contrib/tcsh-6/sh.h

   1 /*
   2  * sh.h: Catch it all globals and includes file!
   3  */
   4 /*-
   5  * Copyright (c) 1980, 1991 The Regents of the University of California.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 #ifndef _h_sh
  33 #define _h_sh
  34
  35 #include "config.h"
  36
  37 #include <stddef.h>
  38 #include <signal.h>
  39
  40 #ifdef HAVE_ICONV
  41 # include <iconv.h>
  42 #endif
  43
  44 #ifdef HAVE_STDINT_H
  45 # include <stdint.h>
  46 #endif
  47
  48 #ifdef HAVE_INTTYPES_H
  49 # include <inttypes.h>
  50 #endif
  51
  52 #if !defined(HAVE_STDINT_H) && !defined(HAVE_INTTYPES_H) && !defined(WINNT_NATIVE)
  53 typedef unsigned long intptr_t;
  54 #endif
  55
  56 #ifndef EXTERN
  57 # define EXTERN extern
  58 #else /* !EXTERN */
  59 # ifdef WINNT_NATIVE
  60 #  define IZERO = 0
  61 #  define IZERO_STRUCT = {0}
  62 # endif /* WINNT_NATIVE */
  63 #endif /* EXTERN */
  64
  65 #ifndef IZERO
  66 # define IZERO
  67 #endif /* IZERO */
  68 #ifndef IZERO_STRUCT
  69 # define IZERO_STRUCT
  70 #endif /* IZERO_STRUCT */
  71
  72 #ifndef WINNT_NATIVE
  73 # define INIT_ZERO
  74 # define INIT_ZERO_STRUCT
  75 # define force_read xread
  76 #endif /*!WINNT_NATIVE */
  77
  78 #if defined(KANJI) && defined(WIDE_STRINGS) && defined(HAVE_NL_LANGINFO) && defined(CODESET)
  79 #define AUTOSET_KANJI
  80 #endif
  81
  82 /*
  83  * Sanity
  84  */
  85 #if defined(_POSIX_SOURCE) && !defined(POSIX)
  86 # define POSIX
  87 #endif
  88
  89 #if defined(POSIXJOBS) && !defined(BSDJOBS)
  90 # define BSDJOBS
  91 #endif
  92
  93 #define TMP_TEMPLATE ".XXXXXX"
  94
  95 #ifdef SHORT_STRINGS
  96 # define TCSH_S "S"
  97 # ifdef WIDE_STRINGS
  98 #include <wchar.h>
  99 #  ifdef UTF16_STRINGS
 100 typedef wint_t Char;
 101 #  else
 102 typedef wchar_t Char;
 103 #  endif
 104 typedef unsigned long uChar;
 105 typedef wint_t eChar; /* Can contain any Char value or CHAR_ERR */
 106 #define CHAR_ERR WEOF /* Pretty please, use bit 31... */
 107 #define normal_mbtowc(PWC, S, N) rt_mbtowc(PWC, S, N)
 108 #define reset_mbtowc() TCSH_IGNORE(mbtowc(NULL, NULL, 0))
 109 # else
 110 typedef short Char;
 111 typedef unsigned short uChar;
 112 typedef int eChar;
 113 #define CHAR_ERR (-1)
 114 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
 115 #define reset_mbtowc() ((void)0)
 116 # endif
 117 # define SAVE(a) (Strsave(str2short(a)))
 118 #else
 119 #define TCSH_S "s"
 120 typedef char Char;
 121 typedef unsigned char uChar;
 122 typedef int eChar;
 123 #define CHAR_ERR (-1)
 124 #define normal_mbtowc(PWC, S, N) ((void)(N), *(PWC) = (unsigned char)*(S), 1)
 125 #define reset_mbtowc() ((void)0)
 126 # define SAVE(a) (strsave(a))
 127 #endif
 128
 129 #if !defined(__inline) && !defined(__GNUC__) && !defined(_MSC_VER)
 130 #define __inline
 131 #endif
 132 #ifdef _MSC_VER
 133 #define TCSH_PTRDIFF_T_FMT "I"
 134 #else
 135 #define TCSH_PTRDIFF_T_FMT "t"
 136 #endif
 137 /* Elide unused argument warnings */
 138 #define USE(a)  (void) (a)
 139 #define TCSH_IGNORE(a)  tcsh_ignore((intptr_t)a)
 140 static __inline void tcsh_ignore(intptr_t a)
 141 {
 142     USE(a);
 143 }
 144
 145 /*
 146  * Return true if the path is absolute
 147  */
 148 #if defined(WINNT_NATIVE)
 149 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 150     (Isalpha((p)[0]) && (p)[1] == ':'))
 151 #elif defined(__CYGWIN__)
 152 # define ABSOLUTEP(p)   ((p)[0] == '/' || \
 153     (Isalpha((p)[0]) && (p)[1] == ':' && \
 154      ((p)[2] == '\0' || (p)[2] == '/')))
 155 #else /* !WINNT_NATIVE && !__CYGWIN__ */
 156 # define ABSOLUTEP(p)   (*(p) == '/')
 157 #endif /* WINNT_NATIVE || __CYGWIN__ */
 158
 159 /*
 160  * Fundamental definitions which may vary from system to system.
 161  *
 162  *      BUFSIZE         The i/o buffering size; also limits word size
 163  *      MAILINTVL       How often to mailcheck; more often is more expensive
 164  */
 165 #ifdef BUFSIZE
 166 # if       BUFSIZE < 4096
 167 #  undef   BUFSIZE
 168 #  define  BUFSIZE      4096    /* buffer size should be no less than this */
 169 # endif
 170 #else
 171 # define   BUFSIZE      4096
 172 #endif /* BUFSIZE */
 173
 174 #define FORKSLEEP       10      /* delay loop on non-interactive fork failure */
 175 #define MAILINTVL       600     /* 10 minutes */
 176
 177 #ifndef INBUFSIZE
 178 # define INBUFSIZE    2*BUFSIZE /* Num input characters on the command line */
 179 #endif /* INBUFSIZE */
 180
 181
 182 /*
 183  * What our builtin echo looks like
 184  */
 185 #define NONE_ECHO       0
 186 #define BSD_ECHO        1
 187 #define SYSV_ECHO       2
 188 #define BOTH_ECHO       (BSD_ECHO|SYSV_ECHO)
 189
 190 #ifndef ECHO_STYLE
 191 # if SYSVREL > 0
 192 #  define ECHO_STYLE SYSV_ECHO
 193 # else /* SYSVREL == 0 */
 194 #  define ECHO_STYLE BSD_ECHO
 195 # endif /* SYSVREL */
 196 #endif /* ECHO_STYLE */
 197
 198 /* values for noclobber */
 199 #define NOCLOBBER_DEFAULT  1
 200 #define NOCLOBBER_NOTEMPTY 2
 201 #define NOCLOBBER_ASK      4
 202
 203 /*
 204  * The shell moves std in/out/diag and the old std input away from units
 205  * 0, 1, and 2 so that it is easy to set up these standards for invoked
 206  * commands.
