/*
  *  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.

  *
  * $LOG$

  */
 

 #ifndef __BLOB_H
 #define __BLOB_H
 
 /*
  * Resizable chunk of memory
  */

 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 *dir, const char *filename);

 const	char	*blobGetFilename(const blob *b);

 int	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);

 
 /*
  * Like a blob, but associated with a file
  */
 typedef	struct fileblob {
 	FILE	*fp;
 	blob	b;

 	int	isNotEmpty;

 } fileblob;
 
 fileblob	*fileblobCreate(void);
 void	fileblobDestroy(fileblob *fb);
 void	fileblobSetFilename(fileblob *fb, const char *dir, const char *filename);
 const	char	*fileblobGetFilename(const fileblob *fb);

 int	fileblobAddData(fileblob *fb, const unsigned char *data, size_t len);

 void	sanitiseName(char *name);

 /* Maximum filenames under various systems */
 #ifndef NAME_MAX        /* e.g. Linux */
 # ifdef MAXNAMELEN      /* e.g. Solaris */
 #   define      NAME_MAX        MAXNAMELEN
 # else
 #   ifdef       FILENAME_MAX    /* e.g. SCO */
 #     define    NAME_MAX        FILENAME_MAX
 #   else
 #     define    NAME_MAX        256
 #   endif
 # endif
 #endif
 

 #endif /*_BLOB_H*/