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Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
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Src/id3v2/id3_field_string_ascii.cpp Normal file
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// 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
// improved/optimized/whatever 10/30/00 JF
// improved/optimized/whatEVER jan-08-2006 benski
#include <stdlib.h>
#include "id3_field.h"
#include "id3_misc_support.h"
#include "../nu/AutoWide.h"
#include "../Plugins/Input/in_mp3/config.h" // TODO: cut
// the ::Set() function for ASCII
void ID3_Field::SetLocal(const char *newString)
{
if (newString)
{
Clear();
AutoWide temp(newString);
SetUnicode(temp);
if (!(flags & ID3FF_ADJUSTENC))
type = ID3FTY_ASCIISTRING;
}
}
void ID3_Field::SetLatin(const char *newString)
{
if (newString)
{
Clear();
AutoWide temp(newString, 28591); // ISO-8859-1 code page
SetUnicode(temp);
type = ID3FTY_ASCIISTRING;
}
return;
}
void ID3_Field::SetUTF8(const char *newString)
{
if (newString)
{
Clear();
AutoWide temp(newString, CP_UTF8);
SetUnicode(temp);
}
return;
}
// the ::Get() function for ASCII
luint ID3_Field::GetLocal(char *buffer, luint maxLength, luint itemNum)
{
luint bytesUsed = 0;
wchar_t *temp;
if (temp = (wchar_t*)calloc(maxLength, sizeof(wchar_t)))
{
if (GetUnicode(temp, maxLength, itemNum))
{
bytesUsed = ID3_UnicodeToLocal(buffer, temp, maxLength);
}
free(temp);
}
else
ID3_THROW (ID3E_NoMemory);
return bytesUsed;
}
void ID3_Field::AddLocal(const char *newString)
{
if (newString)
{
AutoWide temp(newString);
AddUnicode(temp);
}
}
void ID3_Field::AddLatin(const char *newString)
{
if (newString)
{
AutoWide temp(newString, 28591);
AddUnicode(temp);
type = ID3FTY_ASCIISTRING;
}
}
luint ID3_Field::ParseASCIIString(uchar *buffer, luint posn, luint buffSize)
{
luint bytesUsed = 0;
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 > 0xffff) // keep it sane, yo (64kb string max should be good)
{
hasChanged=false;
return 0;
}
if (bytesUsed)
{
char *temp = NULL;
if (temp = (char*)calloc(bytesUsed + 1, sizeof(char)))
{
memcpy(temp, &buffer[posn], bytesUsed);
temp[bytesUsed] = 0;
if (config_read_mode == READ_LOCAL) // benski> I added a config option to deal with old tags
SetLocal(temp);
else
SetLatin(temp);
if (!(flags & ID3FF_ADJUSTENC))
type = ID3FTY_ASCIISTRING;
free(temp);
}
else
ID3_THROW (ID3E_NoMemory);
}
if (flags & ID3FF_NULL)
bytesUsed++;
hasChanged = false;
return bytesUsed;
}
luint ID3_Field::ParseUTF8String(uchar *buffer, luint posn, luint buffSize)
{
luint bytesUsed = 0;
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 > 0xffff) // keep it sane, yo (64kb string max should be good)
{
hasChanged=false;
return 0;
}
if (bytesUsed)
{
char *temp = NULL;
if (temp = (char*)calloc(bytesUsed + 1, sizeof(char)))
{
memcpy (temp, &buffer[posn], bytesUsed);
temp[bytesUsed] = 0;
SetUTF8(temp);
free(temp);
}
else
ID3_THROW (ID3E_NoMemory);
}
if (flags & ID3FF_NULL)
bytesUsed++;
hasChanged = false;
return bytesUsed;
}
luint ID3_Field::RenderLatinString(uchar *buffer)
{
luint bytesUsed = 0;
buffer[0] = 0;
bytesUsed = BinSize();
if (data && size)
{
luint i;
// benski> I added a config option for whether to use "broken" local system encoding mode
if (config_write_mode == WRITE_LATIN)
ID3_UnicodeToLatin( (char*)buffer, (const wchar_t *) data, bytesUsed, (int)bytesUsed);
else
ID3_UnicodeToLocal( (char*)buffer, (const wchar_t *) data, bytesUsed, bytesUsed);
for (i = 0;i < bytesUsed; i++)
{
if (buffer[i] == 1)
{
char sub = '/';
if (flags & ID3FF_NULLDIVIDE)
sub = '\0';
buffer[i] = sub;
}
}
}
if (bytesUsed == 1 && flags & ID3FF_NULL)
buffer[0] = 0;
hasChanged = false;
return bytesUsed;
}