 207  */
 208 #define FSAFE   5               /* We keep the first 5 descriptors untouched */
 209 #define FSHTTY  15              /* /dev/tty when manip pgrps */
 210 #define FSHIN   16              /* Preferred desc for shell input */
 211 #define FSHOUT  17              /* ... shell output */
 212 #define FSHDIAG 18              /* ... shell diagnostics */
 213 #define FOLDSTD 19              /* ... old std input */
 214
 215 #ifdef PROF
 216 #define xexit(n)        done(n)
 217 #endif
 218
 219 #ifdef cray
 220 # define word word_t           /* sys/types.h defines word.. bad move! */
 221 #endif
 222
 223 #include <sys/types.h>
 224
 225 #ifdef cray
 226 # undef word
 227 #endif
 228
 229 /*
 230  * Path separator in environment variables
 231  */
 232 #ifndef PATHSEP
 233 # if defined(__EMX__) || defined(WINNT_NATIVE)
 234 #  define PATHSEP ';'
 235 # else /* unix */
 236 #  define PATHSEP ':'
 237 # endif /* __EMX__ || WINNT_NATIVE */
 238 #endif /* !PATHSEP */
 239
 240 #if defined(__HP_CXD_SPP) && !defined(__hpux)
 241 # include <sys/cnx_stat.h>
 242 # define stat stat64
 243 # define fstat fstat64
 244 # define lstat lstat64
 245 #endif /* __HP_CXD_SPP && !__hpux */
 246
 247 #ifdef HAVE_LONG_LONG
 248 typedef long long tcsh_number_t;
 249 #else
 250 typedef long tcsh_number_t;
 251 #endif
 252 /*
 253  * This macro compares the st_dev field of struct stat. On aix on ibmESA
 254  * st_dev is a structure, so comparison does not work.
 255  */
 256 #ifndef DEV_DEV_COMPARE
 257 # define DEV_DEV_COMPARE(x,y)   ((x) == (y))
 258 #endif /* DEV_DEV_COMPARE */
 259
 260 #ifdef _SEQUENT_
 261 # include <sys/procstats.h>
 262 #endif /* _SEQUENT_ */
 263 #if (defined(POSIX) || SYSVREL > 0) && !defined(WINNT_NATIVE)
 264 # include <sys/times.h>
 265 #endif /* (POSIX || SYSVREL > 0) && !WINNT_NATIVE */
 266
 267 #ifdef NLS
 268 # include <locale.h>
 269 #endif /* NLS */
 270
 271 #if !defined(_MINIX) && !defined(_VMS_POSIX) && !defined(WINNT_NATIVE) && !defined(__MVS__)
 272 # include <sys/param.h>
 273 #endif /* !_MINIX && !_VMS_POSIX && !WINNT_NATIVE && !__MVS__ */
 274 #include <sys/stat.h>
 275
 276 #if defined(BSDTIMES) || defined(BSDLIMIT)
 277 # include <sys/time.h>
 278 # if SYSVREL>3 && !defined(SCO) && !defined(sgi) && !defined(SNI) && !defined(sun) && !(defined(__alpha) && defined(__osf__)) && !defined(_SX) && !defined(__MVS__)
 279 #  include "/usr/ucbinclude/sys/resource.h"
 280 # else
 281 #  ifdef convex
 282 #   define sysrusage cvxrusage
 283 #   include <sys/sysinfo.h>
 284 #  else
 285 #   define sysrusage rusage
 286 #   include <sys/resource.h>
 287 #  endif /* convex */
 288 # endif /* SYSVREL>3 */
 289 #endif /* BSDTIMES */
 290
 291 #ifndef WINNT_NATIVE
 292 # ifndef POSIX
 293 #  ifdef TERMIO
 294 #   include <termio.h>
 295 #  else /* SGTTY */
 296 #   include <sgtty.h>
 297 #  endif /* TERMIO */
 298 # else /* POSIX */
 299 #  ifndef _UWIN
 300 #   include <termios.h>
 301 #  else
 302 #   include <termio.h>
 303 #  endif /* _UWIN */
 304 #  if SYSVREL > 3 || defined(__linux__)
 305 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 306 #   undef TIOCSLTC
 307 #   undef CSWTCH
 308 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 309 #  endif /* SYSVREL > 3 */
 310 # endif /* POSIX */
 311 #endif /* WINNT_NATIVE */
 312
 313 #ifdef sonyrisc
 314 # include <sys/ttold.h>
 315 #endif /* sonyrisc */
 316
 317 #if defined(POSIX) && !defined(WINNT_NATIVE)
 318 # include <unistd.h>
 319
 320 /*
 321  * the gcc+protoize version of <stdlib.h>
 322  * redefines malloc(), so we define the following
 323  * to avoid it.
 324  */
 325 # if defined(SYSMALLOC) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(sgi) || defined(_OSD_POSIX) || defined(__OpenBSD__)
 326 #  define NO_FIX_MALLOC
 327 #  include <stdlib.h>
 328 # else /* glibc */
 329 #  define _GNU_STDLIB_H
 330 #  define malloc __malloc
 331 #  define free __free
 332 #  define calloc __calloc
 333 #  define realloc __realloc
 334 #  include <stdlib.h>
 335 #  undef malloc
 336 #  undef free
 337 #  undef calloc
 338 #  undef realloc
 339 # endif /* glibc || sgi */
 340 #endif /* POSIX && !WINNT_NATIVE */
 341 #include <limits.h>
 342
 343 #if SYSVREL > 0 || defined(_IBMR2) || defined(_MINIX) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)
 344 # if !defined(pyr) && !defined(stellar)
 345 #  include <time.h>
 346 #  ifdef _MINIX
 347 #   define HZ CLOCKS_PER_SEC
 348 #  endif /* _MINIX */
 349 # endif /* !pyr && !stellar */
 350 #endif /* SYSVREL > 0 ||  _IBMR2 */
 351
 352 /* In the following ifdef the DECOSF1 has been commented so that later
 353  * versions of DECOSF1 will get TIOCGWINSZ. This might break older versions...
