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print.c revision 1.30 
      1 /*	$NetBSD: print.c,v 1.30 2000/07/29 03:46:15 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Michael Fischbein.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 #ifndef lint
     41 #if 0
     42 static char sccsid[] = "@(#)print.c	8.5 (Berkeley) 7/28/94";
     43 #else
     44 __RCSID("$NetBSD: print.c,v 1.30 2000/07/29 03:46:15 lukem Exp $");
     45 #endif
     46 #endif /* not lint */
     47 
     48 #include <sys/param.h>
     49 #include <sys/stat.h>
     50 
     51 #include <err.h>
     52 #include <errno.h>
     53 #include <fts.h>
     54 #include <grp.h>
     55 #include <pwd.h>
     56 #include <stdio.h>
     57 #include <stdlib.h>
     58 #include <string.h>
     59 #include <time.h>
     60 #include <tzfile.h>
     61 #include <unistd.h>
     62 #include <utmp.h>
     63 
     64 #include "ls.h"
     65 #include "extern.h"
     66 
     67 static int	printaname(FTSENT *, int, int);
     68 static void	printlink(FTSENT *);
     69 static void	printtime(time_t);
     70 static int	printtype(u_int);
     71 
     72 static time_t	now;
     73 
     74 #define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
     75 
     76 void
     77 printscol(DISPLAY *dp)
     78 {
     79 	FTSENT *p;
     80 
     81 	for (p = dp->list; p; p = p->fts_link) {
     82 		if (IS_NOPRINT(p))
     83 			continue;
     84 		(void)printaname(p, dp->s_inode, dp->s_block);
     85 		(void)putchar('\n');
     86 	}
     87 }
     88 
     89 void
     90 printlong(DISPLAY *dp)
     91 {
     92 	struct stat *sp;
     93 	FTSENT *p;
     94 	NAMES *np;
     95 	char buf[20];
     96 
     97 	now = time(NULL);
     98 
     99 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    100 		(void)printf("total %llu\n",
    101 		    (long long)(howmany(dp->btotal, blocksize)));
    102 
    103 	for (p = dp->list; p; p = p->fts_link) {
    104 		if (IS_NOPRINT(p))
    105 			continue;
    106 		sp = p->fts_statp;
    107 		if (f_inode)
    108 			(void)printf("%*lu ", dp->s_inode,
    109 			    (unsigned long)sp->st_ino);
    110 		if (f_size)
    111 			(void)printf("%*llu ", dp->s_block,
    112 			    (long long)howmany(sp->st_blocks, blocksize));
    113 		(void)strmode(sp->st_mode, buf);
    114 		np = p->fts_pointer;
    115 		(void)printf("%s %*lu %-*s  %-*s  ", buf, dp->s_nlink,
    116 		    (unsigned long)sp->st_nlink, dp->s_user, np->user,
    117 		    dp->s_group, np->group);
    118 		if (f_flags)
    119 			(void)printf("%-*s ", dp->s_flags, np->flags);
    120 		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
    121 			(void)printf("%*u, %*u ",
    122 			    dp->s_major, major(sp->st_rdev), dp->s_minor,
    123 			    minor(sp->st_rdev));
    124 		else
    125 			(void)printf("%*llu ", dp->s_size,
    126 			    (long long)sp->st_size);
    127 		if (f_accesstime)
    128 			printtime(sp->st_atime);
    129 		else if (f_statustime)
    130 			printtime(sp->st_ctime);
    131 		else
    132 			printtime(sp->st_mtime);
    133 		if (f_nonprint)
    134 			(void)printescaped(p->fts_name);
    135 		else
    136 			(void)printf("%s", p->fts_name);
    137 
    138 		if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    139 			(void)printtype(sp->st_mode);
    140 		if (S_ISLNK(sp->st_mode))
    141 			printlink(p);
    142 		(void)putchar('\n');
    143 	}
    144 }
    145 
    146 void
    147 printcol(DISPLAY *dp)
    148 {
    149 	extern int termwidth;
    150 	static FTSENT **array;
    151 	static int lastentries = -1;
    152 	FTSENT *p;
    153 	int base, chcnt, col, colwidth, num;
    154 	int numcols, numrows, row;
    155 
    156 	colwidth = dp->maxlen;
    157 	if (f_inode)
    158 		colwidth += dp->s_inode + 1;
    159 	if (f_size)
    160 		colwidth += dp->s_block + 1;
    161 	if (f_type || f_typedir)
    162 		colwidth += 1;
    163 
    164 	colwidth += 1;
    165 
    166 	if (termwidth < 2 * colwidth) {
    167 		printscol(dp);
    168 		return;
    169 	}
    170 
    171 	/*
    172 	 * Have to do random access in the linked list -- build a table
    173 	 * of pointers.
