mirror of
https://github.com/php/php-src.git
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278 lines
7.9 KiB
C
278 lines
7.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2003 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "zend.h"
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#include "zend_constants.h"
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#include "zend_variables.h"
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#include "zend_operators.h"
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#include "zend_globals.h"
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void free_zend_constant(zend_constant *c)
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{
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if (!(c->flags & CONST_PERSISTENT)) {
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zval_dtor(&c->value);
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}
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free(c->name);
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}
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void copy_zend_constant(zend_constant *c)
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{
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c->name = zend_strndup(c->name, c->name_len);
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if (!(c->flags & CONST_PERSISTENT)) {
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zval_copy_ctor(&c->value);
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}
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}
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void zend_copy_constants(HashTable *target, HashTable *source)
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{
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zend_constant tmp_constant;
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zend_hash_copy(target, source, (copy_ctor_func_t) copy_zend_constant, &tmp_constant, sizeof(zend_constant));
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}
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static int clean_non_persistent_constant(zend_constant *c TSRMLS_DC)
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{
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if (c->flags & CONST_PERSISTENT) {
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return EG(full_tables_cleanup) ? 0 : ZEND_HASH_APPLY_STOP;
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} else {
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return EG(full_tables_cleanup) ? 1 : ZEND_HASH_APPLY_REMOVE;
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}
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}
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static int clean_module_constant(zend_constant *c, int *module_number TSRMLS_DC)
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{
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if (c->module_number == *module_number) {
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return 1;
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} else {
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return 0;
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}
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}
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void clean_module_constants(int module_number TSRMLS_DC)
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{
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zend_hash_apply_with_argument(EG(zend_constants), (apply_func_arg_t) clean_module_constant, (void *) &module_number TSRMLS_CC);
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}
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int zend_startup_constants(TSRMLS_D)
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{
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EG(zend_constants) = (HashTable *) malloc(sizeof(HashTable));
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if (zend_hash_init(EG(zend_constants), 20, NULL, ZEND_CONSTANT_DTOR, 1)==FAILURE) {
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return FAILURE;
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}
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return SUCCESS;
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}
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void zend_register_standard_constants(TSRMLS_D)
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{
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REGISTER_MAIN_LONG_CONSTANT("E_ERROR", E_ERROR, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_WARNING", E_WARNING, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_PARSE", E_PARSE, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_NOTICE", E_NOTICE, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_CORE_ERROR", E_CORE_ERROR, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_CORE_WARNING", E_CORE_WARNING, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_ERROR", E_COMPILE_ERROR, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_WARNING", E_COMPILE_WARNING, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_USER_ERROR", E_USER_ERROR, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_USER_WARNING", E_USER_WARNING, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_USER_NOTICE", E_USER_NOTICE, CONST_PERSISTENT | CONST_CS);
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REGISTER_MAIN_LONG_CONSTANT("E_ALL", E_ALL, CONST_PERSISTENT | CONST_CS);
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/* true/false constants */
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{
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zend_constant c;
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c.value.type = IS_BOOL;
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c.flags = CONST_PERSISTENT;
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c.module_number = 0;
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c.name = zend_strndup(ZEND_STRS("TRUE"));
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c.name_len = sizeof("TRUE");
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c.value.value.lval = 1;
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c.value.type = IS_BOOL;
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zend_register_constant(&c TSRMLS_CC);
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c.name = zend_strndup(ZEND_STRS("FALSE"));
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c.name_len = sizeof("FALSE");
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c.value.value.lval = 0;
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c.value.type = IS_BOOL;
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zend_register_constant(&c TSRMLS_CC);
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c.name = zend_strndup(ZEND_STRS("ZEND_THREAD_SAFE"));
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c.name_len = sizeof("ZEND_THREAD_SAFE");
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c.value.value.lval = ZTS_V;
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c.value.type = IS_BOOL;
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zend_register_constant(&c TSRMLS_CC);
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c.name = zend_strndup(ZEND_STRS("NULL"));
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c.name_len = sizeof("NULL");
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c.value.type = IS_NULL;
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zend_register_constant(&c TSRMLS_CC);
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}
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}
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int zend_shutdown_constants(TSRMLS_D)
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{
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zend_hash_destroy(EG(zend_constants));
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free(EG(zend_constants));
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return SUCCESS;
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}
