51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
/* 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>
|
|
|
|
/**
|
|
* 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(size_t size, std::string *reason) = 0;
|
|
virtual bool data(const char *buf, int cnt, std::string* reason) = 0;
|
|
};
|
|
bool file_scan(const std::string& filename, FileScanDo* doer, std::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 std::string& fn, FileScanDo* doer, int64_t offs, size_t cnt,
|
|
std::string *reason = 0);
|
|
|
|
/**
|
|
* Read file into string.
|
|
* @return true for ok, false else
|
|
*/
|
|
bool file_to_string(const std::string& filename, std::string& data, std::string *reason = 0);
|
|
|
|
/** Read file chunk into string. Set cnt to size_t(-1) for whole file */
|
|
bool file_to_string(const std::string& filename, std::string& data,
|
|
int64_t offs, size_t cnt, std::string *reason = 0);
|
|
|
|
#endif /* _READFILE_H_INCLUDED_ */
|