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php_smart_str.h
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php_smart_str.h
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 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: Sascha Schumann <sascha@schumann.cx> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef PHP_SMART_STR_H
#define PHP_SMART_STR_H
#include "php_smart_str_public.h"
#include <stdlib.h>
#ifndef SMART_STR_USE_REALLOC
#include <zend.h>
#endif
#define smart_str_0(x) do { \
if ((x)->c) { \
(x)->c[(x)->len] = '\0'; \
} \
} while (0)
#ifndef SMART_STR_PREALLOC
#define SMART_STR_PREALLOC 128
#endif
#ifndef SMART_STR_START_SIZE
#define SMART_STR_START_SIZE 78
#endif
#ifdef SMART_STR_USE_REALLOC
#define SMART_STR_REALLOC(a,b,c) realloc((a),(b))
#else
#define SMART_STR_REALLOC(a,b,c) perealloc((a),(b),(c))
#endif
#define SMART_STR_DO_REALLOC(d, what) \
(d)->c = SMART_STR_REALLOC((d)->c, (d)->a + 1, (what))
#define smart_str_alloc4(d, n, what, newlen) do { \
if (!(d)->c) { \
(d)->len = 0; \
newlen = (n); \
(d)->a = newlen < SMART_STR_START_SIZE \
? SMART_STR_START_SIZE \
: (newlen >= (INT_MAX - SMART_STR_PREALLOC)? newlen \
: (newlen + SMART_STR_PREALLOC)); \
SMART_STR_DO_REALLOC(d, what); \
} else { \
newlen = (d)->len + (n); \
if (newlen >= (d)->a) { \
(d)->a = newlen + SMART_STR_PREALLOC; \
if (UNEXPECTED((d)->a >= INT_MAX)) { \
zend_error(E_ERROR, "String size overflow"); \
} \
SMART_STR_DO_REALLOC(d, what); \
} \
} \
} while (0)
#define smart_str_alloc(d, n, what) \
smart_str_alloc4((d), (n), (what), newlen)
/* wrapper */
#define smart_str_appends_ex(dest, src, what) \
smart_str_appendl_ex((dest), (src), strlen(src), (what))
#define smart_str_appends(dest, src) \
smart_str_appendl((dest), (src), strlen(src))
#define smart_str_appendc(dest, c) \
smart_str_appendc_ex((dest), (c), 0)
#define smart_str_free(s) \
smart_str_free_ex((s), 0)
#define smart_str_appendl(dest, src, len) \
smart_str_appendl_ex((dest), (src), (len), 0)
#define smart_str_append(dest, src) \
smart_str_append_ex((dest), (src), 0)
#define smart_str_append_long(dest, val) \
smart_str_append_long_ex((dest), (val), 0)
#define smart_str_append_off_t(dest, val) \
smart_str_append_off_t_ex((dest), (val), 0)
#define smart_str_append_unsigned(dest, val) \
smart_str_append_unsigned_ex((dest), (val), 0)
#define smart_str_appendc_ex(dest, ch, what) do { \
register size_t __nl; \
smart_str_alloc4((dest), 1, (what), __nl); \
(dest)->len = __nl; \
((unsigned char *) (dest)->c)[(dest)->len - 1] = (ch); \
} while (0)
#define smart_str_free_ex(s, what) do { \
smart_str *__s = (smart_str *) (s); \
if (__s->c) { \
pefree(__s->c, what); \
__s->c = NULL; \
} \
__s->a = __s->len = 0; \
} while (0)
#define smart_str_appendl_ex(dest, src, nlen, what) do { \
register size_t __nl; \
smart_str *__dest = (smart_str *) (dest); \
\
smart_str_alloc4(__dest, (nlen), (what), __nl); \
memcpy(__dest->c + __dest->len, (src), (nlen)); \
__dest->len = __nl; \
} while (0)
/* input: buf points to the END of the buffer */
#define smart_str_print_unsigned4(buf, num, vartype, result) do { \
char *__p = (buf); \
vartype __num = (num); \
*__p = '\0'; \
do { \
*--__p = (char) (__num % 10) + '0'; \
__num /= 10; \
} while (__num > 0); \
result = __p; \
} while (0)
/* buf points to the END of the buffer */
#define smart_str_print_long4(buf, num, vartype, result) do { \
if (num < 0) { \
/* this might cause problems when dealing with LONG_MIN \
and machines which don't support long long. Works \
flawlessly on 32bit x86 */ \
smart_str_print_unsigned4((buf), -(num), vartype, (result)); \
*--(result) = '-'; \
} else { \
smart_str_print_unsigned4((buf), (num), vartype, (result)); \
} \
} while (0)
/*
* these could be replaced using a braced-group inside an expression
* for GCC compatible compilers, e.g.
*
* #define f(..) ({char *r;..;__r;})
*/
static inline char *smart_str_print_long(char *buf, long num) {
char *r;
smart_str_print_long4(buf, num, unsigned long, r);
return r;
}
static inline char *smart_str_print_unsigned(char *buf, long num) {
char *r;
smart_str_print_unsigned4(buf, num, unsigned long, r);
return r;
}
#define smart_str_append_generic_ex(dest, num, type, vartype, func) do { \
char __b[32]; \
char *__t; \
smart_str_print##func##4 (__b + sizeof(__b) - 1, (num), vartype, __t); \
smart_str_appendl_ex((dest), __t, __b + sizeof(__b) - 1 - __t, (type)); \
} while (0)
#define smart_str_append_unsigned_ex(dest, num, type) \
smart_str_append_generic_ex((dest), (num), (type), unsigned long, _unsigned)
#define smart_str_append_long_ex(dest, num, type) \
smart_str_append_generic_ex((dest), (num), (type), unsigned long, _long)
#define smart_str_append_off_t_ex(dest, num, type) \
smart_str_append_generic_ex((dest), (num), (type), off_t, _long)
#define smart_str_append_ex(dest, src, what) \
smart_str_appendl_ex((dest), ((smart_str *)(src))->c, \
((smart_str *)(src))->len, (what));
#define smart_str_setl(dest, src, nlen) do { \
(dest)->len = (nlen); \
(dest)->a = (nlen) + 1; \
(dest)->c = (char *) (src); \
} while (0)
#define smart_str_sets(dest, src) \
smart_str_setl((dest), (src), strlen(src));
#endif