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 | { |
118 | Perl_warn(aTHX_ "No package specified"); |
119 | code = -1; |
120 | } |
121 | else |
122 | { |
123 | STRLEN pkglen = 0; |
124 | char *pkg = SvPV(arg,pkglen); |
267cbce7 |
125 | s->obj = SvREFCNT_inc(arg); |
e7a1fdd7 |
126 | s->stash = gv_stashpvn(pkg, pkglen, FALSE); |
127 | if (s->stash) |
128 | { |
129 | SV *modesv = (mode) ? sv_2mortal(newSVpvn(mode,strlen(mode))) : Nullsv; |
130 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(PUSHED),G_SCALAR,modesv,Nullsv); |
131 | if (result) |
132 | { |
133 | if (sv_isobject(result)) |
267cbce7 |
134 | { |
135 | s->obj = SvREFCNT_inc(result); |
136 | SvREFCNT_dec(arg); |
137 | } |
e7a1fdd7 |
138 | else if (SvIV(result) != 0) |
139 | return SvIV(result); |
140 | } |
141 | if (PerlIOVia_fetchmethod(aTHX_ s,MYMethod(FILL)) == (CV *) -1) |
142 | PerlIOBase(f)->flags &= ~PERLIO_F_FASTGETS; |
143 | else |
144 | PerlIOBase(f)->flags |= PERLIO_F_FASTGETS; |
145 | } |
146 | else |
147 | { |
148 | Perl_warn(aTHX_ "Cannot find package '%.*s'",(int) pkglen,pkg); |
267cbce7 |
149 | #ifdef ENOSYS |
150 | errno = ENOSYS; |
151 | #else |
152 | #ifdef ENOENT |
153 | errno = ENOENT; |
154 | #endif |
155 | #endif |
e7a1fdd7 |
156 | code = -1; |
157 | } |
158 | } |
159 | } |
160 | return code; |
161 | } |
162 | |
163 | PerlIO * |
fcf2db38 |
164 | 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 |
165 | { |
166 | if (!f) |
167 | { |
168 | f = PerlIO_push(aTHX_ PerlIO_allocate(aTHX),self,mode,PerlIOArg); |
169 | } |
170 | else |
171 | { |
172 | if (!PerlIO_push(aTHX_ f,self,mode,PerlIOArg)) |
173 | return NULL; |
174 | } |
175 | if (f) |
176 | { |
177 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
178 | SV *result = Nullsv; |
179 | if (fd >= 0) |
180 | { |
181 | SV *fdsv = sv_2mortal(newSViv(fd)); |
182 | result = PerlIOVia_method(aTHX_ f,MYMethod(FDOPEN),G_SCALAR,fdsv,Nullsv); |
183 | } |
184 | else if (narg > 0) |
185 | { |
186 | if (*mode == '#') |
187 | { |
188 | SV *imodesv = sv_2mortal(newSViv(imode)); |
189 | SV *permsv = sv_2mortal(newSViv(perm)); |
190 | result = PerlIOVia_method(aTHX_ f,MYMethod(SYSOPEN),G_SCALAR,*args,imodesv,permsv,Nullsv); |
191 | } |
192 | else |
193 | { |
194 | result = PerlIOVia_method(aTHX_ f,MYMethod(OPEN),G_SCALAR,*args,Nullsv); |
195 | } |
196 | } |
197 | if (result) |
198 | { |
199 | if (sv_isobject(result)) |
200 | s->obj = SvREFCNT_inc(result); |
201 | else if (!SvTRUE(result)) |
202 | { |
203 | return NULL; |
204 | } |
205 | } |
206 | else |
207 | return NULL; |
208 | } |
209 | return f; |
210 | } |
211 | |
212 | IV |
f62ce20a |
213 | PerlIOVia_popped(pTHX_ PerlIO *f) |
e7a1fdd7 |
214 | { |
e7a1fdd7 |
215 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
216 | PerlIOVia_method(aTHX_ f,MYMethod(POPPED),G_VOID,Nullsv); |
217 | if (s->var) |
218 | { |
219 | SvREFCNT_dec(s->var); |
220 | s->var = Nullsv; |
221 | } |
222 | |
223 | if (s->io) |
224 | { |
225 | IoIFP(s->io) = NULL; |
226 | IoOFP(s->io) = NULL; |
227 | } |
228 | if (s->fh) |
229 | { |
230 | SvREFCNT_dec(s->fh); |
231 | s->fh = Nullsv; |
232 | s->io = NULL; |
233 | } |
234 | if (s->obj) |
