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; |
86e05cf2 |
37 | CV *BINMODE; |
802588c3 |
38 | CV *UTF8; |
e7a1fdd7 |
39 | } PerlIOVia; |
40 | |
41 | #define MYMethod(x) #x,&s->x |
42 | |
43 | CV * |
fc040538 |
44 | PerlIOVia_fetchmethod(pTHX_ PerlIOVia * s, char *method, CV ** save) |
e7a1fdd7 |
45 | { |
fc040538 |
46 | GV *gv = gv_fetchmeth(s->stash, method, strlen(method), 0); |
e7a1fdd7 |
47 | #if 0 |
bfcb3514 |
48 | Perl_warn(aTHX_ "Lookup %s::%s => %p", HvNAME_get(s->stash), method, gv); |
e7a1fdd7 |
49 | #endif |
fc040538 |
50 | if (gv) { |
51 | return *save = GvCV(gv); |
52 | } |
53 | else { |
54 | return *save = (CV *) - 1; |
55 | } |
e7a1fdd7 |
56 | } |
57 | |
d9dac8cd |
58 | /* |
59 | * Try and call method, possibly via cached lookup. |
60 | * If method does not exist return Nullsv (caller may fallback to another approach |
61 | * If method does exist call it with flags passing variable number of args |
62 | * Last arg is a "filehandle" to layer below (if present) |
63 | * Returns scalar returned by method (if any) otherwise sv_undef |
64 | */ |
65 | |
e7a1fdd7 |
66 | SV * |
fc040538 |
67 | PerlIOVia_method(pTHX_ PerlIO * f, char *method, CV ** save, int flags, |
68 | ...) |
e7a1fdd7 |
69 | { |
fc040538 |
70 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
71 | CV *cv = |
72 | (*save) ? *save : PerlIOVia_fetchmethod(aTHX_ s, method, save); |
73 | SV *result = Nullsv; |
74 | va_list ap; |
75 | va_start(ap, flags); |
76 | if (cv != (CV *) - 1) { |
77 | IV count; |
78 | dSP; |
79 | SV *arg; |
80 | PUSHSTACKi(PERLSI_MAGIC); |
81 | ENTER; |
82 | SPAGAIN; |
83 | PUSHMARK(sp); |
84 | XPUSHs(s->obj); |
85 | while ((arg = va_arg(ap, SV *))) { |
86 | XPUSHs(arg); |
87 | } |
88 | if (*PerlIONext(f)) { |
89 | if (!s->fh) { |
bfcb3514 |
90 | GV *gv = newGVgen(HvNAME_get(s->stash)); |
fc040538 |
91 | GvIOp(gv) = newIO(); |
92 | s->fh = newRV_noinc((SV *) gv); |
93 | s->io = GvIOp(gv); |
94 | } |
95 | IoIFP(s->io) = PerlIONext(f); |
96 | IoOFP(s->io) = PerlIONext(f); |
97 | XPUSHs(s->fh); |
98 | } |
99 | else { |
100 | PerlIO_debug("No next\n"); |
30ef3321 |
101 | /* FIXME: How should this work for OPEN etc? */ |
fc040538 |
102 | } |
103 | PUTBACK; |
104 | count = call_sv((SV *) cv, flags); |
105 | if (count) { |
106 | SPAGAIN; |
107 | result = POPs; |
108 | PUTBACK; |
109 | } |
110 | else { |
111 | result = &PL_sv_undef; |
112 | } |
113 | LEAVE; |
114 | POPSTACK; |
e7a1fdd7 |
115 | } |
fc040538 |
116 | va_end(ap); |
117 | return result; |
e7a1fdd7 |
118 | } |
119 | |
120 | IV |
fc040538 |
121 | PerlIOVia_pushed(pTHX_ PerlIO * f, const char *mode, SV * arg, |
122 | PerlIO_funcs * tab) |
e7a1fdd7 |
123 | { |
fc040538 |
124 | IV code = PerlIOBase_pushed(aTHX_ f, mode, Nullsv, tab); |
125 | if (code == 0) { |
126 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
