ClamAV is an open source (GPLv2) anti-virus toolkit.
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clamav/clamav-devel/libclamav/blob.h

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/*
* Copyright (C) 2002 Nigel Horne <njh@bandsman.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $LOG$
*/
typedef struct blob {
char *name; /* filename */
unsigned char *data; /* the stuff itself */
unsigned long len; /* number of bytes of data so far */
unsigned long size; /* number of bytes allocated to data so far */
int isClosed;
#ifdef CL_DEBUG
object_type magic; /* verify that this is a blob */
#endif
} blob;
blob *blobCreate(void);
void blobDestroy(blob *b);
void blobArrayDestroy(blob *b[], int n);
void blobSetFilename(blob *b, const char *filename);
const char *blobGetFilename(const blob *b);
void blobAddData(blob *b, const unsigned char *data, size_t len);
unsigned char *blobGetData(const blob *b);
unsigned long blobGetDataSize(const blob *b);
void blobClose(blob *b);
int blobcmp(const blob *b1, const blob *b2);
void blobGrow(blob *b, size_t len);