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1 | /* perlio.c |
2 | * |
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3 | * Copyright (c) 1996-1999, Nick Ing-Simmons |
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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 | #define VOIDUSED 1 |
11 | #include "config.h" |
12 | |
13 | #define PERLIO_NOT_STDIO 0 |
14 | #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) |
15 | #define PerlIO FILE |
16 | #endif |
17 | /* |
18 | * This file provides those parts of PerlIO abstraction |
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19 | * which are not #defined in iperlsys.h. |
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20 | * Which these are depends on various Configure #ifdef's |
21 | */ |
22 | |
23 | #include "EXTERN.h" |
24 | #include "perl.h" |
25 | |
26 | #ifdef PERLIO_IS_STDIO |
27 | |
28 | void |
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29 | PerlIO_init(void) |
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30 | { |
31 | /* Does nothing (yet) except force this file to be included |
32 | in perl binary. That allows this file to force inclusion |
33 | of other functions that may be required by loadable |
34 | extensions e.g. for FileHandle::tmpfile |
35 | */ |
36 | } |
37 | |
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38 | #undef PerlIO_tmpfile |
39 | PerlIO * |
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40 | PerlIO_tmpfile(void) |
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41 | { |
42 | return tmpfile(); |
43 | } |
44 | |
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45 | #else /* PERLIO_IS_STDIO */ |
46 | |
47 | #ifdef USE_SFIO |
48 | |
49 | #undef HAS_FSETPOS |
50 | #undef HAS_FGETPOS |
51 | |
52 | /* This section is just to make sure these functions |
53 | get pulled in from libsfio.a |
54 | */ |
55 | |
56 | #undef PerlIO_tmpfile |
57 | PerlIO * |
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58 | PerlIO_tmpfile(void) |
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59 | { |
60 | return sftmp(0); |
61 | } |
62 | |
63 | void |
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64 | PerlIO_init(void) |
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65 | { |
66 | /* Force this file to be included in perl binary. Which allows |
67 | * this file to force inclusion of other functions that may be |
68 | * required by loadable extensions e.g. for FileHandle::tmpfile |
69 | */ |
70 | |
71 | /* Hack |
72 | * sfio does its own 'autoflush' on stdout in common cases. |
73 | * Flush results in a lot of lseek()s to regular files and |
74 | * lot of small writes to pipes. |
75 | */ |
76 | sfset(sfstdout,SF_SHARE,0); |
77 | } |
78 | |
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79 | #else /* USE_SFIO */ |
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80 | |
81 | /* Implement all the PerlIO interface using stdio. |
82 | - this should be only file to include <stdio.h> |
83 | */ |
84 | |
85 | #undef PerlIO_stderr |
86 | PerlIO * |
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87 | PerlIO_stderr(void) |
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88 | { |
89 | return (PerlIO *) stderr; |
90 | } |
91 | |
92 | #undef PerlIO_stdin |
93 | PerlIO * |
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94 | PerlIO_stdin(void) |
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95 | { |
96 | return (PerlIO *) stdin; |
97 | } |
98 | |
99 | #undef PerlIO_stdout |
100 | PerlIO * |
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101 | PerlIO_stdout(void) |
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102 | { |
103 | return (PerlIO *) stdout; |
104 | } |
105 | |
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106 | #undef PerlIO_fast_gets |
107 | int |
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108 | PerlIO_fast_gets(PerlIO *f) |
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109 | { |
110 | #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE) |
111 | return 1; |
112 | #else |
113 | return 0; |
114 | #endif |
115 | } |
116 | |
117 | #undef PerlIO_has_cntptr |
118 | int |
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119 | PerlIO_has_cntptr(PerlIO *f) |
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120 | { |
121 | #if defined(USE_STDIO_PTR) |
122 | return 1; |
123 | #else |
124 | return 0; |
125 | #endif |
126 | } |
127 | |
128 | #undef PerlIO_canset_cnt |
129 | int |
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130 | PerlIO_canset_cnt(PerlIO *f) |
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131 | { |
132 | #if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE) |
133 | return 1; |
134 | #else |
135 | return 0; |
136 | #endif |
137 | } |
138 | |
139 | #undef PerlIO_set_cnt |
140 | void |
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141 | PerlIO_set_cnt(PerlIO *f, int cnt) |
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142 | { |
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143 | if (cnt < -1) |
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144 | warn("Setting cnt to %d\n",cnt); |
145 | #if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE) |
146 | FILE_cnt(f) = cnt; |
147 | #else |
148 | croak("Cannot set 'cnt' of FILE * on this system"); |
149 | #endif |
150 | } |
151 | |
152 | #undef PerlIO_set_ptrcnt |
153 | void |
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154 | PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) |
