print.c revision 61294 
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 61294 2000-06-05 20:08:50Z 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 <term.h>       /* for tparm */
63#include <signal.h>
64#endif
65
66#include "ls.h"
67#include "extern.h"
68
69static int	printaname __P((FTSENT *, u_long, u_long));
70static void	printlink __P((FTSENT *));
71static void	printtime __P((time_t));
72static int	printtype __P((u_int));
73
74#define	IS_NOPRINT(p)	((p)->fts_number == NO_PRINT)
75
76#ifdef COLORLS
77/* Most of these are taken from <sys/stat.h> */
78typedef enum Colors {
79    C_DIR,     /* directory */
80    C_LNK,     /* symbolic link */
81    C_SOCK,    /* socket */
82    C_FIFO,    /* pipe */
83    C_EXEC,    /* executable */
84    C_BLK,     /* block special */
85    C_CHR,     /* character special */
86    C_SUID,    /* setuid executable */
87    C_SGID,    /* setgid executable */
88    C_WSDIR,   /* directory writeble to others, with sticky bit */
89    C_WDIR,    /* directory writeble to others, without sticky bit */
90    C_NUMCOLORS        /* just a place-holder */
91} Colors ;
92
93char *defcolors = "4x5x2x3x1x464301060203";
94
95static int colors[C_NUMCOLORS][2];
96#endif
97
98void
99printscol(dp)
100	DISPLAY *dp;
101{
102	FTSENT *p;
103
104	for (p = dp->list; p; p = p->fts_link) {
105		if (IS_NOPRINT(p))
106			continue;
107		(void)printaname(p, dp->s_inode, dp->s_block);
108		(void)putchar('\n');
109	}
110}
111
112void
113printlong(dp)
114	DISPLAY *dp;
115{
116	struct stat *sp;
117	FTSENT *p;
118	NAMES *np;
119	char buf[20];
120#ifdef COLORLS
121	int color_printed = 0;
122#endif
123
124	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
125		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
126
127	for (p = dp->list; p; p = p->fts_link) {
128		if (IS_NOPRINT(p))
129			continue;
130		sp = p->fts_statp;
131		if (f_inode)
132			(void)printf("%*lu ", dp->s_inode, (u_long)sp->st_ino);
133		if (f_size)
134			(void)printf("%*qd ",
135			    dp->s_block, howmany(sp->st_blocks, blocksize));
136		(void)strmode(sp->st_mode, buf);
137		np = p->fts_pointer;
138		(void)printf("%s %*u %-*s  %-*s  ", buf, dp->s_nlink,
139		    sp->st_nlink, dp->s_user, np->user, dp->s_group,
140		    np->group);
141		if (f_flags)
142			(void)printf("%-*s ", dp->s_flags, np->flags);
143		if (S_ISCHR(sp->st_mode) || S_ISBLK(sp->st_mode))
144			if (minor(sp->st_rdev) > 255 || minor(sp->st_rdev) < 0)
145				(void)printf("%3d, 0x%08x ",
146				    major(sp->st_rdev),
147				    (u_int)minor(sp->st_rdev));
148			else
149				(void)printf("%3d, %3d ",
150				    major(sp->st_rdev), minor(sp->st_rdev));
151		else if (dp->bcfile)
152			(void)printf("%*s%*qd ",
153			    8 - dp->s_size, "", dp->s_size, sp->st_size);
154		else
155			(void)printf("%*qd ", dp->s_size, sp->st_size);
156		if (f_accesstime)
157			printtime(sp->st_atime);
158		else if (f_statustime)
159			printtime(sp->st_ctime);
160		else
161			printtime(sp->st_mtime);
162#ifdef COLORLS
163		if (f_color)
164			color_printed = colortype(sp->st_mode);
165#endif
166		if (f_octal || f_octal_escape) (void)prn_octal(p->fts_name);
167		else (void)printf("%s", p->fts_name);
168#ifdef COLORLS
169		if (f_color && color_printed)
170			endcolor();
171#endif
172		if (f_type)
173			(void)printtype(sp->st_mode);
174		if (S_ISLNK(sp->st_mode))
175			printlink(p);
176		(void)putchar('\n');
177	}
178}
179
180void
181printcol(dp)
182	DISPLAY *dp;
183{
184	extern int termwidth;
185	static FTSENT **array;
186	static int lastentries = -1;
187	FTSENT *p;
188	int base, chcnt, cnt, col, colwidth, num;
189	int endcol, numcols, numrows, row;
190	int tabwidth;
191
192	if (f_notabs)
193		tabwidth = 1;
194	else
195		tabwidth = 8;
196
197	/*
198	 * Have to do random access in the linked list -- build a table
199	 * of pointers.