 354  */
 355 #if !((defined(SUNOS4) || defined(_MINIX) /* || defined(DECOSF1) */) && defined(TERMIO))
 356 # if !defined(_VMS_POSIX) && !defined(WINNT_NATIVE)
 357 #  include <sys/ioctl.h>
 358 #  if SYSVREL > 3 || defined(__linux__)
 359 #   undef TIOCGLTC      /* we don't need those, since POSIX has them */
 360 #   undef TIOCSLTC
 361 #   undef CSWTCH
 362 #   define CSWTCH _POSIX_VDISABLE       /* So job control works */
 363 #  endif /* SYSVREL > 3 */
 364 # endif
 365 #endif
 366
 367 #if (defined(__DGUX__) && defined(POSIX)) || defined(DGUX)
 368 #undef CSWTCH
 369 #define CSWTCH _POSIX_VDISABLE
 370 #endif
 371
 372 #if (!defined(FIOCLEX) && defined(SUNOS4)) || ((SYSVREL == 4) && !defined(_SEQUENT_) && !defined(SCO) && !defined(_SX)) && !defined(__MVS__)
 373 # include <sys/filio.h>
 374 #endif /* (!FIOCLEX && SUNOS4) || (SYSVREL == 4 && !_SEQUENT_ && !SCO && !_SX ) */
 375
 376 #if !defined(_MINIX) && !defined(supermax) && !defined(WINNT_NATIVE) && !defined(IRIS4D)
 377 # include <sys/file.h>
 378 #endif  /* !_MINIX && !supermax && !WINNT_NATIVE && !defined(IRIS4D) */
 379
 380 #if !defined(O_RDONLY) || !defined(O_NDELAY)
 381 # include <fcntl.h>
 382 #endif
 383
 384 #include <errno.h>
 385
 386 #include <setjmp.h>
 387
 388 #include <stdarg.h>
 389
 390 #ifdef HAVE_DIRENT_H
 391 # include <dirent.h>
 392 #else
 393 # ifdef HAVE_NDIR_H
 394 #  include <ndir.h>
 395 # else
 396 #  include <sys/dir.h>
 397 # endif
 398 # define dirent direct
 399 #endif /* HAVE_DIRENT_H */
 400 #ifndef HAVE_STRUCT_DIRENT_D_INO
 401 # define d_ino d_fileno
 402 #endif
 403 #if defined(hpux) || defined(sgi) || defined(OREO)
 404 # include <stdio.h>     /* So the fgetpwent() prototypes work */
 405 #endif /* hpux || sgi || OREO */
 406 #ifndef WINNT_NATIVE
 407 #include <pwd.h>
 408 #include <grp.h>
 409 #endif /* WINNT_NATIVE */
 410 #ifdef HAVE_SHADOW_H
 411 # include <shadow.h>
 412 #endif /* HAVE_SHADOW_H */
 413 #ifdef HAVE_AUTH_H
 414 # include <auth.h>
 415 #endif /* HAVE_AUTH_H */
 416 #if defined(BSD) && !defined(POSIX)
 417 # include <strings.h>
 418 # define strchr(a, b) index(a, b)
 419 # define strrchr(a, b) rindex(a, b)
 420 #else
 421 # include <string.h>
 422 #endif /* BSD */
 423
 424 /*
 425  * IRIX-5.0 has <sys/cdefs.h>, but most system include files do not
 426  * include it yet, so we include it here
 427  */
 428 #if defined(sgi) && SYSVREL > 3
 429 # include <sys/cdefs.h>
 430 #endif /* sgi && SYSVREL > 3 */
 431
 432 #ifdef REMOTEHOST
 433 # ifdef ISC
 434 #  undef MAXHOSTNAMELEN /* Busted headers? */
 435 # endif
 436
 437 # include <netinet/in.h>
 438 # include <arpa/inet.h>
 439 # include <sys/socket.h>
 440 # if (defined(_SS_SIZE) || defined(_SS_MAXSIZE)) && defined(HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY)
 441 #  if !defined(__APPLE__) /* Damnit, where is getnameinfo() folks? */
 442 #   if !defined(sgi)
 443 #    define INET6
 444 #   endif /* sgi */
 445 #  endif /* __APPLE__ */
 446 # endif
 447 # include <sys/uio.h>   /* For struct iovec */
 448 #endif /* REMOTEHOST */
 449
 450 #ifdef PURIFY
 451 /* exit normally, allowing purify to trace leaks */
 452 # define _exit          exit
 453 #endif /* !PURIFY */
 454
 455 /*
 456  * ASCII vs. EBCDIC
 457  */
 458 #if 'Z' - 'A' == 25
 459 # ifndef IS_ASCII
 460 #  define IS_ASCII
 461 # endif
 462 #endif
 463
 464 #include "sh.types.h"
 465
 466 #if !HAVE_DECL_GETPGRP
 467 # ifndef GETPGRP_VOID
 468 extern pid_t getpgrp (int);
 469 # else
 470 extern pid_t getpgrp (void);
 471 # endif
 472 #endif
 473
 474 #ifndef lint
 475 typedef ptr_t memalign_t;
 476 #else
 477 typedef union {
 478     char    am_char, *am_char_p;
 479     short   am_short, *am_short_p;
 480     int     am_int, *am_int_p;
 481     long    am_long, *am_long_p;
 482     float   am_float, *am_float_p;
 483     double  am_double, *am_double_p;
 484 }      *memalign_t;
 485
 486 # define malloc         lint_malloc
 487 # define free           lint_free
 488 # define realloc        lint_realloc
 489 # define calloc         lint_calloc
 490 #endif
 491
 492 #ifdef SYSMALLOC
 493 # define xmalloc(i)     smalloc(i)
 494 # define xrealloc(p, i) srealloc(p, i)
 495 # define xcalloc(n, s)  scalloc(n, s)
 496 # define xfree          sfree
 497 #else
 498 # define xmalloc(i)     malloc(i)
 499 # define xrealloc(p, i) realloc(p, i)
 500 # define xcalloc(n, s)  calloc(n, s)
 501 # define xfree          free
 502 #endif /* SYSMALLOC */
 503 #include "sh.char.h"
 504 #include "sh.err.h"
 505 #include "sh.dir.h"
 506 #include "sh.proc.h"
 507
 508 #include "pathnames.h"
 509
 510
 511 /*
 512  * C shell
 513  *
 514  * Bill Joy, UC Berkeley
 515  * October, 1978; May 1980
 516  *
 517  * Jim Kulp, IIASA, Laxenburg Austria
 518  * April, 1980
 519  */
 520
 521 #ifdef HESIOD
 522 # include <hesiod.h>
 523 #endif /* HESIOD */
 524
 525 #ifdef REMOTEHOST
 526 # include <netdb.h>
 527 #endif /* REMOTEHOST */
 528
 529 #ifndef MAXHOSTNAMELEN
 530 # ifdef HOST_NAME_MAX
 531 #  define MAXHOSTNAMELEN (HOST_NAME_MAX + 1)
 532 # elif defined(SCO) && (SYSVREL > 3)
 533 #  include <sys/socket.h>
 534 # else
 535 #  define MAXHOSTNAMELEN 256
 536 # endif
 537 #endif /* MAXHOSTNAMELEN */
 538
 539
 540
 541 #define eq(a, b)        (Strcmp(a, b) == 0)
 542
 543 /* globone() flags */
 544 #define G_ERROR         0       /* default action: error if multiple words */
 545 #define G_IGNORE        1       /* ignore the rest of the words            */
 546 #define G_APPEND        2       /* make a sentence by cat'ing the words    */
 547
 548 /*
 549  * Global flags
 550  */
 551 EXTERN int    chkstop IZERO;    /* Warned of stopped jobs... allow exit */
 552
 553 #if (defined(FIOCLEX) && defined(FIONCLEX)) || defined(F_SETFD)
 554 # define CLOSE_ON_EXEC
 555 #else
 556 EXTERN int    didcch IZERO;     /* Have closed unused fd's for child */
 557 #endif /* (FIOCLEX && FIONCLEX) || F_SETFD */
 558
 559 EXTERN int    didfds IZERO;     /* Have setup i/o fd's for child */
