2 * perlio.c Copyright (c) 1996-2001, Nick Ing-Simmons You may distribute
3 * under the terms of either the GNU General Public License or the
4 * Artistic License, as specified in the README file.
8 * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get
9 * at the dispatch tables, even when we do not need it for other reasons.
10 * Invent a dSYS macro to abstract this out
12 #ifdef PERL_IMPLICIT_SYS
25 #define PERLIO_NOT_STDIO 0
26 #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO)
32 * This file provides those parts of PerlIO abstraction
33 * which are not #defined in perlio.h.
34 * Which these are depends on various Configure #ifdef's
38 #define PERL_IN_PERLIO_C
43 #undef PerlMemShared_calloc
44 #define PerlMemShared_calloc(x,y) calloc(x,y)
45 #undef PerlMemShared_free
46 #define PerlMemShared_free(x) free(x)
49 perlsio_binmode(FILE *fp, int iotype, int mode)
52 * This used to be contents of do_binmode in doio.c
55 # if defined(atarist) || defined(__MINT__)
58 ((FILE *) fp)->_flag |= _IOBIN;
60 ((FILE *) fp)->_flag &= ~_IOBIN;
67 if (PerlLIO_setmode(fp, mode) != -1) {
69 if (PerlLIO_setmode(fileno(fp), mode) != -1) {
71 # if defined(WIN32) && defined(__BORLANDC__)
73 * The translation mode of the stream is maintained independent of
74 * the translation mode of the fd in the Borland RTL (heavy
75 * digging through their runtime sources reveal). User has to set
76 * the mode explicitly for the stream (though they don't document
77 * this anywhere). GSAR 97-5-24
91 # if defined(USEMYBINMODE)
92 if (my_binmode(fp, iotype, mode) != FALSE)
103 #define O_ACCMODE 3 /* Assume traditional implementation */
107 PerlIO_intmode2str(int rawmode, char *mode, int *writing)
109 int result = rawmode & O_ACCMODE;
114 ptype = IoTYPE_RDONLY;
117 ptype = IoTYPE_WRONLY;
125 *writing = (result != O_RDONLY);
127 if (result == O_RDONLY) {
131 else if (rawmode & O_APPEND) {
133 if (result != O_WRONLY)
138 if (result == O_WRONLY)
145 if (rawmode & O_BINARY)
151 #ifndef PERLIO_LAYERS
153 PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
155 if (!names || !*names || strEQ(names, ":crlf") || strEQ(names, ":raw")) {
158 Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names);
166 PerlIO_destruct(pTHX)
171 PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names)
176 return perlsio_binmode(fp, iotype, mode);
181 PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param)
184 int fd = PerlLIO_dup(PerlIO_fileno(f));
187 int omode = fcntl(fd, F_GETFL);
188 PerlIO_intmode2str(omode,mode,NULL);
189 /* the r+ is a hack */
190 return PerlIO_fdopen(fd, mode);
195 SETERRNO(EBADF, SS$_IVCHAN);
202 * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries
206 PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd,
207 int imode, int perm, PerlIO *old, int narg, SV **args)
210 if (*args == &PL_sv_undef)
211 return PerlIO_tmpfile();
213 char *name = SvPV_nolen(*args);
215 fd = PerlLIO_open3(name, imode, perm);
217 return PerlIO_fdopen(fd, (char *) mode + 1);
220 return PerlIO_reopen(name, mode, old);
223 return PerlIO_open(name, mode);
228 return PerlIO_fdopen(fd, (char *) mode);
233 XS(XS_PerlIO__Layer__find)
237 Perl_croak(aTHX_ "Usage class->find(name[,load])");
239 char *name = SvPV_nolen(ST(1));
240 ST(0) = (strEQ(name, "crlf")
241 || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef;
248 Perl_boot_core_PerlIO(pTHX)
250 newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__);
256 #ifdef PERLIO_IS_STDIO
262 * Does nothing (yet) except force this file to be included in perl
263 * binary. That allows this file to force inclusion of other functions
264 * that may be required by loadable extensions e.g. for
265 * FileHandle::tmpfile
269 #undef PerlIO_tmpfile
276 #else /* PERLIO_IS_STDIO */
284 * This section is just to make sure these functions get pulled in from
288 #undef PerlIO_tmpfile
299 * Force this file to be included in perl binary. Which allows this
300 * file to force inclusion of other functions that may be required by
301 * loadable extensions e.g. for FileHandle::tmpfile
305 * Hack sfio does its own 'autoflush' on stdout in common cases. Flush
306 * results in a lot of lseek()s to regular files and lot of small
309 sfset(sfstdout, SF_SHARE, 0);
313 PerlIO_importFILE(FILE *stdio, int fl)
315 int fd = fileno(stdio);
316 PerlIO *r = PerlIO_fdopen(fd, "r+");
321 PerlIO_findFILE(PerlIO *pio)
323 int fd = PerlIO_fileno(pio);
324 FILE *f = fdopen(fd, "r+");
326 if (!f && errno == EINVAL)
328 if (!f && errno == EINVAL)
335 /*======================================================================================*/
337 * Implement all the PerlIO interface ourselves.
343 * We _MUST_ have <unistd.h> if we are using lseek() and may have large
350 #include <sys/mman.h>
354 void PerlIO_debug(const char *fmt, ...)
355 __attribute__ ((format(__printf__, 1, 2)));
358 PerlIO_debug(const char *fmt, ...)
365 char *s = PerlEnv_getenv("PERLIO_DEBUG");
367 dbg = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666);
374 /* Use fixed buffer as sv_catpvf etc. needs SVs */
378 s = CopFILE(PL_curcop);
381 sprintf(buffer, "%s:%" IVdf " ", s, (IV) CopLINE(PL_curcop));
382 len = strlen(buffer);
383 vsprintf(buffer+len, fmt, ap);
384 PerlLIO_write(dbg, buffer, strlen(buffer));
386 SV *sv = newSVpvn("", 0);
389 s = CopFILE(PL_curcop);
392 Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s,
393 (IV) CopLINE(PL_curcop));
394 Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap);
397 PerlLIO_write(dbg, s, len);
404 /*--------------------------------------------------------------------------------------*/
407 * Inner level routines
411 * Table of pointers to the PerlIO structs (malloc'ed)
413 PerlIO *_perlio = NULL;
414 #define PERLIO_TABLE_SIZE 64
419 PerlIO_allocate(pTHX)
422 * Find a free slot in the table, allocating new table as necessary
427 while ((f = *last)) {
429 last = (PerlIO **) (f);
430 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
436 f = PerlMemShared_calloc(PERLIO_TABLE_SIZE, sizeof(PerlIO));
445 PerlIO_cleantable(pTHX_ PerlIO **tablep)
447 PerlIO *table = *tablep;
450 PerlIO_cleantable(aTHX_(PerlIO **) & (table[0]));
451 for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) {
452 PerlIO *f = table + i;
457 PerlMemShared_free(table);
462 PerlIO_list_t *PerlIO_known_layers;
463 PerlIO_list_t *PerlIO_def_layerlist;
466 PerlIO_list_alloc(void)
469 Newz('L', list, 1, PerlIO_list_t);
475 PerlIO_list_free(PerlIO_list_t *list)
478 if (--list->refcnt == 0) {
482 for (i = 0; i < list->cur; i++) {
483 if (list->array[i].arg)
484 SvREFCNT_dec(list->array[i].arg);
486 Safefree(list->array);
494 PerlIO_list_push(PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg)
498 if (list->cur >= list->len) {
501 Renew(list->array, list->len, PerlIO_pair_t);
503 New('l', list->array, list->len, PerlIO_pair_t);
505 p = &(list->array[list->cur++]);
507 if ((p->arg = arg)) {
514 PerlIO_cleanup_layers(pTHX_ void *data)
517 PerlIO_known_layers = Nullhv;
518 PerlIO_def_layerlist = Nullav;
526 PerlIO_cleantable(aTHX_ & _perlio);
530 PerlIO_destruct(pTHX)
532 PerlIO **table = &_perlio;
534 while ((f = *table)) {
536 table = (PerlIO **) (f++);
537 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
541 if (l->tab->kind & PERLIO_K_DESTRUCT) {
542 PerlIO_debug("Destruct popping %s\n", l->tab->name);
556 PerlIO_pop(pTHX_ PerlIO *f)
560 PerlIO_debug("PerlIO_pop f=%p %s\n", f, l->tab->name);
561 if (l->tab->Popped) {
563 * If popped returns non-zero do not free its layer structure
