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 * |
d3f5e399 |
44 | PerlIOVia_fetchmethod(pTHX_ PerlIOVia * s, const 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 * |
d3f5e399 |
67 | PerlIOVia_method(pTHX_ PerlIO * f, const char *method, CV ** save, int flags, |
fc040538 |
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(); |
5a33563f |
92 | s->fh = newRV((SV *) gv); |
fc040538 |
93 | s->io = GvIOp(gv); |
8d06e08c |
94 | if (gv) { |
95 | /* shamelessly stolen from IO::File's new_tmpfile() */ |
96 | hv_delete(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), G_DISCARD); |
97 | } |
fc040538 |
98 | } |
99 | IoIFP(s->io) = PerlIONext(f); |
100 | IoOFP(s->io) = PerlIONext(f); |
101 | XPUSHs(s->fh); |
102 | } |
103 | else { |
104 | PerlIO_debug("No next\n"); |
30ef3321 |
105 | /* FIXME: How should this work for OPEN etc? */ |
fc040538 |
106 | } |
107 | PUTBACK; |
108 | count = call_sv((SV *) cv, flags); |
109 | if (count) { |
110 | SPAGAIN; |
111 | result = POPs; |
112 | PUTBACK; |
113 | } |
114 | else { |
115 | result = &PL_sv_undef; |
116 | } |
117 | LEAVE; |
118 | POPSTACK; |
e7a1fdd7 |
119 | } |
fc040538 |
120 | va_end(ap); |
121 | return result; |
e7a1fdd7 |
122 | } |
123 | |
124 | IV |
fc040538 |
125 | PerlIOVia_pushed(pTHX_ PerlIO * f, const char *mode, SV * arg, |
126 | PerlIO_funcs * tab) |
e7a1fdd7 |
127 | { |
fc040538 |
128 | IV code = PerlIOBase_pushed(aTHX_ f, mode, Nullsv, tab); |
129 | if (code == 0) { |
130 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
131 | if (!arg) { |
132 | if (ckWARN(WARN_LAYER)) |
133 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
134 | "No package specified"); |
135 | errno = EINVAL; |
136 | code = -1; |
137 | } |
138 | else { |
139 | STRLEN pkglen = 0; |
7248df0a |
140 | const char *pkg = SvPV(arg, pkglen); |
a681c2f1 |
141 | s->obj = |
142 | newSVpvn(Perl_form(aTHX_ "PerlIO::via::%s", pkg), |
143 | pkglen + 13); |
144 | s->stash = gv_stashpvn(SvPVX_const(s->obj), pkglen + 13, 0); |
fc040538 |
145 | if (!s->stash) { |
3904eff9 |
146 | SvREFCNT_dec(s->obj); |
a681c2f1 |
147 | s->obj = SvREFCNT_inc(arg); |
148 | s->stash = gv_stashpvn(pkg, pkglen, 0); |
fc040538 |
149 | } |
150 | if (s->stash) { |
abc0a015 |
151 | char lmode[8]; |
152 | SV *modesv; |
153 | SV *result; |
154 | if (!mode) { |
155 | /* binmode() passes NULL - so find out what mode is */ |
156 | mode = PerlIO_modestr(f,lmode); |
157 | } |
158 | modesv = sv_2mortal(newSVpvn(mode, strlen(mode))); |
159 | result = PerlIOVia_method(aTHX_ f, MYMethod(PUSHED), G_SCALAR, |
fc040538 |
160 | modesv, Nullsv); |
161 | if (result) { |
162 | if (sv_isobject(result)) { |
3904eff9 |
163 | SvREFCNT_dec(s->obj); |
fc040538 |
164 | s->obj = SvREFCNT_inc(result); |
fc040538 |
165 | } |
166 | else if (SvIV(result) != 0) |
167 | return SvIV(result); |
168 | } |
4f776d34 |
169 | else { |
170 | goto push_failed; |
171 | } |
802588c3 |
172 | modesv = (*PerlIONext(f) && (PerlIOBase(PerlIONext(f))->flags & PERLIO_F_UTF8)) |
173 | ? &PL_sv_yes : &PL_sv_no; |
