Commit | Line | Data |
e7a1fdd7 |
1 | #define PERL_NO_GET_CONTEXT |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
5 | #ifdef PERLIO_LAYERS |
6 | |
7 | #include "perliol.h" |
8 | |
9 | typedef struct |
10 | { |
11 | struct _PerlIO base; /* Base "class" info */ |
12 | HV * stash; |
13 | SV * obj; |
14 | SV * var; |
15 | SSize_t cnt; |
e7a1fdd7 |
16 | IO * io; |
17 | SV * fh; |
18 | CV *PUSHED; |
19 | CV *POPPED; |
20 | CV *OPEN; |
21 | CV *FDOPEN; |
22 | CV *SYSOPEN; |
23 | CV *GETARG; |
24 | CV *FILENO; |
25 | CV *READ; |
26 | CV *WRITE; |
27 | CV *FILL; |
28 | CV *CLOSE; |
29 | CV *SEEK; |
30 | CV *TELL; |
31 | CV *UNREAD; |
32 | CV *FLUSH; |
33 | CV *SETLINEBUF; |
34 | CV *CLEARERR; |
c7997937 |
35 | CV *mERROR; |
e7a1fdd7 |
36 | CV *mEOF; |
37 | } PerlIOVia; |
38 | |
39 | #define MYMethod(x) #x,&s->x |
40 | |
41 | CV * |
42 | PerlIOVia_fetchmethod(pTHX_ PerlIOVia *s,char *method,CV **save) |
43 | { |
44 | GV *gv = gv_fetchmeth(s->stash,method,strlen(method),0); |
45 | #if 0 |
46 | Perl_warn(aTHX_ "Lookup %s::%s => %p",HvNAME(s->stash),method,gv); |
47 | #endif |
48 | if (gv) |
49 | { |
50 | return *save = GvCV(gv); |
51 | } |
52 | else |
53 | { |
54 | return *save = (CV *) -1; |
55 | } |
e7a1fdd7 |
56 | } |
57 | |
58 | SV * |
59 | PerlIOVia_method(pTHX_ PerlIO *f,char *method,CV **save,int flags,...) |
60 | { |
61 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
62 | CV *cv = (*save) ? *save : PerlIOVia_fetchmethod(aTHX_ s,method,save); |
63 | SV *result = Nullsv; |
64 | va_list ap; |
65 | va_start(ap,flags); |
66 | if (cv != (CV *)-1) |
67 | { |
68 | IV count; |
69 | dSP; |
70 | SV *arg; |
e7a1fdd7 |
71 | ENTER; |
72 | PUSHMARK(sp); |
73 | XPUSHs(s->obj); |
74 | while ((arg = va_arg(ap,SV *))) |
75 | { |
76 | XPUSHs(arg); |
77 | } |
78 | if (*PerlIONext(f)) |
79 | { |
80 | if (!s->fh) |
81 | { |
82 | GV *gv = newGVgen(HvNAME(s->stash)); |
83 | GvIOp(gv) = newIO(); |
84 | s->fh = newRV_noinc((SV *)gv); |
85 | s->io = GvIOp(gv); |
86 | } |
87 | IoIFP(s->io) = PerlIONext(f); |
88 | IoOFP(s->io) = PerlIONext(f); |
89 | XPUSHs(s->fh); |
90 | } |
91 | PUTBACK; |
92 | count = call_sv((SV *)cv,flags); |
93 | if (count) |
94 | { |
95 | SPAGAIN; |
96 | result = POPs; |
97 | PUTBACK; |
98 | } |
99 | else |
100 | { |
101 | result = &PL_sv_undef; |
102 | } |
103 | LEAVE; |
104 | } |
105 | va_end(ap); |
106 | return result; |
107 | } |
108 | |
109 | IV |
f62ce20a |
110 | PerlIOVia_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) |
e7a1fdd7 |
111 | { |
f62ce20a |
112 | IV code = PerlIOBase_pushed(aTHX_ f,mode,Nullsv); |
e7a1fdd7 |
113 | if (code == 0) |
114 | { |
e7a1fdd7 |
115 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
116 | if (!arg) |
117 | { |
99ef548b |
118 | if (ckWARN(WARN_LAYER)) |
119 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "No package specified"); |
e7a1fdd7 |
120 | code = -1; |
121 | } |
122 | else |
123 | { |
124 | STRLEN pkglen = 0; |
125 | char *pkg = SvPV(arg,pkglen); |
267cbce7 |
126 | s->obj = SvREFCNT_inc(arg); |
e7a1fdd7 |
127 | s->stash = gv_stashpvn(pkg, pkglen, FALSE); |
128 | if (s->stash) |
