var.c

php-4.4.7学习linux时下载的源代码

/*
   +----------------------------------------------------------------------+
   | PHP Version 4                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2007 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          |
   | [e-mail] so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Jani Lehtim鋕i <[e-mail]>                               |
   |          Thies C. Arntzen <[e-mail]>                         |
   |          Sascha Schumann <[e-mail]>                        |
   +----------------------------------------------------------------------+
*/

/* $Id: var.c,v 1.150.2.17.2.2 2007/01/01 09:46:49 sebastian Exp $ */


/* {{{ includes 
*/

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "php.h"
#include "php_string.h"
#include "php_var.h"
#include "php_smart_str.h"
#include "basic_functions.h"
#include "php_incomplete_class.h"

#define COMMON ((*struc)->is_ref ? "&" : "")
#define Z_REFCOUNT_PP(a) ((*a)->refcount)

/* }}} */
/* {{{ php_var_dump */

static int php_array_element_dump(zval **zv, int num_args, va_list args, zend_hash_key *hash_key)
{
	int level;
	TSRMLS_FETCH();

	level = va_arg(args, int);

	if (hash_key->nKeyLength==0) { /* numeric key */
		php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
	} else { /* string key */
		php_printf("%*c[\"", level + 1, ' ');
		PHPWRITE(hash_key->arKey, hash_key->nKeyLength - 1);
		php_printf("\"]=>\n");
	}
	php_var_dump(zv, level + 2 TSRMLS_CC);
	return 0;
}

PHPAPI void php_var_dump(zval **struc, int level TSRMLS_DC)
{
	HashTable *myht = NULL;
	zend_object *object = NULL;
	int (*php_element_dump_func)(zval**, int, va_list, zend_hash_key*);

	php_element_dump_func = php_array_element_dump;

	if (level > 1) {
		php_printf("%*c", level - 1, ' ');
	}

	switch (Z_TYPE_PP(struc)) {
	case IS_BOOL:
		php_printf("%sbool(%s)\n", COMMON, Z_LVAL_PP(struc)?"true":"false");
		break;
	case IS_NULL:
		php_printf("%sNULL\n", COMMON);
		break;
	case IS_LONG:
		php_printf("%sint(%ld)\n", COMMON, Z_LVAL_PP(struc));
		break;
	case IS_DOUBLE:
		php_printf("%sfloat(%.*G)\n", COMMON, (int) EG(precision), Z_DVAL_PP(struc));
		break;
	case IS_STRING:
		php_printf("%sstring(%d) \"", COMMON, Z_STRLEN_PP(struc));
		PHPWRITE(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc));
		PUTS("\"\n");
		break;
	case IS_ARRAY:
		myht = Z_ARRVAL_PP(struc);
		if (myht->nApplyCount > 1) {
			PUTS("*RECURSION*\n");
			return;
		}
		php_printf("%sarray(%d) {\n", COMMON, zend_hash_num_elements(myht));
		php_element_dump_func = php_array_element_dump;
		goto head_done;
	case IS_OBJECT:
		object = Z_OBJ_PP(struc);
		myht = Z_OBJPROP_PP(struc);
		if (myht && myht->nApplyCount > 1) {
			PUTS("*RECURSION*\n");
			return;
		}
		php_printf("%sobject(%s)(%d) {\n", COMMON, Z_OBJCE_PP(struc)->name, zend_hash_num_elements(myht));
head_done:
		if (myht) {
			zend_hash_apply_with_arguments(myht, (apply_func_args_t) php_element_dump_func, 1, level);
		}
		if (level > 1) {
			php_printf("%*c", level-1, ' ');
		}
		PUTS("}\n");
		break;
	case IS_RESOURCE: {
		char *type_name;

		type_name = zend_rsrc_list_get_rsrc_type(Z_LVAL_PP(struc) TSRMLS_CC);
		php_printf("%sresource(%ld) of type (%s)\n", COMMON, Z_LVAL_PP(struc), type_name ? type_name : "Unknown");
		break;
	}
	default:
		php_printf("%sUNKNOWN:0\n", COMMON);
		break;
	}
}

