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/***************************************************************************
* S3m/Mod player by Daniel Marks (dmarks@ais.net)
* GUS support by David Jeske (jeske@uiuc.edu)
*
* (C) 1994,1995 By Daniel Marks and David Jeske
*
* While we retain the copyright to this code, this source code is FREE.
* You may use it in any way you wish, in any product you wish. You may
* NOT steal the copyright for this code from us.
*
* We respectfully ask that you email one of us, if possible, if you
* produce something significant with this code, or if you have any bug
* fixes to contribute. We also request that you give credit where
* credit is due if you include part of this code in a program of your own.
*
* Email: s3mod@uiuc.edu
* jeske@uiuc.edu
*
* See the associated README file for Thanks
***************************************************************************
*
* cmdline.c - commands for parsing command line input
*
*/
#include "config.h"
#include "cmdline.h"
char *str_parms=0;
char *flag_parms=0;
char *num_parms=0;
int t_argc;
char **t_argv;
char *null_string = "";
int parm_setup(int argc,char **argv,char *str_prms,char *flag_prms,
char *num_prms)
{
t_argc = argc;
t_argv = argv;
if (str_prms)
str_parms = str_prms;
else
str_parms = null_string;
if (flag_prms)
flag_parms = flag_prms;
else
flag_parms = null_string;
if (num_prms)
num_parms = num_prms;
else
num_parms = null_string;
return(0);
}
char *rnp_strrchr(char *in_string, char letter)
{
if (!in_string)
return (NULL);
while (*in_string)
if (*in_string == letter)
return (in_string);
else in_string++;
return (NULL);
}
int rnp_get_num(char **string, long int *number)
{
char ch;
char neg = 0;
long int num = 0;
int error_code = -1;
if (**string == '-')
{
(*string)++;
neg = 1;
}
if (**string == '0')
{
(*string)++;
ch = *(*string)++;
if (ch > 'Z') ch -= ' ';
if (ch == 'B')
{
while ((**string == '0') || (**string == '1'))
{
num = (num << 1) | (*(*string)++ & 0x01);
error_code = 0;
}
if (neg) num = -num;
*number = num;
return (error_code);
}
if (ch == 'O')
{
while ((**string >= '0') && (**string <= '7'))
{
error_code = 0;
num = (num << 3) | (*(*string)++ & 0x07);
}
if (neg) num = -num;
*number = num;
return (error_code);
}
if (ch == 'X')
{
while (ch = **string, ch = (ch>'Z') ? ch-(' '+48) : ch-48,
ch = (ch>9) ? ch-7 : ch, ((ch >= 0) && (ch <= 15)))
{
error_code = 0;
num = (num << 4) | ch;
(*string)++;
}
if (neg) num = -num;
*number = num;
return (error_code);
}
(*string) -= 2;
}
while ((**string >= '0') && (**string <= '9'))
{
error_code = 0;
num = (num * 10) + (*(*string)++ - 48);
}
if (neg) num = -num;
*number = num;
return (error_code);
}
/* My own favorite GETOPT substitute */
/* letter <= 32 means get non-flagged regular parameter # letter */
/* num_types = letters that take numerical parameters */
/* str_types = letters that take string parameters */
/* flag_types = letters that take no parameters */
/* str_value = returned string value */
/* num_value = returned numerical value */
/* argv/argc = parameter list / parameter count */
int read_next_parm(char letter,
char *num_types, char *str_types, char *flag_types,
char **str_value, long int *num_value,
int argc, char **argv)
{
int found = 0;
char *cparm;
char *str_parm;
long int val;
char ch;
argc--;
argv++;
while (argc > 0)
{
argc--;
cparm = *argv++;
if (*cparm == '-')
{
cparm++;
while (*cparm)
{
found = (((ch = *cparm) == letter) && (letter > 32)) ? 1 : 0;
cparm++;
if (rnp_strrchr(flag_types,ch))
{
if (found)
return 1;
}
if (rnp_strrchr(str_types,ch))
{
if (*cparm)
str_parm = cparm;
else
{
if (argc)
{
argc--;
str_parm = *argv;
if (str_parm)
{
if (*str_parm == '-')
str_parm = NULL;
else argv++;
}
} else str_parm = NULL;
}
while (*cparm) cparm++;
if (found)
{
if (!str_parm)
return (-1);
*str_value = str_parm;
return (1);
}
}
if (rnp_strrchr(num_types,ch))
{
if (*cparm)
str_parm = cparm;
else
{
if (argc)
{
argc--;
str_parm = *argv;
if (str_parm)
{
if (*str_parm == '-')
str_parm = NULL;
else argv++;
}
} else str_parm = NULL;
}
cparm++;
rnp_get_num(&cparm,&val);
if (found)
{
if (!str_parm)
return (-1);
if (rnp_get_num(&str_parm,num_value))
return (-1);
return (1);
}
}
}
} else
{
if (letter <= 32)
{
if (letter--,!(letter))
{
*str_value = cparm;
return (1);
}
}
}
}
if (letter <= 32)
{
*str_value = NULL;
return (0);
}
if (rnp_strrchr(flag_types,letter))
return (0);
if (rnp_strrchr(str_types,letter))
return (0);
if (rnp_strrchr(num_types,letter))
return (0);
return (-1);
}
int read_parm(char letter, char **str_value, long int *num_value)
{
if (read_next_parm(letter, num_parms, str_parms, flag_parms,
str_value, num_value, t_argc, t_argv) == 1)
return (1);
return (read_next_parm(letter+' ', num_parms, str_parms, flag_parms,
str_value, num_value, t_argc, t_argv) == 1);
}
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