root/intl/transliterator/transliterator_methods.c

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DEFINITIONS

This source file includes following definitions.
  1. create_transliterator
  2. PHP_FUNCTION
  3. PHP_FUNCTION
  4. PHP_FUNCTION
  5. PHP_FUNCTION
  6. PHP_FUNCTION
  7. PHP_METHOD
  8. PHP_FUNCTION
  9. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Gustavo Lopes <cataphract@php.net>                          |
   +----------------------------------------------------------------------+
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php_intl.h"
#include "transliterator.h"
#include "transliterator_class.h"
#include "transliterator_methods.h"
#include "intl_data.h"
#include "intl_convert.h"

#include <zend_exceptions.h>

static int create_transliterator( char *str_id, int str_id_len, long direction, zval *object TSRMLS_DC )
{
        Transliterator_object *to;
        UChar                 *ustr_id    = NULL;
        int32_t               ustr_id_len = 0;
        UTransliterator       *utrans;
        UParseError           parse_error   = {0, -1};

        intl_error_reset( NULL TSRMLS_CC );

        if( ( direction != TRANSLITERATOR_FORWARD ) && (direction != TRANSLITERATOR_REVERSE ) )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_create: invalid direction", 0 TSRMLS_CC );
                return FAILURE;
        }

        object_init_ex( object, Transliterator_ce_ptr );
        TRANSLITERATOR_METHOD_FETCH_OBJECT_NO_CHECK; /* fetch zend object from zval "object" into "to" */

        /* Convert transliterator id to UTF-16 */
        intl_convert_utf8_to_utf16( &ustr_id, &ustr_id_len, str_id, str_id_len, TRANSLITERATOR_ERROR_CODE_P( to ) );
        if( U_FAILURE( TRANSLITERATOR_ERROR_CODE( to ) ) )
        {
                intl_error_set_code( NULL, TRANSLITERATOR_ERROR_CODE( to ) TSRMLS_CC );
                intl_error_set_custom_msg( NULL, "String conversion of id to UTF-16 failed", 0 TSRMLS_CC );
                zval_dtor( object );
                return FAILURE;
        }

        /* Open ICU Transliterator. */
        utrans = utrans_openU( ustr_id, ustr_id_len, (UTransDirection ) direction,
                NULL, -1, &parse_error, TRANSLITERATOR_ERROR_CODE_P( to ) );
        if (ustr_id) {
                efree( ustr_id );
        }
        
        if( U_FAILURE( TRANSLITERATOR_ERROR_CODE( to ) ) )
        {
                char *buf = NULL;
                intl_error_set_code( NULL, TRANSLITERATOR_ERROR_CODE( to ) TSRMLS_CC );
                spprintf( &buf, 0, "transliterator_create: unable to open ICU transliterator"
                        " with id \"%s\"", str_id );
                if( buf == NULL ) {
                        intl_error_set_custom_msg( NULL,
                                "transliterator_create: unable to open ICU transliterator", 0 TSRMLS_CC );
                }
                else
                {
                        intl_error_set_custom_msg( NULL, buf, /* copy message */ 1 TSRMLS_CC );
                        efree( buf );
                }
                zval_dtor( object );
                return FAILURE;
        }
        
        transliterator_object_construct( object, utrans, TRANSLITERATOR_ERROR_CODE_P( to ) TSRMLS_CC );
        /* no need to close the transliterator manually on construction error */
        if( U_FAILURE( TRANSLITERATOR_ERROR_CODE( to ) ) )
        {
                intl_error_set_code( NULL, TRANSLITERATOR_ERROR_CODE( to ) TSRMLS_CC );
                intl_error_set_custom_msg( NULL,
                        "transliterator_create: internal constructor call failed", 0 TSRMLS_CC );
                zval_dtor( object );
                return FAILURE;
        }

        return SUCCESS;
}

/* {{{ proto Transliterator transliterator_create( string id [, int direction ] )
 *     proto Transliterator Transliterator::create( string id [, int direction ] )
 * Opens a transliterator by id.
 */
PHP_FUNCTION( transliterator_create )
{
        char  *str_id;
        int   str_id_len;
        long  direction   = TRANSLITERATOR_FORWARD;
        int res;