129 | { |
130 | SV *modesv = (mode) ? sv_2mortal(newSVpvn(mode,strlen(mode))) : Nullsv; |
131 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(PUSHED),G_SCALAR,modesv,Nullsv); |
132 | if (result) |
133 | { |
134 | if (sv_isobject(result)) |
267cbce7 |
135 | { |
136 | s->obj = SvREFCNT_inc(result); |
137 | SvREFCNT_dec(arg); |
138 | } |
e7a1fdd7 |
139 | else if (SvIV(result) != 0) |
140 | return SvIV(result); |
141 | } |
142 | if (PerlIOVia_fetchmethod(aTHX_ s,MYMethod(FILL)) == (CV *) -1) |
143 | PerlIOBase(f)->flags &= ~PERLIO_F_FASTGETS; |
144 | else |
145 | PerlIOBase(f)->flags |= PERLIO_F_FASTGETS; |
146 | } |
147 | else |
148 | { |
99ef548b |
149 | if (ckWARN(WARN_LAYER)) |
150 | Perl_warner(aTHX_ packWARN(WARN_LAYER), "Cannot find package '%.*s'",(int) pkglen,pkg); |
267cbce7 |
151 | #ifdef ENOSYS |
152 | errno = ENOSYS; |
153 | #else |
154 | #ifdef ENOENT |
155 | errno = ENOENT; |
156 | #endif |
157 | #endif |
e7a1fdd7 |
158 | code = -1; |
159 | } |
160 | } |
161 | } |
162 | return code; |
163 | } |
164 | |
165 | PerlIO * |
fcf2db38 |
166 | PerlIOVia_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, IV n, const char *mode, int fd, int imode, int perm, PerlIO *f, int narg, SV **args) |
e7a1fdd7 |
167 | { |
168 | if (!f) |
169 | { |
170 | f = PerlIO_push(aTHX_ PerlIO_allocate(aTHX),self,mode,PerlIOArg); |
171 | } |
172 | else |
173 | { |
174 | if (!PerlIO_push(aTHX_ f,self,mode,PerlIOArg)) |
175 | return NULL; |
176 | } |
177 | if (f) |
178 | { |
179 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
180 | SV *result = Nullsv; |
181 | if (fd >= 0) |
182 | { |
183 | SV *fdsv = sv_2mortal(newSViv(fd)); |
184 | result = PerlIOVia_method(aTHX_ f,MYMethod(FDOPEN),G_SCALAR,fdsv,Nullsv); |
185 | } |
186 | else if (narg > 0) |
187 | { |
188 | if (*mode == '#') |
189 | { |
190 | SV *imodesv = sv_2mortal(newSViv(imode)); |
191 | SV *permsv = sv_2mortal(newSViv(perm)); |
192 | result = PerlIOVia_method(aTHX_ f,MYMethod(SYSOPEN),G_SCALAR,*args,imodesv,permsv,Nullsv); |
193 | } |
194 | else |
195 | { |
196 | result = PerlIOVia_method(aTHX_ f,MYMethod(OPEN),G_SCALAR,*args,Nullsv); |
197 | } |
198 | } |
199 | if (result) |
200 | { |
201 | if (sv_isobject(result)) |
202 | s->obj = SvREFCNT_inc(result); |
203 | else if (!SvTRUE(result)) |
204 | { |
205 | return NULL; |
206 | } |
207 | } |
208 | else |
209 | return NULL; |
210 | } |
211 | return f; |
212 | } |
213 | |
214 | IV |
f62ce20a |
215 | PerlIOVia_popped(pTHX_ PerlIO *f) |
e7a1fdd7 |
216 | { |
e7a1fdd7 |
217 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
218 | PerlIOVia_method(aTHX_ f,MYMethod(POPPED),G_VOID,Nullsv); |
219 | if (s->var) |
220 | { |
221 | SvREFCNT_dec(s->var); |
222 | s->var = Nullsv; |
223 | } |
224 | |
225 | if (s->io) |
226 | { |
227 | IoIFP(s->io) = NULL; |
228 | IoOFP(s->io) = NULL; |
229 | } |
230 | if (s->fh) |
231 | { |
232 | SvREFCNT_dec(s->fh); |
233 | s->fh = Nullsv; |
234 | s->io = NULL; |
235 | } |
236 | if (s->obj) |
237 | { |
238 | SvREFCNT_dec(s->obj); |
239 | s->obj = Nullsv; |
240 | } |
241 | return 0; |
242 | } |
243 | |
244 | IV |
f62ce20a |