 560 EXTERN int    doneinp IZERO;    /* EOF indicator after reset from readc */
 561 EXTERN int    exiterr IZERO;    /* Exit if error or non-zero exit status */
 562 EXTERN int    child IZERO;      /* Child shell ... errors cause exit */
 563 EXTERN int    haderr IZERO;     /* Reset was because of an error */
 564 EXTERN int    intty IZERO;      /* Input is a tty */
 565 EXTERN int    intact IZERO;     /* We are interactive... therefore prompt */
 566 EXTERN int    justpr IZERO;     /* Just print because of :p hist mod */
 567 EXTERN int    loginsh IZERO;    /* We are a loginsh -> .login/.logout */
 568 EXTERN int    neednote IZERO;   /* Need to pnotify() */
 569 EXTERN int    noexec IZERO;     /* Don't execute, just syntax check */
 570 EXTERN int    pjobs IZERO;      /* want to print jobs if interrupted */
 571 EXTERN int    setintr IZERO;    /* Set interrupts on/off -> Wait intr... */
 572 EXTERN int    handle_interrupt IZERO;/* Are we currently handling an interrupt? */
 573 EXTERN int    havhash IZERO;    /* path hashing is available */
 574 EXTERN int    editing IZERO;    /* doing filename expansion and line editing */
 575 EXTERN int    noediting IZERO;  /* initial $term defaulted to noedit */
 576 EXTERN int    bslash_quote IZERO;/* PWP: tcsh-style quoting?  (in sh.c) */
 577 EXTERN int    anyerror IZERO;   /* propagate errors from pipelines/backq */
 578 EXTERN int    compat_expr IZERO;/* csh-style expressions? */
 579 EXTERN int    isoutatty IZERO;  /* is SHOUT a tty */
 580 EXTERN int    isdiagatty IZERO;/* is SHDIAG a tty */
 581 EXTERN int    is1atty IZERO;    /* is file descriptor 1 a tty (didfds mode) */
 582 EXTERN int    is2atty IZERO;    /* is file descriptor 2 a tty (didfds mode) */
 583 EXTERN int    arun IZERO;       /* Currently running multi-line-aliases */
 584 EXTERN int    implicit_cd IZERO;/* implicit cd enabled?(1=enabled,2=verbose) */
 585 EXTERN int    cdtohome IZERO;   /* cd without args goes home */
 586 EXTERN int    inheredoc IZERO;  /* Currently parsing a heredoc */
 587 EXTERN int    no_clobber IZERO; /* no clobber enabled? 1=yes 2=notempty, 4=ask*/
 588 /* We received a window change event */
 589 EXTERN volatile sig_atomic_t windowchg IZERO;
 590 #if defined(KANJI) && defined(SHORT_STRINGS) && defined(DSPMBYTE)
 591 EXTERN int    dspmbyte_ls;
 592 #endif
 593
 594 /*
 595  * Global i/o info
 596  */
 597 EXTERN Char   *arginp IZERO;    /* Argument input for sh -c and internal `xx` */
 598 EXTERN int     onelflg IZERO;   /* 2 -> need line for -t, 1 -> exit on read */
 599 extern Char   *ffile;           /* Name of shell file for $0 */
 600 extern int    dolzero;          /* if $?0 should return true... */
 601
 602 extern char *seterr;            /* Error message from scanner/parser */
 603 #ifndef errno
 604 extern int errno;               /* Error from C library routines */
 605 #endif
 606 extern int exitset;
 607 /* Temp name for << shell files in /tmp, for xfree() */
 608 EXTERN Char   *shtemp IZERO;
 609
 610 #ifdef BSDTIMES
 611 EXTERN struct timeval time0;    /* Time at which the shell started */
 612 EXTERN struct sysrusage ru0;
 613 #else
 614 # ifdef _SEQUENT_
 615 EXTERN timeval_t time0;         /* time at which shell started */
 616 EXTERN struct process_stats ru0;
 617 # else /* _SEQUENT_ */
 618 #  ifndef POSIX
 619 EXTERN time_t  time0;           /* time at which shell started */
 620 #  else /* POSIX */
 621 EXTERN clock_t time0;           /* time at which shell started */
 622 EXTERN clock_t clk_tck;
 623 #  endif /* POSIX */
 624 EXTERN struct tms shtimes;      /* shell and child times for process timing */
 625 # endif /* _SEQUENT_ */
 626 EXTERN time_t seconds0;
 627 #endif /* BSDTIMES */
 628
 629 #ifndef HZ
 630 # define HZ     100             /* for division into seconds */
 631 #endif
 632
 633 /*
 634  * Miscellany
 635  */
 636 EXTERN pid_t   mainpid;         /* pid of the main shell ($$) */
 637 EXTERN Char   *doldol;          /* Character pid for $$ */
 638 EXTERN pid_t   backpid;         /* pid of the last background job */
 639
 640
 641 /*
 642  * Ideally these should be uid_t, gid_t, pid_t. I cannot do that right now
 643  * cause pid's could be unsigned and that would break our -1 flag, and
 644  * uid_t and gid_t are not defined in all the systems so I would have to
 645  * make special cases for them. In the future...
 646  */
 647 EXTERN uid_t   uid, euid;       /* Invokers real and effective */
 648 EXTERN gid_t   gid, egid;       /* User and group ids */
 649 EXTERN pid_t   opgrp,           /* Initial pgrp and tty pgrp */
 650                shpgrp,          /* Pgrp of shell */
 651                tpgrp;           /* Terminal process group */
 652                                 /* If tpgrp is -1, leave tty alone! */
 653
 654 EXTERN Char   *Prompt;          /* The actual printed prompt or NULL */
 655 EXTERN Char   *RPrompt;         /* Right-hand side prompt or NULL */
 656
 657 /*
 658  * To be able to redirect i/o for builtins easily, the shell moves the i/o
 659  * descriptors it uses away from 0,1,2.
 660  * Ideally these should be in units which are closed across exec's
 661  * (this saves work) but for version 6, this is not usually possible.
 662  * The desired initial values for these descriptors are defined in
 663  * sh.local.h.
 664  */
 665 EXTERN int   SHIN IZERO;        /* Current shell input (script) */
 666 EXTERN int   SHOUT IZERO;       /* Shell output */
 667 EXTERN int   SHDIAG IZERO;      /* Diagnostic output... shell errs go here */
 668 EXTERN int   OLDSTD IZERO;      /* Old standard input (def for cmds) */
 669
 670
 671 #if (SYSVREL == 4 && defined(_UTS)) || defined(__linux__)
 672 /*
 673  * From: fadden@uts.amdahl.com (Andy McFadden)
 674  * we need sigsetjmp for UTS4, but not UTS2.1
 675  */
 676 # define SIGSETJMP
 677 #endif
 678
 679 /*
 680  * Error control
 681  *
 682  * Errors in scanning and parsing set up an error message to be printed
 683  * at the end and complete.  Other errors always cause a reset.
