X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perlio.c;h=304107bcd3f728291020d39b13ec90366a8161dd;hb=1fb76a4637fd4800180784d4acf2abcdd008365e;hp=7dc895c63aa056d99853be354b723df6c7ab5d24;hpb=76ced9add7b621dfc9d4ecb534aeea8e131a418a;p=p5sagit%2Fp5-mst-13.2.git diff --git a/perlio.c b/perlio.c index 7dc895c..304107b 100644 --- a/perlio.c +++ b/perlio.c @@ -1,12 +1,25 @@ -/* perlio.c - * - * Copyright (c) 1996-2000, Nick Ing-Simmons - * - * You may distribute under the terms of either the GNU General Public - * License or the Artistic License, as specified in the README file. - * +/* + * perlio.c Copyright (c) 1996-2002, Nick Ing-Simmons You may distribute + * under the terms of either the GNU General Public License or the + * Artistic License, as specified in the README file. + */ + +/* + * Hour after hour for nearly three weary days he had jogged up and down, + * over passes, and through long dales, and across many streams. */ +/* + * If we have ActivePerl-like PERL_IMPLICIT_SYS then we need a dTHX to get + * at the dispatch tables, even when we do not need it for other reasons. + * Invent a dSYS macro to abstract this out + */ +#ifdef PERL_IMPLICIT_SYS +#define dSYS dTHX +#else +#define dSYS dNOOP +#endif + #define VOIDUSED 1 #ifdef PERL_MICRO # include "uconfig.h" @@ -16,11 +29,13 @@ #define PERLIO_NOT_STDIO 0 #if !defined(PERLIO_IS_STDIO) && !defined(USE_SFIO) -/* #define PerlIO FILE */ +/* + * #define PerlIO FILE + */ #endif /* * This file provides those parts of PerlIO abstraction - * which are not #defined in iperlsys.h. + * which are not #defined in perlio.h. * Which these are depends on various Configure #ifdef's */ @@ -28,69 +43,334 @@ #define PERL_IN_PERLIO_C #include "perl.h" -#if !defined(PERL_IMPLICIT_SYS) +#ifdef PERL_IMPLICIT_CONTEXT +#undef dSYS +#define dSYS dTHX +#endif -#ifdef PERLIO_IS_STDIO +#include "XSUB.h" + +int +perlsio_binmode(FILE *fp, int iotype, int mode) +{ + /* + * This used to be contents of do_binmode in doio.c + */ +#ifdef DOSISH +# if defined(atarist) || defined(__MINT__) + if (!fflush(fp)) { + if (mode & O_BINARY) + ((FILE *) fp)->_flag |= _IOBIN; + else + ((FILE *) fp)->_flag &= ~_IOBIN; + return 1; + } + return 0; +# else + dTHX; +#ifdef NETWARE + if (PerlLIO_setmode(fp, mode) != -1) { +#else + if (PerlLIO_setmode(fileno(fp), mode) != -1) { +#endif +# if defined(WIN32) && defined(__BORLANDC__) + /* + * The translation mode of the stream is maintained independent of + * the translation mode of the fd in the Borland RTL (heavy + * digging through their runtime sources reveal). User has to set + * the mode explicitly for the stream (though they don't document + * this anywhere). GSAR 97-5-24 + */ + fseek(fp, 0L, 0); + if (mode & O_BINARY) + fp->flags |= _F_BIN; + else + fp->flags &= ~_F_BIN; +# endif + return 1; + } + else + return 0; +# endif +#else +# if defined(USEMYBINMODE) + dTHX; + if (my_binmode(fp, iotype, mode) != FALSE) + return 1; + else + return 0; +# else + return 1; +# endif +#endif +} + +#ifndef O_ACCMODE +#define O_ACCMODE 3 /* Assume traditional implementation */ +#endif + +int +PerlIO_intmode2str(int rawmode, char *mode, int *writing) +{ + int result = rawmode & O_ACCMODE; + int