174 | result = PerlIOVia_method(aTHX_ f, MYMethod(UTF8), G_SCALAR, modesv, Nullsv); |
175 | if (result && SvTRUE(result)) { |
7248df0a |
176 | PerlIOBase(f)->flags |= PERLIO_F_UTF8; |
802588c3 |
177 | } |
178 | else { |
179 | PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; |
180 | } |
fc040538 |
181 | if (PerlIOVia_fetchmethod(aTHX_ s, MYMethod(FILL)) == |
182 | (CV *) - 1) |
183 | PerlIOBase(f)->flags &= ~PERLIO_F_FASTGETS; |
184 | else |
185 | PerlIOBase(f)->flags |= PERLIO_F_FASTGETS; |
186 | } |
187 | else { |
188 | if (ckWARN(WARN_LAYER)) |
189 | Perl_warner(aTHX_ packWARN(WARN_LAYER), |
190 | "Cannot find package '%.*s'", (int) pkglen, |
191 | pkg); |
4f776d34 |
192 | push_failed: |
267cbce7 |
193 | #ifdef ENOSYS |
fc040538 |
194 | errno = ENOSYS; |
267cbce7 |
195 | #else |
196 | #ifdef ENOENT |
fc040538 |
197 | errno = ENOENT; |
267cbce7 |
198 | #endif |
199 | #endif |
fc040538 |
200 | code = -1; |
201 | } |
202 | } |
e7a1fdd7 |
203 | } |
fc040538 |
204 | return code; |
e7a1fdd7 |
205 | } |
206 | |
207 | PerlIO * |
fc040538 |
208 | PerlIOVia_open(pTHX_ PerlIO_funcs * self, PerlIO_list_t * layers, |
209 | IV n, const char *mode, int fd, int imode, int perm, |
210 | PerlIO * f, int narg, SV ** args) |
e7a1fdd7 |
211 | { |
fc040538 |
212 | if (!f) { |
213 | f = PerlIO_push(aTHX_ PerlIO_allocate(aTHX), self, mode, |
214 | PerlIOArg); |
e7a1fdd7 |
215 | } |
fc040538 |
216 | else { |
217 | /* Reopen */ |
218 | if (!PerlIO_push(aTHX_ f, self, mode, PerlIOArg)) |
219 | return NULL; |
e7a1fdd7 |
220 | } |
fc040538 |
221 | if (f) { |
222 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
223 | SV *result = Nullsv; |
224 | if (fd >= 0) { |
225 | SV *fdsv = sv_2mortal(newSViv(fd)); |
226 | result = |
227 | PerlIOVia_method(aTHX_ f, MYMethod(FDOPEN), G_SCALAR, fdsv, |
228 | Nullsv); |
229 | } |
230 | else if (narg > 0) { |
231 | if (*mode == '#') { |
232 | SV *imodesv = sv_2mortal(newSViv(imode)); |
233 | SV *permsv = sv_2mortal(newSViv(perm)); |
234 | result = |
235 | PerlIOVia_method(aTHX_ f, MYMethod(SYSOPEN), G_SCALAR, |
236 | *args, imodesv, permsv, Nullsv); |
237 | } |
238 | else { |
239 | result = |
240 | PerlIOVia_method(aTHX_ f, MYMethod(OPEN), G_SCALAR, |
241 | *args, Nullsv); |
d9dac8cd |
242 | } |
d9dac8cd |
243 | } |
fc040538 |
244 | if (result) { |
245 | if (sv_isobject(result)) |
246 | s->obj = SvREFCNT_inc(result); |
247 | else if (!SvTRUE(result)) { |
248 | return NULL; |
249 | } |
250 | } |
251 | else { |
252 | /* Required open method not present */ |
253 | PerlIO_funcs *tab = NULL; |
d26d6e72 |
254 | IV m = n - 1; |
fc040538 |
255 | while (m >= 0) { |
256 | PerlIO_funcs *t = |
257 | PerlIO_layer_fetch(aTHX_ layers, m, NULL); |
258 | if (t && t->Open) { |
259 | tab = t; |
260 | break; |
261 | } |
d26d6e72 |
262 | m--; |
fc040538 |
263 | } |
264 | if (tab) { |
265 | if ((*tab->Open) (aTHX_ tab, layers, m, mode, fd, imode, |
266 | perm, PerlIONext(f), narg, args)) { |
267 | PerlIO_debug("Opened with %s => %p->%p\n", tab->name, |
268 | PerlIONext(f), *PerlIONext(f)); |
269 | if (m + 1 < n) { |
270 | /* |
