GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/mg/file.c Lines: 0 356 0.0 %
Date: 2017-11-13 Branches: 0 239 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: file.c,v 1.100 2016/01/02 10:39:19 lum Exp $	*/
2
3
/* This file is in the public domain. */
4
5
/*
6
 *	File commands.
7
 */
8
9
#include <sys/queue.h>
10
#include <sys/stat.h>
11
#include <errno.h>
12
#include <libgen.h>
13
#include <signal.h>
14
#include <stdio.h>
15
#include <stdlib.h>
16
#include <string.h>
17
#include <unistd.h>
18
19
#include "def.h"
20
21
size_t xdirname(char *, const char *, size_t);
22
23
/*
24
 * Insert a file into the current buffer.  Real easy - just call the
25
 * insertfile routine with the file name.
26
 */
27
/* ARGSUSED */
28
int
29
fileinsert(int f, int n)
30
{
31
	char	 fname[NFILEN], *bufp, *adjf;
32
33
	if (getbufcwd(fname, sizeof(fname)) != TRUE)
34
		fname[0] = '\0';
35
	bufp = eread("Insert file: ", fname, NFILEN,
36
	    EFNEW | EFCR | EFFILE | EFDEF);
37
	if (bufp == NULL)
38
		return (ABORT);
39
	else if (bufp[0] == '\0')
40
		return (FALSE);
41
	adjf = adjustname(bufp, TRUE);
42
	if (adjf == NULL)
43
		return (FALSE);
44
	return (insertfile(adjf, NULL, FALSE));
45
}
46
47
/*
48
 * Select a file for editing.  If the file is a directory, invoke dired.
49
 * Otherwise, look around to see if you can find the file in another buffer;
50
 * if you can find it, just switch to the buffer.  If you cannot find the
51
 * file, create a new buffer, read in the text, and switch to the new buffer.
52
 */
53
/* ARGSUSED */
54
int
55
filevisit(int f, int n)
56
{
57
	struct buffer	*bp;
58
	char	 fname[NFILEN], *bufp, *adjf;
59
	int	 status;
60
61
	if (getbufcwd(fname, sizeof(fname)) != TRUE)
62
		fname[0] = '\0';
63
	bufp = eread("Find file: ", fname, NFILEN,
64
	    EFNEW | EFCR | EFFILE | EFDEF);
65
	if (bufp == NULL)
66
		return (ABORT);
67
	else if (bufp[0] == '\0')
68
		return (FALSE);
69
	adjf = adjustname(fname, TRUE);
70
	if (adjf == NULL)
71
		return (FALSE);
72
	if (fisdir(adjf) == TRUE)
73
		return (do_dired(adjf));
74
	if ((bp = findbuffer(adjf)) == NULL)
75
		return (FALSE);
76
	curbp = bp;
77
	if (showbuffer(bp, curwp, WFFULL) != TRUE)
78
		return (FALSE);
79
	if (bp->b_fname[0] == '\0') {
80
		if ((status = readin(adjf)) != TRUE)
81
			killbuffer(bp);
82
		return (status);
83
	}
84
	return (TRUE);
85
}
86
87
/*
88
 * Replace the current file with an alternate one. Semantics for finding
89
 * the replacement file are the same as 'filevisit', except the current
90
 * buffer is killed before the switch. If the kill fails, or is aborted,
91
 * revert to the original file.
