CMake/Source/CPack/cmCPackTGZGenerator.cxx

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmCPackTGZGenerator.h"
#include "cmake.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmSystemTools.h"
#include "cmMakefile.h"
#include "cmGeneratedFileStream.h"
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#include "cmCPackLog.h"
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#include <cmsys/SystemTools.hxx>
#include <cmzlib/zutil.h>
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#include <libtar/libtar.h>
#include <memory> // auto_ptr
#include <fcntl.h>
#include <errno.h>
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//----------------------------------------------------------------------
class cmCPackTGZGeneratorForward
{
public:
static int GenerateHeader(cmCPackTGZGenerator* gg, std::ostream* os)
{
return gg->GenerateHeader(os);
}
};
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//----------------------------------------------------------------------
cmCPackTGZGenerator::cmCPackTGZGenerator()
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{
}
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//----------------------------------------------------------------------
cmCPackTGZGenerator::~cmCPackTGZGenerator()
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{
}
static const size_t cmCPackTGZ_Data_BlockSize = 16384;
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//----------------------------------------------------------------------
class cmCPackTGZ_Data
{
public:
cmCPackTGZ_Data(cmCPackTGZGenerator* gen) :
Name(0), OutputStream(0), Generator(gen), m_CompressionLevel(Z_DEFAULT_COMPRESSION) {}
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const char *Name;
std::ostream* OutputStream;
cmCPackTGZGenerator* Generator;
char m_CompressedBuffer[cmCPackTGZ_Data_BlockSize];
int m_CompressionLevel;
z_stream m_ZLibStream;
uLong m_CRC;
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};
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//----------------------------------------------------------------------
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extern "C" {
int cmCPackTGZ_Data_Open(void *client_data, const char* name, int oflags, mode_t mode);
ssize_t cmCPackTGZ_Data_Write(void *client_data, void *buff, size_t n);
int cmCPackTGZ_Data_Close(void *client_data);
}
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//----------------------------------------------------------------------
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int cmCPackTGZ_Data_Open(void *client_data, const char* pathname, int, mode_t)
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{
cmCPackTGZ_Data *mydata = (cmCPackTGZ_Data*)client_data;
mydata->m_ZLibStream.zalloc = Z_NULL;
mydata->m_ZLibStream.zfree = Z_NULL;
mydata->m_ZLibStream.opaque = Z_NULL;
int strategy = Z_DEFAULT_STRATEGY;
if ( deflateInit2(&mydata->m_ZLibStream, mydata->m_CompressionLevel,
Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, strategy) != Z_OK )
{
return -1;
}
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cmGeneratedFileStream* gf = new cmGeneratedFileStream(pathname);
mydata->OutputStream = gf;
if ( !*mydata->OutputStream )
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{
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return -1;
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}
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gf->SetCompression(false);
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if ( !cmCPackTGZGeneratorForward::GenerateHeader(mydata->Generator,gf))
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{
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return -1;
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}
mydata->m_CRC = crc32(0L, Z_NULL, 0);
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return 0;
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}
//----------------------------------------------------------------------
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ssize_t cmCPackTGZ_Data_Write(void *client_data, void *buff, size_t n)
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{
cmCPackTGZ_Data *mydata = (cmCPackTGZ_Data*)client_data;
mydata->m_ZLibStream.avail_in = n;
mydata->m_ZLibStream.next_in = reinterpret_cast<Bytef*>(buff);
do {
mydata->m_ZLibStream.avail_out = cmCPackTGZ_Data_BlockSize;
mydata->m_ZLibStream.next_out = reinterpret_cast<Bytef*>(mydata->m_CompressedBuffer);
int ret = deflate(&mydata->m_ZLibStream, (n?Z_NO_FLUSH:Z_FINISH)); /* no bad return value */
assert(ret != Z_STREAM_ERROR); /* state not clobbered */
size_t compressedSize = cmCPackTGZ_Data_BlockSize - mydata->m_ZLibStream.avail_out;
mydata->OutputStream->write(reinterpret_cast<const char*>(mydata->m_CompressedBuffer), compressedSize);
