src/extern.h

   1 /* Copyright (c) 2008
   2  *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
   3  *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
   4  *      Micah Cowan (micah@cowan.name)
   5  *      Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
   6  * Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
   7  *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
   8  *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
   9  * Copyright (c) 1987 Oliver Laumann
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 3, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program (see the file COPYING); if not, see
  23  * http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
  24  * 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  25  *
  26  ****************************************************************
  27  * $Id$ FAU
  28  */
  29
  30 #if !defined(__GNUC__) || __GNUC__ < 2
  31 #undef __attribute__
  32 #define __attribute__(x)
  33 #endif
  34
  35 /* screen.c */
  36 extern int   main __P((int, char **));
  37 extern sigret_t SigHup __P(SIGPROTOARG);
  38 extern void  eexit __P((int));
  39 extern void  Detach __P((int));
  40 extern void  Hangup __P((void));
  41 extern void  Kill __P((int, int));
  42 #ifdef USEVARARGS
  43 extern void  Msg __P((int, char *, ...)) __attribute__((format(printf, 2, 3)));
  44 extern void  Panic __P((int, char *, ...)) __attribute__((format(printf, 2, 3)));
  45 #else
  46 extern void  Msg __P(());
  47 extern void  Panic __P(());
  48 #endif
  49 extern void  Finit __P((int));
  50 extern void  MakeNewEnv __P((void));
  51 extern char *MakeWinMsg __P((char *, struct win *, int));
  52 extern char *MakeWinMsgEv __P((char *, struct win *, int, int, struct event *, int));
  53 extern void  PutWinMsg __P((char *, int, int));
  54 extern void  WindowDied __P((struct win *, int, int));
  55 extern void  setbacktick __P((int, int, int, char **));
  56
  57 /* ansi.c */
  58 extern void  ResetAnsiState __P((struct win *));
  59 extern void  ResetWindow __P((struct win *));
  60 extern void  ResetCharsets __P((struct win *));
  61 extern void  WriteString __P((struct win *, char *, int));
  62 extern void  ChangeAKA __P((struct win *, char *, int));
  63 extern void  SetCharsets __P((struct win *, char *));
  64 extern int   GetAnsiStatus __P((struct win *, char *));
  65 extern void  WNewAutoFlow __P((struct win *, int));
  66 extern void  WBell __P((struct win *, int));
  67 extern void  WMsg __P((struct win *, int, char *));
  68 extern void  WChangeSize __P((struct win *, int, int));
  69 extern void  WindowChanged __P((struct win *, int));
  70 extern int   MFindUsedLine __P((struct win *, int, int));
  71
  72 /* fileio.c */
  73 extern int   StartRc __P((char *, int));
  74 extern void  FinishRc __P((char *));
  75 extern void  RcLine __P((char *, int));
  76 extern FILE *secfopen __P((char *, char *));
  77 extern int   secopen __P((char *, int, int));
  78 extern void  WriteFile __P((struct acluser *, char *, int));
  79 extern char *ReadFile __P((char *, int *));
  80 extern void  KillBuffers __P((void));
  81 extern int   printpipe __P((struct win *, char *));
  82 extern int   readpipe __P((char **));
  83 extern void  RunBlanker __P((char **));
  84 extern void  do_source __P((char *));
  85
  86 /* tty.c */
  87 extern int   OpenTTY __P((char *, char *));
  88 extern void  InitTTY __P((struct mode *, int));
  89 extern void  GetTTY __P((int, struct mode *));
  90 extern void  SetTTY __P((int, struct mode *));
  91 extern void  SetMode __P((struct mode *, struct mode *, int, int));
  92 extern void  SetFlow __P((int));