235 | { |
236 | SvREFCNT_dec(s->obj); |
237 | s->obj = Nullsv; |
238 | } |
239 | return 0; |
240 | } |
241 | |
242 | IV |
f62ce20a |
243 | PerlIOVia_close(pTHX_ PerlIO *f) |
e7a1fdd7 |
244 | { |
e7a1fdd7 |
245 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
f62ce20a |
246 | IV code = PerlIOBase_close(aTHX_ f); |
e7a1fdd7 |
247 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(CLOSE),G_SCALAR,Nullsv); |
248 | if (result && SvIV(result) != 0) |
249 | code = SvIV(result); |
250 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); |
251 | return code; |
252 | } |
253 | |
254 | IV |
f62ce20a |
255 | PerlIOVia_fileno(pTHX_ PerlIO *f) |
e7a1fdd7 |
256 | { |
e7a1fdd7 |
257 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
258 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FILENO),G_SCALAR,Nullsv); |
259 | return (result) ? SvIV(result) : PerlIO_fileno(PerlIONext(f)); |
260 | } |
261 | |
262 | IV |
f62ce20a |
263 | PerlIOVia_seek(pTHX_ PerlIO *f, Off_t offset, int whence) |
e7a1fdd7 |
264 | { |
e7a1fdd7 |
265 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
266 | SV *offsv = sv_2mortal(newSViv(offset)); |
9f16d962 |
267 | SV *whsv = sv_2mortal(newSViv(whence)); |
e7a1fdd7 |
268 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(SEEK),G_SCALAR,offsv,whsv,Nullsv); |
269 | return (result) ? SvIV(result) : -1; |
270 | } |
271 | |
272 | Off_t |
f62ce20a |
273 | PerlIOVia_tell(pTHX_ PerlIO *f) |
e7a1fdd7 |
274 | { |
e7a1fdd7 |
275 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
276 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(TELL),G_SCALAR,Nullsv); |
9f16d962 |
277 | return (result) ? (Off_t) SvIV(result) : (Off_t) -1; |
e7a1fdd7 |
278 | } |
279 | |
280 | SSize_t |
f62ce20a |
281 | PerlIOVia_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
e7a1fdd7 |
282 | { |
e7a1fdd7 |
283 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
284 | SV *buf = sv_2mortal(newSVpvn((char *)vbuf,count)); |
285 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(UNREAD),G_SCALAR,buf,Nullsv); |
286 | if (result) |
287 | return (SSize_t) SvIV(result); |
288 | else |
289 | { |
f62ce20a |
290 | return PerlIOBase_unread(aTHX_ f,vbuf,count); |
e7a1fdd7 |
291 | } |
292 | } |
293 | |
294 | SSize_t |
f62ce20a |
295 | PerlIOVia_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) |
e7a1fdd7 |
296 | { |
297 | SSize_t rd = 0; |
298 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
299 | { |
300 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) |
301 | { |
f62ce20a |
302 | rd = PerlIOBase_read(aTHX_ f,vbuf,count); |
e7a1fdd7 |
303 | } |
304 | else |
305 | { |
e7a1fdd7 |
306 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
307 | SV *buf = sv_2mortal(newSV(count)); |
308 | SV *n = sv_2mortal(newSViv(count)); |
309 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(READ),G_SCALAR,buf,n,Nullsv); |
310 | if (result) |
311 | { |
312 | rd = (SSize_t) SvIV(result); |
313 | Move(SvPVX(buf),vbuf,rd,char); |
314 | return rd; |
315 | } |
316 | } |
317 | } |
318 | return rd; |
319 | } |
320 | |
321 | SSize_t |
f62ce20a |
322 | PerlIOVia_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) |