127 | if (!arg) { |
128 | if (ckWARN(WARN_LAYER)) |
129 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
130 | "No package specified"); |
131 | errno = EINVAL; |
132 | code = -1; |
133 | } |
134 | else { |
135 | STRLEN pkglen = 0; |
7248df0a |
136 | const char *pkg = SvPV(arg, pkglen); |
fc040538 |
137 | s->obj = SvREFCNT_inc(arg); |
da51bb9b |
138 | s->stash = gv_stashpvn(pkg, pkglen, 0); |
fc040538 |
139 | if (!s->stash) { |
3904eff9 |
140 | SvREFCNT_dec(s->obj); |
fc040538 |
141 | s->obj = |
e934609f |
142 | newSVpvn(Perl_form(aTHX_ "PerlIO::via::%s", pkg), |
fc040538 |
143 | pkglen + 13); |
da51bb9b |
144 | s->stash = gv_stashpvn(SvPVX_const(s->obj), pkglen + 13, 0); |
fc040538 |
145 | } |
146 | if (s->stash) { |
abc0a015 |
147 | char lmode[8]; |
148 | SV *modesv; |
149 | SV *result; |
150 | if (!mode) { |
151 | /* binmode() passes NULL - so find out what mode is */ |
152 | mode = PerlIO_modestr(f,lmode); |
153 | } |
154 | modesv = sv_2mortal(newSVpvn(mode, strlen(mode))); |
155 | result = PerlIOVia_method(aTHX_ f, MYMethod(PUSHED), G_SCALAR, |
fc040538 |
156 | modesv, Nullsv); |
157 | if (result) { |
158 | if (sv_isobject(result)) { |
3904eff9 |
159 | SvREFCNT_dec(s->obj); |
fc040538 |
160 | s->obj = SvREFCNT_inc(result); |
fc040538 |
161 | } |
162 | else if (SvIV(result) != 0) |
163 | return SvIV(result); |
164 | } |
4f776d34 |
165 | else { |
166 | goto push_failed; |
167 | } |
802588c3 |
168 | modesv = (*PerlIONext(f) && (PerlIOBase(PerlIONext(f))->flags & PERLIO_F_UTF8)) |
169 | ? &PL_sv_yes : &PL_sv_no; |
170 | result = PerlIOVia_method(aTHX_ f, MYMethod(UTF8), G_SCALAR, modesv, Nullsv); |
171 | if (result && SvTRUE(result)) { |
7248df0a |
172 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
802588c3 |
173 | } |
174 | else { |
175 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; |
176 | } |
fc040538 |
177 | if (PerlIOVia_fetchmethod(aTHX_ s, MYMethod(FILL)) == |
178 | (CV *) - 1) |
179 | PerlIOBase(f)->flags &= ~PERLIO_F_FASTGETS; |
180 | else |
181 | PerlIOBase(f)->flags |= PERLIO_F_FASTGETS; |
182 | } |
183 | else { |
184 | if (ckWARN(WARN_LAYER)) |
185 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
186 | "Cannot find package '%.*s'", (int) pkglen, |
187 | pkg); |
4f776d34 |
188 | push_failed: |
267cbce7 |
189 | #ifdef ENOSYS |
fc040538 |
190 | errno = ENOSYS; |
267cbce7 |
191 | #else |
192 | #ifdef ENOENT |
fc040538 |
193 | errno = ENOENT; |
267cbce7 |
194 | #endif |
195 | #endif |
fc040538 |
196 | code = -1; |
197 | } |
198 | } |
e7a1fdd7 |
199 | } |
fc040538 |
200 | return code; |
e7a1fdd7 |
201 | } |
202 | |
203 | PerlIO * |
fc040538 |
204 | PerlIOVia_open(pTHX_ PerlIO_funcs * self, PerlIO_list_t * layers, |
205 | IV n, const char *mode, int fd, int imode, int perm, |
206 | PerlIO * f, int narg, SV ** args) |
