mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-28 23:26:07 +00:00
339 lines
7 KiB
C++
339 lines
7 KiB
C++
// 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 <wchar.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include "id3_field.h"
|
|
#include <windows.h>
|
|
#include "../Plugins/Input/in_mp3/config.h" // TODO: cut
|
|
#include "id3_misc_support.h"
|
|
|
|
// this function is another way of using Set()
|
|
#if 0
|
|
ID3_Field &ID3_Field::operator=(wchar_t *string)
|
|
{
|
|
Set(string);
|
|
|
|
return *this;
|
|
}
|
|
#endif
|
|
|
|
|
|
// this is Set()
|
|
|
|
void ID3_Field::SetUnicode(const wchar_t *string)
|
|
{
|
|
luint bytesUsed = lstrlenW(string);
|
|
|
|
// we can simply increment the
|
|
// bytesUsed count here because
|
|
// we just pilfer the NULL which is
|
|
// present in the string which was
|
|
// passed to us
|
|
if (flags & ID3FF_NULL)
|
|
bytesUsed++;
|
|
|
|
// doubling the bytesUsed because
|
|
// Unicode is twice the size of ASCII
|
|
bytesUsed *= sizeof (wchar_t);
|
|
|
|
Set ((uchar *) string, bytesUsed);
|
|
|
|
type = ID3FTY_UNICODESTRING;
|
|
hasChanged = true;
|
|
}
|
|
|
|
|
|
void ID3_Field::AddUnicode(const wchar_t *string)
|
|
{
|
|
if (!data)
|
|
SetUnicode(string);
|
|
else
|
|
{
|
|
wchar_t *temp;
|
|
luint newLen;
|
|
lsint nullOffset = 0;
|
|
|
|
// if there is a NULL in this string, set this offset
|
|
// so that we ignore it in string size calculations
|
|
if (flags & ID3FF_NULL)
|
|
nullOffset = -1;
|
|
|
|
// +1 is for the NULL at the end and the
|
|
// other +1 is for the list divider
|
|
newLen = 1 + (size / sizeof (wchar_t)) + lstrlenW(string) + 1 + nullOffset;
|
|
|
|
// I use the value 1 as a divider because then I
|
|
// can change it to either a '/' or a NULL at render
|
|
// time. This allows easy use of these functions
|
|
// for text lists or in the IPLS frame
|
|
|
|
if (temp = (wchar_t*)calloc(newLen, sizeof(wchar_t)))
|
|
{
|
|
lstrcpyW(temp, (wchar_t *) data);
|
|
temp[(size / sizeof (wchar_t)) + nullOffset] = L'\001';
|
|
lstrcpyW (&temp[(size / sizeof (wchar_t)) + 1 + nullOffset], string);
|
|
|
|
SetUnicode(temp);
|
|
|
|
free(temp);
|
|
}
|
|
else
|
|
ID3_THROW (ID3E_NoMemory);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
// this is Get()
|
|
|
|
luint ID3_Field::GetUnicode(wchar_t *buffer, luint maxChars, luint itemNum)
|
|
{
|
|
luint charsUsed = 0;
|
|
|
|
// check to see if there is a string in the frame
|
|
// to copy before we even try
|
|
if (data)
|
|
{
|
|
lsint nullOffset = 0;
|
|
|
|
if (flags & ID3FF_NULL)
|
|
nullOffset = -1;
|
|
|
|
// first we must find which element
|
|
// is being sought to make sure it
|
|
// exists before we try to get it
|
|
if (itemNum <= GetNumTextItems() && itemNum > 0)
|
|
{
|
|
wchar_t *source = (wchar_t *) data;
|
|
luint posn = 0;
|
|
luint sourceLen = 0;
|
|
luint curItemNum = 1;
|
|
luint mx= (size / sizeof (wchar_t)) + nullOffset;
|
|
|
|
// now we find that element and set the souvre pointer
|
|
while (posn<mx && curItemNum < itemNum)
|
|
{
|
|
while (posn<mx && *source != L'\001' && *source != L'\0')
|
|
{
|
|
source++;
|
|
posn++;
|
|
}
|
|
|
|
source++;
|
|
posn++;
|
|
curItemNum++;
|
|
}
|
|
|
|
if(posn>=mx) return 0;
|
|
|
|
// now that we are positioned at the first character
|
|
// of the string we want, find the end of it
|
|
while (posn<mx && source[sourceLen] != L'\001' && source[sourceLen] != L'\0')
|
|
{
|
