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| 76ced9ad |
1 | #ifndef _PERLIO_H |
| 2 | #define _PERLIO_H |
| 3 | /* |
| 4 | Interface for perl to IO functions. |
| 5 | There is a hierachy of Configure determined #define controls: |
| 6 | USE_STDIO - forces PerlIO_xxx() to be #define-d onto stdio functions. |
| 7 | This is used for x2p subdirectory and for conservative |
| 8 | builds - "just like perl5.00X used to be". |
| 9 | This dominates over the others. |
| 10 | |
| 11 | USE_PERLIO - The primary Configure variable that enables PerlIO. |
| 12 | If USE_PERLIO is _NOT_ set |
| 13 | then USE_STDIO above will be set to be conservative. |
| 14 | If USE_PERLIO is set |
| 15 | then there are two modes determined by USE_SFIO: |
| 16 | |
| 17 | USE_SFIO - If set causes PerlIO_xxx() to be #define-d onto sfio functions. |
| 18 | A backward compatability mode for some specialist applications. |
| 19 | |
| 20 | If USE_SFIO is not set then PerlIO_xxx() are real functions |
| 21 | defined in perlio.c which implement extra functionality |
| 22 | required for utf8 support. |
| 23 | |
| 24 | One further note - the table-of-functions scheme controlled |
| 25 | by PERL_IMPLICIT_SYS turns on USE_PERLIO so that iperlsys.h can |
| 26 | #define PerlIO_xxx() to go via the function table, without having |
| 27 | to #undef them from (say) stdio forms. |
| 28 | |
| 29 | */ |
| 30 | |
| 31 | #if defined(PERL_IMPLICIT_SYS) |
| 32 | #ifndef USE_PERLIO |
| 33 | # define USE_PERLIO |
| 34 | #endif |
| 35 | #endif |
| 36 | |
| 37 | #ifndef USE_PERLIO |
| 38 | # define USE_STDIO |
| 39 | #endif |
| 40 | |
| 41 | #ifdef USE_STDIO |
| 42 | # ifndef PERLIO_IS_STDIO |
| 43 | # define PERLIO_IS_STDIO |
| 44 | # endif |
| 45 | #endif |
| 46 | |
| 47 | /* -------------------- End of Configure controls ---------------------------- */ |
| 48 | |
| 49 | /* |
| 50 | * Although we may not want stdio to be used including <stdio.h> here |
| 51 | * avoids issues where stdio.h has strange side effects |
| 52 | */ |
| 53 | #include <stdio.h> |
| 54 | |
| 55 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FTELLO) && !defined(USE_FTELL64) |
| 56 | #define ftell ftello |
| 57 | #endif |
| 58 | |
| 59 | #if defined(USE_64_BIT_STDIO) && defined(HAS_FSEEKO) && !defined(USE_FSEEK64) |
| 60 | #define fseek fseeko |
| 61 | #endif |
| 62 | |
| 63 | #ifdef PERLIO_IS_STDIO |
| 64 | /* #define PerlIO_xxxx() as equivalent stdio function */ |
| 65 | #include "perlsdio.h" |
| 66 | #else /* PERLIO_IS_STDIO */ |
| 67 | #ifdef USE_SFIO |
| 68 | /* #define PerlIO_xxxx() as equivalent sfio function */ |
| 69 | #include "perlsfio.h" |
| 70 | #endif /* USE_SFIO */ |
| 71 | #endif /* PERLIO_IS_STDIO */ |
| 72 | |
| 73 | #ifndef PerlIO |
