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| Rev | Author | Line No. | Line |
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| 259 | daniel-mar | 1 | /* |
| 2 | This file is part of a common library |
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| 3 | Copyright (C) 2002-6 Toby Thain, toby@telegraphics.com.au |
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| 4 | |||
| 5 | This program is free software; you can redistribute it and/or modify |
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| 6 | it under the terms of the GNU General Public License as published by |
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| 7 | the Free Software Foundation; either version 2 of the License, or |
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| 8 | (at your option) any later version. |
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| 9 | |||
| 10 | This program is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 18 | */ |
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| 19 | |||
| 20 | /* BigEndian and LittleEndian file I/O for long words, short words, and bytes */ |
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| 21 | |||
| 22 | #include "file_io.h" |
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| 23 | |||
| 24 | OSErr read4B(FILEREF f,long *v){ |
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| 25 | unsigned char p[4]; |
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| 26 | FILECOUNT count = 4; |
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| 27 | OSErr e = FSRead(f,&count,p); |
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| 28 | if( !e ) |
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| 29 | *v = ((long)p[0]<<24) | ((long)p[1]<<16) | ((long)p[2]<<8) | (long)p[3]; |
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| 30 | return e; |
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| 31 | } |
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| 32 | |||
| 33 | OSErr read2B(FILEREF f,short *v){ |
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| 34 | unsigned char p[2]; |
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| 35 | FILECOUNT count = 2; |
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| 36 | OSErr e = FSRead(f,&count,p); |
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| 37 | if( !e ) |
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| 38 | *v = (p[0]<<8) | p[1]; |
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| 39 | return e; |
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| 40 | } |
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| 41 | |||
| 42 | OSErr read4L(FILEREF f,long *v){ |
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| 43 | unsigned char p[4]; |
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| 44 | FILECOUNT count = 4; |
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| 45 | OSErr e = FSRead(f,&count,p); |
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| 46 | if( !e ) |
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| 47 | *v = ((long)p[3]<<24) | ((long)p[2]<<16) | ((long)p[1]<<8) | (long)p[0]; |
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| 48 | return e; |
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| 49 | } |
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| 50 | |||
| 51 | OSErr read2L(FILEREF f,short *v){ |
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| 52 | unsigned char p[2]; |
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| 53 | FILECOUNT count = 2; |
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| 54 | OSErr e = FSRead(f,&count,p); |
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| 55 | if( !e ) |
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| 56 | *v = (p[1]<<8) | p[0]; |
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| 57 | return e; |
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| 58 | } |
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| 59 | |||
| 60 | OSErr read1(FILEREF f,unsigned char *v){ |
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| 61 | FILECOUNT count = 1; |
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| 62 | return FSRead(f,&count,v); |
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| 63 | } |
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| 64 | |||
| 65 | OSErr write4B(FILEREF f,long v){ |
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| 66 | unsigned char p[4]; |
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| 67 | FILECOUNT count = 4; |
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| 68 | p[3] = v; |
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| 69 | p[2] = v>>8; |
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| 70 | p[1] = v>>16; |
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| 71 | p[0] = v>>24; |
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| 72 | return FSWrite(f,&count,p); |
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| 73 | } |
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| 74 | |||
| 75 | OSErr write2B(FILEREF f,short v){ |
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| 76 | unsigned char p[2]; |
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| 77 | FILECOUNT count = 2; |
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| 78 | p[1] = v; |
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| 79 | p[0] = v>>8; |
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| 80 | return FSWrite(f,&count,p); |
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| 81 | } |
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| 82 | |||
| 83 | OSErr write4L(FILEREF f,long v){ |
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| 84 | unsigned char p[4]; |
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| 85 | FILECOUNT count = 4; |
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| 86 | p[0] = v; |
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| 87 | p[1] = v>>8; |
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| 88 | p[2] = v>>16; |
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| 89 | p[3] = v>>24; |
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| 90 | return FSWrite(f,&count,p); |
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| 91 | } |
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| 92 | |||
| 93 | OSErr write2L(FILEREF f,short v){ |
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| 94 | unsigned char p[2]; |
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| 95 | FILECOUNT count = 2; |
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| 96 | p[0] = v; |
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| 97 | p[1] = v>>8; |
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| 98 | return FSWrite(f,&count,p); |
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| 99 | } |
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| 100 | |||
| 101 | OSErr write1(FILEREF f,unsigned char v){ |
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| 102 | FILECOUNT count = 1; |
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| 103 | return FSWrite(f,&count,&v); |
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| 104 | } |
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| 105 |