245 | PerlIOVia_close(pTHX_ PerlIO *f) |
e7a1fdd7 |
246 | { |
e7a1fdd7 |
247 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
f62ce20a |
248 | IV code = PerlIOBase_close(aTHX_ f); |
e7a1fdd7 |
249 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(CLOSE),G_SCALAR,Nullsv); |
250 | if (result && SvIV(result) != 0) |
251 | code = SvIV(result); |
252 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
253 | return code; |
254 | } |
255 | |
256 | IV |
f62ce20a |
257 | PerlIOVia_fileno(pTHX_ PerlIO *f) |
e7a1fdd7 |
258 | { |
e7a1fdd7 |
259 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
260 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FILENO),G_SCALAR,Nullsv); |
261 | return (result) ? SvIV(result) : PerlIO_fileno(PerlIONext(f)); |
262 | } |
263 | |
264 | IV |
f62ce20a |
265 | PerlIOVia_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
e7a1fdd7 |
266 | { |
e7a1fdd7 |
267 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
268 | SV *offsv = sv_2mortal(newSViv(offset)); |
9f16d962 |
269 | SV *whsv = sv_2mortal(newSViv(whence)); |
e7a1fdd7 |
270 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(SEEK),G_SCALAR,offsv,whsv,Nullsv); |
271 | return (result) ? SvIV(result) : -1; |
272 | } |
273 | |
274 | Off_t |
f62ce20a |
275 | PerlIOVia_tell(pTHX_ PerlIO *f) |
e7a1fdd7 |
276 | { |
e7a1fdd7 |
277 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
278 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(TELL),G_SCALAR,Nullsv); |
9f16d962 |
279 | return (result) ? (Off_t) SvIV(result) : (Off_t) -1; |
e7a1fdd7 |
280 | } |
281 | |
282 | SSize_t |
f62ce20a |
283 | PerlIOVia_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
e7a1fdd7 |
284 | { |
e7a1fdd7 |
285 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
286 | SV *buf = sv_2mortal(newSVpvn((char *)vbuf,count)); |
287 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(UNREAD),G_SCALAR,buf,Nullsv); |
288 | if (result) |
289 | return (SSize_t) SvIV(result); |
290 | else |
291 | { |
f62ce20a |
292 | return PerlIOBase_unread(aTHX_ f,vbuf,count); |
e7a1fdd7 |
293 | } |
294 | } |
295 | |
296 | SSize_t |
f62ce20a |
297 | PerlIOVia_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
e7a1fdd7 |
298 | { |
299 | SSize_t rd = 0; |
300 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
301 | { |
302 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) |
303 | { |
f62ce20a |
304 | rd = PerlIOBase_read(aTHX_ f,vbuf,count); |
e7a1fdd7 |
305 | } |
306 | else |
307 | { |
e7a1fdd7 |
308 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
309 | SV *buf = sv_2mortal(newSV(count)); |
310 | SV *n = sv_2mortal(newSViv(count)); |
311 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(READ),G_SCALAR,buf,n,Nullsv); |
312 | if (result) |
313 | { |
314 | rd = (SSize_t) SvIV(result); |
315 | Move(SvPVX(buf),vbuf,rd,char); |
316 | return rd; |
317 | } |
318 | } |
319 | } |
320 | return rd; |
321 | } |
322 | |
323 | SSize_t |
f62ce20a |
324 | PerlIOVia_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
e7a1fdd7 |
325 | { |
326 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
