1 /*
2 * Seven Kingdoms: Ancient Adversaries
3 *
4 * Copyright 2010 Unavowed <unavowed@vexillium.org>
5 *
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 2 of the License, or
9 * (at your option) any later version.
10 *
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.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 *
19 */
20 #ifndef OUTPUT_STREAM_H
21 #define OUTPUT_STREAM_H
22
23 #include <stdint.h>
24 #include <stdio.h>
25
26 class OutputStream
27 {
28 public:
~OutputStream()29 virtual ~OutputStream() {}
30 virtual long write(const void *data, long length) = 0;
31 virtual bool seek(long offset, int whence) = 0;
32 virtual long tell() = 0;
33 virtual void close() = 0;
34 };
35
36 /* Writes a little-endian integer */
37 template <typename T>
write_le_integer(OutputStream * os,T val)38 bool write_le_integer(OutputStream *os, T val)
39 {
40 unsigned char c;
41
42 for (int n = 0; n < static_cast<int>(sizeof(T)); n++)
43 {
44 c = val >> (8 * n);
45
46 if (os->write(&c, 1) != 1)
47 return false;
48 }
49
50 return true;
51 }
52
53 template <typename T>
write_le(OutputStream * os,T val)54 bool write_le(OutputStream *os, T val)
55 {
56 return write_le_integer<T>(os, val);
57 }
58
59 template <> bool write_le<float>(OutputStream *os, float val);
60 template <> bool write_le<double>(OutputStream *os, double val);
61
62 /* vim: set ts=8 sw=3: */
63 #endif
64