564 * it has either done so itself, or it is shared and still in
567 if ((*l->tab->Popped) (f) != 0)
571 PerlMemShared_free(l);
575 /*--------------------------------------------------------------------------------------*/
577 * XS Interface for perl code
581 PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load)
584 if ((SSize_t) len <= 0)
586 for (i = 0; i < PerlIO_known_layers->cur; i++) {
587 PerlIO_funcs *f = PerlIO_known_layers->array[i].funcs;
588 if (memEQ(f->name, name, len)) {
589 PerlIO_debug("%.*s => %p\n", (int) len, name, f);
593 if (load && PL_subname && PerlIO_def_layerlist
594 && PerlIO_def_layerlist->cur >= 2) {
595 SV *pkgsv = newSVpvn("PerlIO", 6);
596 SV *layer = newSVpvn(name, len);
599 * The two SVs are magically freed by load_module
601 Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv);
603 return PerlIO_find_layer(aTHX_ name, len, 0);
605 PerlIO_debug("Cannot find %.*s\n", (int) len, name);
609 #ifdef USE_ATTRIBUTES_FOR_PERLIO
612 perlio_mg_set(pTHX_ SV *sv, MAGIC *mg)
615 IO *io = GvIOn((GV *) SvRV(sv));
616 PerlIO *ifp = IoIFP(io);
617 PerlIO *ofp = IoOFP(io);
618 Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp);
624 perlio_mg_get(pTHX_ SV *sv, MAGIC *mg)
627 IO *io = GvIOn((GV *) SvRV(sv));
628 PerlIO *ifp = IoIFP(io);
629 PerlIO *ofp = IoOFP(io);
630 Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp);
636 perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg)
638 Perl_warn(aTHX_ "clear %" SVf, sv);
643 perlio_mg_free(pTHX_ SV *sv, MAGIC *mg)
645 Perl_warn(aTHX_ "free %" SVf, sv);
649 MGVTBL perlio_vtab = {
657 XS(XS_io_MODIFY_SCALAR_ATTRIBUTES)
660 SV *sv = SvRV(ST(1));
665 sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0);
667 mg = mg_find(sv, PERL_MAGIC_ext);
668 mg->mg_virtual = &perlio_vtab;
670 Perl_warn(aTHX_ "attrib %" SVf, sv);
671 for (i = 2; i < items; i++) {
673 const char *name = SvPV(ST(i), len);
674 SV *layer = PerlIO_find_layer(aTHX_ name, len, 1);
676 av_push(av, SvREFCNT_inc(layer));
687 #endif /* USE_ATTIBUTES_FOR_PERLIO */
690 PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab)
692 HV *stash = gv_stashpv("PerlIO::Layer", TRUE);
693 SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash);
697 XS(XS_PerlIO__Layer__find)
701 Perl_croak(aTHX_ "Usage class->find(name[,load])");
704 char *name = SvPV(ST(1), len);
705 bool load = (items > 2) ? SvTRUE(ST(2)) : 0;
706 PerlIO_funcs *layer = PerlIO_find_layer(aTHX_ name, len, load);
708 (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) :
715 PerlIO_define_layer(pTHX_ PerlIO_funcs *tab)
717 if (!PerlIO_known_layers)
718 PerlIO_known_layers = PerlIO_list_alloc();
719 PerlIO_list_push(PerlIO_known_layers, tab, Nullsv);
720 PerlIO_debug("define %s %p\n", tab->name, tab);
724 PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names)
727 const char *s = names;
729 while (isSPACE(*s) || *s == ':')
734 const char *as = Nullch;
736 if (!isIDFIRST(*s)) {
738 * Message is consistent with how attribute lists are
739 * passed. Even though this means "foo : : bar" is
740 * seen as an invalid separator character.
742 char q = ((*s == '\'') ? '"' : '\'');
744 "perlio: invalid separator character %c%c%c in layer specification list",
750 } while (isALNUM(*e));
766 * It's a nul terminated string, not allowed
767 * to \ the terminating null. Anything other
768 * character is passed over.
779 "perlio: argument list not closed for layer \"%.*s\"",
791 PerlIO_funcs *layer =
792 PerlIO_find_layer(aTHX_ s, llen, 1);
794 PerlIO_list_push(av, layer,
800 Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",
813 PerlIO_default_buffer(pTHX_ PerlIO_list_t *av)
815 PerlIO_funcs *tab = &PerlIO_perlio;
816 if (O_BINARY != O_TEXT) {
820 if (PerlIO_stdio.Set_ptrcnt) {
824 PerlIO_debug("Pushing %s\n", tab->name);
825 PerlIO_list_push(av, PerlIO_find_layer(aTHX_ tab->name, 0, 0),
830 PerlIO_arg_fetch(PerlIO_list_t *av, IV n)
832 return av->array[n].arg;
836 PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def)
838 if (n >= 0 && n < av->cur) {
839 PerlIO_debug("Layer %" IVdf " is %s\n", n,
840 av->array[n].funcs->name);
841 return av->array[n].funcs;
844 Perl_croak(aTHX_ "panic: PerlIO layer array corrupt");
849 PerlIO_default_layers(pTHX)
851 if (!PerlIO_def_layerlist) {
852 const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO");
853 PerlIO_funcs *osLayer = &PerlIO_unix;
854 PerlIO_def_layerlist = PerlIO_list_alloc();
855 PerlIO_define_layer(aTHX_ & PerlIO_unix);
856 #if defined(WIN32) && !defined(UNDER_CE)
857 PerlIO_define_layer(aTHX_ & PerlIO_win32);
859 osLayer = &PerlIO_win32;
862 PerlIO_define_layer(aTHX_ & PerlIO_raw);
863 PerlIO_define_layer(aTHX_ & PerlIO_perlio);
864 PerlIO_define_layer(aTHX_ & PerlIO_stdio);
865 PerlIO_define_layer(aTHX_ & PerlIO_crlf);
867 PerlIO_define_layer(aTHX_ & PerlIO_mmap);
869 PerlIO_define_layer(aTHX_ & PerlIO_utf8);
870 PerlIO_define_layer(aTHX_ & PerlIO_byte);
871 PerlIO_list_push(PerlIO_def_layerlist,
872 PerlIO_find_layer(aTHX_ osLayer->name, 0, 0),
875 PerlIO_parse_layers(aTHX_ PerlIO_def_layerlist, s);
878 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
881 if (PerlIO_def_layerlist->cur < 2) {
882 PerlIO_default_buffer(aTHX_ PerlIO_def_layerlist);
884 return PerlIO_def_layerlist;
888 Perl_boot_core_PerlIO(pTHX)
890 #ifdef USE_ATTRIBUTES_FOR_PERLIO
891 newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES,
894 newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__);
898 PerlIO_default_layer(pTHX_ I32 n)
900 PerlIO_list_t *av = PerlIO_default_layers(aTHX);
903 return PerlIO_layer_fetch(aTHX_ av, n, &PerlIO_stdio);
906 #define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1)
907 #define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0)
910 PerlIO_stdstreams(pTHX)
913 PerlIO_allocate(aTHX);
914 PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT);
915 PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT);
916 PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT);
921 PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, const char *mode, SV *arg)
924 l = PerlMemShared_calloc(tab->size, sizeof(char));
926 Zero(l, tab->size, char);
930 PerlIO_debug("PerlIO_push f=%p %s %s %p\n", f, tab->name,
931 (mode) ? mode : "(Null)", arg);
932 if ((*l->tab->Pushed) (f, mode, arg) != 0) {
941 PerlIOPop_pushed(PerlIO *f, const char *mode, SV *arg)
954 PerlIORaw_pushed(PerlIO *f, const char *mode, SV *arg)
957 * Remove the dummy layer
962 * Pop back to bottom layer
966 while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) {
967 if (*PerlIONext(f)) {
972 * Nothing bellow - push unix on top then remove it
974 if (PerlIO_push(aTHX_ f, PerlIO_default_btm(), mode, arg)) {
975 PerlIO_pop(aTHX_ PerlIONext(f));
980 PerlIO_debug(":raw f=%p :%s\n", f, PerlIOBase(f)->tab->name);
987 PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode,
988 PerlIO_list_t *layers, IV n)
990 IV max = layers->cur;
993 PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL);
995 if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) {
1006 PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
1010 PerlIO_list_t *layers = PerlIO_list_alloc();
1011 code = PerlIO_parse_layers(aTHX_ layers, names);
1013 code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0);
1015 PerlIO_list_free(layers);
1021 /*--------------------------------------------------------------------------------------*/
1023 * Given the abstraction above the public API functions
1027 PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names)
