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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* file.cc
*
* Thu Jun 9 15:31:38 CEST 2005
* Copyright 2005 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MIaV is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
/*
* $Id$
*/
/*
* $Log$
* Revision 1.1 2005/06/09 17:54:00 deva
* New file object, that takes care of uniqueness and counts up number in
* filename, when grown too big.
*
*/
#include <config.h>
#include "file.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
File::File(char *fn, char* ext)
{
char path[256];
filename = (char*)malloc(strlen(fn) + 1);
extension = (char*)malloc(strlen(ext) + 1);
strcpy(filename, fn);
strcpy(extension, ext);
num = 0;
fd = -1;
int pos = (int)strrchr(filename, '/');
memset(path, 0, sizeof(path));
if(pos) { // pos is NULL, a file will be created in the current dir (Which is bad)
pos -= (int)filename; // Make pos relative to the beginning of the string
strncpy(path, filename, pos);
createPath(path);
}
Open();
}
File::~File()
{
close(fd);
free(filename);
free(extension);
}
int File::Open()
{
char fname[256];
if(fd) close(fd);
fd = -1;
while(fd == -1) {
sprintf(fname, "%s%.3d.%s", filename, num, extension);
fd = open(fname, O_CREAT | O_WRONLY | O_SYNC | O_EXCL, //| O_LARGEFILE
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
num ++;
// If more than 1000 files are created in one day, something is terribly wrong!
if(num > 1000) {
fprintf(stderr, "Something is wrong with tha path [%s]!\n", fname);
exit(1);
}
}
return 0;
}
int File::Write(void* data, int size)
{
int w;
w = write(fd, data, size);
if(w != size) {
Open();
w = write(fd, data, size);
if(w != size) {
fprintf(stderr, "Out of diskspace!\n");
exit(1);
}
}
return w;
}
int File::createPath(char* path)
{
// struct stat stats;
char *subpath;
subpath = (char*)calloc(strlen(path) + 1, 1);
strcpy(subpath, path);
subpath[strrchr(subpath, '/') - subpath] = '\0';
printf("%s\n", path);
if(strlen(subpath) > 0) createPath(subpath);
// stat(path, &stats);
//if(!S_ISDIR(stats.st_mode) && S_ISREG(stats.st_mode))
mkdir(path, S_IRWXU | S_IRGRP | S_IXGRP | S_IXOTH | S_IROTH);
free(subpath);
return 0;
}
#ifdef FILE_TEST // Test
#define BLOCK_SIZE 1024*1024
#define TIMES 4000
int main()
{
void *buf = malloc(BLOCK_SIZE);
double b = BLOCK_SIZE;
double t = TIMES;
double gb = b / (1024 * 1024 * 1024);
gb *= t;
printf("Writing %f GB.\n", gb);
File file("/tmp/filetest/folder1/folder2/file", "ext");
for(int cnt = 0; cnt < TIMES; cnt++) {
file.Write(buf, BLOCK_SIZE);
}
printf("Done.\n");
}
#endif // Test
|