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void clean_non_persistent_constants(TSRMLS_D)
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{
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if (EG(full_tables_cleanup)) {
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zend_hash_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant TSRMLS_CC);
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} else {
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zend_hash_reverse_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant TSRMLS_CC);
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}
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}
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ZEND_API void zend_register_long_constant(char *name, uint name_len, long lval, int flags, int module_number TSRMLS_DC)
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{
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zend_constant c;
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c.value.type = IS_LONG;
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c.value.value.lval = lval;
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c.flags = flags;
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c.name = zend_strndup(name, name_len);
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c.name_len = name_len;
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c.module_number = module_number;
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zend_register_constant(&c TSRMLS_CC);
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}
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ZEND_API void zend_register_double_constant(char *name, uint name_len, double dval, int flags, int module_number TSRMLS_DC)
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{
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zend_constant c;
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c.value.type = IS_DOUBLE;
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c.value.value.dval = dval;
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c.flags = flags;
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c.name = zend_strndup(name, name_len);
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c.name_len = name_len;
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c.module_number = module_number;
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zend_register_constant(&c TSRMLS_CC);
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}
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ZEND_API void zend_register_stringl_constant(char *name, uint name_len, char *strval, uint strlen, int flags, int module_number TSRMLS_DC)
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{
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zend_constant c;
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c.value.type = IS_STRING;
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c.value.value.str.val = strval;
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c.value.value.str.len = strlen;
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c.flags = flags;
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c.name = zend_strndup(name, name_len);
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c.name_len = name_len;
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c.module_number = module_number;
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zend_register_constant(&c TSRMLS_CC);
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}
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ZEND_API void zend_register_string_constant(char *name, uint name_len, char *strval, int flags, int module_number TSRMLS_DC)
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{
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zend_register_stringl_constant(name, name_len, strval, strlen(strval), flags, module_number TSRMLS_CC);
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}
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ZEND_API int zend_get_constant(char *name, uint name_len, zval *result TSRMLS_DC)
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{
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zend_constant *c;
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char *lookup_name;
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int retval = 1;
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if (zend_hash_find(EG(zend_constants), name, name_len+1, (void **) &c) == FAILURE) {
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lookup_name = do_alloca(name_len+1);
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zend_str_tolower_copy(lookup_name, name, name_len);
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if (zend_hash_find(EG(zend_constants), lookup_name, name_len+1, (void **) &c)==SUCCESS) {
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if ((c->flags & CONST_CS) && memcmp(c->name, name, name_len)!=0) {
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retval=0;
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}
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} else {
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retval=0;
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}
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free_alloca(lookup_name);
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}
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if (retval) {
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*result = c->value;
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zval_copy_ctor(result);
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}
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return retval;
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}
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ZEND_API int zend_register_constant(zend_constant *c TSRMLS_DC)
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{
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char *lowercase_name;
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int ret = SUCCESS;
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#if 0
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printf("Registering constant for module %d\n", c->module_number);
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#endif
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if (!(c->flags & CONST_CS)) {
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/* keep in mind that c->name_len already contains the '\0' */
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lowercase_name = do_alloca(c->name_len);
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zend_str_tolower_copy(lowercase_name, c->name, c->name_len - 1);
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} else {
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lowercase_name = do_alloca(c->name_len + 1);
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memcpy(lowercase_name, c->name, c->name_len);
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lowercase_name[c->name_len] = '\0';
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}
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if (zend_hash_add(EG(zend_constants), lowercase_name, c->name_len, (void *) c, sizeof(zend_constant), NULL)==FAILURE) {
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free(c->name);
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if (!(c->flags & CONST_PERSISTENT)) {
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zval_dtor(&c->value);
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}
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zend_error(E_NOTICE,"Constant %s already defined", lowercase_name);
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ret = FAILURE;
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}
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free_alloca(lowercase_name);
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return ret;
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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*/
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