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/***********************************************************************
* args - Argument reading system
* Copyright (C) 1997-1998 Jon Anders Haugum
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*
* Author of args can be reached at:
* email: jonah@colargol.tihlde.hist.no
* www: http://www.colargol.tihlde.hist.no/~jonah/el/avrp.html
* Postal address: Jon Anders Haugum
* vre Mllenbergsgt 52
* 7014 Trondheim
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "misc.h"
#include "args.h"
struct args *alloc_args(int arg_count)
{
struct args *args;
args = malloc(sizeof(struct args));
if(args)
{
args->arg = malloc(sizeof(struct arg) * arg_count);
if(args->arg)
{
args->count = arg_count;
args->first_data = NULL;
return(args);
}
free(args);
}
printf("Error: Unable to allocate memory\n");
return(NULL);
}
int read_args(struct args *args, int argc, char *argv[])
{
int i, j, k, ok = True, i_old;
struct data_list **last_data, *data;
args->first_data = NULL;
last_data = &args->first_data;
for(i = 1; (i < argc) && ok; i++)
{
if(argv[i][0] == '-')
{
if(argv[i][1] == '-')
{
j = 0;
while((args->arg[j].longarg ? strcmp(&argv[i][2], args->arg[j].longarg) : True) && (j != args->count))
j++;
if(j == args->count)
{
printf("Error: Unknown option: %s\n", argv[i]);
ok = False;
}
else
{
switch(args->arg[j].type)
{
case ARGTYPE_STRING:
if((i + 1) == argc)
{
printf("Error: No argument supplied with option: %s\n", argv[i]);
ok = False;
}
else
args->arg[j].data = argv[++i];
break;
case ARGTYPE_BOOLEAN:
args->arg[j].data = (char *)True;
break;
case ARGTYPE_STRING_MULTI:
last_data = (struct data_list **)&args->arg[j].data;
break;
}
}
}
else
{
last_data = &args->first_data;
// ToDo: Sjekk for enkel -
for(k = 1, i_old = i; (argv[i][k] != '\0') && ok && (i == i_old); k++)
{
j = 0;
while((argv[i][k] != args->arg[j].letter) && (j != args->count))
j++;
if(j == args->count)
{
printf("Error: Unknown option: -%c\n", argv[i][k]);
ok = False;
}
else
{
switch(args->arg[j].type)
{
case ARGTYPE_STRING:
if(argv[i][k + 1] != '\0')
{
printf("Error: Option -%c must be followed by it's argument\n", argv[i][k]);
ok = False;
}
else
{
if((i + 1) == argc)
{
printf("Error: No argument supplied with option: -%c\n", argv[i][k]);
ok = False;
}
else
args->arg[j].data = argv[++i];
}
break;
case ARGTYPE_BOOLEAN:
args->arg[j].data = (char *)True;
break;
case ARGTYPE_STRING_MULTI:
last_data = (struct data_list **)&args->arg[j].data;
break;
}
}
}
}
}
else
{
while(*last_data) last_data = &((*last_data)->next);
data = malloc(sizeof(struct data_list));
if(data)
{
data->next = NULL;
data->data = argv[i];
*last_data = data;
last_data = &data->next;
}
else
{
printf("Error: Unable to allocate memory\n");
ok = False;
}
}
}
return(ok);
}
void free_args(struct args *args)
{
int i;
struct data_list *data, *temp;
for(data = args->first_data; data;)
{
temp = data;
data = data->next;
free(temp);
}
for(i = 0; i != args->count; i++)
if(args->arg[i].type == ARGTYPE_STRING_MULTI)
for(data = args->arg[i].data; data;)
{
temp = data;
data = data->next;
free(temp);
}
free(args);
}
void define_arg(struct args *args, int index, int type, char letter, char *longarg, void *def_value)
{
args->arg[index].type = type;
args->arg[index].letter = letter;
args->arg[index].longarg = longarg;
args->arg[index].data = def_value;
}
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