271 | * More layers above the one that we used to open - |
272 | * apply them now |
273 | */ |
274 | if (PerlIO_apply_layera |
275 | (aTHX_ PerlIONext(f), mode, layers, m + 1, |
276 | n) != 0) { |
277 | /* If pushing layers fails close the file */ |
278 | PerlIO_close(f); |
279 | f = NULL; |
280 | } |
d9dac8cd |
281 | } |
30ef3321 |
282 | /* FIXME - Call an OPENED method here ? */ |
fc040538 |
283 | return f; |
284 | } |
285 | else { |
30ef3321 |
286 | PerlIO_debug("Open fail %s => %p->%p\n", tab->name, |
287 | PerlIONext(f), *PerlIONext(f)); |
fc040538 |
288 | /* Sub-layer open failed */ |
d9dac8cd |
289 | } |
d9dac8cd |
290 | } |
291 | else { |
30ef3321 |
292 | PerlIO_debug("Nothing to open with"); |
fc040538 |
293 | /* Nothing to do the open */ |
d9dac8cd |
294 | } |
30ef3321 |
295 | PerlIO_pop(aTHX_ f); |
fc040538 |
296 | return NULL; |
d9dac8cd |
297 | } |
d9dac8cd |
298 | } |
fc040538 |
299 | return f; |
e7a1fdd7 |
300 | } |
301 | |
302 | IV |
fc040538 |
303 | PerlIOVia_popped(pTHX_ PerlIO * f) |
e7a1fdd7 |
304 | { |
fc040538 |
305 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
306 | PerlIOVia_method(aTHX_ f, MYMethod(POPPED), G_VOID, Nullsv); |
307 | if (s->var) { |
308 | SvREFCNT_dec(s->var); |
309 | s->var = Nullsv; |
310 | } |
311 | |
312 | if (s->io) { |
313 | IoIFP(s->io) = NULL; |
314 | IoOFP(s->io) = NULL; |
315 | } |
316 | if (s->fh) { |
317 | SvREFCNT_dec(s->fh); |
318 | s->fh = Nullsv; |
319 | s->io = NULL; |
320 | } |
321 | if (s->obj) { |
322 | SvREFCNT_dec(s->obj); |
323 | s->obj = Nullsv; |
324 | } |
325 | return 0; |
e7a1fdd7 |
326 | } |
327 | |
328 | IV |
fc040538 |
329 | PerlIOVia_close(pTHX_ PerlIO * f) |
e7a1fdd7 |
330 | { |
fc040538 |
331 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
332 | IV code = PerlIOBase_close(aTHX_ f); |
333 | SV *result = |
334 | PerlIOVia_method(aTHX_ f, MYMethod(CLOSE), G_SCALAR, Nullsv); |
335 | if (result && SvIV(result) != 0) |
336 | code = SvIV(result); |
337 | PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); |
338 | return code; |
e7a1fdd7 |
339 | } |
340 | |
341 | IV |
fc040538 |
342 | PerlIOVia_fileno(pTHX_ PerlIO * f) |
e7a1fdd7 |
343 | { |
fc040538 |
344 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
345 | SV *result = |
346 | PerlIOVia_method(aTHX_ f, MYMethod(FILENO), G_SCALAR, Nullsv); |
347 | return (result) ? SvIV(result) : PerlIO_fileno(PerlIONext(f)); |
e7a1fdd7 |
348 | } |
349 | |
350 | IV |
fc040538 |
351 | PerlIOVia_binmode(pTHX_ PerlIO * f) |
86e05cf2 |
352 | { |
fc040538 |
353 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
354 | SV *result = |
355 | PerlIOVia_method(aTHX_ f, MYMethod(BINMODE), G_SCALAR, Nullsv); |
356 | if (!result || !SvOK(result)) { |
357 | PerlIO_pop(aTHX_ f); |
358 | return 0; |
359 | } |
360 | return SvIV(result); |
86e05cf2 |
361 | } |
362 | |
6efa4722 |
363 | IV |
fc040538 |
364 | PerlIOVia_seek(pTHX_ PerlIO * f, Off_t offset, int whence) |
e7a1fdd7 |
365 | { |
fc040538 |
366 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
4a9d6100 |
