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BSD 4_3 development
[unix-history] / usr / contrib / rn / common.h
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9c4b96b4
C		 1/* $Header: common.h,v 4.3.1.3 85/05/23 17:19:32 lwall Exp $
2 *
3 * $Log: common.h,v $
4 * Revision 4.3.1.3 85/05/23 17:19:32 lwall
5 * Now allows 'r' and 'f' on null articles.
6 *
7 * Revision 4.3.1.2 85/05/13 09:30:39 lwall
8 * Added CUSTOMLINES option.
9 *
10 * Revision 4.3.1.1 85/05/10 11:32:04 lwall
11 * Branch for patches.
12 *
13 * Revision 4.3 85/05/01 11:37:11 lwall
14 * Baseline for release with 4.3bsd.
15 *
16 */
17
18#include "config.h" /* generated by installation script */
19#ifdef WHOAMI
20# include <whoami.h>
21#endif
22
23#include <stdio.h>
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <ctype.h>
27
28#ifndef isalnum
29# define isalnum(c) (isalpha(c) || isdigit(c))
30#endif
31
32#include <errno.h>
33#include <signal.h>
34#ifdef IOCTL
35#include <sys/ioctl.h>
36#endif IOCTL
37
38#ifdef FCNTL
39# include <fcntl.h>
40#endif
41
42#ifdef TERMIO
43# include <termio.h>
44#else
45# include <sgtty.h>
46#endif
47
48#ifdef GETPWENT
49# include <pwd.h>
50#endif
51
52#define BITSPERBYTE 8
53#define LBUFLEN 512 /* line buffer length */
54 /* (don't worry, .newsrc lines can exceed this) */
55#ifdef pdp11
56# define CBUFLEN 256 /* command buffer length */
57# define PUSHSIZE 128
58#else
59# define CBUFLEN 512 /* command buffer length */
60# define PUSHSIZE 256
61#endif
62#ifdef pdp11
63# define MAXFILENAME 128
64#else
65# define MAXFILENAME 512
66#endif
67#define LONGKEY 15 /* longest keyword: currently "posting-version" */
68#define FINISHCMD 0177
69
70/* some handy defs */
71
72#define bool char
73#define TRUE (1)
74#define FALSE (0)
75#define Null(t) ((t)0)
76#define Nullch Null(char *)
77#define Nullfp Null(FILE *)
78
79#define Ctl(ch) (ch & 037)
80
81#define strNE(s1,s2) (strcmp(s1,s2))
82#define strEQ(s1,s2) (!strcmp(s1,s2))
83#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
84#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
85
86/* Things we can figure out ourselves */
87
88#ifdef SIGTSTP
89# define BERKELEY /* include job control signals? */
90#endif
91
92#ifdef SIGPROF
93# define BSD42 /* do we have Berkeley 4.2? */
94#endif
95
96#ifdef FIONREAD
97# define PENDING
98#else
99# ifdef O_NDELAY
100# define PENDING
101# endif
102#endif
103
104#ifdef EUNICE
105# define LINKART /* add 1 level of possible indirection */
106# define UNLINK(victim) while (!unlink(victim))
107#else
108# define UNLINK(victim) unlink(victim)
109#endif
110
111/* Valid substitutions for strings marked with % comment are:
112 * %a Current article number
113 * %A Full name of current article (%P/%c/%a)
114 * (if LINKART defined, is the name of the real article)
115 * %b Destination of a save command, a mailbox or command
116 * %B The byte offset to the beginning of the article for saves
117 * with or without the header
118 * %c Current newsgroup, directory form
119 * %C Current newsgroup, dot form
120 * %d %P/%c
121 * %D Old Distribution: line
122 * %f Old From: line or Reply-To: line
123 * %F Newsgroups to followup to from Newsgroups: and Followup-To:
124 * %h Name of header file to pass to mail or news poster
125 * %H Host name (yours)
126 * %i Old Message-I.D.: line, with <>
127 * %I Inclusion indicator
128 * %l News administrator login name
129 * %L Login name (yours)
130 * %M Number of articles markd with M
131 * %n Newsgroups from source article
132 * %N Full name (yours)
133 * %o Organization (yours)
134 * %O Original working directory (where you ran rn from)
135 * %p Your private news directory (-d switch)
136 * %P Public news spool directory (SPOOLDIR)
137 * %r Last reference (parent article id)
138 * %R New references list
139 * %s Subject, with all Re's and (nf)'s stripped off
140 * %S Subject, with one Re stripped off
141 * %t New To: line derived from From: and Reply-To (Internet always)
142 * %T New To: line derived from Path:
143 * %u Number of unread articles
144 * %U Number of unread articles disregarding current article
145 * %x News library directory, usually /usr/lib/news
146 * %X Rn library directory, usually %x/rn
147 * %z Size of current article in bytes.