| 74 | /* ----------- PerlIO implementation ---------- */ |
| 75 | /* PerlIO not #define-d to something else - define the implementation */ |
| 76 | |
| 77 | typedef struct _PerlIO PerlIOl; |
| 78 | typedef struct _PerlIO_funcs PerlIO_funcs; |
| 79 | typedef PerlIOl *PerlIO; |
| 80 | #define PerlIO PerlIO |
| a1d180c4 |
81 | #define PERLIO_LAYERS 1 |
| 76ced9ad |
82 | |
| 83 | extern void PerlIO_define_layer (PerlIO_funcs *tab); |
| a1d180c4 |
84 | extern SV * PerlIO_find_layer(char *name, STRLEN len); |
| 76ced9ad |
85 | extern PerlIO * PerlIO_push (PerlIO *f,PerlIO_funcs *tab,const char *mode); |
| 86 | extern void PerlIO_pop (PerlIO *f); |
| 87 | |
| 88 | #endif /* PerlIO */ |
| 89 | |
| 90 | /* ----------- End of implementation choices ---------- */ |
| 91 | |
| 92 | #ifndef PERLIO_IS_STDIO |
| 93 | /* Not using stdio _directly_ as PerlIO */ |
| 94 | |
| 95 | /* We now need to determine what happens if source trys to use stdio. |
| 96 | * There are three cases based on PERLIO_NOT_STDIO which XS code |
| 97 | * can set how it wants. |
| 98 | */ |
| 99 | |
| 100 | #ifdef PERL_CORE |
| 101 | /* Make a choice for perl core code |
| 102 | - currently this is set to try and catch lingering raw stdio calls. |
| 103 | This is a known issue with some non UNIX ports which still use |
| 104 | "native" stdio features. |
| 105 | */ |
| 106 | #ifndef PERLIO_NOT_STDIO |
| 107 | #define PERLIO_NOT_STDIO 1 |
| 108 | #endif |
| 109 | #endif |
| 110 | |
| 111 | #ifdef PERLIO_NOT_STDIO |
| 112 | #if PERLIO_NOT_STDIO |
| 113 | /* |
| 114 | * PERLIO_NOT_STDIO #define'd as 1 |
| 115 | * Case 1: Strong denial of stdio - make all stdio calls (we can think of) errors |
| 116 | */ |
| 117 | #include "nostdio.h" |
| 118 | #else /* if PERLIO_NOT_STDIO */ |
| 119 | /* |
| 120 | * PERLIO_NOT_STDIO #define'd as 0 |
| 121 | * Case 2: Declares that both PerlIO and stdio can be used |
| 122 | */ |
| 123 | #endif /* if PERLIO_NOT_STDIO */ |
| 124 | #else /* ifdef PERLIO_NOT_STDIO */ |
| 125 | /* |
| 126 | * PERLIO_NOT_STDIO not defined |
| 127 | * Case 3: Try and fake stdio calls as PerlIO calls |
| 128 | */ |
| 129 | #include "fakesdio.h" |
| 130 | #endif /* ifndef PERLIO_NOT_STDIO */ |
| 131 | #endif /* PERLIO_IS_STDIO */ |
| 132 | |
| 133 | /* ----------- fill in things that have not got #define'd ---------- */ |
| 134 | |
| 135 | #ifndef Fpos_t |
| 136 | #define Fpos_t Off_t |
| 137 | #endif |
| 138 | |
| 139 | #ifndef EOF |
| 140 | #define EOF (-1) |
| 141 | #endif |
| 142 | |
| 143 | /* This is to catch case with no stdio */ |
| 144 | #ifndef BUFSIZ |
| 145 | #define BUFSIZ 1024 |
| 146 | #endif |
| 147 | |
| 148 | #ifndef SEEK_SET |
| 149 | #define SEEK_SET 0 |
| 150 | #endif |
| 151 | |
| 152 | #ifndef SEEK_CUR |
