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| 1 | /* |
1 | /* |
| 2 | This file is part of a common library |
2 | This file is part of a common library |
| 3 | Copyright (C) 2002-6 Toby Thain, toby@telegraphics.com.au |
3 | Copyright (C) 2002-6 Toby Thain, toby@telegraphics.com.au |
| 4 | 4 | ||
| 5 | This program is free software; you can redistribute it and/or modify |
5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
8 | (at your option) any later version. |
| 9 | 9 | ||
| 10 | This program is distributed in the hope that it will be useful, |
10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
13 | GNU General Public License for more details. |
| 14 | 14 | ||
| 15 | You should have received a copy of the GNU General Public License |
15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
18 | */ |
| 19 | 19 | ||
| 20 | /* BigEndian and LittleEndian file I/O for long words, short words, and bytes */ |
20 | /* BigEndian and LittleEndian file I/O for long words, short words, and bytes */ |
| 21 | 21 | ||
| 22 | #include "file_io.h" |
22 | #include "file_io.h" |
| 23 | 23 | ||
| 24 | OSErr read4B(FILEREF f,long *v){ |
24 | OSErr read4B(FILEREF f,long *v){ |
| 25 | unsigned char p[4]; |
25 | unsigned char p[4]; |
| 26 | FILECOUNT count = 4; |
26 | FILECOUNT count = 4; |
| 27 | OSErr e = FSRead(f,&count,p); |
27 | OSErr e = FSRead(f,&count,p); |
| 28 | if( !e ) |
28 | if( !e ) |
| 29 | *v = ((long)p[0]<<24) | ((long)p[1]<<16) | ((long)p[2]<<8) | (long)p[3]; |
29 | *v = ((long)p[0]<<24) | ((long)p[1]<<16) | ((long)p[2]<<8) | (long)p[3]; |
| 30 | return e; |
30 | return e; |
| 31 | } |
31 | } |
| 32 | 32 | ||
| 33 | OSErr read2B(FILEREF f,short *v){ |
33 | OSErr read2B(FILEREF f,short *v){ |
| 34 | unsigned char p[2]; |
34 | unsigned char p[2]; |
| 35 | FILECOUNT count = 2; |
35 | FILECOUNT count = 2; |
| 36 | OSErr e = FSRead(f,&count,p); |
36 | OSErr e = FSRead(f,&count,p); |
| 37 | if( !e ) |
37 | if( !e ) |
| 38 | *v = (p[0]<<8) | p[1]; |
38 | *v = (p[0]<<8) | p[1]; |
| 39 | return e; |
39 | return e; |
| 40 | } |
40 | } |
| 41 | 41 | ||
| 42 | OSErr read4L(FILEREF f,long *v){ |
42 | OSErr read4L(FILEREF f,long *v){ |
| 43 | unsigned char p[4]; |
43 | unsigned char p[4]; |
| 44 | FILECOUNT count = 4; |
44 | FILECOUNT count = 4; |
| 45 | OSErr e = FSRead(f,&count,p); |
45 | OSErr e = FSRead(f,&count,p); |
| 46 | if( !e ) |
46 | if( !e ) |
| 47 | *v = ((long)p[3]<<24) | ((long)p[2]<<16) | ((long)p[1]<<8) | (long)p[0]; |
47 | *v = ((long)p[3]<<24) | ((long)p[2]<<16) | ((long)p[1]<<8) | (long)p[0]; |
| 48 | return e; |
48 | return e; |
| 49 | } |
49 | } |
| 50 | 50 | ||
| 51 | OSErr read2L(FILEREF f,short *v){ |