  93 extern void  SendBreak __P((struct win *, int, int));
  94 extern int   TtyGrabConsole __P((int, int, char *));
  95 extern char *TtyGetModemStatus __P((int, char *));
  96 #ifdef DEBUG
  97 extern void  DebugTTY __P((struct mode *));
  98 #endif /* DEBUG */
  99 extern int   fgtty __P((int));
 100 extern void  brktty __P((int));
 101 extern struct baud_values *lookup_baud __P((int bps));
 102 extern int   SetBaud __P((struct mode *, int, int));
 103 extern int   SttyMode __P((struct mode *, char *));
 104
 105
 106 /* mark.c */
 107 extern int   GetHistory __P((void));
 108 extern void  MarkRoutine __P((void));
 109 extern void  revto_line __P((int, int, int));
 110 extern void  revto __P((int, int));
 111 extern int   InMark __P((void));
 112 extern void  MakePaster __P((struct paster *, char *, int, int));
 113 extern void  FreePaster __P((struct paster *));
 114
 115 /* search.c */
 116 extern void  Search __P((int));
 117 extern void  ISearch __P((int));
 118
 119 /* input.c */
 120 extern void  inp_setprompt __P((char *, char *));
 121 extern void  Input __P((char *, int, int, void (*)(char *, int, char *), char *, int));
 122 extern int   InInput __P((void));
 123
 124 /* help.c */
 125 extern void  exit_with_usage __P((char *, char *, char *));
 126 extern void  display_help __P((char *, struct action *));
 127 extern void  display_copyright __P((void));
 128 extern void  display_displays __P((void));
 129 extern void  display_bindkey __P((char *, struct action *));
 130 extern void  display_wlist __P((int, int, struct win *));
 131 extern int   InWList __P((void));
 132 extern void  WListUpdatecv __P((struct canvas *, struct win *));
 133 extern void  WListLinkChanged __P((void));
 134 #ifdef ZMODEM
 135 extern void  ZmodemPage __P((void));
 136 #endif
 137
 138 /* window.c */
 139 extern int   MakeWindow __P((struct NewWindow *));
 140 extern int   RemakeWindow __P((struct win *));
 141 extern void  FreeWindow __P((struct win *));
 142 #ifdef PSEUDOS
 143 extern int   winexec __P((char **));
 144 extern void  FreePseudowin __P((struct win *));
 145 #endif
 146 extern void  nwin_compose __P((struct NewWindow *, struct NewWindow *, struct NewWindow *));
 147 extern int   DoStartLog __P((struct win *, char *, int));
 148 extern int   ReleaseAutoWritelock __P((struct display *, struct win *));
 149 extern int   ObtainAutoWritelock __P((struct display *, struct win *));
 150 extern void  CloseDevice __P((struct win *));
 151 #ifdef ZMODEM
 152 extern void  zmodem_abort __P((struct win *, struct display *));
 153 #endif
 154 extern void  execvpe __P((char *, char **, char **));
 155
 156 /* utmp.c */
 157 #ifdef UTMPOK
 158 extern void  InitUtmp __P((void));
 159 extern void  RemoveLoginSlot __P((void));
 160 extern void  RestoreLoginSlot __P((void));
 161 extern int   SetUtmp __P((struct win *));
 162 extern int   RemoveUtmp __P((struct win *));
 163 #endif /* UTMPOK */
 164 extern void  SlotToggle __P((int));
 165 #ifdef USRLIMIT
 166 extern int   CountUsers __P((void));
 167 #endif
 168 #ifdef CAREFULUTMP
 169 extern void   CarefulUtmp __P((void));
 170 #else
 171 # define CarefulUtmp()  /* nothing */
 172 #endif /* CAREFULUTMP */
 173
 174
 175 /* loadav.c */
 176 #ifdef LOADAV
 177 extern void  InitLoadav __P((void));
 178 extern void  AddLoadav __P((char *));
 179 #endif
 180
 181 /* pty.c */
 182 extern int   OpenPTY __P((char **));
 183 extern void  InitPTY __P((int));
 184
 185 /* process.c */
 186 extern void  AddAlias __P((const char *name, const char *val , char **args, int count));
 187 struct alias * FindAlias __P((char *name));
 188 extern void  DelAlias __P((const char *name));
 189