        TRANSLITERATOR_METHOD_INIT_VARS;
        
        (void) to; /* unused */

        if( zend_parse_parameters( ZEND_NUM_ARGS() TSRMLS_CC, "s|l",
                &str_id, &str_id_len, &direction ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_create: bad arguments", 0 TSRMLS_CC );
                RETURN_NULL();
        }

        object = return_value;
        res = create_transliterator( str_id, str_id_len, direction, object TSRMLS_CC );
        if( res == FAILURE )
                RETURN_NULL();
        
        /* success, leave return_value as it is (set by create_transliterator) */
}
/* }}} */

/* {{{ proto Transliterator transliterator_create_from_rules( string rules [, int direction ] )
 *     proto Transliterator Transliterator::createFromRules( string rules [, int direction ] )
 * Opens a transliterator by id.
 */
PHP_FUNCTION( transliterator_create_from_rules )
{
        char                *str_rules;
        int             str_rules_len;
        UChar               *ustr_rules    = NULL;
        int32_t         ustr_rules_len = 0;
        long            direction      = TRANSLITERATOR_FORWARD;
        UParseError     parse_error    = {0, -1};
        UTransliterator *utrans;
        UChar           id[] = {0x52, 0x75, 0x6C, 0x65, 0x73, 0x54, 0x72,
                                               0x61, 0x6E, 0x73, 0x50, 0x48, 0x50, 0}; /* RulesTransPHP */
        TRANSLITERATOR_METHOD_INIT_VARS;

        if( zend_parse_parameters( ZEND_NUM_ARGS() TSRMLS_CC, "s|l",
                &str_rules, &str_rules_len, &direction ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_create_from_rules: bad arguments", 0 TSRMLS_CC );
                RETURN_NULL();
        }

        if( ( direction != TRANSLITERATOR_FORWARD ) && (direction != TRANSLITERATOR_REVERSE ) )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_create_from_rules: invalid direction", 0 TSRMLS_CC );
                RETURN_NULL();
        }

        object = return_value;
        object_init_ex( object, Transliterator_ce_ptr );
        TRANSLITERATOR_METHOD_FETCH_OBJECT_NO_CHECK;

        intl_convert_utf8_to_utf16( &ustr_rules, &ustr_rules_len,
                str_rules, str_rules_len, TRANSLITERATOR_ERROR_CODE_P( to ) );
        /* (I'm not a big fan of non-obvious flow control macros ).
         * This one checks the error value, destroys object and returns false */
        INTL_CTOR_CHECK_STATUS( to, "String conversion of rules to UTF-16 failed" );

        /* Open ICU Transliterator. */
        utrans = utrans_openU( id, ( sizeof( id ) - 1 ) / ( sizeof( *id ) ), (UTransDirection ) direction,
                ustr_rules, ustr_rules_len, &parse_error, TRANSLITERATOR_ERROR_CODE_P( to ) );
        if (ustr_rules) {
                efree( ustr_rules );
        }
        
        intl_error_set_code( NULL, INTL_DATA_ERROR_CODE( to ) TSRMLS_CC );
        if( U_FAILURE( INTL_DATA_ERROR_CODE( to ) ) )
        {
                char *msg = NULL;
                smart_str parse_error_str;
                parse_error_str = transliterator_parse_error_to_string( &parse_error );
                spprintf( &msg, 0, "transliterator_create_from_rules: unable to "
                        "create ICU transliterator from rules (%s)", parse_error_str.c );
                smart_str_free( &parse_error_str );
                if( msg != NULL )
                {
                        intl_errors_set_custom_msg( INTL_DATA_ERROR_P( to ), msg, 1 TSRMLS_CC );
                        efree( msg );
                }
                zval_dtor( return_value );
                RETURN_NULL();
    }
        transliterator_object_construct( object, utrans, TRANSLITERATOR_ERROR_CODE_P( to ) TSRMLS_CC );
        /* no need to close the transliterator manually on construction error */
        INTL_CTOR_CHECK_STATUS( to, "transliterator_create_from_rules: internal constructor call failed" );
}
/* }}} */