92
 */
93
/* ARGSUSED */
94
int
95
filevisitalt(int f, int n)
96
{
97
	char	 fname[NFILEN], *bufp;
98
99
	if (getbufcwd(fname, sizeof(fname)) != TRUE)
100
		fname[0] = '\0';
101
	bufp = eread("Find alternate file: ", fname, NFILEN,
102
	    EFNEW | EFCR | EFFILE | EFDEF);
103
	if (bufp == NULL)
104
		return (ABORT);
105
	else if (bufp[0] == '\0')
106
		return (FALSE);
107
108
	return (do_filevisitalt(fname));
109
}
110
111
int
112
do_filevisitalt(char *fn)
113
{
114
	struct buffer	*bp;
115
	int		 status;
116
	char		*adjf;
117
118
	status = killbuffer(curbp);
119
	if (status == ABORT || status == FALSE)
120
		return (ABORT);
121
122
	adjf = adjustname(fn, TRUE);
123
	if (adjf == NULL)
124
		return (FALSE);
125
	if (fisdir(adjf) == TRUE)
126
		return (do_dired(adjf));
127
	if ((bp = findbuffer(adjf)) == NULL)
128
		return (FALSE);
129
	curbp = bp;
130
	if (showbuffer(bp, curwp, WFFULL) != TRUE)
131
		return (FALSE);
132
	if (bp->b_fname[0] == '\0') {
133
		if ((status = readin(adjf)) != TRUE)
134
			killbuffer(bp);
135
		return (status);
136
	}
137
	return (TRUE);
138
}
139
140
int
141
filevisitro(int f, int n)
142
{
143
	int error;
144
145
	error = filevisit(f, n);
146
	if (error != TRUE)
147
		return (error);
148
	curbp->b_flag |= BFREADONLY;
149
	return (TRUE);
150
}
151
152
/*
153
 * Pop to a file in the other window.  Same as the last function, but uses
154
 * popbuf instead of showbuffer.
155
 */
156
/* ARGSUSED */
157
int
158
poptofile(int f, int n)
159
{
160
	struct buffer	*bp;
161
	struct mgwin	*wp;
162
	char	 fname[NFILEN], *adjf, *bufp;
163
	int	 status;
164
165
	if (getbufcwd(fname, sizeof(fname)) != TRUE)
166
		fname[0] = '\0';
167
	if ((bufp = eread("Find file in other window: ", fname, NFILEN,
168
	    EFNEW | EFCR | EFFILE | EFDEF)) == NULL)
169
		return (ABORT);
170
	else if (bufp[0] == '\0')
171
		return (FALSE);
172
	adjf = adjustname(fname, TRUE);
173
	if (adjf == NULL)
174
		return (FALSE);
175
	if (fisdir(adjf) == TRUE)
176
		return (do_dired(adjf));
177
	if ((bp = findbuffer(adjf)) == NULL)
178
		return (FALSE);
179
	if (bp == curbp)
180
		return (splitwind(f, n));
181
	if ((wp = popbuf(bp, WNONE)) == NULL)
182
		return (FALSE);
183
	curbp = bp;
184
	curwp = wp;
185
	if (bp->b_fname[0] == '\0') {
186
		if ((status = readin(adjf)) != TRUE)
187
			killbuffer(bp);
188
		return (status);
189
	}
190
	return (TRUE);
191
}
192
193
/*
194
 * Read the file "fname" into the current buffer.  Make all of the text
195
 * in the buffer go away, after checking for unsaved changes.  This is
196
 * called by the "read" command, the "visit" command, and the mainline
197
 * (for "mg file").
198
 */
199
int
200
readin(char *fname)
201
{
202
	struct mgwin	*wp;
203
	struct stat	 statbuf;
204
	int	 status, i, ro = FALSE;
205
	PF	*ael;
206
	char	 dp[NFILEN];
207
208
	/* might be old */
209
	if (bclear(curbp) != TRUE)
210
		return (TRUE);
211
	/* Clear readonly. May be set by autoexec path */
212
	curbp->b_flag &= ~BFREADONLY;
213
	if ((status = insertfile(fname, fname, TRUE)) != TRUE) {
214
		dobeep();
215
		ewprintf("File is not readable: %s", fname);
216
		return (FALSE);
217
	}
218
219
	for (wp = wheadp; wp != NULL; wp = wp->w_wndp) {
220
		if (wp->w_bufp == curbp) {
221
			wp->w_dotp = wp->w_linep = bfirstlp(curbp);
222
			wp->w_doto = 0;
223
			wp->w_markp = NULL;
224
			wp->w_marko = 0;
225
		}
226
	}
227
228
	/*
229
	 * Call auto-executing function if we need to.