 190 extern void  InitKeytab __P((void));
 191 extern void  ProcessInput __P((char *, int));
 192 #ifdef MAPKEYS
 193 extern void  ProcessInput2 __P((char *, int));
 194 #endif
 195 extern void  DoProcess __P((struct win *, char **, int *, struct paster *));
 196 extern void  DoAction  __P((struct action *, int));
 197 extern int   FindCommnr __P((char *));
 198 extern void  DoCommand __P((char **, int *));
 199 extern void  Activate __P((int));
 200 extern void  KillWindow __P((struct win *));
 201 extern void  SetForeWindow __P((struct win *));
 202 extern int   Parse __P((char *, int, char **, int *));
 203 extern void  SetEscape __P((struct acluser *, int, int));
 204 extern void  DoScreen __P((char *, char **));
 205 extern int   IsNumColon __P((char *, int, char *, int));
 206 extern void  ShowWindows __P((int));
 207 extern char *AddWindows __P((char *, int, int, int));
 208 extern char *AddWindowFlags __P((char *, int, struct win *));
 209 extern char *AddOtherUsers __P((char *, int, struct win *));
 210 extern int   WindowByNoN __P((char *));
 211 extern struct win *FindNiceWindow __P((struct win *, char *));
 212 #ifdef COPY_PASTE
 213 extern int   CompileKeys __P((char *, int, unsigned char *));
 214 #endif
 215 #ifdef RXVT_OSC
 216 extern void  RefreshXtermOSC __P((void));
 217 #endif
 218 extern int   ParseSaveStr __P((struct action *act, char **));
 219 extern int   ParseNum __P((struct action *act, int *));
 220 extern int   ParseSwitch __P((struct action *, int *));
 221 extern int   ParseAttrColor __P((char *, char *, int));
 222 extern void  ApplyAttrColor __P((int, struct mchar *));
 223 extern void  SwitchWindow __P((int));
 224 extern int   StuffKey __P((int));
 225
 226 /* termcap.c */
 227 extern int   InitTermcap __P((int, int));
 228 extern char *MakeTermcap __P((int));
 229 extern char *gettermcapstring __P((char *));
 230 #ifdef MAPKEYS
 231 extern int   remap __P((int, int));
 232 extern void  CheckEscape __P((void));
 233 #endif
 234 extern int   CreateTransTable __P((char *));
 235 extern void  FreeTransTable __P((void));
 236
 237 /* attacher.c */
 238 extern int   Attach __P((int));
 239 extern void  Attacher __P((void));
 240 extern sigret_t AttacherFinit __P(SIGPROTOARG);
 241 extern void  SendCmdMessage __P((char *, char *, char **));
 242
 243 /* display.c */
 244 extern struct display *MakeDisplay __P((char *, char *, char *, int, int, struct mode *));
 245 extern void  FreeDisplay __P((void));
 246 extern void  DefProcess __P((char **, int *));
 247 extern void  DefRedisplayLine __P((int, int, int, int));
 248 extern void  DefClearLine __P((int, int, int, int));
 249 extern int   DefRewrite __P((int, int, int, struct mchar *, int));
 250 extern int   DefResize __P((int, int));
 251 extern void  DefRestore __P((void));
 252 extern void  AddCStr __P((char *));
 253 extern void  AddCStr2 __P((char *, int));
 254 extern void  InitTerm __P((int));
 255 extern void  FinitTerm __P((void));
 256 extern void  PUTCHAR __P((int));
 257 extern void  PUTCHARLP __P((int));
 258 extern void  ClearAll __P((void));
 259 extern void  ClearArea __P((int, int, int, int, int, int, int, int));
 260 extern void  ClearLine __P((struct mline *, int, int, int, int));
 261 extern void  RefreshAll __P((int));
 262 extern void  RefreshArea __P((int, int, int, int, int));
 263 extern void  RefreshLine __P((int, int, int, int));
 264 extern void  Redisplay __P((int));
 265 extern void  RedisplayDisplays __P((int));
 266 extern void  ShowHStatus __P((char *));
 267 extern void  RefreshHStatus __P((void));
 268 extern void  DisplayLine __P((struct mline *, struct mline *, int, int, int));
