static void array_realloc( array* arr, uint32 size ) {
if ( arr->alloc <= arr->size + size ) {
uint32 tmp = max32( 16, arr->alloc * 2 );
arr->data = (uint8*) realloc( arr->data, tmp );
if ( arr->data == NULL ) {
printf( "could not re-allocate array to %d bytes", tmp );
exit( -17 );
}
arr->alloc = tmp;
}
}
//-------------------------------------------------------------------------
nsresult
DataStruct::ReadCache(nsISupports** aData, uint32_t* aDataLen)
{
// if we don't have a cache filename we are out of luck
if (!mCacheFileName)
return NS_ERROR_FAILURE;
// get the path and file name
nsCOMPtr<nsIFile> cacheFile ( getter_AddRefs(GetFileSpec(mCacheFileName)) );
bool exists;
if ( cacheFile && NS_SUCCEEDED(cacheFile->Exists(&exists)) && exists ) {
// get the size of the file
int64_t fileSize;
int64_t max32(LL_INIT(0, 0xFFFFFFFF));
cacheFile->GetFileSize(&fileSize);
if (LL_CMP(fileSize, >, max32))
return NS_ERROR_OUT_OF_MEMORY;
uint32_t size;
LL_L2UI(size, fileSize);
// create new memory for the large clipboard data
nsAutoArrayPtr<char> data(new char[size]);
if ( !data )
return NS_ERROR_OUT_OF_MEMORY;
// now read it all in
nsCOMPtr<nsIInputStream> inStr;
NS_NewLocalFileInputStream( getter_AddRefs(inStr),
cacheFile);
if (!cacheFile) return NS_ERROR_FAILURE;
nsresult rv = inStr->Read(data, fileSize, aDataLen);
// make sure we got all the data ok
if (NS_SUCCEEDED(rv) && *aDataLen == size) {
nsPrimitiveHelpers::CreatePrimitiveForData ( mFlavor.get(), data, fileSize, aData );
return *aData ? NS_OK : NS_ERROR_FAILURE;
}
// zero the return params
*aData = nullptr;
*aDataLen = 0;
}
