diff options
Diffstat (limited to 'external/unbound/sldns/sbuffer.c')
-rw-r--r-- | external/unbound/sldns/sbuffer.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/external/unbound/sldns/sbuffer.c b/external/unbound/sldns/sbuffer.c deleted file mode 100644 index a04b9b655..000000000 --- a/external/unbound/sldns/sbuffer.c +++ /dev/null @@ -1,191 +0,0 @@ -/* - * buffer.c -- generic memory buffer . - * - * Copyright (c) 2001-2008, NLnet Labs. All rights reserved. - * - * See LICENSE for the license. - * - */ -/** - * \file - * - * This file contains the definition of sldns_buffer, and functions to manipulate those. - */ -#include "config.h" -#include "sldns/sbuffer.h" -#include <stdarg.h> - -sldns_buffer * -sldns_buffer_new(size_t capacity) -{ - sldns_buffer *buffer = (sldns_buffer*)malloc(sizeof(sldns_buffer)); - - if (!buffer) { - return NULL; - } - - buffer->_data = (uint8_t *) malloc(capacity); - if (!buffer->_data) { - free(buffer); - return NULL; - } - - buffer->_position = 0; - buffer->_limit = buffer->_capacity = capacity; - buffer->_fixed = 0; - buffer->_vfixed = 0; - buffer->_status_err = 0; - - sldns_buffer_invariant(buffer); - - return buffer; -} - -void -sldns_buffer_new_frm_data(sldns_buffer *buffer, void *data, size_t size) -{ - assert(data != NULL); - - buffer->_position = 0; - buffer->_limit = buffer->_capacity = size; - buffer->_fixed = 0; - buffer->_vfixed = 0; - buffer->_data = malloc(size); - if(!buffer->_data) { - buffer->_status_err = 1; - return; - } - memcpy(buffer->_data, data, size); - buffer->_status_err = 0; - - sldns_buffer_invariant(buffer); -} - -void -sldns_buffer_init_frm_data(sldns_buffer *buffer, void *data, size_t size) -{ - memset(buffer, 0, sizeof(*buffer)); - buffer->_data = data; - buffer->_capacity = buffer->_limit = size; - buffer->_fixed = 1; - buffer->_vfixed = 0; -} - -void -sldns_buffer_init_vfixed_frm_data(sldns_buffer *buffer, void *data, size_t size) -{ - memset(buffer, 0, sizeof(*buffer)); - buffer->_data = data; - buffer->_capacity = buffer->_limit = size; - buffer->_fixed = 1; - buffer->_vfixed = 1; -} - -int -sldns_buffer_set_capacity(sldns_buffer *buffer, size_t capacity) -{ - void *data; - - sldns_buffer_invariant(buffer); - assert(buffer->_position <= capacity && !buffer->_fixed); - - data = (uint8_t *) realloc(buffer->_data, capacity); - if (!data) { - buffer->_status_err = 1; - return 0; - } else { - buffer->_data = data; - buffer->_limit = buffer->_capacity = capacity; - return 1; - } -} - -int -sldns_buffer_reserve(sldns_buffer *buffer, size_t amount) -{ - sldns_buffer_invariant(buffer); - assert(!buffer->_fixed); - if (buffer->_capacity < buffer->_position + amount) { - size_t new_capacity = buffer->_capacity * 3 / 2; - - if (new_capacity < buffer->_position + amount) { - new_capacity = buffer->_position + amount; - } - if (!sldns_buffer_set_capacity(buffer, new_capacity)) { - buffer->_status_err = 1; - return 0; - } - } - buffer->_limit = buffer->_capacity; - return 1; -} - -int -sldns_buffer_printf(sldns_buffer *buffer, const char *format, ...) -{ - va_list args; - int written = 0; - size_t remaining; - - if (sldns_buffer_status_ok(buffer)) { - sldns_buffer_invariant(buffer); - assert(buffer->_limit == buffer->_capacity); - - remaining = sldns_buffer_remaining(buffer); - va_start(args, format); - written = vsnprintf((char *) sldns_buffer_current(buffer), remaining, - format, args); - va_end(args); - if (written == -1) { - buffer->_status_err = 1; - return -1; - } else if (!buffer->_vfixed && (size_t) written >= remaining) { - if (!sldns_buffer_reserve(buffer, (size_t) written + 1)) { - buffer->_status_err = 1; - return -1; - } - va_start(args, format); - written = vsnprintf((char *) sldns_buffer_current(buffer), - sldns_buffer_remaining(buffer), format, args); - va_end(args); - if (written == -1) { - buffer->_status_err = 1; - return -1; - } - } - buffer->_position += written; - } - return written; -} - -void -sldns_buffer_free(sldns_buffer *buffer) -{ - if (!buffer) { - return; - } - - if (!buffer->_fixed) - free(buffer->_data); - - free(buffer); -} - -void * -sldns_buffer_export(sldns_buffer *buffer) -{ - buffer->_fixed = 1; - return buffer->_data; -} - -void -sldns_buffer_copy(sldns_buffer* result, sldns_buffer* from) -{ - size_t tocopy = sldns_buffer_limit(from); - - if(tocopy > sldns_buffer_capacity(result)) - tocopy = sldns_buffer_capacity(result); - sldns_buffer_clear(result); - sldns_buffer_write(result, sldns_buffer_begin(from), tocopy); - sldns_buffer_flip(result); -} |