e7a1fdd7 |
207 | { |
fc040538 |
208 | if (!f) { |
209 | f = PerlIO_push(aTHX_ PerlIO_allocate(aTHX), self, mode, |
210 | PerlIOArg); |
e7a1fdd7 |
211 | } |
fc040538 |
212 | else { |
213 | /* Reopen */ |
214 | if (!PerlIO_push(aTHX_ f, self, mode, PerlIOArg)) |
215 | return NULL; |
e7a1fdd7 |
216 | } |
fc040538 |
217 | if (f) { |
218 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
219 | SV *result = Nullsv; |
220 | if (fd >= 0) { |
221 | SV *fdsv = sv_2mortal(newSViv(fd)); |
222 | result = |
223 | PerlIOVia_method(aTHX_ f, MYMethod(FDOPEN), G_SCALAR, fdsv, |
224 | Nullsv); |
225 | } |
226 | else if (narg > 0) { |
227 | if (*mode == '#') { |
228 | SV *imodesv = sv_2mortal(newSViv(imode)); |
229 | SV *permsv = sv_2mortal(newSViv(perm)); |
230 | result = |
231 | PerlIOVia_method(aTHX_ f, MYMethod(SYSOPEN), G_SCALAR, |
232 | *args, imodesv, permsv, Nullsv); |
233 | } |
234 | else { |
235 | result = |
236 | PerlIOVia_method(aTHX_ f, MYMethod(OPEN), G_SCALAR, |
237 | *args, Nullsv); |
d9dac8cd |
238 | } |
d9dac8cd |
239 | } |
fc040538 |
240 | if (result) { |
241 | if (sv_isobject(result)) |
242 | s->obj = SvREFCNT_inc(result); |
243 | else if (!SvTRUE(result)) { |
244 | return NULL; |
245 | } |
246 | } |
247 | else { |
248 | /* Required open method not present */ |
249 | PerlIO_funcs *tab = NULL; |
d26d6e72 |
250 | IV m = n - 1; |
fc040538 |
251 | while (m >= 0) { |
252 | PerlIO_funcs *t = |
253 | PerlIO_layer_fetch(aTHX_ layers, m, NULL); |
254 | if (t && t->Open) { |
255 | tab = t; |
256 | break; |
257 | } |
d26d6e72 |
258 | m--; |
fc040538 |
259 | } |
260 | if (tab) { |
261 | if ((*tab->Open) (aTHX_ tab, layers, m, mode, fd, imode, |
262 | perm, PerlIONext(f), narg, args)) { |
263 | PerlIO_debug("Opened with %s => %p->%p\n", tab->name, |
264 | PerlIONext(f), *PerlIONext(f)); |
265 | if (m + 1 < n) { |
266 | /* |
267 | * More layers above the one that we used to open - |
268 | * apply them now |
269 | */ |
270 | if (PerlIO_apply_layera |
271 | (aTHX_ PerlIONext(f), mode, layers, m + 1, |
272 | n) != 0) { |
273 | /* If pushing layers fails close the file */ |
274 | PerlIO_close(f); |
275 | f = NULL; |
276 | } |
d9dac8cd |
277 | } |
30ef3321 |
278 | /* FIXME - Call an OPENED method here ? */ |
fc040538 |
279 | return f; |
280 | } |
281 | else { |
30ef3321 |
282 | PerlIO_debug("Open fail %s => %p->%p\n", tab->name, |
283 | PerlIONext(f), *PerlIONext(f)); |
fc040538 |
284 | /* Sub-layer open failed */ |
d9dac8cd |
285 | } |
d9dac8cd |
286 | } |
287 | else { |
30ef3321 |
288 | PerlIO_debug("Nothing to open with"); |
fc040538 |
289 | /* Nothing to do the open */ |
d9dac8cd |
290 | } |
30ef3321 |
291 | PerlIO_pop(aTHX_ f); |
fc040538 |
292 | return NULL; |
d9dac8cd |
293 | } |
d9dac8cd |
294 | } |
fc040538 |
295 | return f; |
e7a1fdd7 |
296 | } |
297 | |
298 | IV |