e7a1fdd7 |
323 | { |
324 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) |
325 | { |
e7a1fdd7 |
326 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
327 | SV *buf = newSVpvn((char *)vbuf,count); |
328 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(WRITE),G_SCALAR,buf,Nullsv); |
329 | SvREFCNT_dec(buf); |
330 | if (result) |
331 | return (SSize_t) SvIV(result); |
332 | return -1; |
333 | } |
334 | return 0; |
335 | } |
336 | |
337 | IV |
f62ce20a |
338 | PerlIOVia_fill(pTHX_ PerlIO *f) |
e7a1fdd7 |
339 | { |
340 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
341 | { |
e7a1fdd7 |
342 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
343 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FILL),G_SCALAR,Nullsv); |
344 | if (s->var) |
345 | { |
346 | SvREFCNT_dec(s->var); |
347 | s->var = Nullsv; |
348 | } |
349 | if (result && SvOK(result)) |
350 | { |
351 | STRLEN len = 0; |
352 | char *p = SvPV(result,len); |
353 | s->var = newSVpvn(p,len); |
354 | s->cnt = SvCUR(s->var); |
355 | return 0; |
356 | } |
357 | else |
358 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
359 | } |
360 | return -1; |
361 | } |
362 | |
363 | IV |
f62ce20a |
364 | PerlIOVia_flush(pTHX_ PerlIO *f) |
e7a1fdd7 |
365 | { |
e7a1fdd7 |
366 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
367 | SV *result = PerlIOVia_method(aTHX_ f,MYMethod(FLUSH),G_SCALAR,Nullsv); |
368 | if (s->var && s->cnt > 0) |
369 | { |
370 | SvREFCNT_dec(s->var); |
371 | s->var = Nullsv; |
372 | } |
373 | return (result) ? SvIV(result) : 0; |
374 | } |
375 | |
376 | STDCHAR * |
f62ce20a |
377 | PerlIOVia_get_base(pTHX_ PerlIO *f) |
e7a1fdd7 |
378 | { |
379 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
380 | { |
e7a1fdd7 |
381 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
382 | if (s->var) |
383 | { |
384 | return (STDCHAR *)SvPVX(s->var); |
385 | } |
386 | } |
387 | return (STDCHAR *) Nullch; |
388 | } |
389 | |
390 | STDCHAR * |
f62ce20a |
391 | PerlIOVia_get_ptr(pTHX_ PerlIO *f) |
e7a1fdd7 |
392 | { |
393 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
394 | { |
395 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
396 | if (s->var) |
397 | { |
e7a1fdd7 |
398 | STDCHAR *p = (STDCHAR *)(SvEND(s->var) - s->cnt); |
399 | return p; |
400 | } |
401 | } |
402 | return (STDCHAR *) Nullch; |
403 | } |
404 | |
405 | SSize_t |
f62ce20a |
406 | PerlIOVia_get_cnt(pTHX_ PerlIO *f) |
e7a1fdd7 |
407 | { |
408 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
409 | { |
410 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
411 | if (s->var) |
412 | { |
413 | return s->cnt; |
414 | } |
415 | } |
416 | return 0; |
417 | } |
418 | |
419 | Size_t |
f62ce20a |
420 | PerlIOVia_bufsiz(pTHX_ PerlIO *f) |
e7a1fdd7 |
421 | { |
422 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) |
423 | { |
424 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
425 | if (s->var) |
426 | return SvCUR(s->var); |
427 | } |
428 | return 0; |
429 | } |
430 | |
431 | void |
f62ce20a |
432 | PerlIOVia_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR *ptr, SSize_t cnt) |
e7a1fdd7 |
433 | { |