} while ( mydata->m_ZLibStream.avail_out == 0 );
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if ( !*mydata->OutputStream )
{
return 0;
}
if ( n )
{
mydata->m_CRC = crc32(mydata->m_CRC, reinterpret_cast<Bytef *>(buff), n);
}
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return n;
}
//----------------------------------------------------------------------
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int cmCPackTGZ_Data_Close(void *client_data)
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{
cmCPackTGZ_Data *mydata = (cmCPackTGZ_Data*)client_data;
cmCPackTGZ_Data_Write(client_data, 0, 0);
char buffer[8];
int n;
uLong x = mydata->m_CRC;
for (n = 0; n < 4; n++) {
buffer[n] = (int)(x & 0xff);
x >>= 8;
}
x = mydata->m_ZLibStream.total_in;
for (n = 0; n < 4; n++) {
buffer[n+4] = (int)(x & 0xff);
x >>= 8;
}
mydata->OutputStream->write(buffer, 8);
(void)deflateEnd(&mydata->m_ZLibStream);
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delete mydata->OutputStream;
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mydata->OutputStream = 0;
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return (0);
}
//----------------------------------------------------------------------
int cmCPackTGZGenerator::CompressFiles(const char* outFileName, const char* toplevel,
const std::vector<std::string>& files)
{
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cmCPackLogger(cmCPackLog::LOG_DEBUG, "Toplevel: " << toplevel << std::endl);
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cmCPackTGZ_Data mydata(this);
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TAR *t;
char buf[TAR_MAXPATHLEN];
char pathname[TAR_MAXPATHLEN];
tartype_t gztype = {
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(openfunc_t)cmCPackTGZ_Data_Open,
(closefunc_t)cmCPackTGZ_Data_Close,
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(readfunc_t)0,
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(writefunc_t)cmCPackTGZ_Data_Write,
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&mydata
};
// Ok, this libtar is not const safe. for now use auto_ptr hack
char* realName = new char[ strlen(outFileName) + 1 ];
std::auto_ptr<char> realNamePtr(realName);
strcpy(realName, outFileName);
int flags = O_WRONLY | O_CREAT;
if (tar_open(&t, realName,
&gztype,
flags, 0644,
(m_GeneratorVerbose?TAR_VERBOSE:0)
| 0) == -1)
{
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cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem with tar_open(): " << strerror(errno) << std::endl);
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return 0;
}
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std::vector<std::string>::const_iterator fileIt;
for ( fileIt = files.begin(); fileIt != files.end(); ++ fileIt )
{
std::string rp = cmSystemTools::RelativePath(toplevel, fileIt->c_str());
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strncpy(pathname, fileIt->c_str(), sizeof(pathname));
pathname[sizeof(pathname)-1] = 0;
strncpy(buf, rp.c_str(), sizeof(buf));
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buf[sizeof(buf)-1] = 0;
if (tar_append_tree(t, pathname, buf) != 0)
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{
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cmCPackLogger(cmCPackLog::LOG_ERROR,
"Problem with tar_append_tree(\"" << buf << "\", \"" << pathname << "\"): "
<< strerror(errno) << std::endl);
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tar_close(t);
return 0;
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}
}
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if (tar_append_eof(t) != 0)
{
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cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem with tar_append_eof(): " << strerror(errno) << std::endl);
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tar_close(t);
return 0;
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}
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if (tar_close(t) != 0)
{
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cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem with tar_close(): " << strerror(errno) << std::endl);
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return 0;
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}
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return 1;
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}
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//----------------------------------------------------------------------
int cmCPackTGZGenerator::GenerateHeader(std::ostream* os)
{
const int gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */
char header[10];
sprintf(header, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],
Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);
os->write(header, 10);
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return 1;
}