148 * %~ Home directory
149 * %. Directory containing . files
150 * %$ current process number
151 * %{name} Environment variable "name". %{name-default} form allowed.
152 * %[name] Header line beginning with "Name: ", without "Name: "
153 * %"prompt"
154 * Print prompt and insert what is typed.
155 * %`command`
156 * Insert output of command.
157 * %(test_text=pattern?if_text:else_text)
158 * Substitute if_text if test_text matches pattern, otherwise
159 * substitute else_text. Use != for negated match.
160 * % substitutions are done on test_text, if_text, and else_text.
161 * (Note: %() only works if CONDSUB defined.)
162 * %digit Substitute the text matched by the nth bracket in the last
163 * pattern that had brackets. %0 matches the last bracket
164 * matched, in case you had alternatives.
165 *
166 * Put ^ in the middle to capitalize the first letter: %^C = Net.jokes
167 * Put _ in the middle to capitalize last component: %_c = net/Jokes
168 *
169 * ~ interpretation in filename expansion happens after % expansion, so
170 * you could put ~%{NEWSLOGNAME-news} and it will expand correctly.
171 */
172
173/* *** System Dependent Stuff *** */
174
175/* NOTE: many of these are defined in the config.h file */
176
177/* name of organization */
178#ifndef ORGNAME
179# define ORGNAME "ACME Widget Company, Widget Falls, Southern North Dakota"
180#endif
181
182#ifndef MBOXCHAR
183# define MBOXCHAR 'F' /* how to recognize a mailbox by 1st char */
184#endif
185
186#ifndef ROOTID
187# define ROOTID 0 /* uid of superuser */
188#endif
189
190#ifdef NORMSIG
191# define sigset signal
192# define sigignore(sig) signal(sig,SIG_IGN)
193#endif
194
195#ifndef LOGDIRFIELD
196# define LOGDIRFIELD 6 /* Which field (origin 1) is the */
197 /* login directory in /etc/passwd? */
198 /* (If it is not kept in passwd, */
199 /* but getpwnam() returns it, */
200 /* define the symbol GETPWENT) */
201#endif
202#ifndef GCOSFIELD
203# define GCOSFIELD 5
204#endif
205
206#ifndef NEGCHAR
207# define NEGCHAR '!'