434 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
435 | s->cnt = cnt; |
436 | } |
437 | |
438 | void |
f62ce20a |
439 | PerlIOVia_setlinebuf(pTHX_ PerlIO *f) |
e7a1fdd7 |
440 | { |
e7a1fdd7 |
441 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
442 | PerlIOVia_method(aTHX_ f,MYMethod(SETLINEBUF),G_VOID,Nullsv); |
f62ce20a |
443 | PerlIOBase_setlinebuf(aTHX_ f); |
e7a1fdd7 |
444 | } |
445 | |
446 | void |
f62ce20a |
447 | PerlIOVia_clearerr(pTHX_ PerlIO *f) |
e7a1fdd7 |
448 | { |
e7a1fdd7 |
449 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
450 | PerlIOVia_method(aTHX_ f,MYMethod(CLEARERR),G_VOID,Nullsv); |
f62ce20a |
451 | PerlIOBase_clearerr(aTHX_ f); |
e7a1fdd7 |
452 | } |
453 | |
c7997937 |
454 | IV |
f62ce20a |
455 | PerlIOVia_error(pTHX_ PerlIO *f) |
e7a1fdd7 |
456 | { |
e7a1fdd7 |
457 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
c7997937 |
458 | SV *result = PerlIOVia_method(aTHX_ f,"ERROR",&s->mERROR,G_SCALAR,Nullsv); |
f62ce20a |
459 | return (result) ? SvIV(result) : PerlIOBase_error(aTHX_ f); |
e7a1fdd7 |
460 | } |
461 | |
462 | IV |
f62ce20a |
463 | PerlIOVia_eof(pTHX_ PerlIO *f) |
e7a1fdd7 |
464 | { |
e7a1fdd7 |
465 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
466 | SV *result = PerlIOVia_method(aTHX_ f,"EOF",&s->mEOF,G_SCALAR,Nullsv); |
f62ce20a |
467 | return (result) ? SvIV(result) : PerlIOBase_eof(aTHX_ f); |
e7a1fdd7 |
468 | } |
469 | |
ecdeb87c |
470 | SV * |
471 | PerlIOVia_getarg(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
472 | { |
473 | PerlIOVia *s = PerlIOSelf(f,PerlIOVia); |
474 | return PerlIOVia_method(aTHX_ f,MYMethod(GETARG),G_SCALAR,Nullsv); |
475 | } |
476 | |
8cf8f3d1 |
477 | PerlIO * |
ecdeb87c |
478 | PerlIOVia_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) |
8cf8f3d1 |
479 | { |
ecdeb87c |
480 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) |
9f16d962 |
481 | { |
ecdeb87c |
482 | /* Most of the fields will lazily set themselves up as needed |
9f16d962 |
483 | stash and obj have been set up by the implied push |
484 | */ |
485 | } |
486 | return f; |
8cf8f3d1 |
487 | } |
488 | |
e7a1fdd7 |
489 | PerlIO_funcs PerlIO_object = { |
490 | "Via", |
491 | sizeof(PerlIOVia), |
492 | PERLIO_K_BUFFERED|PERLIO_K_DESTRUCT, |
493 | PerlIOVia_pushed, |
494 | PerlIOVia_popped, |
495 | NULL, /* PerlIOVia_open, */ |
496 | PerlIOVia_getarg, |
497 | PerlIOVia_fileno, |
8cf8f3d1 |
498 | PerlIOVia_dup, |
e7a1fdd7 |
499 | PerlIOVia_read, |
500 | PerlIOVia_unread, |
501 | PerlIOVia_write, |
502 | PerlIOVia_seek, |
503 | PerlIOVia_tell, |
504 | PerlIOVia_close, |
505 | PerlIOVia_flush, |
506 | PerlIOVia_fill, |
507 | PerlIOVia_eof, |
508 | PerlIOVia_error, |
509 | PerlIOVia_clearerr, |
510 | PerlIOVia_setlinebuf, |
511 | PerlIOVia_get_base, |
512 | PerlIOVia_bufsiz, |
513 | PerlIOVia_get_ptr, |
514 | PerlIOVia_get_cnt, |
515 | PerlIOVia_set_ptrcnt, |
516 | }; |
517 | |
518 | |
519 | #endif /* Layers available */ |
520 | |
521 | MODULE = PerlIO::Via PACKAGE = PerlIO::Via |
522 | PROTOTYPES: ENABLE; |
523 | |
524 | BOOT: |
525 | { |
526 | #ifdef PERLIO_LAYERS |
527 | PerlIO_define_layer(aTHX_ &PerlIO_object); |
528 | #endif |
529 | } |
530 | |