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// file : tests/regex/driver.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <string>
#include <cassert>
#include <iostream>
#include <exception>
#include <libbutl/regex.hxx>
#include <libbutl/utility.hxx> // operator<<(ostream, exception)
using namespace std;
using namespace butl;
// Usage: argv[0] [-ffo] [-fnc] <string> <regex> <format>
//
// Perform substitution of matched substrings with formatted replacement
// strings using regex_replace_ex() function. If the string matches the regex
// then print the replacement to STDOUT and exit with zero code. Exit with
// code one if it doesn't match, and with code two on failure (print error
// description to STDERR).
//
// -ffo
// Use format_first_only replacement flag.
//
// -fnc
// Use format_no_copy replacement flag.
//
int
main (int argc, const char* argv[])
try
{
regex_constants::match_flag_type fl (regex_constants::match_default);
int i (1);
for (; i != argc; ++i)
{
string op (argv[i]);
if (op == "-ffo")
fl |= regex_constants::format_first_only;
else if (op == "-fnc")
fl |= regex_constants::format_no_copy;
else
break;
}
assert (i + 3 == argc);
string s (argv[i++]);
regex re (argv[i++]);
string fmt (argv[i]);
auto r (regex_replace_ex (s, re, fmt, fl));
if (r.second)
cout << r.first << endl;
return r.second ? 0 : 1;
}
catch (const exception& e)
{
cerr << e << endl;
return 2;
}
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