/* Copyright (C) 2004 J.F.Dockes
* 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _READFILE_H_INCLUDED_
#define _READFILE_H_INCLUDED_
#include <sys/types.h>
#include <string>
using std::string;
/**
* Read file in chunks, calling an accumulator for each chunk. Can be used
* for reading in a file, computing an md5...
*/
class FileScanDo {
public:
virtual ~FileScanDo() {}
virtual bool init(unsigned int size, string *reason) = 0;
virtual bool data(const char *buf, int cnt, string* reason) = 0;
};
bool file_scan(const string &filename, FileScanDo* doer, string *reason = 0);
/* Same but only process count cnt from offset offs. Set cnt to size_t(-1)
* for no limit */
bool file_scan(const string &fn, FileScanDo* doer, off_t offs, size_t cnt,
string *reason = 0);
/**
* Read file into string.
* @return true for ok, false else
*/
bool file_to_string(const string &filename, string &data, string *reason = 0);
/** Read file chunk into string. Set cnt to size_t(-1) for whole file */
bool file_to_string(const string &filename, string &data,
off_t offs, size_t cnt, string *reason = 0);
#endif /* _READFILE_H_INCLUDED_ */