fc040538 |
299 | PerlIOVia_popped(pTHX_ PerlIO * f) |
e7a1fdd7 |
300 | { |
fc040538 |
301 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
302 | PerlIOVia_method(aTHX_ f, MYMethod(POPPED), G_VOID, Nullsv); |
303 | if (s->var) { |
304 | SvREFCNT_dec(s->var); |
305 | s->var = Nullsv; |
306 | } |
307 | |
308 | if (s->io) { |
309 | IoIFP(s->io) = NULL; |
310 | IoOFP(s->io) = NULL; |
311 | } |
312 | if (s->fh) { |
313 | SvREFCNT_dec(s->fh); |
314 | s->fh = Nullsv; |
315 | s->io = NULL; |
316 | } |
317 | if (s->obj) { |
318 | SvREFCNT_dec(s->obj); |
319 | s->obj = Nullsv; |
320 | } |
321 | return 0; |
e7a1fdd7 |
322 | } |
323 | |
324 | IV |
fc040538 |
325 | PerlIOVia_close(pTHX_ PerlIO * f) |
e7a1fdd7 |
326 | { |
fc040538 |
327 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
328 | IV code = PerlIOBase_close(aTHX_ f); |
329 | SV *result = |
330 | PerlIOVia_method(aTHX_ f, MYMethod(CLOSE), G_SCALAR, Nullsv); |
331 | if (result && SvIV(result) != 0) |
332 | code = SvIV(result); |
333 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
334 | return code; |
e7a1fdd7 |
335 | } |
336 | |
337 | IV |
fc040538 |
338 | PerlIOVia_fileno(pTHX_ PerlIO * f) |
e7a1fdd7 |
339 | { |
fc040538 |
340 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
341 | SV *result = |
342 | PerlIOVia_method(aTHX_ f, MYMethod(FILENO), G_SCALAR, Nullsv); |
343 | return (result) ? SvIV(result) : PerlIO_fileno(PerlIONext(f)); |
e7a1fdd7 |
344 | } |
345 | |
346 | IV |
fc040538 |
347 | PerlIOVia_binmode(pTHX_ PerlIO * f) |
86e05cf2 |
348 | { |
fc040538 |
349 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
350 | SV *result = |
351 | PerlIOVia_method(aTHX_ f, MYMethod(BINMODE), G_SCALAR, Nullsv); |
352 | if (!result || !SvOK(result)) { |
353 | PerlIO_pop(aTHX_ f); |
354 | return 0; |
355 | } |
356 | return SvIV(result); |
86e05cf2 |
357 | } |
358 | |
6efa4722 |
359 | IV |
fc040538 |
360 | PerlIOVia_seek(pTHX_ PerlIO * f, Off_t offset, int whence) |
e7a1fdd7 |
361 | { |
fc040538 |
362 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
4a9d6100 |
363 | SV *offsv = sv_2mortal(sizeof(Off_t) > sizeof(IV) |
364 | ? newSVnv((NV)offset) : newSViv((IV)offset)); |
fc040538 |
365 | SV *whsv = sv_2mortal(newSViv(whence)); |
366 | SV *result = |
367 | PerlIOVia_method(aTHX_ f, MYMethod(SEEK), G_SCALAR, offsv, whsv, |
368 | Nullsv); |
b6290011 |
369 | #if Off_t_size == 8 && defined(CONDOP_SIZE) && CONDOP_SIZE < Off_t_size |
370 | if (result) |
371 | return (Off_t) SvIV(result); |
372 | else |
373 | return (Off_t) -1; |
374 | #else |
fc040538 |
375 | return (result) ? SvIV(result) : -1; |
b6290011 |
376 | #endif |
e7a1fdd7 |
377 | } |
378 | |
379 | Off_t |
fc040538 |
380 | PerlIOVia_tell(pTHX_ PerlIO * f) |
e7a1fdd7 |
381 | { |
fc040538 |
382 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
