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/**
* argparser – command line argument parser library
*
* Copyright © 2013, 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "argparser.h"
/**
* Dummy trigger
*
* @param user_data User-data
* @param used The used option alternative
* @param standard The standard option alternative
*/
void args_noop_trigger(void* user_data, const char* used, const char* standard)
{
(void) user_data;
(void) used;
(void) standard;
}
/**
* Dummy trigger
*
* @param user_data User-data
* @param used The used option alternative
* @param standard The standard option alternative
* @param value The used value
*/
void args_noop_trigger_v(void* user_data, const char* used, const char* standard, char* value)
{
(void) user_data;
(void) used;
(void) standard;
(void) value;
}
/**
* Stickless evaluator to always evaluates to false
*
* @param user_data User-data
* @param argument The next argument
* @return Whether the argument can be used without being sticky
*/
int args_no_stickless(void* user_data, const char* value)
{
(void) user_data;
(void) value;
return 0;
}
/**
* Default stickless evaluator
*
* @param user_data User-data
* @param argument The next argument
* @return Whether the argument can be used without being sticky
*/
int args_default_stickless(void* user_data, const char* argument)
{
(void) user_data;
return (*argument != '-') && (*argument != '+');
}
/**
* Evalutator for end argument of variadic options that always evalutes to false
*
* @param user_data User-data
* @param value The next argument
* @return Whether the argument can be used without being sticky
*/
int args_no_variadic_end(void* user_data, char* value)
{
(void) user_data;
(void) value;
return 0;
}
/**
* The standard abbrevation expander
*
* @param argument The option that not recognised
* @param options All recognised options
* @param count The number of elements in `options`
* @return The only possible expansion, otherwise `null`
*/
const char* args_standard_abbreviations(const char* argument, const char** options, size_t count)
{
const char* rc = null;
size_t i;
for (i = 0; i < count; i++)
{
size_t match = 0;
const char* opt = *(options + i);
while (*(argument + match) && (*(opt + match) == *(argument + match)))
match++;
if (*(argument + match) == 0)
{
if (rc)
return null;
rc = opt;
}
}
return rc;
}
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