ix = 0; + int ptype; + switch (result) { + case O_RDONLY: + ptype = IoTYPE_RDONLY; + break; + case O_WRONLY: + ptype = IoTYPE_WRONLY; + break; + case O_RDWR: + default: + ptype = IoTYPE_RDWR; + break; + } + if (writing) + *writing = (result != O_RDONLY); + + if (result == O_RDONLY) { + mode[ix++] = 'r'; + } +#ifdef O_APPEND + else if (rawmode & O_APPEND) { + mode[ix++] = 'a'; + if (result != O_WRONLY) + mode[ix++] = '+'; + } +#endif + else { + if (result == O_WRONLY) + mode[ix++] = 'w'; + else { + mode[ix++] = 'r'; + mode[ix++] = '+'; + } + } + if (rawmode & O_BINARY) + mode[ix++] = 'b'; + mode[ix] = '\0'; + return ptype; +} + +#ifndef PERLIO_LAYERS +int +PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) +{ + if (!names || !*names + || strEQ(names, ":crlf") + || strEQ(names, ":raw") + || strEQ(names, ":bytes") + ) { + return 0; + } + Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl", names); + /* + * NOTREACHED + */ + return -1; +} void -PerlIO_init(void) +PerlIO_destruct(pTHX) +{ +} + +int +PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names) +{ +#ifdef USE_SFIO + return 1; +#else + return perlsio_binmode(fp, iotype, mode); +#endif +} + +PerlIO * +PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) { - /* Does nothing (yet) except force this file to be included - in perl binary. That allows this file to force inclusion - of other functions that may be required by loadable - extensions e.g. for FileHandle::tmpfile +#ifdef PERL_MICRO + return NULL; +#else +#ifdef PERL_IMPLICIT_SYS + return PerlSIO_fdupopen(f); +#else +#ifdef WIN32 + return win32_fdupopen(f); +#else + if (f) { + int fd = PerlLIO_dup(PerlIO_fileno(f)); + if (fd >= 0) { + char mode[8]; + int omode = fcntl(fd, F_GETFL); +#ifdef DJGPP + omode = djgpp_get_stream_mode(f); +#endif + PerlIO_intmode2str(omode,mode,NULL); + /* the r+ is a hack */ + return PerlIO_fdopen(fd, mode); + } + return NULL; + } + else { + SETERRNO(EBADF, SS$_IVCHAN); + } +#endif + return NULL; +#endif +#endif +} + + +/* + * De-mux PerlIO_openn() into fdopen, freopen and fopen type entries */ + +PerlIO * +PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, + int imode, int perm, PerlIO *old, int narg, SV **args) +{ + if (narg) { + if (narg > 1) { + Perl_croak(aTHX_ "More than one argument to open"); + } + if (*args == &PL_sv_undef) + return PerlIO_tmpfile(); + else { + char *name = SvPV_nolen(*args); + if (*mode == '#') { + fd = PerlLIO_open3(name, imode, perm); + if (fd >= 0) + return PerlIO_fdopen(fd, (char *) mode + 1); + } + else if (old) { + return PerlIO_reopen(name, mode, old); + } + else { + return PerlIO_open(name, mode); + } + } + } + else { + return PerlIO_fdopen(fd, (char *) mode); + } + return NULL; +} + +XS(XS_PerlIO__Layer__find) +{ + dXSARGS; + if (items < 2) + Perl_croak(aTHX_ "Usage class->find(name[,load])"); + else { + char *name = SvPV_nolen(ST(1)); + ST(0) = (strEQ(name, "crlf") + || strEQ(name, "raw")) ? &PL_sv_yes : &PL_sv_undef; + XSRETURN(1); + } +} + + +void +Perl_boot_core_PerlIO(pTHX) +{ + newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); +} + +#endif + + +#ifdef PERLIO_IS_STDIO + +void +PerlIO_init(pTHX) +{ + /* + * Does nothing (yet) except