383 | SV *result = |
384 | PerlIOVia_method(aTHX_ f, MYMethod(TELL), G_SCALAR, Nullsv); |
4a9d6100 |
385 | return (result) |
386 | ? (SvNOK(result) ? (Off_t)SvNV(result) : (Off_t)SvIV(result)) |
387 | : (Off_t) - 1; |
e7a1fdd7 |
388 | } |
389 | |
390 | SSize_t |
fc040538 |
391 | PerlIOVia_unread(pTHX_ PerlIO * f, const void *vbuf, Size_t count) |
e7a1fdd7 |
392 | { |
fc040538 |
393 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
394 | SV *buf = sv_2mortal(newSVpvn((char *) vbuf, count)); |
395 | SV *result = |
396 | PerlIOVia_method(aTHX_ f, MYMethod(UNREAD), G_SCALAR, buf, Nullsv); |
397 | if (result) |
398 | return (SSize_t) SvIV(result); |
399 | else { |
400 | return PerlIOBase_unread(aTHX_ f, vbuf, count); |
401 | } |
e7a1fdd7 |
402 | } |
403 | |
404 | SSize_t |
fc040538 |
405 | PerlIOVia_read(pTHX_ PerlIO * f, void *vbuf, Size_t count) |
e7a1fdd7 |
406 | { |
fc040538 |
407 | SSize_t rd = 0; |
408 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
409 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { |
410 | rd = PerlIOBase_read(aTHX_ f, vbuf, count); |
411 | } |
412 | else { |
413 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
414 | SV *buf = sv_2mortal(newSV(count)); |
415 | SV *n = sv_2mortal(newSViv(count)); |
416 | SV *result = |
417 | PerlIOVia_method(aTHX_ f, MYMethod(READ), G_SCALAR, buf, n, |
418 | Nullsv); |
419 | if (result) { |
420 | rd = (SSize_t) SvIV(result); |
421 | Move(SvPVX(buf), vbuf, rd, char); |
422 | return rd; |
423 | } |
424 | } |
e7a1fdd7 |
425 | } |
fc040538 |
426 | return rd; |
e7a1fdd7 |
427 | } |
428 | |
429 | SSize_t |
fc040538 |
430 | PerlIOVia_write(pTHX_ PerlIO * f, const void *vbuf, Size_t count) |
e7a1fdd7 |
431 | { |
fc040538 |
432 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
433 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
434 | SV *buf = newSVpvn((char *) vbuf, count); |
435 | SV *result = |
436 | PerlIOVia_method(aTHX_ f, MYMethod(WRITE), G_SCALAR, buf, |
437 | Nullsv); |
438 | SvREFCNT_dec(buf); |
439 | if (result) |
440 | return (SSize_t) SvIV(result); |
441 | return -1; |
442 | } |
443 | return 0; |
e7a1fdd7 |
444 | } |
445 | |
446 | IV |
fc040538 |
447 | PerlIOVia_fill(pTHX_ PerlIO * f) |
e7a1fdd7 |
448 | { |
fc040538 |
449 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
450 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
451 | SV *result = |
452 | PerlIOVia_method(aTHX_ f, MYMethod(FILL), G_SCALAR, Nullsv); |
453 | if (s->var) { |
454 | SvREFCNT_dec(s->var); |
455 | s->var = Nullsv; |
456 | } |
457 | if (result && SvOK(result)) { |
458 | STRLEN len = 0; |
7248df0a |
459 | const char *p = SvPV(result, len); |
fc040538 |
460 | s->var = newSVpvn(p, len); |
461 | s->cnt = SvCUR(s->var); |
462 | return 0; |
463 | } |
464 | else |
465 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
