summaryrefslogtreecommitdiff
path: root/pico/main.c
blob: ac5bc38893a69f54e9c44e95826c1e9e4f90785b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
#if	!defined(lint) && !defined(DOS)
static char rcsid[] = "$Id: main.c 1184 2008-12-16 23:52:15Z hubert@u.washington.edu $";
#endif

/*
 * ========================================================================
 * Copyright 2006-2008 University of Washington
 * Copyright 2013 Eduardo Chappa
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * ========================================================================
 */

/*
 * Program:	Main stand-alone Pine Composer routines
 *
 *
 * WEEMACS/PICO NOTES:
 *
 * 08 Jan 92 - removed PINE defines to simplify compiling
 *
 * 08 Apr 92 - removed PINE stub calls
 *
 */

#include	"headers.h"
#include	"../c-client/mail.h"
#include	"../c-client/rfc822.h"
#include	"../pith/osdep/collate.h"
#include	"../pith/charconv/filesys.h"
#include	"../pith/charconv/utf8.h"
#include	"../pith/conf.h"


/*
 * Useful internal prototypes
 */
#ifdef	_WINDOWS
int	pico_file_drop(int, int, char *);
#endif

/*
 * this isn't defined in the library, because it's a pine global
 * which we use for GetKey's timeout
 */
int	timeoutset = 0;


int	 my_timer_period = (300 * 1000);

/*
 * function key mappings
 */
static UCS fkm[12][2] = {
    { F1,  (CTRL|'G')},
    { F2,  (CTRL|'X')},
    { F3,  (CTRL|'O')},
    { F4,  (CTRL|'J')},
    { F5,  (CTRL|'R')},
    { F6,  (CTRL|'W')},
    { F7,  (CTRL|'Y')},
    { F8,  (CTRL|'V')},
    { F9,  (CTRL|'K')},
    { F10, (CTRL|'U')},
    { F11, (CTRL|'C')},
#ifdef	SPELLER
    { F12, (CTRL|'T')}
#else
    { F12, (CTRL|'D')}
#endif
};

char *pico_args(int, char **, int *, int *, int *);
void  pico_args_help(void);
void  pico_vers_help(void);
void  pico_display_args_err(char *, char **, int);

/* TRANSLATORS: An error message about an unknown flag (option)
   on the command line */
char  args_pico_missing_flag[]  = N_("unknown flag \"%c\"");
/* TRANSLATORS: error message about command line */
char  args_pico_missing_arg[]   = N_("missing or empty argument to \"%c\" flag");
char  args_pico_missing_num[]   = N_("non numeric argument for \"%c\" flag");
char  args_pico_missing_color[] = N_("missing color for \"%s\" flag");
char  args_pico_missing_charset[] = N_("missing character set for \"%s\" flag");
char  args_pico_input_charset[] = N_("input character set \"%s\" is unsupported");
char  args_pico_output_charset[] = N_("output character set \"%s\" is unsupported");

