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fmt.c revision 1.1 
      1 /*-
      2  * Copyright (c) 1992, 1993, 1994
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)fmt.c	8.4 (Berkeley) 4/15/94";
     36 #endif /* not lint */
     37 
     38 #include <sys/param.h>
     39 #include <sys/time.h>
     40 #include <sys/resource.h>
     41 #include <ctype.h>
     42 #include <stdio.h>
     43 #include <stdlib.h>
     44 #include <string.h>
     45 #include <vis.h>
     46 #include "ps.h"
     47 
     48 static char *cmdpart __P((char *));
     49 static char *shquote __P((char **));
     50 
     51 /*
     52  * XXX
     53  * This is a stub until marc does the real one.
     54  */
     55 static char *
     56 shquote(argv)
     57 	char **argv;
     58 {
     59 	char **p, *dst, *src;
     60 	static char buf[4096];		/* XXX */
     61 
     62 	if (*argv == 0) {
     63 		buf[0] = 0;
     64 		return (buf);
     65 	}
     66 	dst = buf;
     67 	for (p = argv; (src = *p++) != 0; ) {
     68 		if (*src == 0)
     69 			continue;
     70 		strvis(dst, src, VIS_NL | VIS_CSTYLE);
     71 		while (*dst)
     72 			dst++;
     73 		*dst++ = ' ';
     74 	}
     75 	*dst = '\0';
     76 	return (buf);
     77 }
     78 
     79 static char *
     80 cmdpart(arg0)
     81 	char *arg0;
     82 {
     83 	char *cp;
     84 
     85 	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
     86 }
     87 
     88 char *
     89 fmt_argv(argv, cmd, maxlen)
     90 	char **argv;
     91 	char *cmd;
     92 	int maxlen;
     93 {
     94 	int len;
     95 	char *ap, *cp;
     96 
     97 	if (argv == 0 || argv[0] == 0) {
     98 		if (cmd == NULL)
     99 			return ("");
    100 		ap = NULL;
    101 		len = maxlen + 3;
    102 	} else {
    103 		ap = shquote(argv);
    104 		len = strlen(ap) + maxlen + 4;
    105 	}
    106 	if ((cp = malloc(len)) == NULL)
    107 		return (NULL);
    108 	if (ap == NULL)
    109 		sprintf(cp, "(%.*s)", maxlen, cmd);
    110 	else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
    111 		sprintf(cp, "%s (%.*s)", ap, maxlen, cmd);
    112 	else
    113 		(void) strcpy(cp, ap);
    114 	return (cp);
    115 }
    116