51 | OSErr read2L(FILEREF f,short *v){ |
| 52 | unsigned char p[2]; |
52 | unsigned char p[2]; |
| 53 | FILECOUNT count = 2; |
53 | FILECOUNT count = 2; |
| 54 | OSErr e = FSRead(f,&count,p); |
54 | OSErr e = FSRead(f,&count,p); |
| 55 | if( !e ) |
55 | if( !e ) |
| 56 | *v = (p[1]<<8) | p[0]; |
56 | *v = (p[1]<<8) | p[0]; |
| 57 | return e; |
57 | return e; |
| 58 | } |
58 | } |
| 59 | 59 | ||
| 60 | OSErr read1(FILEREF f,unsigned char *v){ |
60 | OSErr read1(FILEREF f,unsigned char *v){ |
| 61 | FILECOUNT count = 1; |
61 | FILECOUNT count = 1; |
| 62 | return FSRead(f,&count,v); |
62 | return FSRead(f,&count,v); |
| 63 | } |
63 | } |
| 64 | 64 | ||
| 65 | OSErr write4B(FILEREF f,long v){ |
65 | OSErr write4B(FILEREF f,long v){ |
| 66 | unsigned char p[4]; |
66 | unsigned char p[4]; |
| 67 | FILECOUNT count = 4; |
67 | FILECOUNT count = 4; |
| 68 | p[3] = v; |
68 | p[3] = v; |
| 69 | p[2] = v>>8; |
69 | p[2] = v>>8; |
| 70 | p[1] = v>>16; |
70 | p[1] = v>>16; |
| 71 | p[0] = v>>24; |
71 | p[0] = v>>24; |
| 72 | return FSWrite(f,&count,p); |
72 | return FSWrite(f,&count,p); |
| 73 | } |
73 | } |
| 74 | 74 | ||
| 75 | OSErr write2B(FILEREF f,short v){ |
75 | OSErr write2B(FILEREF f,short v){ |
| 76 | unsigned char p[2]; |
76 | unsigned char p[2]; |
| 77 | FILECOUNT count = 2; |
77 | FILECOUNT count = 2; |
| 78 | p[1] = v; |
78 | p[1] = v; |
| 79 | p[0] = v>>8; |
79 | p[0] = v>>8; |
| 80 | return FSWrite(f,&count,p); |
80 | return FSWrite(f,&count,p); |
| 81 | } |
81 | } |
| 82 | 82 | ||
| 83 | OSErr write4L(FILEREF f,long v){ |
83 | OSErr write4L(FILEREF f,long v){ |
| 84 | unsigned char p[4]; |
84 | unsigned char p[4]; |
| 85 | FILECOUNT count = 4; |
85 | FILECOUNT count = 4; |
| 86 | p[0] = v; |
86 | p[0] = v; |
| 87 | p[1] = v>>8; |
87 | p[1] = v>>8; |
| 88 | p[2] = v>>16; |
88 | p[2] = v>>16; |
| 89 | p[3] = v>>24; |
89 | p[3] = v>>24; |
| 90 | return FSWrite(f,&count,p); |
90 | return FSWrite(f,&count,p); |
| 91 | } |
91 | } |
| 92 | 92 | ||
| 93 | OSErr write2L(FILEREF f,short v){ |
93 | OSErr write2L(FILEREF f,short v){ |
| 94 | unsigned char p[2]; |
94 | unsigned char p[2]; |
| 95 | FILECOUNT count = 2; |
95 | FILECOUNT count = 2; |
| 96 | p[0] = v; |
96 | p[0] = v; |
| 97 | p[1] = v>>8; |
97 | p[1] = v>>8; |
| 98 | return FSWrite(f,&count,p); |
98 | return FSWrite(f,&count,p); |
| 99 | } |
99 | } |
| 100 | 100 | ||
| 101 | OSErr write1(FILEREF f,unsigned char v){ |
101 | OSErr write1(FILEREF f,unsigned char v){ |
| 102 | FILECOUNT count = 1; |
102 | FILECOUNT count = 1; |
| 103 | return FSWrite(f,&count,&v); |
103 | return FSWrite(f,&count,&v); |
| 104 | } |
104 | } |
| 105 | 105 | ||