/* {{{ proto Transliterator transliterator_create_inverse( Transliterator orig_trans )
 *     proto Transliterator Transliterator::createInverse()
 * Opens the inverse transliterator transliterator.
 */
PHP_FUNCTION( transliterator_create_inverse )
{
        Transliterator_object *to_orig;
        UTransliterator       *utrans;
        TRANSLITERATOR_METHOD_INIT_VARS;

        if( zend_parse_method_parameters( ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "O",
                &object, Transliterator_ce_ptr ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_create_inverse: bad arguments", 0 TSRMLS_CC );
                RETURN_NULL();
        }

        TRANSLITERATOR_METHOD_FETCH_OBJECT;
        to_orig = to;

        object = return_value;
        object_init_ex( object, Transliterator_ce_ptr );
        TRANSLITERATOR_METHOD_FETCH_OBJECT_NO_CHECK; /* change "to" into new object (from "object" ) */
        
        utrans = utrans_openInverse( to_orig->utrans, TRANSLITERATOR_ERROR_CODE_P( to ) );
        INTL_CTOR_CHECK_STATUS( to, "transliterator_create_inverse: could not create "
                "inverse ICU transliterator" );
        transliterator_object_construct( object, utrans, TRANSLITERATOR_ERROR_CODE_P( to ) TSRMLS_CC );
        /* no need to close the transliterator manually on construction error */
        INTL_CTOR_CHECK_STATUS( to, "transliterator_create: internal constructor call failed" );
}
/* }}} */

/* {{{ proto array transliterator_list_ids()
 *     proto array Transliterator::listIDs()
 * Return an array with the registered transliterator IDs.
 */
PHP_FUNCTION( transliterator_list_ids )
{
        UEnumeration  *en;
        const UChar       *elem;
        int32_t           elem_len;
        UErrorCode        status = U_ZERO_ERROR;
        
        intl_error_reset( NULL TSRMLS_CC );

        if( zend_parse_parameters_none() == FAILURE )
        {
                /* seems to be the convention in this lib to return false instead of
                 * null on bad parameter types, except on constructors and factory
                 * methods */
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_list_ids: bad arguments", 0 TSRMLS_CC );
                RETURN_FALSE;
        }

        en = utrans_openIDs( &status );
        INTL_CHECK_STATUS( status,
                "transliterator_list_ids: Failed to obtain registered transliterators" );

        array_init( return_value );
        while( (elem = uenum_unext( en, &elem_len, &status )) )
        {
                char *el_char = NULL;
                int  el_len   = 0;

                intl_convert_utf16_to_utf8( &el_char, &el_len, elem, elem_len, &status );

                if( U_FAILURE( status ) )
                {
                        efree( el_char );
                        break;
                }
                else
                {
                        add_next_index_stringl( return_value, el_char, el_len, 0 );
                }
        }
        uenum_close( en );

        intl_error_set_code( NULL, status TSRMLS_CC );
        if( U_FAILURE( status ) )
        {
                zval_dtor( return_value );
                RETVAL_FALSE;
                intl_error_set_custom_msg( NULL, "transliterator_list_ids: "
                        "Failed to build array of registered transliterators", 0 TSRMLS_CC );
        }
}
/* }}} */

