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///////////////////////////////////////////////////////////////////////////////
// BOSSA
//
// Copyright (c) 2011-2018, ShumaTech
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the <organization> nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
///////////////////////////////////////////////////////////////////////////////
#include <stdlib.h>
#include <getopt.h>
#include <string.h>
#include <assert.h>
#include <vector>
#include "CmdOpts.h"
CmdOpts::CmdOpts(int argc, char* argv[], int numOpts, Option* opts) :
_argc(argc), _argv(argv), _numOpts(numOpts), _opts(opts)
{
}
CmdOpts::~CmdOpts()
{
}
void
CmdOpts::usage(FILE* out)
{
int optIdx;
char name[40];
const char* start;
const char* end;
for (optIdx = 0; optIdx < _numOpts; optIdx++)
{
if (_opts[optIdx].arg.has == ArgOptional)
snprintf(name, sizeof(name), " -%c, --%s[=%s]",
_opts[optIdx].letter,
_opts[optIdx].name,
_opts[optIdx].arg.name);
else if (_opts[optIdx].arg.has == ArgRequired)
snprintf(name, sizeof(name), " -%c, --%s=%s",
_opts[optIdx].letter,
_opts[optIdx].name,
_opts[optIdx].arg.name);
else
snprintf(name, sizeof(name), " -%c, --%s",
_opts[optIdx].letter,
_opts[optIdx].name);
fprintf(out, "%-23s ", name);
start = _opts[optIdx].help;
while ((end = strchr(start, '\n')))
{
fwrite(start, end - start + 1, 1, out);
fprintf(out, "%24s", "");
start = end + 1;
}
fprintf(out, "%s\n", start);
}
}
int
CmdOpts::parse()
{
std::vector<option> long_opts(_numOpts + 1);
std::vector<char> optstring(_numOpts * 3 + 1);
char* optPtr = optstring.data();
int optIdx;
int rc;
for (optIdx = 0; optIdx < _numOpts; optIdx++)
{
*_opts[optIdx].present = false;
*optPtr++ = _opts[optIdx].letter;
long_opts[optIdx].name = _opts[optIdx].name;
switch (_opts[optIdx].arg.has)
{
default:
case ArgNone:
long_opts[optIdx].has_arg = no_argument;
break;
case ArgOptional:
long_opts[optIdx].has_arg = optional_argument;
*optPtr++ = ':';
*optPtr++ = ':';
break;
case ArgRequired:
long_opts[optIdx].has_arg = required_argument;
*optPtr++ = ':';
break;
}
long_opts[optIdx].flag = NULL;
long_opts[optIdx].val = 0;
}
memset(&long_opts[_numOpts], 0, sizeof(long_opts[_numOpts]));
*optPtr = '\0';
optIdx = 0;
while ((rc = getopt_long(_argc, _argv, optstring.data(), long_opts.data(), &optIdx)) != -1)
{
if (rc == '?')
return -1;
if (rc != 0)
optIdx = find(rc);
assert(optIdx >= 0 && optIdx < _numOpts);
*_opts[optIdx].present = true;
if (_opts[optIdx].arg.has != ArgNone && optarg)
{
switch (_opts[optIdx].arg.type)
{
case ArgInt:
*_opts[optIdx].arg.value.intPtr = strtol(optarg, NULL, 0);
break;
default:
case ArgString:
*_opts[optIdx].arg.value.strPtr = optarg;
break;
}
}
}
return optind;
}
int
CmdOpts::find(char letter)
{
int optIdx;
for (optIdx = 0; optIdx < _numOpts; optIdx++)
if (_opts[optIdx].letter == letter)
break;
return optIdx;
}