| 153 | #define SEEK_CUR 1 |
| 154 | #endif |
| 155 | |
| 156 | #ifndef SEEK_END |
| 157 | #define SEEK_END 2 |
| 158 | #endif |
| 159 | |
| 160 | /* --------------------- Now prototypes for functions --------------- */ |
| 161 | |
| 162 | #ifndef NEXT30_NO_ATTRIBUTE |
| 163 | #ifndef HASATTRIBUTE /* disable GNU-cc attribute checking? */ |
| 164 | #ifdef __attribute__ /* Avoid possible redefinition errors */ |
| 165 | #undef __attribute__ |
| 166 | #endif |
| 167 | #define __attribute__(attr) |
| 168 | #endif |
| 169 | #endif |
| 170 | |
| 171 | #ifndef PerlIO_init |
| 172 | extern void PerlIO_init (void); |
| 173 | #endif |
| 174 | #ifndef PerlIO_stdoutf |
| 175 | extern int PerlIO_stdoutf (const char *,...) |
| 176 | __attribute__((__format__ (__printf__, 1, 2))); |
| 177 | #endif |
| 178 | #ifndef PerlIO_puts |
| 179 | extern int PerlIO_puts (PerlIO *,const char *); |
| 180 | #endif |
| 181 | #ifndef PerlIO_open |
| 182 | extern PerlIO * PerlIO_open (const char *,const char *); |
| 183 | #endif |
| 184 | #ifndef PerlIO_close |
| 185 | extern int PerlIO_close (PerlIO *); |
| 186 | #endif |
| 187 | #ifndef PerlIO_eof |
| 188 | extern int PerlIO_eof (PerlIO *); |
| 189 | #endif |
| 190 | #ifndef PerlIO_error |
| 191 | extern int PerlIO_error (PerlIO *); |
| 192 | #endif |
| 193 | #ifndef PerlIO_clearerr |
| 194 | extern void PerlIO_clearerr (PerlIO *); |
| 195 | #endif |
| 196 | #ifndef PerlIO_getc |
| 197 | extern int PerlIO_getc (PerlIO *); |
| 198 | #endif |
| 199 | #ifndef PerlIO_putc |
| 200 | extern int PerlIO_putc (PerlIO *,int); |
| 201 | #endif |
| 202 | #ifndef PerlIO_flush |
| 203 | extern int PerlIO_flush (PerlIO *); |
| 204 | #endif |
| 205 | #ifndef PerlIO_ungetc |
| 206 | extern int PerlIO_ungetc (PerlIO *,int); |
| 207 | #endif |
| 208 | #ifndef PerlIO_fileno |
| 209 | extern int PerlIO_fileno (PerlIO *); |
| 210 | #endif |
| 211 | #ifndef PerlIO_fdopen |
| 212 | extern PerlIO * PerlIO_fdopen (int, const char *); |
| 213 | #endif |
| 214 | #ifndef PerlIO_importFILE |
| 215 | extern PerlIO * PerlIO_importFILE (FILE *,int); |
| 216 | #endif |
| 217 | #ifndef PerlIO_exportFILE |
| 218 | extern FILE * PerlIO_exportFILE (PerlIO *,int); |
| 219 | #endif |
| 220 | #ifndef PerlIO_findFILE |
| 221 | extern FILE * PerlIO_findFILE (PerlIO *); |
| 222 | #endif |
| 223 | #ifndef PerlIO_releaseFILE |
| 224 | extern void PerlIO_releaseFILE (PerlIO *,FILE *); |
| 225 | #endif |
| 226 | #ifndef PerlIO_read |
| 227 | extern SSize_t PerlIO_read (PerlIO *,void *,Size_t); |
| 228 | #endif |
| 229 | #ifndef PerlIO_write |
| 230 | extern SSize_t PerlIO_write (PerlIO *,const void *,Size_t); |
| 231 | #endif |
| 232 | #ifndef PerlIO_setlinebuf |
| 233 | extern void PerlIO_setlinebuf (PerlIO *); |