 684  * Because of source commands and .cshrc we need nested error catches.
 685  */
 686
 687 #ifdef SIGSETJMP
 688    typedef struct { const char *f; size_t l; sigjmp_buf j; } jmp_buf_t;
 689 # define tcsh_setjmp() sigsetjmp(reslab.j, 1)
 690 # define tcsh_longjmp()   siglongjmp(reslab.j, 1)
 691 #else
 692    typedef struct { const char *f; size_t l; jmp_buf j; } jmp_buf_t;
 693 # define tcsh_setjmp() setjmp(reslab.j)
 694 # define tcsh_longjmp()   longjmp(reslab.j, 1)
 695 #endif
 696
 697 #define setexit()  (reslab.f = __func__, \
 698                     reslab.l = __LINE__, \
 699                     tcsh_setjmp())
 700 #ifdef SETJMP_DEBUG
 701 # define _reset()   xprintf("reset %s %zu\n", reslab.f, reslab.l), \
 702                     flush(), tcsh_longjmp()
 703 #else
 704 # define _reset()   tcsh_longjmp()
 705 #endif
 706
 707 #define getexit(a) (void) ((a) = reslab)
 708 #define resexit(a) (void) (reslab = (a))
 709
 710 #define cpybin(a, b) (void) ((a) = (b))
 711
 712 extern jmp_buf_t reslab;
 713
 714 EXTERN Char   *gointr;          /* Label for an onintr transfer */
 715
 716 extern struct sigaction parintr;        /* Parents interrupt catch */
 717 extern struct sigaction parterm;        /* Parents terminate catch */
 718
 719 /*
 720  * Lexical definitions.
 721  *
 722  * All lexical space is allocated dynamically.
 723  * The eighth/sixteenth bit of characters is used to prevent recognition,
 724  * and eventually stripped.
 725  */
 726 #define         META            0200
 727 #define         ASCII           0177
 728 #ifdef WIDE_STRINGS             /* Implies SHORT_STRINGS */
 729 /* 31st char bit used for 'ing (not 32nd, we want all values nonnegative) */
 730 /*
 731  * Notice
 732  *
 733  * By fix for handling unicode name file, 32nd bit is used.
 734  * We need use '&' instead of '> or <' when comparing with INVALID_BYTE etc..
 735  * Cast to uChar is not recommended,
 736  *  becase Char is 4bytes but uChar is 8bytes on I32LP64. */
 737 # define        QUOTE           0x80000000
 738 # define        TRIM            0x7FFFFFFF /* Mask to strip quote bit */
 739 # define        UNDER           0x08000000 /* Underline flag */
 740 # define        BOLD            0x04000000 /* Bold flag */
 741 # define        STANDOUT        0x02000000 /* Standout flag */
 742 # define        LITERAL         0x01000000 /* Literal character flag */
 743 # define        ATTRIBUTES      0x0F000000 /* The bits used for attributes */
 744 # define        INVALID_BYTE    0xF0000000 /* Invalid character on input */
 745 # ifdef SOLARIS2
 746 #  define       CHAR            0x30FFFFFF /* Mask to mask out the character */
 747 # else
 748 #  define       CHAR            0x00FFFFFF /* Mask to mask out the character */
 749 # endif
 750 #elif defined (SHORT_STRINGS)
 751 # define        QUOTE   ((Char) 0100000)/* 16nth char bit used for 'ing */
 752 # define        TRIM            0073777 /* Mask to strip quote/lit bit */
 753 # define        UNDER           0040000 /* Underline flag */
 754 # define        BOLD            0020000 /* Bold flag */
 755 # define        STANDOUT        0010000 /* Standout flag */
 756 # define        LITERAL         0004000 /* Literal character flag */
 757 # define        ATTRIBUTES      0074000 /* The bits used for attributes */
 758 # define        INVALID_BYTE    0
 759 # define        CHAR            0000377 /* Mask to mask out the character */
 760 #else
 761 # define        QUOTE   ((Char) 0200)   /* Eighth char bit used for 'ing */
 762 # define        TRIM            0177    /* Mask to strip quote bit */
 763 # define        UNDER           0000000 /* No extra bits to do both */
 764 # define        BOLD            0000000 /* Bold flag */
 765 # define        STANDOUT        META    /* Standout flag */
 766 # define        LITERAL         0000000 /* Literal character flag */
 767 # define        ATTRIBUTES      0200    /* The bits used for attributes */
 768 # define        INVALID_BYTE    0
 769 # define        CHAR            0000177 /* Mask to mask out the character */
 770 #endif
 771 #define         CHAR_DBWIDTH    (LITERAL|(LITERAL-1))
 772
 773 # define        MAX_UTF32       0x7FFFFFFF      /* max UTF32 is U+7FFFFFFF */
 774
 775 EXTERN int     AsciiOnly;       /* If set only 7 bits expected in characters */
 776
 777 /*
 778  * Each level of input has a buffered input structure.
 779  * There are one or more blocks of buffered input for each level,
 780  * exactly one if the input is seekable and tell is available.
 781  * In other cases, the shell buffers enough blocks to keep all loops
 782  * in the buffer.
 783  *
 784  * If (WIDE_STRINGS && cantell), fbobp is always a byte offset, but
 785  * (fseekp - fbobp) and (feobp - fbobp) are character offsets (usable for
 786  * fbuf indexing).
 787  *
 788  * If (!cantell), all offsets are character offsets; if (!WIDE_STRINGS), there
 789  * is no difference between byte and character offsets.
 790  */
 791 EXTERN struct Bin {
 792     off_t   Bfseekp;            /* Seek pointer, generally != lseek() value */
 793     off_t   Bfbobp;             /* Seekp of beginning of buffers */
 794     off_t   Bfeobp;             /* Seekp of end of buffers */
 795     int     Bfblocks;           /* Number of buffer blocks */
 796     Char  **Bfbuf;              /* The array of buffer blocks */
 797 #ifdef WIDE_STRINGS
 798     /* Number of bytes in each character if (cantell) */
 799     unsigned char Bfclens[BUFSIZE + 1];
 800 #endif
 801 }       B;
 802
 803 /*
 804  * This structure allows us to seek inside aliases
 805  */
 806 struct Ain {
 807     int type;
 808 #define TCSH_I_SEEK      0              /* Invalid seek */
 809 #define TCSH_A_SEEK      1              /* Alias seek */
 810 #define TCSH_F_SEEK      2              /* File seek */
 811 #define TCSH_E_SEEK      3              /* Eval seek */
 812     union {
 813         off_t _f_seek;          /* A byte offset if (cantell) */
 814         Char* _c_seek;
 815     } fc;
 816 #define f_seek fc._f_seek
 817 #define c_seek fc._c_seek
 818     Char **a_seek;
 819 } ;
 820
 821 extern int aret;                /* Type of last char returned */
 822 #define SEEKEQ(a, b) ((a)->type == (b)->type && \
 823                       (a)->f_seek == (b)->f_seek && \
 824                       (a)->a_seek == (b)->a_seek)
 825
 826 #define fseekp  B.Bfseekp
 827 #define fbobp   B.Bfbobp
 828 #define feobp   B.Bfeobp
 829 #define fblocks B.Bfblocks
 830 #define fbuf    B.Bfbuf
 831 #define fclens  B.Bfclens
 832
 833 /*
 834  * The shell finds commands in loops by reseeking the input
 835  * For whiles, in particular, it reseeks to the beginning of the
 836  * line the while was on; hence the while placement restrictions.