char *args_pico_args[] = {
/* TRANSLATORS: little help printed out when incorrect arguments
   are given to pico program. */
N_("Possible Starting Arguments for Pico editor:"),
"",
N_("\tArgument\t\tMeaning"),
N_("\t -e \t\tComplete - allow file name completion"),
N_("\t -k \t\tCut - let ^K cut from cursor position to end of line"),
N_("\t -a \t\tShowDot - show dot files in file browser"),
N_("\t -j \t\tGoto - allow 'Goto' command in file browser"),
N_("\t -g \t\tShow - show cursor in file browser"),
N_("\t -m \t\tMouse - turn on mouse support"),
N_("\t -x \t\tNoKeyhelp - suppress keyhelp"),
N_("\t -p \t\tPreserveStartStop - preserve \"start\"(^Q) and \"stop\"(^S) characters"),
N_("\t -q \t\tTermdefWins - termcap or terminfo takes precedence over defaults"),
N_("\t -Q <quotestr> \tSet quote string (eg. \"> \") esp. for composing email"),
N_("\t -d \t\tRebind - let delete key delete current character"),
N_("\t -f \t\tKeys - force use of function keys"),
N_("\t -b \t\tReplace - allow search and replace"),
N_("\t -h \t\tHelp - give this list of options"),
N_("\t -r[#cols] \tFill - set fill column to #cols columns, default=72"),
N_("\t -n[#s] \tMail - notify about new mail every #s seconds, default=180"),
N_("\t -s <speller> \tSpeller - specify alternative speller"),
N_("\t -t \t\tShutdown - enable special shutdown mode"),
N_("\t -o <dir>\tOperation - specify the operating directory"),
N_("\t -z \t\tSuspend - allow use of ^Z suspension"),
N_("\t -w \t\tNoWrap - turn off word wrap"),
N_("\t -W <wordseps> \tSet word separators other than whitespace"),
#ifndef	_WINDOWS
N_("\t -dcs <display_character_set> \tdefault uses LANG or LC_CTYPE from environment"),
N_("\t -kcs <keyboard_character_set> \tdefaults to display_character_set"),
N_("\t -syscs\t\tuse system-supplied translation routines"),
#endif	/* ! _WINDOWS */
#ifdef	_WINDOWS
N_("\t -cnf color \tforeground color"),
N_("\t -cnb color \tbackground color"),
N_("\t -crf color \treverse foreground color"),
N_("\t -crb color \treverse background color"),
#endif	/* _WINDOWS */
N_("\t +[line#] \tLine - start on line# line, default=1"),
N_("\t -v \t\tView - view file"),
N_("\t -no_setlocale_collate\tdo not do setlocale(LC_COLLATE)"),
N_("\t -version\tPico version number"),
"", 
N_("\t All arguments may be followed by a file name to display."),
"",
NULL
};


/*
 * main standalone pico routine
 */
#ifdef _WINDOWS
int
app_main (int argc, char *argv[])
#else
int
main(int argc, char *argv[])
#endif
{
    UCS      c;
    register int    f;
    register int    n;
    register BUFFER *bp;
    int	     viewflag = FALSE;		/* are we starting in view mode?*/
    int	     starton = 0;		/* where's dot to begin with?	*/
    int      setlocale_collate = 1;
    char     bname[NBUFN];		/* buffer name of file to read	*/
    char    *file_to_edit = NULL;
    char    *display_charmap = NULL, *dc;
    char    *keyboard_charmap = NULL;
    int      use_system = 0;
    char    *err = NULL;

    set_input_timeout(600);
    Pmaster = NULL;     		/* turn OFF composer functionality */
    km_popped = 0;

    /*
     * Read command line flags before initializing, otherwise, we never
     * know to init for f_keys...
     */
    file_to_edit = pico_args(argc, argv, &starton, &viewflag, &setlocale_collate);

    set_collation(setlocale_collate, 1);

#define cpstr(s) strcpy((char *)fs_get(1+strlen(s)), s)

#ifdef	_WINDOWS	
    init_utf8_display(1, NULL);
#else	/* UNIX */


    if(display_character_set)
      display_charmap = cpstr(display_character_set);
#if   HAVE_LANGINFO_H && defined(CODESET)
    else if((dc = nl_langinfo_codeset_wrapper()) != NULL)
      display_charmap = cpstr(dc);
#endif

    if(!display_charmap)
      display_charmap = cpstr("US-ASCII");

    if(keyboard_character_set)
      keyboard_charmap = cpstr(keyboard_character_set);
    else
      keyboard_charmap = cpstr(display_charmap);


    if(use_system_translation){
#if	PREREQ_FOR_SYS_TRANSLATION
	use_system++;
	/* This modifies its arguments */
	if(setup_for_input_output(use_system, &display_charmap, &keyboard_charmap,
				  &input_cs, &err) == -1){
	    fprintf(stderr, "%s\n", err ? err : "trouble with character set");
	    exit(1);
	}
	else if(err){
	    fprintf(stderr, "%s\n", err);
	    fs_give((void **) &err);
	}
#endif
    }