 269 extern void  GotoPos __P((int, int));
 270 extern int   CalcCost __P((char *));
 271 extern void  ScrollH __P((int, int, int, int, int, struct mline *));
 272 extern void  ScrollV __P((int, int, int, int, int, int));
 273 extern void  PutChar __P((struct mchar *, int, int));
 274 extern void  InsChar __P((struct mchar *, int, int, int, struct mline *));
 275 extern void  WrapChar __P((struct mchar *, int, int, int, int, int, int, int));
 276 extern void  ChangeScrollRegion __P((int, int));
 277 extern void  InsertMode __P((int));
 278 extern void  KeypadMode __P((int));
 279 extern void  CursorkeysMode __P((int));
 280 extern void  ReverseVideo __P((int));
 281 extern void  CursorVisibility __P((int));
 282 extern void  MouseMode __P((int));
 283 extern void  SetFont __P((int));
 284 extern void  SetAttr __P((int));
 285 extern void  SetColor __P((int, int));
 286 extern void  SetRendition __P((struct mchar *));
 287 extern void  SetRenditionMline __P((struct mline *, int));
 288 extern void  MakeStatus __P((char *));
 289 extern void  RemoveStatus __P((void));
 290 extern int   ResizeDisplay __P((int, int));
 291 extern void  AddStr __P((char *));
 292 extern void  AddStrn __P((char *, int));
 293 extern void  Flush __P((void));
 294 extern void  freetty __P((void));
 295 extern void  Resize_obuf __P((void));
 296 #ifdef AUTO_NUKE
 297 extern void  NukePending __P((void));
 298 #endif
 299 extern void  SetCanvasWindow __P((struct canvas *, struct win *));
 300 extern int   MakeDefaultCanvas __P((void));
 301 extern int   AddCanvas __P((int));
 302 extern void  RemCanvas __P((void));
 303 extern void  OneCanvas __P((void));
 304 extern void  ResizeCanvas __P((struct canvas *));
 305 extern void  RecreateCanvasChain __P((void));
 306 extern int   RethinkDisplayViewports __P((void));
 307 extern void  RethinkViewportOffsets __P((struct canvas *));
 308 extern int   CountCanvasPerp __P((struct canvas *));
 309 extern void  EqualizeCanvas __P((struct canvas *, int));
 310 #ifdef RXVT_OSC
 311 extern void  ClearAllXtermOSC __P((void));
 312 extern void  SetXtermOSC __P((int, char *));
 313 #endif
 314 #ifdef COLOR
 315 extern int   color256to16 __P((int));
 316 # ifdef COLORS256
 317 extern int   color256to88 __P((int));
 318 # endif
 319 #endif
 320 extern void  ResetIdle __P((void));
 321 extern void  KillBlanker __P((void));
 322 extern void  DisplaySleep1000 __P((int, int));
 323 extern void  AutosaveLayout __P((struct layout *));
 324 extern void  LoadLayout __P((struct layout *, struct canvas *));
 325 extern void  NewLayout __P((char *, int));
 326 extern void  SaveLayout __P((char *, struct canvas *));
 327 extern void  ShowLayouts __P((int));
 328 extern struct layout *FindLayout __P((char *));
 329
 330 /* resize.c */
 331 extern int   ChangeWindowSize __P((struct win *, int, int, int));
 332 extern void  ChangeScreenSize __P((int, int, int));
 333 extern void  CheckScreenSize __P((int));
 334 extern char *xrealloc __P((char *, int));
 335 extern void  ResizeLayersToCanvases __P((void));
 336 extern void  ResizeLayer __P((struct layer *, int, int, struct display *));
 337 extern int   MayResizeLayer __P((struct layer *));
 338 extern void  FreeAltScreen __P((struct win *));
 339 extern void  EnterAltScreen __P((struct win *));
 340 extern void  LeaveAltScreen __P((struct win *));
 341
 342 /* sched.c */
 343 extern void  evenq __P((struct event *));
 344 extern void  evdeq __P((struct event *));
 345 extern void  SetTimeout __P((struct event *, int));
 346 extern void  sched __P((void));
 347
 348 /* socket.c */
 349 extern int   FindSocket __P((int *, int *, int *, char *));
 350 extern int   MakeClientSocket __P((int));