 837  */
 838 EXTERN struct Ain lineloc;
 839
 840 EXTERN int    cantell;          /* Is current source tellable ? */
 841
 842 /*
 843  * Input lines are parsed into doubly linked circular
 844  * lists of words of the following form.
 845  */
 846 struct wordent {
 847     Char   *word;
 848     struct wordent *prev;
 849     struct wordent *next;
 850 };
 851
 852 /*
 853  * During word building, both in the initial lexical phase and
 854  * when expanding $ variable substitutions, expansion by `!' and `$'
 855  * must be inhibited when reading ahead in routines which are themselves
 856  * processing `!' and `$' expansion or after characters such as `\' or in
 857  * quotations.  The following flags are passed to the getC routines
 858  * telling them which of these substitutions are appropriate for the
 859  * next character to be returned.
 860  */
 861 #define DODOL   1
 862 #define DOEXCL  2
 863 #define DOALL   DODOL|DOEXCL
 864
 865 /*
 866  * Labuf implements a general buffer for lookahead during lexical operations.
 867  * Text which is to be placed in the input stream can be stuck here.
 868  * We stick parsed ahead $ constructs during initial input,
 869  * process id's from `$$', and modified variable values (from qualifiers
 870  * during expansion in sh.dol.c) here.
 871  */
 872 extern struct Strbuf labuf;
 873 EXTERN size_t lap; /* N/A if == labuf.len, index into labuf.s otherwise */
 874
 875 /*
 876  * Parser structure
 877  *
 878  * Each command is parsed to a tree of command structures and
 879  * flags are set bottom up during this process, to be propagated down
 880  * as needed during the semantics/exeuction pass (sh.sem.c).
 881  */
 882 struct command {
 883     unsigned char   t_dtyp;     /* Type of node                  */
 884 #define NODE_COMMAND    1       /* t_dcom <t_dlef >t_drit        */
 885 #define NODE_PAREN      2       /* ( t_dspr ) <t_dlef >t_drit    */
 886 #define NODE_PIPE       3       /* t_dlef | t_drit               */
 887 #define NODE_LIST       4       /* t_dlef ; t_drit               */
 888 #define NODE_OR         5       /* t_dlef || t_drit              */
 889 #define NODE_AND        6       /* t_dlef && t_drit              */
 890     unsigned char   t_nice;     /* Nice value                    */
 891 #ifdef apollo
 892     unsigned char   t_systype;  /* System environment            */
 893 #endif
 894     unsigned long   t_dflg;     /* Flags, e.g. F_AMPERSAND|...   */
 895 /* save these when re-doing      */
 896 #ifndef apollo
 897 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP|F_HUP)
 898 #else
 899 #define F_SAVE  (F_NICE|F_TIME|F_NOHUP||F_HUP|F_VER)
 900 #endif
 901 #define F_AMPERSAND     (1<<0)  /* executes in background        */
 902 #define F_APPEND        (1<<1)  /* output is redirected >>       */
 903 #define F_PIPEIN        (1<<2)  /* input is a pipe               */
 904 #define F_PIPEOUT       (1<<3)  /* output is a pipe              */
 905 #define F_NOFORK        (1<<4)  /* don't fork, last ()ized cmd   */
 906 #define F_NOINTERRUPT   (1<<5)  /* should be immune from intr's */
 907 /* spare */
 908 #define F_STDERR        (1<<7)  /* redirect unit 2 with unit 1   */
 909 #define F_OVERWRITE     (1<<8)  /* output was !                  */
 910 #define F_READ          (1<<9)  /* input redirection is <<       */
 911 #define F_REPEAT        (1<<10) /* reexec aft if, repeat,...     */
 912 #define F_NICE          (1<<11) /* t_nice is meaningful          */
 913 #define F_NOHUP         (1<<12) /* nohup this command            */
 914 #define F_TIME          (1<<13) /* time this command             */
 915 #define F_BACKQ         (1<<14) /* command is in ``              */
 916 #define F_HUP           (1<<15) /* hup this command              */
 917 #ifdef apollo
 918 #define F_VER           (1<<16) /* execute command under SYSTYPE */
 919 #endif
 920     union {
 921         Char   *T_dlef;         /* Input redirect word           */
 922         struct command *T_dcar; /* Left part of list/pipe        */
 923     }       L;
 924     union {
 925         Char   *T_drit;         /* Output redirect word          */
 926         struct command *T_dcdr; /* Right part of list/pipe       */
 927     }       R;
 928 #define t_dlef  L.T_dlef
 929 #define t_dcar  L.T_dcar
 930 #define t_drit  R.T_drit
 931 #define t_dcdr  R.T_dcdr
 932     Char  **t_dcom;             /* Command/argument vector       */
 933     struct command *t_dspr;     /* Pointer to ()'d subtree       */
 934 };
 935
 936
 937 /*
 938  * The keywords for the parser
 939  */
 940 #define TC_BREAK        0
 941 #define TC_BRKSW        1
 942 #define TC_CASE         2
 943 #define TC_DEFAULT      3
 944 #define TC_ELSE         4
 945 #define TC_END          5
 946 #define TC_ENDIF        6
 947 #define TC_ENDSW        7
 948 #define TC_EXIT         8
 949 #define TC_FOREACH      9
 950 #define TC_GOTO         10
 951 #define TC_IF           11
 952 #define TC_LABEL        12
 953 #define TC_LET          13
 954 #define TC_SET          14
 955 #define TC_SWITCH       15
 956 #define TC_TEST         16
 957 #define TC_THEN         17
 958 #define TC_WHILE        18
 959
 960 /*
 961  * These are declared here because they want to be
 962  * initialized in sh.init.c (to allow them to be made readonly)
 963  */
 964
 965 #if defined(hpux) && defined(__STDC__) && !defined(__GNUC__)
 966     /* Avoid hpux ansi mode spurious warnings */
 967 typedef void (*bfunc_t) ();
 968 #else
 969 typedef void (*bfunc_t) (Char **, struct command *);
 970 #endif /* hpux && __STDC__ && !__GNUC__ */
 971
 972 extern const struct biltins {
 973     const char   *bname;
 974     bfunc_t bfunct;
 975     int     minargs, maxargs;
 976 } bfunc[];
 977 extern int nbfunc;
 978 #ifdef WINNT_NATIVE
 979 extern struct biltins  nt_bfunc[];
 980 extern int nt_nbfunc;
 981 #endif /* WINNT_NATIVE*/
 982 extern int bequiet;
 983
 984 extern struct srch {
 985     const char *s_name;
 986     int  s_value;
 987 } srchn[];
 988 extern int nsrchn;
 989
 990 /*
 991  * Structure defining the existing while/foreach loops at this
 992  * source level.  Loops are implemented by seeking back in the
 993  * input.  For foreach (fe), the word list is attached here.