    if(!use_system){
	if(setup_for_input_output(use_system, &display_charmap, &keyboard_charmap,
				  &input_cs, &err) == -1){
	    fprintf(stderr, "%s\n", err ? err : "trouble with character set");
	    exit(1);
	}
	else if(err){
	    fprintf(stderr, "%s\n", err);
	    fs_give((void **) &err);
	}
    }

    if(keyboard_charmap){
	set_locale_charmap(keyboard_charmap);
	free((void *) keyboard_charmap);
    }

    if(display_charmap)
      free((void *) display_charmap);

#endif	/* UNIX */

    /*
     * There are a couple arguments that we need to be sure
     * are converted for internal use.
     */
    if(alt_speller)
      alt_speller = cpstr(fname_to_utf8(alt_speller));

    if(opertree && opertree[0]){
	strncpy(opertree, fname_to_utf8(opertree), sizeof(opertree));
	opertree[sizeof(opertree)-1] = '\0';
    }

    if(glo_quote_str_orig)
      glo_quote_str = utf8_to_ucs4_cpystr(fname_to_utf8(glo_quote_str_orig));

    if(glo_wordseps_orig)
      glo_wordseps = utf8_to_ucs4_cpystr(fname_to_utf8(glo_wordseps_orig));

    if(file_to_edit)
      file_to_edit = cpstr(fname_to_utf8(file_to_edit));

#undef cpstr

#if	defined(DOS) || defined(OS2)
    if(file_to_edit){			/* strip quotes? */
	int   l;

	if(strchr("'\"", file_to_edit[0])
	   && (l = strlen(file_to_edit)) > 1
	   && file_to_edit[l-1] == file_to_edit[0]){
	    file_to_edit[l-1] = '\0';	/* blat trailing quote */
	    file_to_edit++;		/* advance past leading quote */
	}
    }
#endif

    if(!vtinit())			/* Displays.            */
	exit(1);

    strncpy(bname, "main", sizeof(bname));		/* default buffer name */
    bname[sizeof(bname)-1] = '\0';
    edinit(bname);			/* Buffers, windows.   */

    update();				/* let the user know we are here */

#ifdef	_WINDOWS
    mswin_setwindow(NULL, NULL, NULL, NULL, NULL, NULL);
    mswin_showwindow();
    mswin_showcaret(1);			/* turn on for main window */
    mswin_allowpaste(MSWIN_PASTE_FULL);
    mswin_setclosetext("Use the ^X command to exit Pico.");
    mswin_setscrollcallback (pico_scroll_callback);
#endif

#if	defined(USE_TERMCAP) || defined(USE_TERMINFO) || defined(VMS)
    if(kbesc == NULL){			/* will arrow keys work ? */
	(*term.t_putchar)('\007');
	emlwrite("Warning: keypad keys may be non-functional", NULL);
    }
#endif	/* USE_TERMCAP/USE_TERMINFO/VMS */

    if(file_to_edit){			/* Any file to edit? */

	makename(bname, file_to_edit);	/* set up a buffer for this file */

	bp = curbp;			/* read in first file */
	makename(bname, file_to_edit);
	strncpy(bp->b_bname, bname, sizeof(bp->b_bname));
	bp->b_bname[sizeof(bp->b_bname)-1] = '\0';

	if(strlen(file_to_edit) >= NFILEN){
	    char buf[128];

	    snprintf(buf, sizeof(buf), "Filename \"%.10s...\" too long", file_to_edit);
	    emlwrite(buf, NULL);
	    file_to_edit = NULL;
	}
	else{
	    strncpy(bp->b_fname, file_to_edit, sizeof(bp->b_fname));
	    bp->b_fname[sizeof(bp->b_fname)-1] = '\0';
	    if (((gmode&MDTREE) && !in_oper_tree(file_to_edit)) ||
		readin(file_to_edit, (viewflag==FALSE), TRUE) == ABORT) {
		if ((gmode&MDTREE) && !in_oper_tree(file_to_edit)){
		    EML eml;
		    eml.s = opertree;
		    emlwrite(_("Can't read file from outside of %s"), &eml);
		}