1029 PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n",
1030 f, PerlIOBase(f)->tab->name, iotype, mode,
1031 (names) ? names : "(Null)");
1033 if (!names && (O_TEXT != O_BINARY && (mode & O_BINARY))) {
1036 if (PerlIOBase(top)->tab == &PerlIO_crlf) {
1037 PerlIOBase(top)->flags &= ~PERLIO_F_CRLF;
1040 top = PerlIONext(top);
1044 return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE;
1047 #undef PerlIO__close
1049 PerlIO__close(PerlIO *f)
1052 return (*PerlIOBase(f)->tab->Close) (f);
1054 SETERRNO(EBADF, SS$_IVCHAN);
1059 #undef PerlIO_fdupopen
1061 PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param)
1064 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1066 PerlIO_debug("fdupopen f=%p param=%p\n",f,param);
1067 new = (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX),f,param);
1071 SETERRNO(EBADF, SS$_IVCHAN);
1078 PerlIO_close(PerlIO *f)
1083 code = (*PerlIOBase(f)->tab->Close) (f);
1085 PerlIO_pop(aTHX_ f);
1091 #undef PerlIO_fileno
1093 PerlIO_fileno(PerlIO *f)
1096 return (*PerlIOBase(f)->tab->Fileno) (f);
1098 SETERRNO(EBADF, SS$_IVCHAN);
1104 PerlIO_context_layers(pTHX_ const char *mode)
1106 const char *type = NULL;
1108 * Need to supply default layer info from open.pm
1111 SV *layers = PL_curcop->cop_io;
1114 type = SvPV(layers, len);
1115 if (type && mode[0] != 'r') {
1117 * Skip to write part
1119 const char *s = strchr(type, 0);
1120 if (s && (s - type) < len) {
1129 static PerlIO_funcs *
1130 PerlIO_layer_from_ref(pTHX_ SV *sv)
1133 * For any scalar type load the handler which is bundled with perl
1135 if (SvTYPE(sv) < SVt_PVAV)
1136 return PerlIO_find_layer(aTHX_ "Scalar", 6, 1);
1139 * For other types allow if layer is known but don't try and load it
1141 switch (SvTYPE(sv)) {
1143 return PerlIO_find_layer(aTHX_ "Array", 5, 0);
1145 return PerlIO_find_layer(aTHX_ "Hash", 4, 0);
1147 return PerlIO_find_layer(aTHX_ "Code", 4, 0);
1149 return PerlIO_find_layer(aTHX_ "Glob", 4, 0);
1155 PerlIO_resolve_layers(pTHX_ const char *layers,
1156 const char *mode, int narg, SV **args)
1158 PerlIO_list_t *def = PerlIO_default_layers(aTHX);
1161 PerlIO_stdstreams(aTHX);
1165 * If it is a reference but not an object see if we have a handler
1168 if (SvROK(arg) && !sv_isobject(arg)) {
1169 PerlIO_funcs *handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg));
1171 def = PerlIO_list_alloc();
1172 PerlIO_list_push(def, handler, &PL_sv_undef);
1176 * Don't fail if handler cannot be found :Via(...) etc. may do
1177 * something sensible else we will just stringfy and open
1183 layers = PerlIO_context_layers(aTHX_ mode);
1184 if (layers && *layers) {
1188 av = PerlIO_list_alloc();
1189 for (i = 0; i < def->cur; i++) {
1190 PerlIO_list_push(av, def->array[i].funcs,
1197 PerlIO_parse_layers(aTHX_ av, layers);
1208 PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd,
1209 int imode, int perm, PerlIO *f, int narg, SV **args)
1211 if (!f && narg == 1 && *args == &PL_sv_undef) {
1212 if ((f = PerlIO_tmpfile())) {
1214 layers = PerlIO_context_layers(aTHX_ mode);
1215 if (layers && *layers)
1216 PerlIO_apply_layers(aTHX_ f, mode, layers);
1220 PerlIO_list_t *layera = NULL;
1222 PerlIO_funcs *tab = NULL;
1225 * This is "reopen" - it is not tested as perl does not use it
1229 layera = PerlIO_list_alloc();
1232 (l->tab->Getarg) ? (*l->tab->
1233 Getarg) (&l) : &PL_sv_undef;
1234 PerlIO_list_push(layera, l->tab, arg);
1235 l = *PerlIONext(&l);
1239 layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args);
1242 * Start at "top" of layer stack
1244 n = layera->cur - 1;
1246 PerlIO_funcs *t = PerlIO_layer_fetch(aTHX_ layera, n, NULL);
1255 * Found that layer 'n' can do opens - call it
1257 PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n",
1258 tab->name, layers, mode, fd, imode, perm, f, narg,
1260 f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm,
1263 if (n + 1 < layera->cur) {
1265 * More layers above the one that we used to open -
1268 if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1)
1275 PerlIO_list_free(layera);
1281 #undef PerlIO_fdopen
1283 PerlIO_fdopen(int fd, const char *mode)
1286 return PerlIO_openn(aTHX_ Nullch, mode, fd, 0, 0, NULL, 0, NULL);
1291 PerlIO_open(const char *path, const char *mode)
1294 SV *name = sv_2mortal(newSVpvn(path, strlen(path)));
1295 return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, NULL, 1, &name);
1298 #undef PerlIO_reopen
1300 PerlIO_reopen(const char *path, const char *mode, PerlIO *f)
1303 SV *name = sv_2mortal(newSVpvn(path, strlen(path)));
1304 return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, f, 1, &name);
1309 PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
1312 return (*PerlIOBase(f)->tab->Read) (f, vbuf, count);
1314 SETERRNO(EBADF, SS$_IVCHAN);
1319 #undef PerlIO_unread
1321 PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count)
1324 return (*PerlIOBase(f)->tab->Unread) (f, vbuf, count);
1326 SETERRNO(EBADF, SS$_IVCHAN);
1333 PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
1336 return (*PerlIOBase(f)->tab->Write) (f, vbuf, count);
1338 SETERRNO(EBADF, SS$_IVCHAN);
1345 PerlIO_seek(PerlIO *f, Off_t offset, int whence)
1348 return (*PerlIOBase(f)->tab->Seek) (f, offset, whence);
1350 SETERRNO(EBADF, SS$_IVCHAN);
1357 PerlIO_tell(PerlIO *f)
1360 return (*PerlIOBase(f)->tab->Tell) (f);
1362 SETERRNO(EBADF, SS$_IVCHAN);
1369 PerlIO_flush(PerlIO *f)
1373 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1374 if (tab && tab->Flush) {
1375 return (*tab->Flush) (f);
1378 PerlIO_debug("Cannot flush f=%p :%s\n", f, tab->name);
1379 SETERRNO(EBADF, SS$_IVCHAN);
1384 PerlIO_debug("Cannot flush f=%p\n", f);
1385 SETERRNO(EBADF, SS$_IVCHAN);
1391 * Is it good API design to do flush-all on NULL, a potentially
1392 * errorneous input? Maybe some magical value (PerlIO*
1393 * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar
1394 * things on fflush(NULL), but should we be bound by their design
1397 PerlIO **table = &_perlio;
1399 while ((f = *table)) {
1401 table = (PerlIO **) (f++);
1402 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
1403 if (*f && PerlIO_flush(f) != 0)
1413 PerlIOBase_flush_linebuf()
1415 PerlIO **table = &_perlio;
1417 while ((f = *table)) {
1419 table = (PerlIO **) (f++);
1420 for (i = 1; i < PERLIO_TABLE_SIZE; i++) {
1423 flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE))
1424 == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE))
1433 PerlIO_fill(PerlIO *f)
1436 return (*PerlIOBase(f)->tab->Fill) (f);
1438 SETERRNO(EBADF, SS$_IVCHAN);
1443 #undef PerlIO_isutf8
1445 PerlIO_isutf8(PerlIO *f)
1448 return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0;
1450 SETERRNO(EBADF, SS$_IVCHAN);
1457 PerlIO_eof(PerlIO *f)
1460 return (*PerlIOBase(f)->tab->Eof) (f);
1462 SETERRNO(EBADF, SS$_IVCHAN);
1469 PerlIO_error(PerlIO *f)
1472 return (*PerlIOBase(f)->tab->Error) (f);
1474 SETERRNO(EBADF, SS$_IVCHAN);
1479 #undef PerlIO_clearerr
1481 PerlIO_clearerr(PerlIO *f)
1484 (*PerlIOBase(f)->tab->Clearerr) (f);
1486 SETERRNO(EBADF, SS$_IVCHAN);
1489 #undef PerlIO_setlinebuf
1491 PerlIO_setlinebuf(PerlIO *f)
1494 (*PerlIOBase(f)->tab->Setlinebuf) (f);
1496 SETERRNO(EBADF, SS$_IVCHAN);
1499 #undef PerlIO_has_base
1501 PerlIO_has_base(PerlIO *f)
1504 return (PerlIOBase(f)->tab->Get_base != NULL);
1509 #undef PerlIO_fast_gets
1511 PerlIO_fast_gets(PerlIO *f)
1513 if (f && *f && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) {
1514 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1515 return (tab->Set_ptrcnt != NULL);