    174 	 */
    175 	if (dp->entries > lastentries) {
    176 		lastentries = dp->entries;
    177 		if ((array =
    178 		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
    179 			warn(NULL);
    180 			printscol(dp);
    181 		}
    182 	}
    183 	for (p = dp->list, num = 0; p; p = p->fts_link)
    184 		if (p->fts_number != NO_PRINT)
    185 			array[num++] = p;
    186 
    187 	numcols = termwidth / colwidth;
    188 	colwidth = termwidth / numcols;		/* spread out if possible */
    189 	numrows = num / numcols;
    190 	if (num % numcols)
    191 		++numrows;
    192 
    193 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    194 		(void)printf("total %llu\n",
    195 		    (long long)(howmany(dp->btotal, blocksize)));
    196 	for (row = 0; row < numrows; ++row) {
    197 		for (base = row, chcnt = col = 0; col < numcols; ++col) {
    198 			chcnt = printaname(array[base], dp->s_inode,
    199 			    dp->s_block);
    200 			if ((base += numrows) >= num)
    201 				break;
    202 			while (chcnt++ < colwidth)
    203 				(void)putchar(' ');
    204 		}
    205 		(void)putchar('\n');
    206 	}
    207 }
    208 
    209 void
    210 printacol(DISPLAY *dp)
    211 {
    212 	extern int termwidth;
    213 	FTSENT *p;
    214 	int chcnt, col, colwidth;
    215 	int numcols;
    216 
    217 	colwidth = dp->maxlen;
    218 	if (f_inode)
    219 		colwidth += dp->s_inode + 1;
    220 	if (f_size)
    221 		colwidth += dp->s_block + 1;
    222 	if (f_type || f_typedir)
    223 		colwidth += 1;
    224 
    225 	colwidth += 1;
    226 
    227 	if (termwidth < 2 * colwidth) {
    228 		printscol(dp);
    229 		return;
    230 	}
    231 
    232 	numcols = termwidth / colwidth;
    233 	colwidth = termwidth / numcols;		/* spread out if possible */
    234 
    235 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    236 		(void)printf("total %llu\n",
    237 		    (long long)(howmany(dp->btotal, blocksize)));
    238 	chcnt = col = 0;
    239 	for (p = dp->list; p; p = p->fts_link) {
    240 		if (IS_NOPRINT(p))
    241 			continue;
    242 		if (col >= numcols) {
    243 			chcnt = col = 0;
    244 			(void)putchar('\n');
    245 		}
    246 		chcnt = printaname(p, dp->s_inode, dp->s_block);
    247 		while (chcnt++ < colwidth)
    248 			(void)putchar(' ');
    249 		col++;
    250 	}
    251 	(void)putchar('\n');
    252 }
    253 
    254 void
    255 printstream(DISPLAY *dp)
    256 {
    257 	extern int termwidth;
    258 	FTSENT *p;
    259 	int col;
    260 	int extwidth;
    261 
    262 	extwidth = 0;
    263 	if (f_inode)
    264 		extwidth += dp->s_inode + 1;
    265 	if (f_size)
    266 		extwidth += dp->s_block + 1;
    267 	if (f_type)
    268 		extwidth += 1;
    269 
    270 	for (col = 0, p = dp->list; p != NULL; p = p->fts_link) {
    271 		if (IS_NOPRINT(p))
    272 			continue;
    273 		if (col > 0) {
    274 			(void)putchar(','), col++;
    275 			if (col + 1 + extwidth + p->fts_namelen >= termwidth)
    276 				(void)putchar('\n'), col = 0;
    277 			else
    278 				(void)putchar(' '), col++;
    279 		}
    280 		col += printaname(p, dp->s_inode, dp->s_block);
    281 	}
    282 	(void)putchar('\n');
    283 }
    284 
    285 /*
    286  * print [inode] [size] name
    287  * return # of characters printed, no trailing characters.