208#endif
209
210/* Space conservation section */
211
212/* To save D space, cut down size of MAXRCLINE, NGMAX, VARYSIZE. */
213#define MAXRCLINE 500 /* number of lines allowed in .newsrc */
214 /* several parallel arrays affected. */
215 /* (You can have more lines in the active file, */
216 /* just not in the .newsrc) */
217#define HASHSIZ 547 /* should be prime, and at least MAXRCLINE + 10% */
218#define NGMAX 100 /* number of newsgroups allowed on command line */
219 /* undefine ONLY symbol to disable "only" feature */
220#define VARYSIZE 256 /* this makes a block 1024 bytes long in DECville */
221 /* (used by virtual array routines) */
222
223/* Undefine any of the following features to save both I and D space */
224/* In general, earlier ones are easier to get along without */
225/* Pdp11's without split I and D may have to undefine them all */
226#define DEBUGGING /* include debugging code */
227#define CUSTOMLINES /* include code for HIDELINE and PAGESTOP */
228#define PUSHBACK /* macros and keymaps using pushback buffer */
229#define SPEEDOVERMEM /* use more memory to run faster */
230#define WORDERASE /* enable ^W to erase a word */
231#define MAILCALL /* check periodically for mail */
232#define CLEAREOL /* use clear to end-of-line instead of clear screen */
233#define NOFIREWORKS /* keep whole screen from flashing on certain */
234 /* terminals such as older Televideos */
235#define VERIFY /* echo the command they just typed */
236#define HASHNG /* hash newsgroup lines for fast lookup-- */
237 /* linear search used if not defined */
238#define CONDSUB /* allow %(cond?text:text) */
239#define BACKTICK /* allow %`command` */
240#define PROMPTTTY /* allow %"prompt" */
241#define ULSMARTS /* catch _^H in text and do underlining */
242#define TERMMOD /* allow terminal type modifier on switches */
243#define BAUDMOD /* allow baudrate modifier on switches */
244#define GETLOGIN /* use getlogin() routine as backup to environment */
245 /* variables USER or LOGNAME */
246#define ORGFILE /* if organization begins with /, look up in file */
247#define TILDENAME /* allow ~logname expansion */
248#define SETENV /* allow command line environment variable setting */
249#define GETWD /* use our getwd() instead of piped in pwd */
250#ifndef BSD42 /* 4.2 sites should just use groups for this */
251#define SETUIDGID /* substitute eaccess() for access() so that rn */
252 /* can run setuid or setgid */
253 /* if not setuid or setgid, you don't need it */
254#endif
255#define MAKEDIR /* use our makedir() instead of shell script */
256#define MEMHELP /* keep help messages in memory */
257#define VERBOSE /* compile in more informative messages */
258#define TERSE /* compile in shorter messages */
259 /* (Note: both VERBOSE and TERSE can be defined; -t
260 * sets terse mode. One or the other MUST be defined.
261 */
262#ifndef pdp11
263# define CACHESUBJ /* cache subject lines in memory */
264 /* without this ^N still works but runs really slow */
265 /* but you save lots and lots of D space */
266# define CACHEFIRST /* keep absolute first article numbers in memory */
267 /* cost: about 2k */
268#endif
269#define ROTATION /* enable x, X and ^X commands to work */
270#define DELBOGUS /* ask if bogus newsgroups should be deleted */
271#define RELOCATE /* allow newsgroup rearranging */
272#define ESCSUBS /* escape substitutions in multi-character commands */
273#define DELAYMARK /* allow articles to be temporarily marked as read */
274 /* until exit from current newsgroup or Y command */
275#define MCHASE /* unmark xrefed articles on m or M */
276#define MUNGHEADER /* allow alternate header formatting via */
277 /* environment variable ALTHEADER (not impl) */
278#define ASYNC_PARSE /* allow parsing headers asyncronously to reading */
279 /* used by MCHASE and MUNGHEADER */
280#define FINDNEWNG /* check for new newsgroups on startup */
281#define FASTNEW /* do optimizations on FINDNEWNG for faster startup */
282 /* (this optimization can make occasional mistakes */
283 /* if a group is removed and another group of the */
284 /* same length is added, and if no softpointers are */
285 /* affected by said change.) */
286#define INNERSEARCH /* search command 'g' with article */
287#define CATCHUP /* catchup command at newsgroup level */
288#define NGSEARCH /* newsgroup pattern matching */
289#define ONLY /* newsgroup restrictions by pattern */
290#define KILLFILES /* automatic article killer files */
291#define ARTSEARCH /* pattern searches among articles */
292 /* /, ?, ^N, ^P, k, K */
293
294/* some dependencies among options */
295
296#ifndef ARTSEARCH
297# undef KILLFILES
298# undef INNERSEARCH
299# undef CACHESUBJ
300#endif
301
302#ifndef DELAYMARK
303# ifndef MCHASE
304# ifndef MUNGHEADER
305# undef ASYNC_PARSE
306# endif
307# endif
308#endif
309
310#ifndef SETUIDGID
311# define eaccess access
312#endif
313
314#ifdef ONLY /* idiot lint doesn't grok #if */
315# define NGSORONLY
316#else
317# ifdef NGSEARCH
318# define NGSORONLY
319# endif
320#endif
321
322#ifdef VERBOSE
323# ifdef TERSE
324# define IF(c) if (c)
325# define ELSE else
326# else !TERSE
327# define IF(c)
328# define ELSE
329# endif
330#else !VERBOSE
331# ifndef TERSE
332# define TERSE
333# endif
334# define IF(c) "IF" outside of VERBOSE???
