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operators.c
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/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2000 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) the GNU General Public License as published by the Free Software |
| Foundation; either version 2 of the License, or (at your option) |
| any later version. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id: operators.c,v 1.107 2000/04/10 19:29:36 andi Exp $ */
#include "php.h"
#include "functions/number.h"
#include <stdio.h>
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include "snprintf.h"
#include <errno.h>
static inline int is_numeric_string(char *str, int length, long *lval, double *dval);
void convert_double_to_long(pval *op)
{
if (op->type == IS_DOUBLE) {
op->value.lval = (long) op->value.dval;
op->type = IS_LONG;
}
}
void convert_string_to_number(pval *op)
{
char *strval;
if (op->type == IS_STRING) {
strval = op->value.str.val;
switch ((op->type=is_numeric_string(strval, op->value.str.len, &op->value.lval, &op->value.dval))) {
case IS_DOUBLE:
case IS_LONG:
break;
#if WITH_BCMATH
case IS_BC:
op->type = IS_DOUBLE; /* may have lost significant digits */
break;
#endif
default:
op->value.lval = strtol(op->value.str.val, NULL, 10);
op->type = IS_LONG;
break;
}
STR_FREE(strval);
}
}
PHPAPI void convert_to_long(pval *op)
{
convert_to_long_base(op, 10);
}
PHPAPI void convert_to_long_base(pval *op, int base)
{
char *strval;
long tmp;
TLS_VARS;
switch (op->type) {
case IS_LONG:
return;
case IS_DOUBLE:
op->value.lval = (long) op->value.dval;
op->type = IS_LONG;
break;
case IS_STRING:
strval = op->value.str.val;
op->value.lval = strtol(strval, NULL, base);
op->type = IS_LONG;
STR_FREE(strval);
break;
case IS_ARRAY:
case IS_OBJECT:
tmp = (_php3_hash_num_elements(op->value.ht)?1:0);
pval_destructor(op _INLINE_TLS);
op->value.lval = tmp;
op->type = IS_LONG;
break;
default:
php3_error(E_WARNING, "Cannot convert to ordinal value");
pval_destructor(op _INLINE_TLS);
op->value.lval = 0;
op->type = IS_LONG;
break;
}
op->type = IS_LONG;
}
PHPAPI void convert_to_double(pval *op)
{
char *strval;
double tmp;
TLS_VARS;
switch (op->type) {
case IS_LONG:
op->value.dval = (double) op->value.lval;
op->type = IS_DOUBLE;
break;
case IS_DOUBLE:
break;
case IS_STRING:
strval = op->value.str.val;
op->value.dval = strtod(strval, NULL);
op->type = IS_DOUBLE;
STR_FREE(strval);
break;
case IS_ARRAY:
case IS_OBJECT:
tmp = (_php3_hash_num_elements(op->value.ht)?1:0);
pval_destructor(op _INLINE_TLS);
op->value.dval = tmp;
op->type = IS_DOUBLE;
break;
default:
php3_error(E_WARNING, "Cannot convert to real value");
pval_destructor(op _INLINE_TLS);
op->value.dval = 0;
op->type = IS_DOUBLE;
break;
}
}
PHPAPI void convert_to_boolean_long(pval *op)
{
char *strval;
int tmp;
TLS_VARS;
switch (op->type) {
case IS_LONG:
break;
case IS_DOUBLE:
op->value.lval = (op->value.dval ? 1 : 0);
op->type = IS_LONG;
break;
case IS_STRING:
strval = op->value.str.val;
if (op->value.str.len == 0
|| (op->value.str.len==1 && op->value.str.val[0]=='0')) {
op->value.lval = 0;
} else {
op->value.lval = 1;
}
STR_FREE(strval);
op->type = IS_LONG;
break;
case IS_ARRAY:
case IS_OBJECT:
tmp = (_php3_hash_num_elements(op->value.ht)?1:0);
pval_destructor(op _INLINE_TLS);
op->value.lval = tmp;
op->type = IS_LONG;
break;
default:
pval_destructor(op _INLINE_TLS);
op->value.lval = 0;
op->type = IS_LONG;
break;
}
}
PHPAPI void convert_to_string(pval *op)
{
long lval;
double dval;
TLS_VARS;
switch (op->type) {
case IS_STRING:
break;
case IS_LONG:
lval = op->value.lval;
op->value.str.val = (char *) emalloc(MAX_LENGTH_OF_LONG + 1);
if (!op->value.str.val) {
return;
}
op->value.str.len = _php3_sprintf(op->value.str.val, "%ld", lval); /* SAFE */
op->type = IS_STRING;
break;
case IS_DOUBLE: {
dval = op->value.dval;