327 | { |
e7a1fdd7 |
328 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
329 | SV *buf = newSVpvn((char *)vbuf,count); |
330 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(WRITE),G_SCALAR,buf,Nullsv); |
331 | SvREFCNT_dec(buf); |
332 | if (result) |
333 | return (SSize_t) SvIV(result); |
334 | return -1; |
335 | } |
336 | return 0; |
337 | } |
338 | |
339 | IV |
f62ce20a |
340 | PerlIOVia_fill(pTHX_ PerlIO *f) |
e7a1fdd7 |
341 | { |
342 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
343 | { |
e7a1fdd7 |
344 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
345 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FILL),G_SCALAR,Nullsv); |
346 | if (s->var) |
347 | { |
348 | SvREFCNT_dec(s->var); |
349 | s->var = Nullsv; |
350 | } |
351 | if (result && SvOK(result)) |
352 | { |
353 | STRLEN len = 0; |
354 | char *p = SvPV(result,len); |
355 | s->var = newSVpvn(p,len); |
356 | s->cnt = SvCUR(s->var); |
357 | return 0; |
358 | } |
359 | else |
360 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
361 | } |
362 | return -1; |
363 | } |
364 | |
365 | IV |
f62ce20a |
366 | PerlIOVia_flush(pTHX_ PerlIO *f) |
e7a1fdd7 |
367 | { |
e7a1fdd7 |
368 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
369 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FLUSH),G_SCALAR,Nullsv); |
370 | if (s->var && s->cnt > 0) |
371 | { |
372 | SvREFCNT_dec(s->var); |
373 | s->var = Nullsv; |
374 | } |
375 | return (result) ? SvIV(result) : 0; |
376 | } |
377 | |
378 | STDCHAR * |
f62ce20a |
379 | PerlIOVia_get_base(pTHX_ PerlIO *f) |
e7a1fdd7 |
380 | { |
381 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
382 | { |
e7a1fdd7 |
383 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
384 | if (s->var) |
385 | { |
386 | return (STDCHAR *)SvPVX(s->var); |
387 | } |
388 | } |
389 | return (STDCHAR *) Nullch; |
390 | } |
391 | |
392 | STDCHAR * |
f62ce20a |
393 | PerlIOVia_get_ptr(pTHX_ PerlIO *f) |
e7a1fdd7 |
394 | { |
395 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
396 | { |
397 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
398 | if (s->var) |
399 | { |
e7a1fdd7 |
400 | STDCHAR *p = (STDCHAR *)(SvEND(s->var) - s->cnt); |
401 | return p; |
402 | } |
403 | } |
404 | return (STDCHAR *) Nullch; |
405 | } |
406 | |
407 | SSize_t |
f62ce20a |
408 | PerlIOVia_get_cnt(pTHX_ PerlIO *f) |
e7a1fdd7 |
409 | { |
410 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
411 | { |
412 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
413 | if (s->var) |
414 | { |
415 | return s->cnt; |
416 | } |
417 | } |
418 | return 0; |
419 | } |
420 | |
421 | Size_t |
f62ce20a |
422 | PerlIOVia_bufsiz(pTHX_ PerlIO *f) |
e7a1fdd7 |
423 | { |
424 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
425 | { |
426 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
427 | if (s->var) |
428 | return SvCUR(s->var); |
429 | } |
430 | return 0; |
431 | } |
432 | |
433 | void |
f62ce20a |
434 | PerlIOVia_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
e7a1fdd7 |
435 | { |
436 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
437 | s->cnt = cnt; |