		file_to_edit = NULL;
	    }
	}

	if(!file_to_edit){
	    strncpy(bp->b_bname, "main", sizeof(bp->b_bname));
	    bp->b_bname[sizeof(bp->b_bname)-1] = '\0';
	    strncpy(bp->b_fname, "", sizeof(bp->b_fname));
	    bp->b_fname[sizeof(bp->b_fname)-1] = '\0';
	}

	bp->b_dotp = bp->b_linep;
	bp->b_doto = 0;

	if (viewflag)			/* set the view mode */
	  bp->b_mode |= MDVIEW;
    }

    /* setup to process commands */
    lastflag = 0;			/* Fake last flags.     */
    curbp->b_mode |= gmode;		/* and set default modes*/

    curwp->w_flag |= WFMODE;		/* and force an update	*/

    if(timeoutset){
	EML eml;

	eml.s = comatose(get_input_timeout());
	emlwrite(_("Checking for new mail every %s seconds"), &eml);
    }


    forwline(0, starton - 1);		/* move dot to specified line */

    while(1){

	if(km_popped){
	    km_popped--;
	    if(km_popped == 0) /* cause bottom three lines to be repainted */
	      curwp->w_flag |= WFHARD;
	}

	if(km_popped){  /* temporarily change to cause menu to be painted */
	    term.t_mrow = 2;
	    curwp->w_ntrows -= 2;
	    curwp->w_flag |= WFMODE;
	    movecursor(term.t_nrow-2, 0); /* clear status line, too */
	    peeol();
	}

	update();			/* Fix up the screen    */
	if(km_popped){
	    term.t_mrow = 0;
	    curwp->w_ntrows += 2;
	}

#ifdef	MOUSE
#ifdef  EX_MOUSE
	/* New mouse function for real mouse text seletion. */
	register_mfunc(mouse_in_pico, 2, 0, term.t_nrow - (term.t_mrow + 1),
		       term.t_ncol);
#else
	mouse_in_content(KEY_MOUSE, -1, -1, 0, 0);
	register_mfunc(mouse_in_content, 2, 0, term.t_nrow - (term.t_mrow + 1),
		       term.t_ncol);
#endif
#endif
#ifdef	_WINDOWS
	mswin_setdndcallback (pico_file_drop);
	mswin_mousetrackcallback(pico_cursor);
#endif
	c = GetKey();
#ifdef	MOUSE
#ifdef  EX_MOUSE
	clear_mfunc(mouse_in_pico);
#else
	clear_mfunc(mouse_in_content);
#endif
#endif
#ifdef	_WINDOWS
	mswin_cleardndcallback ();
	mswin_mousetrackcallback(NULL);
#endif

	if(timeoutset && (c == NODATA || time_to_check())){
	    if(pico_new_mail())
	      emlwrite(_("You may possibly have new mail."), NULL);
	}

	if(km_popped)
	  switch(c){
	    case NODATA:
	    case (CTRL|'L'):
	      km_popped++;
	      break;
	    
	    default:
	      /* clear bottom three lines */
	      mlerase();
	      break;
	  }

	if(c == NODATA)
	  continue;

	if(mpresf){			/* erase message line? */
	    if(mpresf++ > MESSDELAY)
	      mlerase();
	}

	f = FALSE;
	n = 1;

#ifdef	MOUSE
	clear_mfunc(mouse_in_content);
#endif
					/* Do it.               */
	execute(normalize_cmd(c, fkm, 1), f, n);
    }
}


