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Diffstat (limited to 'Zend/zend_smart_string.h')
| -rw-r--r-- | Zend/zend_smart_string.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/Zend/zend_smart_string.h b/Zend/zend_smart_string.h new file mode 100644 index 0000000000..0ad7c18a51 --- /dev/null +++ b/Zend/zend_smart_string.h @@ -0,0 +1,149 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 7 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2018 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> | + | Xinchen Hui <laruence@php.net> | + +----------------------------------------------------------------------+ + */ + +/* $Id$ */ + +#ifndef PHP_SMART_STRING_H +#define PHP_SMART_STRING_H + +#include "zend_smart_string_public.h" + +#include <stdlib.h> +#ifndef SMART_STR_USE_REALLOC +#include <zend.h> +#endif + +#ifndef SMART_STRING_PREALLOC +#define SMART_STRING_PREALLOC 128 +#endif + +#ifndef SMART_STRING_START_SIZE +#define SMART_STRING_START_SIZE 78 +#endif + +#ifdef SMART_STRING_USE_REALLOC +#define SMART_STRING_REALLOC(a,b,c) realloc((a),(b)) +#else +#define SMART_STRING_REALLOC(a,b,c) perealloc((a),(b),(c)) +#endif + +#define SMART_STRING_DO_REALLOC(d, what) \ + (d)->c = (char *) SMART_STRING_REALLOC((d)->c, (d)->a + 1, (what)) + +/* wrapper */ + +#define smart_string_appends_ex(str, src, what) \ + smart_string_appendl_ex((str), (src), strlen(src), (what)) +#define smart_string_appends(str, src) \ + smart_string_appendl((str), (src), strlen(src)) +#define smart_string_append_ex(str, src, what) \ + smart_string_appendl_ex((str), ((smart_string *)(src))->c, \ + ((smart_string *)(src))->len, (what)); +#define smart_string_sets(str, src) \ + smart_string_setl((str), (src), strlen(src)); + +#define smart_string_appendc(str, c) \ + smart_string_appendc_ex((str), (c), 0) +#define smart_string_free(s) \ + smart_string_free_ex((s), 0) +#define smart_string_appendl(str, src, len) \ + smart_string_appendl_ex((str), (src), (len), 0) +#define smart_string_append(str, src) \ + smart_string_append_ex((str), (src), 0) +#define smart_string_append_long(str, val) \ + smart_string_append_long_ex((str), (val), 0) +#define smart_string_append_unsigned(str, val) \ + smart_string_append_unsigned_ex((str), (val), 0) + +static zend_always_inline size_t smart_string_alloc(smart_string *str, size_t len, zend_bool persistent) { + if (!str->c) { + str->len = 0; + str->a = len < SMART_STRING_START_SIZE + ? SMART_STRING_START_SIZE + : len + SMART_STRING_PREALLOC; + SMART_STRING_DO_REALLOC(str, persistent); + return len; + } else { + if (UNEXPECTED((size_t) len > SIZE_MAX - str->len)) { + zend_error(E_ERROR, "String size overflow"); + } + len += str->len; + if (UNEXPECTED(len >= str->a)) { + str->a = len + SMART_STRING_PREALLOC; + SMART_STRING_DO_REALLOC(str, persistent); + } + } + return len; +} + +static zend_always_inline void smart_string_free_ex(smart_string *str, zend_bool persistent) { + if (str->c) { + pefree(str->c, persistent); + str->c = NULL; + } + str->a = str->len = 0; +} + +static zend_always_inline void smart_string_0(smart_string *str) { + if (str->c) { + str->c[str->len] = '\0'; + } +} + +static zend_always_inline void smart_string_appendc_ex(smart_string *dest, char ch, zend_bool persistent) { + dest->len = smart_string_alloc(dest, 1, persistent); + dest->c[dest->len - 1] = ch; +} + +static zend_always_inline void smart_string_appendl_ex(smart_string *dest, const char *str, size_t len, zend_bool persistent) { + size_t new_len = smart_string_alloc(dest, len, persistent); + memcpy(dest->c + dest->len, str, len); + dest->len = new_len; + +} + +static zend_always_inline void smart_string_append_long_ex(smart_string *dest, zend_long num, zend_bool persistent) { + char buf[32]; + char *result = zend_print_long_to_buf(buf + sizeof(buf) - 1, num); + smart_string_appendl_ex(dest, result, buf + sizeof(buf) - 1 - result, persistent); +} + +static zend_always_inline void smart_string_append_unsigned_ex(smart_string *dest, zend_ulong num, zend_bool persistent) { + char buf[32]; + char *result = zend_print_ulong_to_buf(buf + sizeof(buf) - 1, num); + smart_string_appendl_ex(dest, result, buf + sizeof(buf) - 1 - result, persistent); +} + +static zend_always_inline void smart_string_setl(smart_string *dest, char *src, size_t len) { + dest->len = len; + dest->a = len + 1; + dest->c = src; +} + +#endif + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * vim600: sw=4 ts=4 fdm=marker + * vim<600: sw=4 ts=4 + */ |