 351 extern int   MakeServerSocket __P((void));
 352 extern int   RecoverSocket __P((void));
 353 extern int   chsock __P((void));
 354 extern void  ReceiveMsg __P((void));
 355 extern void  SendCreateMsg __P((char *, struct NewWindow *));
 356 extern int   SendErrorMsg __P((char *, char *));
 357 extern int   SendAttachMsg __P((int, struct msg *, int));
 358
 359 /* misc.c */
 360 extern char *SaveStr __P((const char *));
 361 extern char *SaveStrn __P((const char *, int));
 362 extern char *InStr __P((char *, const char *));
 363 #ifndef HAVE_STRERROR
 364 extern char *strerror __P((int));
 365 #endif
 366 extern void  centerline __P((char *, int));
 367 extern void  leftline __P((char *, int));
 368 extern char *Filename __P((char *));
 369 extern char *stripdev __P((char *));
 370 #ifdef NEED_OWN_BCOPY
 371 extern void  xbcopy __P((char *, char *, int));
 372 #endif
 373 extern void  bclear __P((char *, int));
 374 extern void  closeallfiles __P((int));
 375 extern int   UserContext __P((void));
 376 extern void  UserReturn __P((int));
 377 extern int   UserStatus __P((void));
 378 #if defined(POSIX) || defined(hpux)
 379 extern void (*xsignal __P((int, void (*)SIGPROTOARG))) __P(SIGPROTOARG);
 380 #endif
 381 #ifndef HAVE_RENAME
 382 extern int   rename __P((char *, char *));
 383 #endif
 384 #if defined(HAVE_SETEUID) || defined(HAVE_SETREUID)
 385 extern void  xseteuid  __P((int));
 386 extern void  xsetegid  __P((int));
 387 #endif
 388 extern int   AddXChar __P((char *, int));
 389 extern int   AddXChars __P((char *, int, char *));
 390 extern void  xsetenv  __P((char *, char *));
 391 extern void  sleep1000 __P((int));
 392 #ifdef DEBUG
 393 extern void  opendebug __P((int, int));
 394 #endif
 395 #ifdef USEVARARGS
 396 # ifndef HAVE_VSNPRINTF
 397 extern int   xvsnprintf __P((char *, int, char *, va_list));
 398 # endif
 399 #else
 400 extern int   xsnprintf __P(());
 401 #endif
 402
 403
 404 /* acl.c */
 405 #ifdef MULTIUSER
 406 extern int   AclCheckPermWin __P((struct acluser *, int, struct win *));
 407 extern int   AclCheckPermCmd __P((struct acluser *, int, struct comm *));
 408 extern int   AclSetPerm __P((struct acluser *, struct acluser *, char *, char *));
 409 extern int   AclUmask __P((struct acluser *, char *, char **));
 410 extern int   UsersAcl __P((struct acluser *, int, char **));
 411 extern void  AclWinSwap __P((int, int));
 412 extern int   NewWindowAcl __P((struct win *, struct acluser *));
 413 extern void  FreeWindowAcl __P((struct win *));
 414 extern char *DoSu __P((struct acluser **, char *, char *, char *));
 415 extern int   AclLinkUser __P((char *, char *));
 416 #endif /* MULTIUSER */
 417 extern int   UserFreeCopyBuffer __P((struct acluser *));
 418 extern struct acluser **FindUserPtr __P((char *));
 419 extern int   UserAdd __P((char *, char *, struct acluser **));
 420 extern int   UserDel __P((char *, struct acluser **));
 421
 422
 423 /* braile.c */
 424 #ifdef HAVE_BRAILLE
 425 extern void  InitBraille __P((void));
 426 extern void  RefreshBraille __P((void));
 427 extern void  DoBrailleAction __P((struct action *, int));
 428 extern void  BGotoPos __P((struct layer *, int, int));
 429 extern void  BPutChar __P((struct layer *, struct mchar *, int, int));
 430 extern void  BPutStr __P((struct layer *, char *, int, struct mchar *, int, int));
 431 extern void  BCDisplayLine __P((struct layer *, struct mline *, int, int, int, int));
 432 #endif
 433
 434
 435
 436
 437 /* layer.c */
 438 extern void  LGotoPos __P((struct layer *, int, int));
 439 extern void  LPutChar __P((struct layer *, struct mchar *, int, int));
