1 /* 2 +----------------------------------------------------------------------+ 3 | PHP Version 7 | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) 2006-2018 The PHP Group | 6 +----------------------------------------------------------------------+ 7 | This source file is subject to version 3.01 of the PHP license, | 8 | that is bundled with this package in the file LICENSE, and is | 9 | available through the world-wide-web at the following url: | 10 | http://www.php.net/license/3_01.txt | 11 | If you did not receive a copy of the PHP license and are unable to | 12 | obtain it through the world-wide-web, please send a note to | 13 | license@php.net so we can mail you a copy immediately. | 14 +----------------------------------------------------------------------+ 15 | Authors: Andrey Hristov <andrey@php.net> | 16 | Ulf Wendel <uw@php.net> | 17 +----------------------------------------------------------------------+ 18 */ 19 20 #include "php.h" 21 #include "mysqlnd.h" 22 #include "mysqlnd_debug.h" 23 #include "mysqlnd_read_buffer.h" 24 25 26 /* {{{ mysqlnd_read_buffer_is_empty */ 27 static zend_bool mysqlnd_read_buffer_is_empty(const MYSQLND_READ_BUFFER * const buffer)28mysqlnd_read_buffer_is_empty(const MYSQLND_READ_BUFFER * const buffer) 29 { 30 return buffer->len? FALSE:TRUE; 31 } 32 /* }}} */ 33 34 35 /* {{{ mysqlnd_read_buffer_read */ 36 static void mysqlnd_read_buffer_read(MYSQLND_READ_BUFFER * buffer,const size_t count,zend_uchar * dest)37mysqlnd_read_buffer_read(MYSQLND_READ_BUFFER * buffer, const size_t count, zend_uchar * dest) 38 { 39 if (buffer->len >= count) { 40 memcpy(dest, buffer->data + buffer->offset, count); 41 buffer->offset += count; 42 buffer->len -= count; 43 } 44 } 45 /* }}} */ 46 47 48 /* {{{ mysqlnd_read_buffer_bytes_left */ 49 static size_t mysqlnd_read_buffer_bytes_left(const MYSQLND_READ_BUFFER * const buffer)50mysqlnd_read_buffer_bytes_left(const MYSQLND_READ_BUFFER * const buffer) 51 { 52 return buffer->len; 53 } 54 /* }}} */ 55 56 57 /* {{{ mysqlnd_read_buffer_free */ 58 static void mysqlnd_read_buffer_free(MYSQLND_READ_BUFFER ** buffer)59mysqlnd_read_buffer_free(MYSQLND_READ_BUFFER ** buffer) 60 { 61 DBG_ENTER("mysqlnd_read_buffer_free"); 62 if (*buffer) { 63 mnd_efree((*buffer)->data); 64 mnd_efree(*buffer); 65 *buffer = NULL; 66 } 67 DBG_VOID_RETURN; 68 } 69 /* }}} */ 70 71 72 /* {{{ mysqlnd_create_read_buffer */ 73 PHPAPI MYSQLND_READ_BUFFER * mysqlnd_create_read_buffer(const size_t count)74mysqlnd_create_read_buffer(const size_t count) 75 { 76 MYSQLND_READ_BUFFER * ret = mnd_emalloc(sizeof(MYSQLND_READ_BUFFER)); 77 DBG_ENTER("mysqlnd_create_read_buffer"); 78 ret->is_empty = mysqlnd_read_buffer_is_empty; 79 ret->read = mysqlnd_read_buffer_read; 80 ret->bytes_left = mysqlnd_read_buffer_bytes_left; 81 ret->free_buffer = mysqlnd_read_buffer_free; 82 ret->data = mnd_emalloc(count); 83 ret->size = ret->len = count; 84 ret->offset = 0; 85 DBG_RETURN(ret); 86 } 87 /* }}} */ 88 89 /* 90 * Local variables: 91 * tab-width: 4 92 * c-basic-offset: 4 93 * End: 94 * vim600: noet sw=4 ts=4 fdm=marker 95 * vim<600: noet sw=4 ts=4 96 */ 97
