print.c revision 61296 
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 61296 2000-06-05 20:54:46Z ache $";
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
73#define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
74
75#ifdef COLORLS
76/* Most of these are taken from <sys/stat.h> */
77typedef enum Colors {
78    C_DIR,     /* directory */
79    C_LNK,     /* symbolic link */
80    C_SOCK,    /* socket */
81    C_FIFO,    /* pipe */
82    C_EXEC,    /* executable */
83    C_BLK,     /* block special */
84    C_CHR,     /* character special */
85    C_SUID,    /* setuid executable */
86    C_SGID,    /* setgid executable */
87    C_WSDIR,   /* directory writeble to others, with sticky bit */
88    C_WDIR,    /* directory writeble to others, without sticky bit */
89    C_NUMCOLORS        /* just a place-holder */
90} Colors ;
91
92char *defcolors = "4x5x2x3x1x464301060203";
93
94static int colors[C_NUMCOLORS][2];
95#endif
96
97void
98printscol(dp)
99	DISPLAY *dp;
100{
101	FTSENT *p;
102
103	for (p = dp->list; p; p = p->fts_link) {
104		if (IS_NOPRINT(p))
105			continue;
106		(void)printaname(p, dp->s_inode, dp->s_block);
107		(void)putchar('\n');
108	}
109}
110
111void
112printlong(dp)
113	DISPLAY *dp;
114{
115	struct stat *sp;
116	FTSENT *p;
117	NAMES *np;
118	char buf[20];
119#ifdef COLORLS
120	int color_printed = 0;
121#endif
122
123	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
124		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
125
126	for (p = dp->list; p; p = p->fts_link) {
127		if (IS_NOPRINT(p))
128			continue;
129		sp = p->fts_statp;
130		if (f_inode)
131			(void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino);
132		if (f_size)
133			(void)printf("%*qd ",
134			    dp->s_block, howmany(sp->st_blocks, blocksize));
135		(void)strmode(sp->st_mode, buf);
136		np = p->fts_pointer;
137		(void)printf("%s %*u %-*s  %-*s  ", buf, dp->s_nlink,
138		    sp->st_nlink, dp->s_user, np->user, dp->s_group,
139		    np->group);
140		if (f_flags)
141			(void)printf("%-*s ", dp->s_flags, np->flags);
142		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
143			if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0)
144				(void)printf("%3d, 0x%08x ",
145				    major(sp->st_rdev),
146				    (u_int)minor(sp->st_rdev));
147			else
148				(void)printf("%3d, %3d ",
149				    major(sp->st_rdev), minor(sp->st_rdev));
150		else if (dp->bcfile)
151			(void)printf("%*s%*qd ",
152			    8 - dp->s_size, "", dp->s_size, sp->st_size);
153		else
154			(void)printf("%*qd ", dp->s_size, sp->st_size);
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#ifdef COLORLS
162		if (f_color)
163			color_printed = colortype(sp->st_mode);
164#endif
165		if (f_octal || f_octal_escape) (void)prn_octal(p->fts_name);
166		else (void)printf("%s", p->fts_name);
167#ifdef COLORLS
168		if (f_color && color_printed)
169			endcolor();
170#endif
171		if (f_type)
172			(void)printtype(sp->st_mode);
173		if (S_ISLNK(sp->st_mode))
174			printlink(p);
175		(void)putchar('\n');
176	}
177}
178
179void
180printcol(dp)
181	DISPLAY *dp;
182{
183	extern int termwidth;
184	static FTSENT **array;
185	static int lastentries = -1;
186	FTSENT *p;
187	int base, chcnt, cnt, col, colwidth, num;
188	int endcol, numcols, numrows, row;
189	int tabwidth;
190
191	if (f_notabs)
192		tabwidth = 1;
193	else
194		tabwidth = 8;
195
196	/*
197	 * Have to do random access in the linked list -- build a table
198	 * of pointers.