/* }}} */



/* {{{ proto void var_dump(mixed var)
   Dumps a string representation of variable to output */
PHP_FUNCTION(var_dump)
{
	zval ***args;
	int argc;
	int	i;
	
	argc = ZEND_NUM_ARGS();
	
	args = (zval ***)safe_emalloc(argc, sizeof(zval **), 0);
	if (ZEND_NUM_ARGS() == 0 || zend_get_parameters_array_ex(argc, args) == FAILURE) {
		efree(args);
		WRONG_PARAM_COUNT;
	}
	
	for (i=0; i<argc; i++)
		php_var_dump(args[i], 1 TSRMLS_CC);
	
	efree(args);
}
/* }}} */

/* {{{ debug_zval_dump */

static int zval_array_element_dump(zval **zv, int num_args, va_list args, zend_hash_key *hash_key)
{
	int level;
	TSRMLS_FETCH();

	level = va_arg(args, int);

	if (hash_key->nKeyLength==0) { /* numeric key */
		php_printf("%*c[%ld]=>\n", level + 1, ' ', hash_key->h);
	} else { /* string key */
		php_printf("%*c[\"", level + 1, ' ');
		PHPWRITE(hash_key->arKey, hash_key->nKeyLength - 1);
		php_printf("\"]=>\n");
	}
	php_debug_zval_dump(zv, level + 2 TSRMLS_CC);
	return 0;
}

PHPAPI void php_debug_zval_dump(zval **struc, int level TSRMLS_DC)
{
	HashTable *myht = NULL;

	if (level > 1) {
		php_printf("%*c", level - 1, ' ');
	}

	switch (Z_TYPE_PP(struc)) {
	case IS_BOOL:
		php_printf("%sbool(%s) refcount(%u)\n", COMMON, Z_LVAL_PP(struc)?"true":"false", Z_REFCOUNT_PP(struc));
		break;
	case IS_NULL:
		php_printf("%sNULL refcount(%u)\n", COMMON, Z_REFCOUNT_PP(struc));
		break;
	case IS_LONG:
		php_printf("%slong(%ld) refcount(%u)\n", COMMON, Z_LVAL_PP(struc), Z_REFCOUNT_PP(struc));
		break;
	case IS_DOUBLE:
		php_printf("%sdouble(%.*G) refcount(%u)\n", COMMON, (int) EG(precision), Z_DVAL_PP(struc), Z_REFCOUNT_PP(struc));
		break;
	case IS_STRING:
		php_printf("%sstring(%d) \"", COMMON, Z_STRLEN_PP(struc));
		PHPWRITE(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc));
		php_printf("\" refcount(%u)\n", Z_REFCOUNT_PP(struc));
		break;
	case IS_ARRAY:
		myht = Z_ARRVAL_PP(struc);
		php_printf("%sarray(%d) refcount(%u){\n", COMMON, zend_hash_num_elements(myht), Z_REFCOUNT_PP(struc));
		goto head_done;
	case IS_OBJECT:
		myht = Z_OBJPROP_PP(struc);
		php_printf("%sobject(%s)(%d) refcount(%u){\n", COMMON, Z_OBJCE_PP(struc)->name, zend_hash_num_elements(myht), Z_REFCOUNT_PP(struc));
head_done:
		if (myht) {
			zend_hash_apply_with_arguments(myht, (apply_func_args_t) zval_array_element_dump, 1, level);
		}
		if (level > 1) {
			php_printf("%*c", level-1, ' ');
		}
		PUTS("}\n");
		break;
	case IS_RESOURCE: {
		char *type_name;

		type_name = zend_rsrc_list_get_rsrc_type(Z_LVAL_PP(struc) TSRMLS_CC);
		php_printf("%sresource(%ld) of type (%s) refcount(%u)\n", COMMON, Z_LVAL_PP(struc), type_name ? type_name : "Unknown", Z_REFCOUNT_PP(struc));
		break;
	}
	default:
		php_printf("%sUNKNOWN:0\n", COMMON);
		break;
	}
}

