| | 1 | /* perlsdio.h |
| | 2 | * |
| | 3 | * Copyright (c) 1997-2002, Larry Wall |
| | 4 | * |
| | 5 | * You may distribute under the terms of either the GNU General Public |
| | 6 | * License or the Artistic License, as specified in the README file. |
| | 7 | * |
| | 8 | */ |
| | 9 | |
| | 10 | #ifdef PERLIO_IS_STDIO |
| | 11 | |
| | 12 | #ifdef NETWARE |
| | 13 | #include "nwstdio.h" |
| | 14 | #else |
| | 15 | |
| | 16 | /* |
| | 17 | * This file #define-s the PerlIO_xxx abstraction onto stdio functions. |
| | 18 | * Make this as close to original stdio as possible. |
| | 19 | */ |
| | 20 | #define PerlIO FILE |
| | 21 | #define PerlIO_stderr() stderr |
| | 22 | #define PerlIO_stdout() stdout |
| | 23 | #define PerlIO_stdin() stdin |
| | 24 | |
| | 25 | #define PerlIO_isutf8(f) 0 |
| | 26 | |
| | 27 | #define PerlIO_printf fprintf |
| | 28 | #define PerlIO_stdoutf printf |
| | 29 | #define PerlIO_vprintf(f,fmt,a) vfprintf(f,fmt,a) |
| | 30 | #define PerlIO_write(f,buf,count) fwrite1(buf,1,count,f) |
| | 31 | #define PerlIO_unread(f,buf,count) (-1) |
| | 32 | #define PerlIO_open fopen |
| | 33 | #define PerlIO_fdopen fdopen |
| | 34 | #define PerlIO_reopen freopen |
| | 35 | #define PerlIO_close(f) fclose(f) |
| | 36 | #define PerlIO_puts(f,s) fputs(s,f) |
| | 37 | #define PerlIO_putc(f,c) fputc(c,f) |
| | 38 | #if defined(VMS) |
| | 39 | # if defined(__DECC) |
| | 40 | /* Unusual definition of ungetc() here to accomodate fast_sv_gets()' |
| | 41 | * belief that it can mix getc/ungetc with reads from stdio buffer */ |
| | 42 | int decc$ungetc(int __c, FILE *__stream); |
| | 43 | # define PerlIO_ungetc(f,c) ((c) == EOF ? EOF : \ |
| | 44 | ((*(f) && !((*(f))->_flag & _IONBF) && \ |
| | 45 | ((*(f))->_ptr > (*(f))->_base)) ? \ |
| | 46 | ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,f))) |
| | 47 | # else |
| | 48 | # define PerlIO_ungetc(f,c) ungetc(c,f) |
| | 49 | # endif |
| | 50 | /* Work around bug in DECCRTL/AXP (DECC v5.x) and some versions of old |
| | 51 | * VAXCRTL which causes read from a pipe after EOF has been returned |
| | 52 | * once to hang. |
| | 53 | */ |
| | 54 | # define PerlIO_getc(f) \ |
| | 55 | (feof(f) ? EOF : getc(f)) |
| | 56 | # define PerlIO_read(f,buf,count) \ |
| | 57 | (feof(f) ? 0 : (SSize_t)fread(buf,1,count,f)) |
| | 58 | # define PerlIO_tell(f) ftell(f) |
| | 59 | #else |
| | 60 | # define PerlIO_getc(f) getc(f) |
| | 61 | # define PerlIO_ungetc(f,c) ungetc(c,f) |
| | 62 | # define PerlIO_read(f,buf,count) (SSize_t)fread(buf,1,count,f) |
| | 63 | # define PerlIO_tell(f) ftell(f) |
| | 64 | #endif |
| | 65 | #define PerlIO_eof(f) feof(f) |
| | 66 | #define PerlIO_getname(f,b) fgetname(f,b) |
| | 67 | #define PerlIO_error(f) ferror(f) |
| | 68 | #define PerlIO_fileno(f) fileno(f) |
| | 69 | #define PerlIO_clearerr(f) clearerr(f) |
| | 70 | #define PerlIO_flush(f) Fflush(f) |
| | 71 | #if defined(VMS) && !defined(__DECC) |
| | 72 | /* Old VAXC RTL doesn't reset EOF on seek; Perl folk seem to expect this */ |
| | 73 | #define PerlIO_seek(f,o,w) (((f) && (*f) && ((*f)->_flag &= ~_IOEOF)),fseek(f,o,w)) |