    288  */
    289 static int
    290 printaname(FTSENT *p, int inodefield, int sizefield)
    291 {
    292 	struct stat *sp;
    293 	int chcnt;
    294 
    295 	sp = p->fts_statp;
    296 	chcnt = 0;
    297 	if (f_inode)
    298 		chcnt += printf("%*lu ", inodefield, (unsigned long)sp->st_ino);
    299 	if (f_size)
    300 		chcnt += printf("%*llu ", sizefield,
    301 		    (long long)howmany(sp->st_blocks, blocksize));
    302 	if (f_nonprint)
    303 	    chcnt += printescaped(p->fts_name);
    304 	else
    305 	    chcnt += printf("%s", p->fts_name);
    306 	if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    307 		chcnt += printtype(sp->st_mode);
    308 	return (chcnt);
    309 }
    310 
    311 static void
    312 printtime(time_t ftime)
    313 {
    314 	int i;
    315 	char *longstring;
    316 
    317 	longstring = ctime(&ftime);
    318 	for (i = 4; i < 11; ++i)
    319 		(void)putchar(longstring[i]);
    320 
    321 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
    322 	if (f_sectime)
    323 		for (i = 11; i < 24; i++)
    324 			(void)putchar(longstring[i]);
    325 	else if (ftime + SIXMONTHS > now && ftime - SIXMONTHS < now)
    326 		for (i = 11; i < 16; ++i)
    327 			(void)putchar(longstring[i]);
    328 	else {
    329 		(void)putchar(' ');
    330 		for (i = 20; i < 24; ++i)
    331 			(void)putchar(longstring[i]);
    332 	}
    333 	(void)putchar(' ');
    334 }
    335 
    336 static int
    337 printtype(u_int mode)
    338 {
    339 	switch (mode & S_IFMT) {
    340 	case S_IFDIR:
    341 		(void)putchar('/');
    342 		return (1);
    343 	case S_IFIFO:
    344 		(void)putchar('|');
    345 		return (1);
    346 	case S_IFLNK:
    347 		(void)putchar('@');
    348 		return (1);
    349 	case S_IFSOCK:
    350 		(void)putchar('=');
    351 		return (1);
    352 	case S_IFWHT:
    353 		(void)putchar('%');
    354 		return (1);
    355 	}
    356 	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
    357 		(void)putchar('*');
    358 		return (1);
    359 	}
    360 	return (0);
    361 }
    362 
    363 static void
    364 printlink(FTSENT *p)
    365 {
    366 	int lnklen;
    367 	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
    368 
    369 	if (p->fts_level == FTS_ROOTLEVEL)
    370 		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
    371 	else
    372 		(void)snprintf(name, sizeof(name),
    373 		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
    374 	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
    375 		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
    376 		return;
    377 	}
    378 	path[lnklen] = '\0';
    379 	(void)printf(" -> ");
    380 	if (f_nonprint)
    381 		printescaped(path);
    382 	else
    383 		(void)printf("%s", path);
    384 }
    385