fmt.c revision 99110
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1992, 1993, 1994 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 3. All advertising materials mentioning features or use of this software 141556Srgrimes * must display the following acknowledgement: 151556Srgrimes * This product includes software developed by the University of 161556Srgrimes * California, Berkeley and its contributors. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes */ 331556Srgrimes 3490143Smarkm#if 0 351556Srgrimes#ifndef lint 3636049Scharnierstatic char sccsid[] = "@(#)fmt.c 8.4 (Berkeley) 4/15/94"; 3736049Scharnier#endif 3890143Smarkm#endif 3999110Sobrien#include <sys/cdefs.h> 4099110Sobrien__FBSDID("$FreeBSD: head/bin/ps/fmt.c 99110 2002-06-30 05:15:05Z obrien $"); 411556Srgrimes 4241580Sbde#include <sys/types.h> 431556Srgrimes#include <sys/time.h> 441556Srgrimes#include <sys/resource.h> 4590143Smarkm 4641580Sbde#include <err.h> 4796053Sjmallett#include <limits.h> 481556Srgrimes#include <stdio.h> 491556Srgrimes#include <stdlib.h> 501556Srgrimes#include <string.h> 5137027Sjkoshy#include <unistd.h> 521556Srgrimes#include <vis.h> 5390143Smarkm 541556Srgrimes#include "ps.h" 551556Srgrimes 5690110Simpstatic char *cmdpart(char *); 5790110Simpstatic char *shquote(char **); 581556Srgrimes 591556Srgrimesstatic char * 6090110Simpshquote(char **argv) 611556Srgrimes{ 6296053Sjmallett long arg_max; 6396053Sjmallett static size_t buf_size; 6490143Smarkm size_t len; 651556Srgrimes char **p, *dst, *src; 6637027Sjkoshy static char *buf = NULL; 671556Srgrimes 6837027Sjkoshy if (buf == NULL) { 6937027Sjkoshy if ((arg_max = sysconf(_SC_ARG_MAX)) == -1) 7037027Sjkoshy errx(1, "sysconf _SC_ARG_MAX failed"); 7197978Sjmallett if (arg_max >= LONG_MAX / 4 || 4 * arg_max + 1 > SIZE_MAX) 7296053Sjmallett errx(1, "sysconf _SC_ARG_MAX preposterously large"); 7396053Sjmallett buf_size = 4 * arg_max + 1; 7496053Sjmallett if ((buf = malloc(buf_size)) == NULL) 7596053Sjmallett errx(1, "malloc failed"); 7637027Sjkoshy } 7737027Sjkoshy 7897845Sjmallett if (*argv == NULL) { 7997845Sjmallett buf[0] = '\0'; 801556Srgrimes return (buf); 811556Srgrimes } 821556Srgrimes dst = buf; 8397845Sjmallett for (p = argv; (src = *p++) != NULL; ) { 8497845Sjmallett if (*src == '\0') 851556Srgrimes continue; 8696053Sjmallett len = (buf_size - 1 - (dst - buf)) / 4; 8789575Smikeh strvisx(dst, src, strlen(src) < len ? strlen(src) : len, 8889575Smikeh VIS_NL | VIS_CSTYLE); 8997845Sjmallett while (*dst != '\0') 901556Srgrimes dst++; 9196053Sjmallett if ((buf_size - 1 - (dst - buf)) / 4 > 0) 9289575Smikeh *dst++ = ' '; 931556Srgrimes } 946971Sdg /* Chop off trailing space */ 9589575Smikeh if (dst != buf && dst[-1] == ' ') 966971Sdg dst--; 971556Srgrimes *dst = '\0'; 981556Srgrimes return (buf); 991556Srgrimes} 1001556Srgrimes 1011556Srgrimesstatic char * 10290110Simpcmdpart(char *arg0) 1031556Srgrimes{ 1041556Srgrimes char *cp; 1051556Srgrimes 1061556Srgrimes return ((cp = strrchr(arg0, '/')) != NULL ? cp + 1 : arg0); 1071556Srgrimes} 1081556Srgrimes 10990143Smarkmconst char * 11090143Smarkmfmt_argv(char **argv, char *cmd, size_t maxlen) 1111556Srgrimes{ 11290143Smarkm size_t len; 1131556Srgrimes char *ap, *cp; 1141556Srgrimes 11590143Smarkm if (argv == NULL || argv[0] == NULL) { 1161556Srgrimes if (cmd == NULL) 1171556Srgrimes return (""); 1181556Srgrimes ap = NULL; 1191556Srgrimes len = maxlen + 3; 1201556Srgrimes } else { 1211556Srgrimes ap = shquote(argv); 1221556Srgrimes len = strlen(ap) + maxlen + 4; 1231556Srgrimes } 12490143Smarkm cp = malloc(len); 12590143Smarkm if (cp == NULL) 12697847Sjmallett errx(1, "malloc failed"); 1271556Srgrimes if (ap == NULL) 12890143Smarkm sprintf(cp, " (%.*s)", (int)maxlen, cmd); 1291556Srgrimes else if (strncmp(cmdpart(argv[0]), cmd, maxlen) != 0) 13090143Smarkm sprintf(cp, "%s (%.*s)", ap, (int)maxlen, cmd); 1311556Srgrimes else 1321556Srgrimes (void) strcpy(cp, ap); 1331556Srgrimes return (cp); 1341556Srgrimes} 135