jsonreader.c

/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 1997-2008 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: Shahar Evron, shahar@prematureoptimization.org               |
  +----------------------------------------------------------------------+
*/

/* $Id: header,v 1.16.2.1.2.1.2.1 2008/02/07 19:39:50 iliaa Exp $ */

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

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_jsonreader.h"
#include "zend_exceptions.h"

#include "libvktor/vktor.h"

ZEND_DECLARE_MODULE_GLOBALS(jsonreader)

static zend_object_handlers  jsonreader_obj_handlers;
static zend_class_entry     *jsonreader_ce;
static zend_class_entry     *jsonreader_exception_ce;

const HashTable jsonreader_prop_handlers;

typedef struct _jsonreader_object { 
	zend_object   std;
	php_stream   *stream;
	vktor_parser *parser;
	zend_bool     close_stream;
	long          max_depth;
	long          read_buffer;
	int           errmode;
} jsonreader_object;

#define JSONREADER_REG_CLASS_CONST_L(name, value) \
	zend_declare_class_constant_long(jsonreader_ce, name, sizeof(name) - 1, \
	(long) value TSRMLS_CC)

#define JSONREADER_VALUE_TOKEN VKTOR_T_NULL  | \
                               VKTOR_T_TRUE  | \
							   VKTOR_T_FALSE | \
							   VKTOR_T_INT   | \
							   VKTOR_T_FLOAT | \
							   VKTOR_T_STRING

/* {{{ attribute keys and possible values */
enum {
	ATTR_MAX_DEPTH = 1,
	ATTR_READ_BUFF,
	ATTR_ERRMODE,

	ERRMODE_PHPERR,
	ERRMODE_EXCEPT,
	ERRMODE_INTERN
};
/* }}} */

/* }}} */

/* {{{ Memory management functions wrapping emalloc etc. */

/* {{{ jsr_malloc
   Wrapper for PHP's emalloc, passed to libvktor as malloc alternative */
static void *jsr_malloc(size_t size)
{
	return emalloc(size);
}
/* }}} */

/* {{{ jsr_realloc
   Wrapper for PHP's erealloc, passed to libvktor as realloc alternative */
static void *jsr_realloc(void *ptr, size_t size)
{
	return erealloc(ptr, size);
}
/* }}} */

/* {{{ jsr_free 
   Wrapper for PHP's efree, passed to libvktor as free alternative */
static void jsr_free(void *ptr)
{
	efree(ptr);
}
/* }}} */

/* }}} */

/* {{{ jsonreader_handle_error
   Handle a parser error - for now generate an E_WARNING, in the future this might
   also do things like throw an exception or use an internal error handler */
static void jsonreader_handle_error(vktor_error *err, jsonreader_object *obj TSRMLS_DC)
{
	switch(obj->errmode) {
		case ERRMODE_PHPERR:
			php_error_docref(NULL TSRMLS_CC, E_WARNING, "parser error [#%d]: %s", 
				err->code, err->message);
			break;

		case ERRMODE_EXCEPT:
			zend_throw_exception_ex(jsonreader_exception_ce, err->code TSRMLS_CC, 
				err->message);
			break;

		default: // For now emit a PHP WARNING
			php_error_docref(NULL TSRMLS_CC, E_WARNING, "parser error [#%d]: %s", 
				err->code, err->message);
			break;
	}

	vktor_error_free(err);
}
/* }}} */

/* {{{ Property access related functions and type definitions */

typedef int (*jsonreader_read_t)  (jsonreader_object *obj, zval **retval TSRMLS_DC);
typedef int (*jsonreader_write_t) (jsonreader_object *obj, zval *newval TSRMLS_DC); 

typedef struct _jsonreader_prop_handler {
	jsonreader_read_t   read_func;
	jsonreader_write_t  write_func;
} jsonreader_prop_handler;

/* {{{ jsonreader_read_na 
   Called when a user tries to read a write-only property of a JSONReader object */
static int jsonreader_read_na(jsonreader_object *obj, zval **retval TSRMLS_DC)
{
	*retval = NULL;
	php_error_docref(NULL TSRMLS_CC, E_ERROR, "trying to read a write-only property");
	return FAILURE;
}
/* }}} */

