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print.c revision 1.41 
      1 /*	$NetBSD: print.c,v 1.41 2005/10/31 14:13:33 jschauma 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. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)print.c	8.5 (Berkeley) 7/28/94";
     39 #else
     40 __RCSID("$NetBSD: print.c,v 1.41 2005/10/31 14:13:33 jschauma Exp $");
     41 #endif
     42 #endif /* not lint */
     43 
     44 #include <sys/param.h>
     45 #include <sys/stat.h>
     46 
     47 #include <err.h>
     48 #include <errno.h>
     49 #include <fts.h>
     50 #include <grp.h>
     51 #include <pwd.h>
     52 #include <stdio.h>
     53 #include <stdlib.h>
     54 #include <string.h>
     55 #include <time.h>
     56 #include <tzfile.h>
     57 #include <unistd.h>
     58 #include <util.h>
     59 
     60 #include "ls.h"
     61 #include "extern.h"
     62 
     63 extern int termwidth;
     64 
     65 static int	printaname(FTSENT *, int, int);
     66 static void	printlink(FTSENT *);
     67 static void	printtime(time_t);
     68 static int	printtype(u_int);
     69 
     70 static time_t	now;
     71 
     72 #define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
     73 
     74 void
     75 printscol(DISPLAY *dp)
     76 {
     77 	FTSENT *p;
     78 
     79 	for (p = dp->list; p; p = p->fts_link) {
     80 		if (IS_NOPRINT(p))
     81 			continue;
     82 		(void)printaname(p, dp->s_inode, dp->s_block);
     83 		(void)putchar('\n');
     84 	}
     85 }
     86 
     87 void
     88 printlong(DISPLAY *dp)
     89 {
     90 	struct stat *sp;
     91 	FTSENT *p;
     92 	NAMES *np;
     93 	char buf[20], szbuf[5];
     94 
     95 	now = time(NULL);
     96 
     97 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) {
     98 		if (f_humanize) {
     99 			if ((humanize_number(szbuf, sizeof(szbuf), dp->stotal,
    100 			    "", HN_AUTOSCALE,
    101 			    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    102 				err(1, "humanize_number");
    103 			(void)printf("total %s\n", szbuf);
    104 		} else {
    105 			(void)printf("total %llu\n",
    106 			    (long long)(howmany(dp->btotal, blocksize)));
    107 		}
    108 	}
    109 
    110 	for (p = dp->list; p; p = p->fts_link) {
    111 		if (IS_NOPRINT(p))
    112 			continue;
    113 		sp = p->fts_statp;
    114 		if (f_inode)
    115 			(void)printf("%*lu ", dp->s_inode,
    116 			    (unsigned long)sp->st_ino);
    117 		if (f_size) {
    118 			if (f_humanize) {
    119 				if ((humanize_number(szbuf, sizeof(szbuf),
    120 					sp->st_blocks * S_BLKSIZE,
    121 			    "", HN_AUTOSCALE,
    122 			    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    123 				err(1, "humanize_number");
    124 			(void)printf("%*s ", dp->s_block, szbuf);
    125 			} else {
    126 			(void)printf("%*llu ", dp->s_block,
    127 					(long long)howmany(sp->st_blocks,
    128 							   	blocksize));
    129 			}
    130 		}
    131 		(void)strmode(sp->st_mode, buf);
    132 		np = p->fts_pointer;
    133 		(void)printf("%s %*lu ", buf, dp->s_nlink,
    134 		    (unsigned long)sp->st_nlink);
    135 		if (!f_grouponly)
    136 			(void)printf("%-*s  ", dp->s_user, np->user);
    137 		(void)printf("%-*s  ", dp->s_group, np->group);
    138 		if (f_flags)
    139 			(void)printf("%-*s ", dp->s_flags, np->flags);
    140 		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
    141 			(void)printf("%*u, %*u ",
    142 			    dp->s_major, major(sp->st_rdev), dp->s_minor,
    143 			    minor(sp->st_rdev));
    144 		else
    145 			if (f_humanize) {
    146 				if ((humanize_number(szbuf, sizeof(szbuf),
    147 				    sp->st_size, "", HN_AUTOSCALE,
    148 				    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    149 					err(1, "humanize_number");
    150 				(void)printf("%*s ", dp->s_size, szbuf);
    151 			} else {
    152 				(void)printf("%*llu ", dp->s_size,
    153 				    (long long)sp->st_size);
    154 			}
    155 		if (f_accesstime)
    156 			printtime(sp->st_atime);
    157 		else if (f_statustime)
    158 			printtime(sp->st_ctime);
    159 		else
    160 			printtime(sp->st_mtime);
    161 		if (f_octal || f_octal_escape)
    162 			(void)safe_print(p->fts_name);
    163 		else if (f_nonprint)
    164 			(void)printescaped(p->fts_name);
    165 		else
    166 			(void)printf("%s", p->fts_name);
    167 
    168 		if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    169 			(void)printtype(sp->st_mode);
    170 		if (S_ISLNK(sp->st_mode))
    171 			printlink(p);
    172 		(void)putchar('\n');
    173 	}
    174 }
    175 
    176 void
    177 printcol(DISPLAY *dp)
    178 {
    179 	static FTSENT **array;
    180 	static int lastentries = -1;
    181 	FTSENT *p;
    182 	int base, chcnt, col, colwidth, num;
    183 	int numcols, numrows, row;
    184 	char szbuf[5];
    185 
    186 	colwidth = dp->maxlen;
    187 	if (f_inode)
    188 		colwidth += dp->s_inode + 1;
    189 	if (f_size) {
    190 		if (f_humanize)
    191 			colwidth += dp->s_size + 1;
    192 		else
    193 			colwidth += dp->s_block + 1;
    194 	}
    195 	if (f_type || f_typedir)
    196 		colwidth += 1;
    197 
    198 	colwidth += 1;
    199 
    200 	if (termwidth < 2 * colwidth) {
    201 		printscol(dp);
    202 		return;
    203 	}
    204 
    205 	/*
    206 	 * Have to do random access in the linked list -- build a table
    207 	 * of pointers.
