root/ext/tokenizer/tokenizer.c

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DEFINITIONS

This source file includes following definitions.
  1. ZEND_GET_MODULE
  2. PHP_MINFO_FUNCTION
  3. tokenize
  4. PHP_FUNCTION
  5. PHP_FUNCTION

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | 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.               |
   +----------------------------------------------------------------------+
   | Author: Andrei Zmievski <andrei@php.net>                             |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

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

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_tokenizer.h"

#include "zend.h"
#include "zend_language_scanner.h"
#include "zend_language_scanner_defs.h"
#include <zend_language_parser.h>

#define zendtext   LANG_SCNG(yy_text)
#define zendleng   LANG_SCNG(yy_leng)
#define zendcursor LANG_SCNG(yy_cursor)
#define zendlimit  LANG_SCNG(yy_limit)

/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_token_get_all, 0, 0, 1)
        ZEND_ARG_INFO(0, source)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO_EX(arginfo_token_name, 0, 0, 1)
        ZEND_ARG_INFO(0, token)
ZEND_END_ARG_INFO()
/* }}} */

/* {{{ tokenizer_functions[]
 *
 * Every user visible function must have an entry in tokenizer_functions[].
 */
const zend_function_entry tokenizer_functions[] = {
        PHP_FE(token_get_all,   arginfo_token_get_all)
        PHP_FE(token_name,              arginfo_token_name)
        PHP_FE_END
};
/* }}} */

/* {{{ tokenizer_module_entry
 */
zend_module_entry tokenizer_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
        STANDARD_MODULE_HEADER,
#endif
        "tokenizer",
        tokenizer_functions,
        PHP_MINIT(tokenizer),
        NULL,
        NULL,
        NULL,
        PHP_MINFO(tokenizer),
#if ZEND_MODULE_API_NO >= 20010901
        "0.1", /* Replace with version number for your extension */
#endif
        STANDARD_MODULE_PROPERTIES
};
/* }}} */

#ifdef COMPILE_DL_TOKENIZER
ZEND_GET_MODULE(tokenizer)
#endif

/* {{{ PHP_MINIT_FUNCTION
 */
PHP_MINIT_FUNCTION(tokenizer)
{
        tokenizer_register_constants(INIT_FUNC_ARGS_PASSTHRU);
        return SUCCESS;
}
/* }}} */

/* {{{ PHP_MINFO_FUNCTION
 */
PHP_MINFO_FUNCTION(tokenizer)
{
        php_info_print_table_start();
        php_info_print_table_row(2, "Tokenizer Support", "enabled");
        php_info_print_table_end();
}
/* }}} */

static void tokenize(zval *return_value TSRMLS_DC)
{
        zval token;
        zval *keyword;
        int token_type;
        zend_bool destroy;
        int token_line = 1;
        int need_tokens = -1; // for __halt_compiler lexing. -1 = disabled

        array_init(return_value);

        ZVAL_NULL(&token);
        while ((token_type = lex_scan(&token TSRMLS_CC))) {
                destroy = 1;
                switch (token_type) {
                        case T_CLOSE_TAG:
                                if (zendtext[zendleng - 1] != '>') {
                                        CG(zend_lineno)++;
                                }
                        case T_OPEN_TAG:
                        case T_OPEN_TAG_WITH_ECHO:
                        case T_WHITESPACE:
                        case T_COMMENT:
                        case T_DOC_COMMENT:
                                destroy = 0;
                                break;
                }

                if (token_type >= 256) {
                        MAKE_STD_ZVAL(keyword);
                        array_init(keyword);
                        add_next_index_long(keyword, token_type);
                        if (token_type == T_END_HEREDOC) {
                                if (CG(increment_lineno)) {
                                        token_line = ++CG(zend_lineno);
                                        CG(increment_lineno) = 0;
                                }
                        }
                        add_next_index_stringl(keyword, (char *)zendtext, zendleng, 1);
                        add_next_index_long(keyword, token_line);
                        add_next_index_zval(return_value, keyword);
                } else {
                        add_next_index_stringl(return_value, (char *)zendtext, zendleng, 1);
                }
                if (destroy && Z_TYPE(token) != IS_NULL) {
                        zval_dtor(&token);
                }
                ZVAL_NULL(&token);

                // after T_HALT_COMPILER collect the next three non-dropped tokens
                if (need_tokens != -1) {
                        if (token_type != T_WHITESPACE && token_type != T_OPEN_TAG
                            && token_type != T_COMMENT && token_type != T_DOC_COMMENT
                            && --need_tokens == 0
                        ) {
                                // fetch the rest into a T_INLINE_HTML
                                if (zendcursor != zendlimit) {
                                        MAKE_STD_ZVAL(keyword);
                                        array_init(keyword);
                                        add_next_index_long(keyword, T_INLINE_HTML);
                                        add_next_index_stringl(keyword, (char *)zendcursor, zendlimit - zendcursor, 1);
                                        add_next_index_long(keyword, token_line);
                                        add_next_index_zval(return_value, keyword);
                                }
                                break;
                        }
                } else if (token_type == T_HALT_COMPILER) {
                        need_tokens = 3;
                }

                token_line = CG(zend_lineno);
        }
}

/* {{{ proto array token_get_all(string source)
 */
PHP_FUNCTION(token_get_all)
{
        char *source = NULL;
        int argc = ZEND_NUM_ARGS();
        int source_len;
        zval source_z;
        zend_lex_state original_lex_state;

        if (zend_parse_parameters(argc TSRMLS_CC, "s", &source, &source_len) == FAILURE) {
                return;
        }

        ZVAL_STRINGL(&source_z, source, source_len, 1);
        zend_save_lexical_state(&original_lex_state TSRMLS_CC);

        if (zend_prepare_string_for_scanning(&source_z, "" TSRMLS_CC) == FAILURE) {
                zend_restore_lexical_state(&original_lex_state TSRMLS_CC);
                RETURN_FALSE;
        }

        LANG_SCNG(yy_state) = yycINITIAL;

        tokenize(return_value TSRMLS_CC);
        
        zend_restore_lexical_state(&original_lex_state TSRMLS_CC);
        zval_dtor(&source_z);
}
/* }}} */

/* {{{ proto string token_name(int type)
 */
PHP_FUNCTION(token_name)
{
        int argc = ZEND_NUM_ARGS();
        long type;

        if (zend_parse_parameters(argc TSRMLS_CC, "l", &type) == FAILURE) {
                return;
        }
        RETVAL_STRING(get_token_type_name(type), 1);
}
/* }}} */

/*
 * 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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