print.c revision 62597 
1/*
2 * Copyright (c) 1989, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Michael Fischbein.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)print.c	8.4 (Berkeley) 4/17/94";
40#else
41static const char rcsid[] =
42  "$FreeBSD: head/bin/ls/print.c 62597 2000-07-04 23:09:23Z assar $";
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/stat.h>
48
49#include <err.h>
50#include <errno.h>
51#include <fts.h>
52#include <grp.h>
53#include <pwd.h>
54#include <stdio.h>
55#include <stdlib.h>
56#include <string.h>
57#include <time.h>
58#include <unistd.h>
59#ifdef COLORLS
60#include <ctype.h>
61#include <termcap.h>
62#include <signal.h>
63#endif
64
65#include "ls.h"
66#include "extern.h"
67
68static int	printaname __P((FTSENT *, u_long, u_long));
69static void	printlink __P((FTSENT *));
70static void	printtime __P((time_t));
71static int	printtype __P((u_int));
72#ifdef COLORLS
73static void     endcolor __P((int));
74static int      colortype __P((mode_t));
75#endif
76
77#define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
78
79#ifdef COLORLS
80/* Most of these are taken from <sys/stat.h> */
81typedef enum Colors {
82    C_DIR,     /* directory */
83    C_LNK,     /* symbolic link */
84    C_SOCK,    /* socket */
85    C_FIFO,    /* pipe */
86    C_EXEC,    /* executable */
87    C_BLK,     /* block special */
88    C_CHR,     /* character special */
89    C_SUID,    /* setuid executable */
90    C_SGID,    /* setgid executable */
91    C_WSDIR,   /* directory writeble to others, with sticky bit */
92    C_WDIR,    /* directory writeble to others, without sticky bit */
93    C_NUMCOLORS        /* just a place-holder */
94} Colors ;
95
96char *defcolors = "4x5x2x3x1x464301060203";
97
98static int colors[C_NUMCOLORS][2];
99#endif
100
101void
102printscol(dp)
103	DISPLAY *dp;
104{
105	FTSENT *p;
106
107	for (p = dp->list; p; p = p->fts_link) {
108		if (IS_NOPRINT(p))
109			continue;
110		(void)printaname(p, dp->s_inode, dp->s_block);
111		(void)putchar('\n');
112	}
113}
114
115/*
116 * print name in current style
117 */
118static int
119printname(name)
120	const char *name;
121{
122	if (f_octal || f_octal_escape)
123		return prn_octal(name);
124	else if (f_nonprint)
125		return prn_printable(name);
126	else
127		return printf("%s", name);
128}
129
130void
131printlong(dp)
132	DISPLAY *dp;
133{
134	struct stat *sp;
135	FTSENT *p;
136	NAMES *np;
137	char buf[20];
138#ifdef COLORLS
139	int color_printed = 0;
140#endif
141
142	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
143		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
144
145	for (p = dp->list; p; p = p->fts_link) {
146		if (IS_NOPRINT(p))
147			continue;
148		sp = p->fts_statp;
149		if (f_inode)
150			(void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino);
151		if (f_size)
152			(void)printf("%*qd ",
153			    dp->s_block, howmany(sp->st_blocks, blocksize));
154		(void)strmode(sp->st_mode, buf);
155		np = p->fts_pointer;
156		(void)printf("%s %*u %-*s  %-*s  ", buf, dp->s_nlink,
157		    sp->st_nlink, dp->s_user, np->user, dp->s_group,
158		    np->group);
159		if (f_flags)
160			(void)printf("%-*s ", dp->s_flags, np->flags);
161		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
162			if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0)
163				(void)printf("%3d, 0x%08x ",
164				    major(sp->st_rdev),
165				    (u_int)minor(sp->st_rdev));
166			else
167				(void)printf("%3d, %3d ",
168				    major(sp->st_rdev), minor(sp->st_rdev));
169		else if (dp->bcfile)
170			(void)printf("%*s%*qd ",
171			    8 - dp->s_size, "", dp->s_size, sp->st_size);
172		else
173			(void)printf("%*qd ", dp->s_size, sp->st_size);
174		if (f_accesstime)
175			printtime(sp->st_atime);
176		else if (f_statustime)
177			printtime(sp->st_ctime);
178		else
179			printtime(sp->st_mtime);
180#ifdef COLORLS
181		if (f_color)
182			color_printed = colortype(sp->st_mode);
183#endif
184		(void)printname(p->fts_name);
185#ifdef COLORLS
186		if (f_color && color_printed)
187			endcolor(0);
188#endif
189		if (f_type)
190			(void)printtype(sp->st_mode);
191		if (S_ISLNK(sp->st_mode))
192			printlink(p);
193		(void)putchar('\n');
194	}
195}
196
197void
198printcol(dp)
199	DISPLAY *dp;
200{
201	extern int termwidth;
202	static FTSENT **array;
203	static int lastentries = -1;
204	FTSENT *p;
205	int base, chcnt, cnt, col, colwidth, num;
206	int endcol, numcols, numrows, row;
207	int tabwidth;
208
209	if (f_notabs)
210		tabwidth = 1;
211	else
212		tabwidth = 8;
213
214	/*
215	 * Have to do random access in the linked list -- build a table
216	 * of pointers.