1520 #undef PerlIO_has_cntptr
1522 PerlIO_has_cntptr(PerlIO *f)
1525 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1526 return (tab->Get_ptr != NULL && tab->Get_cnt != NULL);
1531 #undef PerlIO_canset_cnt
1533 PerlIO_canset_cnt(PerlIO *f)
1536 PerlIOl *l = PerlIOBase(f);
1537 return (l->tab->Set_ptrcnt != NULL);
1542 #undef PerlIO_get_base
1544 PerlIO_get_base(PerlIO *f)
1547 return (*PerlIOBase(f)->tab->Get_base) (f);
1551 #undef PerlIO_get_bufsiz
1553 PerlIO_get_bufsiz(PerlIO *f)
1556 return (*PerlIOBase(f)->tab->Get_bufsiz) (f);
1560 #undef PerlIO_get_ptr
1562 PerlIO_get_ptr(PerlIO *f)
1564 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1565 if (tab->Get_ptr == NULL)
1567 return (*tab->Get_ptr) (f);
1570 #undef PerlIO_get_cnt
1572 PerlIO_get_cnt(PerlIO *f)
1574 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1575 if (tab->Get_cnt == NULL)
1577 return (*tab->Get_cnt) (f);
1580 #undef PerlIO_set_cnt
1582 PerlIO_set_cnt(PerlIO *f, int cnt)
1584 (*PerlIOBase(f)->tab->Set_ptrcnt) (f, NULL, cnt);
1587 #undef PerlIO_set_ptrcnt
1589 PerlIO_set_ptrcnt(PerlIO *f, STDCHAR * ptr, int cnt)
1591 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1592 if (tab->Set_ptrcnt == NULL) {
1594 Perl_croak(aTHX_ "PerlIO buffer snooping abuse");
1596 (*PerlIOBase(f)->tab->Set_ptrcnt) (f, ptr, cnt);
1599 /*--------------------------------------------------------------------------------------*/
1601 * utf8 and raw dummy layers
1605 PerlIOUtf8_pushed(PerlIO *f, const char *mode, SV *arg)
1607 if (PerlIONext(f)) {
1609 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1610 PerlIO_pop(aTHX_ f);
1611 if (tab->kind & PERLIO_K_UTF8)
1612 PerlIOBase(f)->flags |= PERLIO_F_UTF8;
1614 PerlIOBase(f)->flags &= ~PERLIO_F_UTF8;
1620 PerlIO_funcs PerlIO_utf8 = {
1623 PERLIO_K_DUMMY | PERLIO_F_UTF8,
1641 NULL, /* get_base */
1642 NULL, /* get_bufsiz */
1645 NULL, /* set_ptrcnt */
1648 PerlIO_funcs PerlIO_byte = {
1669 NULL, /* get_base */
1670 NULL, /* get_bufsiz */
1673 NULL, /* set_ptrcnt */
1677 PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
1678 IV n, const char *mode, int fd, int imode, int perm,
1679 PerlIO *old, int narg, SV **args)
1681 PerlIO_funcs *tab = PerlIO_default_btm();
1682 return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
1686 PerlIO_funcs PerlIO_raw = {
1707 NULL, /* get_base */
1708 NULL, /* get_bufsiz */
1711 NULL, /* set_ptrcnt */
1713 /*--------------------------------------------------------------------------------------*/
1714 /*--------------------------------------------------------------------------------------*/
1716 * "Methods" of the "base class"
1720 PerlIOBase_fileno(PerlIO *f)
1722 return PerlIO_fileno(PerlIONext(f));
1726 PerlIO_modestr(PerlIO *f, char *buf)
1729 IV flags = PerlIOBase(f)->flags;
1730 if (flags & PERLIO_F_APPEND) {
1732 if (flags & PERLIO_F_CANREAD) {
1736 else if (flags & PERLIO_F_CANREAD) {
1738 if (flags & PERLIO_F_CANWRITE)
1741 else if (flags & PERLIO_F_CANWRITE) {
1743 if (flags & PERLIO_F_CANREAD) {
1747 #if O_TEXT != O_BINARY
1748 if (!(flags & PERLIO_F_CRLF))
1756 PerlIOBase_pushed(PerlIO *f, const char *mode, SV *arg)
1758 PerlIOl *l = PerlIOBase(f);
1760 const char *omode = mode;
1763 PerlIO_funcs *tab = PerlIOBase(f)->tab;
1764 l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE |
1765 PERLIO_F_TRUNCATE | PERLIO_F_APPEND);
1766 if (tab->Set_ptrcnt != NULL)
1767 l->flags |= PERLIO_F_FASTGETS;
1769 if (*mode == '#' || *mode == 'I')
1773 l->flags |= PERLIO_F_CANREAD;
1776 l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE;
1779 l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE;
1782 SETERRNO(EINVAL, LIB$_INVARG);
1788 l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE;
1791 l->flags &= ~PERLIO_F_CRLF;
1794 l->flags |= PERLIO_F_CRLF;
1797 SETERRNO(EINVAL, LIB$_INVARG);
1804 l->flags |= l->next->flags &
1805 (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE |
1810 PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n",
1811 f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)",
1812 l->flags, PerlIO_modestr(f, temp));
1818 PerlIOBase_popped(PerlIO *f)
1824 PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count)
1828 * Save the position as current head considers it
1830 Off_t old = PerlIO_tell(f);
1832 PerlIO_push(aTHX_ f, &PerlIO_pending, "r", Nullsv);
1833 PerlIOSelf(f, PerlIOBuf)->posn = old;
1834 done = PerlIOBuf_unread(f, vbuf, count);
1839 PerlIOBase_read(PerlIO *f, void *vbuf, Size_t count)
1841 STDCHAR *buf = (STDCHAR *) vbuf;
1843 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
1846 SSize_t avail = PerlIO_get_cnt(f);
1849 take = (count < avail) ? count : avail;
1851 STDCHAR *ptr = PerlIO_get_ptr(f);
1852 Copy(ptr, buf, take, STDCHAR);
1853 PerlIO_set_ptrcnt(f, ptr + take, (avail -= take));
1857 if (count > 0 && avail <= 0) {
1858 if (PerlIO_fill(f) != 0)
1862 return (buf - (STDCHAR *) vbuf);
1868 PerlIOBase_noop_ok(PerlIO *f)
1874 PerlIOBase_noop_fail(PerlIO *f)
1880 PerlIOBase_close(PerlIO *f)
1883 PerlIO *n = PerlIONext(f);
1884 if (PerlIO_flush(f) != 0)
1886 if (n && *n && (*PerlIOBase(n)->tab->Close) (n) != 0)
1888 PerlIOBase(f)->flags &=
1889 ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN);
1894 PerlIOBase_eof(PerlIO *f)
1897 return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0;
1903 PerlIOBase_error(PerlIO *f)
1906 return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0;
1912 PerlIOBase_clearerr(PerlIO *f)
1915 PerlIO *n = PerlIONext(f);
1916 PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF);
1923 PerlIOBase_setlinebuf(PerlIO *f)
1926 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF;
1930 /*--------------------------------------------------------------------------------------*/
1932 * Bottom-most level for UNIX-like case
1936 struct _PerlIO base; /* The generic part */
1937 int fd; /* UNIX like file descriptor */
1938 int oflags; /* open/fcntl flags */
1942 PerlIOUnix_oflags(const char *mode)
1945 if (*mode == 'I' || *mode == '#')
1950 if (*++mode == '+') {
1957 oflags = O_CREAT | O_TRUNC;
1958 if (*++mode == '+') {
1967 oflags = O_CREAT | O_APPEND;
1968 if (*++mode == '+') {
1981 else if (*mode == 't') {
1983 oflags &= ~O_BINARY;
1987 * Always open in binary mode
1990 if (*mode || oflags == -1) {
1991 SETERRNO(EINVAL, LIB$_INVARG);
1998 PerlIOUnix_fileno(PerlIO *f)
2000 return PerlIOSelf(f, PerlIOUnix)->fd;
2004 PerlIOUnix_pushed(PerlIO *f, const char *mode, SV *arg)
2006 IV code = PerlIOBase_pushed(f, mode, arg);
2007 if (*PerlIONext(f)) {
2008 PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix);
2009 s->fd = PerlIO_fileno(PerlIONext(f));
2011 * XXX could (or should) we retrieve the oflags from the open file
2012 * handle rather than believing the "mode" we are passed in? XXX
2013 * Should the value on NULL mode be 0 or -1?
2015 s->oflags = mode ? PerlIOUnix_oflags(mode) : -1;
2017 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
2022 PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
2023 IV n, const char *mode, int fd, int imode,
2024 int perm, PerlIO *f, int narg, SV **args)
2027 if (PerlIOBase(f)->flags & PERLIO_F_OPEN)
2028 (*PerlIOBase(f)->tab->Close) (f);
2031 char *path = SvPV_nolen(*args);
2035 imode = PerlIOUnix_oflags(mode);
2039 fd = PerlLIO_open3(path, imode, perm);
2047 f = PerlIO_allocate(aTHX);
2048 s = PerlIOSelf(PerlIO_push(aTHX_ f, self, mode, PerlIOArg),
2052 s = PerlIOSelf(f, PerlIOUnix);
2055 PerlIOBase(f)->flags |= PERLIO_F_OPEN;
2061 * FIXME: pop layers ???
