Retro68/LaunchAPPL/Client/MakeExecutable.cc

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#include <string>
#include <iostream>
#include <fstream>
#include <boost/filesystem.hpp>
#include <stdlib.h>
#include "ResourceFile.h"
using std::string;
namespace fs = boost::filesystem;
void MakeExecutable(string fn)
{
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ResourceFile rsrcFile;
if(!rsrcFile.read(fn))
{
std::cerr << "Cannot read application file: " << fn << std::endl;
exit(1);
}
if(!rsrcFile.hasPlainDataFork())
{
std::cerr << "--make-executable can not be used with this data format.\n";
exit(1);
}
string headerString = "#!" RETRO68_PREFIX "/bin/LaunchAPPL\n";
bool hadShebang = false;
if(rsrcFile.data.size())
{
if(headerString.substr(2) == "#!")
{
string::size_type eol = headerString.find('\n');
if(eol != string::npos && eol >= 13 && eol < 4096)
{
if(headerString.substr(eol-11,11) == "/LaunchAPPL")
hadShebang = true;
}
}
if(!hadShebang)
{
std::cerr << "Unfortunately, the application already has a data fork.\n";
std::cerr << "LaunchAPPL --make-executable does not currently work for PowerPC apps.\n";
// TODO: if it's a PEF container, move it back a little and update cfrg
exit(1);
}
}
std::fstream(fn, std::ios::in | std::ios::out | std::ios::binary) << headerString;
fs::permissions(fs::path(fn), fs::owner_exe | fs::group_exe | fs::others_exe | fs::add_perms);
}