438 | } |
439 | |
440 | void |
f62ce20a |
441 | PerlIOVia_setlinebuf(pTHX_ PerlIO *f) |
e7a1fdd7 |
442 | { |
e7a1fdd7 |
443 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
444 | PerlIOVia_method(aTHX_ f,MYMethod(SETLINEBUF),G_VOID,Nullsv); |
f62ce20a |
445 | PerlIOBase_setlinebuf(aTHX_ f); |
e7a1fdd7 |
446 | } |
447 | |
448 | void |
f62ce20a |
449 | PerlIOVia_clearerr(pTHX_ PerlIO *f) |
e7a1fdd7 |
450 | { |
e7a1fdd7 |
451 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
452 | PerlIOVia_method(aTHX_ f,MYMethod(CLEARERR),G_VOID,Nullsv); |
f62ce20a |
453 | PerlIOBase_clearerr(aTHX_ f); |
e7a1fdd7 |
454 | } |
455 | |
c7997937 |
456 | IV |
f62ce20a |
457 | PerlIOVia_error(pTHX_ PerlIO *f) |
e7a1fdd7 |
458 | { |
e7a1fdd7 |
459 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
c7997937 |
460 | SV *result = PerlIOVia_method(aTHX_ f,"ERROR",&s->mERROR,G_SCALAR,Nullsv); |
f62ce20a |
461 | return (result) ? SvIV(result) : PerlIOBase_error(aTHX_ f); |
e7a1fdd7 |
462 | } |
463 | |
464 | IV |
f62ce20a |
465 | PerlIOVia_eof(pTHX_ PerlIO *f) |
e7a1fdd7 |
466 | { |
e7a1fdd7 |
467 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
468 | SV *result = PerlIOVia_method(aTHX_ f,"EOF",&s->mEOF,G_SCALAR,Nullsv); |
f62ce20a |
469 | return (result) ? SvIV(result) : PerlIOBase_eof(aTHX_ f); |
e7a1fdd7 |
470 | } |
471 | |
ecdeb87c |
472 | SV * |
473 | PerlIOVia_getarg(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
474 | { |
475 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
476 | return PerlIOVia_method(aTHX_ f,MYMethod(GETARG),G_SCALAR,Nullsv); |
477 | } |
478 | |
8cf8f3d1 |
479 | PerlIO * |
ecdeb87c |
480 | PerlIOVia_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
8cf8f3d1 |
481 | { |
ecdeb87c |
482 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) |
9f16d962 |
483 | { |
ecdeb87c |
484 | /* Most of the fields will lazily set themselves up as needed |
9f16d962 |
485 | stash and obj have been set up by the implied push |
486 | */ |
487 | } |
488 | return f; |
8cf8f3d1 |
489 | } |
490 | |
e7a1fdd7 |
491 | PerlIO_funcs PerlIO_object = { |
492 | "Via", |
493 | sizeof(PerlIOVia), |
494 | PERLIO_K_BUFFERED|PERLIO_K_DESTRUCT, |
495 | PerlIOVia_pushed, |
496 | PerlIOVia_popped, |
497 | NULL, /* PerlIOVia_open, */ |
498 | PerlIOVia_getarg, |
499 | PerlIOVia_fileno, |
8cf8f3d1 |
500 | PerlIOVia_dup, |
e7a1fdd7 |
501 | PerlIOVia_read, |
502 | PerlIOVia_unread, |
503 | PerlIOVia_write, |
504 | PerlIOVia_seek, |
505 | PerlIOVia_tell, |
506 | PerlIOVia_close, |
507 | PerlIOVia_flush, |
508 | PerlIOVia_fill, |
509 | PerlIOVia_eof, |
510 | PerlIOVia_error, |
511 | PerlIOVia_clearerr, |
512 | PerlIOVia_setlinebuf, |
513 | PerlIOVia_get_base, |
514 | PerlIOVia_bufsiz, |
515 | PerlIOVia_get_ptr, |
516 | PerlIOVia_get_cnt, |
517 | PerlIOVia_set_ptrcnt, |
518 | }; |
519 | |
520 | |
521 | #endif /* Layers available */ |
522 | |
523 | MODULE = PerlIO::Via PACKAGE = PerlIO::Via |
524 | PROTOTYPES: ENABLE; |
525 | |
526 | BOOT: |
527 | { |
528 | #ifdef PERLIO_LAYERS |
529 | PerlIO_define_layer(aTHX_ &PerlIO_object); |
530 | #endif |
531 | } |
532 | |