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print.c revision 1.34 
      1 /*	$NetBSD: print.c,v 1.34 2003/05/07 13:00:24 grant 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 1.34 2003/05/07 13:00:24 grant 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 
     63 #include "ls.h"
     64 #include "extern.h"
     65 
     66 extern int termwidth;
     67 
     68 static int	printaname(FTSENT *, int, int);
     69 static void	printlink(FTSENT *);
     70 static void	printtime(time_t);
     71 static int	printtype(u_int);
     72 
     73 static time_t	now;
     74 
     75 #define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
     76 
     77 void
     78 printscol(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(DISPLAY *dp)
     92 {
     93 	struct stat *sp;
     94 	FTSENT *p;
     95 	NAMES *np;
     96 	char buf[20];
     97 
     98 	now = time(NULL);
     99 
    100 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    101 		(void)printf("total %llu\n",
    102 		    (long long)(howmany(dp->btotal, blocksize)));
    103 
    104 	for (p = dp->list; p; p = p->fts_link) {
    105 		if (IS_NOPRINT(p))
    106 			continue;
    107 		sp = p->fts_statp;
    108 		if (f_inode)
    109 			(void)printf("%*lu ", dp->s_inode,
    110 			    (unsigned long)sp->st_ino);
    111 		if (f_size)
    112 			(void)printf("%*llu ", dp->s_block,
    113 			    (long long)howmany(sp->st_blocks, blocksize));
    114 		(void)strmode(sp->st_mode, buf);
    115 		np = p->fts_pointer;
    116 		(void)printf("%s %*lu ", buf, dp->s_nlink,
    117 		    (unsigned long)sp->st_nlink);
    118 		if (!f_grouponly)
    119 			(void)printf("%-*s  ", dp->s_user, np->user);
    120 		(void)printf("%-*s  ", dp->s_group, np->group);
    121 		if (f_flags)
    122 			(void)printf("%-*s ", dp->s_flags, np->flags);
    123 		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
    124 			(void)printf("%*u, %*u ",
    125 			    dp->s_major, major(sp->st_rdev), dp->s_minor,
    126 			    minor(sp->st_rdev));
    127 		else
    128 			(void)printf("%*llu ", dp->s_size,
    129 			    (long long)sp->st_size);
    130 		if (f_accesstime)
    131 			printtime(sp->st_atime);
    132 		else if (f_statustime)
    133 			printtime(sp->st_ctime);
    134 		else
    135 			printtime(sp->st_mtime);
    136 		if (f_nonprint)
    137 			(void)printescaped(p->fts_name);
    138 		else
    139 			(void)printf("%s", p->fts_name);
    140 
    141 		if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    142 			(void)printtype(sp->st_mode);
    143 		if (S_ISLNK(sp->st_mode))
    144 			printlink(p);
    145 		(void)putchar('\n');
    146 	}
    147 }
    148 
    149 void
    150 printcol(DISPLAY *dp)
    151 {
    152 	static FTSENT **array;
    153 	static int lastentries = -1;
    154 	FTSENT *p;
    155 	int base, chcnt, col, colwidth, num;
    156 	int numcols, numrows, row;
    157 
    158 	colwidth = dp->maxlen;
    159 	if (f_inode)
    160 		colwidth += dp->s_inode + 1;
    161 	if (f_size)
    162 		colwidth += dp->s_block + 1;
    163 	if (f_type || f_typedir)
    164 		colwidth += 1;
    165 
    166 	colwidth += 1;
    167 
    168 	if (termwidth < 2 * colwidth) {
    169 		printscol(dp);
    170 		return;
    171 	}
    172 
    173 	/*
    174 	 * Have to do random access in the linked list -- build a table
    175 	 * of pointers.
    176 	 */
    177 	if (dp->entries > lastentries) {
    178 		lastentries = dp->entries;
    179 		if ((array =
    180 		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
    181 			warn(NULL);
    182 			printscol(dp);
    183 		}
    184 	}
    185 	for (p = dp->list, num = 0; p; p = p->fts_link)
    186 		if (p->fts_number != NO_PRINT)
    187 			array[num++] = p;
    188 
    189 	numcols = termwidth / colwidth;
    190 	colwidth = termwidth / numcols;		/* spread out if possible */
    191 	numrows = num / numcols;
    192 	if (num % numcols)
    193 		++numrows;
    194 
    195 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    196 		(void)printf("total %llu\n",
    197 		    (long long)(howmany(dp->btotal, blocksize)));
    198 	for (row = 0; row < numrows; ++row) {
    199 		for (base = row, chcnt = col = 0; col < numcols; ++col) {
    200 			chcnt = printaname(array[base], dp->s_inode,
    201 			    dp->s_block);
    202 			if ((base += numrows) >= num)
    203 				break;
    204 			while (chcnt++ < colwidth)
    205 				(void)putchar(' ');
    206 		}
    207 		(void)putchar('\n');
    208 	}
    209 }
    210 
    211 void
    212 printacol(DISPLAY *dp)
    213 {
    214 	FTSENT *p;
    215 	int chcnt, col, colwidth;
    216 	int numcols;
    217 
    218 	colwidth = dp->maxlen;
    219 	if (f_inode)
    220 		colwidth += dp->s_inode + 1;
    221 	if (f_size)
    222 		colwidth += dp->s_block + 1;
    223 	if (f_type || f_typedir)
    224 		colwidth += 1;
    225 
    226 	colwidth += 1;
    227 
    228 	if (termwidth < 2 * colwidth) {
    229 		printscol(dp);
    230 		return;
    231 	}
    232 
    233 	numcols = termwidth / colwidth;
    234 	colwidth = termwidth / numcols;		/* spread out if possible */
    235 
    236 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
    237 		(void)printf("total %llu\n",
    238 		    (long long)(howmany(dp->btotal, blocksize)));
    239 	chcnt = col = 0;
    240 	for (p = dp->list; p; p = p->fts_link) {
    241 		if (IS_NOPRINT(p))
    242 			continue;
    243 		if (col >= numcols) {
    244 			chcnt = col = 0;
    245 			(void)putchar('\n');
    246 		}
    247 		chcnt = printaname(p, dp->s_inode, dp->s_block);
    248 		while (chcnt++ < colwidth)
    249 			(void)putchar(' ');
    250 		col++;
    251 	}
    252 	(void)putchar('\n');
    253 }
    254 
    255 void
    256 printstream(DISPLAY *dp)
    257 {
    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