77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* -------------------------------------------------------------------
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*
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* bin_helper: ErlDrvBinary helper functions
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* Copyright (c) 2008-9 The Hive http://www.thehive.com/
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* Authors: Dave "dizzyd" Smith <dizzyd@dizzyd.com>
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* Phil Toland <phil.toland@gmail.com>
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* Jon Meredith <jmeredith@thehive.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* ------------------------------------------------------------------- */
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#include "bin_helper.h"
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#include <string.h>
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#include <stdlib.h>
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static void bin_helper_check_size(BinHelper* bh, int space_needed)
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{
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if (bh->bin && (bh->offset + space_needed > bh->bin->orig_size))
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{
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bh->bin = driver_realloc_binary(bh->bin, bh->offset + space_needed);
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}
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else if (!bh->bin)
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{
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bh->bin = driver_alloc_binary(space_needed);
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}
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}
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void bin_helper_init(BinHelper* bh)
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{
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bh->bin = 0;
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bh->offset = 0;
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}
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void bin_helper_push_byte(BinHelper* bh, int value)
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{
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bin_helper_check_size(bh, 1);
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bh->bin->orig_bytes[bh->offset] = (char)value;
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bh->offset++;
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}
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void bin_helper_push_int32(BinHelper* bh, int value)
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{
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bin_helper_check_size(bh, 4);
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memcpy(bh->bin->orig_bytes+(bh->offset), (char*)&value, 4);
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bh->offset += 4;
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}
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void bin_helper_push_string(BinHelper* bh, const char* string)
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{
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if (NULL == string)
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{
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string = "<null>";
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}
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int sz = strlen(string);
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bin_helper_check_size(bh, sz+1);
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strncpy(bh->bin->orig_bytes+(bh->offset), string, sz+1);
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bh->offset += sz + 1;
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}
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