force this file to be included in perl + * binary. That allows this file to force inclusion of other functions + * that may be required by loadable extensions e.g. for + * FileHandle::tmpfile + */ } #undef PerlIO_tmpfile PerlIO * PerlIO_tmpfile(void) { - return tmpfile(); + return tmpfile(); } -#else /* PERLIO_IS_STDIO */ +#else /* PERLIO_IS_STDIO */ #ifdef USE_SFIO #undef HAS_FSETPOS #undef HAS_FGETPOS -/* This section is just to make sure these functions - get pulled in from libsfio.a -*/ +/* + * This section is just to make sure these functions get pulled in from + * libsfio.a + */ #undef PerlIO_tmpfile PerlIO * PerlIO_tmpfile(void) { - return sftmp(0); + return sftmp(0); } void -PerlIO_init(void) +PerlIO_init(pTHX) { - /* Force this file to be included in perl binary. Which allows - * this file to force inclusion of other functions that may be - * required by loadable extensions e.g. for FileHandle::tmpfile - */ + /* + * Force this file to be included in perl binary. Which allows this + * file to force inclusion of other functions that may be required by + * loadable extensions e.g. for FileHandle::tmpfile + */ - /* Hack - * sfio does its own 'autoflush' on stdout in common cases. - * Flush results in a lot of lseek()s to regular files and - * lot of small writes to pipes. - */ - sfset(sfstdout,SF_SHARE,0); + /* + * Hack sfio does its own 'autoflush' on stdout in common cases. Flush + * results in a lot of lseek()s to regular files and lot of small + * writes to pipes. + */ + sfset(sfstdout, SF_SHARE, 0); } -#else /* USE_SFIO */ +PerlIO * +PerlIO_importFILE(FILE *stdio, int fl) +{ + int fd = fileno(stdio); + PerlIO *r = PerlIO_fdopen(fd, "r+"); + return r; +} + +FILE * +PerlIO_findFILE(PerlIO *pio) +{ + int fd = PerlIO_fileno(pio); + FILE *f = fdopen(fd, "r+"); + PerlIO_flush(pio); + if (!f && errno == EINVAL) + f = fdopen(fd, "w"); + if (!f && errno == EINVAL) + f = fdopen(fd, "r"); + return f; +} + + +#else /* USE_SFIO */ /*======================================================================================*/ -/* Implement all the PerlIO interface ourselves. +/* + * Implement all the PerlIO interface ourselves. */ #include "perliol.h" -/* We _MUST_ have if we are using lseek() and may have large files */ +/* + * We _MUST_ have if we are using lseek() and may have large + * files + */ #ifdef I_UNISTD #include #endif @@ -98,2137 +378,4133 @@ PerlIO_init(void) #include #endif -#include "XSUB.h" -void PerlIO_debug(char *fmt,...) __attribute__((format(__printf__,1,2))); +void PerlIO_debug(const char *fmt, ...) + __attribute__ ((format(__printf__, 1, 2))); void -PerlIO_debug(char *fmt,...) -{ - static int dbg = 0; - if (!dbg) - { - char *s = getenv("PERLIO_DEBUG"); - if (s && *s) - dbg = open(s,O_WRONLY|O_CREAT|O_APPEND,0666); - else - dbg = -1; - } - if (dbg > 0) - { - dTHX; - va_list ap; - SV *sv = newSVpvn("",0); - char *s; - STRLEN len; - va_start(ap,fmt); - s = CopFILE(PL_curcop); - if (!s) - s = "(none)"; - Perl_sv_catpvf(aTHX_ sv, "%s:%"IVdf" ", s, (IV)CopLINE(PL_curcop)); - Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); - - s = SvPV(sv,len); - write(dbg,s,len); - va_end(ap); - SvREFCNT_dec(sv); - } +PerlIO_debug(const