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fmt.c revision 1.4 
      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 		dst += strlen(dst);
     72 		*dst++ = ' ';
     73 	}
     74 	*dst = '\0';
     75 	return (buf);
     76 }
     77 
     78 static char *
     79 cmdpart(arg0)
     80 	char *arg0;
     81 {
     82 	char *cp;
     83 
     84 	return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0);
     85 }
     86 
     87 char *
     88 fmt_argv(argv, cmd, maxlen)
     89 	char **argv;
     90 	char *cmd;
     91 	int maxlen;
     92 {
     93 	int len;
     94 	char *ap, *cp;
     95 
     96 	if (argv == 0 || argv[0] == 0)
     97 		ap = "";
     98 	else
     99 		ap = shquote(argv);
    100 	len = strlen(ap);
    101 	if ((cp = malloc(len + maxlen + 3)) == NULL)
    102 		return (NULL);
    103 	if (ap[0] == '\0' || strncmp(cmdpart(argv[0]), cmd, maxlen) != 0)
    104 		sprintf(cp, "%s(%.*s)", ap, maxlen, cmd);
    105 	else {
    106 		bcopy(ap, cp, len);
    107 		cp[len - 1] = '\0';
    108 	}
    109 	return (cp);
    110 }
    111