| 234 | #endif |
| 235 | #ifndef PerlIO_printf |
| 236 | extern int PerlIO_printf (PerlIO *, const char *,...) |
| 237 | __attribute__((__format__ (__printf__, 2, 3))); |
| 238 | #endif |
| 239 | #ifndef PerlIO_sprintf |
| 240 | extern int PerlIO_sprintf (char *, int, const char *,...) |
| 241 | __attribute__((__format__ (__printf__, 3, 4))); |
| 242 | #endif |
| 243 | #ifndef PerlIO_vprintf |
| 244 | extern int PerlIO_vprintf (PerlIO *, const char *, va_list); |
| 245 | #endif |
| 246 | #ifndef PerlIO_tell |
| 247 | extern Off_t PerlIO_tell (PerlIO *); |
| 248 | #endif |
| 249 | #ifndef PerlIO_seek |
| 250 | extern int PerlIO_seek (PerlIO *, Off_t, int); |
| 251 | #endif |
| 252 | #ifndef PerlIO_rewind |
| 253 | extern void PerlIO_rewind (PerlIO *); |
| 254 | #endif |
| 255 | #ifndef PerlIO_has_base |
| 256 | extern int PerlIO_has_base (PerlIO *); |
| 257 | #endif |
| 258 | #ifndef PerlIO_has_cntptr |
| 259 | extern int PerlIO_has_cntptr (PerlIO *); |
| 260 | #endif |
| 261 | #ifndef PerlIO_fast_gets |
| 262 | extern int PerlIO_fast_gets (PerlIO *); |
| 263 | #endif |
| 264 | #ifndef PerlIO_canset_cnt |
| 265 | extern int PerlIO_canset_cnt (PerlIO *); |
| 266 | #endif |
| 267 | #ifndef PerlIO_get_ptr |
| 268 | extern STDCHAR * PerlIO_get_ptr (PerlIO *); |
| 269 | #endif |
| 270 | #ifndef PerlIO_get_cnt |
| 271 | extern int PerlIO_get_cnt (PerlIO *); |
| 272 | #endif |
| 273 | #ifndef PerlIO_set_cnt |
| 274 | extern void PerlIO_set_cnt (PerlIO *,int); |
| 275 | #endif |
| 276 | #ifndef PerlIO_set_ptrcnt |
| 277 | extern void PerlIO_set_ptrcnt (PerlIO *,STDCHAR *,int); |
| 278 | #endif |
| 279 | #ifndef PerlIO_get_base |
| 280 | extern STDCHAR * PerlIO_get_base (PerlIO *); |
| 281 | #endif |
| 282 | #ifndef PerlIO_get_bufsiz |
| 283 | extern int PerlIO_get_bufsiz (PerlIO *); |
| 284 | #endif |
| 285 | #ifndef PerlIO_tmpfile |
| 286 | extern PerlIO * PerlIO_tmpfile (void); |
| 287 | #endif |
| 288 | #ifndef PerlIO_stdin |
| 289 | extern PerlIO * PerlIO_stdin (void); |
| 290 | #endif |
| 291 | #ifndef PerlIO_stdout |
| 292 | extern PerlIO * PerlIO_stdout (void); |
| 293 | #endif |
| 294 | #ifndef PerlIO_stderr |
| 295 | extern PerlIO * PerlIO_stderr (void); |
| 296 | #endif |
| 297 | #ifndef PerlIO_getpos |
| 298 | extern int PerlIO_getpos (PerlIO *,Fpos_t *); |
| 299 | #endif |
| 300 | #ifndef PerlIO_setpos |
| 301 | extern int PerlIO_setpos (PerlIO *,const Fpos_t *); |
| 302 | #endif |
| 303 | #ifndef PerlIO_fdupopen |
| 304 | extern PerlIO * PerlIO_fdupopen (PerlIO *); |
| 305 | #endif |
| 306 | #ifndef PerlIO_isutf8 |
| 307 | extern int PerlIO_isutf8 (PerlIO *); |
| 308 | #endif |
| 309 | |
| 310 | #endif /* _PERLIO_H */ |
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