char *fmt, ...) +{ + static int dbg = 0; + va_list ap; + dSYS; + va_start(ap, fmt); + if (!dbg) { + char *s = PerlEnv_getenv("PERLIO_DEBUG"); + if (s && *s) + dbg = PerlLIO_open3(s, O_WRONLY | O_CREAT | O_APPEND, 0666); + else + dbg = -1; + } + if (dbg > 0) { + dTHX; +#ifdef USE_ITHREADS + /* Use fixed buffer as sv_catpvf etc. needs SVs */ + char buffer[1024]; + char *s; + STRLEN len; + s = CopFILE(PL_curcop); + if (!s) + s = "(none)"; + sprintf(buffer, "%s:%" IVdf " ", s, (IV) CopLINE(PL_curcop)); + len = strlen(buffer); + vsprintf(buffer+len, fmt, ap); + PerlLIO_write(dbg, buffer, strlen(buffer)); +#else + SV *sv = newSVpvn("", 0); + char *s; + STRLEN len; + s = CopFILE(PL_curcop); + if (!s) + s = "(none)"; + Perl_sv_catpvf(aTHX_ sv, "%s:%" IVdf " ", s, + (IV) CopLINE(PL_curcop)); + Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap); + + s = SvPV(sv, len); + PerlLIO_write(dbg, s, len); + SvREFCNT_dec(sv); +#endif + } + va_end(ap); } /*--------------------------------------------------------------------------------------*/ -/* Inner level routines */ +/* + * Inner level routines + */ -/* Table of pointers to the PerlIO structs (malloc'ed) */ -PerlIO *_perlio = NULL; +/* + * Table of pointers to the PerlIO structs (malloc'ed) + */ #define PERLIO_TABLE_SIZE 64 PerlIO * -PerlIO_allocate(void) -{ - /* Find a free slot in the table, allocating new table as necessary */ - PerlIO **last = &_perlio; - PerlIO *f; - while ((f = *last)) - { - int i; - last = (PerlIO **)(f); - for (i=1; i < PERLIO_TABLE_SIZE; i++) - { - if (!*++f) - { - return f; - } - } - } - Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); - if (!f) - return NULL; - *last = f; - return f+1; +PerlIO_allocate(pTHX) +{ + /* + * Find a free slot in the table, allocating new table as necessary + */ + PerlIO **last; + PerlIO *f; + last = &PL_perlio; + while ((f = *last)) { + int i; + last = (PerlIO **) (f); + for (i = 1; i < PERLIO_TABLE_SIZE; i++) { + if (!*++f) { + return f; + } + } + } + Newz('I',f,PERLIO_TABLE_SIZE,PerlIO); + if (!f) { + return NULL; + } + *last = f; + return f + 1; +} + +#undef PerlIO_fdupopen +PerlIO * +PerlIO_fdupopen(pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) +{ + if (PerlIOValid(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + PerlIO *new; + PerlIO_debug("fdupopen f=%p param=%p\n",(void*)f,(void*)param); + new = (*tab->Dup)(aTHX_ PerlIO_allocate(aTHX),f,param, flags); + return new; + } + else { + SETERRNO(EBADF, SS$_IVCHAN); + return NULL; + } } void -PerlIO_cleantable(PerlIO **tablep) -{ - PerlIO *table = *tablep; - if (table) - { - int i; - PerlIO_cleantable((PerlIO **) &(table[0])); - for (i=PERLIO_TABLE_SIZE-1; i > 0; i--) - { - PerlIO *f = table+i; - if (*f) - PerlIO_close(f); +PerlIO_cleantable(pTHX_ PerlIO **tablep) +{ + PerlIO *table = *tablep; + if (table) { + int i; + PerlIO_cleantable(aTHX_(PerlIO **) & (table[0])); + for (i = PERLIO_TABLE_SIZE - 1; i > 0; i--) { + PerlIO *f = table + i; + if (*f) { + PerlIO_close(f); + } + } + Safefree(table); + *tablep = NULL; } - Safefree(table); - *tablep = NULL; - } } -HV *PerlIO_layer_hv; -AV *PerlIO_layer_av; -void -PerlIO_cleanup(void) +PerlIO_list_t * +PerlIO_list_alloc(pTHX) { - PerlIO_cleantable(&_perlio); + PerlIO_list_t *list; + Newz('L', list, 1, PerlIO_list_t); + list->refcnt = 1; + return list; } void -PerlIO_pop(PerlIO *f) +PerlIO_list_free(pTHX_ PerlIO_list_t *list) +{ + if (list) { + if (--list->refcnt == 0) { + if (list->array) { + IV i; + for (i = 0; i < list->cur; i++) { + if (list->array[i].arg) + SvREFCNT_dec(list->array[i].arg); + } + Safefree(list->array); + } + Safefree(list); + } + } +} + +void +PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg) +{ + PerlIO_pair_t *p; + if (list->cur >= list->len) { + list->len += 8; + if (list->array) + Renew(list->array, list->len, PerlIO_pair_t); + else + New('l', list->array, list->len, PerlIO_pair_t); + } + p = &(list->array[list->cur++]); + p->funcs = funcs; + if ((p->arg = arg)) { + SvREFCNT_inc(arg); + } +} + +PerlIO_list_t * +PerlIO_clone_list(pTHX_ PerlIO_list_t *proto, CLONE_PARAMS *param) { - PerlIOl *l = *f; - if (l) - { - (*l->tab->Popped)(f); - *f = l->next; - Safefree(l); - } + PerlIO_list_t *list = (PerlIO_list_t *) NULL; + if (proto) { + int i; + list = PerlIO_list_alloc(aTHX); + for (i=0; i < proto->cur; i++) { + SV *arg = Nullsv; + if (proto->array[i].arg) + arg = PerlIO_sv_dup(aTHX_ proto->array[i].arg,param); + PerlIO_list_push(aTHX_ list, proto->array[i].funcs, arg); + } + } + return list; } -#undef PerlIO_close -int -PerlIO_close(PerlIO *f) +void +PerlIO_clone(pTHX_ PerlInterpreter *proto, CLONE_PARAMS *param) +{ +#ifdef USE_ITHREADS + PerlIO **table = &proto->Iperlio; + PerlIO *f; + PL_perlio = NULL; + PL_known_layers = PerlIO_clone_list(aTHX_ proto->Iknown_layers, param); + PL_def_layerlist = PerlIO_clone_list(aTHX_ proto->Idef_layerlist, param); + PerlIO_allocate(aTHX); /* root slot is never used */ + PerlIO_debug("Clone %p from %p\n",aTHX,proto); + while ((f = *table)) { + int i; + table = (PerlIO **) (f++); + for (i = 1; i < PERLIO_TABLE_SIZE; i++) { + if (*f) { + (void) fp_dup(f, 0, param); + } + f++; + } + } +#endif +} + +void +PerlIO_destruct(pTHX) { - int code = (*PerlIOBase(f)->tab->Close)(f); - while (*f) - { - PerlIO_pop(f); - } - return code; + PerlIO **table = &PL_perlio; + PerlIO *f; +#ifdef USE_ITHREADS + PerlIO_debug("Destruct %p\n",aTHX); +#endif + while ((f = *table)) { + int i; + table = (PerlIO **) (f++); + for (i = 1; i < PERLIO_TABLE_SIZE; i++) { + PerlIO *x = f; + PerlIOl *l; + while ((l = *x)) { + if (l->tab->kind & PERLIO_K_DESTRUCT) { + PerlIO_debug("Destruct popping %s\n", l->tab->name); + PerlIO_flush(x); + PerlIO_pop(aTHX_ x); + } + else { + x = PerlIONext(x); + } + } + f++; + } + } } +void +PerlIO_pop(pTHX_ PerlIO *f) +{ + PerlIOl *l = *f; + if (l) { + PerlIO_debug("PerlIO_pop f=%p %s\n", (void*)f, l->tab->name); + if (l->tab->Popped) { + /* + * If popped returns non-zero do not free its layer structure + * it has either done so itself, or it is shared and still in + * use + */ + if ((*l->tab->Popped) (aTHX_ f) != 0) + return; + } + *f = l->next;; + Safefree(l); + } +} /*--------------------------------------------------------------------------------------*/ -/* Given the abstraction above the public API functions */ +/* + * XS Interface for perl code + */ -#undef PerlIO_fileno -int -PerlIO_fileno(PerlIO *f) +PerlIO_funcs * +PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load) +{ + IV i; + if ((SSize_t) len <= 0) + len = strlen(name); + for (i = 0; i < PL_known_layers->cur; i++) { + PerlIO_funcs *f = PL_known_layers->array[i].funcs; + if (memEQ(f->name, name, len)) { + PerlIO_debug("%.