230
	 */
231
	if ((ael = find_autoexec(fname)) != NULL) {
232
		for (i = 0; ael[i] != NULL; i++)
233
			(*ael[i])(0, 1);
234
		free(ael);
235
	}
236
237
	/* no change */
238
	curbp->b_flag &= ~BFCHG;
239
240
	/*
241
	 * Set the buffer READONLY flag if any of following are true:
242
	 *   1. file is a directory.
243
	 *   2. file is read-only.
244
	 *   3. file doesn't exist and directory is read-only.
245
	 */
246
	if (fisdir(fname) == TRUE) {
247
		ro = TRUE;
248
	} else if ((access(fname, W_OK) == -1)) {
249
		if (errno != ENOENT) {
250
			ro = TRUE;
251
		} else if (errno == ENOENT) {
252
			(void)xdirname(dp, fname, sizeof(dp));
253
			(void)strlcat(dp, "/", sizeof(dp));
254
255
			/* Missing directory; keep buffer rw, like emacs */
256
			if (stat(dp, &statbuf) == -1 && errno == ENOENT) {
257
				if (eyorn("Missing directory, create") == TRUE)
258
					(void)do_makedir(dp);
259
			} else if (access(dp, W_OK) == -1 && errno == EACCES) {
260
				ewprintf("File not found and directory"
261
				    " write-protected");
262
				ro = TRUE;
263
			}
264
		}
265
	}
266
	if (ro == TRUE)
267
		curbp->b_flag |= BFREADONLY;
268
269
	if (startrow) {
270
		gotoline(FFARG, startrow);
271
		startrow = 0;
272
	}
273
274
	undo_add_modified();
275
	return (status);
276
}
277
278
/*
279
 * NB, getting file attributes is done here under control of a flag
280
 * rather than in readin, which would be cleaner.  I was concerned
281
 * that some operating system might require the file to be open
282
 * in order to get the information.  Similarly for writing.
283
 */
284
285
/*
286
 * Insert a file in the current buffer, after dot. If file is a directory,
287
 * and 'replacebuf' is TRUE, invoke dired mode, else die with an error.
288
 * If file is a regular file, set mark at the end of the text inserted;
289
 * point at the beginning.  Return a standard status. Print a summary
290
 * (lines read, error message) out as well. This routine also does the
291
 * read end of backup processing.  The BFBAK flag, if set in a buffer,
292
 * says that a backup should be taken.  It is set when a file is read in,
293
 * but not on a new file. You don't need to make a backup copy of nothing.
294
 */
295
296
static char	*line = NULL;
297
static int	linesize = 0;
298
299
int
300
insertfile(char *fname, char *newname, int replacebuf)
301
{
302
	struct buffer	*bp;
303
	struct line	*lp1, *lp2;
304
	struct line	*olp;			/* line we started at */
305
	struct mgwin	*wp;
306
	int	 nbytes, s, nline = 0, siz, x, x2;
307
	int	 opos;			/* offset we started at */
308
	int	 oline;			/* original line number */
309
        FILE    *ffp;
310
311
	if (replacebuf == TRUE)
312
		x = undo_enable(FFRAND, 0);
313
	else
314
		x = undo_enabled();
315
316
	lp1 = NULL;
317
	if (line == NULL) {
318
		line = malloc(NLINE);
319
		if (line == NULL)
320
			panic("out of memory");
321
		linesize = NLINE;
322
	}
323
324
	/* cheap */
325
	bp = curbp;
326
	if (newname != NULL) {
327
		(void)strlcpy(bp->b_fname, newname, sizeof(bp->b_fname));
328
		(void)xdirname(bp->b_cwd, newname, sizeof(bp->b_cwd));
329
		(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd));
330
	}
331
332
	/* hard file open */
333
	if ((s = ffropen(&ffp, fname, (replacebuf == TRUE) ? bp : NULL))
334
	    == FIOERR)
335
		goto out;
336
	if (s == FIOFNF) {
337
		/* file not found */
338
		if (newname != NULL)
339
			ewprintf("(New file)");
340
		else
341
			ewprintf("(File not found)");
342
		goto out;
343
	} else if (s == FIODIR) {
344
		/* file was a directory */
345
		if (replacebuf == FALSE) {
346
			dobeep();
347
			ewprintf("Cannot insert: file is a directory, %s",
348
			    fname);
349
			goto cleanup;
350
		}
351
		killbuffer(bp);
352
		bp = dired_(fname);
353
		undo_enable(FFRAND, x);
354
		if (bp == NULL)
355
			return (FALSE);
356
		curbp = bp;
357
		return (showbuffer(bp, curwp, WFFULL | WFMODE));
358
	} else {
359
		(void)xdirname(bp->b_cwd, fname, sizeof(bp->b_cwd));
360
		(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd));
361
	}
362
	opos = curwp->w_doto;
363
	oline = curwp->w_dotline;
364
	/*
365
	 * Open a new line at dot and start inserting after it.