op->value.str.val = (char *) emalloc(MAX_LENGTH_OF_DOUBLE + php3_ini.precision + 1);
if (!op->value.str.val) {
return;
}
op->value.str.len = _php3_sprintf(op->value.str.val, "%.*G", (int) php3_ini.precision, dval); /* SAFE */
/* %G already handles removing trailing zeros from the fractional part, yay */
op->type = IS_STRING;
break;
}
case IS_ARRAY:
pval_destructor(op _INLINE_TLS);
op->value.str.val = estrndup("Array",sizeof("Array")-1);
op->value.str.len = sizeof("Array")-1;
op->type = IS_STRING;
break;
case IS_OBJECT:
pval_destructor(op _INLINE_TLS);
op->value.str.val = estrndup("Object",sizeof("Object")-1);
op->value.str.len = sizeof("Object")-1;
op->type = IS_STRING;
break;
default:
pval_destructor(op _INLINE_TLS);
var_reset(op);
break;
}
}
static void convert_scalar_to_array(pval *op,int type)
{
pval tmp = *op;
op->value.ht = (HashTable *) emalloc(sizeof(HashTable));
_php3_hash_init(op->value.ht, 0, NULL, PVAL_DESTRUCTOR, 0);
switch (type) {
case IS_ARRAY:
_php3_hash_index_update(op->value.ht, 0, (void *) &tmp, sizeof(pval), NULL);
op->type = IS_ARRAY;
break;
case IS_OBJECT:
_php3_hash_update(op->value.ht, "scalar", sizeof("scalar"), (void *) &tmp, sizeof(pval), NULL);
op->type = IS_OBJECT;
break;
}
}
PHPAPI void convert_to_array(pval *op)
{
switch(op->type) {
case IS_ARRAY:
return;
break;
case IS_OBJECT:
op->type = IS_ARRAY;
return;
break;
default:
convert_scalar_to_array(op,IS_ARRAY);
break;
}
}
PHPAPI void convert_to_object(pval *op)
{
switch(op->type) {
case IS_ARRAY:
op->type = IS_OBJECT;
return;
break;
case IS_OBJECT:
return;
break;
default:
convert_scalar_to_array(op,IS_OBJECT);
op->type = IS_OBJECT;
break;
}
}
int add_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type == IS_ARRAY && op2->type == IS_ARRAY) {
pval tmp;
_php3_hash_merge(op1->value.ht,op2->value.ht,(void (*)(void *pData)) pval_copy_constructor, (void *) &tmp, sizeof(pval));
*result = *op1;
pval_destructor(op2 _INLINE_TLS);
return SUCCESS;
}
if (php3_ini.warn_plus_overloading) {
if ((op1->type == IS_STRING && !is_numeric_string(op1->value.str.val, op1->value.str.len, NULL, NULL))
|| (op2->type == IS_STRING && !is_numeric_string(op2->value.str.val, op2->value.str.len, NULL, NULL))) {
php3_error(E_NOTICE,"Using plus operator on string operands");
}
}
convert_string_to_number(op1);
convert_string_to_number(op2);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
double dval = (double) op1->value.lval + (double) op2->value.lval;
if (dval > (double) LONG_MAX) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval + op2->value.lval;
result->type = IS_LONG;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->type = IS_DOUBLE;
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) + op2->value.dval) :
(op1->value.dval + ((double) op2->value.lval)));
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval + op2->value.dval;
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE; /* unknown datatype */
}
int sub_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_string_to_number(op1);
convert_string_to_number(op2);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
double dval = (double) op1->value.lval - (double) op2->value.lval;
if (dval < (double) LONG_MIN) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval - op2->value.lval;
result->type = IS_LONG;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->type = IS_DOUBLE;
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) - op2->value.dval) :
(op1->value.dval - ((double) op2->value.lval)));
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval - op2->value.dval;
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE; /* unknown datatype */
}
int mul_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_string_to_number(op1);
convert_string_to_number(op2);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
double dval = (double) op1->value.lval * (double) op2->value.lval;
if (dval > (double) LONG_MAX) {
