465 lines
11 KiB
C
465 lines
11 KiB
C
/* $NetBSD: print.c,v 1.51 2012/06/29 12:51:38 yamt Exp $ */
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/*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Michael Fischbein.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)print.c 8.5 (Berkeley) 7/28/94";
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#else
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__RCSID("$NetBSD: print.c,v 1.51 2012/06/29 12:51:38 yamt Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <errno.h>
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#include <fts.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <tzfile.h>
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#include <unistd.h>
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#include <util.h>
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#include "ls.h"
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#include "extern.h"
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extern int termwidth;
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static int printaname(FTSENT *, int, int);
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static void printlink(FTSENT *);
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static void printtime(time_t);
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static void printtotal(DISPLAY *dp);
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static int printtype(u_int);
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static time_t now;
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#define IS_NOPRINT(p) ((p)->fts_number == NO_PRINT)
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void
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printscol(DISPLAY *dp)
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{
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FTSENT *p;
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for (p = dp->list; p; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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(void)printaname(p, dp->s_inode, dp->s_block);
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(void)putchar('\n');
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}
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}
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void
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printlong(DISPLAY *dp)
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{
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struct stat *sp;
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FTSENT *p;
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NAMES *np;
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char buf[20], szbuf[5];
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now = time(NULL);
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printtotal(dp); /* "total: %u\n" */
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for (p = dp->list; p; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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sp = p->fts_statp;
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if (f_inode)
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(void)printf("%*lu ", dp->s_inode,
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(unsigned long)sp->st_ino);
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if (f_size) {
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if (f_humanize) {
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if ((humanize_number(szbuf, sizeof(szbuf),
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sp->st_blocks * S_BLKSIZE,
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"", HN_AUTOSCALE,
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(HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("%*s ", dp->s_block, szbuf);
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} else {
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(void)printf(f_commas ? "%'*llu " : "%*llu ",
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dp->s_block,
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(unsigned long long)howmany(sp->st_blocks,
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blocksize));
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}
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}
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(void)strmode(sp->st_mode, buf);
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np = p->fts_pointer;
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(void)printf("%s %*lu ", buf, dp->s_nlink,
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(unsigned long)sp->st_nlink);
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if (!f_grouponly)
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(void)printf("%-*s ", dp->s_user, np->user);
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(void)printf("%-*s ", dp->s_group, np->group);
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if (f_flags)
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(void)printf("%-*s ", dp->s_flags, np->flags);
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if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
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(void)printf("%*lld, %*lld ",
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dp->s_major, (long long)major(sp->st_rdev),
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dp->s_minor, (long long)minor(sp->st_rdev));
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else
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if (f_humanize) {
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if ((humanize_number(szbuf, sizeof(szbuf),
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sp->st_size, "", HN_AUTOSCALE,
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(HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("%*s ", dp->s_size, szbuf);
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} else {
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(void)printf(f_commas ? "%'*llu " : "%*llu ",
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dp->s_size, (unsigned long long)
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sp->st_size);
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}
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if (f_accesstime)
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printtime(sp->st_atime);
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else if (f_statustime)
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printtime(sp->st_ctime);
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else
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printtime(sp->st_mtime);
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if (f_octal || f_octal_escape)
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(void)safe_print(p->fts_name);
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else if (f_nonprint)
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(void)printescaped(p->fts_name);
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else
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(void)printf("%s", p->fts_name);
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if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
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(void)printtype(sp->st_mode);
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if (S_ISLNK(sp->st_mode))
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printlink(p);
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(void)putchar('\n');
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}
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}
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void
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printcol(DISPLAY *dp)
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{
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static FTSENT **array;
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static int lastentries = -1;
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FTSENT *p;
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int base, chcnt, col, colwidth, num;
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int numcols, numrows, row;
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colwidth = dp->maxlen;
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if (f_inode)
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colwidth += dp->s_inode + 1;
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if (f_size) {
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if (f_humanize)
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colwidth += dp->s_size + 1;
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else
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colwidth += dp->s_block + 1;
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}
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if (f_type || f_typedir)
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colwidth += 1;
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colwidth += 1;
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if (termwidth < 2 * colwidth) {
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printscol(dp);
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return;
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}
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/*
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* Have to do random access in the linked list -- build a table
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* of pointers.