217	 */
218	if (dp->entries > lastentries) {
219		lastentries = dp->entries;
220		if ((array =
221		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
222			warn(NULL);
223			printscol(dp);
224		}
225	}
226	for (p = dp->list, num = 0; p; p = p->fts_link)
227		if (p->fts_number != NO_PRINT)
228			array[num++] = p;
229
230	colwidth = dp->maxlen;
231	if (f_inode)
232		colwidth += dp->s_inode + 1;
233	if (f_size)
234		colwidth += dp->s_block + 1;
235	if (f_type)
236		colwidth += 1;
237
238	colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
239	if (termwidth < 2 * colwidth) {
240		printscol(dp);
241		return;
242	}
243
244	numcols = termwidth / colwidth;
245	numrows = num / numcols;
246	if (num % numcols)
247		++numrows;
248
249	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
250		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
251	for (row = 0; row < numrows; ++row) {
252		endcol = colwidth;
253		for (base = row, chcnt = col = 0; col < numcols; ++col) {
254			chcnt += printaname(array[base], dp->s_inode,
255			    dp->s_block);
256			if ((base += numrows) >= num)
257				break;
258			while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
259			    <= endcol){
260				(void)putchar(f_notabs ? ' ' : '\t');
261				chcnt = cnt;
262			}
263			endcol += colwidth;
264		}
265		(void)putchar('\n');
266	}
267}
268
269/*
270 * print [inode] [size] name
271 * return # of characters printed, no trailing characters.
272 */
273static int
274printaname(p, inodefield, sizefield)
275	FTSENT *p;
276	u_long sizefield, inodefield;
277{
278	struct stat *sp;
279	int chcnt;
280#ifdef COLORLS
281	int color_printed = 0;
282#endif
283
284	sp = p->fts_statp;
285	chcnt = 0;
286	if (f_inode)
287		chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino);
288	if (f_size)
289		chcnt += printf("%*qd ",
290		    (int)sizefield, howmany(sp->st_blocks, blocksize));
291#ifdef COLORLS
292	if (f_color)
293		color_printed = colortype(sp->st_mode);
294#endif
295	chcnt += printname(p->fts_name);
296#ifdef COLORLS
297	if (f_color && color_printed)
298		endcolor(0);
299#endif
300	if (f_type)
301		chcnt += printtype(sp->st_mode);
302	return (chcnt);
303}
304
305static void
306printtime(ftime)
307	time_t ftime;
308{
309	char longstring[80];
310	static time_t now;
311	const char *format;
312
313	if (now == 0)
314		now = time(NULL);
315
316#define	SIXMONTHS	((365 / 2) * 86400)
317	/* "%Ef" is a FreeBSD strftime definition for "%e %b" or "%b %e".
318	 * Actually format is locale sensitive.
