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