/* {{{ jsonreader_write_na 
   Called when a user tries to write to a read-only property of a JSONReader object */
static int jsonreader_write_na(jsonreader_object *obj, zval *newval TSRMLS_DC)
{
	php_error_docref(NULL TSRMLS_CC, E_ERROR, "trying to modify a read-only property");
	return FAILURE;
}
/* }}} */

/* {{{ jsonreader_register_prop_handler 
   Register a read/write handler for a specific property of JSONReader objects */
static void jsonreader_register_prop_handler(char *name, jsonreader_read_t read_func, jsonreader_write_t write_func TSRMLS_DC)
{
	jsonreader_prop_handler jph;

	jph.read_func  = read_func ? read_func : jsonreader_read_na;
	jph.write_func = write_func ? write_func : jsonreader_write_na;

	zend_hash_add((HashTable *) &jsonreader_prop_handlers, name, strlen(name) + 1, &jph, 
		sizeof(jsonreader_prop_handler), NULL);
}
/* }}} */

/* {{{ jsonreader_read_property
   Property read handler */
zval* jsonreader_read_property(zval *object, zval *member, int type TSRMLS_DC)
{
	jsonreader_object       *intern;
	zval                     tmp_member;
	zval                    *retval;
	jsonreader_prop_handler *jph;
	zend_object_handlers    *std_hnd;
	int                      ret;

	if (Z_TYPE_P(member) != IS_STRING) {
		tmp_member = *member;
		zval_copy_ctor(&tmp_member);
		convert_to_string(&tmp_member);
		member = &tmp_member;
	}

	ret = FAILURE;
	intern = (jsonreader_object *) zend_objects_get_address(object TSRMLS_CC);

	ret = zend_hash_find(&jsonreader_prop_handlers, Z_STRVAL_P(member), 
		Z_STRLEN_P(member) + 1, (void **) &jph);

	if (ret == SUCCESS) {
		ret = jph->read_func(intern, &retval TSRMLS_CC);
		if (ret == SUCCESS) {
			Z_SET_REFCOUNT_P(retval, 0);
		} else {
			retval = EG(uninitialized_zval_ptr);
		}
	} else {
		std_hnd = zend_get_std_object_handlers();
#if PHP_VERSION_ID < 50399
		retval = std_hnd->read_property(object, member, type TSRMLS_CC);
#else
		retval = std_hnd->read_property(object, member, type TSRMLS_CC, NULL);
#endif

	}

	if (member == &tmp_member) { 
		zval_dtor(member);
	}

	return retval;
}
/* }}} */

/* {{{ jsonreader_write_property */
void jsonreader_write_property(zval *object, zval *member, zval *value TSRMLS_DC)
{
	jsonreader_object       *intern;
	zval                     tmp_member;
	jsonreader_prop_handler *jph;
	zend_object_handlers    *std_hnd;
	int                      ret;

	if (Z_TYPE_P(member) != IS_STRING) {
		tmp_member = *member;
		zval_copy_ctor(&tmp_member);
		convert_to_string(&tmp_member);
		member = &tmp_member;
	}

	ret = FAILURE;
	intern = (jsonreader_object *) zend_objects_get_address(object TSRMLS_CC);

	ret = zend_hash_find(&jsonreader_prop_handlers, Z_STRVAL_P(member), 
		Z_STRLEN_P(member) + 1, (void **) &jph);

	if (ret == SUCCESS) {
		jph->write_func(intern, value TSRMLS_CC);
	} else {
		std_hnd = zend_get_std_object_handlers();
#if PHP_VERSION_ID < 50399
		std_hnd->write_property(object, member, value TSRMLS_CC);
#else
		std_hnd->write_property(object, member, value TSRMLS_CC, NULL);
#endif
	}

	if (member == &tmp_member) { 
		zval_dtor(member);
	}
}
/* }}} */

/* {{{ jsonreader_get_token_type
   Get the type of the current token */
static int jsonreader_get_token_type(jsonreader_object *obj, zval **retval TSRMLS_DC)
{
	vktor_token token;

	ALLOC_ZVAL(*retval);

	if (! obj->parser) {
		ZVAL_NULL(*retval);

