1 /* Copyright (C) 2021-2024 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
);