File: cd.ccc

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/* cd.ccc -- Misosys C program to change Unix working directory on xtrs */
/* Copyright (c) 1998, Timothy Mann */
/* $Id: cd.ccc,v 1.3 2008/06/26 04:39:56 mann Exp $ */

/* This software may be copied, modified, and used for any purpose
 * without fee, provided that (1) the above copyright notice is
 * retained, and (2) modified versions are clearly marked as having
 * been modified, with the modifier's name and the date included.  */

#option redirect 0
#include "xtrsemt.h"
#include "xtrsemt.ccc"  /* could use separate compilation instead */

usage()
{
    fprintf(stderr, "usage: cd [-l] unixdir\n");
    exit(1);
}

#define ERRBUFSIZE 256
#define NAMEBUFSIZE 256

int main(argc, argv)
     int argc;
     char **argv;
{
    int ret, lower, i;
    char errbuf[ERRBUFSIZE];
    char namebuf[NAMEBUFSIZE];
    char *p, *q;

    if (argc < 2) {
	usage();
    }
    i = 1;
    if (argv[i][0] == '-') {
	if (tolower(argv[i][1]) != 'l') {
	    usage();
        }
	i++;
	lower = 1;
    } else {
	lower = 0;
    }
    if (argc - i != 1) {
	usage();
    }

    p = namebuf;
    q = argv[i];
    if (lower) {
	while (*q) {
	    if (*q == '[' && *(q+1)) {
		q++;
		*p++ = *q++;
	    } else if (isalpha(*q)) {
	        *p++ = tolower(*q++);
	    } else {
		*p++ = *q++;
 	    }
	}
    } else {
	while (*q) *p++ = *q++;
    }
    *p = '\000';

    ret = emt_chdir(namebuf);
    if (ret != 0) {
	emt_strerror(errno, errbuf, ERRBUFSIZE);
	fprintf(stderr, "%s: %s\n", namebuf, errbuf);
	exit(1);
    }
    exit(0);
}