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155 | { |
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156 | #ifdef FILE_bufsiz |
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157 | STDCHAR *e = FILE_base(f) + FILE_bufsiz(f); |
158 | int ec = e - ptr; |
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159 | if (ptr > e + 1) |
160 | warn("Setting ptr %p > end+1 %p\n", ptr, e + 1); |
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161 | if (cnt != ec) |
162 | warn("Setting cnt to %d, ptr implies %d\n",cnt,ec); |
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163 | #endif |
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164 | #if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) |
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165 | FILE_ptr(f) = ptr; |
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166 | #else |
167 | croak("Cannot set 'ptr' of FILE * on this system"); |
168 | #endif |
169 | #if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE) |
170 | FILE_cnt(f) = cnt; |
171 | #else |
172 | croak("Cannot set 'cnt' of FILE * on this system"); |
173 | #endif |
174 | } |
175 | |
176 | #undef PerlIO_get_cnt |
177 | int |
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178 | PerlIO_get_cnt(PerlIO *f) |
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179 | { |
180 | #ifdef FILE_cnt |
181 | return FILE_cnt(f); |
182 | #else |
183 | croak("Cannot get 'cnt' of FILE * on this system"); |
184 | return -1; |
185 | #endif |
186 | } |
187 | |
188 | #undef PerlIO_get_bufsiz |
189 | int |
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190 | PerlIO_get_bufsiz(PerlIO *f) |
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191 | { |
192 | #ifdef FILE_bufsiz |
193 | return FILE_bufsiz(f); |
194 | #else |
195 | croak("Cannot get 'bufsiz' of FILE * on this system"); |
196 | return -1; |
197 | #endif |
198 | } |
199 | |
200 | #undef PerlIO_get_ptr |
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201 | STDCHAR * |
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202 | PerlIO_get_ptr(PerlIO *f) |
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203 | { |
204 | #ifdef FILE_ptr |
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205 | return FILE_ptr(f); |
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206 | #else |
207 | croak("Cannot get 'ptr' of FILE * on this system"); |
208 | return NULL; |
209 | #endif |
210 | } |
211 | |
212 | #undef PerlIO_get_base |
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213 | STDCHAR * |
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214 | PerlIO_get_base(PerlIO *f) |
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215 | { |
216 | #ifdef FILE_base |
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217 | return FILE_base(f); |
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218 | #else |
219 | croak("Cannot get 'base' of FILE * on this system"); |
220 | return NULL; |
221 | #endif |
222 | } |
223 | |
224 | #undef PerlIO_has_base |
225 | int |
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226 | PerlIO_has_base(PerlIO *f) |
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227 | { |
228 | #ifdef FILE_base |
229 | return 1; |
230 | #else |
231 | return 0; |
232 | #endif |
233 | } |
234 | |
235 | #undef PerlIO_puts |
236 | int |
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237 | PerlIO_puts(PerlIO *f, const char *s) |
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238 | { |
239 | return fputs(s,f); |
240 | } |
241 | |
242 | #undef PerlIO_open |
243 | PerlIO * |
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244 | PerlIO_open(const char *path, const char *mode) |
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245 | { |
246 | return fopen(path,mode); |
247 | } |
248 | |
249 | #undef PerlIO_fdopen |
250 | PerlIO * |
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251 | PerlIO_fdopen(int fd, const char *mode) |
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252 | { |
253 | return fdopen(fd,mode); |
254 | } |
255 | |
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256 | #undef PerlIO_reopen |
257 | PerlIO * |
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258 | PerlIO_reopen(const char *name, const char *mode, PerlIO *f) |
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259 | { |
260 | return freopen(name,mode,f); |
261 | } |
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262 | |
263 | #undef PerlIO_close |
264 | int |
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265 | PerlIO_close(PerlIO *f) |
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266 | { |
267 | return fclose(f); |
268 | } |
269 | |
270 | #undef PerlIO_eof |
271 | int |
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272 | PerlIO_eof(PerlIO *f) |
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273 | { |
274 | return feof(f); |
275 | } |
276 | |
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277 | #undef PerlIO_getname |
278 | char * |
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279 | PerlIO_getname(PerlIO *f, char *buf) |
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280 | { |
281 | #ifdef VMS |
282 | return fgetname(f,buf); |
283 | #else |
284 | croak("Don't know how to get file name"); |
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285 | return NULL; |
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286 | #endif |
287 | } |