335# define ELSE "ELSE" outside of VERBOSE???
336#endif
337
338#ifdef DEBUGGING
339# define assert(ex) {if (!(ex)){fprintf(stderr,"Assertion failed: file %s, line %d\n", __FILE__, __LINE__);sig_catcher(0);}}
340#else
341# define assert(ex) ;
342#endif
343
344#ifdef SPEEDOVERMEM
345# define OFFSET(x) (x)
346#else
347# define OFFSET(x) ((x)-absfirst)
348#endif
349
350/* If you're strapped for space use the help messages in shell scripts */
351/* if {NG,ART,PAGER,SUBS}HELP is undefined, help messages are in memory */
352#ifdef MEMHELP /* undef MEMHELP above to get them all as sh scripts */
353# undef NGHELP
354# undef ARTHELP
355# undef PAGERHELP
356# undef SUBSHELP
357#else
358# ifndef NGHELP /* % and ~ */
359# define NGHELP "%X/ng.help"
360# endif
361# ifndef ARTHELP /* % and ~ */
362# define ARTHELP "%X/art.help"
363# endif
364# ifndef PAGERHELP /* % and ~ */
365# define PAGERHELP "%X/pager.help"
366# endif
367# ifndef SUBSHELP /* % and ~ */
368# define SUBSHELP "%X/subs.help"
369# endif
370#endif
371
372#ifdef CLEAREOL
373# define TCSIZE 512 /* capacity for termcap strings */
374#else
375# ifdef pdp11
376# define TCSIZE 256 /* capacity for termcap strings */
377# else
378# define TCSIZE 512 /* capacity for termcap srings */
379# endif
380#endif
381
382/* Additional ideas:
383 * Make the do_newsgroup() routine a separate process.
384 * Keep .newsrc on disk instead of in memory.
385 * Overlays, if you have them.
386 * Get a bigger machine.
387 */
388
389/* End of Space Conservation Section */
390
391/* More System Dependencies */
392
393/* news library */
394#ifndef LIB /* ~ and %l only ("~%l" is permissable) */
395# define LIB "/usr/lib/news"
396#endif
397
398/* path to private executables */
399#ifndef RNLIB /* ~, %x and %l only */
400# define RNLIB "%x/rn"
401#endif
402
403/* system-wide RNINIT switches */
404#ifndef GLOBINIT
405# define GLOBINIT "%X/INIT"
406#endif
407
408/* where to find news files */
409#ifndef SPOOL /* % and ~ */
410# define SPOOL "/usr/spool/news"
411#endif
412
413/* file containing list of active newsgroups and max article numbers */
414#ifndef ACTIVE /* % and ~ */
415# define ACTIVE "%x/active"
416#endif
417
418/* location of history file */
419#ifndef ARTFILE /* % and ~ */
420# define ARTFILE "%x/history"
421#endif
422
423/* command to setup a new .newsrc */
424#ifndef NEWSETUP /* % and ~ */
425# define NEWSETUP "newsetup"
426#endif
427
428/* command to display a list of un-subscribed-to newsgroups */
429#ifndef NEWSGROUPS /* % and ~ */
430# define NEWSGROUPS "newsgroups"
431#endif
432
433/* preferred shell for use in doshell routine */
434/* ksh or sh would be okay here */
435#ifndef PREFSHELL
436# define PREFSHELL "/bin/csh"
437#endif
438
439/* path to fastest starting shell */
440#ifndef SH
441# define SH "/bin/sh"
442#endif
443
444/* path to default editor */
445#ifndef DEFEDITOR
446# define DEFEDITOR "/usr/ucb/vi"
447#endif
448
449/* location of macro file */
450#ifndef RNMACRO
451# ifdef PUSHBACK
452# define RNMACRO "%./.rnmac"
453# endif
454#endif
455
456/* location of full name */
457#ifndef FULLNAMEFILE
458# ifndef PASSNAMES
