#include "util.h"#include "args.h"#ifndef __lintstatic const char rcsid[] ="$Id: args.c,v 1.2 2000/11/10 19:14:58 webb Exp $";#endifstatic int argc;static char **argv;char *argv0;/* ckargs  --  check that only certain parameters are set on the command line */void ckargs(const char *options, int argcx, char **argvx, int non_options){	int i;	argc = argcx;	argv = argvx;	argv0 = argv0 ? argv0 : argv[0];	for (i = non_options+1; i < argc; ++i)		if (argv[i][1] != '=')			fatalf("Improper command option: '%s'.", argv[i]);		else if (!strchr(options, argv[i][0]))			fatalf("Available options: %s\n", options);}/* get_argval  --------------------- get the value of a command-line argument */bool get_argval(int c, int *val_ptr){	int i;	ck_argc("get_argval");	for (i = 0; i < argc; ++i)		if (argv[i][0] == c && argv[i][1] == '=') {			*val_ptr = atoi(argv[i]+2);			return 1;		}	return 0;}/* get_fargval  -------------- get the float value of a command-line argument */bool get_fargval(int c, double *val_ptr){        int i;        ck_argc("get_fargval");        for (i = 0; i < argc; ++i)                if (argv[i][0] == c && argv[i][1] == '=') {                        *val_ptr = atof(argv[i]+2);                        return 1;                }        return 0;}bool get_cargval(int c, char **valp){        int i;        ck_argc("get_cargval");        for (i = 0; i < argc; ++i)                if (argv[i][0] == c && argv[i][1] == '=') {                        *valp = argv[i]+2;                        return 1;                }        return 0;}/* ck_argc - die if argc is unknown */void ck_argc(const char *proc_name){	if (argc == 0)		fatalf("Call ckargs() before %s.\n", proc_name);}void fprintf_argv(FILE* fp){	int i;	fprintf(fp, "%s", argv0);	for (i = 1; i < argc; ++i)		(void)fprintf(fp, " %s", argv[i]);}void get_argval_min(int c, int *v, int d, int min, const char *msg){	if (get_argval(c, v)) {		if (*v < min)			fatalf(msg, c);	} else {		*v = d;	}}	void get_argval_max(int c, int *v, int d, int max, const char *msg){	if (get_argval(c, v)) {		if (*v > max)			fatalf(msg, c);	} else {		*v = d;	}}void get_argval_nonneg(int ch, int *val, int dflt){	get_argval_min(ch, val, dflt, 0, "%c must be non-negative.");}void get_argval_pos(int ch, int *val, int dflt){	get_argval_min(ch, val, dflt, 1, "%c must be positive.");}