e7a1fdd7 |
466 | } |
fc040538 |
467 | return -1; |
e7a1fdd7 |
468 | } |
469 | |
470 | IV |
fc040538 |
471 | PerlIOVia_flush(pTHX_ PerlIO * f) |
e7a1fdd7 |
472 | { |
fc040538 |
473 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
474 | SV *result = |
475 | PerlIOVia_method(aTHX_ f, MYMethod(FLUSH), G_SCALAR, Nullsv); |
476 | if (s->var && s->cnt > 0) { |
477 | SvREFCNT_dec(s->var); |
478 | s->var = Nullsv; |
479 | } |
480 | return (result) ? SvIV(result) : 0; |
e7a1fdd7 |
481 | } |
482 | |
483 | STDCHAR * |
fc040538 |
484 | PerlIOVia_get_base(pTHX_ PerlIO * f) |
e7a1fdd7 |
485 | { |
fc040538 |
486 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
487 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
488 | if (s->var) { |
489 | return (STDCHAR *) SvPVX(s->var); |
490 | } |
e7a1fdd7 |
491 | } |
fc040538 |
492 | return (STDCHAR *) Nullch; |
e7a1fdd7 |
493 | } |
494 | |
495 | STDCHAR * |
fc040538 |
496 | PerlIOVia_get_ptr(pTHX_ PerlIO * f) |
e7a1fdd7 |
497 | { |
fc040538 |
498 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
499 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
500 | if (s->var) { |
501 | STDCHAR *p = (STDCHAR *) (SvEND(s->var) - s->cnt); |
502 | return p; |
503 | } |
e7a1fdd7 |
504 | } |
fc040538 |
505 | return (STDCHAR *) Nullch; |
e7a1fdd7 |
506 | } |
507 | |
508 | SSize_t |
fc040538 |
509 | PerlIOVia_get_cnt(pTHX_ PerlIO * f) |
e7a1fdd7 |
510 | { |
fc040538 |
511 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
512 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
513 | if (s->var) { |
514 | return s->cnt; |
515 | } |
e7a1fdd7 |
516 | } |
fc040538 |
517 | return 0; |
e7a1fdd7 |
518 | } |
519 | |
520 | Size_t |
fc040538 |
521 | PerlIOVia_bufsiz(pTHX_ PerlIO * f) |
e7a1fdd7 |
522 | { |
fc040538 |
523 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
524 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
525 | if (s->var) |
526 | return SvCUR(s->var); |
527 | } |
528 | return 0; |
e7a1fdd7 |
529 | } |
530 | |
531 | void |
fc040538 |
532 | PerlIOVia_set_ptrcnt(pTHX_ PerlIO * f, STDCHAR * ptr, SSize_t cnt) |
e7a1fdd7 |
533 | { |
fc040538 |
534 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
535 | s->cnt = cnt; |
e7a1fdd7 |
536 | } |
537 | |
538 | void |
fc040538 |
539 | PerlIOVia_setlinebuf(pTHX_ PerlIO * f) |
e7a1fdd7 |
540 | { |
fc040538 |
541 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
542 | PerlIOVia_method(aTHX_ f, MYMethod(SETLINEBUF), G_VOID, Nullsv); |
543 | PerlIOBase_setlinebuf(aTHX_ f); |
e7a1fdd7 |
544 | } |
545 | |
546 | void |
fc040538 |
547 | PerlIOVia_clearerr(pTHX_ PerlIO * f) |
e7a1fdd7 |
548 | { |
fc040538 |
549 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
550 | PerlIOVia_method(aTHX_ f, MYMethod(CLEARERR), G_VOID, Nullsv); |
551 | PerlIOBase_clearerr(aTHX_ f); |