459# define FULLNAMEFILE "%./.fullname"
460# endif
461#endif
462
463/* virtual array file name template */
464#ifndef VARYNAME /* % and ~ */
465# define VARYNAME "/tmp/rnvary.%$"
466#endif
467
468/* file to pass header to followup article poster */
469#ifndef HEADNAME /* % and ~ */
470# define HEADNAME "%./.rnhead"
471/* or alternately #define HEADNAME "/tmp/rnhead.%$" */
472#endif
473
474#ifndef MAKEDIR
475/* shell script to make n-deep subdirectories */
476# ifndef DIRMAKER /* % and ~ */
477# define DIRMAKER "%X/makedir"
478# endif
479#endif
480
481/* location of newsrc file */
482#ifndef RCNAME /* % and ~ */
483# define RCNAME "%./.newsrc"
484#endif
485
486/* temporary newsrc file in case we crash while writing out */
487#ifndef RCTNAME /* % and ~ */
488# define RCTNAME "%./.newnewsrc"
489#endif
490
491/* newsrc file at the beginning of this session */
492#ifndef RCBNAME /* % and ~ */
493# define RCBNAME "%./.oldnewsrc"
494#endif
495
496/* if existent, contains process number of current or crashed rn */
497#ifndef LOCKNAME /* % and ~ */
498# define LOCKNAME "%./.rnlock"
499#endif
500
501/* information from last invocation of rn */
502#ifndef LASTNAME /* % and ~ */
503# define LASTNAME "%./.rnlast"
504#endif
505
506/* file with soft pointers into the active file */
507#ifndef SOFTNAME /* % and ~ */
508# define SOFTNAME "%./.rnsoft"
509#endif
510
511/* list of article numbers to mark as unread later (see M and Y cmmands) */
512#ifndef RNDELNAME /* % and ~ */
513# define RNDELNAME "%./.rndelay"
514#endif
515
516/* a motd-like file for rn */
517#ifndef NEWSNEWSNAME /* % and ~ */
518# define NEWSNEWSNAME "%X/newsnews"
519#endif
520
521/* command to send a reply */
522#ifndef MAILPOSTER /* % and ~ */
523# define MAILPOSTER "Rnmail -h %h"
524#endif
525
526#ifdef INTERNET
527# ifndef MAILHEADER /* % */
528# ifdef CONDSUB
529# define MAILHEADER "To: %t\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\n%(%[references]!=^$?References\\: %[references]\n)Organization: %o\nCc: \nBcc: \n\n"
530# else
531# define MAILHEADER "To: %t\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\nReferences: %[references]\nCc: \nBcc: \n\n"
532# endif
533# endif
534#else
535# ifndef MAILHEADER /* % */
536# ifdef CONDSUB
537# define MAILHEADER "To: %T\nSubject: %(%i=^$?:Re: %S\nNewsgroups: %n\nIn-Reply-To: %i)\n%(%[references]!=^$?References\\: %[references]\n)Organization: %o\nCc: \nBcc: \n\n"
538# else
539# define MAILHEADER "To: %T\nSubject: Re: %S\nNewsgroups: %n\nIn-Reply-To: %i\nReferences: %[references]\nCc: \nBcc: \n\n"
540# endif
541# endif
542#endif
543
544#ifndef YOUSAID /* % */
545# define YOUSAID "In article %i you write:"
546#endif
547
548/* command to submit a followup article */
549#ifndef NEWSPOSTER /* % and ~ */
550# define NEWSPOSTER "Pnews -h %h"
551#endif
552
553#ifndef NEWSHEADER /* % */
554# ifdef CONDSUB
555# define NEWSHEADER "Newsgroups: %(%F=^$?%C:%F)\nSubject: %(%S=^$?%\"\n\nSubject: \":Re: %S)\nSummary: \nExpires: \n%(%R=^$?:References: %R\n)Sender: \nReply-To: %L@%H.UUCP (%N)\nFollowup-To: \nDistribution: %(%i=^$?%\"Distribution: \":%D)\nOrganization: %o\nKeywords: %[keywords]\n\n"