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*/
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if (dp->entries > lastentries) {
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FTSENT **newarray;
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newarray = realloc(array, dp->entries * sizeof(FTSENT *));
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if (newarray == NULL) {
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warn(NULL);
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printscol(dp);
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return;
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}
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lastentries = dp->entries;
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array = newarray;
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}
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for (p = dp->list, num = 0; p; p = p->fts_link)
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if (p->fts_number != NO_PRINT)
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array[num++] = p;
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numcols = termwidth / colwidth;
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colwidth = termwidth / numcols; /* spread out if possible */
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numrows = num / numcols;
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if (num % numcols)
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++numrows;
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printtotal(dp); /* "total: %u\n" */
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for (row = 0; row < numrows; ++row) {
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for (base = row, chcnt = col = 0; col < numcols; ++col) {
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chcnt = printaname(array[base], dp->s_inode,
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f_humanize ? dp->s_size : dp->s_block);
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if ((base += numrows) >= num)
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break;
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while (chcnt++ < colwidth)
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(void)putchar(' ');
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}
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(void)putchar('\n');
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}
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}
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void
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printacol(DISPLAY *dp)
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{
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FTSENT *p;
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int chcnt, col, colwidth;
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int numcols;
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colwidth = dp->maxlen;
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if (f_inode)
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colwidth += dp->s_inode + 1;
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if (f_size) {
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if (f_humanize)
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colwidth += dp->s_size + 1;
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else
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colwidth += dp->s_block + 1;
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}
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if (f_type || f_typedir)
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colwidth += 1;
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colwidth += 1;
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if (termwidth < 2 * colwidth) {
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printscol(dp);
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return;
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}
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numcols = termwidth / colwidth;
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colwidth = termwidth / numcols; /* spread out if possible */
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printtotal(dp); /* "total: %u\n" */
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chcnt = col = 0;
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for (p = dp->list; p; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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if (col >= numcols) {
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chcnt = col = 0;
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(void)putchar('\n');
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}
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chcnt = printaname(p, dp->s_inode,
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f_humanize ? dp->s_size : dp->s_block);
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while (chcnt++ < colwidth)
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(void)putchar(' ');
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col++;
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}
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(void)putchar('\n');
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}
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void
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printstream(DISPLAY *dp)
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{
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FTSENT *p;
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int col;
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int extwidth;
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extwidth = 0;
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if (f_inode)
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extwidth += dp->s_inode + 1;
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if (f_size) {
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if (f_humanize)
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extwidth += dp->s_size + 1;
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else
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extwidth += dp->s_block + 1;
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}
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if (f_type)
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extwidth += 1;
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for (col = 0, p = dp->list; p != NULL; p = p->fts_link) {
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if (IS_NOPRINT(p))
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continue;
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if (col > 0) {
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(void)putchar(','), col++;
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if (col + 1 + extwidth + (int)p->fts_namelen >= termwidth)
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(void)putchar('\n'), col = 0;
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else
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(void)putchar(' '), col++;
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}
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col += printaname(p, dp->s_inode,
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f_humanize ? dp->s_size : dp->s_block);
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}
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(void)putchar('\n');
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}
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/*
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* print [inode] [size] name
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* return # of characters printed, no trailing characters.
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*/
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static int
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printaname(FTSENT *p, int inodefield, int sizefield)
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{
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struct stat *sp;
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int chcnt;
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char szbuf[5];
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sp = p->fts_statp;
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chcnt = 0;
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if (f_inode)
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chcnt += printf("%*lu ", inodefield, (unsigned long)sp->st_ino);
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if (f_size) {
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if (f_humanize) {
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if ((humanize_number(szbuf, sizeof(szbuf), sp->st_size,
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"", HN_AUTOSCALE,
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(HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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chcnt += printf("%*s ", sizefield, szbuf);
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} else {
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chcnt += printf(f_commas ? "%'*llu " : "%*llu ",
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sizefield, (unsigned long long)
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howmany(sp->st_blocks, blocksize));
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}
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}
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if (f_octal || f_octal_escape)
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chcnt += safe_print(p->fts_name);
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else if (f_nonprint)
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chcnt += printescaped(p->fts_name);
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else
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chcnt += printf("%s", p->fts_name);
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if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
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chcnt += printtype(sp->st_mode);
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return (chcnt);
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}
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static void
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printtime(time_t ftime)
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{
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int i;
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const char *longstring;
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if ((longstring = ctime(&ftime)) == NULL) {
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/* 012345678901234567890123 */
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longstring = "????????????????????????";
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}
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for (i = 4; i < 11; ++i)
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(void)putchar(longstring[i]);
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#define SIXMONTHS ((DAYSPERNYEAR / 2) * SECSPERDAY)
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if (f_sectime)
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for (i = 11; i < 24; i++)
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(void)putchar(longstring[i]);
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else if (ftime + SIXMONTHS > now && ftime - SIXMONTHS < now)
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for (i = 11; i < 16; ++i)
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(void)putchar(longstring[i]);
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else {
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(void)putchar(' ');
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for (i = 20; i < 24; ++i)
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(void)putchar(longstring[i]);
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}
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(void)putchar(' ');
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}
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/*
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* Display total used disk space in the form "total: %u\n".
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* Note: POSIX (IEEE Std 1003.1-2001) says this should be always in 512 blocks,
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* but we humanise it with -h, or separate it with commas with -M, and use 1024
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* with -k.
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*/
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static void
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printtotal(DISPLAY *dp)
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{
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char szbuf[5];
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if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) {
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if (f_humanize) {
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if ((humanize_number(szbuf, sizeof(szbuf), (int64_t)dp->stotal,
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"", HN_AUTOSCALE,
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(HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
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err(1, "humanize_number");
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(void)printf("total %s\n", szbuf);
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} else {
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(void)printf(f_commas ? "total %'llu\n" :
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"total %llu\n", (unsigned long long)
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howmany(dp->btotal, blocksize));
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}
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}
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}
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static int
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printtype(u_int mode)
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{
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switch (mode & S_IFMT) {
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case S_IFDIR:
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(void)putchar('/');
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return (1);
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case S_IFIFO:
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(void)putchar('|');
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return (1);
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case S_IFLNK:
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(void)putchar('@');
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return (1);
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case S_IFSOCK:
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(void)putchar('=');
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return (1);
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case S_IFWHT:
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(void)putchar('%');
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return (1);
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}
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if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
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(void)putchar('*');
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return (1);
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}
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return (0);
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}
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static void
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printlink(FTSENT *p)
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{
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int lnklen;
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char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
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if (p->fts_level == FTS_ROOTLEVEL)
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(void)snprintf(name, sizeof(name), "%s", p->fts_name);
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else
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(void)snprintf(name, sizeof(name),
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"%s/%s", p->fts_parent->fts_accpath, p->fts_name);
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if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
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(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
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return;
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}
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path[lnklen] = '\0';
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(void)printf(" -> ");
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if (f_octal || f_octal_escape)
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(void)safe_print(path);
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else if (f_nonprint)
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(void)printescaped(path);
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else
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(void)printf("%s", path);
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}
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