/* {{{ proto string transliterator_transliterate( Transliterator trans, string subject [, int start = 0 [, int end = -1 ]] )
 *     proto string Transliterator::transliterate( string subject [, int start = 0 [, int end = -1 ]] )
 * Transliterate a string. */
PHP_FUNCTION( transliterator_transliterate )
{
        char        *str;
        UChar           *ustr           = NULL,
                                *uresult        = NULL;
        int                     str_len;
        int32_t         ustr_len        = 0,
                                capacity,
                                uresult_len;
        long            start           = 0,
                                limit           = -1;
        int                     success     = 0,
                                temp_trans  = 0;
        TRANSLITERATOR_METHOD_INIT_VARS;

        object = getThis();

        if( object == NULL )
        {
                /* in non-OOP version, accept both a transliterator and a string */
                zval **arg1;
                if( zend_parse_parameters( ZEND_NUM_ARGS() TSRMLS_CC, "Zs|ll",
                        &arg1, &str, &str_len, &start, &limit ) == FAILURE )
                {
                        intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                                "transliterator_transliterate: bad arguments", 0 TSRMLS_CC );
                        RETURN_FALSE;
                }
                
                if( Z_TYPE_PP( arg1 ) == IS_OBJECT &&
                        instanceof_function( Z_OBJCE_PP( arg1 ), Transliterator_ce_ptr TSRMLS_CC ) )
                {
                        object = *arg1;
                }
                else
                { /* not a transliterator object as first argument */
                        int res;
                        if(Z_TYPE_PP( arg1 ) != IS_STRING )
                        {
                                SEPARATE_ZVAL( arg1 );
                                convert_to_string( *arg1 );
                        }
                        ALLOC_INIT_ZVAL( object );
                        temp_trans = 1;
                        res = create_transliterator( Z_STRVAL_PP( arg1 ), Z_STRLEN_PP( arg1 ),
                                        TRANSLITERATOR_FORWARD, object TSRMLS_CC );
                        if( res == FAILURE )
                        {
                                char *message = intl_error_get_message( NULL TSRMLS_CC );
                                php_error_docref0( NULL TSRMLS_CC, E_WARNING, "Could not create "
                                        "transliterator with ID \"%s\" (%s)", Z_STRVAL_PP( arg1 ), message );
                                efree( message );
                                /* don't set U_ILLEGAL_ARGUMENT_ERROR to allow fetching of inner error */
                                goto cleanup;
                        }
                }
        }
        else if( zend_parse_parameters( ZEND_NUM_ARGS() TSRMLS_CC, "s|ll",
                &str, &str_len, &start, &limit ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_transliterate: bad arguments", 0 TSRMLS_CC );
                RETURN_FALSE;
        }
        
        if( limit < -1 )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_transliterate: \"end\" argument should be "
                        "either non-negative or -1", 0 TSRMLS_CC );
                RETURN_FALSE;
        }

        if( start < 0 || ((limit != -1 ) && (start > limit )) )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_transliterate: \"start\" argument should be "
                        "non-negative and not bigger than \"end\" (if defined)", 0 TSRMLS_CC );
                RETURN_FALSE;
        }

        /* end argument parsing/validation */

        TRANSLITERATOR_METHOD_FETCH_OBJECT;
        
        intl_convert_utf8_to_utf16( &ustr, &ustr_len, str, str_len,
                TRANSLITERATOR_ERROR_CODE_P( to ) );
        INTL_METHOD_CHECK_STATUS( to, "String conversion of string to UTF-16 failed" );

        /* we've started allocating resources, goto from now on */

        if( ( start > ustr_len ) || (( limit != -1 ) && (limit > ustr_len ) ) )
        {
                char *msg;
                spprintf( &msg, 0,
                        "transliterator_transliterate: Neither \"start\" nor the \"end\" "
                        "arguments can exceed the number of UTF-16 code units "
                        "(in this case, %d)", (int) ustr_len );
                if(msg != NULL )
                {
                        intl_errors_set( TRANSLITERATOR_ERROR_P( to ), U_ILLEGAL_ARGUMENT_ERROR,
                                msg, 1 TSRMLS_CC );
                        efree( msg );
                }
                RETVAL_FALSE;
                goto cleanup;
        }

        uresult = safe_emalloc( ustr_len, sizeof( UChar ), 1 * sizeof( UChar ) );
        capacity = ustr_len + 1;

        while( 1 )
        {
                int32_t temp_limit = ( limit == -1 ? ustr_len : (int32_t) limit );
                memcpy( uresult, ustr, ustr_len * sizeof( UChar ) );
                uresult_len = ustr_len;

                utrans_transUChars( to->utrans, uresult, &uresult_len, capacity, (int32_t) start,
                        &temp_limit, TRANSLITERATOR_ERROR_CODE_P( to ) );
                if( TRANSLITERATOR_ERROR_CODE( to ) == U_BUFFER_OVERFLOW_ERROR )
                {
                        efree( uresult );