result->value.dval = dval;
result->type = IS_DOUBLE;
} else {
result->value.lval = op1->value.lval * op2->value.lval;
result->type = IS_LONG;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->type = IS_DOUBLE;
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) * op2->value.dval) :
(op1->value.dval * ((double) op2->value.lval)));
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval * op2->value.dval;
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE; /* unknown datatype */
}
int div_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_string_to_number(op1);
convert_string_to_number(op2);
if ((op2->type == IS_LONG && op2->value.lval == 0) || (op2->type == IS_DOUBLE && op2->value.dval == 0.0)) {
php3_error(E_WARNING, "Division by zero");
var_reset(result);
return FAILURE; /* division by zero */
}
if (op1->type == IS_LONG && op2->type == IS_LONG) {
if (op1->value.lval % op2->value.lval == 0) { /* integer */
result->type = IS_LONG;
result->value.lval = op1->value.lval / op2->value.lval;
} else {
result->type = IS_DOUBLE;
result->value.dval = ((double) op1->value.lval) / op2->value.lval;
}
return SUCCESS;
}
if ((op1->type == IS_DOUBLE && op2->type == IS_LONG)
|| (op1->type == IS_LONG && op2->type == IS_DOUBLE)) {
result->type = IS_DOUBLE;
result->value.dval = (op1->type == IS_LONG ?
(((double) op1->value.lval) / op2->value.dval) :
(op1->value.dval / ((double) op2->value.lval)));
return SUCCESS;
}
if (op1->type == IS_DOUBLE && op2->type == IS_DOUBLE) {
result->type = IS_DOUBLE;
result->value.dval = op1->value.dval / op2->value.dval;
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE; /* unknown datatype */
}
int mod_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_to_long(op1);
convert_to_long(op2);
if (op2->value.lval == 0) {
var_reset(result);
return FAILURE; /* modulus by zero */
}
result->type = IS_LONG;
result->value.lval = op1->value.lval % op2->value.lval;
return SUCCESS;
}
int boolean_or_function(pval *result, pval *op1, pval *op2)
{
result->type = IS_LONG;
convert_to_boolean_long(op1);
if (op1->type == IS_LONG && op1->value.lval) {
result->value.lval = 1;
return SUCCESS;
}
convert_to_boolean_long(op2);
if (op2->type == IS_LONG && op2->value.lval) {
result->value.lval = 1;
return SUCCESS;
}
if (op1->type == IS_LONG && op2->type == IS_LONG) {
result->value.lval = 0;
return SUCCESS;
}
/* some error converting the variables */
var_reset(result);
return FAILURE;
}
int boolean_and_function(pval *result, pval *op1, pval *op2)
{
result->type = IS_LONG;
convert_to_boolean_long(op1);
if (op1->type == IS_LONG && !op1->value.lval) {
result->value.lval = 0;
return SUCCESS;
}
convert_to_boolean_long(op2);
if (op2->type == IS_LONG && !op2->value.lval) {
result->value.lval = 0;
return SUCCESS;
}
if (op1->type == IS_LONG && op2->type == IS_LONG) {
result->value.lval = 1;
return SUCCESS;
}
/* some error converting the variables */
var_reset(result);
return FAILURE;
}
int boolean_xor_function(pval *result, pval *op1, pval *op2)
{
result->type = IS_LONG;
convert_to_boolean_long(op1);
convert_to_boolean_long(op2);
result->value.lval = op1->value.lval ^ op2->value.lval;
return SUCCESS;
}
int boolean_not_function(pval *result, pval *op1)
{
convert_to_boolean_long(op1);
if (op1->type == IS_LONG) {
result->type = IS_LONG;
result->value.lval = !op1->value.lval;
return SUCCESS;
}
var_reset(result);
return FAILURE; /* unknown datatype */
}
int bitwise_not_function(pval *result, pval *op1 INLINE_TLS)
{
if (op1->type == IS_DOUBLE) {
op1->value.lval = (long) op1->value.dval;
op1->type = IS_LONG;
}
if (op1->type == IS_LONG) {
result->value.lval = ~op1->value.lval;
result->type = IS_LONG;
return SUCCESS;
}
if (op1->type == IS_STRING) {
int i;
result->type = IS_STRING;
result->value.str.val = op1->value.str.val;
result->value.str.len = op1->value.str.len;
for (i = 0; i < op1->value.str.len; i++) {
