status ) )
                    136:        {
                    137:                efree( dst_buf );
                    138:                return;
                    139:        }
                    140: 
                    141:        /* U_STRING_NOT_TERMINATED_WARNING is OK for us => reset 'status'. */
                    142:        *status = U_ZERO_ERROR;
                    143: 
                    144:        dst_buf[dst_len] = 0;
                    145:        *target     = dst_buf;
                    146:        *target_len = dst_len;
                    147: }
                    148: /* }}} */
                    149: 
                    150: /*
                    151:  * Local variables:
                    152:  * tab-width: 4
                    153:  * c-basic-offset: 4
                    154:  * End:
                    155:  * vim600: noet sw=4 ts=4 fdm=marker
                    156:  * vim<600: noet sw=4 ts=4
                    157:  */