LXR perl/perlsdio.h

   1/*    perlsdio.h
   2 *
   3 *    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001,
   4 *    2002, 2003, 2006, 2007, by Larry Wall and others
   5 *
   6 *    You may distribute under the terms of either the GNU General Public
   7 *    License or the Artistic License, as specified in the README file.
   8 *
   9 */
  10
  11#ifdef PERLIO_IS_STDIO
  12
  13#ifdef NETWARE
  14        #include "nwstdio.h"
  15#else
  16
  17/*
  18 * This file #define-s the PerlIO_xxx abstraction onto stdio functions.
  19 * Make this as close to original stdio as possible.
  20 */
  21#define PerlIO                          FILE
  22#define PerlIO_stderr()                 PerlSIO_stderr
  23#define PerlIO_stdout()                 PerlSIO_stdout
  24#define PerlIO_stdin()                  PerlSIO_stdin
  25
  26#define PerlIO_isutf8(f)                0
  27
  28#define PerlIO_printf                   PerlSIO_printf
  29#define PerlIO_stdoutf                  PerlSIO_stdoutf
  30#define PerlIO_vprintf(f,fmt,a)         PerlSIO_vprintf(f,fmt,a)
  31#define PerlIO_write(f,buf,count)       PerlSIO_fwrite(buf,1,count,f)
  32#define PerlIO_unread(f,buf,count)      (-1)
  33#define PerlIO_open                     PerlSIO_fopen
  34#define PerlIO_fdopen                   PerlSIO_fdopen
  35#define PerlIO_reopen                   PerlSIO_freopen
  36#define PerlIO_close(f)                 PerlSIO_fclose(f)
  37#define PerlIO_puts(f,s)                PerlSIO_fputs(f,s)
  38#define PerlIO_putc(f,c)                PerlSIO_fputc(f,c)
  39#if defined(VMS)
  40#  if defined(__DECC)
  41     /* Unusual definition of ungetc() here to accomodate fast_sv_gets()'
  42      * belief that it can mix getc/ungetc with reads from stdio buffer */
  43     int decc$ungetc(int __c, FILE *__stream);
  44#    define PerlIO_ungetc(f,c) ((c) == EOF ? EOF : \
  45            ((*(f) && !((*(f))->_flag & _IONBF) && \
  46            ((*(f))->_ptr > (*(f))->_base)) ? \
  47            ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,f)))
  48#  else
  49#    define PerlIO_ungetc(f,c)          ungetc(c,f)
  50#  endif
  51   /* Work around bug in DECCRTL/AXP (DECC v5.x) and some versions of old
  52    * VAXCRTL which causes read from a pipe after EOF has been returned
  53    * once to hang.
  54    */
  55#  define PerlIO_getc(f) \
  56                (feof(f) ? EOF : getc(f))
  57#  define PerlIO_read(f,buf,count) \
  58                (feof(f) ? 0 : (SSize_t)fread(buf,1,count,f))
  59#  define PerlIO_tell(f)                ftell(f)
  60#else
  61#  define PerlIO_getc(f)                PerlSIO_fgetc(f)
  62#  define PerlIO_ungetc(f,c)            PerlSIO_ungetc(c,f)
  63#  define PerlIO_read(f,buf,count)      (SSize_t)PerlSIO_fread(buf,1,count,f)
  64#  define PerlIO_tell(f)                PerlSIO_ftell(f)
  65#endif
  66#define PerlIO_eof(f)                   PerlSIO_feof(f)
  67#define PerlIO_getname(f,b)             fgetname(f,b)
  68#define PerlIO_error(f)                 PerlSIO_ferror(f)
  69#define PerlIO_fileno(f)                PerlSIO_fileno(f)
  70#define PerlIO_clearerr(f)              PerlSIO_clearerr(f)