200	 */
201	if (dp->entries > lastentries) {
202		lastentries = dp->entries;
203		if ((array =
204		    realloc(array, dp->entries * sizeof(FTSENT *))) == NULL) {
205			warn(NULL);
206			printscol(dp);
207		}
208	}
209	for (p = dp->list, num = 0; p; p = p->fts_link)
210		if (p->fts_number != NO_PRINT)
211			array[num++] = p;
212
213	colwidth = dp->maxlen;
214	if (f_inode)
215		colwidth += dp->s_inode + 1;
216	if (f_size)
217		colwidth += dp->s_block + 1;
218	if (f_type)
219		colwidth += 1;
220
221	colwidth = (colwidth + tabwidth) & ~(tabwidth - 1);
222	if (termwidth < 2 * colwidth) {
223		printscol(dp);
224		return;
225	}
226
227	numcols = termwidth / colwidth;
228	numrows = num / numcols;
229	if (num % numcols)
230		++numrows;
231
232	if (dp->list->fts_level != FTS_ROOTLEVEL && (f_longform || f_size))
233		(void)printf("total %lu\n", howmany(dp->btotal, blocksize));
234	for (row = 0; row < numrows; ++row) {
235		endcol = colwidth;
236		for (base = row, chcnt = col = 0; col < numcols; ++col) {
237			chcnt += printaname(array[base], dp->s_inode,
238			    dp->s_block);
239			if ((base += numrows) >= num)
240				break;
241#ifdef COLORLS
242			/*
243			 * some terminals get confused if we mix tabs
244			 * with color sequences
245			 */
246			if (f_color)
247				while ((cnt = (chcnt + 1)) <= endcol) {
248					(void)putchar(' ');
249					chcnt = cnt;
250				}
251			else
252#endif
253			while ((cnt = ((chcnt + tabwidth) & ~(tabwidth - 1)))
254			    <= endcol){
255				(void)putchar(f_notabs ? ' ' : '\t');
256				chcnt = cnt;
257			}
258			endcol += colwidth;
259		}
260		(void)putchar('\n');
261	}
262}
263
264/*
265 * print [inode] [size] name
266 * return # of characters printed, no trailing characters.
267 */
268static int
269printaname(p, inodefield, sizefield)
270	FTSENT *p;
271	u_long sizefield, inodefield;
272{
273	struct stat *sp;
274	int chcnt;
275#ifdef COLORLS
276	int color_printed = 0;
277#endif
278
279	sp = p->fts_statp;
280	chcnt = 0;
281	if (f_inode)
282		chcnt += printf("%*lu ", (int)inodefield, (u_long)sp->st_ino);
283	if (f_size)
284		chcnt += printf("%*qd ",
285		    (int)sizefield, howmany(sp->st_blocks, blocksize));
286#ifdef COLORLS
287	if (f_color)
288		color_printed = colortype(sp->st_mode);
289#endif
290	chcnt += (f_octal || f_octal_escape) ? prn_octal(p->fts_name)
291	                                     : printf("%s", p->fts_name);
292#ifdef COLORLS
293	if (f_color && color_printed)
294		endcolor();
295#endif
296	if (f_type)
297		chcnt += printtype(sp->st_mode);
298	return (chcnt);
299}
300
301static void
302printtime(ftime)
303	time_t ftime;
304{
305	int i;
306	char longstring[80];
307	static time_t now;
308
309	if (now == 0)
310		now = time(NULL);
311
312	strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
313	for (i = 4; i < 11; ++i)
314		(void)putchar(longstring[i]);
315
316#define	SIXMONTHS	((365 / 2) * 86400)
317	if (f_sectime)
318		for (i = 11; i < 24; i++)
319			(void)putchar(longstring[i]);
320	else if (ftime + SIXMONTHS > now && ftime < now + SIXMONTHS)
321		for (i = 11; i < 16; ++i)
322			(void)putchar(longstring[i]);
323	else {
324		(void)putchar(' ');
325		for (i = 20; i < 24; ++i)
326			(void)putchar(longstring[i]);
327	}
328	(void)putchar(' ');
329}
330
331static int
332printtype(mode)
333	u_int mode;
334{
335	switch (mode & S_IFMT) {
336	case S_IFDIR:
337		(void)putchar('/');