2069 PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param)
2075 return sv_dup(arg, param);
2078 return newSVsv(arg);
2081 return newSVsv(arg);
2086 PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
2088 PerlIO *nexto = PerlIONext(o);
2090 PerlIO_funcs *tab = PerlIOBase(nexto)->tab;
2091 f = (*tab->Dup)(aTHX_ f, nexto, param);
2094 PerlIO_funcs *self = PerlIOBase(o)->tab;
2097 PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n",self->name,f,o,param);
2099 arg = (*self->Getarg)(o);
2101 arg = PerlIO_sv_dup(aTHX_ arg, param);
2104 f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg);
2113 PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
2115 PerlIOUnix *os = PerlIOSelf(o, PerlIOUnix);
2116 int fd = PerlLIO_dup(os->fd);
2118 f = PerlIOBase_dup(aTHX_ f, o, param);
2120 /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */
2121 PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix);
2134 PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count)
2137 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2138 if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD))
2141 SSize_t len = PerlLIO_read(fd, vbuf, count);
2142 if (len >= 0 || errno != EINTR) {
2144 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2145 else if (len == 0 && count != 0)
2146 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2154 PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count)
2157 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2159 SSize_t len = PerlLIO_write(fd, vbuf, count);
2160 if (len >= 0 || errno != EINTR) {
2162 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2170 PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence)
2174 PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, offset, whence);
2175 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2176 return (new == (Off_t) - 1) ? -1 : 0;
2180 PerlIOUnix_tell(PerlIO *f)
2183 return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR);
2188 PerlIOUnix_close(PerlIO *f)
2191 int fd = PerlIOSelf(f, PerlIOUnix)->fd;
2193 while (PerlLIO_close(fd) != 0) {
2194 if (errno != EINTR) {
2201 PerlIOBase(f)->flags &= ~PERLIO_F_OPEN;
2206 PerlIO_funcs PerlIO_unix = {
2222 PerlIOBase_noop_ok, /* flush */
2223 PerlIOBase_noop_fail, /* fill */
2226 PerlIOBase_clearerr,
2227 PerlIOBase_setlinebuf,
2228 NULL, /* get_base */
2229 NULL, /* get_bufsiz */
2232 NULL, /* set_ptrcnt */
2235 /*--------------------------------------------------------------------------------------*/
2241 struct _PerlIO base;
2242 FILE *stdio; /* The stream */
2246 PerlIOStdio_fileno(PerlIO *f)
2249 return PerlSIO_fileno(PerlIOSelf(f, PerlIOStdio)->stdio);
2253 PerlIOStdio_mode(const char *mode, char *tmode)
2259 if (O_BINARY != O_TEXT) {
2267 * This isn't used yet ...
2270 PerlIOStdio_pushed(PerlIO *f, const char *mode, SV *arg)
2272 if (*PerlIONext(f)) {
2274 PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio);
2277 PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)), mode =
2278 PerlIOStdio_mode(mode, tmode));
2284 return PerlIOBase_pushed(f, mode, arg);
2287 #undef PerlIO_importFILE
2289 PerlIO_importFILE(FILE *stdio, int fl)
2295 PerlIOSelf(PerlIO_push
2296 (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio,
2297 "r+", Nullsv), PerlIOStdio);
2304 PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
2305 IV n, const char *mode, int fd, int imode,
2306 int perm, PerlIO *f, int narg, SV **args)
2310 char *path = SvPV_nolen(*args);
2311 PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio);
2313 PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)),
2322 char *path = SvPV_nolen(*args);
2325 fd = PerlLIO_open3(path, imode, perm);
2328 FILE *stdio = PerlSIO_fopen(path, mode);
2331 PerlIOSelf(PerlIO_push
2332 (aTHX_(f = PerlIO_allocate(aTHX)), self,
2333 (mode = PerlIOStdio_mode(mode, tmode)),
2351 stdio = PerlSIO_stdin;
2354 stdio = PerlSIO_stdout;
2357 stdio = PerlSIO_stderr;
2362 stdio = PerlSIO_fdopen(fd, mode =
2363 PerlIOStdio_mode(mode, tmode));
2367 PerlIOSelf(PerlIO_push
2368 (aTHX_(f = PerlIO_allocate(aTHX)), self,
2369 mode, PerlIOArg), PerlIOStdio);
2379 PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count)
2382 FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio;
2385 STDCHAR *buf = (STDCHAR *) vbuf;
2387 * Perl is expecting PerlIO_getc() to fill the buffer Linux's
2388 * stdio does not do that for fread()
2390 int ch = PerlSIO_fgetc(s);
2397 got = PerlSIO_fread(vbuf, 1, count, s);
2402 PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count)
2405 FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio;
2406 STDCHAR *buf = ((STDCHAR *) vbuf) + count - 1;
2409 int ch = *buf-- & 0xff;
2410 if (PerlSIO_ungetc(ch, s) != ch)
2419 PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count)
2422 return PerlSIO_fwrite(vbuf, 1, count,
2423 PerlIOSelf(f, PerlIOStdio)->stdio);
2427 PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence)
2430 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2431 return PerlSIO_fseek(stdio, offset, whence);
2435 PerlIOStdio_tell(PerlIO *f)
2438 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2439 return PerlSIO_ftell(stdio);
2443 PerlIOStdio_close(PerlIO *f)
2446 #ifdef SOCKS5_VERSION_NAME
2448 Sock_size_t optlen = sizeof(int);
2450 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2452 #ifdef SOCKS5_VERSION_NAME
2454 (PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (void *) &optval,
2456 0) ? PerlSIO_fclose(stdio) : close(PerlIO_fileno(f))
2458 PerlSIO_fclose(stdio)
2465 PerlIOStdio_flush(PerlIO *f)
2468 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2469 if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) {
2470 return PerlSIO_fflush(stdio);
2475 * FIXME: This discards ungetc() and pre-read stuff which is not
2476 * right if this is just a "sync" from a layer above Suspect right
2477 * design is to do _this_ but not have layer above flush this
2478 * layer read-to-read
2481 * Not writeable - sync by attempting a seek
2484 if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0)
2492 PerlIOStdio_fill(PerlIO *f)
2495 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2498 * fflush()ing read-only streams can cause trouble on some stdio-s
2500 if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) {
2501 if (PerlSIO_fflush(stdio) != 0)
2504 c = PerlSIO_fgetc(stdio);
2505 if (c == EOF || PerlSIO_ungetc(c, stdio) != c)
2511 PerlIOStdio_eof(PerlIO *f)
2514 return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio);
2518 PerlIOStdio_error(PerlIO *f)
2521 return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio);
2525 PerlIOStdio_clearerr(PerlIO *f)
2528 PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio);
2532 PerlIOStdio_setlinebuf(PerlIO *f)
2535 #ifdef HAS_SETLINEBUF
2536 PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio);
2538 PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, Nullch, _IOLBF, 0);
2544 PerlIOStdio_get_base(PerlIO *f)
2547 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2548 return PerlSIO_get_base(stdio);
2552 PerlIOStdio_get_bufsiz(PerlIO *f)
2555 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2556 return PerlSIO_get_bufsiz(stdio);
2560 #ifdef USE_STDIO_PTR
2562 PerlIOStdio_get_ptr(PerlIO *f)
2565 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2566 return PerlSIO_get_ptr(stdio);
2570 PerlIOStdio_get_cnt(PerlIO *f)
2573 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2574 return PerlSIO_get_cnt(stdio);
2578 PerlIOStdio_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
2580 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
2583 #ifdef STDIO_PTR_LVALUE
2584 PerlSIO_set_ptr(stdio, ptr);
2585 #ifdef STDIO_PTR_LVAL_SETS_CNT
2586 if (PerlSIO_get_cnt(stdio) != (cnt)) {
2588 assert(PerlSIO_get_cnt(stdio) == (cnt));
2591 #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT))
2593 * Setting ptr _does_ change cnt - we are done
2597 #else /* STDIO_PTR_LVALUE */
2599 #endif /* STDIO_PTR_LVALUE */
2602 * Now (or only) set cnt
2604 #ifdef STDIO_CNT_LVALUE
2605 PerlSIO_set_cnt(stdio, cnt);
2606 #else /* STDIO_CNT_LVALUE */
2607 #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT))
2608 PerlSIO_set_ptr(stdio,
2609 PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) -
2611 #else /* STDIO_PTR_LVAL_SETS_CNT */
2613 #endif /* STDIO_PTR_LVAL_SETS_CNT */
2614 #endif /* STDIO_CNT_LVALUE */
2620 PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
2622 /* This assumes no layers underneath - which is what
2623 happens, but is not how I remember it. NI-S 2001/10/16
2625 int fd = PerlLIO_dup(PerlIO_fileno(o));
2628 FILE *stdio = PerlSIO_fdopen(fd, PerlIO_modestr(o, buf));
2630 if ((f = PerlIOBase_dup(aTHX_ f, o, param))) {
2631 PerlIOSelf(f, PerlIOStdio)->stdio = stdio;
2634 PerlSIO_fclose(stdio);
2645 PerlIO_funcs PerlIO_stdio = {
2647 sizeof(PerlIOStdio),
2665 PerlIOStdio_clearerr,
2666 PerlIOStdio_setlinebuf,
2668 PerlIOStdio_get_base,
2669 PerlIOStdio_get_bufsiz,
2674 #ifdef USE_STDIO_PTR
2675 PerlIOStdio_get_ptr,
2676 PerlIOStdio_get_cnt,
2677 #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT)))
2678 PerlIOStdio_set_ptrcnt
2679 #else /* STDIO_PTR_LVALUE */
2681 #endif /* STDIO_PTR_LVALUE */
2682 #else /* USE_STDIO_PTR */