367 | SV *offsv = sv_2mortal(sizeof(Off_t) > sizeof(IV) |
368 | ? newSVnv((NV)offset) : newSViv((IV)offset)); |
fc040538 |
369 | SV *whsv = sv_2mortal(newSViv(whence)); |
370 | SV *result = |
371 | PerlIOVia_method(aTHX_ f, MYMethod(SEEK), G_SCALAR, offsv, whsv, |
372 | Nullsv); |
b6290011 |
373 | #if Off_t_size == 8 && defined(CONDOP_SIZE) && CONDOP_SIZE < Off_t_size |
374 | if (result) |
375 | return (Off_t) SvIV(result); |
376 | else |
377 | return (Off_t) -1; |
378 | #else |
fc040538 |
379 | return (result) ? SvIV(result) : -1; |
b6290011 |
380 | #endif |
e7a1fdd7 |
381 | } |
382 | |
383 | Off_t |
fc040538 |
384 | PerlIOVia_tell(pTHX_ PerlIO * f) |
e7a1fdd7 |
385 | { |
fc040538 |
386 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
387 | SV *result = |
388 | PerlIOVia_method(aTHX_ f, MYMethod(TELL), G_SCALAR, Nullsv); |
4a9d6100 |
389 | return (result) |
390 | ? (SvNOK(result) ? (Off_t)SvNV(result) : (Off_t)SvIV(result)) |
391 | : (Off_t) - 1; |
e7a1fdd7 |
392 | } |
393 | |
394 | SSize_t |
fc040538 |
395 | PerlIOVia_unread(pTHX_ PerlIO * f, const void *vbuf, Size_t count) |
e7a1fdd7 |
396 | { |
fc040538 |
397 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
398 | SV *buf = sv_2mortal(newSVpvn((char *) vbuf, count)); |
399 | SV *result = |
400 | PerlIOVia_method(aTHX_ f, MYMethod(UNREAD), G_SCALAR, buf, Nullsv); |
401 | if (result) |
402 | return (SSize_t) SvIV(result); |
403 | else { |
404 | return PerlIOBase_unread(aTHX_ f, vbuf, count); |
405 | } |
e7a1fdd7 |
406 | } |
407 | |
408 | SSize_t |
fc040538 |
409 | PerlIOVia_read(pTHX_ PerlIO * f, void *vbuf, Size_t count) |
e7a1fdd7 |
410 | { |
fc040538 |
411 | SSize_t rd = 0; |
412 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
413 | if (PerlIOBase(f)->flags & PERLIO_F_FASTGETS) { |
414 | rd = PerlIOBase_read(aTHX_ f, vbuf, count); |
415 | } |
416 | else { |
417 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
418 | SV *buf = sv_2mortal(newSV(count)); |
419 | SV *n = sv_2mortal(newSViv(count)); |
420 | SV *result = |
421 | PerlIOVia_method(aTHX_ f, MYMethod(READ), G_SCALAR, buf, n, |
422 | Nullsv); |
423 | if (result) { |
424 | rd = (SSize_t) SvIV(result); |
425 | Move(SvPVX(buf), vbuf, rd, char); |
426 | return rd; |
427 | } |
428 | } |
e7a1fdd7 |
429 | } |
fc040538 |
430 | return rd; |
e7a1fdd7 |
431 | } |
432 | |
433 | SSize_t |
fc040538 |
434 | PerlIOVia_write(pTHX_ PerlIO * f, const void *vbuf, Size_t count) |
e7a1fdd7 |
435 | { |
fc040538 |
436 | if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { |
437 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
438 | SV *buf = newSVpvn((char *) vbuf, count); |
439 | SV *result = |
440 | PerlIOVia_method(aTHX_ f, MYMethod(WRITE), G_SCALAR, buf, |
441 | Nullsv); |
442 | SvREFCNT_dec(buf); |
443 | if (result) |
444 | return (SSize_t) SvIV(result); |
445 | return -1; |
446 | } |
447 | return 0; |
e7a1fdd7 |
448 | } |
449 | |
450 | IV |
fc040538 |
451 | PerlIOVia_fill(pTHX_ PerlIO * f) |
e7a1fdd7 |
452 | { |
fc040538 |
453 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