288 | |
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289 | #undef PerlIO_getc |
290 | int |
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291 | PerlIO_getc(PerlIO *f) |
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292 | { |
293 | return fgetc(f); |
294 | } |
295 | |
296 | #undef PerlIO_error |
297 | int |
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298 | PerlIO_error(PerlIO *f) |
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299 | { |
300 | return ferror(f); |
301 | } |
302 | |
303 | #undef PerlIO_clearerr |
304 | void |
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305 | PerlIO_clearerr(PerlIO *f) |
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306 | { |
307 | clearerr(f); |
308 | } |
309 | |
310 | #undef PerlIO_flush |
311 | int |
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312 | PerlIO_flush(PerlIO *f) |
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313 | { |
314 | return Fflush(f); |
315 | } |
316 | |
317 | #undef PerlIO_fileno |
318 | int |
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319 | PerlIO_fileno(PerlIO *f) |
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320 | { |
321 | return fileno(f); |
322 | } |
323 | |
324 | #undef PerlIO_setlinebuf |
325 | void |
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326 | PerlIO_setlinebuf(PerlIO *f) |
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327 | { |
328 | #ifdef HAS_SETLINEBUF |
329 | setlinebuf(f); |
330 | #else |
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331 | # ifdef __BORLANDC__ /* Borland doesn't like NULL size for _IOLBF */ |
332 | setvbuf(f, Nullch, _IOLBF, BUFSIZ); |
333 | # else |
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334 | setvbuf(f, Nullch, _IOLBF, 0); |
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335 | # endif |
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336 | #endif |
337 | } |
338 | |
339 | #undef PerlIO_putc |
340 | int |
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341 | PerlIO_putc(PerlIO *f, int ch) |
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342 | { |
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343 | return putc(ch,f); |
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344 | } |
345 | |
346 | #undef PerlIO_ungetc |
347 | int |
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348 | PerlIO_ungetc(PerlIO *f, int ch) |
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349 | { |
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350 | return ungetc(ch,f); |
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351 | } |
352 | |
353 | #undef PerlIO_read |
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354 | SSize_t |
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355 | PerlIO_read(PerlIO *f, void *buf, Size_t count) |
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356 | { |
357 | return fread(buf,1,count,f); |
358 | } |
359 | |
360 | #undef PerlIO_write |
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361 | SSize_t |
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362 | PerlIO_write(PerlIO *f, const void *buf, Size_t count) |
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363 | { |
364 | return fwrite1(buf,1,count,f); |
365 | } |
366 | |
367 | #undef PerlIO_vprintf |
368 | int |
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369 | PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) |
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370 | { |
371 | return vfprintf(f,fmt,ap); |
372 | } |
373 | |
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374 | #undef PerlIO_tell |
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375 | Off_t |
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376 | PerlIO_tell(PerlIO *f) |
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377 | { |
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378 | #ifdef HAS_FTELLO |
379 | return ftello(f); |
380 | #else |
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381 | return ftell(f); |
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382 | #endif |
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383 | } |
384 | |
385 | #undef PerlIO_seek |
386 | int |
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387 | PerlIO_seek(PerlIO *f, Off_t offset, int whence) |
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388 | { |
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389 | #ifdef HAS_FSEEKO |
390 | return fseeko(f,offset,whence); |
391 | #else |
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392 | return fseek(f,offset,whence); |
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393 | #endif |
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394 | } |
395 | |
396 | #undef PerlIO_rewind |
397 | void |
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398 | PerlIO_rewind(PerlIO *f) |
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399 | { |
400 | rewind(f); |
401 | } |
402 | |
403 | #undef PerlIO_printf |
404 | int |
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405 | PerlIO_printf(PerlIO *f,const char *fmt,...) |
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406 | { |
407 | va_list ap; |
408 | int result; |
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409 | va_start(ap,fmt); |
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410 | result = vfprintf(f,fmt,ap); |
411 | va_end(ap); |
412 | return result; |
413 | } |
414 | |