result->value.str.val[i] = ~op1->value.str.val[i];
}
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
var_reset(result);
return FAILURE; /* unknown datatype */
}
int bitwise_or_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type == IS_STRING && op2->type == IS_STRING) {
pval *longer, *shorter;
int i;
if (op1->value.str.len >= op2->value.str.len) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
result->value.str.len = longer->value.str.len;
result->value.str.val = longer->value.str.val;
for (i = 0; i < shorter->value.str.len; i++) {
result->value.str.val[i] |= shorter->value.str.val[i];
}
STR_FREE(shorter->value.str.val);
return SUCCESS;
}
convert_to_long(op1);
convert_to_long(op2);
result->type = IS_LONG;
result->value.lval = op1->value.lval | op2->value.lval;
return SUCCESS;
}
int bitwise_and_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type == IS_STRING && op2->type == IS_STRING) {
pval *longer, *shorter;
int i;
if (op1->value.str.len >= op2->value.str.len) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
result->value.str.len = shorter->value.str.len;
result->value.str.val = shorter->value.str.val;
for (i = 0; i < shorter->value.str.len; i++) {
result->value.str.val[i] &= longer->value.str.val[i];
}
STR_FREE(longer->value.str.val);
return SUCCESS;
}
convert_to_long(op1);
convert_to_long(op2);
result->type = IS_LONG;
result->value.lval = op1->value.lval & op2->value.lval;
return SUCCESS;
}
int bitwise_xor_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type == IS_STRING && op2->type == IS_STRING) {
pval *longer, *shorter;
int i;
if (op1->value.str.len >= op2->value.str.len) {
longer = op1;
shorter = op2;
} else {
longer = op2;
shorter = op1;
}
result->value.str.len = shorter->value.str.len;
result->value.str.val = shorter->value.str.val;
for (i = 0; i < shorter->value.str.len; i++) {
result->value.str.val[i] ^= longer->value.str.val[i];
}
STR_FREE(longer->value.str.val);
return SUCCESS;
}
convert_to_long(op1);
convert_to_long(op2);
result->type = IS_LONG;
result->value.lval = op1->value.lval ^ op2->value.lval;
return SUCCESS;
}
int shift_left_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_to_long(op1);
convert_to_long(op2);
result->value.lval = op1->value.lval << op2->value.lval;
result->type = IS_LONG;
return SUCCESS;
}
int shift_right_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
convert_to_long(op1);
convert_to_long(op2);
result->value.lval = op1->value.lval >> op2->value.lval;
result->type = IS_LONG;
return SUCCESS;
}
int add_char_to_string(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type != IS_STRING) {
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE;
}
result->value.str.len = op1->value.str.len + 1;
result->value.str.val = (char *) emalloc(result->value.str.len + 1);
memcpy(result->value.str.val, op1->value.str.val, op1->value.str.len);
result->value.str.val[result->value.str.len - 1] = op2->value.chval;
result->value.str.val[result->value.str.len] = 0;
result->type = IS_STRING;
STR_FREE(op1->value.str.val);
return SUCCESS;
}
int concat_function(pval *result, pval *op1, pval *op2, int free_op2 INLINE_TLS)
{
convert_to_string(op1);
convert_to_string(op2);
if (op1->type == IS_STRING && op2->type == IS_STRING) {
result->value.str.len = op1->value.str.len + op2->value.str.len;
if (op1->value.str.len == 0) { /* Takes care of empty_string etc. cases where we can't erealloc() */
result->value.str.val = (char *) emalloc(result->value.str.len + 1);
STR_FREE(op1->value.str.val);
} else {
result->value.str.val = (char *) erealloc(op1->value.str.val, result->value.str.len + 1);
}
memcpy(result->value.str.val+op1->value.str.len, op2->value.str.val,op2->value.str.len);
result->value.str.val[result->value.str.len] = 0;
result->type = IS_STRING;
if (free_op2) {
STR_FREE(op2->value.str.val);
}
return SUCCESS;
}
pval_destructor(op1 _INLINE_TLS);
if (free_op2) {