199	 */
200	if (dp->entries > lastentries) {
201		lastentries = dp->entries;
202		if ((array =
203		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
204			warn(NULL);
205			printscol(dp);
206		}
207	}
208	for (p = dp->list, num = 0; p; p = p->fts_link)
209		if (p->fts_number != NO_PRINT)
210			array[num++] = p;
211
212	colwidth = dp->maxlen;
213	if (f_inode)
214		colwidth += dp->s_inode + 1;
215	if (f_size)
216		colwidth += dp->s_block + 1;
217	if (f_type)
218		colwidth += 1;
219
220	colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
221	if (termwidth < 2 * colwidth) {
222		printscol(dp);
223		return;
224	}
225
226	numcols = termwidth / colwidth;
227	numrows = num / numcols;
228	if (num % numcols)
229		++numrows;
230
231	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
232		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
233	for (row = 0; row < numrows; ++row) {
234		endcol = colwidth;
235		for (base = row, chcnt = col = 0; col < numcols; ++col) {
236			chcnt += printaname(array[base], dp->s_inode,
237			    dp->s_block);
238			if ((base += numrows) >= num)
239				break;
240#ifdef COLORLS
241			/*
242			 * some terminals get confused if we mix tabs
243			 * with color sequences
244			 */
245			if (f_color)
246				while ((cnt = (chcnt + 1)) <= endcol) {
247					(void)putchar(' ');
248					chcnt = cnt;
249				}
250			else
251#endif
252			while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
253			    <= endcol){
254				(void)putchar(f_notabs ? ' ' : '\t');
255				chcnt = cnt;
256			}
257			endcol += colwidth;
258		}
259		(void)putchar('\n');
260	}
261}
262
263/*
264 * print [inode] [size] name
265 * return # of characters printed, no trailing characters.
266 */
267static int
268printaname(p, inodefield, sizefield)
269	FTSENT *p;
270	u_long sizefield, inodefield;
271{
272	struct stat *sp;
273	int chcnt;
274#ifdef COLORLS
275	int color_printed = 0;
276#endif
277
278	sp = p->fts_statp;
279	chcnt = 0;
280	if (f_inode)
281		chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino);
282	if (f_size)
283		chcnt += printf("%*qd ",
284		    (int)sizefield, howmany(sp->st_blocks, blocksize));
285#ifdef COLORLS
286	if (f_color)
287		color_printed = colortype(sp->st_mode);
288#endif
289	chcnt += (f_octal || f_octal_escape) ? prn_octal(p->fts_name)
290	                                     : printf("%s", p->fts_name);
291#ifdef COLORLS
292	if (f_color && color_printed)
293		endcolor();
294#endif
295	if (f_type)
296		chcnt += printtype(sp->st_mode);
297	return (chcnt);
298}
299
300static void
301printtime(ftime)
302	time_t ftime;
303{
304	int i;
305	char longstring[80];
306	static time_t now;
307
308	if (now == 0)
309		now = time(NULL);
310
311	strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
312	for (i = 4; i < 11; ++i)
313		(void)putchar(longstring[i]);
314
315#define	SIXMONTHS	((365 / 2) * 86400)
316	if (f_sectime)
317		for (i = 11; i < 24; i++)
318			(void)putchar(longstring[i]);
319	else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
320		for (i = 11; i < 16; ++i)
321			(void)putchar(longstring[i]);
322	else {
323		(void)putchar(' ');
324		for (i = 20; i < 24; ++i)
325			(void)putchar(longstring[i]);
326	}
327	(void)putchar(' ');
328}
329
330static int
331printtype(mode)
332	u_int mode;
333{
334	switch (mode & S_IFMT) {
335	case S_IFDIR:
336		(void)putchar('/');
337		return (1);
338	case S_IFIFO:
339		(void)putchar('|');
340		return (1);
341	case S_IFLNK:
342		(void)putchar('@');
343		return (1);
344	case S_IFSOCK:
345		(void)putchar('=');
346		return (1);
347	case S_IFWHT:
348		(void)putchar('%');
349		return (1);
350	}
351	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
352		(void)putchar('*');
353		return (1);
354	}
355	return (0);
356}
357
358#ifdef COLORLS
359int putch(c)
360	int c;
361{
362	return putc(c, stdout);
363}
364
365
366void
367printcolor(c)
368       Colors c;
369{
370	char *ansiseq;
371
372	if (colors[c][0] != -1) {
373		ansiseq = tgoto(ansi_fgcol, 0, colors[c][0]);
374		if (ansiseq && *ansiseq != 'O') /* "OOPS" */
375			tputs(ansiseq, 1, putch);
376	}
377
378	if (colors[c][1] != -1) {
379		ansiseq = tgoto(ansi_bgcol, 0, colors[c][1]);
380		if (ansiseq && *ansiseq != 'O') /* "OOPS" */
381			tputs(ansiseq, 1, putch);
382	}
383}
384
385void
386endcolor()
387{
388	tputs(ansi_coloff, 1, putch);
389}
390
391int
392colortype(mode)
393       mode_t mode;
394{
395	switch(mode & S_IFMT) {
396	      case S_IFDIR:
397		if (mode & S_IWOTH)
398		    if (mode & S_ISTXT)
399			printcolor(C_WSDIR);
400		    else
401			printcolor(C_WDIR);
402		else
403		    printcolor(C_DIR);
404		return(1);
405	      case S_IFLNK:
406		printcolor(C_LNK);
407		return(1);
408	      case S_IFSOCK:
409		printcolor(C_SOCK);
410		return(1);
411	      case S_IFIFO:
412		printcolor(C_FIFO);
413		return(1);
414	      case S_IFBLK:
415		printcolor(C_BLK);
416		return(1);
417	      case S_IFCHR:
418		printcolor(C_CHR);
419		return(1);
420	}
421	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
422		if (mode & S_ISUID)
423		    printcolor(C_SUID);
424		else if (mode & S_ISGID)
425		    printcolor(C_SGID);
426		else
427		    printcolor(C_EXEC);
428		return(1);
429	}
430	return(0);
431}
432
433void
434parsecolors(cs)
435char *cs;
436{
437	int i, j, len;
438	char c[2];
439	if (cs == NULL)    cs = ""; /* LSCOLORS not set */
440	len = strlen(cs);
441	for (i = 0 ; i < C_NUMCOLORS ; i++) {
442		if (len <= 2*i) {
443			c[0] = defcolors[2*i];
444			c[1] = defcolors[2*i+1];
445		}
446		else {
447			c[0] = cs[2*i];
448			c[1] = cs[2*i+1];
449		}
450		for (j = 0 ; j < 2 ; j++) {
451			if ((c[j] < '0' || c[j] > '7') &&
452			    tolower((unsigned char)c[j]) != 'x') {
453				fprintf(stderr,
454					"error: invalid character '%c' in LSCOLORS env var\n",
455					c[j]);
456				c[j] = defcolors[2*i+j];
457			}
458			if (c[j] == 'x')
459			    colors[i][j] = -1;
460			else
461			    colors[i][j] = c[j]-'0';
462		}
463	}
464}
465
466void colorquit(sig)
467	int sig;
468{
469	endcolor();
470	fflush(stdout);
471
472	(void) signal(sig, SIG_DFL);
473	(void) kill(getpid(), sig);
474}
475#endif /*COLORLS*/
476
477static void
478printlink(p)
479	FTSENT *p;
480{
481	int lnklen;
482	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
483
484	if (p->fts_level == FTS_ROOTLEVEL)
485		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
486	else
487		(void)snprintf(name, sizeof(name),
488		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
489	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
490		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
491		return;
492	}
493	path[lnklen] = '\0';
494	if (f_octal || f_octal_escape) {
495	        (void)printf(" -> ");
496	        (void)prn_octal(path);
497	}
498	else (void)printf(" -> %s", path);
499}
500