1 /* Copyright (C) 2021 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
23 #include "DataStream.h"
26 DataStream::DataStream (char *filename) : Data_window (filename)
31 DataStream::~DataStream () { }
34 DataStream::set_span (int64_t f_offset, int64_t sz)
37 span_fileoffset = f_offset;
38 int64_t fsz = get_fsize ();
39 span_size = sz == -1 ? fsz : sz;
40 if (span_fileoffset >= fsz)
41 span_fileoffset = fsz;
42 if (span_size > fsz - span_fileoffset)
43 span_size = fsz - span_fileoffset;
47 DataStream::read (void *buf, int64_t len)
49 if (len > span_size - span_offset)
50 len = span_size - span_offset;
51 int64_t off = span_offset + span_fileoffset;
53 get_data (off, len, buf);