	} else {
		token = vktor_get_token_type(obj->parser);
		if (token == VKTOR_T_NONE) {
			ZVAL_NULL(*retval);
		} else {
			ZVAL_LONG(*retval, token);
		}
	}

	return SUCCESS;
}
/* }}} */

/* {{{ jsonreader_get_token_value
   Get the value of the current token */
static int jsonreader_get_token_value(jsonreader_object *obj, zval **retval TSRMLS_DC)
{
	vktor_token  t_type;
	vktor_error *err = NULL;

	ALLOC_ZVAL(*retval);

	if (! obj->parser) {
		ZVAL_NULL(*retval);

	} else {
		t_type = vktor_get_token_type(obj->parser);
		switch(t_type) {
			case VKTOR_T_NONE:
			case VKTOR_T_NULL:
			case VKTOR_T_ARRAY_START:
			case VKTOR_T_ARRAY_END:
			case VKTOR_T_OBJECT_START:
			case VKTOR_T_OBJECT_END:
				ZVAL_NULL(*retval);
				break;

			case VKTOR_T_FALSE:
			case VKTOR_T_TRUE:
				ZVAL_BOOL(*retval, (t_type == VKTOR_T_TRUE));
				break;

			case VKTOR_T_OBJECT_KEY:
			case VKTOR_T_STRING: {
				char *strval;
				int   strlen;

				strlen = vktor_get_value_str(obj->parser, &strval, &err);
				if (err != NULL) {
					ZVAL_NULL(*retval);
					jsonreader_handle_error(err, obj TSRMLS_CC);
					return FAILURE;
				}

				ZVAL_STRINGL(*retval, strval, strlen, 1);
				break;
			}
			
			case VKTOR_T_INT:
				ZVAL_LONG(*retval, vktor_get_value_long(obj->parser, &err));
				if (err != NULL) {
					ZVAL_NULL(*retval);
					jsonreader_handle_error(err, obj TSRMLS_CC);
					return FAILURE;
				}
				break;

			case VKTOR_T_FLOAT:
				ZVAL_DOUBLE(*retval, vktor_get_value_double(obj->parser, &err));
				if (err != NULL) {
					ZVAL_NULL(*retval);
					jsonreader_handle_error(err, obj TSRMLS_CC);
					return FAILURE;
				}
				break;

			default: /* should not happen */
				php_error_docref(NULL TSRMLS_CC, E_ERROR, 
					"internal error: unkown token type %d", t_type);
				return FAILURE;
				break;
		}
	}

	return SUCCESS;
}
/* }}} */

/* {{{ jsonreader_get_current_struct 
   Get the type of the current JSON struct we are in (object, array or none) */
static int jsonreader_get_current_struct(jsonreader_object *obj, zval **retval TSRMLS_DC)
{
	vktor_struct cs;

	ALLOC_ZVAL(*retval);

	if (! obj->parser) {
		ZVAL_NULL(*retval);
	
	} else {
		cs = vktor_get_current_struct(obj->parser);
		if (cs == VKTOR_STRUCT_NONE) {
			ZVAL_NULL(*retval);
		} else {
			ZVAL_LONG(*retval, cs);
		}
	}

	return SUCCESS;
}
/* }}} */

/* {{{ jsonreader_get_current_depth 
   Get the current nesting level */
static int jsonreader_get_current_depth(jsonreader_object *obj, zval **retval TSRMLS_DC)
{
	int depth;

	ALLOC_ZVAL(*retval);
	
	if (! obj->parser) {
		ZVAL_NULL(*retval);
	
