int
simpleCompress(elzma_file_format format, const unsigned char * inData,
size_t inLen, unsigned char ** outData,
size_t * outLen)
{
int rc = 0;
elzma_compress_handle hand;
/* allocate compression handle */
hand = elzma_compress_alloc();
assert(hand != NULL);
rc = elzma_compress_config(hand, ELZMA_LC_DEFAULT,
ELZMA_LP_DEFAULT, ELZMA_PB_DEFAULT,
5, (1 << 20) /* 1mb */,
format, inLen);
if (rc != ELZMA_E_OK) {
elzma_compress_free(&hand);
return rc;
}
/* now run the compression */
{
struct dataStream ds;
ds.inData = inData;
ds.inLen = inLen;
ds.outData = NULL;
ds.outLen = 0;
rc = elzma_compress_run(hand, inputCallback, (void *) &ds,
outputCallback, (void *) &ds,
NULL, NULL);
if (rc != ELZMA_E_OK) {
if (ds.outData != NULL) free(ds.outData);
elzma_compress_free(&hand);
return rc;
}
*outData = ds.outData;
*outLen = ds.outLen;
}
return rc;
}
///////////////////////////////////////////////////////////////////////////
// Packages the files into a binary package.
///////////////////////////////////////////////////////////////////////////
void Binpressor::Package()
{
if (m_descriptors.empty())
return;
std::cout << "Packaging File(s)..." << std::endl;
_UINT totalSize = 0;
_UINT headerSize = 0;
for (auto it = m_descriptors.begin(); it != m_descriptors.end(); ++it)
{
totalSize += atoi((*it)->size);
headerSize += NAME_BUFFER + EXT_BUFFER + SIZE_BUFFER;
}
std::ofstream fstream;
fstream.open("package.bin", std::fstream::out | std::fstream::binary);
if (fstream.is_open())
{
// Write header data
char majVersion[4];
memset(majVersion, 0, 4);
sprintf_s(majVersion, 4, "%i", MAJOR_VERSION);
char minVersion[4];
memset(minVersion, 0, 4);
sprintf_s(minVersion, 4, "%i", MINOR_VERSION);
char nameBuffer[8];
memset(nameBuffer, 0, 8);
sprintf_s(nameBuffer, 8, "%i", NAME_BUFFER);
char extBuffer[8];
memset(extBuffer, 0, 8);
sprintf_s(extBuffer, 8, "%i", EXT_BUFFER);
char sizeBuffer[8];
memset(sizeBuffer, 0, 8);
sprintf_s(sizeBuffer, 8, "%i", SIZE_BUFFER);
fstream.write(majVersion, 4);
fstream.write(minVersion, 4);
fstream.write(nameBuffer, 8);
fstream.write(extBuffer, 8);
fstream.write(sizeBuffer, 8);
auto it = m_descriptors.begin();
while (it != m_descriptors.end())
{
Descriptor* descriptor = *it;
_UINT totalWritten = 0;
fstream.write(descriptor->name, NAME_BUFFER);
fstream.write(descriptor->ext, EXT_BUFFER);
int oldSize = strtoul(descriptor->size, NULL, 0);
dataStream ds;
ds.inData = descriptor->data;
ds.inLen = strtoul(descriptor->size, NULL, 0);
ds.outData = NULL;
ds.outLen = 0;
std::cout << "\33\r[Compressing - 0%] " << descriptor->name << descriptor->ext;
elzma_compress_handle handle = elzma_compress_alloc();
progressStruct pCtx;
std::stringstream fName;
fName << descriptor->name << descriptor->ext;
pCtx.fileName = fName.str();
pCtx.totalSize = ds.inLen;
elzma_compress_run(handle, inputCallback, (void *) &ds,
outputCallback, (void *) &ds,
elzmaProgressFunc, &pCtx);
memset(descriptor->size, 0, SIZE_BUFFER);
sprintf_s(descriptor->size, SIZE_BUFFER, "%i", ds.outLen);
delete[] descriptor->data;
descriptor->data = new char[ds.outLen];
memcpy(descriptor->data, ds.outData, ds.outLen);
elzma_compress_free(&handle);
fstream.write(descriptor->size, SIZE_BUFFER);
_UINT fsize = strtoul(descriptor->size, NULL, 0);
std::streamoff startPos = fstream.tellp();
while (totalWritten < fsize)
{
_UINT bytesToWrite = WRITE_STEP;
if (totalWritten + bytesToWrite > fsize)
bytesToWrite = fsize - totalWritten;
fstream.seekp(startPos + totalWritten);
fstream.write(descriptor->data, bytesToWrite);
totalWritten += bytesToWrite;
std::cout << "\33\r[Writing - ";
std::cout << (_UINT)((float)totalWritten / (float)fsize * 100.0f) << "%] ";
std::cout << descriptor->name << descriptor->ext << " - " << oldSize << " -> " << ds.outLen;
}
std::cout << std::endl;
delete[] descriptor->data;
delete descriptor;
it = m_descriptors.erase(it);
}
fstream.close();
std::cout << std::endl;
std::cout << "Packaging complete." << std::endl << std::endl;
std::cout << "Data size: " << totalSize << " bytes." << std::endl;
std::cout << "Header size: " << headerSize << " bytes." << std::endl;
std::cout << "Total size: " << totalSize + headerSize << " bytes." << std::endl;
}
else
{
std::cout << "ERROR: Could not open file for writing:" << std::endl;
std::cout << "package.bin" << std::endl;
}
}