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#ifndef __UTIL_H
#define __UTIL_H
#include <string>
#include <vector>
#include <sstream>
#include <unistd.h>
using namespace std;
class Error : public exception
{
string err;
public:
Error(string _err) { err = _err; }
~Error() throw () { };
const char * what() const throw () { return err.c_str(); }
};
class UsageError : public Error
{
public:
UsageError(string _err) : Error(_err) { };
};
typedef vector<string> Strings;
/* The canonical system name, as returned by config.guess. */
extern string thisSystem;
/* The prefix of the Nix installation, and the environment variable
that can be used to override the default. */
extern string nixHomeDir;
extern string nixHomeDirEnvVar;
string absPath(string filename, string dir = "");
string dirOf(string s);
string baseNameOf(string s);
#endif /* !__UTIL_H */
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