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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
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