|
sourceLen++;
|
|
posn++;
|
|
}
|
|
|
|
if (maxChars) // JF
|
|
{
|
|
// we subtract 1 here so we have
|
|
// room for the NULL terminator
|
|
//maxChars--; // CT
|
|
|
|
if (buffer)
|
|
{
|
|
luint actualChars = MIN (maxChars-1, sourceLen);
|
|
|
|
wcsncpy (buffer, source, actualChars);
|
|
buffer[actualChars] = L'\0';
|
|
charsUsed = actualChars;
|
|
}
|
|
else
|
|
ID3_THROW (ID3E_NoBuffer);
|
|
}
|
|
}
|
|
}
|
|
|
|
return charsUsed;
|
|
}
|
|
|
|
|
|
luint ID3_Field::GetNumTextItems (void)
|
|
{
|
|
luint numItems = 0;
|
|
|
|
if (data)
|
|
{
|
|
luint posn = 0;
|
|
|
|
numItems++;
|
|
|
|
while (posn < size)
|
|
if (data[posn++] == L'\001')
|
|
numItems++;
|
|
}
|
|
|
|
return numItems;
|
|
}
|
|
|
|
|
|
luint ID3_Field::ParseUnicodeString (uchar *buffer, luint posn, luint buffSize)
|
|
{
|
|
luint bytesUsed = 0;
|
|
wchar_t *temp = NULL;
|
|
|
|
if (fixedLength != -1)
|
|
bytesUsed = fixedLength;
|
|
else
|
|
{
|
|
if (flags & ID3FF_NULL)
|
|
while ((posn + bytesUsed) < buffSize &&
|
|
! (buffer[posn + bytesUsed] == 0 && buffer[posn + bytesUsed + 1] == 0))
|
|
bytesUsed += 2;
|
|
else
|
|
bytesUsed = buffSize - posn;
|
|
}
|
|
|
|
if (bytesUsed > 0x8ffff)
|
|
{
|
|
hasChanged = false;
|
|
return 0;
|
|
}
|
|
|
|
if (bytesUsed)
|
|
{
|
|
if (temp = (wchar_t*)calloc(((bytesUsed / sizeof (wchar_t)) + 1), sizeof(wchar_t)))
|
|
{
|
|
luint loc = 0;
|
|
|
|
memcpy (temp, &buffer[posn], bytesUsed);
|
|
temp[bytesUsed / sizeof (wchar_t)] = 0;
|
|
|
|
// if there is a BOM, skip past it and check to see if we
|
|
// need to swap the byte order around
|
|
if (temp[0] == 0xFEFF || temp[0] == 0xFFFE)
|
|
{
|
|
loc++;
|
|
|
|
// if we need to swap the byte order
|
|
if (temp[0] != 0xFEFF)
|
|
{
|
|
int mylen=(int) lstrlenW(temp);
|
|
for (int i = loc; i < mylen; i++)
|
|
temp[i] = ((temp[i] >> 8) & 0xFF) | (((temp[i]) & 0xFF) << 8);
|
|
}
|
|
}
|
|
|
|
SetUnicode(&temp[loc]);
|
|
|
|
free(temp);
|
|
}
|
|
else
|
|
ID3_THROW (ID3E_NoMemory);
|
|
}
|
|
|
|
if (flags & ID3FF_NULL)
|
|
bytesUsed += 2;
|
|
|
|
hasChanged = false;
|
|
|
|
return bytesUsed;
|
|
}
|
|
|
|
|
|
luint ID3_Field::RenderUnicodeString(uchar *buffer)
|
|
{
|
|
luint bytesUsed = 0;
|
|
|
|
bytesUsed = BinSize();
|
|
|
|
if (data && size && bytesUsed >= sizeof (wchar_t))
|
|
{
|
|
wchar_t *ourString = (wchar_t *) &buffer[sizeof(wchar_t)];
|
|
|
|
// we render at sizeof (wchar_t) bytes into the buffer
|
|
// because we make room for the Unicode BOM
|
|
memcpy (&buffer[sizeof (wchar_t)], (uchar *) data, bytesUsed - sizeof (wchar_t));
|
|
|
|
// now we convert the internal dividers to what they
|
|
// are supposed to be
|
|
size_t numChars = bytesUsed / sizeof (wchar_t);
|
|
for (size_t i = 0; i != numChars-1; i++)
|
|
if (ourString[i] == 1)
|
|
{
|
|
wchar_t sub = L'/';
|
|
|
|
if (flags & ID3FF_NULLDIVIDE)
|
|
sub = L'\0';
|
|
|
|
ourString[i] = sub;
|
|
}
|
|
}
|
|
|
|
if (bytesUsed)
|
|
{
|
|
// render the BOM
|
|
wchar_t *BOM = (wchar_t *) buffer;
|
|
BOM[0] = 0xFEFF;
|
|
}
|
|
|
|
if (bytesUsed == 2 && (flags & ID3FF_NULL))
|
|
buffer[0] = buffer[1] = 0;
|
|
|
|
hasChanged = false;
|
|
|
|
return bytesUsed;
|
|
}
|
|
|
|
luint ID3_Field::RenderUTF8String(uchar *buffer)
|
|
{
|
|
luint bytesUsed = 0;
|
|
|
|
buffer[0] = 0;
|
|
bytesUsed = BinSize();
|
|
|
|
if (data && size)
|
|
{
|
|
luint i;
|
|
|
|
ID3_UnicodeToUTF8( (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;
|
|
}
|
|
|
|
|