2686 #endif /* USE_STDIO_PTR */
2689 #undef PerlIO_exportFILE
2691 PerlIO_exportFILE(PerlIO *f, int fl)
2695 stdio = fdopen(PerlIO_fileno(f), "r+");
2699 PerlIOSelf(PerlIO_push(aTHX_ f, &PerlIO_stdio, "r+", Nullsv),
2706 #undef PerlIO_findFILE
2708 PerlIO_findFILE(PerlIO *f)
2712 if (l->tab == &PerlIO_stdio) {
2713 PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio);
2716 l = *PerlIONext(&l);
2718 return PerlIO_exportFILE(f, 0);
2721 #undef PerlIO_releaseFILE
2723 PerlIO_releaseFILE(PerlIO *p, FILE *f)
2727 /*--------------------------------------------------------------------------------------*/
2729 * perlio buffer layer
2733 PerlIOBuf_pushed(PerlIO *f, const char *mode, SV *arg)
2736 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2737 int fd = PerlIO_fileno(f);
2739 if (fd >= 0 && PerlLIO_isatty(fd)) {
2740 PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY;
2742 posn = PerlIO_tell(PerlIONext(f));
2743 if (posn != (Off_t) - 1) {
2746 return PerlIOBase_pushed(f, mode, arg);
2750 PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers,
2751 IV n, const char *mode, int fd, int imode, int perm,
2752 PerlIO *f, int narg, SV **args)
2755 PerlIO *next = PerlIONext(f);
2757 PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab);
2759 (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
2762 || (*PerlIOBase(f)->tab->Pushed) (f, mode, PerlIOArg) != 0) {
2768 PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm());
2776 f = (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm,
2779 PerlIO_push(aTHX_ f, self, mode, PerlIOArg);
2780 fd = PerlIO_fileno(f);
2781 #if O_BINARY != O_TEXT
2783 * do something about failing setmode()? --jhi
2785 PerlLIO_setmode(fd, O_BINARY);
2787 if (init && fd == 2) {
2789 * Initial stderr is unbuffered
2791 PerlIOBase(f)->flags |= PERLIO_F_UNBUF;
2799 * This "flush" is akin to sfio's sync in that it handles files in either
2800 * read or write state
2803 PerlIOBuf_flush(PerlIO *f)
2805 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2807 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) {
2809 * write() the buffer
2811 STDCHAR *buf = b->buf;
2813 PerlIO *n = PerlIONext(f);
2814 while (p < b->ptr) {
2815 SSize_t count = PerlIO_write(n, p, b->ptr - p);
2819 else if (count < 0 || PerlIO_error(n)) {
2820 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2825 b->posn += (p - buf);
2827 else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
2828 STDCHAR *buf = PerlIO_get_base(f);
2830 * Note position change
2832 b->posn += (b->ptr - buf);
2833 if (b->ptr < b->end) {
2835 * We did not consume all of it
2837 if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) == 0) {
2838 b->posn = PerlIO_tell(PerlIONext(f));
2842 b->ptr = b->end = b->buf;
2843 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
2845 * FIXME: Is this right for read case ?
2847 if (PerlIO_flush(PerlIONext(f)) != 0)
2853 PerlIOBuf_fill(PerlIO *f)
2855 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2856 PerlIO *n = PerlIONext(f);
2859 * FIXME: doing the down-stream flush is a bad idea if it causes
2860 * pre-read data in stdio buffer to be discarded but this is too
2861 * simplistic - as it skips _our_ hosekeeping and breaks tell tests.
2862 * if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { }
2864 if (PerlIO_flush(f) != 0)
2866 if (PerlIOBase(f)->flags & PERLIO_F_TTY)
2867 PerlIOBase_flush_linebuf();
2870 PerlIO_get_base(f); /* allocate via vtable */
2872 b->ptr = b->end = b->buf;
2873 if (PerlIO_fast_gets(n)) {
2875 * Layer below is also buffered We do _NOT_ want to call its
2876 * ->Read() because that will loop till it gets what we asked for
2877 * which may hang on a pipe etc. Instead take anything it has to
2878 * hand, or ask it to fill _once_.
2880 avail = PerlIO_get_cnt(n);
2882 avail = PerlIO_fill(n);
2884 avail = PerlIO_get_cnt(n);
2886 if (!PerlIO_error(n) && PerlIO_eof(n))
2891 STDCHAR *ptr = PerlIO_get_ptr(n);
2892 SSize_t cnt = avail;
2893 if (avail > b->bufsiz)
2895 Copy(ptr, b->buf, avail, STDCHAR);
2896 PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail);
2900 avail = PerlIO_read(n, b->ptr, b->bufsiz);
2904 PerlIOBase(f)->flags |= PERLIO_F_EOF;
2906 PerlIOBase(f)->flags |= PERLIO_F_ERROR;
2909 b->end = b->buf + avail;
2910 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2915 PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count)
2917 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2921 return PerlIOBase_read(f, vbuf, count);
2927 PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count)
2929 const STDCHAR *buf = (const STDCHAR *) vbuf + count;
2930 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2933 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
2938 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
2940 * Buffer is already a read buffer, we can overwrite any chars
2941 * which have been read back to buffer start
2943 avail = (b->ptr - b->buf);
2947 * Buffer is idle, set it up so whole buffer is available for
2951 b->end = b->buf + avail;
2953 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
2955 * Buffer extends _back_ from where we are now
2957 b->posn -= b->bufsiz;
2959 if (avail > (SSize_t) count) {
2961 * If we have space for more than count, just move count
2969 * In simple stdio-like ungetc() case chars will be already
2972 if (buf != b->ptr) {
2973 Copy(buf, b->ptr, avail, STDCHAR);
2977 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
2984 PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count)
2986 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
2987 const STDCHAR *buf = (const STDCHAR *) vbuf;
2991 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
2994 SSize_t avail = b->bufsiz - (b->ptr - b->buf);
2995 if ((SSize_t) count < avail)
2997 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
2998 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) {
3013 Copy(buf, b->ptr, avail, STDCHAR);
3020 if (b->ptr >= (b->buf + b->bufsiz))
3023 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
3029 PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence)
3032 if ((code = PerlIO_flush(f)) == 0) {
3033 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3034 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
3035 code = PerlIO_seek(PerlIONext(f), offset, whence);
3037 b->posn = PerlIO_tell(PerlIONext(f));
3044 PerlIOBuf_tell(PerlIO *f)
3046 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3048 * b->posn is file position where b->buf was read, or will be written
3050 Off_t posn = b->posn;
3053 * If buffer is valid adjust position by amount in buffer
3055 posn += (b->ptr - b->buf);
3061 PerlIOBuf_close(PerlIO *f)
3063 IV code = PerlIOBase_close(f);
3064 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3065 if (b->buf && b->buf != (STDCHAR *) & b->oneword) {
3066 PerlMemShared_free(b->buf);
3069 b->ptr = b->end = b->buf;
3070 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
3075 PerlIOBuf_get_ptr(PerlIO *f)
3077 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3084 PerlIOBuf_get_cnt(PerlIO *f)
3086 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3089 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF)
3090 return (b->end - b->ptr);
3095 PerlIOBuf_get_base(PerlIO *f)
3097 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3101 b->buf = PerlMemShared_calloc(b->bufsiz, sizeof(STDCHAR));
3103 b->buf = (STDCHAR *) & b->oneword;
3104 b->bufsiz = sizeof(b->oneword);
3113 PerlIOBuf_bufsiz(PerlIO *f)
3115 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3118 return (b->end - b->buf);
3122 PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
3124 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3128 if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) {
3130 assert(PerlIO_get_cnt(f) == cnt);
3131 assert(b->ptr >= b->buf);
3133 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
3137 PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
3139 return PerlIOBase_dup(aTHX_ f, o, param);
3144 PerlIO_funcs PerlIO_perlio = {
3164 PerlIOBase_clearerr,
3165 PerlIOBase_setlinebuf,
3170 PerlIOBuf_set_ptrcnt,
3173 /*--------------------------------------------------------------------------------------*/
3175 * Temp layer to hold unread chars when cannot do it any other way
3179 PerlIOPending_fill(PerlIO *f)
3182 * Should never happen
3189 PerlIOPending_close(PerlIO *f)
3192 * A tad tricky - flush pops us, then we close new top
3195 return PerlIO_close(f);
3199 PerlIOPending_seek(PerlIO *f, Off_t offset, int whence)
3202 * A tad tricky - flush pops us, then we seek new top
3205 return PerlIO_seek(f, offset, whence);
3210 PerlIOPending_flush(PerlIO *f)
3213 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3214 if (b->buf && b->buf != (STDCHAR *) & b->oneword) {
3215 PerlMemShared_free(b->buf);
3218 PerlIO_pop(aTHX_ f);
3223 PerlIOPending_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
3229 PerlIOBuf_set_ptrcnt(f, ptr, cnt);
3234 PerlIOPending_pushed(PerlIO *f, const char *mode, SV *arg)
3236 IV code = PerlIOBase_pushed(f, mode, arg);
3237 PerlIOl *l = PerlIOBase(f);
3239 * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets()
3240 * etc. get muddled when it changes mid-string when we auto-pop.