| | 74 | #else |
| | 75 | # define PerlIO_seek(f,o,w) fseek(f,o,w) |
| | 76 | #endif |
| | 77 | |
| | 78 | #define PerlIO_rewind(f) rewind(f) |
| | 79 | #define PerlIO_tmpfile() tmpfile() |
| | 80 | |
| | 81 | #define PerlIO_importFILE(f,fl) (f) |
| | 82 | #define PerlIO_exportFILE(f,fl) (f) |
| | 83 | #define PerlIO_findFILE(f) (f) |
| | 84 | #define PerlIO_releaseFILE(p,f) ((void) 0) |
| | 85 | |
| | 86 | #ifdef HAS_SETLINEBUF |
| | 87 | #define PerlIO_setlinebuf(f) setlinebuf(f); |
| | 88 | #else |
| | 89 | #define PerlIO_setlinebuf(f) setvbuf(f, Nullch, _IOLBF, 0); |
| | 90 | #endif |
| | 91 | |
| | 92 | /* Now our interface to Configure's FILE_xxx macros */ |
| | 93 | |
| | 94 | #ifdef USE_STDIO_PTR |
| | 95 | #define PerlIO_has_cntptr(f) 1 |
| | 96 | #define PerlIO_get_ptr(f) FILE_ptr(f) |
| | 97 | #define PerlIO_get_cnt(f) FILE_cnt(f) |
| | 98 | |
| | 99 | #ifdef STDIO_CNT_LVALUE |
| | 100 | #define PerlIO_canset_cnt(f) 1 |
| | 101 | #define PerlIO_set_cnt(f,c) (FILE_cnt(f) = (c)) |
| | 102 | #ifdef STDIO_PTR_LVALUE |
| | 103 | #ifdef STDIO_PTR_LVAL_NOCHANGE_CNT |
| | 104 | #define PerlIO_fast_gets(f) 1 |
| | 105 | #endif |
| | 106 | #endif /* STDIO_PTR_LVALUE */ |
| | 107 | #else /* STDIO_CNT_LVALUE */ |
| | 108 | #define PerlIO_canset_cnt(f) 0 |
| | 109 | #define PerlIO_set_cnt(f,c) abort() |
| | 110 | #endif |
| | 111 | |
| | 112 | #ifdef STDIO_PTR_LVALUE |
| | 113 | #ifdef STDIO_PTR_LVAL_NOCHANGE_CNT |
| | 114 | #define PerlIO_set_ptrcnt(f,p,c) STMT_START {FILE_ptr(f) = (p), PerlIO_set_cnt(f,c);} STMT_END |
| | 115 | #else |
| | 116 | #ifdef STDIO_PTR_LVAL_SETS_CNT |
| | 117 | /* assert() may pre-process to ""; potential syntax error (FILE_ptr(), ) */ |
| | 118 | #define PerlIO_set_ptrcnt(f,p,c) STMT_START {FILE_ptr(f) = (p); assert(FILE_cnt(f) == (c));} STMT_END |
| | 119 | #define PerlIO_fast_gets(f) 1 |
| | 120 | #else |
| | 121 | #define PerlIO_set_ptrcnt(f,p,c) abort() |
| | 122 | #endif |
| | 123 | #endif |
| | 124 | #endif |
| | 125 | |
| | 126 | #else /* USE_STDIO_PTR */ |
| | 127 | |
| | 128 | #define PerlIO_has_cntptr(f) 0 |
| | 129 | #define PerlIO_canset_cnt(f) 0 |
| | 130 | #define PerlIO_get_cnt(f) (abort(),0) |
| | 131 | #define PerlIO_get_ptr(f) (abort(),(void *)0) |
| | 132 | #define PerlIO_set_cnt(f,c) abort() |
| | 133 | #define PerlIO_set_ptrcnt(f,p,c) abort() |
| | 134 | |
| | 135 | #endif /* USE_STDIO_PTR */ |
| | 136 | |
| | 137 | #ifndef PerlIO_fast_gets |
| | 138 | #define PerlIO_fast_gets(f) 0 |
| | 139 | #endif |
| | 140 | |
| | 141 | |
| | 142 | #ifdef FILE_base |
| | 143 | #define PerlIO_has_base(f) 1 |
| | 144 | #define PerlIO_get_base(f) FILE_base(f) |
| | 145 | #define PerlIO_get_bufsiz(f) FILE_bufsiz(f) |
| | 146 | #else |
| | 147 | #define PerlIO_has_base(f) 0 |
| | 148 | #define PerlIO_get_base(f) (abort(),(void *)0) |
| | 149 | #define PerlIO_get_bufsiz(f) (abort(),0) |
| | 150 | #endif |
| | 151 | |
| | 152 | #endif /* NETWARE */ |
| | 153 | #endif /* PERLIO_IS_STDIO */ |
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