366
	 * We will delete this newline after insertion.
367
	 * Disable undo, as we create the undo record manually.
368
	 */
369
	x2 = undo_enable(FFRAND, 0);
370
	(void)lnewline();
371
	olp = lback(curwp->w_dotp);
372
	undo_enable(FFRAND, x2);
373
374
	nline = 0;
375
	siz = 0;
376
	while ((s = ffgetline(ffp, line, linesize, &nbytes)) != FIOERR) {
377
retry:
378
		siz += nbytes + 1;
379
		switch (s) {
380
		case FIOSUC:
381
			/* FALLTHRU */
382
		case FIOEOF:
383
			++nline;
384
			if ((lp1 = lalloc(nbytes)) == NULL) {
385
				/* keep message on the display */
386
				s = FIOERR;
387
				undo_add_insert(olp, opos,
388
				    siz - nbytes - 1 - 1);
389
				goto endoffile;
390
			}
391
			bcopy(line, &ltext(lp1)[0], nbytes);
392
			lp2 = lback(curwp->w_dotp);
393
			lp2->l_fp = lp1;
394
			lp1->l_fp = curwp->w_dotp;
395
			lp1->l_bp = lp2;
396
			curwp->w_dotp->l_bp = lp1;
397
			if (s == FIOEOF) {
398
				undo_add_insert(olp, opos, siz - 1);
399
				goto endoffile;
400
			}
401
			break;
402
		case FIOLONG: {
403
				/* a line too long to fit in our buffer */
404
				char	*cp;
405
				int	newsize;
406
407
				newsize = linesize * 2;
408
				if (newsize < 0 ||
409
				    (cp = malloc(newsize)) == NULL) {
410
					dobeep();
411
					ewprintf("Could not allocate %d bytes",
412
					    newsize);
413
						s = FIOERR;
414
						goto endoffile;
415
				}
416
				bcopy(line, cp, linesize);
417
				free(line);
418
				line = cp;
419
				s = ffgetline(ffp, line + linesize, linesize,
420
				    &nbytes);
421
				nbytes += linesize;
422
				linesize = newsize;
423
				if (s == FIOERR)
424
					goto endoffile;
425
				goto retry;
426
			}
427
		default:
428
			dobeep();
429
			ewprintf("Unknown code %d reading file", s);
430
			s = FIOERR;
431
			break;
432
		}
433
	}
434
endoffile:
435
	/* ignore errors */
436
	(void)ffclose(ffp, NULL);
437
	/* don't zap an error */
438
	if (s == FIOEOF) {
439
		if (nline == 1)
440
			ewprintf("(Read 1 line)");
441
		else
442
			ewprintf("(Read %d lines)", nline);
443
	}
444
	/* set mark at the end of the text */
445
	curwp->w_dotp = curwp->w_markp = lback(curwp->w_dotp);
446
	curwp->w_marko = llength(curwp->w_markp);
447
	curwp->w_markline = oline + nline + 1;
448
	/*
449
	 * if we are at the end of the file, ldelnewline is a no-op,
450
	 * but we still need to decrement the line and markline counts
451
	 * as we've accounted for this fencepost in our arithmetic
452
	 */
453
	if (lforw(curwp->w_dotp) == curwp->w_bufp->b_headp) {
454
		curwp->w_bufp->b_lines--;
455
		curwp->w_markline--;
456
	} else
457
		(void)ldelnewline();
458
	curwp->w_dotp = olp;
459
	curwp->w_doto = opos;
460
	curwp->w_dotline = oline;
461
	if (olp == curbp->b_headp)
462
		curwp->w_dotp = lforw(olp);
463
	if (newname != NULL)
464
		bp->b_flag |= BFCHG | BFBAK;	/* Need a backup.	 */
465
	else
466
		bp->b_flag |= BFCHG;
467
	/*
468
	 * If the insert was at the end of buffer, set lp1 to the end of
469
	 * buffer line, and lp2 to the beginning of the newly inserted text.