/*
 *  Parse the command line args.
 *
 * Args      ac
 *           av
 *      starton -- place to return starton value
 *     viewflag -- place to return viewflag value
 *
 * Result: command arguments parsed
 *       possible printing of help for command line
 *       various global flags set
 *       returns the name of any file to open, else NULL
 */
char *
pico_args(int ac, char **av, int *starton, int *viewflag, int *setlocale_collate)
{
    int   c, usage = 0;
    char *str;
    char  tmp_1k_buf[1000];     /* tmp buf to contain err msgs  */ 

Loop:
    /* while more arguments with leading - or + */
    while(--ac > 0 && (**++av == '-' || **av == '+')){
      if(**av == '+'){
	if(*++*av)
	  str = *av;
	else if(--ac)
	  str = *++av;
	else{
	  snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_arg), '+');
	  pico_display_args_err(tmp_1k_buf, NULL, 1);
	  usage++;
	  goto Loop;
	}

	if(!isdigit((unsigned char)str[0])){
	  snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_num), '+');
	  pico_display_args_err(tmp_1k_buf, NULL, 1);
	  usage++;
	}

	if(starton)
	  *starton = atoi(str);

	goto Loop;
      }
      
      /* while more chars in this argument */
      else while(*++*av){

	if(strcmp(*av, "version") == 0){
	    pico_vers_help();
	}
	else if(strcmp(*av, "no_setlocale_collate") == 0){
	    *setlocale_collate = 0;
	    goto Loop;
	}
#ifndef	_WINDOWS
	else if(strcmp(*av, "syscs") == 0){
	    use_system_translation = !use_system_translation;
	    goto Loop;
	}
#endif	/* ! _WINDOWS */
#ifdef	_WINDOWS
	else if(strcmp(*av, "cnf") == 0
	   || strcmp(*av, "cnb") == 0
	   || strcmp(*av, "crf") == 0
	   || strcmp(*av, "crb") == 0){

	    char *cmd = *av; /* save it to use below */

	    if(--ac){
		str = *++av;
		if(cmd[1] == 'n'){
		    if(cmd[2] == 'f')
		      pico_nfcolor(str);
		    else if(cmd[2] == 'b')
		      pico_nbcolor(str);
		}
		else if(cmd[1] == 'r'){
		    if(cmd[2] == 'f')
		      pico_rfcolor(str);
		    else if(cmd[2] == 'b')
		      pico_rbcolor(str);
		}
	    }
	    else{
		snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_color), cmd);
		pico_display_args_err(tmp_1k_buf, NULL, 1);
	        usage++;
	    }

	    goto Loop;
	}
#endif	/* _WINDOWS */
#ifndef	_WINDOWS
	else if(strcmp(*av, "dcs") == 0 || strcmp(*av, "kcs") == 0){
	    char *cmd = *av;

	    if(--ac){
		if(strcmp(*av, "dcs") == 0){
		    display_character_set = *++av;
		    if(!output_charset_is_supported(display_character_set)){
			snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_output_charset), display_character_set);
			pico_display_args_err(tmp_1k_buf, NULL, 1);
			usage++;
		    }
		}
		else{
		    keyboard_character_set = *++av;
		    if(!input_charset_is_supported(keyboard_character_set)){
			snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_input_charset), keyboard_character_set);
			pico_display_args_err(tmp_1k_buf, NULL, 1);
			usage++;
		    }
		}
	    }
	    else{
		snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_charset), cmd);
		pico_display_args_err(tmp_1k_buf, NULL, 1);
	        usage++;
	    }

