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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)fmt.c 8.4 (Berkeley) 4/15/94 30 * $FreeBSD: src/bin/ps/fmt.c,v 1.14.2.1 2002/03/16 01:15:11 mikeh Exp $ 31 */ 32 33 #include <sys/types.h> 34 #include <sys/queue.h> 35 #include <sys/time.h> 36 #include <sys/resource.h> 37 #include <err.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <vis.h> 43 #include "ps.h" 44 45 static char *cmdpart (char *); 46 static char *shquote (char **); 47 48 /* 49 * XXX 50 * This is a stub until marc does the real one. 51 */ 52 static char * 53 shquote(char **argv) 54 { 55 static long arg_max = -1; 56 size_t len; 57 char **p, *dst, *src; 58 static char *buf = NULL; 59 60 if (buf == NULL) { 61 if ((arg_max = sysconf(_SC_ARG_MAX)) == -1) 62 errx(1, "sysconf _SC_ARG_MAX failed"); 63 if ((buf = malloc((4 * arg_max) + 1)) == NULL) 64 errx(1, "malloc failed"); 65 } 66 67 if (*argv == NULL) { 68 buf[0] = 0; 69 return (buf); 70 } 71 dst = buf; 72 for (p = argv; (src = *p++) != NULL; ) { 73 if (*src == 0) 74 continue; 75 len = (4 * arg_max - (dst - buf)) / 4; 76 strvisx(dst, src, strlen(src) < len ? strlen(src) : len, 77 VIS_NL | VIS_CSTYLE); 78 while (*dst) 79 dst++; 80 if ((4 * arg_max - (dst - buf)) / 4 > 0) 81 *dst++ = ' '; 82 } 83 /* Chop off trailing space */ 84 if (dst != buf && dst[-1] == ' ') 85 dst--; 86 *dst = '\0'; 87 return (buf); 88 } 89 90 static char * 91 cmdpart(char *arg0) 92 { 93 char *cp; 94 95 return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0); 96 } 97 98 const char * 99 fmt_argv(char **argv, char *cmd, int maxlen) 100 { 101 int len; 102 char *ap, *cp; 103 104 if (argv == NULL || argv[0] == NULL) { 105 if (cmd == NULL) 106 return (""); 107 ap = NULL; 108 len = maxlen + 3; 109 } else { 110 ap = shquote(argv); 111 len = strlen(ap) + maxlen + 4; 112 } 113 if ((cp = malloc(len)) == NULL) 114 return (NULL); 115 if (ap == NULL) 116 sprintf(cp, "(%.*s)", maxlen, cmd); 117 else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0) 118 sprintf(cp, "%s (%.*s)", ap, maxlen, cmd); 119 else 120 strcpy(cp, ap); 121 return (cp); 122 } 123