bool SerializeAttachment(Grid& grid, TAttachment& attachment,
typename geometry_traits<TElem>::iterator iterBegin,
typename geometry_traits<TElem>::iterator iterEnd,
BinaryBuffer& out)
{
if(!grid.has_attachment<TElem>(attachment))
return false;
// copy data
Grid::AttachmentAccessor<TElem, TAttachment> aa(grid, attachment);
typedef typename TAttachment::ValueType ValueType;
// write a magic number at the beginning and at the end.
int magicNumber = 8304548;
out.write((char*)&magicNumber, sizeof(int));
//TODO: remove the following test code.
// test: write a number-value to check whether it is send correctly
/*
number tNum = 1247.001234;
out.write((char*)&tNum, sizeof(number));
*/
for(; iterBegin != iterEnd; ++iterBegin)
{
out.write((char*)&aa[*iterBegin], sizeof(ValueType));
}
out.write((char*)&magicNumber, sizeof(int));
return true;
}
void ZlibTest::testZlibCompressBinary()
{
bool isOk;
unsigned long length;
unsigned long num, num1 = 0, num2 = 1640;
std::string str, str1, str2, str3("hello");
BinaryBuffer compressBuffer;
unsigned long contentSize = 5 * DEF_SizeOfLong + str1.length() + str2.length() + str3.length();
CPPUNIT_ASSERT_MESSAGE("Bad binary buffer size", contentSize == 25);
{
size_t lgSize = DEF_SizeOfLong + DEF_SizeOfLong;
BinaryBuffer binaryBuffer;
char *buf = (char *)::malloc(lgSize);
char *pos = buf;
// Store some numbers
SetLgBuf(pos, num1);
pos += DEF_SizeOfLong;
SetLgBuf(pos, num2);
pos += DEF_SizeOfLong;
binaryBuffer.write(buf, lgSize);
// Store a string
length = (unsigned long)str1.length();
SetLgBuf(buf, length);
binaryBuffer.write(buf, DEF_SizeOfLong);
binaryBuffer.write(str1.c_str(), length);
// Store a string
length = (unsigned long)str2.length();
SetLgBuf(buf, length);
binaryBuffer.write(buf, DEF_SizeOfLong);
binaryBuffer.write(str2.c_str(), length);
// Store a string
length = (unsigned long)str3.length();
SetLgBuf(buf, length);
binaryBuffer.write(buf, DEF_SizeOfLong);
binaryBuffer.write(str3.c_str(), length);
// Zlib compression
length = (unsigned long)binaryBuffer.getOccupancy();
CPPUNIT_ASSERT_MESSAGE("Bad binary buffer occupancy", length == contentSize);
SetLgBuf(buf, length);
// Reset binary buffer
compressBuffer.reset();
compressBuffer.write(buf, DEF_SizeOfLong);
isOk = ZlibCompress(compressBuffer, (const char *)binaryBuffer.getBuffer(), length);
CPPUNIT_ASSERT_MESSAGE("Bad zlib binary compression", isOk);
::free(buf);
}
{
// Zlib deflate
const char *pos = static_cast<const char*>(compressBuffer.getBuffer());
size_t size = compressBuffer.getOccupancy();
CPPUNIT_ASSERT_MESSAGE("Bad compress buffer occupancy", size == 26);
length = GetLgBuf(pos);
pos += DEF_SizeOfLong;
CPPUNIT_ASSERT_MESSAGE("Bad binary buffer occupancy", length == contentSize);
char *uncompr = NULL;
isOk = ZlibDeflate(uncompr, length, (void *)pos, size - DEF_SizeOfLong);
CPPUNIT_ASSERT_MESSAGE("Bad zlib binary delate", isOk);
pos = uncompr;
// Get the numbers
num = GetLgBuf(pos);
pos += DEF_SizeOfLong;
CPPUNIT_ASSERT_MESSAGE("Bad number 1", num == num1);
num = GetLgBuf(pos);
pos += DEF_SizeOfLong;
CPPUNIT_ASSERT_MESSAGE("Bad number 2", num == num2);
// Get string
length = GetLgBuf(pos);
pos += DEF_SizeOfLong;
str.assign(pos, length);
pos += length;
CPPUNIT_ASSERT_MESSAGE("Bad string 1", str == str1);
// Get string
length = GetLgBuf(pos);
pos += DEF_SizeOfLong;
str.assign(pos, length);
pos += length;
CPPUNIT_ASSERT_MESSAGE("Bad string 2", str == str2);
// Get string
length = GetLgBuf(pos);
pos += DEF_SizeOfLong;
str.assign(pos, length);
pos += length;
CPPUNIT_ASSERT_MESSAGE("Bad string 3", str == str3);
::free(uncompr);
}
}