415 | #undef PerlIO_stdoutf |
416 | int |
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417 | PerlIO_stdoutf(const char *fmt,...) |
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418 | { |
419 | va_list ap; |
420 | int result; |
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421 | va_start(ap,fmt); |
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422 | result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); |
423 | va_end(ap); |
424 | return result; |
425 | } |
426 | |
427 | #undef PerlIO_tmpfile |
428 | PerlIO * |
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429 | PerlIO_tmpfile(void) |
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430 | { |
431 | return tmpfile(); |
432 | } |
433 | |
434 | #undef PerlIO_importFILE |
435 | PerlIO * |
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436 | PerlIO_importFILE(FILE *f, int fl) |
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437 | { |
438 | return f; |
439 | } |
440 | |
441 | #undef PerlIO_exportFILE |
442 | FILE * |
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443 | PerlIO_exportFILE(PerlIO *f, int fl) |
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444 | { |
445 | return f; |
446 | } |
447 | |
448 | #undef PerlIO_findFILE |
449 | FILE * |
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450 | PerlIO_findFILE(PerlIO *f) |
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451 | { |
452 | return f; |
453 | } |
454 | |
455 | #undef PerlIO_releaseFILE |
456 | void |
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457 | PerlIO_releaseFILE(PerlIO *p, FILE *f) |
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458 | { |
459 | } |
460 | |
461 | void |
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462 | PerlIO_init(void) |
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463 | { |
464 | /* Does nothing (yet) except force this file to be included |
465 | in perl binary. That allows this file to force inclusion |
466 | of other functions that may be required by loadable |
467 | extensions e.g. for FileHandle::tmpfile |
468 | */ |
469 | } |
470 | |
471 | #endif /* USE_SFIO */ |
472 | #endif /* PERLIO_IS_STDIO */ |
473 | |
474 | #ifndef HAS_FSETPOS |
475 | #undef PerlIO_setpos |
476 | int |
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477 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
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478 | { |
479 | return PerlIO_seek(f,*pos,0); |
480 | } |
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481 | #else |
482 | #ifndef PERLIO_IS_STDIO |
483 | #undef PerlIO_setpos |
484 | int |
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485 | PerlIO_setpos(PerlIO *f, const Fpos_t *pos) |
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486 | { |
487 | return fsetpos(f, pos); |
488 | } |
489 | #endif |
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490 | #endif |
491 | |
492 | #ifndef HAS_FGETPOS |
493 | #undef PerlIO_getpos |
494 | int |
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495 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
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496 | { |
497 | *pos = PerlIO_tell(f); |
498 | return 0; |
499 | } |
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500 | #else |
501 | #ifndef PERLIO_IS_STDIO |
502 | #undef PerlIO_getpos |
503 | int |
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504 | PerlIO_getpos(PerlIO *f, Fpos_t *pos) |
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505 | { |
506 | return fgetpos(f, pos); |
507 | } |
508 | #endif |
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509 | #endif |
510 | |
511 | #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) |
512 | |
513 | int |
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514 | vprintf(char *pat, char *args) |
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515 | { |
516 | _doprnt(pat, args, stdout); |
517 | return 0; /* wrong, but perl doesn't use the return value */ |
518 | } |
519 | |
520 | int |
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521 | vfprintf(FILE *fd, char *pat, char *args) |
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522 | { |
523 | _doprnt(pat, args, fd); |
524 | return 0; /* wrong, but perl doesn't use the return value */ |
525 | } |
526 | |
527 | #endif |
528 | |
529 | #ifndef PerlIO_vsprintf |
530 | int |
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531 | PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) |
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532 | { |
533 | int val = vsprintf(s, fmt, ap); |
534 | if (n >= 0) |
535 | { |
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536 | if (strlen(s) >= (STRLEN)n) |
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537 | { |
538 | PerlIO_puts(PerlIO_stderr(),"panic: sprintf overflow - memory corrupted!\n"); |
539 | my_exit(1); |
540 | } |
541 | } |
542 | return val; |
543 | } |
544 | #endif |
545 | |
546 | #ifndef PerlIO_sprintf |
547 | int |
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548 | PerlIO_sprintf(char *s, int n, const char *fmt,...) |
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549 | { |
550 | va_list ap; |
551 | int result; |
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552 | va_start(ap,fmt); |
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553 | result = PerlIO_vsprintf(s, n, fmt, ap); |
554 | va_end(ap); |
555 | return result; |
556 | } |
557 | #endif |
558 | |