	} else {
		depth = vktor_get_depth(obj->parser);
		ZVAL_LONG(*retval, depth);
	}

	return SUCCESS;
}
/* }}} */

/* }}} */

/* {{{ jsonreader_object_free_storage 
   C-level object destructor for JSONReader objects */
static void jsonreader_object_free_storage(void *object TSRMLS_DC) 
{
	jsonreader_object *intern = (jsonreader_object *) object;

	zend_object_std_dtor(&intern->std TSRMLS_CC);

	if (intern->parser) {
		vktor_parser_free(intern->parser);
	}

	if (intern->stream && intern->close_stream) {
		php_stream_close(intern->stream);
	}

	efree(object);
}
/* }}} */

/* {{{ jsonreader_object_new 
   C-level constructor of JSONReader objects. Does not initialize the vktor 
   parser - this will be initialized when needed, by calling jsonreader_init() */
static zend_object_value jsonreader_object_new(zend_class_entry *ce TSRMLS_DC) 
{
	zend_object_value  retval;
	jsonreader_object *intern;

	intern = ecalloc(1, sizeof(jsonreader_object));
	intern->max_depth = JSONREADER_G(max_depth);
	intern->read_buffer = JSONREADER_G(read_buffer);
	intern->errmode = ERRMODE_PHPERR;

	zend_object_std_init(&(intern->std), ce TSRMLS_CC);
  
#if PHP_VERSION_ID < 50399
	zend_hash_copy(intern->std.properties, &ce->default_properties, 
		(copy_ctor_func_t) zval_add_ref, NULL, sizeof(zval *));
#else
  object_properties_init(&(intern->std), ce);
#endif

	retval.handle = zend_objects_store_put(intern, 
		(zend_objects_store_dtor_t) zend_objects_destroy_object, 
		(zend_objects_free_object_storage_t) jsonreader_object_free_storage, 
		NULL TSRMLS_CC);

	retval.handlers = &jsonreader_obj_handlers;

	return retval;
}
/* }}} */

/* {{{ jsonreader_init 
   Initialize or reset an internal jsonreader object struct. Will close & free
   any stream opened by the reader, and initialize the associated vktor parser 
   (and free the old parser, if exists) */
static void jsonreader_init(jsonreader_object *obj TSRMLS_DC)
{
	if (obj->parser) {
		vktor_parser_free(obj->parser);
	}
	obj->parser = vktor_parser_init(obj->max_depth);

	if (obj->stream) {
		php_stream_close(obj->stream);
	}
}
/* }}} */

/* {{{ jsonreader_read_more_data 
   Read more data from the stream and pass it to the parser  */
static int jsonreader_read_more_data(jsonreader_object *obj TSRMLS_DC)
{
	char         *buffer;
	int           read;
	vktor_status  status;
	vktor_error  *err;
	
	buffer = emalloc(sizeof(char) * obj->read_buffer);

	read = php_stream_read(obj->stream, buffer, obj->read_buffer);
	if (read <= 0) {
		/* done reading or error */
		php_error_docref(NULL TSRMLS_CC, E_WARNING, "JSON stream ended while expecting more data");
		return FAILURE;
	}

	status = vktor_feed(obj->parser, buffer, read, 1, &err);
	if (status == VKTOR_ERROR) {
		jsonreader_handle_error(err, obj TSRMLS_CC);
		return FAILURE;
	}

	return SUCCESS;
}
/* }}} */

/* {{{ jsonreader_read
   Read the next token from the JSON stream */
static int jsonreader_read(jsonreader_object *obj TSRMLS_DC)
{
	vktor_status  status = VKTOR_OK;
	vktor_error  *err;
	int           retval;

	do {
		status = vktor_parse(obj->parser, &err);

		switch(status) {
			case VKTOR_OK:
				retval = SUCCESS;
				break;

			case VKTOR_COMPLETE:
				retval = FAILURE; /* done, not really a failure */
				break;

			case VKTOR_ERROR:
				jsonreader_handle_error(err, obj TSRMLS_CC);
				retval = FAILURE; 
				break;

			case VKTOR_MORE_DATA:
				if (jsonreader_read_more_data(obj TSRMLS_CC) == FAILURE) {
					retval = FAILURE;
					status = VKTOR_ERROR;
				}
				break;

			default:
				/* should not happen! */
				php_error_docref(NULL TSRMLS_CC, E_ERROR, "invalid status from internal JSON parser");
				retval = FAILURE;
				break;
		}