                        uresult = safe_emalloc( uresult_len, sizeof( UChar ), 1 * sizeof( UChar ) );
                        capacity = uresult_len + 1;

                        intl_error_reset( TRANSLITERATOR_ERROR_P( to ) TSRMLS_CC );
                }
                else if(TRANSLITERATOR_ERROR_CODE( to ) == U_STRING_NOT_TERMINATED_WARNING )
                {
                        uresult = safe_erealloc( uresult, uresult_len, sizeof( UChar ), 1 * sizeof( UChar ) );
                        
                        intl_error_reset( TRANSLITERATOR_ERROR_P( to ) TSRMLS_CC );
                        break;
                }
                else if( U_FAILURE( TRANSLITERATOR_ERROR_CODE( to ) ) )
                {
                        intl_error_set_code( NULL, TRANSLITERATOR_ERROR_CODE( to ) TSRMLS_CC );
                        intl_errors_set_custom_msg( TRANSLITERATOR_ERROR_P( to ),
                                "transliterator_transliterate: transliteration failed", 0 TSRMLS_CC );
                        goto cleanup;
                }
                else
                        break;
        }

        uresult[uresult_len] = (UChar) 0;
        
        success = 1;

cleanup:
        if( ustr )
                efree( ustr );

        if( success ) {
                /* frees uresult even on error */
                INTL_METHOD_RETVAL_UTF8( to, uresult, uresult_len, 1 );
        }
        else
        {
                if( uresult )
                        efree( uresult );
                RETVAL_FALSE;
        }

        if (temp_trans )
                zval_ptr_dtor( &object );
}
/* }}} */

PHP_METHOD( Transliterator, __construct )
{
        /* this constructor shouldn't be called as it's private */
        zend_throw_exception( NULL,
                "An object of this type cannot be created with the new operator.",
                0 TSRMLS_CC );
}

/* {{{ proto int transliterator_get_error_code( Transliterator trans )
 *     proto int Transliterator::getErrorCode()
 * Get the last error code for this transliterator.
 */
PHP_FUNCTION( transliterator_get_error_code )
{
        TRANSLITERATOR_METHOD_INIT_VARS

        if( zend_parse_method_parameters( ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "O",
                &object, Transliterator_ce_ptr ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_get_error_code: unable to parse input params", 0 TSRMLS_CC );

                RETURN_FALSE;
        }

        /* Fetch the object (without resetting its last error code ). */
        to = zend_object_store_get_object( object TSRMLS_CC );
        if (to == NULL )
                RETURN_FALSE;

        RETURN_LONG( (long) TRANSLITERATOR_ERROR_CODE( to ) );
}
/* }}} */


/* {{{ proto string transliterator_get_error_message( Transliterator trans )
 *     proto string Transliterator::getErrorMessage()
 * Get the last error message for this transliterator.
 */
PHP_FUNCTION( transliterator_get_error_message )
{
        const char* message = NULL;
        TRANSLITERATOR_METHOD_INIT_VARS

        if( zend_parse_method_parameters( ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "O",
                &object, Transliterator_ce_ptr ) == FAILURE )
        {
                intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
                        "transliterator_get_error_message: unable to parse input params", 0 TSRMLS_CC );

                RETURN_FALSE;
        }


        /* Fetch the object (without resetting its last error code ). */
        to = zend_object_store_get_object( object TSRMLS_CC );
        if (to == NULL )
                RETURN_FALSE;

        /* Return last error message. */
        message = intl_error_get_message( TRANSLITERATOR_ERROR_P( to ) TSRMLS_CC );
        RETURN_STRING( message, 0 );
}
/* }}} */


/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */

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