3242 l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) |
3243 (PerlIOBase(PerlIONext(f))->
3244 flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8));
3249 PerlIOPending_read(PerlIO *f, void *vbuf, Size_t count)
3251 SSize_t avail = PerlIO_get_cnt(f);
3256 got = PerlIOBuf_read(f, vbuf, avail);
3257 if (got >= 0 && got < count) {
3259 PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got);
3260 if (more >= 0 || got == 0)
3266 PerlIO_funcs PerlIO_pending = {
3270 PerlIOPending_pushed,
3281 PerlIOPending_close,
3282 PerlIOPending_flush,
3286 PerlIOBase_clearerr,
3287 PerlIOBase_setlinebuf,
3292 PerlIOPending_set_ptrcnt,
3297 /*--------------------------------------------------------------------------------------*/
3299 * crlf - translation On read translate CR,LF to "\n" we do this by
3300 * overriding ptr/cnt entries to hand back a line at a time and keeping a
3301 * record of which nl we "lied" about. On write translate "\n" to CR,LF
3305 PerlIOBuf base; /* PerlIOBuf stuff */
3306 STDCHAR *nl; /* Position of crlf we "lied" about in the
3311 PerlIOCrlf_pushed(PerlIO *f, const char *mode, SV *arg)
3314 PerlIOBase(f)->flags |= PERLIO_F_CRLF;
3315 code = PerlIOBuf_pushed(f, mode, arg);
3317 PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n",
3318 f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)",
3319 PerlIOBase(f)->flags);
3326 PerlIOCrlf_unread(PerlIO *f, const void *vbuf, Size_t count)
3328 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3333 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3334 return PerlIOBuf_unread(f, vbuf, count);
3336 const STDCHAR *buf = (const STDCHAR *) vbuf + count;
3337 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3339 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3344 if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3345 b->end = b->ptr = b->buf + b->bufsiz;
3346 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
3347 b->posn -= b->bufsiz;
3349 while (count > 0 && b->ptr > b->buf) {
3352 if (b->ptr - 2 >= b->buf) {
3375 PerlIOCrlf_get_cnt(PerlIO *f)
3377 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3380 if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) {
3381 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3382 if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && !c->nl) {
3383 STDCHAR *nl = b->ptr;
3385 while (nl < b->end && *nl != 0xd)
3387 if (nl < b->end && *nl == 0xd) {
3389 if (nl + 1 < b->end) {
3396 * Not CR,LF but just CR
3404 * Blast - found CR as last char in buffer
3408 * They may not care, defer work as long as
3411 return (nl - b->ptr);
3415 b->ptr++; /* say we have read it as far as
3416 * flush() is concerned */
3417 b->buf++; /* Leave space an front of buffer */
3418 b->bufsiz--; /* Buffer is thus smaller */
3419 code = PerlIO_fill(f); /* Fetch some more */
3420 b->bufsiz++; /* Restore size for next time */
3421 b->buf--; /* Point at space */
3422 b->ptr = nl = b->buf; /* Which is what we hand
3424 b->posn--; /* Buffer starts here */
3425 *nl = 0xd; /* Fill in the CR */
3427 goto test; /* fill() call worked */
3429 * CR at EOF - just fall through
3435 return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr);
3441 PerlIOCrlf_set_ptrcnt(PerlIO *f, STDCHAR * ptr, SSize_t cnt)
3443 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3444 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3445 IV flags = PerlIOBase(f)->flags;
3453 if ((flags & PERLIO_F_CRLF) && ptr > b->buf && ptr[-1] == 0xd)
3460 * Test code - delete when it works ...
3467 if ((flags & PERLIO_F_CRLF) && chk > b->buf && chk[-1] == 0xd)
3474 Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf
3475 " nl=%p e=%p for %d", ptr, chk, flags, c->nl,
3482 * They have taken what we lied about
3490 PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
3494 PerlIOCrlf_write(PerlIO *f, const void *vbuf, Size_t count)
3496 if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF))
3497 return PerlIOBuf_write(f, vbuf, count);
3499 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3500 const STDCHAR *buf = (const STDCHAR *) vbuf;
3501 const STDCHAR *ebuf = buf + count;
3504 if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE))
3506 while (buf < ebuf) {
3507 STDCHAR *eptr = b->buf + b->bufsiz;
3508 PerlIOBase(f)->flags |= PERLIO_F_WRBUF;
3509 while (buf < ebuf && b->ptr < eptr) {
3511 if ((b->ptr + 2) > eptr) {
3519 *(b->ptr)++ = 0xd; /* CR */
3520 *(b->ptr)++ = 0xa; /* LF */
3522 if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) {
3532 if (b->ptr >= eptr) {
3538 if (PerlIOBase(f)->flags & PERLIO_F_UNBUF)
3540 return (buf - (STDCHAR *) vbuf);
3545 PerlIOCrlf_flush(PerlIO *f)
3547 PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf);
3552 return PerlIOBuf_flush(f);
3555 PerlIO_funcs PerlIO_crlf = {
3558 PERLIO_K_BUFFERED | PERLIO_K_CANCRLF,
3560 PerlIOBase_noop_ok, /* popped */
3565 PerlIOBuf_read, /* generic read works with ptr/cnt lies
3567 PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */
3568 PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */
3576 PerlIOBase_clearerr,
3577 PerlIOBase_setlinebuf,
3582 PerlIOCrlf_set_ptrcnt,
3586 /*--------------------------------------------------------------------------------------*/
3588 * mmap as "buffer" layer
3592 PerlIOBuf base; /* PerlIOBuf stuff */
3593 Mmap_t mptr; /* Mapped address */
3594 Size_t len; /* mapped length */
3595 STDCHAR *bbuf; /* malloced buffer if map fails */
3598 static size_t page_size = 0;
3601 PerlIOMmap_map(PerlIO *f)
3604 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3605 IV flags = PerlIOBase(f)->flags;
3609 if (flags & PERLIO_F_CANREAD) {
3610 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3611 int fd = PerlIO_fileno(f);
3613 code = fstat(fd, &st);
3614 if (code == 0 && S_ISREG(st.st_mode)) {
3615 SSize_t len = st.st_size - b->posn;
3619 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE))
3621 SETERRNO(0, SS$_NORMAL);
3622 # ifdef _SC_PAGESIZE
3623 page_size = sysconf(_SC_PAGESIZE);
3625 page_size = sysconf(_SC_PAGE_SIZE);
3627 if ((long) page_size < 0) {
3632 (void) SvUPGRADE(error, SVt_PV);
3633 msg = SvPVx(error, n_a);
3634 Perl_croak(aTHX_ "panic: sysconf: %s",
3639 "panic: sysconf: pagesize unknown");
3643 # ifdef HAS_GETPAGESIZE
3644 page_size = getpagesize();
3646 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
3647 page_size = PAGESIZE; /* compiletime, bad */
3651 if ((IV) page_size <= 0)
3652 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
3657 * This is a hack - should never happen - open should
3660 b->posn = PerlIO_tell(PerlIONext(f));
3662 posn = (b->posn / page_size) * page_size;
3663 len = st.st_size - posn;
3664 m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
3665 if (m->mptr && m->mptr != (Mmap_t) - 1) {
3666 #if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL)
3667 madvise(m->mptr, len, MADV_SEQUENTIAL);
3669 #if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED)
3670 madvise(m->mptr, len, MADV_WILLNEED);
3672 PerlIOBase(f)->flags =
3673 (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF;
3674 b->end = ((STDCHAR *) m->mptr) + len;
3675 b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn);
3684 PerlIOBase(f)->flags =
3685 flags | PERLIO_F_EOF | PERLIO_F_RDBUF;
