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 * $DragonFly: src/bin/ps/fmt.c,v 1.7 2004/11/16 12:16:36 joerg Exp $ 36 */ 37 38 #include <sys/types.h> 39 #include <sys/queue.h> 40 #include <sys/time.h> 41 #include <sys/resource.h> 42 #include <err.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <vis.h> 48 #include "ps.h" 49 50 static char *cmdpart (char *); 51 static char *shquote (char **); 52 53 /* 54 * XXX 55 * This is a stub until marc does the real one. 56 */ 57 static char * 58 shquote(char **argv) 59 { 60 static long arg_max = -1; 61 size_t len; 62 char **p, *dst, *src; 63 static char *buf = NULL; 64 65 if (buf == NULL) { 66 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1) 67 errx(1, "sysconf _SC_ARG_MAX failed"); 68 if ((buf = malloc((4 * arg_max) + 1)) == NULL) 69 errx(1, "malloc failed"); 70 } 71 72 if (*argv == 0) { 73 buf[0] = 0; 74 return (buf); 75 } 76 dst = buf; 77 for (p = argv; (src = *p++) != 0; ) { 78 if (*src == 0) 79 continue; 80 len = (4 * arg_max - (dst - buf)) / 4; 81 strvisx(dst, src, strlen(src) < len ? strlen(src) : len, 82 VIS_NL | VIS_CSTYLE); 83 while (*dst) 84 dst++; 85 if ((4 * arg_max - (dst - buf)) / 4 > 0) 86 *dst++ = ' '; 87 } 88 /* Chop off trailing space */ 89 if (dst != buf && dst[-1] == ' ') 90 dst--; 91 *dst = '\0'; 92 return (buf); 93 } 94 95 static char * 96 cmdpart(char *arg0) 97 { 98 char *cp; 99 100 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0); 101 } 102 103 const char * 104 fmt_argv(char **argv, char *cmd, int maxlen) 105 { 106 int len; 107 char *ap, *cp; 108 109 if (argv == 0 || argv[0] == 0) { 110 if (cmd == NULL) 111 return (""); 112 ap = NULL; 113 len = maxlen + 3; 114 } else { 115 ap = shquote(argv); 116 len = strlen(ap) + maxlen + 4; 117 } 118 if ((cp = malloc(len)) == NULL) 119 return (NULL); 120 if (ap == NULL) 121 sprintf(cp, " (%.*s)", maxlen, cmd); 122 else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0) 123 sprintf(cp, "%s (%.*s)", ap, maxlen, cmd); 124 else 125 strcpy(cp, ap); 126 return (cp); 127 } 128