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// file : cult/cli/file-arguments.cxx
// author : Boris Kolpackov <boris@kolpackov.net>
// copyright : Copyright (c) 2005-2010 Boris Kolpackov
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <cstring> // strcmp
#include <fstream>
#include <cult/cli/file-arguments.hxx>
namespace Cult
{
namespace CLI
{
FileArguments::
~FileArguments ()
{
}
FileArguments::
FileArguments (Int argc, Char const* const* argv, Char const* op)
{
using namespace std;
if (argc == 0)
return;
args_.push_back (argv[0]);
Boolean skip (false);
for (Int i (1); i < argc; ++i)
{
if (!skip)
{
if (strcmp (argv[i], "--") == 0)
{
skip = true;
}
else if (strcmp (argv[i], op) == 0)
{
++i;
if (i >= argc)
throw OptionFile ("missing file name");
ifstream is (argv[i]);
if (!is.is_open ())
throw OptionFile (argv[i], "unable to open in read mode");
while (!is.eof ())
{
String line;
getline (is, line);
if (is.fail () && !is.eof ())
throw OptionFile (argv[i], "read failure");
Size size (line.size ());
// Trim the line from leading and trailing whitespaces.
//
if (size != 0)
{
const Char* f (line.data ());
const Char* l (f + size);
const Char* of (f);
while (f < l && (*f == ' ' || *f == '\t' || *f == '\r'))
++f;
--l;
const Char* ol (l);
while (l > f && (*l == ' ' || *l == '\t' || *l == '\r'))
--l;
if (f != of || l != ol)
line = f <= l ? String (f, l - f + 1) : String ();
}
if (line.empty () || line[0] == '#')
continue; // Ignore empty lines, those that start with #
Size pos (line.find (' '));
if (pos == String::npos)
args_.push_back (line);
else
{
Size size (line.size ());
args_.push_back (String (line, 0, pos));
// Skip leading whitespaces in the argument.
//
for (pos++; pos < size; pos++)
{
Char c (line[pos]);
if (c != ' ' && c != '\t' && c != '\r')
break;
}
args_.push_back (String (line, pos));
}
}
continue;
}
}
args_.push_back (argv[i]);
}
}
}
}
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