556# else
557# define NEWSHEADER "Newsgroups: %F\nSubject: Re: %S\nSummary: \nExpires: \nReferences: %R\nSender: \nReply-To: %L@%H.UUCP (%N)\nFollowup-To: \nDistribution: %D\nOrganization: %o\nKeywords: %[keywords]\n\n"
558# endif
559#endif
560
561#ifndef ATTRIBUTION /* % */
562# define ATTRIBUTION "In article %i %f writes:"
563#endif
564
565#ifndef PIPESAVER /* % */
566# ifdef CONDSUB
567# define PIPESAVER "%(%B=^0$?<%A:tail +%Bc %A |) %b"
568# else
569# define PIPESAVER "tail +%Bc %A | %b"
570# endif
571#endif
572
573#ifndef NORMSAVER /* % and ~ */
574# define NORMSAVER "%X/norm.saver %A %P %c %a %B %C \"%b\""
575#endif
576
577#ifndef MBOXSAVER /* % and ~ */
578# ifdef MININACT /* 2.10.2 site? */
579# define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %`date`\""
580# else
581# ifdef CONDSUB
582# define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %(%[date]=^\\(\\w*\\), \\(\\w*\\)-\\(\\w*\\)-\\(\\w*\\) \\([^ ]*\\)?%1 %3 %(%2=..?%2: %2) %5 19%4)\""
583 /* header munging with a vengeance */
584# else
585# define MBOXSAVER "%X/mbox.saver %A %P %c %a %B %C \"%b\" \"From %T %[posted]\""
586# endif
587# endif
588#endif
589
590#ifdef MKDIRS
591
592# ifndef SAVEDIR /* % and ~ */
593# define SAVEDIR "%p/%c"
594# endif
595# ifndef SAVENAME /* % */
596# define SAVENAME "%a"
597# endif
598
599#else
600
601# ifndef SAVEDIR /* % and ~ */
602# define SAVEDIR "%p"
603# endif
604# ifndef SAVENAME /* % */
605# define SAVENAME "%^C"
606# endif
607
608#endif
609
610#ifndef KILLGLOBAL /* % and ~ */
611# define KILLGLOBAL "%p/KILL"
612#endif
613
614#ifndef KILLLOCAL /* % and ~ */
615# define KILLLOCAL "%p/%c/KILL"
616#endif
617
618/* how to cancel an article */
619#ifndef CANCEL
620# ifdef MININACT /* 2.10.2 ? */
621# define CANCEL "%x/inews -h < %h"
622# else
623# define CANCEL "inews -h < %h"
624# endif
625#endif
626
627/* how to cancel an article, continued */
628#ifndef CANCELHEADER
629# define CANCELHEADER "Newsgroups: %n\nSubject: cmsg cancel %i\nReferences: %R\nReply-To: %L@%H.UUCP (%N)\nDistribution: %D\nOrganization: %o\n"
630#endif
631
632/* where to find the mail file */
633#ifndef MAILFILE
634# define MAILFILE "/usr/spool/mail/%L"
635#endif
636
637/* some important types */
638
639typedef int NG_NUM; /* newsgroup number */
640typedef long ART_NUM; /* article number */
641#ifdef pdp11
642 typedef short ART_UNREAD; /* ordinarily this should be long */
643 /* like ART_NUM, but assuming that */
644 /* we stay less than 32767 articles */
645 /* behind saves a lot of space. */
646 /* NOTE: do not make unsigned. */
647#else
648 typedef long ART_UNREAD;
649#endif
650typedef long ART_POS; /* char position in article file */
651typedef int ART_LINE; /* line position in article file */
652typedef short ACT_POS; /* char position in active file */
653typedef unsigned int MEM_SIZE; /* for passing to malloc */
654
655/* *** end of the machine dependent stuff *** */
656
657/* GLOBAL THINGS */
658
659/* file statistics area */
660
661EXT struct stat filestat;
662
663/* various things of type char */
664
