1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* Copyright (c) 1998, Brian Cully <shmit@kublai.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of contributers to this software may not be used to endorse
* or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "BuffIO.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
@implementation BuffIO
-init: (const char *)fileName
{
struct stat sb;
int confFd;
confFd = open(fileName, O_RDONLY, 0);
if (confFd == -1) {
fprintf(stderr, "ERROR: couldn't open config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
if (fstat(confFd, &sb) == -1) {
fprintf(stderr, "ERROR: couldn't stat config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
fileLen = sb.st_size;
file = mmap(NULL, fileLen, PROT_READ, MAP_PRIVATE, confFd, 0);
if (file == MAP_FAILED) {
fprintf(stderr, "ERROR: couldn't mmap config file %s: %s.\n",
fileName, strerror(errno));
return nil;
}
close(confFd);
curOff = file;
EOL = '\n';
return self;
}
-free
{
munmap(file, fileLen);
return [super free];
}
-(char *)
getCurOff
{
return curOff;
}
-(off_t)
getLength
{
return fileLen;
}
-setEOL: (char)delim
{
EOL = delim;
return self;
}
@end
|