470
	 * (Otherwise lp2 is set to NULL.)  This is used below to set
471
	 * pointers in other windows correctly if they are also at the end of
472
	 * buffer.
473
	 */
474
	lp1 = bp->b_headp;
475
	if (curwp->w_markp == lp1) {
476
		lp2 = curwp->w_dotp;
477
	} else {
478
		/* delete extraneous newline */
479
		(void)ldelnewline();
480
out:		lp2 = NULL;
481
	}
482
	for (wp = wheadp; wp != NULL; wp = wp->w_wndp) {
483
		if (wp->w_bufp == curbp) {
484
			wp->w_rflag |= WFMODE | WFEDIT;
485
			if (wp != curwp && lp2 != NULL) {
486
				if (wp->w_dotp == lp1)
487
					wp->w_dotp = lp2;
488
				if (wp->w_markp == lp1)
489
					wp->w_markp = lp2;
490
				if (wp->w_linep == lp1)
491
					wp->w_linep = lp2;
492
			}
493
		}
494
	}
495
	bp->b_lines += nline;
496
cleanup:
497
	undo_enable(FFRAND, x);
498
499
	/* return FALSE if error */
500
	return (s != FIOERR);
501
}
502
503
/*
504
 * Ask for a file name and write the contents of the current buffer to that
505
 * file.  Update the remembered file name and clear the buffer changed flag.
506
 * This handling of file names is different from the earlier versions and
507
 * is more compatible with Gosling EMACS than with ITS EMACS.
508
 */
509
/* ARGSUSED */
510
int
511
filewrite(int f, int n)
512
{
513
	struct stat     statbuf;
514
	int	 s;
515
	char	 fname[NFILEN], bn[NBUFN], tmp[NFILEN + 25];
516
	char	*adjfname, *bufp;
517
        FILE    *ffp;
518
519
	if (getbufcwd(fname, sizeof(fname)) != TRUE)
520
		fname[0] = '\0';
521
	if ((bufp = eread("Write file: ", fname, NFILEN,
522
	    EFDEF | EFNEW | EFCR | EFFILE)) == NULL)
523
		return (ABORT);
524
	else if (bufp[0] == '\0')
525
		return (FALSE);
526
527
	adjfname = adjustname(fname, TRUE);
528
	if (adjfname == NULL)
529
		return (FALSE);
530
531
        /* Check if file exists; write checks done later */
532
        if (stat(adjfname, &statbuf) == 0) {
533
		if (S_ISDIR(statbuf.st_mode)) {
534
			dobeep();
535
			ewprintf("%s is a directory", adjfname);
536
			return (FALSE);
537
		}
538
		snprintf(tmp, sizeof(tmp), "File `%s' exists; overwrite",
539
		    adjfname);
540
		if ((s = eyorn(tmp)) != TRUE)
541
                        return (s);
542
        }
543
544
	/* old attributes are no longer current */
545
	bzero(&curbp->b_fi, sizeof(curbp->b_fi));
546
	if ((s = writeout(&ffp, curbp, adjfname)) == TRUE) {
547
		(void)strlcpy(curbp->b_fname, adjfname, sizeof(curbp->b_fname));
548
		if (getbufcwd(curbp->b_cwd, sizeof(curbp->b_cwd)) != TRUE)
549
			(void)strlcpy(curbp->b_cwd, "/", sizeof(curbp->b_cwd));
550
		if (augbname(bn, curbp->b_fname, sizeof(bn))
551
		    == FALSE)
552
			return (FALSE);
553
		free(curbp->b_bname);
554
		if ((curbp->b_bname = strdup(bn)) == NULL)
555
			return (FALSE);
556
		(void)fupdstat(curbp);
557
		curbp->b_flag &= ~(BFBAK | BFCHG);
558
		upmodes(curbp);
559
		undo_add_boundary(FFRAND, 1);
560
		undo_add_modified();
561
	}
562
	return (s);
563
}
564
565
/*
566
 * Save the contents of the current buffer back into its associated file.