454 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
455 | SV *result = |
456 | PerlIOVia_method(aTHX_ f, MYMethod(FILL), G_SCALAR, Nullsv); |
457 | if (s->var) { |
458 | SvREFCNT_dec(s->var); |
459 | s->var = Nullsv; |
460 | } |
461 | if (result && SvOK(result)) { |
462 | STRLEN len = 0; |
7248df0a |
463 | const char *p = SvPV(result, len); |
fc040538 |
464 | s->var = newSVpvn(p, len); |
465 | s->cnt = SvCUR(s->var); |
466 | return 0; |
467 | } |
468 | else |
469 | PerlIOBase(f)->flags |= PERLIO_F_EOF; |
e7a1fdd7 |
470 | } |
fc040538 |
471 | return -1; |
e7a1fdd7 |
472 | } |
473 | |
474 | IV |
fc040538 |
475 | PerlIOVia_flush(pTHX_ PerlIO * f) |
e7a1fdd7 |
476 | { |
fc040538 |
477 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
478 | SV *result = |
479 | PerlIOVia_method(aTHX_ f, MYMethod(FLUSH), G_SCALAR, Nullsv); |
480 | if (s->var && s->cnt > 0) { |
481 | SvREFCNT_dec(s->var); |
482 | s->var = Nullsv; |
483 | } |
484 | return (result) ? SvIV(result) : 0; |
e7a1fdd7 |
485 | } |
486 | |
487 | STDCHAR * |
fc040538 |
488 | PerlIOVia_get_base(pTHX_ PerlIO * f) |
e7a1fdd7 |
489 | { |
fc040538 |
490 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
491 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
492 | if (s->var) { |
493 | return (STDCHAR *) SvPVX(s->var); |
494 | } |
e7a1fdd7 |
495 | } |
9849c14c |
496 | return (STDCHAR *) NULL; |
e7a1fdd7 |
497 | } |
498 | |
499 | STDCHAR * |
fc040538 |
500 | PerlIOVia_get_ptr(pTHX_ PerlIO * f) |
e7a1fdd7 |
501 | { |
fc040538 |
502 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
503 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
504 | if (s->var) { |
505 | STDCHAR *p = (STDCHAR *) (SvEND(s->var) - s->cnt); |
506 | return p; |
507 | } |
e7a1fdd7 |
508 | } |
9849c14c |
509 | return (STDCHAR *) NULL; |
e7a1fdd7 |
510 | } |
511 | |
512 | SSize_t |
fc040538 |
513 | PerlIOVia_get_cnt(pTHX_ PerlIO * f) |
e7a1fdd7 |
514 | { |
fc040538 |
515 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
516 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
517 | if (s->var) { |
518 | return s->cnt; |
519 | } |
e7a1fdd7 |
520 | } |
fc040538 |
521 | return 0; |
e7a1fdd7 |
522 | } |
523 | |
524 | Size_t |
fc040538 |
525 | PerlIOVia_bufsiz(pTHX_ PerlIO * f) |
e7a1fdd7 |
526 | { |
fc040538 |
527 | if (PerlIOBase(f)->flags & PERLIO_F_CANREAD) { |
528 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
529 | if (s->var) |
530 | return SvCUR(s->var); |
531 | } |
532 | return 0; |
e7a1fdd7 |
533 | } |
534 | |
535 | void |
fc040538 |
536 | PerlIOVia_set_ptrcnt(pTHX_ PerlIO * f, STDCHAR * ptr, SSize_t cnt) |
e7a1fdd7 |
537 | { |
fc040538 |
538 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
539 | s->cnt = cnt; |
e7a1fdd7 |
540 | } |
541 | |
542 | void |
fc040538 |
543 | PerlIOVia_setlinebuf(pTHX_ PerlIO * f) |
e7a1fdd7 |
544 | { |
fc040538 |
545 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
546 | PerlIOVia_method(aTHX_ f, MYMethod(SETLINEBUF), G_VOID, Nullsv); |
547 | PerlIOBase_setlinebuf(aTHX_ f); |
e7a1fdd7 |
548 | } |
549 | |
550 | void |