319	 */
320	if (f_sectime)
321		/* mmm dd hh:mm:ss yyyy || dd mmm hh:mm:ss yyyy */
322		format = "%Ef %T %Y ";
323	else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
324		/* mmm dd hh:mm || dd mmm hh:mm */
325		format = "%Ef %R ";
326	else
327		/* mmm dd  yyyy || dd mmm  yyyy */
328		format = "%Ef  %Y ";
329	strftime(longstring, sizeof(longstring), format, localtime(&ftime));
330	fputs(longstring, stdout);
331}
332
333static int
334printtype(mode)
335	u_int mode;
336{
337	switch (mode & S_IFMT) {
338	case S_IFDIR:
339		(void)putchar('/');
340		return (1);
341	case S_IFIFO:
342		(void)putchar('|');
343		return (1);
344	case S_IFLNK:
345		(void)putchar('@');
346		return (1);
347	case S_IFSOCK:
348		(void)putchar('=');
349		return (1);
350	case S_IFWHT:
351		(void)putchar('%');
352		return (1);
353	}
354	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
355		(void)putchar('*');
356		return (1);
357	}
358	return (0);
359}
360
361#ifdef COLORLS
362static int
363putch(c)
364	int c;
365{
366	(void) putchar(c);
367	return 0;
368}
369
370static int
371writech(c)
372	int c;
373{
374	char tmp = c;
375
376	(void) write(STDOUT_FILENO, &tmp, 1);
377	return 0;
378}
379
380static void
381printcolor(c)
382       Colors c;
383{
384	char *ansiseq;
385
386	if (colors[c][0] != -1) {
387		ansiseq = tgoto(ansi_fgcol, 0, colors[c][0]);
388		if (ansiseq)
389			tputs(ansiseq, 1, putch);
390	}
391
392	if (colors[c][1] != -1) {
393		ansiseq = tgoto(ansi_bgcol, 0, colors[c][1]);
394		if (ansiseq)
395			tputs(ansiseq, 1, putch);
396	}
397}
398
399static void
400endcolor(sig)
401	int sig;
402{
403	tputs(ansi_coloff, 1, sig ? writech : putch);
404}
405
406static int
407colortype(mode)
408       mode_t mode;
409{
410	switch(mode & S_IFMT) {
411	      case S_IFDIR:
412		if (mode & S_IWOTH)
413		    if (mode & S_ISTXT)
414			printcolor(C_WSDIR);
415		    else
416			printcolor(C_WDIR);
417		else
418		    printcolor(C_DIR);
419		return(1);
420	      case S_IFLNK:
421		printcolor(C_LNK);
422		return(1);
423	      case S_IFSOCK:
424		printcolor(C_SOCK);
425		return(1);
426	      case S_IFIFO:
427		printcolor(C_FIFO);
428		return(1);
429	      case S_IFBLK:
430		printcolor(C_BLK);
431		return(1);
432	      case S_IFCHR:
433		printcolor(C_CHR);
434		return(1);
435	}
436	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
437		if (mode & S_ISUID)
438		    printcolor(C_SUID);
439		else if (mode & S_ISGID)
440		    printcolor(C_SGID);
441		else
442		    printcolor(C_EXEC);
443		return(1);
444	}
445	return(0);
446}
447
448void
449parsecolors(cs)
450char *cs;
451{
452	int i, j, len;
453	char c[2];
454
455	if (cs == NULL)    cs = ""; /* LSCOLORS not set */
456	len = strlen(cs);
457	for (i = 0 ; i < C_NUMCOLORS ; i++) {
458		if (len <= 2*i) {
459			c[0] = defcolors[2*i];
460			c[1] = defcolors[2*i+1];
461		}
462		else {
463			c[0] = cs[2*i];
464			c[1] = cs[2*i+1];
465		}
466		for (j = 0 ; j < 2 ; j++) {
467			if ((c[j] < '0' || c[j] > '7') &&
468			    tolower((unsigned char)c[j]) != 'x') {
469				fprintf(stderr,
470					"error: invalid character '%c' in LSCOLORS env var\n",
471					c[j]);
472				c[j] = defcolors[2*i+j];
473			}
474			if (tolower((unsigned char)c[j]) == 'x')
475			    colors[i][j] = -1;
476			else
477			    colors[i][j] = c[j]-'0';
478		}
479	}
480}
481
482void
483colorquit(sig)
484	int sig;
485{
486	endcolor(sig);
487
488	(void) signal(sig, SIG_DFL);
489	(void) kill(getpid(), sig);
490}
491#endif /*COLORLS*/
492
493static void
494printlink(p)
495	FTSENT *p;
496{
497	int lnklen;
498	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
499
500	if (p->fts_level == FTS_ROOTLEVEL)
501		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
502	else
503		(void)snprintf(name, sizeof(name),
504		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
505	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
506		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
507		return;
508	}
509	path[lnklen] = '\0';
510	(void)printf(" -> ");
511	printname(path);
512}
513