Files
ThirdParty-6/ParaView-5.0.1/Utilities/ProcessXML/ProcessXML.cxx

315 lines
7.8 KiB
C++

/*=========================================================================
Program: ParaView
Module: ProcessXML.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.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 notice for more information.
=========================================================================*/
#include "vtkObject.h"
#include <string>
#include <vector>
#include <vtksys/SystemTools.hxx>
#include <vtksys/Base64.h>
#include <vtksys/RegularExpression.hxx>
#include <fstream>
#include <sstream>
#include <assert.h>
class Output
{
public:
Output()
{
this->MaxLen = 16000;
this->CurrentPosition = 0;
this->UseBase64Encoding = false;
}
~Output()
{
}
Output(const Output&){}
void operator=(const Output&){}
std::ostringstream Stream;
int MaxLen;
long CurrentPosition;
int Count;
std::string Prefix;
std::string Suffix;
bool UseBase64Encoding;
void PrintHeader(const char* title, const char* file)
{
this->Stream << endl
<< "// From file " << file << endl
<< "static const char* const " << this->Prefix << title << this->Suffix << this->Count
<< " =" << endl;
this->CurrentPosition = this->Stream.tellp();
}
void CheckSplit(const char* title, const char* file, int force=0)
{
if ( (static_cast<long>(this->Stream.tellp()) - this->CurrentPosition) > this->MaxLen ||
force )
{
this->Count ++;
this->Stream << ";" << endl;
this->PrintHeader(title, file);
}
}
int ProcessFile(const char* file, const char* title)
{
std::ifstream ifs(file,
this->UseBase64Encoding? (std::ifstream::in |
std::ifstream::binary) : std::ifstream::in);
if ( !ifs )
{
cout << "Canot open file: " << file << endl;
return 0;
}
if (this->UseBase64Encoding)
{
ifs.seekg(0, std::ios::end);
size_t length = ifs.tellg();
ifs.seekg(0, std::ios::beg);
unsigned char* buffer = new unsigned char[length];
ifs.read(reinterpret_cast<char*>(buffer), length);
ifs.close();
char* encoded_buffer = new char[static_cast<int>(1.5 * length + 8)];
size_t end = vtksysBase64_Encode(buffer,
static_cast<unsigned long>(length),
reinterpret_cast<unsigned char*>(encoded_buffer),
0);
encoded_buffer[end] = 0;
std::istringstream iss(encoded_buffer);
delete[] buffer;
delete[] encoded_buffer;
return this->ProcessFile(iss, file, title);
}
else
{
return this->ProcessFile(ifs, file, title);
}
}
bool ReadLine(std::istream& ifs, std::string &line)
{
if (!ifs)
{
return false;
}
if (this->UseBase64Encoding)
{
char buffer[81];
buffer[80] = 0;
ifs.read(buffer, 80);
size_t gcount = ifs.gcount();
buffer[gcount] = 0;
line = buffer;
return (gcount > 0);
}
else
{
return vtksys::SystemTools::GetLineFromStream(ifs, line);
}
}
int ProcessFile(std::istream &ifs, const char* file, const char* title)
{
int ch;
int in_ifdef = 0;
this->Count = 0;
this->PrintHeader(title, file);
this->Stream << "\"";
std::string line;
std::string::size_type cc;
vtksys::RegularExpression reIfDef("^[ \r\n\t]*#[ \r\n\t]*if");
vtksys::RegularExpression reElse("^[ \r\n\t]*#[ \r\n\t]*el(se|if)");
vtksys::RegularExpression reEndif("^[ \r\n\t]*#[ \r\n\t]*endif");
int res = 0;
while (this->ReadLine(ifs, line))
{