	} while (status == VKTOR_MORE_DATA);

	return retval; 
}
/* }}} */

/* {{{ jsonreader_set_attribute 
   set an attribute of the JSONReader object */
static void jsonreader_set_attribute(jsonreader_object *obj, ulong attr_key, zval *attr_value TSRMLS_DC)
{
	long lval = Z_LVAL_P(attr_value);

	switch(attr_key) {
		case ATTR_MAX_DEPTH:
			if (lval < 1) {
				php_error_docref(NULL TSRMLS_CC, E_WARNING, "maximal nesting level must be more than 0, %ld given", lval);
			} else {
				obj->max_depth = lval;
			}
			break;

		case ATTR_READ_BUFF:
			if (lval < 1) {
				php_error_docref(NULL TSRMLS_CC, E_WARNING, "read buffer size must be more than 0, %ld given", lval);
			} else {
				obj->read_buffer = lval;
			}
			break;

		case ATTR_ERRMODE:
			switch(lval) {
				case ERRMODE_PHPERR:
				case ERRMODE_EXCEPT:
				case ERRMODE_INTERN:
					obj->errmode = (int) lval;
					break;

				default:
					php_error_docref(NULL TSRMLS_CC, E_WARNING, 
						"invalid error handler attribute value: %ld", lval);
					break;
			}
			break;
	}
}

/* {{{ proto void JSONReader::__construct([array options])
   Create a new JSONReader object, potentially setting some local attributes */
PHP_METHOD(jsonreader, __construct)
{
	zval *object = getThis();
	zval *options = NULL;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|a", &options) == FAILURE) {
		ZVAL_NULL(object);
		return;
	}

	/* got attributes - set them */
	if (options != NULL) {
		jsonreader_object  *intern;
		zval              **attr_value;
		char               *str_key;
		ulong               long_key;

		intern = (jsonreader_object *) zend_object_store_get_object(object TSRMLS_CC);
		zend_hash_internal_pointer_reset(Z_ARRVAL_P(options));
		while (zend_hash_get_current_data(Z_ARRVAL_P(options), (void **) &attr_value) == SUCCESS &&
			zend_hash_get_current_key(Z_ARRVAL_P(options), &str_key, &long_key, 0) == HASH_KEY_IS_LONG) {

			jsonreader_set_attribute(intern, long_key, *attr_value TSRMLS_CC);
			zend_hash_move_forward(Z_ARRVAL_P(options));
		}
	}
}
/* }}} */

/* {{{ proto boolean JSONReader::open(mixed URI)
   Opens the URI (any valid PHP stream URI) that JSONReader will read
   from. Can accept either a URI as a string, or an already-open stream 
   resource. Returns TRUE on success or FALSE on failure. */
PHP_METHOD(jsonreader, open)
{
	zval               *object, *arg;
	jsonreader_object  *intern;
	php_stream         *tmp_stream;
	int                 options = ENFORCE_SAFE_MODE | REPORT_ERRORS;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &arg) == FAILURE) {
		return;
	}

	object = getThis();
	intern = (jsonreader_object *) zend_object_store_get_object(object TSRMLS_CC);

	switch(Z_TYPE_P(arg)) {
		case IS_STRING:
			tmp_stream = php_stream_open_wrapper(Z_STRVAL_P(arg), "r", options, NULL);
			intern->close_stream = 1;
			break;

		case IS_RESOURCE:
			php_stream_from_zval(tmp_stream, &arg);
			intern->close_stream = 0;
			break;

		default:
			php_error_docref(NULL TSRMLS_CC, E_ERROR, 
				"argument is expected to be a resource of type stream or a string, %s given",
				zend_zval_type_name(arg));
			RETURN_FALSE;
			break;

	}

	jsonreader_init(intern TSRMLS_CC);
	intern->stream = tmp_stream;

	RETURN_TRUE;
}
/* }}} */

/* {{{ proto boolean JSONReader::close()
   Close the currently open JSON stream and free related resources */
PHP_METHOD(jsonreader, close)
{
	zval              *object;
	jsonreader_object *intern;

	object = getThis();
	intern = (jsonreader_object *) zend_object_store_get_object(object TSRMLS_CC);

	/* Close stream, if open */
	if (intern->stream) {
		php_stream_close(intern->stream);
		intern->stream = NULL;
	}

	/* Free parser, if created */
	if (intern->parser) {
		vktor_parser_free(intern->parser);
		intern->parser = NULL;
	}