 440 extern void  LInsChar __P((struct layer *, struct mchar *, int, int, struct mline *));
 441 extern void  LPutStr __P((struct layer *, char *, int, struct mchar *, int, int));
 442 extern void  LPutWinMsg __P((struct layer *, char *, int, struct mchar *, int, int));
 443 extern void  LScrollH __P((struct layer *, int, int, int, int, int, struct mline *));
 444 extern void  LScrollV __P((struct layer *, int, int, int, int));
 445 extern void  LClearAll __P((struct layer *, int));
 446 extern void  LClearArea __P((struct layer *, int, int, int, int, int, int));
 447 extern void  LClearLine __P((struct layer *, int, int, int, int, struct mline *));
 448 extern void  LRefreshAll __P((struct layer *, int));
 449 extern void  LCDisplayLine __P((struct layer *, struct mline *, int, int, int, int));
 450 extern void  LCDisplayLineWrap __P((struct layer *, struct mline *, int, int, int, int));
 451 extern void  LSetRendition __P((struct layer *, struct mchar *));
 452 extern void  LWrapChar  __P((struct layer *, struct mchar *, int, int, int, int));
 453 extern void  LCursorVisibility __P((struct layer *, int));
 454 extern void  LSetFlow __P((struct layer *, int));
 455 extern void  LKeypadMode __P((struct layer *, int));
 456 extern void  LCursorkeysMode __P((struct layer *, int));
 457 extern void  LMouseMode __P((struct layer *, int));
 458 #ifdef USEVARARGS
 459 extern void  LMsg __P((int, char *, ...)) __attribute__((format(printf, 2, 3)));
 460 #else
 461 extern void  LMsg __P(());
 462 #endif
 463 extern void  KillLayerChain __P((struct layer *));
 464 extern int   InitOverlayPage __P((int, struct LayFuncs *, int));
 465 extern void  ExitOverlayPage __P((void));
 466
 467 /* teln.c */
 468 #ifdef BUILTIN_TELNET
 469 extern int   TelOpen __P((char **));
 470 extern int   TelConnect __P((struct win *));
 471 extern int   TelIsline __P((struct win *p));
 472 extern void  TelProcessLine __P((char **, int *));
 473 extern int   DoTelnet __P((char *, int *, int));
 474 extern int   TelIn __P((struct win *, char *, int, int));
 475 extern void  TelBreak __P((struct win *));
 476 extern void  TelWindowSize __P((struct win *));
 477 extern void  TelStatus __P((struct win *, char *, int));
 478 #endif
 479
 480 /* nethack.c */
 481 extern char *DoNLS __P((char *));
 482
 483 /* encoding.c */
 484 #ifdef ENCODINGS
 485 # ifdef UTF8
 486 extern void  InitBuiltinTabs __P((void));
 487 extern struct mchar *recode_mchar __P((struct mchar *, int, int));
 488 extern struct mline *recode_mline __P((struct mline *, int, int, int));
 489 extern int   FromUtf8 __P((int, int *));
 490 extern void  AddUtf8 __P((int));
 491 extern int   ToUtf8 __P((char *, int));
 492 extern int   ToUtf8_comb __P((char *, int));
 493 extern int   utf8_isdouble __P((int));
 494 extern int   utf8_iscomb __P((int));
 495 extern void  utf8_handle_comb __P((int, struct mchar *));
 496 extern int   ContainsSpecialDeffont __P((struct mline *, int, int, int));
 497 extern int   LoadFontTranslation __P((int, char *));
 498 extern void  LoadFontTranslationsForEncoding __P((int));
 499 # endif /* UTF8 */
 500 extern void  WinSwitchEncoding __P((struct win *, int));
 501 extern int   FindEncoding __P((char *));
 502 extern char *EncodingName __P((int));
 503 extern int   EncodingDefFont __P((int));
 504 extern void  ResetEncoding __P((struct win *));
 505 extern int   CanEncodeFont __P((int, int));
 506 extern int   DecodeChar __P((int, int, int *));
 507 extern int   RecodeBuf __P((unsigned char *, int, int, int, unsigned char *));
 508 # ifdef DW_CHARS
 509 extern int   PrepareEncodedChar __P((int));
 510 # endif
 511 #endif
 512 extern int   EncodeChar __P((char *, int, int, int *));