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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
// patent or other intellectual property protection in this work. This means that
// it may be modified, redistributed and used in commercial and non-commercial
// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
//
// The ID3Lib authors encourage improvements and optimisations to be sent to the
// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
// submissions may be altered, and will be included and released under these terms.
//
// Mon Nov 23 18:34:01 1998
#include <stdlib.h>
#include "id3_field.h"
#include "id3_misc_support.h"
ID3_Field& ID3_Field::operator= ( char *string )
{
Set ( string );
return *this;
}
// the ::Set() function for ASCII
void ID3_Field::Set ( char *newString )
{
if ( newString )
{
wchar_t *temp;
Clear();
if ( temp = new wchar_t[ strlen ( newString ) + 1 ] )
{
ID3_ASCIItoUnicode ( temp, newString, strlen ( newString ) + 1 );
Set ( temp );
delete[] temp;
type = ID3FTY_ASCIISTRING;
}
}
return;
}
// the ::Get() function for ASCII
luint ID3_Field::Get ( char *buffer, luint maxLength, luint itemNum )
{
luint bytesUsed = 0;
wchar_t *temp;
char *ascii;
if ( temp = new wchar_t[ maxLength ] )
{
luint len;
if ( len = Get ( temp, maxLength, itemNum ) )
{
if ( ascii = new char[ len + 1 ] )
{
luint length;
ID3_UnicodeToASCII ( ascii, temp, len + 1 );
length = MIN ( strlen ( ascii ), maxLength );
strncpy ( buffer, ascii, length );
buffer[ length ] = 0;
bytesUsed = length;
delete[] ascii;
}
else
ID3_THROW ( ID3E_NoMemory );
}
delete[] temp;
}
else
ID3_THROW ( ID3E_NoMemory );
return bytesUsed;
}
void ID3_Field::Add ( char *newString )
{
if ( newString )
{
wchar_t *temp;
if ( temp = new wchar_t[ strlen ( newString ) + 1 ] )
{
ID3_ASCIItoUnicode ( temp, newString, strlen ( newString ) + 1 );
Add ( temp );
delete[] temp;
type = ID3FTY_ASCIISTRING;
}
}
return;
}
luint ID3_Field::ParseASCIIString ( uchar *buffer, luint posn, luint buffSize )
{
luint bytesUsed = 0;
char *temp = NULL;
if ( fixedLength != -1 )
bytesUsed = fixedLength;
else
{
if ( flags & ID3FF_NULL )
while ( ( posn + bytesUsed ) < buffSize && buffer[ posn + bytesUsed ] != 0 )
bytesUsed++;
else
bytesUsed = buffSize - posn;
}
if ( bytesUsed )
{
if ( temp = new char[ bytesUsed + 1 ] )
{
memcpy ( temp, &buffer[ posn ], bytesUsed );
temp[ bytesUsed ] = 0;
Set ( temp );
delete[] temp;
}
else
ID3_THROW ( ID3E_NoMemory );
}
if ( flags & ID3FF_NULL )
bytesUsed++;
hasChanged = false;
return bytesUsed;
}
luint ID3_Field::RenderASCIIString ( uchar *buffer )
{
luint bytesUsed = 0;
char *ascii;
bytesUsed = BinSize();
if ( data && size )
{
if ( ascii = new char[ size ] )
{
luint i;
ID3_UnicodeToASCII ( ascii, (wchar_t *) data, size );
memcpy ( buffer, (uchar *) ascii, bytesUsed );
// now we convert the internal dividers to what they
// are supposed to be
for ( i = 0; i < bytesUsed; i++ )
if ( buffer[ i ] == 1 )
{
char sub = '/';
if ( flags & ID3FF_NULLDIVIDE )
sub = '\0';
buffer[ i ] = sub;
}
if ( size - 1 < bytesUsed )
for ( i = 0; i < ( size - 1 - bytesUsed ); i++ )
buffer[ bytesUsed + i ] = 0x20;
delete[] ascii;
}
else
ID3_THROW ( ID3E_NoMemory );
}
if ( bytesUsed == 1 && flags & ID3FF_NULL )
buffer[ 0 ] = 0;
hasChanged = false;
return bytesUsed;
}
|
