Home | History | Annotate | Line # | Download | only in ls
print.c revision 1.29 
      1 /*	$NetBSD: print.c,v 1.29 2000/06/22 23:42:22 assar 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 1.29 2000/06/22 23:42:22 assar 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 __P((FTSENT *, int, int));
     68 static void	printlink __P((FTSENT *));
     69 static void	printtime __P((time_t));
     70 static int	printtype __P((u_int));
     71 
     72 static time_t	now;
     73 
     74 #define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
     75 
     76 void
     77 printscol(dp)
     78 	DISPLAY *dp;
     79 {
     80 	FTSENT *p;
     81 
     82 	for (p = dp->list; p; p = p->fts_link) {
     83 		if (IS_NOPRINT(p))
     84 			continue;
     85 		(void)printaname(p, dp->s_inode, dp->s_block);
     86 		(void)putchar('\n');
     87 	}
     88 }
     89 
     90 void
     91 printlong(dp)
     92 	DISPLAY *dp;
     93 {
     94 	struct stat *sp;
     95 	FTSENT *p;
     96 	NAMES *np;
     97 	char buf[20];
     98 
     99 	now = time(NULL);
    100 
    101 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    102 		(void)printf("total %llu\n",
    103 		    (long long)(howmany(dp->btotal, blocksize)));
    104 
    105 	for (p = dp->list; p; p = p->fts_link) {
    106 		if (IS_NOPRINT(p))
    107 			continue;
    108 		sp = p->fts_statp;
    109 		if (f_inode)
    110 			(void)printf("%*lu ", dp->s_inode,
    111 			    (unsigned long)sp->st_ino);
    112 		if (f_size)
    113 			(void)printf("%*llu ", dp->s_block,
    114 			    (long long)howmany(sp->st_blocks, blocksize));
    115 		(void)strmode(sp->st_mode, buf);
    116 		np = p->fts_pointer;
    117 		(void)printf("%s %*lu %-*s  %-*s  ", buf, dp->s_nlink,
    118 		    (unsigned long)sp->st_nlink, dp->s_user, np->user,
    119 		    dp->s_group, np->group);
    120 		if (f_flags)
    121 			(void)printf("%-*s ", dp->s_flags, np->flags);
    122 		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
    123 			(void)printf("%*u, %*u ",
    124 			    dp->s_major, major(sp->st_rdev), dp->s_minor,
    125 			    minor(sp->st_rdev));
    126 		else
    127 			(void)printf("%*llu ", dp->s_size,
    128 			    (long long)sp->st_size);
    129 		if (f_accesstime)
    130 			printtime(sp->st_atime);
    131 		else if (f_statustime)
    132 			printtime(sp->st_ctime);
    133 		else
    134 			printtime(sp->st_mtime);
    135 		if (f_nonprint)
    136 			(void)printescaped(p->fts_name);
    137 		else
    138 			(void)printf("%s", p->fts_name);
    139 
    140 		if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    141 			(void)printtype(sp->st_mode);
    142 		if (S_ISLNK(sp->st_mode))
    143 			printlink(p);
    144 		(void)putchar('\n');
    145 	}
    146 }
    147 
    148 void
    149 printcol(dp)
    150 	DISPLAY *dp;
    151 {
    152 	extern int termwidth;
    153 	static FTSENT **array;
    154 	static int lastentries = -1;
    155 	FTSENT *p;
    156 	int base, chcnt, col, colwidth, num;
    157 	int numcols, numrows, row;
    158 
    159 	colwidth = dp->maxlen;
    160 	if (f_inode)
    161 		colwidth += dp->s_inode + 1;
    162 	if (f_size)
    163 		colwidth += dp->s_block + 1;
    164 	if (f_type || f_typedir)
    165 		colwidth += 1;
    166 
    167 	colwidth += 1;
    168 
    169 	if (termwidth < 2 * colwidth) {
    170 		printscol(dp);
    171 		return;
    172 	}
    173 
    174 	/*
    175 	 * Have to do random access in the linked list -- build a table
    176 	 * of pointers.