pval_destructor(op2 _INLINE_TLS);
}
var_reset(result);
return FAILURE; /* unknown datatype */
}
int concat_function_with_free(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
return concat_function(result,op1,op2,1 _INLINE_TLS);
}
int compare_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (op1->type == IS_STRING && op2->type == IS_STRING) {
php3_smart_strcmp(result,op1,op2);
return SUCCESS;
}
convert_string_to_number(op1);
convert_string_to_number(op2);
if (op1->type == IS_LONG && op2->type == IS_LONG) {
result->type = IS_LONG;
result->value.lval = op1->value.lval - op2->value.lval;
return SUCCESS;
}
if ((op1->type == IS_DOUBLE || op1->type == IS_LONG)
&& (op2->type == IS_DOUBLE || op2->type == IS_LONG)) {
result->type = IS_DOUBLE;
result->value.dval = (op1->type == IS_LONG ? (double) op1->value.lval : op1->value.dval) - (op2->type == IS_LONG ? (double) op2->value.lval : op2->value.dval);
return SUCCESS;
}
if ((op1->type & IS_HASH) && (op2->type & IS_HASH)) {
php3_error(E_WARNING,"Cannot compare arrays or objects");
}
pval_destructor(op1 _INLINE_TLS);
pval_destructor(op2 _INLINE_TLS);
var_reset(result);
return FAILURE;
}
int is_equal_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
convert_to_boolean_long(result);
if (result->type == IS_LONG) {
if (result->value.lval == 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
int is_not_equal_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
convert_to_boolean_long(result);
if (result->type == IS_LONG) {
if (result->value.lval) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
int is_smaller_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
if (result->type == IS_LONG) {
if (result->value.lval < 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_LONG;
if (result->value.dval < 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
int is_smaller_or_equal_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
if (result->type == IS_LONG) {
if (result->value.lval <= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_LONG;
if (result->value.dval <= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
int is_greater_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
if (result->type == IS_LONG) {
if (result->value.lval > 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_LONG;
if (result->value.dval > 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
int is_greater_or_equal_function(pval *result, pval *op1, pval *op2 INLINE_TLS)
{
if (compare_function(result, op1, op2 _INLINE_TLS) == FAILURE) {
return FAILURE;
}
if (result->type == IS_LONG) {
if (result->value.lval >= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
if (result->type == IS_DOUBLE) {
result->type = IS_LONG;
if (result->value.dval >= 0) {
result->value.lval = 1;
} else {
result->value.lval = 0;
}
return SUCCESS;
}
var_reset(result);
return FAILURE;
}
#define LOWER_CASE 1
#define UPPER_CASE 2
#define NUMERIC 3
static void increment_string(pval *str)
{
int carry=0;
int pos=str->value.str.len-1;
char *s=str->value.str.val;
char *t;
int last=0; /* Shut up the compiler warning */
int ch;
while(pos >= 0) {
ch = s[pos];
if (ch >= 'a' && ch <= 'z') {
if (ch == 'z') {
s[pos] = 'a';
carry=1;
} else {
s[pos]++;
carry=0;
}
last=LOWER_CASE;
} else if (ch >= 'A' && ch <= 'Z') {
if (ch == 'Z') {
s[pos] = 'A';
carry=1;
} else {
s[pos]++;
carry=0;
}
last=UPPER_CASE;
} else if (ch >= '0' && ch <= '9') {
if (ch == '9') {
s[pos] = '0';
carry=1;
} else {
s[pos]++;
carry=0;
}
last = NUMERIC;
} else {
carry=0;
break;
}
if (carry == 0) {
break;
}
pos--;
}
if (carry) {
t = (char *) emalloc(str->value.str.len+1+1);
memcpy(t+1,str->value.str.val, str->value.str.len);
str->value.str.len++;
t[str->value.str.len] = '\0';
switch (last) {
case NUMERIC:
t[0] = '1';
break;
case UPPER_CASE:
t[0] = 'A';
break;
case LOWER_CASE:
t[0] = 'a';
break;
}
STR_FREE(str->value.str.val);
str->value.str.val = t;
}
}