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/*
Quickplot - an interactive 2D plotter
Copyright (C) 1998-2011 Lance Arsenault
This file is part of Quickplot.
Quickplot is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
Quickplot 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quickplot. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "get_opt.h"
#ifdef DMALLOC
# include "dmalloc.h"
#endif
char *get_opt(const char * const shorT,
const char * const lonG,
int argc, char **argv, int *i)
{
// check for form long=VALUE
size_t len = 0;
if(*i < argc)
{
char *str = (char *) argv[*i];
for(;*str && *str != '=';str++);
if(*str == '=')
{
len = (size_t) str - (size_t) argv[*i];
str++;
}
if(len && !strncmp(argv[*i],lonG,len)
&& *str != '\0')
{
(*i)++;
return str;
}
}
// check for -a VALUE or --long VALUE
if(((*i + 1) < argc) &&
(!strcmp(argv[*i],lonG) ||
(shorT && shorT[0] && !strcmp(argv[*i],shorT))))
{
(*i)++;
return (char *) argv[(*i)++];
}
if(!shorT || !shorT[0]) return 0;
// check for -aVALUE
len=strlen(shorT);
if( (*i < argc) && !strncmp(argv[*i],shorT,len)
&& argv[*i][len] != '\0')
return (char *) &(argv[(*i)++][len]);
return 0;
}
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