	RETURN_TRUE;
}
/* }}} */

/* {{{ proto boolean JSONReader::read() 
   Read the next token from the JSON stream. Retuns TRUE as long as something is
   read, or FALSE when there is nothing left to read, or when an error occured. */
PHP_METHOD(jsonreader, read)
{
	zval              *object;
	jsonreader_object *intern;

	RETVAL_TRUE;

	object = getThis();
	intern = (jsonreader_object *) zend_object_store_get_object(object TSRMLS_CC);

	if (! intern->stream) {
		php_error_docref(NULL TSRMLS_CC, E_WARNING, 
			"trying to read but no stream was opened");
		RETURN_FALSE;
	}

	/* TODO: replace assertion with an if(!) and init parser (?) */
	assert(intern->parser != NULL);

	if (jsonreader_read(intern TSRMLS_CC) != SUCCESS) {
		RETVAL_FALSE;
	}
}
/* }}} */

/* {{{ ARG_INFO */
ZEND_BEGIN_ARG_INFO(arginfo_jsonreader___construct, 0)
	ZEND_ARG_INFO(0, attributes)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_jsonreader_open, 0)
	ZEND_ARG_INFO(0, URI)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_jsonreader_close, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_jsonreader_read, 0)
ZEND_END_ARG_INFO()
/* }}} */

/* {{{ zend_function_entry jsonreader_class_methods */
static const zend_function_entry jsonreader_class_methods[] = {
	PHP_ME(jsonreader, __construct, arginfo_jsonreader___construct, ZEND_ACC_PUBLIC | ZEND_ACC_CTOR)
	PHP_ME(jsonreader, open,  arginfo_jsonreader_open,  ZEND_ACC_PUBLIC)
	PHP_ME(jsonreader, close, arginfo_jsonreader_close, ZEND_ACC_PUBLIC)
	PHP_ME(jsonreader, read,  arginfo_jsonreader_read,  ZEND_ACC_PUBLIC)
	{NULL, NULL, NULL}
};
/* }}} */

#ifdef COMPILE_DL_JSONREADER
ZEND_GET_MODULE(jsonreader)
#endif

/* {{{ PHP_INI */
PHP_INI_BEGIN()
    STD_PHP_INI_ENTRY("jsonreader.max_depth", "64", PHP_INI_ALL, OnUpdateLong, max_depth, zend_jsonreader_globals, jsonreader_globals)
    STD_PHP_INI_ENTRY("jsonreader.read_buffer", "4096", PHP_INI_ALL, OnUpdateLong, read_buffer, zend_jsonreader_globals, jsonreader_globals)
PHP_INI_END()
/* }}} */

/* {{{ PHP_GINIT_FUNCTION */
PHP_GINIT_FUNCTION(jsonreader)
{
	jsonreader_globals->max_depth = 64;
	jsonreader_globals->read_buffer       = 4096;
}
/* }}} */

/* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(jsonreader)
{
	zend_class_entry ce;

	REGISTER_INI_ENTRIES();

	/**
	 * Declare the JSONReader class 
	 */

	/* Set object handlers */
	zend_hash_init((HashTable *) &jsonreader_prop_handlers, 0, NULL, NULL, 1);
	memcpy(&jsonreader_obj_handlers, zend_get_std_object_handlers(), 
		sizeof(zend_object_handlers));
	jsonreader_obj_handlers.read_property = jsonreader_read_property;
	jsonreader_obj_handlers.write_property = jsonreader_write_property;

	/* Initalize the class entry */
	INIT_CLASS_ENTRY(ce, "JSONReader", jsonreader_class_methods);
	ce.create_object = jsonreader_object_new;

	jsonreader_ce = zend_register_internal_class(&ce TSRMLS_CC);

	/* Register class constants */
	JSONREADER_REG_CLASS_CONST_L("ATTR_MAX_DEPTH", ATTR_MAX_DEPTH);
	JSONREADER_REG_CLASS_CONST_L("ATTR_READ_BUFF", ATTR_READ_BUFF);
	JSONREADER_REG_CLASS_CONST_L("ATTR_ERRMODE",   ATTR_ERRMODE);
	JSONREADER_REG_CLASS_CONST_L("ERRMODE_PHPERR", ERRMODE_PHPERR);
	JSONREADER_REG_CLASS_CONST_L("ERRMODE_EXCEPT", ERRMODE_EXCEPT);
	JSONREADER_REG_CLASS_CONST_L("ERRMODE_INTERN", ERRMODE_INTERN);