    208 	 */
    209 	if (dp->entries > lastentries) {
    210 		lastentries = dp->entries;
    211 		if ((array =
    212 		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
    213 			warn(NULL);
    214 			printscol(dp);
    215 		}
    216 	}
    217 	for (p = dp->list, num = 0; p; p = p->fts_link)
    218 		if (p->fts_number != NO_PRINT)
    219 			array[num++] = p;
    220 
    221 	numcols = termwidth / colwidth;
    222 	colwidth = termwidth / numcols;		/* spread out if possible */
    223 	numrows = num / numcols;
    224 	if (num % numcols)
    225 		++numrows;
    226 
    227 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) {
    228 		if (f_humanize) {
    229 			if ((humanize_number(szbuf, sizeof(szbuf), dp->stotal,
    230 			    "", HN_AUTOSCALE,
    231 			    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    232 				err(1, "humanize_number");
    233 			(void)printf("total %s\n", szbuf);
    234 		} else {
    235 			(void)printf("total %llu\n",
    236 			    (long long)(howmany(dp->btotal, blocksize)));
    237 		}
    238 	}
    239 	for (row = 0; row < numrows; ++row) {
    240 		for (base = row, chcnt = col = 0; col < numcols; ++col) {
    241 			chcnt = printaname(array[base], dp->s_inode,
    242 			    f_humanize ? dp->s_size : dp->s_block);
    243 			if ((base += numrows) >= num)
    244 				break;
    245 			while (chcnt++ < colwidth)
    246 				(void)putchar(' ');
    247 		}
    248 		(void)putchar('\n');
    249 	}
    250 }
    251 
    252 void
    253 printacol(DISPLAY *dp)
    254 {
    255 	FTSENT *p;
    256 	int chcnt, col, colwidth;
    257 	int numcols;
    258 	char szbuf[5];
    259 
    260 	colwidth = dp->maxlen;
    261 	if (f_inode)
    262 		colwidth += dp->s_inode + 1;
    263 	if (f_size) {
    264 		if (f_humanize)
    265 			colwidth += dp->s_size + 1;
    266 		else
    267 			colwidth += dp->s_block + 1;
    268 	}
    269 	if (f_type || f_typedir)
    270 		colwidth += 1;
    271 
    272 	colwidth += 1;
    273 
    274 	if (termwidth < 2 * colwidth) {
    275 		printscol(dp);
    276 		return;
    277 	}
    278 
    279 	numcols = termwidth / colwidth;
    280 	colwidth = termwidth / numcols;		/* spread out if possible */
    281 
    282 	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size)) {
    283 		if (f_humanize) {
    284 			if ((humanize_number(szbuf, sizeof(szbuf), dp->stotal,
    285 			    "", HN_AUTOSCALE,
    286 			    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    287 				err(1, "humanize_number");
    288 			(void)printf("total %s\n", szbuf);
    289 		} else {
    290 			(void)printf("total %llu\n",
    291 			    (long long)(howmany(dp->btotal, blocksize)));
    292 		}
    293 	}
    294 	chcnt = col = 0;
    295 	for (p = dp->list; p; p = p->fts_link) {
    296 		if (IS_NOPRINT(p))
    297 			continue;
    298 		if (col >= numcols) {
    299 			chcnt = col = 0;
    300 			(void)putchar('\n');
    301 		}
    302 		chcnt = printaname(p, dp->s_inode,
    303 		    f_humanize ? dp->s_size : dp->s_block);
    304 		while (chcnt++ < colwidth)
    305 			(void)putchar(' ');
    306 		col++;
    307 	}
    308 	(void)putchar('\n');
    309 }
    310 
    311 void
    312 printstream(DISPLAY *dp)
    313 {
    314 	FTSENT *p;
    315 	int col;
    316 	int extwidth;
    317 
    318 	extwidth = 0;
    319 	if (f_inode)
    320 		extwidth += dp->s_inode + 1;
    321 	if (f_size) {
    322 		if (f_humanize)
    323 			extwidth += dp->s_size + 1;
    324 		else
    325 			extwidth += dp->s_block + 1;
    326 	}
    327 	if (f_type)
    328 		extwidth += 1;
    329 
    330 	for (col = 0, p = dp->list; p != NULL; p = p->fts_link) {
    331 		if (IS_NOPRINT(p))
    332 			continue;
    333 		if (col > 0) {
    334 			(void)putchar(','), col++;
    335 			if (col + 1 + extwidth + p->fts_namelen >= termwidth)
    336 				(void)putchar('\n'), col = 0;
    337 			else
    338 				(void)putchar(' '), col++;
    339 		}
    340 		col += printaname(p, dp->s_inode,
    341 		    f_humanize ? dp->s_size : dp->s_block);
    342 	}
    343 	(void)putchar('\n');
    344 }
    345 
    346 /*
    347  * print [inode] [size] name
    348  * return # of characters printed, no trailing characters.