fc040538 |
551 | PerlIOVia_clearerr(pTHX_ PerlIO * f) |
e7a1fdd7 |
552 | { |
fc040538 |
553 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
554 | PerlIOVia_method(aTHX_ f, MYMethod(CLEARERR), G_VOID, Nullsv); |
555 | PerlIOBase_clearerr(aTHX_ f); |
e7a1fdd7 |
556 | } |
557 | |
c7997937 |
558 | IV |
fc040538 |
559 | PerlIOVia_error(pTHX_ PerlIO * f) |
e7a1fdd7 |
560 | { |
fc040538 |
561 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
562 | SV *result = |
563 | PerlIOVia_method(aTHX_ f, "ERROR", &s->mERROR, G_SCALAR, Nullsv); |
564 | return (result) ? SvIV(result) : PerlIOBase_error(aTHX_ f); |
e7a1fdd7 |
565 | } |
566 | |
567 | IV |
fc040538 |
568 | PerlIOVia_eof(pTHX_ PerlIO * f) |
e7a1fdd7 |
569 | { |
fc040538 |
570 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
571 | SV *result = |
572 | PerlIOVia_method(aTHX_ f, "EOF", &s->mEOF, G_SCALAR, Nullsv); |
573 | return (result) ? SvIV(result) : PerlIOBase_eof(aTHX_ f); |
e7a1fdd7 |
574 | } |
575 | |
ecdeb87c |
576 | SV * |
fc040538 |
577 | PerlIOVia_getarg(pTHX_ PerlIO * f, CLONE_PARAMS * param, int flags) |
ecdeb87c |
578 | { |
fc040538 |
579 | PerlIOVia *s = PerlIOSelf(f, PerlIOVia); |
580 | return PerlIOVia_method(aTHX_ f, MYMethod(GETARG), G_SCALAR, Nullsv); |
ecdeb87c |
581 | } |
582 | |
8cf8f3d1 |
583 | PerlIO * |
fc040538 |
584 | PerlIOVia_dup(pTHX_ PerlIO * f, PerlIO * o, CLONE_PARAMS * param, |
585 | int flags) |
8cf8f3d1 |
586 | { |
fc040538 |
587 | if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { |
588 | /* Most of the fields will lazily set themselves up as needed |
589 | stash and obj have been set up by the implied push |
590 | */ |
591 | } |
592 | return f; |
8cf8f3d1 |
593 | } |
594 | |
fc040538 |
595 | |
596 | |
27da23d5 |
597 | PERLIO_FUNCS_DECL(PerlIO_object) = { |
2dc2558e |
598 | sizeof(PerlIO_funcs), |
e934609f |
599 | "via", |
e7a1fdd7 |
600 | sizeof(PerlIOVia), |
601 | PERLIO_K_BUFFERED|PERLIO_K_DESTRUCT, |
602 | PerlIOVia_pushed, |
603 | PerlIOVia_popped, |
d9dac8cd |
604 | PerlIOVia_open, /* NULL, */ |
86e05cf2 |
605 | PerlIOVia_binmode, /* NULL, */ |
e7a1fdd7 |
606 | PerlIOVia_getarg, |
607 | PerlIOVia_fileno, |
8cf8f3d1 |
608 | PerlIOVia_dup, |
e7a1fdd7 |
609 | PerlIOVia_read, |
610 | PerlIOVia_unread, |
611 | PerlIOVia_write, |
612 | PerlIOVia_seek, |
613 | PerlIOVia_tell, |
614 | PerlIOVia_close, |
615 | PerlIOVia_flush, |
616 | PerlIOVia_fill, |
617 | PerlIOVia_eof, |
618 | PerlIOVia_error, |
619 | PerlIOVia_clearerr, |
620 | PerlIOVia_setlinebuf, |
621 | PerlIOVia_get_base, |
622 | PerlIOVia_bufsiz, |
623 | PerlIOVia_get_ptr, |
624 | PerlIOVia_get_cnt, |
625 | PerlIOVia_set_ptrcnt, |
626 | }; |
627 | |
628 | |
629 | #endif /* Layers available */ |
630 | |
e934609f |
631 | MODULE = PerlIO::via PACKAGE = PerlIO::via |
e7a1fdd7 |
632 | PROTOTYPES: ENABLE; |
633 | |
634 | BOOT: |
635 | { |
636 | #ifdef PERLIO_LAYERS |
27da23d5 |
637 | PerlIO_define_layer(aTHX_ PERLIO_FUNCS_CAST(&PerlIO_object)); |
e7a1fdd7 |
638 | #endif |
639 | } |
640 | |
fc040538 |
641 | |
30ef3321 |
642 | |
643 | |
644 | |