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/*=========================================================================
Program: Visualization Toolkit
Module: vtkHashSource.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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 <string>
#include <fstream>
#include <iostream>
#include <vtksys/MD5.h>
#include <vtksys/SystemTools.hxx>
#include <vtksys/RegularExpression.hxx>
static std::string HashMD5(std::istream& in)
{
char hash[33];
vtksysMD5* hasher = vtksysMD5_New();
vtksysMD5_Initialize(hasher);
vtksys::RegularExpression key("\\$(Revision|Date|RCSfile):[^$]*\\$");
std::string line;
while(vtksys::SystemTools::GetLineFromStream(in, line))
{
// Remove CVS key values from the line (simulate -kk).
while(key.find(line))
{
std::string tmp = line.substr(0, key.start());
tmp += "$";
tmp += key.match(1);
tmp += "$";
tmp += line.substr(key.end());
line = tmp;
}
// Append the line and a newline.
vtksysMD5_Append(hasher, (unsigned char const*)line.c_str(), -1);
vtksysMD5_Append(hasher, (unsigned char const*)"\n", 1);
}
vtksysMD5_FinalizeHex(hasher, hash);
vtksysMD5_Delete(hasher);
hash[32] = 0;
return std::string(hash);
}
int main(int argc, char *argv[])
{
if(argc < 3)
{
std::cerr << "Usage: vtkHashSource input.cxx name [output.h]\n";
return 1;
}
const char* inFile = argv[1];
const char* name = argv[2];
const char* outFile = argc > 3? argv[3] : 0;
std::ifstream fin(inFile);
if(!fin)
{
std::cerr << "Unable to read \"" << inFile << "\"\n";
return 1;
}
std::string md5 = HashMD5(fin);
std::ostream* out = &std::cout;
std::ofstream fout;
if(outFile)
{
fout.open(outFile);
if(!fout)
{
std::cerr << "Unable to write \"" << outFile << "\"\n";
return 1;
}
out = &fout;
}
*out
<< "#ifndef " << name << "\n"
<< "# define " << name << " \"" << md5 << "\"\n"
<< "#endif\n";
return 0;
}
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