665char *index();
666char *rindex();
667char *getenv();
668char *strcat();
669char *strcpy();
670char *sprintf();
671
672EXT char buf[LBUFLEN+1]; /* general purpose line buffer */
673EXT char cmd_buf[CBUFLEN]; /* buffer for formatting system commands */
674
675EXT char *indstr INIT(">"); /* indent for old article embedded in followup */
676
677EXT char *cwd INIT(Nullch); /* current working directory */
678EXT char *dfltcmd INIT(Nullch); /* 1st char is default command */
679
680/* switches */
681
682#ifdef DEBUGGING
683 EXT int debug INIT(0); /* -D */
684# define DEB_INNERSRCH 32
685# define DEB_FILEXP 64
686# define DEB_HASH 128
687# define DEB_XREF_MARKER 256
688# define DEB_CTLAREA_BITMAP 512
689# define DEB_SOFT_POINTERS 1024
690# define DEB_NEWSRC_LINE 2048
691# define DEB_SEARCH_AHEAD 4096
692# define DEB_CHECKPOINTING 8192
693# define DEB_FEED_XREF 16384
694#endif
695
696#ifdef ARTSEARCH
697 EXT int scanon INIT(0); /* -S */
698#endif
699
700EXT bool mbox_always INIT(FALSE); /* -M */
701EXT bool norm_always INIT(FALSE); /* -N */
702EXT bool checkflag INIT(FALSE); /* -c */
703EXT bool suppress_cn INIT(FALSE); /* -s */
704EXT int countdown INIT(5); /* how many lines to list before invoking -s */
705EXT bool muck_up_clear INIT(FALSE); /* -loco */
706EXT bool erase_screen INIT(FALSE); /* -e */
707#ifdef CLEAREOL
708EXT bool can_home_clear INIT(FALSE); /* fancy -e -- PWP */
709#endif CLEAREOL
710EXT bool findlast INIT(FALSE); /* -r */
711EXT bool typeahead INIT(FALSE); /* -T */
712#ifdef VERBOSE
713# ifdef TERSE
714 EXT bool verbose INIT(TRUE); /* +t */
715# endif
716#endif
717#ifdef VERIFY
718 EXT bool verify INIT(FALSE); /* -v */
719#endif
720
721#define NOMARKING 0
722#define STANDOUT 1
723#define UNDERLINE 2
724EXT int marking INIT(NOMARKING); /* -m */
725
726EXT ART_LINE initlines INIT(0); /* -i */
727
728/* miscellania */
729
730long atol(), fseek(), ftell();
731EXT bool in_ng INIT(FALSE); /* current state of rn */
732EXT char mode INIT('i'); /* current state of rn */
733
734EXT FILE *tmpfp INIT(Nullfp); /* scratch fp used for .rnlock, .rnlast, etc. */
735
736EXT NG_NUM nextrcline INIT(0); /* 1st unused slot in rcline array */
737 /* startup to avoid checking twice in a row */
738
739extern errno;
740
741/* Factored strings */
742
743EXT char nullstr[] INIT("");
744EXT char sh[] INIT(SH);
745EXT char defeditor[] INIT(DEFEDITOR);
746EXT char hforhelp[] INIT("Type h for help.\n");
747#ifdef STRICTCR
748EXT char badcr[] INIT("\nUnnecessary CR ignored.\n");
749#endif
750EXT char readerr[] INIT("rn read error");
751EXT char unsubto[] INIT("\n\nUnsubscribed to newsgroup %s\n");
752EXT char cantopen[] INIT("Can't open %s\n");
753EXT char cantcreate[] INIT("Can't create %s\n");
754
755#ifdef VERBOSE
756 EXT char nocd[] INIT("Can't chdir to directory %s\n");
757#else
758 EXT char nocd[] INIT("Can't find %s\n");
759#endif
760
761#ifdef NOLINEBUF
762#define FLUSH ,fflush(stdout)
763#else
764#define FLUSH
765#endif
766
767#ifdef lint
768#undef FLUSH
769#define FLUSH
770#undef putchar
771#define putchar(c)
772#endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.