567
 */
568
static int	makebackup = TRUE;
569
570
/* ARGSUSED */
571
int
572
filesave(int f, int n)
573
{
574
	if (curbp->b_fname[0] == '\0')
575
		return (filewrite(f, n));
576
	else
577
		return (buffsave(curbp));
578
}
579
580
/*
581
 * Save the contents of the buffer argument into its associated file.  Do
582
 * nothing if there have been no changes (is this a bug, or a feature?).
583
 * Error if there is no remembered file name. If this is the first write
584
 * since the read or visit, then a backup copy of the file is made.
585
 * Allow user to select whether or not to make backup files by looking at
586
 * the value of makebackup.
587
 */
588
int
589
buffsave(struct buffer *bp)
590
{
591
	int	 s;
592
        FILE    *ffp;
593
594
	/* return, no changes */
595
	if ((bp->b_flag & BFCHG) == 0) {
596
		ewprintf("(No changes need to be saved)");
597
		return (TRUE);
598
	}
599
600
	/* must have a name */
601
	if (bp->b_fname[0] == '\0') {
602
		dobeep();
603
		ewprintf("No file name");
604
		return (FALSE);
605
	}
606
607
	/* Ensure file has not been modified elsewhere */
608
	/* We don't use the ignore flag here */
609
	if (fchecktime(bp) != TRUE) {
610
		if ((s = eyesno("File has changed on disk since last save. "
611
		    "Save anyway")) != TRUE)
612
			return (s);
613
	}
614
615
	if (makebackup && (bp->b_flag & BFBAK)) {
616
		s = fbackupfile(bp->b_fname);
617
		/* hard error */
618
		if (s == ABORT)
619
			return (FALSE);
620
		/* softer error */
621
		if (s == FALSE &&
622
		    (s = eyesno("Backup error, save anyway")) != TRUE)
623
			return (s);
624
	}
625
	if ((s = writeout(&ffp, bp, bp->b_fname)) == TRUE) {
626
		(void)fupdstat(bp);
627
		bp->b_flag &= ~(BFCHG | BFBAK);
628
		upmodes(bp);
629
		undo_add_boundary(FFRAND, 1);
630
		undo_add_modified();
631
	}
632
	return (s);
633
}
634
635
/*
636
 * Since we don't have variables (we probably should) this is a command
637
 * processor for changing the value of the make backup flag.  If no argument
638
 * is given, sets makebackup to true, so backups are made.  If an argument is
639
 * given, no backup files are made when saving a new version of a file.
640
 */
641
/* ARGSUSED */
642
int
643
makebkfile(int f, int n)
644
{
645
	if (f & FFARG)
646
		makebackup = n > 0;
647
	else
648
		makebackup = !makebackup;
649
	ewprintf("Backup files %sabled", makebackup ? "en" : "dis");
650
	return (TRUE);
651
}
652
653
/*
654
 * NB: bp is passed to both ffwopen and ffclose because some
655
 * attribute information may need to be updated at open time
656
 * and others after the close.  This is OS-dependent.  Note
657
 * that the ff routines are assumed to be able to tell whether
658
 * the attribute information has been set up in this buffer
659
 * or not.
