Mega Code Archive
How to get the name of the local file that is being cached
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Title: How to get the name of the local file that is being cached
uses
WiniNet;
// Get Cached File Path From URL
function GetCachedFileFromURL(strUL: string; var strLocalFile: string): boolean;
var
lpEntryInfo: PInternetCacheEntryInfo;
hCacheDir: LongWord;
dwEntrySize: LongWord;
dwLastError: LongWord;
begin
Result := False;
dwEntrySize := 0;
// Begin the enumeration of the Internet cache.
FindFirstUrlCacheEntry(nil, TInternetCacheEntryInfo(nil^), dwEntrySize);
GetMem(lpEntryInfo, dwEntrySize);
hCacheDir := FindFirstUrlCacheEntry(nil, lpEntryInfo^, dwEntrySize);
if (hCacheDir 0) and (strUL = lpEntryInfo^.lpszSourceUrlName) then
begin
strLocalFile := lpEntryInfo^.lpszLocalFileName;
Result := True;
end;
FreeMem(lpEntryInfo);
if Result = False then
repeat
dwEntrySize := 0;
// Retrieves the next cache group in a cache group enumeration
FindNextUrlCacheEntry(hCacheDir, TInternetCacheEntryInfo(nil^), dwEntrySize);
dwLastError := GetLastError();
if (GetLastError = ERROR_INSUFFICIENT_BUFFER) then
begin
GetMem(lpEntryInfo, dwEntrySize);
if (FindNextUrlCacheEntry(hCacheDir, lpEntryInfo^, dwEntrySize)) then
begin
if strUL = lpEntryInfo^.lpszSourceUrlName then
begin
strLocalFile := lpEntryInfo^.lpszLocalFileName;
Result := True;
Break;
end;
end;
FreeMem(lpEntryInfo);
end;
until (dwLastError = ERROR_NO_MORE_ITEMS);
end;
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