/* }}} */

/* {{{ proto void debug_zval_dump(mixed var)
   Dumps a string representation of an internal zend value to output. */
PHP_FUNCTION(debug_zval_dump)
{
	zval ***args;
	int argc;
	int	i;
	
	argc = ZEND_NUM_ARGS();
	
	args = (zval ***)safe_emalloc(argc, sizeof(zval **), 0);
	if (ZEND_NUM_ARGS() == 0 || zend_get_parameters_array_ex(argc, args) == FAILURE) {
		efree(args);
		WRONG_PARAM_COUNT;
	}
	
	for (i=0; i<argc; i++)
		php_debug_zval_dump(args[i], 1 TSRMLS_CC);
	
	efree(args);
}
/* }}} */


/* {{{ php_var_export */

static int php_array_element_export(zval **zv, int num_args, va_list args, zend_hash_key *hash_key)
{
	int level;
	TSRMLS_FETCH();

	level = va_arg(args, int);

	if (hash_key->nKeyLength==0) { /* numeric key */
		php_printf("%*c%ld => ", level + 1, ' ', hash_key->h);
	} else { /* string key */
		char *key;
		int key_len;
		key = php_addcslashes(hash_key->arKey, hash_key->nKeyLength - 1, &key_len, 0, "'\\", 2 TSRMLS_CC);
		php_printf("%*c'", level + 1, ' ');
		PHPWRITE(key, key_len);
		php_printf("' => ");
		efree(key);
	}
	php_var_export(zv, level + 2 TSRMLS_CC);
	PUTS (",\n");
	return 0;
}

static int php_object_element_export(zval **zv, int num_args, va_list args, zend_hash_key *hash_key)
{
	int level;
	TSRMLS_FETCH();

	level = va_arg(args, int);

	if (hash_key->nKeyLength != 0) {
		php_printf("%*cvar $%s = ", level + 1, ' ', hash_key->arKey);
		php_var_export(zv, level + 2 TSRMLS_CC);
		PUTS (";\n");
	}
	return 0;
}

PHPAPI void php_var_export(zval **struc, int level TSRMLS_DC)
{
	HashTable *myht;
	char*     tmp_str;
	int       tmp_len;

	switch (Z_TYPE_PP(struc)) {
	case IS_BOOL:
		php_printf("%s", Z_LVAL_PP(struc) ? "true" : "false");
		break;
	case IS_NULL:
		php_printf("NULL");
		break;
	case IS_LONG:
		php_printf("%ld", Z_LVAL_PP(struc));
		break;
	case IS_DOUBLE:
		php_printf("%.*G", (int) EG(precision), Z_DVAL_PP(struc));
		break;
	case IS_STRING:
		tmp_str = php_addcslashes(Z_STRVAL_PP(struc), Z_STRLEN_PP(struc), &tmp_len, 0, "'\\", 2 TSRMLS_CC);
		PUTS ("'");
		PHPWRITE(tmp_str, tmp_len);
		PUTS ("'");
		efree (tmp_str);
		break;
	case IS_ARRAY:
		myht = Z_ARRVAL_PP(struc);
		if (level > 1) {
			php_printf("\n%*c", level - 1, ' ');
		}
		PUTS ("array (\n");
		zend_hash_apply_with_arguments(myht, (apply_func_args_t) php_array_element_export, 1, level);
		if (level > 1) {
			php_printf("%*c", level - 1, ' ');
		}
		PUTS(")");
		break;
	case IS_OBJECT:
		myht = Z_OBJPROP_PP(struc);
		if (level > 1) {
			php_printf("\n%*c", level - 1, ' ');
		}
		php_printf ("class %s {\n", Z_OBJCE_PP(struc)->name);
		if (myht) {
			zend_hash_apply_with_arguments(myht, (apply_func_args_t) php_object_element_export, 1, level);
		}
		if (level > 1) {
			php_printf("%*c", level - 1, ' ');
		}
		PUTS("}");
		break;
	default:
		PUTS ("NULL");
		break;
	}
}

/* }}} */


/* {{{ proto mixed var_export(mixed var [, bool return])
   Outputs or returns a string representation of a variable */
PHP_FUNCTION(var_export)
{
	zval *var;
	zend_bool return_output = 0;
	
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|b", &var, &return_output) == FAILURE) {
		return;
	}
	
	if (return_output) {
		php_start_ob_buffer (NULL, 0, 1 TSRMLS_CC);
	}
	
	php_var_export(&var, 1 TSRMLS_CC);