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