	    goto Loop;
	}
#endif	/* ! _WINDOWS */

	/*
	 * Single char options.
	 */
	switch(c = **av){
	  /*
	   * These don't take arguments.
	   */
          case 'a':
            gmode ^= MDDOTSOK;          /* show dot files */
            break;
	  case 'b':
#ifdef notdef
    /*
     * Make MDREPLACE always on instead
     * Don't leave this to allow turning off of MDREPLACE because the
     * polarity of -b will have changed. Don't think anybody wants to
     * turn it off.
     */
	    gmode ^= MDREPLACE;  /* -b for replace string in where is command */
#endif
	    break;
	  case 'd':			/* -d for rebind delete key */
	    bindtokey(0x7f, forwdel);
	    break;
	  case 'e':			/* file name completion */
	    gmode ^= MDCMPLT;
	    break;
	  case 'f':			/* -f for function key use */
	    gmode ^= MDFKEY;
	    break;
	  case 'g':			/* show-cursor in file browser */
	    gmode ^= MDSHOCUR;
	    break;
	  case 'h':
	    usage++;
	    break;
	  case 'j':			/* allow "Goto" in file browser */
	    gmode ^= MDGOTO;
	    break;
	  case 'k':			/* kill from dot */
	    gmode ^= MDDTKILL;
	    break;
	  case 'm':			/* turn on mouse support */
	    gmode ^= MDMOUSE;
	    break;
	  case 'p':
	    preserve_start_stop = 1;
	    break;
	  case 'q':			/* -q for termcap takes precedence */
	    gmode ^= MDTCAPWINS;
	    break;
	  case 't':			/* special shutdown mode */
	    gmode ^= MDTOOL;
	    rebindfunc(wquit, quickexit);
	    break;
	  case 'v':			/* -v for View File */
	  case 'V':
	    *viewflag = !*viewflag;
	    break;			/* break back to inner-while */
	  case 'w':			/* -w turn off word wrap */
	    gmode ^= MDWRAP;
	    break;
	  case 'x':			/* suppress keyhelp */
	    sup_keyhelp = !sup_keyhelp;
	    break;
	  case 'z':			/* -z to suspend */
	    gmode ^= MDSSPD;
	    break;

	  /*
	   * These do take arguments.
	   */
	  case 'r':			/* set fill column */
	  case 'n':			/* -n for new mail notification */
	  case 's' :			/* speller */
	  case 'o' :			/* operating tree */
	  case 'Q' :                    /* Quote string */
	  case 'W' :                    /* Word separators */
	    if(*++*av)
	      str = *av;
	    else if(--ac)
	      str = *++av;
	    else{
	      if(c == 'r')
		str= "72";
	      else if(c == 'n')
		str = "180";
	      else{
		  snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_arg), c);
		  pico_display_args_err(tmp_1k_buf, NULL, 1);
		  usage++;
		  goto Loop;
	      }
	    }

	    switch(c){
	      case 's':
	        alt_speller = str;
		break;
	      case 'o':
		strncpy(opertree, str, NLINE);
		gmode ^= MDTREE;
		break;
	      case 'Q':
		glo_quote_str_orig = str;
		break;
	      case 'W':
		glo_wordseps_orig = str;
		break;

	/* numeric args */
	      case 'r':
	      case 'n':
		if(!isdigit((unsigned char)str[0])){
		  snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_num), c);
		  pico_display_args_err(tmp_1k_buf, NULL, 1);
		  usage++;
		}

		if(c == 'r'){
		    if((userfillcol = atoi(str)) < 1)
		      userfillcol = 72;
		}
		else{
		    timeoutset = 1;
		    set_input_timeout(180);
		    if(set_input_timeout(atoi(str)) < 30)
		      set_input_timeout(180);
		}
		
		break;
	    }

	    goto Loop;

	  default:			/* huh? */
	    snprintf(tmp_1k_buf, sizeof(tmp_1k_buf), _(args_pico_missing_flag), c);
	    pico_display_args_err(tmp_1k_buf, NULL, 1);
	    usage++;
	    break;
	}
      }
    }

    if(usage)
      pico_args_help();

    /* return the first filename for editing */
    if(ac > 0)
      return(*av);
    else
      return(NULL);
}