    349  */
    350 static int
    351 printaname(FTSENT *p, int inodefield, int sizefield)
    352 {
    353 	struct stat *sp;
    354 	int chcnt;
    355 	char szbuf[5];
    356 
    357 	sp = p->fts_statp;
    358 	chcnt = 0;
    359 	if (f_inode)
    360 		chcnt += printf("%*lu ", inodefield, (unsigned long)sp->st_ino);
    361 	if (f_size) {
    362 		if (f_humanize) {
    363 			if ((humanize_number(szbuf, sizeof(szbuf), sp->st_size,
    364 			    "", HN_AUTOSCALE,
    365 			    (HN_DECIMAL | HN_B | HN_NOSPACE))) == -1)
    366 				err(1, "humanize_number");
    367 			chcnt += printf("%*s ", sizefield, szbuf);
    368 		} else {
    369 			chcnt += printf("%*llu ", sizefield,
    370 			    (long long)howmany(sp->st_blocks, blocksize));
    371 		}
    372 	}
    373 	if (f_octal || f_octal_escape)
    374 		chcnt += safe_print(p->fts_name);
    375 	else if (f_nonprint)
    376 		chcnt += printescaped(p->fts_name);
    377 	else
    378 		chcnt += printf("%s", p->fts_name);
    379 	if (f_type || (f_typedir && S_ISDIR(sp->st_mode)))
    380 		chcnt += printtype(sp->st_mode);
    381 	return (chcnt);
    382 }
    383 
    384 static void
    385 printtime(time_t ftime)
    386 {
    387 	int i;
    388 	char *longstring;
    389 
    390 	longstring = ctime(&ftime);
    391 	for (i = 4; i < 11; ++i)
    392 		(void)putchar(longstring[i]);
    393 
    394 #define	SIXMONTHS	((DAYSPERNYEAR / 2) * SECSPERDAY)
    395 	if (f_sectime)
    396 		for (i = 11; i < 24; i++)
    397 			(void)putchar(longstring[i]);
    398 	else if (ftime + SIXMONTHS > now && ftime - SIXMONTHS < now)
    399 		for (i = 11; i < 16; ++i)
    400 			(void)putchar(longstring[i]);
    401 	else {
    402 		(void)putchar(' ');
    403 		for (i = 20; i < 24; ++i)
    404 			(void)putchar(longstring[i]);
    405 	}
    406 	(void)putchar(' ');
    407 }
    408 
    409 static int
    410 printtype(u_int mode)
    411 {
    412 	switch (mode & S_IFMT) {
    413 	case S_IFDIR:
    414 		(void)putchar('/');
    415 		return (1);
    416 	case S_IFIFO:
    417 		(void)putchar('|');
    418 		return (1);
    419 	case S_IFLNK:
    420 		(void)putchar('@');
    421 		return (1);
    422 	case S_IFSOCK:
    423 		(void)putchar('=');
    424 		return (1);
    425 	case S_IFWHT:
    426 		(void)putchar('%');
    427 		return (1);
    428 	}
    429 	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
    430 		(void)putchar('*');
    431 		return (1);
    432 	}
    433 	return (0);
    434 }
    435 
    436 static void
    437 printlink(FTSENT *p)
    438 {
    439 	int lnklen;
    440 	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
    441 
    442 	if (p->fts_level == FTS_ROOTLEVEL)
    443 		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
    444 	else
    445 		(void)snprintf(name, sizeof(name),
    446 		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
    447 	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
    448 		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
    449 		return;
    450 	}
    451 	path[lnklen] = '\0';
    452 	(void)printf(" -> ");
    453 	if (f_octal || f_octal_escape)
    454 		(void)safe_print(path);
    455 	else if (f_nonprint)
    456 		(void)printescaped(path);
    457 	else
    458 		(void)printf("%s", path);
    459 }
    460