 994  */
 995 EXTERN struct whyle {
 996     struct Ain   w_start;       /* Point to restart loop */
 997     struct Ain   w_end;         /* End of loop (0 if unknown) */
 998     Char  **w_fe, **w_fe0;      /* Current/initial wordlist for fe */
 999     Char   *w_fename;           /* Name for fe */
1000     struct whyle *w_next;       /* Next (more outer) loop */
1001 }      *whyles;
1002
1003 /*
1004  * Variable structure
1005  *
1006  * Aliases and variables are stored in AVL balanced binary trees.
1007  */
1008 EXTERN struct varent {
1009     Char  **vec;                /* Array of words which is the value */
1010     Char   *v_name;             /* Name of variable/alias */
1011     int     v_flags;            /* Flags */
1012 #define VAR_ALL         -1
1013 #define VAR_READONLY    1
1014 #define VAR_READWRITE   2
1015 #define VAR_NOGLOB      4
1016 #define VAR_NOERROR     8
1017 #define VAR_FIRST       32
1018 #define VAR_LAST        64
1019     struct varent *v_link[3];   /* The links, see below */
1020     int     v_bal;              /* Balance factor */
1021 }       shvhed IZERO_STRUCT, aliases IZERO_STRUCT;
1022
1023 #define v_left          v_link[0]
1024 #define v_right         v_link[1]
1025 #define v_parent        v_link[2]
1026
1027 #define adrof(v)        adrof1(v, &shvhed)
1028 #define varval(v)       value1(v, &shvhed)
1029
1030 /*
1031  * The following are for interfacing redo substitution in
1032  * aliases to the lexical routines.
1033  */
1034 #define HIST_PURGE      -500000
1035 EXTERN struct wordent *alhistp IZERO_STRUCT;/* Argument list (first) */
1036 EXTERN struct wordent *alhistt IZERO_STRUCT;/* Node after last in arg list */
1037 EXTERN Char  **alvec IZERO_STRUCT,
1038               *alvecp IZERO_STRUCT;/* The (remnants of) alias vector */
1039
1040 /*
1041  * Filename/command name expansion variables
1042  */
1043
1044 #ifndef MAXPATHLEN
1045 # ifdef PATH_MAX
1046 #  define MAXPATHLEN PATH_MAX
1047 # else
1048 #  define MAXPATHLEN 2048
1049 # endif
1050 #endif /* MAXPATHLEN */
1051
1052 #ifndef HAVENOLIMIT
1053 /*
1054  * resource limits
1055  */
1056 extern struct limits {
1057     int         limconst;
1058     const char *limname;
1059     int         limdiv;
1060     const char *limscale;
1061 } limits[];
1062 #endif /* !HAVENOLIMIT */
1063
1064 /*
1065  * History list
1066  *
1067  * Each history list entry contains an embedded wordlist
1068  * from the scanner, a number for the event, and a reference count
1069  * to aid in discarding old entries.
1070  *
1071  * Essentially "invisible" entries are put on the history list
1072  * when history substitution includes modifiers, and thrown away
1073  * at the next discarding since their event numbers are very negative.
1074  */
1075 EXTERN struct Hist {
1076     struct wordent Hlex;
1077     int     Hnum;                /* eventno when inserted into history list  */
1078     int     Href;
1079     time_t  Htime;
1080     Char   *histline;
1081     struct Hist *Hnext, *Hprev;         /* doubly linked list */
1082     unsigned Hhash;                     /* hash value of command line */
1083 }       Histlist IZERO_STRUCT;
1084
1085 extern struct wordent paraml;   /* Current lexical word list */
1086 EXTERN int     eventno;         /* Next events number */
1087 EXTERN int     lastev;          /* Last event reference (default) */
1088
1089 EXTERN Char    HIST;            /* history invocation character */
1090 EXTERN Char    HISTSUB;         /* auto-substitute character */
1091 EXTERN Char    PRCH;            /* Prompt symbol for regular users */
1092 EXTERN Char    PRCHROOT;        /* Prompt symbol for root */
1093
1094 /*
1095  * For operating systems with single case filenames (OS/2)
1096  */
1097 #ifdef CASE_INSENSITIVE
1098 # ifdef WIDE_STRINGS
1099 #  define samecase(x) (towlower(x))
1100 # else
1101 #  define samecase(x) (isupper((unsigned char)(x)) ? \
1102                        tolower((unsigned char)(x)) : (x))
1103 # endif
1104 #else
1105 # define samecase(x) (x)
1106 #endif /* CASE_INSENSITIVE */
1107
1108 /*
1109  * strings.h:
1110  */
1111 #ifndef SHORT_STRINGS
1112 #define Strchr(a, b)            strchr(a, b)
1113 #define Strrchr(a, b)           strrchr(a, b)
1114 #define Strcat(a, b)            strcat(a, b)
1115 #define Strncat(a, b, c)        strncat(a, b, c)
1116 #define Strcpy(a, b)            strcpy(a, b)
1117 #define Strncpy(a, b, c)        strncpy(a, b, c)
1118 #define Strlen(a)               strlen(a)
1119 #define Strcmp(a, b)            strcmp(a, b)
1120 #define Strncmp(a, b, c)        strncmp(a, b, c)
1121 #define Strcasecmp(a, b)        strcasecmp(a, b)
1122
1123 #define Strspl(a, b)            strspl(a, b)
1124 #define Strnsave(a, b)          strnsave(a, b)
1125 #define Strsave(a)              strsave(a)
1126 #define Strend(a)               strend(a)
1127 #define Strstr(a, b)            strstr(a, b)
1128
1129 #define str2short(a)            ((void *)(intptr_t)(a))
1130 #define blk2short(a)            saveblk(a)
1131 #define short2blk(a)            saveblk(a)
1132 #define short2str(a)            caching_strip(a)
1133 #else
1134 #if defined(WIDE_STRINGS) && !defined(UTF16_STRINGS)
1135 #define Strchr(a, b)            wcschr(a, b)
1136 #define Strrchr(a, b)           wcsrchr(a, b)
1137 #define Strcat(a, b)            wcscat(a, b)
1138 #define Strncat(a, b, c)        wcsncat(a, b, c)
1139 #define Strcpy(a, b)            wcscpy(a, b)
1140 #define Strncpy(a, b, c)        wcsncpy(a, b, c)
1141 #define Strlen(a)               wcslen(a)
1142 #define Strcmp(a, b)            wcscmp(a, b)
1143 #define Strncmp(a, b, c)        wcsncmp(a, b, c)
1144 #else
1145 #define Strchr(a, b)            s_strchr(a, b)
1146 #define Strrchr(a, b)           s_strrchr(a, b)