#ifdef	_WINDOWS
/*
 *
 */
int
pico_file_drop(int x, int y, char *filename)
{
    /*
     * if current buffer is unchanged
     * *or* "new buffer" and no current text
     */
    if(((curwp->w_bufp->b_flag & BFCHG) == 0)
       || (curwp->w_bufp->b_fname[0] == '\0'
	   && curwp->w_bufp->b_linep == lforw(curwp->w_bufp->b_linep)
	   && curwp->w_doto == 0)){
	register BUFFER *bp = curwp->w_bufp;
	char     bname[NBUFN];

	makename(bname, filename);
	strncpy(bp->b_bname, bname, sizeof(bp->b_bname));
	bp->b_bname[sizeof(bp->b_bname)-1] = '\0';
	strncpy(bp->b_fname, filename, sizeof(bp->b_fname));
	bp->b_fname[sizeof(bp->b_fname)-1] = '\0';
	bp->b_flag &= ~BFCHG;	/* turn off change bit */
	if (readin(filename, 1, 1) == ABORT) {
	    strncpy(bp->b_bname, "", sizeof(bp->b_bname));
	    bp->b_bname[sizeof(bp->b_bname)-1] = '\0';
	    strncpy(bp->b_fname, "", sizeof(bp->b_fname));
	    bp->b_fname[sizeof(bp->b_fname)-1] = '\0';
	}

	bp->b_dotp = bp->b_linep;
	bp->b_doto = 0;
    }
    else{
	EML eml;

	ifile(filename);
	curwp->w_flag |= WFHARD;
	update();
	eml.s = filename;
	emlwrite("Inserted dropped file \"%s\"", &eml);
    }

    curwp->w_flag |= WFHARD;
    update();			/* restore cursor */
    return(1);
}
#endif


/*----------------------------------------------------------------------
    print a few lines of help for command line arguments

  Args:  none

 Result: prints help messages
  ----------------------------------------------------------------------*/
void
pico_args_help(void)
{
    char **a;
    char *pp[2];

    pp[1] = NULL;

    /**  print out possible starting arguments... **/

    for(a=args_pico_args; a && *a; a++){
	pp[0] = _(*a);
	pico_display_args_err(NULL, pp, 0);
    }

    exit(1);
}


void
pico_vers_help(void)
{
    char v0[100];
    char *v[2];

    snprintf(v0, sizeof(v0), "Pico %.50s", version);
    v[0] = v0;
    v[1] = NULL;

    pico_display_args_err(NULL, v, 0);
    exit(1);
}


/*----------------------------------------------------------------------
   write argument error to the display...

  Args:  none

 Result: prints help messages
  ----------------------------------------------------------------------*/
void
pico_display_args_err(char *s, char **a, int err)
{
    char  errstr[256], *errp;
    FILE *fp = err ? stderr : stdout;
#ifdef _WINDOWS
    char         tmp_20k_buf[SIZEOF_20KBUF];
#endif


    if(err && s)
      snprintf(errp = errstr, sizeof(errstr), _("Argument Error: %.200s"), s);
    else
      errp = s;

#ifdef  _WINDOWS
    if(errp)
      mswin_messagebox(errp, err);

    if(a && *a){
        strncpy(tmp_20k_buf, *a++, SIZEOF_20KBUF);
	tmp_20k_buf[SIZEOF_20KBUF-1] = '\0';
        while(a && *a){
            strncat(tmp_20k_buf, "\n", SIZEOF_20KBUF-strlen(tmp_20k_buf)-1);
	    tmp_20k_buf[SIZEOF_20KBUF-1] = '\0';
            strncat(tmp_20k_buf, *a++, SIZEOF_20KBUF-strlen(tmp_20k_buf)-1);
	    tmp_20k_buf[SIZEOF_20KBUF-1] = '\0';
        }

        mswin_messagebox(tmp_20k_buf, err);
    }
#else
    if(errp)
      fprintf(fp, "%s\n", errp);

    while(a && *a)
      fprintf(fp, "%s\n", *a++);
#endif
}