	JSONREADER_REG_CLASS_CONST_L("NULL",         VKTOR_T_NULL);
	JSONREADER_REG_CLASS_CONST_L("FALSE",        VKTOR_T_FALSE);
	JSONREADER_REG_CLASS_CONST_L("TRUE",         VKTOR_T_TRUE);
	JSONREADER_REG_CLASS_CONST_L("BOOLEAN",      VKTOR_T_FALSE | VKTOR_T_TRUE);
	JSONREADER_REG_CLASS_CONST_L("INT",          VKTOR_T_INT);
	JSONREADER_REG_CLASS_CONST_L("FLOAT",        VKTOR_T_FLOAT);
	JSONREADER_REG_CLASS_CONST_L("NUMBER",       VKTOR_T_INT | VKTOR_T_FLOAT);
	JSONREADER_REG_CLASS_CONST_L("STRING",       VKTOR_T_STRING);
	JSONREADER_REG_CLASS_CONST_L("VALUE",        JSONREADER_VALUE_TOKEN);
	JSONREADER_REG_CLASS_CONST_L("ARRAY_START",  VKTOR_T_ARRAY_START);
	JSONREADER_REG_CLASS_CONST_L("ARRAY_END",    VKTOR_T_ARRAY_END);
	JSONREADER_REG_CLASS_CONST_L("OBJECT_START", VKTOR_T_OBJECT_START);
	JSONREADER_REG_CLASS_CONST_L("OBJECT_KEY",   VKTOR_T_OBJECT_KEY);
	JSONREADER_REG_CLASS_CONST_L("OBJECT_END",   VKTOR_T_OBJECT_END);

	JSONREADER_REG_CLASS_CONST_L("ARRAY",        VKTOR_STRUCT_ARRAY);
	JSONREADER_REG_CLASS_CONST_L("OBJECT",       VKTOR_STRUCT_OBJECT);

	/* Register property handlers */
	jsonreader_register_prop_handler("tokenType", jsonreader_get_token_type, NULL TSRMLS_CC);
	jsonreader_register_prop_handler("value", jsonreader_get_token_value, NULL TSRMLS_CC);
	jsonreader_register_prop_handler("currentStruct", jsonreader_get_current_struct, NULL TSRMLS_CC);
	jsonreader_register_prop_handler("currentDepth", jsonreader_get_current_depth, NULL TSRMLS_CC);

	/**
	 * Declare the JSONReaderException class
	 */
	INIT_CLASS_ENTRY(ce, "JSONReaderException", NULL);
	jsonreader_exception_ce = zend_register_internal_class_ex(&ce, 
		zend_exception_get_default(TSRMLS_C), NULL TSRMLS_CC);

	/** 
	 * Set libvktor to use PHP memory allocation functions
	 */
	vktor_set_memory_handlers(jsr_malloc, jsr_realloc, jsr_free);

	return SUCCESS;
}
/* }}} */

/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(jsonreader)
{
	UNREGISTER_INI_ENTRIES();
	zend_hash_destroy((HashTable *) &jsonreader_prop_handlers);
	return SUCCESS;
}
/* }}} */

/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(jsonreader)
{
	php_info_print_table_start();
	php_info_print_table_header(2, "jsonreader support", "enabled");
	php_info_print_table_end();

	DISPLAY_INI_ENTRIES();
}
/* }}} */

/* {{{ jsonreader_module_entry */
zend_module_entry jsonreader_module_entry = {
	STANDARD_MODULE_HEADER,
	"JSONReader",
	NULL, 
	PHP_MINIT(jsonreader),
	PHP_MSHUTDOWN(jsonreader),
	NULL,
	NULL,
	PHP_MINFO(jsonreader),
	"0.1",
	PHP_MODULE_GLOBALS(jsonreader),
	PHP_GINIT(jsonreader),
	NULL,
	NULL,
	STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */

/*
 * 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
 */