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 * @(#)fmt.c 8.4 (Berkeley) 4/15/94 34 * $FreeBSD: src/bin/ps/fmt.c,v 1.14.2.1 2002/03/16 01:15:11 mikeh Exp $ 35 */ 36 37 #include <sys/types.h> 38 #include <sys/queue.h> 39 #include <sys/time.h> 40 #include <sys/resource.h> 41 #include <err.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 #include <vis.h> 47 #include "ps.h" 48 49 static char *cmdpart (char *); 50 static char *shquote (char **); 51 52 /* 53 * XXX 54 * This is a stub until marc does the real one. 55 */ 56 static char * 57 shquote(char **argv) 58 { 59 static long arg_max = -1; 60 size_t len; 61 char **p, *dst, *src; 62 static char *buf = NULL; 63 64 if (buf == NULL) { 65 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1) 66 errx(1, "sysconf _SC_ARG_MAX failed"); 67 if ((buf = malloc((4 * arg_max) + 1)) == NULL) 68 errx(1, "malloc failed"); 69 } 70 71 if (*argv == NULL) { 72 buf[0] = 0; 73 return (buf); 74 } 75 dst = buf; 76 for (p = argv; (src = *p++) != NULL; ) { 77 if (*src == 0) 78 continue; 79 len = (4 * arg_max - (dst - buf)) / 4; 80 strvisx(dst, src, strlen(src) < len ? strlen(src) : len, 81 VIS_NL | VIS_CSTYLE); 82 while (*dst) 83 dst++; 84 if ((4 * arg_max - (dst - buf)) / 4 > 0) 85 *dst++ = ' '; 86 } 87 /* Chop off trailing space */ 88 if (dst != buf && dst[-1] == ' ') 89 dst--; 90 *dst = '\0'; 91 return (buf); 92 } 93 94 static char * 95 cmdpart(char *arg0) 96 { 97 char *cp; 98 99 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0); 100 } 101 102 const char * 103 fmt_argv(char **argv, char *cmd, int maxlen) 104 { 105 int len; 106 char *ap, *cp; 107 108 if (argv == NULL || argv[0] == NULL) { 109 if (cmd == NULL) 110 return (""); 111 ap = NULL; 112 len = maxlen + 3; 113 } else { 114 ap = shquote(argv); 115 len = strlen(ap) + maxlen + 4; 116 } 117 if ((cp = malloc(len)) == NULL) 118 return (NULL); 119 if (ap == NULL) 120 sprintf(cp, " (%.*s)", maxlen, cmd); 121 else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0) 122 sprintf(cp, "%s (%.*s)", ap, maxlen, cmd); 123 else 124 strcpy(cp, ap); 125 return (cp); 126 } 127