338		return (1);
339	case S_IFIFO:
340		(void)putchar('|');
341		return (1);
342	case S_IFLNK:
343		(void)putchar('@');
344		return (1);
345	case S_IFSOCK:
346		(void)putchar('=');
347		return (1);
348	case S_IFWHT:
349		(void)putchar('%');
350		return (1);
351	}
352	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
353		(void)putchar('*');
354		return (1);
355	}
356	return (0);
357}
358
359#ifdef COLORLS
360int putch(c)
361	int c;
362{
363	return putc(c, stdout);
364}
365
366
367void
368printcolor(c)
369       Colors c;
370{
371	char *ansiseq;
372
373	if (colors[c][0] != -1) {
374		ansiseq = tparm(ansi_fgcol, colors[c][0]);
375		if (ansiseq)
376			tputs(ansiseq, 1, putch);
377	}
378
379	if (colors[c][1] != -1) {
380		ansiseq = tparm(ansi_bgcol, colors[c][1]);
381		if (ansiseq)
382			tputs(ansiseq, 1, putch);
383	}
384}
385
386void
387endcolor()
388{
389	tputs(ansi_coloff, 1, putch);
390}
391
392int
393colortype(mode)
394       mode_t mode;
395{
396	switch(mode & S_IFMT) {
397	      case S_IFDIR:
398		if (mode & S_IWOTH)
399		    if (mode & S_ISTXT)
400			printcolor(C_WSDIR);
401		    else
402			printcolor(C_WDIR);
403		else
404		    printcolor(C_DIR);
405		return(1);
406	      case S_IFLNK:
407		printcolor(C_LNK);
408		return(1);
409	      case S_IFSOCK:
410		printcolor(C_SOCK);
411		return(1);
412	      case S_IFIFO:
413		printcolor(C_FIFO);
414		return(1);
415	      case S_IFBLK:
416		printcolor(C_BLK);
417		return(1);
418	      case S_IFCHR:
419		printcolor(C_CHR);
420		return(1);
421	}
422	if (mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
423		if (mode & S_ISUID)
424		    printcolor(C_SUID);
425		else if (mode & S_ISGID)
426		    printcolor(C_SGID);
427		else
428		    printcolor(C_EXEC);
429		return(1);
430	}
431	return(0);
432}
433
434void
435parsecolors(cs)
436char *cs;
437{
438	int i, j, len;
439	char c[2];
440	if (cs == NULL)    cs = ""; /* LSCOLORS not set */
441	len = strlen(cs);
442	for (i = 0 ; i < C_NUMCOLORS ; i++) {
443		if (len <= 2*i) {
444			c[0] = defcolors[2*i];
445			c[1] = defcolors[2*i+1];
446		}
447		else {
448			c[0] = cs[2*i];
449			c[1] = cs[2*i+1];
450		}
451		for (j = 0 ; j < 2 ; j++) {
452			if ((c[j] < '0' || c[j] > '7') &&
453			    tolower((unsigned char)c[j]) != 'x') {
454				fprintf(stderr,
455					"error: invalid character '%c' in LSCOLORS env var\n",
456					c[j]);
457				c[j] = defcolors[2*i+j];
458			}
459			if (c[j] == 'x')
460			    colors[i][j] = -1;
461			else
462			    colors[i][j] = c[j]-'0';
463		}
464	}
465}
466
467void colorquit(sig)
468	int sig;
469{
470	endcolor();
471	fflush(stdout);
472
473	(void) signal(sig, SIG_DFL);
474	(void) kill(getpid(), sig);
475}
476#endif /*COLORLS*/
477
478static void
479printlink(p)
480	FTSENT *p;
481{
482	int lnklen;
483	char name[MAXPATHLEN + 1], path[MAXPATHLEN + 1];
484
485	if (p->fts_level == FTS_ROOTLEVEL)
486		(void)snprintf(name, sizeof(name), "%s", p->fts_name);
487	else
488		(void)snprintf(name, sizeof(name),
489		    "%s/%s", p->fts_parent->fts_accpath, p->fts_name);
490	if ((lnklen = readlink(name, path, sizeof(path) - 1)) == -1) {
491		(void)fprintf(stderr, "\nls: %s: %s\n", name, strerror(errno));
492		return;
493	}
494	path[lnklen] = '\0';
495	if (f_octal || f_octal_escape) {
496	        (void)printf(" -> ");
497	        (void)prn_octal(path);
498	}
499	else (void)printf(" -> %s", path);
500}
501