e7a1fdd7 |
552 | } |
553 | |
c7997937 |
554 | IV |
fc040538 |
555 | PerlIOVia_error(pTHX_ PerlIO * f) |
e7a1fdd7 |
556 | { |
fc040538 |
557 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
558 | SV *result = |
559 | PerlIOVia_method(aTHX_ f, "ERROR", &s->mERROR, G_SCALAR, Nullsv); |
560 | return (result) ? SvIV(result) : PerlIOBase_error(aTHX_ f); |
e7a1fdd7 |
561 | } |
562 | |
563 | IV |
fc040538 |
564 | PerlIOVia_eof(pTHX_ PerlIO * f) |
e7a1fdd7 |
565 | { |
fc040538 |
566 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
567 | SV *result = |
568 | PerlIOVia_method(aTHX_ f, "EOF", &s->mEOF, G_SCALAR, Nullsv); |
569 | return (result) ? SvIV(result) : PerlIOBase_eof(aTHX_ f); |
e7a1fdd7 |
570 | } |
571 | |
ecdeb87c |
572 | SV * |
fc040538 |
573 | PerlIOVia_getarg(pTHX_ PerlIO * f, CLONE_PARAMS * param, int flags) |
ecdeb87c |
574 | { |
fc040538 |
575 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
576 | return PerlIOVia_method(aTHX_ f, MYMethod(GETARG), G_SCALAR, Nullsv); |
ecdeb87c |
577 | } |
578 | |
8cf8f3d1 |
579 | PerlIO * |
fc040538 |
580 | PerlIOVia_dup(pTHX_ PerlIO * f, PerlIO * o, CLONE_PARAMS * param, |
581 | int flags) |
8cf8f3d1 |
582 | { |
fc040538 |
583 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
584 | /* Most of the fields will lazily set themselves up as needed |
585 | stash and obj have been set up by the implied push |
586 | */ |
587 | } |
588 | return f; |
8cf8f3d1 |
589 | } |
590 | |
fc040538 |
591 | |
592 | |
27da23d5 |
593 | PERLIO_FUNCS_DECL(PerlIO_object) = { |
2dc2558e |
594 | sizeof(PerlIO_funcs), |
e934609f |
595 | "via", |
e7a1fdd7 |
596 | sizeof(PerlIOVia), |
597 | PERLIO_K_BUFFERED|PERLIO_K_DESTRUCT, |
598 | PerlIOVia_pushed, |
599 | PerlIOVia_popped, |
d9dac8cd |
600 | PerlIOVia_open, /* NULL, */ |
86e05cf2 |
601 | PerlIOVia_binmode, /* NULL, */ |
e7a1fdd7 |
602 | PerlIOVia_getarg, |
603 | PerlIOVia_fileno, |
8cf8f3d1 |
604 | PerlIOVia_dup, |
e7a1fdd7 |
605 | PerlIOVia_read, |
606 | PerlIOVia_unread, |
607 | PerlIOVia_write, |
608 | PerlIOVia_seek, |
609 | PerlIOVia_tell, |
610 | PerlIOVia_close, |
611 | PerlIOVia_flush, |
612 | PerlIOVia_fill, |
613 | PerlIOVia_eof, |
614 | PerlIOVia_error, |
615 | PerlIOVia_clearerr, |
616 | PerlIOVia_setlinebuf, |
617 | PerlIOVia_get_base, |
618 | PerlIOVia_bufsiz, |
619 | PerlIOVia_get_ptr, |
620 | PerlIOVia_get_cnt, |
621 | PerlIOVia_set_ptrcnt, |
622 | }; |
623 | |
624 | |
625 | #endif /* Layers available */ |
626 | |
e934609f |
627 | MODULE = PerlIO::via PACKAGE = PerlIO::via |
e7a1fdd7 |
628 | PROTOTYPES: ENABLE; |
629 | |
630 | BOOT: |
631 | { |
632 | #ifdef PERLIO_LAYERS |
27da23d5 |
633 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_object)); |
e7a1fdd7 |
634 | #endif |
635 | } |
636 | |
fc040538 |
637 | |
30ef3321 |
638 | |
639 | |
640 | |