res ++;
int regex = 0;
int ifdef_line = 0;
if (!this->UseBase64Encoding)
{
if ( reIfDef.find(line) )
{
in_ifdef ++;
regex = 1;
ifdef_line = 1;
}
else if ( reElse.find(line) )
{
regex = 1;
}
else if ( reEndif.find(line) )
{
in_ifdef --;
regex = 1;
}
}
if ( regex )
{
assert (this->UseBase64Encoding == false);
this->Stream << "\\n\"" << endl;
if ( ifdef_line )
{
this->CheckSplit(title, file, 1);
}
this->Stream << line << endl;
if ( !ifdef_line )
{
this->CheckSplit(title, file);
}
this->Stream << "\"";
}
else
{
for ( cc = 0; cc < line.size(); cc ++ )
{
ch = line[cc];
if ( ch == '\\' )
{
this->Stream << "\\\\";
}
else if ( ch == '\"' )
{
this->Stream << "\\\"";
}
else
{
this->Stream << (unsigned char)ch;
}
}
this->Stream
<< (this->UseBase64Encoding? "\"" : "\\n\"") << endl;
if ( !in_ifdef )
{
this->CheckSplit(title, file);
}
this->Stream << "\"";
}
}
this->Stream << (this->UseBase64Encoding? "\";" : "\\n\";") << endl;
if ( !res )
{
return 0;
}
return this->Count+1;
}
};
int main(int argc, char* argv[])
{
if ( argc < 4 )
{
cerr << "Usage: " << argv[0]
<< " [-base64] <output-file> <prefix> <suffix> <getmethod> <modules>..."
<< endl;
return 1;
}
Output ot;
int argv_offset = 0;
if (strcmp(argv[1], "-base64") == 0)
{
ot.UseBase64Encoding = true;
argv_offset = 1;
}
std::string output = argv[argv_offset + 1];
std::string output_file_name =
vtksys::SystemTools::GetFilenameWithoutExtension(
output);
ot.Prefix = argv[argv_offset + 2];
ot.Suffix = argv[argv_offset + 3];
ot.Stream << "// Loadable modules" << endl
<< "//" << endl
<< "// Generated by " << argv[0] << endl
<< "//" << endl
<< "#ifndef __" << output_file_name << "_h" << endl
<< "#define __" << output_file_name << "_h" << endl
<< endl
<< "#include <string.h>" << endl
<< endl;
int cc;
for ( cc = 5; (cc + argv_offset) < argc; cc ++ )
{
std::string fname = argv[argv_offset + cc];
std::string moduleName =
vtksys::SystemTools::GetFilenameWithoutLastExtension(fname);
if (moduleName.size() == 0)
{
cerr << "Cannot extract module name from the file: " << argv[argv_offset + cc] << endl;
return 1;
}
cout << "-- Generate module: " << moduleName << endl;
int num = 0;
if ( (num = ot.ProcessFile(fname.c_str(), moduleName.c_str())) == 0 )
{
cout << "Problem generating header file from XML file: " << fname << endl;
return 1;
}
int kk;
std::ostringstream createstring;
std::ostringstream lenstr;
for ( kk = 0; kk < num; kk ++ )
{
lenstr << endl
<< " + strlen(" << ot.Prefix
<< moduleName << ot.Suffix << kk << ")";
createstring << " strcat(res, " << ot.Prefix << moduleName << ot.Suffix
<< kk << ");" << endl;
}
ot.Stream
<< "// Get single string" << endl
<< "char* " << ot.Prefix << moduleName << argv[argv_offset + 4]
<< "()" << endl
<< "{" << endl
<< " size_t len = ( 0"
<< lenstr.str()
<< " );" << endl
<< " char* res = new char[ len + 1];" << endl
<< " res[0] = 0;" << endl
<< createstring.str()
<< " return res;" << endl
<< "}" << endl << endl;
}
ot.Stream
<< endl << endl
<< "#endif" << endl;
FILE* fp = fopen(output.c_str(), "w");
if ( !fp )
{
cout << "Cannot open output file: " << output << endl;
return 1;
}
fprintf(fp, "%s", ot.Stream.str().c_str());
fclose(fp);
return 0;
}