jfileoutputstream.cpp
3.93 KB
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
176
177
/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program 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. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "Stdafx.h"
#include "jfileoutputstream.h"
#include "jioexception.h"
#include "jnullpointerexception.h"
namespace jio {
FileOutputStream::FileOutputStream(std::string filename_):
jio::OutputStream()
{
jcommon::Object::SetClassName("jio::FileOutputStream");
_buffer_length = 4096;
_current_index = 0;
_sent_bytes = 0;
try {
_buffer = new char[(int)_buffer_length];
} catch (std::bad_alloc &) {
throw IOException("Out of memory");
}
try {
_file = new File(filename_, JFF_READ_WRITE | JFF_LARGEFILE | JFF_CREATE);
} catch (...) {
_file = NULL;
throw IOException("Open file failed");
}
}
FileOutputStream::FileOutputStream(File *file_):
jio::OutputStream()
{
jcommon::Object::SetClassName("jio::FileOutputStream");
_file = file_;
if (_file == NULL) {
throw jcommon::NullPointerException("File pointer is null");
}
_buffer_length = 4096;
_current_index = 0;
_sent_bytes = 0;
try {
_buffer = new char[(int)_buffer_length];
} catch (std::bad_alloc &) {
throw IOException("Out of memory");
}
}
FileOutputStream::~FileOutputStream()
{
if ((void *)_file != NULL) {
// delete _file;
}
if ((void *)_buffer != NULL) {
delete [] _buffer;
}
}
bool FileOutputStream::IsEmpty()
{
return Available() == 0;
}
int64_t FileOutputStream::Available()
{
return 0LL;
}
int64_t FileOutputStream::GetSize()
{
return _file->GetSize();
}
int64_t FileOutputStream::Write(int64_t b)
{
_buffer[_current_index++] = (uint8_t)b;
if (_current_index == _buffer_length) {
return Flush();
}
return 0LL;
}
int64_t FileOutputStream::Write(const char *data_, int64_t data_length_)
{
int64_t size,
l = data_length_;
while (l > 0LL) {
size = (_buffer_length - _current_index);
if (l < size) {
memcpy((_buffer + _current_index), (data_ + (int)(data_length_ - l)), (size_t)l);
_current_index += l;
l = 0;
break;
} else {
memcpy((_buffer + _current_index), (data_ + data_length_ - l), (size_t)size);
l = l - size;
_current_index = _buffer_length;
if (Flush() == -1LL) {
return -1LL;
}
}
}
return (int64_t)(data_length_ - l);
}
int64_t FileOutputStream::Flush()
{
if (_current_index == 0) {
return 0LL;
}
int64_t n;
n = _file->Write(_buffer, (int)_current_index);
_current_index = 0LL;
if (n <= 0LL) {
return -1LL;
}
_sent_bytes += n;
return (int64_t)n;
}
void FileOutputStream::Seek(int64_t index)
{
_file->Seek(index);
}
void FileOutputStream::Close()
{
_file->Close();
}
int64_t FileOutputStream::GetSentBytes()
{
return _sent_bytes;
}
}