  71#define PerlIO_flush(f)                 PerlSIO_fflush(f)
  72#if defined(VMS) && !defined(__DECC)
  73/* Old VAXC RTL doesn't reset EOF on seek; Perl folk seem to expect this */
  74#define PerlIO_seek(f,o,w)      (((f) && (*f) && ((*f)->_flag &= ~_IOEOF)),fseek(f,o,w))
  75#else
  76#  define PerlIO_seek(f,o,w)            PerlSIO_fseek(f,o,w)
  77#endif
  78
  79#define PerlIO_rewind(f)                PerlSIO_rewind(f)
  80#define PerlIO_tmpfile()                PerlSIO_tmpfile()
  81
  82#define PerlIO_importFILE(f,fl)         (f)
  83#define PerlIO_exportFILE(f,fl)         (f)
  84#define PerlIO_findFILE(f)              (f)
  85#define PerlIO_releaseFILE(p,f)         ((void) 0)
  86
  87#ifdef HAS_SETLINEBUF
  88#define PerlIO_setlinebuf(f)            PerlSIO_setlinebuf(f);
  89#else
  90#define PerlIO_setlinebuf(f)            PerlSIO_setvbuf(f, NULL, _IOLBF, 0);
  91#endif
  92
  93/* Now our interface to Configure's FILE_xxx macros */
  94
  95#ifdef USE_STDIO_PTR
  96#define PerlIO_has_cntptr(f)            1
  97#define PerlIO_get_ptr(f)               PerlSIO_get_ptr(f)
  98#define PerlIO_get_cnt(f)               PerlSIO_get_cnt(f)
  99
 100#ifdef STDIO_CNT_LVALUE
 101#define PerlIO_canset_cnt(f)            1
 102#define PerlIO_set_cnt(f,c)             PerlSIO_set_cnt(f,c)
 103#ifdef STDIO_PTR_LVALUE
 104#ifdef STDIO_PTR_LVAL_NOCHANGE_CNT
 105#define PerlIO_fast_gets(f)             1
 106#endif
 107#endif /* STDIO_PTR_LVALUE */
 108#else /* STDIO_CNT_LVALUE */
 109#define PerlIO_canset_cnt(f)            0
 110#define PerlIO_set_cnt(f,c)             abort()
 111#endif
 112
 113#ifdef STDIO_PTR_LVALUE
 114#ifdef STDIO_PTR_LVAL_NOCHANGE_CNT
 115#define PerlIO_set_ptrcnt(f,p,c)      STMT_START {PerlSIO_set_ptr(f,p), PerlIO_set_cnt(f,c);} STMT_END
 116#else
 117#ifdef STDIO_PTR_LVAL_SETS_CNT
 118/* assert() may pre-process to ""; potential syntax error (FILE_ptr(), ) */
 119#define PerlIO_set_ptrcnt(f,p,c)      STMT_START {PerlSIO_set_ptr(f,p); assert(PerlSIO_get_cnt(f) == (c));} STMT_END
 120#define PerlIO_fast_gets(f)             1
 121#else
 122#define PerlIO_set_ptrcnt(f,p,c)        abort()
 123#endif
 124#endif
 125#endif
 126
 127#else  /* USE_STDIO_PTR */
 128
 129#define PerlIO_has_cntptr(f)            0
 130#define PerlIO_canset_cnt(f)            0
 131#define PerlIO_get_cnt(f)               (abort(),0)
 132#define PerlIO_get_ptr(f)               (abort(),(void *)0)
 133#define PerlIO_set_cnt(f,c)             abort()
 134#define PerlIO_set_ptrcnt(f,p,c)        abort()
 135
 136#endif /* USE_STDIO_PTR */
 137
 138#ifndef PerlIO_fast_gets
 139#define PerlIO_fast_gets(f)             0
 140#endif
 141
 142
 143#ifdef FILE_base
 144#define PerlIO_has_base(f)              1
 145#define PerlIO_get_base(f)              PerlSIO_get_base(f)
 146#define PerlIO_get_bufsiz(f)            PerlSIO_get_bufsiz(f)
 147#else
 148#define PerlIO_has_base(f)              0
 149#define PerlIO_get_base(f)              (abort(),(void *)0)
 150#define PerlIO_get_bufsiz(f)            (abort(),0)
 151#endif
 152
 153#endif  /* NETWARE */
 154#endif /* PERLIO_IS_STDIO */
 155