    177 	 */
    178 	if (dp->entries > lastentries) {
    179 		lastentries = dp->entries;
    180 		if ((array =
    181 		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
    182 			warn(NULL);
    183 			printscol(dp);
    184 		}
    185 	}
    186 	for (p = dp->list, num = 0; p; p = p->fts_link)
    187 		if (p->fts_number != NO_PRINT)
    188 			array[num++] = p;
    189 
    190 	numcols = termwidth / colwidth;
    191 	colwidth = termwidth / numcols;		/* spread out if possible */
    192 	numrows = num / numcols;
    193 	if (num % numcols)
    194 		++numrows;
    195 
    196 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    197 		(void)printf("total %llu\n",
    198 		    (long long)(howmany(dp->btotal, blocksize)));
    199 	for (row = 0; row < numrows; ++row) {
    200 		for (base = row, chcnt = col = 0; col < numcols; ++col) {
    201 			chcnt = printaname(array[base], dp->s_inode,
    202 			    dp->s_block);
    203 			if ((base += numrows) >= num)
    204 				break;
    205 			while (chcnt++ < colwidth)
    206 				(void)putchar(' ');
    207 		}
    208 		(void)putchar('\n');
    209 	}
    210 }
    211 
    212 void
    213 printacol(dp)
    214 	DISPLAY *dp;
    215 {
    216 	extern int termwidth;
    217 	FTSENT *p;
    218 	int chcnt, col, colwidth;
    219 	int numcols;
    220 
    221 	colwidth = dp->maxlen;
    222 	if (f_inode)
    223 		colwidth += dp->s_inode + 1;
    224 	if (f_size)
    225 		colwidth += dp->s_block + 1;
    226 	if (f_type || f_typedir)
    227 		colwidth += 1;
    228 
    229 	colwidth += 1;
    230 
    231 	if (termwidth < 2 * colwidth) {
    232 		printscol(dp);
    233 		return;
    234 	}
    235 
    236 	numcols = termwidth / colwidth;
    237 	colwidth = termwidth / numcols;		/* spread out if possible */
    238 
    239 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    240 		(void)printf("total %llu\n",
    241 		    (long long)(howmany(dp->btotal, blocksize)));
    242 	chcnt = col = 0;
    243 	for (p = dp->list; p; p = p->fts_link) {
    244 		if (IS_NOPRINT(p))
    245 			continue;
    246 		if (col >= numcols) {
    247 			chcnt = col = 0;
    248 			(void)putchar('\n');
    249 		}
    250 		chcnt = printaname(p, dp->s_inode, dp->s_block);
    251 		while (chcnt++ < colwidth)
    252 			(void)putchar(' ');
    253 		col++;
    254 	}
    255 	(void)putchar('\n');
    256 }
    257 
    258 void
    259 printstream(dp)
    260 	DISPLAY *dp;
    261 {
    262 	extern int termwidth;
    263 	FTSENT *p;
    264 	int col;
    265 	int extwidth;
    266 
    267 	extwidth = 0;
    268 	if (f_inode)
    269 		extwidth += dp->s_inode + 1;
    270 	if (f_size)
    271 		extwidth += dp->s_block + 1;
    272 	if (f_type)
    273 		extwidth += 1;
    274 
    275 	for (col = 0, p = dp->list; p != NULL; p = p->fts_link) {
    276 		if (IS_NOPRINT(p))
    277 			continue;
    278 		if (col > 0) {
    279 			(void)putchar(','), col++;
    280 			if (col + 1 + extwidth + p->fts_namelen >= termwidth)
    281 				(void)putchar('\n'), col = 0;
    282 			else
    283 				(void)putchar(' '), col++;
    284 		}
    285 		col += printaname(p, dp->s_inode, dp->s_block);
    286 	}
    287 	(void)putchar('\n');
    288 }
    289 
    290 /*
    291  * print [inode] [size] name
    292  * return # of characters printed, no trailing characters.
    293  */
    294 static int
    295 printaname(p, inodefield, sizefield)
    296 	FTSENT *p;
    297 	int sizefield, inodefield;
    298 {
    299 	struct stat *sp;
    300 	int chcnt;
    301 
    302 	sp = p->fts_statp;
    303 	chcnt = 0;
    304 	if (f_inode)
    305 		chcnt += printf("%*lu ", inodefield, (unsigned long)sp->st_ino);
    306 	if (f_size)
    307 		chcnt += printf("%*llu ", sizefield,
    308 		    (long long)howmany(sp->st_blocks, blocksize));
    309 	if (f_nonprint)
    310 	    chcnt += printescaped(p->fts_name);
    311 	else
    312 	    chcnt += printf("%s", p->fts_name);
    313 	if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    314 		chcnt += printtype(sp->st_mode);
    315 	return (chcnt);
    316 }
    317 
    318 static void
    319 printtime(ftime)
    320 	time_t ftime;
    321 {
    322 	int i;
    323 	char *longstring;
    324 
    325 	longstring = ctime(&ftime);
    326 	for (i = 4; i < 11; ++i)
    327 		(void)putchar(longstring[i]);
    328 
    329 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
    330 	if (f_sectime)
    331 		for (i = 11; i < 24; i++)
    332 			(void)putchar(longstring[i]);
    333 	else if (ftime + SIXMONTHS > now && ftime - SIXMONTHS < now)
    334 		for (i = 11; i < 16; ++i)
    335 			(void)putchar(longstring[i]);
    336 	else {
    337 		(void)putchar(' ');
    338 		for (i = 20; i < 24; ++i)
    339 			(void)putchar(longstring[i]);
    340 	}
    341 	(void)putchar(' ');
    342 }
    343 
    344 static int
    345 printtype(mode)
    346 	u_int mode;
    347 {
    348 	switch (mode & S_IFMT) {
    349 	case S_IFDIR:
    350 		(void)putchar('/');
    351 		return (1);
    352 	case S_IFIFO:
    353 		(void)putchar('|');
    354 		return (1);
    355 	case S_IFLNK:
    356 		(void)putchar('@');
    357 		return (1);
    358 	case S_IFSOCK:
    359 		(void)putchar('=');
    360 		return (1);
    361 	case S_IFWHT:
    362 		(void)putchar('%');
    363 		return (1);
    364 	}
    365 	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
    366 		(void)putchar('*');
    367 		return (1);
    368 	}
    369 	return (0);
    370 }
    371 
    372 static void
    373 printlink(p)
    374 	FTSENT *p;
    375 {
    376 	int lnklen;
    377 	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
    378 
    379 	if (p->fts_level == FTS_ROOTLEVEL)
    380 		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
    381 	else
    382 		(void)snprintf(name, sizeof(name),
    383 		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
    384 	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
    385 		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
    386 		return;
    387 	}
    388 	path[lnklen] = '\0';
    389 	(void)printf(" -> ");
    390 	if (f_nonprint)
    391 		printescaped(path);
    392 	else
    393 		(void)printf("%s", path);
    394 }
    395