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#include "main.h"
#include "PlaylistsCOM.h"
using namespace Nullsoft::Utility;
enum
{
DISP_PLALISTS_GETXML = 777,
};
#define CHECK_ID(str, id) if (wcscmp(rgszNames[i], L##str) == 0) { rgdispid[i] = id; continue; }
HRESULT PlaylistsCOM::GetIDsOfNames(REFIID riid, OLECHAR FAR* FAR* rgszNames, unsigned int cNames, LCID lcid, DISPID FAR* rgdispid)
{
bool unknowns = false;
for (unsigned int i = 0;i != cNames;i++)
{
CHECK_ID("GetXML", DISP_PLALISTS_GETXML)
rgdispid[i] = DISPID_UNKNOWN;
unknowns = true;
}
if (unknowns)
return DISP_E_UNKNOWNNAME;
else
return S_OK;
}
HRESULT PlaylistsCOM::GetTypeInfo(unsigned int itinfo, LCID lcid, ITypeInfo FAR* FAR* pptinfo)
{
return E_NOTIMPL;
}
HRESULT PlaylistsCOM::GetTypeInfoCount(unsigned int FAR * pctinfo)
{
return E_NOTIMPL;
}
static void WriteEscaped(FILE *fp, const wchar_t *str)
{
// TODO: for speed optimization,
// we should wait until we hit a special character
// and write out everything else so before it,
// like how ASX loader does it
while (str && *str)
{
switch (*str)
{
case L'&':
fputws(L"&", fp);
break;
case L'>':
fputws(L">", fp);
break;
case L'<':
fputws(L"<", fp);
break;
case L'\'':
fputws(L"'", fp);
break;
case L'\"':
fputws(L""", fp);
break;
default:
fputwc(*str, fp);
break;
}
// write out the whole UTF-16 character
wchar_t *next = CharNextW(str);
while (++str != next)
fputwc(*str, fp);
}
}
static void SavePlaylistsXML(const wchar_t *destination, size_t limit)
{
AutoLockT<api_playlists> lock (AGAVE_API_PLAYLISTS);
FILE *fp = _wfopen(destination, L"wb");
fputws(L"\xFEFF", fp);
fwprintf(fp, L"<?xml version=\"1.0\" encoding=\"UTF-16\"?>");
size_t numPlaylists = limit ? min(limit, AGAVE_API_PLAYLISTS->GetCount()) : AGAVE_API_PLAYLISTS->GetCount();
fwprintf(fp, L"<playlists playlists=\"%lu\">", numPlaylists);
for (size_t i = 0; i != numPlaylists; i++)
{
fputws(L"<playlist filename=\"", fp);
WriteEscaped(fp, AGAVE_API_PLAYLISTS->GetFilename(i));
fputws(L"\" title=\"", fp);
WriteEscaped(fp, AGAVE_API_PLAYLISTS->GetName(i));
unsigned int numItems = 0, length = 0;
AGAVE_API_PLAYLISTS->GetInfo(i, api_playlists_itemCount, &numItems, sizeof(numItems));
AGAVE_API_PLAYLISTS->GetInfo(i, api_playlists_totalTime, &length, sizeof(length));
fwprintf(fp, L"\" songs=\"%u\" seconds=\"%u\"/>",
numItems,
length);
}
fwprintf(fp, L"</playlists>");
fclose(fp);
}
HRESULT PlaylistsCOM::Invoke(DISPID dispid, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS FAR *pdispparams, VARIANT FAR *pvarResult, EXCEPINFO FAR * pexecinfo, unsigned int FAR *puArgErr)
{
switch (dispid)
{
case DISP_PLALISTS_GETXML:
{
int max = 0;
if (pdispparams->cArgs == 1)
{
max = _wtoi(pdispparams->rgvarg[0].bstrVal);
}
wchar_t tempPath[MAX_PATH] = {0};
GetTempPathW(MAX_PATH, tempPath);
wchar_t tempFile[MAX_PATH] = {0};
GetTempFileNameW(tempPath, L"mpx", 0, tempFile);
SavePlaylistsXML(tempFile, max);
HANDLE plFile = CreateFile(tempFile, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
size_t flen = SetFilePointer(plFile, 0, NULL, FILE_END);
SetFilePointer(plFile, 0, NULL, FILE_BEGIN);
SAFEARRAY *bufferArray = SafeArrayCreateVector(VT_UI1, 0, flen);
void *data;
SafeArrayAccessData(bufferArray, &data);
DWORD bytesRead = 0;
ReadFile(plFile, data, flen, &bytesRead, 0);
SafeArrayUnaccessData(bufferArray);
CloseHandle(plFile);
DeleteFile(tempFile);
VariantInit(pvarResult);
V_VT(pvarResult) = VT_ARRAY | VT_UI1;
V_ARRAY(pvarResult) = bufferArray;
}
return S_OK;
}
return DISP_E_MEMBERNOTFOUND;
}
STDMETHODIMP PlaylistsCOM::QueryInterface(REFIID riid, PVOID *ppvObject)
{
if (!ppvObject)
return E_POINTER;
else if (IsEqualIID(riid, IID_IDispatch))
*ppvObject = (IDispatch *)this;
else if (IsEqualIID(riid, IID_IUnknown))
*ppvObject = this;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
ULONG PlaylistsCOM::AddRef(void)
{
return 0;
}
ULONG PlaylistsCOM::Release(void)
{
return 0;
}
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