1147 #define Strcat(a, b)            s_strcat(a, b)
1148 #define Strncat(a, b, c)        s_strncat(a, b, c)
1149 #define Strcpy(a, b)            s_strcpy(a, b)
1150 #define Strncpy(a, b, c)        s_strncpy(a, b, c)
1151 #define Strlen(a)               s_strlen(a)
1152 #define Strcmp(a, b)            s_strcmp(a, b)
1153 #define Strncmp(a, b, c)        s_strncmp(a, b, c)
1154 #endif
1155 #define Strcasecmp(a, b)        s_strcasecmp(a, b)
1156
1157 #define Strspl(a, b)            s_strspl(a, b)
1158 #define Strnsave(a, b)          s_strnsave(a, b)
1159 #define Strsave(a)              s_strsave(a)
1160 #define Strend(a)               s_strend(a)
1161 #define Strstr(a, b)            s_strstr(a, b)
1162 #endif
1163
1164 #define TCSH_MODIFIERS  "ehlqrstuxQ"
1165
1166 /*
1167  * setname is a macro to save space (see sh.err.c)
1168  */
1169 EXTERN const char   *bname;
1170
1171 #define setname(a)      (bname = (a))
1172
1173 #ifdef VFORK
1174 EXTERN Char   *Vsav;
1175 EXTERN Char   *Vdp;
1176 EXTERN Char   *Vexpath;
1177 EXTERN char  **Vt;
1178 #endif /* VFORK */
1179
1180 EXTERN Char  **evalvec;
1181 EXTERN Char   *evalp;
1182
1183 extern struct mesg {
1184     const char   *iname;        /* name from /usr/include */
1185     const char *pname;          /* print name */
1186 } mesg[];
1187
1188 /* word_chars is set by default to WORD_CHARS (or WORD_CHARS_VI) but can
1189    be overridden by the wordchars variable--if unset, reverts to
1190    WORD_CHARS (or WORD_CHARS_VI) */
1191
1192 EXTERN Char   *word_chars;
1193
1194 #define WORD_CHARS "*?_-.[]~="  /* default chars besides alnums in words */
1195 #define WORD_CHARS_VI "_"       /* default chars besides alnums in words */
1196
1197 EXTERN Char   *STR_SHELLPATH;
1198
1199 #ifdef _PATH_BSHELL
1200 EXTERN Char   *STR_BSHELL;
1201 #endif
1202 EXTERN Char   *STR_WORD_CHARS;
1203 EXTERN Char   *STR_WORD_CHARS_VI;
1204 EXTERN Char  **STR_environ IZERO;
1205
1206 extern int     dont_free;       /* Tell free that we are in danger if we free */
1207
1208 extern Char    *INVPTR;
1209 extern Char    **INVPPTR;
1210
1211 extern char    *progname;
1212 extern int      tcsh;
1213 extern int      xlate_cr;
1214 extern int      output_raw;
1215 extern int      lbuffed;
1216 extern time_t   Htime;
1217 extern int      numeof;
1218 extern int      insource;
1219 extern char     linbuf[];
1220 extern char     *linp;
1221 extern int      nsig;
1222 #ifdef VFORK
1223 extern int      use_fork;
1224 #endif
1225 extern int      tellwhat;
1226 extern int      NoNLSRebind;
1227 #if !HAVE_DECL_ENVIRON
1228 extern char   **environ;
1229 #endif
1230
1231 #include "tc.h"
1232
1233 #ifndef WINNT_NATIVE
1234 # ifdef NLS_CATALOGS
1235 #  ifdef HAVE_FEATURES_H
1236 #   include <features.h>
1237 #  endif
1238 #  ifdef HAVE_NL_LANGINFO
1239 #   include <langinfo.h>
1240 #  endif
1241 #  ifdef __uxps__
1242 #   define gettxt gettxt_ds
1243 #  endif
1244 #  include <nl_types.h>
1245 #  ifdef __uxps__
1246 #   undef gettxt
1247 #  endif
1248 EXTERN nl_catd catd;
1249 #  if defined(HAVE_ICONV) && defined(HAVE_NL_LANGINFO)
1250 #   define CGETS(b, c, d)       iconv_catgets(catd, b, c, d)
1251 #  else
1252 #   define CGETS(b, c, d)       xcatgets(catd, b, c, d)
1253 #  endif
1254 #  define CSAVS(b, c, d)        strsave(CGETS(b, c, d))
1255 # else
1256 #  define CGETS(b, c, d)        d
1257 #  define CSAVS(b, c, d)        d
1258 # endif
1259 #else /* WINNT_NATIVE */
1260 # define CGETS(b, c, d) nt_cgets( b, c, d)
1261 # define CSAVS(b, c, d) strsave(CGETS(b, c, d))
1262 #endif /* WINNT_NATIVE */
1263
1264 #if defined(FILEC)
1265 extern int    filec;
1266 #endif /* FILEC */
1267
1268 #include "sh.decls.h"
1269 /*
1270  * Since on some machines characters are unsigned, and the signed
1271  * keyword is not universally implemented, we treat all characters
1272  * as unsigned and sign extend them where we need.
1273  */
1274 #define SIGN_EXTEND_CHAR(a)     (((a) & 0x80) ? ((a) | ~0x7f) : (a))
1275
1276 /*
1277  * explanation for use by the "--help" option
1278  */
1279 #define HELP_STRING "\
1280 -b file         batch mode, read and execute commands from `file' \n\
1281 -c command      run `command' from next argument \n\
1282 -d              load directory stack from `~/.cshdirs' \n\
1283 -Dname[=value]  define environment variable `name' to `value' (DomainOS only) \n\
1284 -e              exit on any error \n\
1285 -f              start faster by ignoring the start-up file \n\
1286 -F              use fork() instead of vfork() when spawning (ConvexOS only) \n\
1287 -i              interactive, even when input is not from a terminal \n\
1288 -l              act as a login shell, must be the only option specified \n\
1289 -m              load the start-up file, whether or not owned by effective user \n\
1290 -n file         no execute mode, just check syntax of the following `file' \n\
1291 -q              accept SIGQUIT for running under a debugger \n\
1292 -s              read commands from standard input \n\
1293 -t              read one line from standard input \n\
1294 -v              echo commands after history substitution \n\
1295 -V              like -v but including commands read from the start-up file \n\
1296 -x              echo commands immediately before execution \n\
1297 -X              like -x but including commands read from the start-up file \n\
1298 --help          print this message and exit \n\
1299 --version       print the version shell variable and exit \n\
1300 \nSee the tcsh(1) manual page for detailed information.\n"
1301
1302 #include "tc.nls.h"
1303
1304 #define TEXP_IGNORE 1   /* in ignore, it means to ignore value, just parse */
1305 #define TEXP_NOGLOB 2   /* in ignore, it means not to globone */
1306
1307
1308 #endif /* _h_sh */