660
 */
661
662
/*
663
 * This function performs the details of file writing; writing the file
664
 * in buffer bp to file fn. Uses the file management routines in the
665
 * "fileio.c" package. Most of the grief is checking of some sort.
666
 * You may want to call fupdstat() after using this function.
667
 */
668
int
669
writeout(FILE ** ffp, struct buffer *bp, char *fn)
670
{
671
	struct stat	statbuf;
672
	int	 s;
673
	char     dp[NFILEN];
674
675
	if (stat(fn, &statbuf) == -1 && errno == ENOENT) {
676
		errno = 0;
677
		(void)xdirname(dp, fn, sizeof(dp));
678
		(void)strlcat(dp, "/", sizeof(dp));
679
		if (access(dp, W_OK) && errno == EACCES) {
680
			dobeep();
681
			ewprintf("Directory %s write-protected", dp);
682
			return (FIOERR);
683
		} else if (errno == ENOENT) {
684
   			dobeep();
685
			ewprintf("%s: no such directory", dp);
686
			return (FIOERR);
687
		}
688
        }
689
	/* open writes message */
690
	if ((s = ffwopen(ffp, fn, bp)) != FIOSUC)
691
		return (FALSE);
692
	s = ffputbuf(*ffp, bp);
693
	if (s == FIOSUC) {
694
		/* no write error */
695
		s = ffclose(*ffp, bp);
696
		if (s == FIOSUC)
697
			ewprintf("Wrote %s", fn);
698
	} else {
699
		/* print a message indicating write error */
700
		(void)ffclose(*ffp, bp);
701
		dobeep();
702
		ewprintf("Unable to write %s", fn);
703
	}
704
	return (s == FIOSUC);
705
}
706
707
/*
708
 * Tag all windows for bp (all windows if bp == NULL) as needing their
709
 * mode line updated.
710
 */
711
void
712
upmodes(struct buffer *bp)
713
{
714
	struct mgwin	*wp;
715
716
	for (wp = wheadp; wp != NULL; wp = wp->w_wndp)
717
		if (bp == NULL || curwp->w_bufp == bp)
718
			wp->w_rflag |= WFMODE;
719
}
720
721
/*
722
 * dirname using strlcpy semantic.
723
 * Like dirname() except an empty string is returned in
724
 * place of "/". This means we can always add a trailing
725
 * slash and be correct.
726
 * Address portability issues by copying argument
727
 * before using. Some implementations modify the input string.
728
 */
729
size_t
730
xdirname(char *dp, const char *path, size_t dplen)
731
{
732
	char ts[NFILEN];
733
	size_t len;
734
735
	(void)strlcpy(ts, path, NFILEN);
736
	len = strlcpy(dp, dirname(ts), dplen);
737
	if (dplen > 0 && dp[0] == '/' && dp[1] == '\0') {
738
		dp[0] = '\0';
739
		len = 0;
740
	}
741
	return (len);
742
}
743
744
/*
745
 * basename using strlcpy/strlcat semantic.
746
 * Address portability issue by copying argument
747
 * before using: some implementations modify the input string.
748
 */
749
size_t
750
xbasename(char *bp, const char *path, size_t bplen)
751
{
752
	char ts[NFILEN];
753
754
	(void)strlcpy(ts, path, NFILEN);
755
	return (strlcpy(bp, basename(ts), bplen));
756
}
757
758
/*
759
 * The adjusted file name refers to a directory, so open dired mode.
760
 */
761
int
762
do_dired(char *adjf)
763
{
764
	struct buffer	*bp;
765
766
	if ((bp = dired_(adjf)) == FALSE)
767
		return (FALSE);
768
	curbp = bp;
769
	return (showbuffer(bp, curwp, WFFULL | WFMODE));
770
}