3687 b->ptr = b->end = b->ptr;
3696 PerlIOMmap_unmap(PerlIO *f)
3698 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3699 PerlIOBuf *b = &m->base;
3703 code = munmap(m->mptr, m->len);
3707 if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0)
3710 b->ptr = b->end = b->buf;
3711 PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF);
3717 PerlIOMmap_get_base(PerlIO *f)
3719 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3720 PerlIOBuf *b = &m->base;
3721 if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3723 * Already have a readbuffer in progress
3729 * We have a write buffer or flushed PerlIOBuf read buffer
3731 m->bbuf = b->buf; /* save it in case we need it again */
3732 b->buf = NULL; /* Clear to trigger below */
3735 PerlIOMmap_map(f); /* Try and map it */
3738 * Map did not work - recover PerlIOBuf buffer if we have one
3743 b->ptr = b->end = b->buf;
3746 return PerlIOBuf_get_base(f);
3750 PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count)
3752 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3753 PerlIOBuf *b = &m->base;
3754 if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
3756 if (b->ptr && (b->ptr - count) >= b->buf
3757 && memEQ(b->ptr - count, vbuf, count)) {
3759 PerlIOBase(f)->flags &= ~PERLIO_F_EOF;
3764 * Loose the unwritable mapped buffer
3768 * If flush took the "buffer" see if we have one from before
3770 if (!b->buf && m->bbuf)
3773 PerlIOBuf_get_base(f);
3777 return PerlIOBuf_unread(f, vbuf, count);
3781 PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count)
3783 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3784 PerlIOBuf *b = &m->base;
3785 if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) {
3787 * No, or wrong sort of, buffer
3790 if (PerlIOMmap_unmap(f) != 0)
3794 * If unmap took the "buffer" see if we have one from before
3796 if (!b->buf && m->bbuf)
3799 PerlIOBuf_get_base(f);
3803 return PerlIOBuf_write(f, vbuf, count);
3807 PerlIOMmap_flush(PerlIO *f)
3809 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3810 PerlIOBuf *b = &m->base;
3811 IV code = PerlIOBuf_flush(f);
3813 * Now we are "synced" at PerlIOBuf level
3820 if (PerlIOMmap_unmap(f) != 0)
3825 * We seem to have a PerlIOBuf buffer which was not mapped
3826 * remember it in case we need one later
3835 PerlIOMmap_fill(PerlIO *f)
3837 PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf);
3838 IV code = PerlIO_flush(f);
3839 if (code == 0 && !b->buf) {
3840 code = PerlIOMmap_map(f);
3842 if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) {
3843 code = PerlIOBuf_fill(f);
3849 PerlIOMmap_close(PerlIO *f)
3851 PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap);
3852 PerlIOBuf *b = &m->base;
3853 IV code = PerlIO_flush(f);
3857 b->ptr = b->end = b->buf;
3859 if (PerlIOBuf_close(f) != 0)
3865 PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param)
3867 return PerlIOBase_dup(aTHX_ f, o, param);
3871 PerlIO_funcs PerlIO_mmap = {
3891 PerlIOBase_clearerr,
3892 PerlIOBase_setlinebuf,
3893 PerlIOMmap_get_base,
3897 PerlIOBuf_set_ptrcnt,
3900 #endif /* HAS_MMAP */
3907 call_atexit(PerlIO_cleanup_layers, NULL);
3911 atexit(&PerlIO_cleanup);
3922 PerlIO_stdstreams(aTHX);
3927 #undef PerlIO_stdout
3933 PerlIO_stdstreams(aTHX);
3938 #undef PerlIO_stderr
3944 PerlIO_stdstreams(aTHX);
3949 /*--------------------------------------------------------------------------------------*/
3951 #undef PerlIO_getname
3953 PerlIO_getname(PerlIO *f, char *buf)
3958 FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
3960 name = fgetname(stdio, buf);
3962 Perl_croak(aTHX_ "Don't know how to get file name");
3968 /*--------------------------------------------------------------------------------------*/
3970 * Functions which can be called on any kind of PerlIO implemented in
3976 PerlIO_getc(PerlIO *f)
3979 SSize_t count = PerlIO_read(f, buf, 1);
3981 return (unsigned char) buf[0];
3986 #undef PerlIO_ungetc
3988 PerlIO_ungetc(PerlIO *f, int ch)
3992 if (PerlIO_unread(f, &buf, 1) == 1)
4000 PerlIO_putc(PerlIO *f, int ch)
4003 return PerlIO_write(f, &buf, 1);
4008 PerlIO_puts(PerlIO *f, const char *s)
4010 STRLEN len = strlen(s);
4011 return PerlIO_write(f, s, len);
4014 #undef PerlIO_rewind
4016 PerlIO_rewind(PerlIO *f)
4018 PerlIO_seek(f, (Off_t) 0, SEEK_SET);
4022 #undef PerlIO_vprintf
4024 PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap)
4027 SV *sv = newSVpvn("", 0);
4033 Perl_va_copy(ap, apc);
4034 sv_vcatpvf(sv, fmt, &apc);
4036 sv_vcatpvf(sv, fmt, &ap);
4039 wrote = PerlIO_write(f, s, len);
4044 #undef PerlIO_printf
4046 PerlIO_printf(PerlIO *f, const char *fmt, ...)
4051 result = PerlIO_vprintf(f, fmt, ap);
4056 #undef PerlIO_stdoutf
4058 PerlIO_stdoutf(const char *fmt, ...)
4063 result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap);
4068 #undef PerlIO_tmpfile
4070 PerlIO_tmpfile(void)
4073 * I have no idea how portable mkstemp() is ...
4075 #if defined(WIN32) || !defined(HAVE_MKSTEMP)
4078 FILE *stdio = PerlSIO_tmpfile();
4081 PerlIOSelf(PerlIO_push
4082 (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio,
4083 "w+", Nullsv), PerlIOStdio);
4089 SV *sv = newSVpv("/tmp/PerlIO_XXXXXX", 0);
4090 int fd = mkstemp(SvPVX(sv));
4093 f = PerlIO_fdopen(fd, "w+");
4095 PerlIOBase(f)->flags |= PERLIO_F_TEMP;
4097 PerlLIO_unlink(SvPVX(sv));
4107 #endif /* USE_SFIO */
4108 #endif /* PERLIO_IS_STDIO */
4110 /*======================================================================================*/
4112 * Now some functions in terms of above which may be needed even if we are
4113 * not in true PerlIO mode
4117 #undef PerlIO_setpos
4119 PerlIO_setpos(PerlIO *f, SV *pos)
4124 Off_t *posn = (Off_t *) SvPV(pos, len);
4125 if (f && len == sizeof(Off_t))
4126 return PerlIO_seek(f, *posn, SEEK_SET);
4128 SETERRNO(EINVAL, SS$_IVCHAN);
4132 #undef PerlIO_setpos
4134 PerlIO_setpos(PerlIO *f, SV *pos)
4139 Fpos_t *fpos = (Fpos_t *) SvPV(pos, len);
4140 if (f && len == sizeof(Fpos_t)) {
4141 #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64)
4142 return fsetpos64(f, fpos);
4144 return fsetpos(f, fpos);
4148 SETERRNO(EINVAL, SS$_IVCHAN);
4154 #undef PerlIO_getpos
4156 PerlIO_getpos(PerlIO *f, SV *pos)
4159 Off_t posn = PerlIO_tell(f);
4160 sv_setpvn(pos, (char *) &posn, sizeof(posn));
4161 return (posn == (Off_t) - 1) ? -1 : 0;
4164 #undef PerlIO_getpos
4166 PerlIO_getpos(PerlIO *f, SV *pos)
4171 #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64)
4172 code = fgetpos64(f, &fpos);
4174 code = fgetpos(f, &fpos);
4176 sv_setpvn(pos, (char *) &fpos, sizeof(fpos));
4181 #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF)
4184 vprintf(char *pat, char *args)
4186 _doprnt(pat, args, stdout);
4187 return 0; /* wrong, but perl doesn't use the return
4192 vfprintf(FILE *fd, char *pat, char *args)
4194 _doprnt(pat, args, fd);
4195 return 0; /* wrong, but perl doesn't use the return
4201 #ifndef PerlIO_vsprintf
4203 PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap)
4205 int val = vsprintf(s, fmt, ap);
4207 if (strlen(s) >= (STRLEN) n) {
4209 (void) PerlIO_puts(Perl_error_log,
4210 "panic: sprintf overflow - memory corrupted!\n");
4218 #ifndef PerlIO_sprintf
4220 PerlIO_sprintf(char *s, int n, const char *fmt, ...)
4225 result = PerlIO_vsprintf(s, n, fmt, ap);