*s => %p\n", (int) len, name, (void*)f); + return f; + } + } + if (load && PL_subname && PL_def_layerlist + && PL_def_layerlist->cur >= 2) { + SV *pkgsv = newSVpvn("PerlIO", 6); + SV *layer = newSVpvn(name, len); + ENTER; + /* + * The two SVs are magically freed by load_module + */ + Perl_load_module(aTHX_ 0, pkgsv, Nullsv, layer, Nullsv); + LEAVE; + return PerlIO_find_layer(aTHX_ name, len, 0); + } + PerlIO_debug("Cannot find %.*s\n", (int) len, name); + return NULL; +} + +#ifdef USE_ATTRIBUTES_FOR_PERLIO + +static int +perlio_mg_set(pTHX_ SV *sv, MAGIC *mg) +{ + if (SvROK(sv)) { + IO *io = GvIOn((GV *) SvRV(sv)); + PerlIO *ifp = IoIFP(io); + PerlIO *ofp = IoOFP(io); + Perl_warn(aTHX_ "set %" SVf " %p %p %p", sv, io, ifp, ofp); + } + return 0; +} + +static int +perlio_mg_get(pTHX_ SV *sv, MAGIC *mg) { - return (*PerlIOBase(f)->tab->Fileno)(f); + if (SvROK(sv)) { + IO *io = GvIOn((GV *) SvRV(sv)); + PerlIO *ifp = IoIFP(io); + PerlIO *ofp = IoOFP(io); + Perl_warn(aTHX_ "get %" SVf " %p %p %p", sv, io, ifp, ofp); + } + return 0; } -XS(XS_perlio_import) +static int +perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg) { - dXSARGS; - GV *gv = CvGV(cv); - char *s = GvNAME(gv); - STRLEN l = GvNAMELEN(gv); - PerlIO_debug("%.*s\n",(int) l,s); - XSRETURN_EMPTY; + Perl_warn(aTHX_ "clear %" SVf, sv); + return 0; } -XS(XS_perlio_unimport) +static int +perlio_mg_free(pTHX_ SV *sv, MAGIC *mg) { - dXSARGS; - GV *gv = CvGV(cv); - char *s = GvNAME(gv); - STRLEN l = GvNAMELEN(gv); - PerlIO_debug("%.*s\n",(int) l,s); - XSRETURN_EMPTY; + Perl_warn(aTHX_ "free %" SVf, sv); + return 0; } +MGVTBL perlio_vtab = { + perlio_mg_get, + perlio_mg_set, + NULL, /* len */ + perlio_mg_clear, + perlio_mg_free +}; + +XS(XS_io_MODIFY_SCALAR_ATTRIBUTES) +{ + dXSARGS; + SV *sv = SvRV(ST(1)); + AV *av = newAV(); + MAGIC *mg; + int count = 0; + int i; + sv_magic(sv, (SV *) av, PERL_MAGIC_ext, NULL, 0); + SvRMAGICAL_off(sv); + mg = mg_find(sv, PERL_MAGIC_ext); + mg->mg_virtual = &perlio_vtab; + mg_magical(sv); + Perl_warn(aTHX_ "attrib %" SVf, sv); + for (i = 2; i < items; i++) { + STRLEN len; + const char *name = SvPV(ST(i), len); + SV *layer = PerlIO_find_layer(aTHX_ name, len, 1); + if (layer) { + av_push(av, SvREFCNT_inc(layer)); + } + else { + ST(count) = ST(i); + count++; + } + } + SvREFCNT_dec(av); + XSRETURN(count); +} + +#endif /* USE_ATTIBUTES_FOR_PERLIO */ + SV * -PerlIO_find_layer(char *name, STRLEN len) +PerlIO_tab_sv(pTHX_ PerlIO_funcs *tab) +{ + HV *stash = gv_stashpv("PerlIO::Layer", TRUE); + SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))), stash); + return sv; +} + +XS(XS_PerlIO__Layer__find) +{ + dXSARGS; + if (items < 2) + Perl_croak(aTHX_ "Usage class->find(name[,load])"); + else { + STRLEN len = 0; + char *name = SvPV(ST(1), len); + bool load = (items > 2) ? SvTRUE(ST(2)) : 0; + PerlIO_funcs *layer = PerlIO_find_layer(aTHX_ name, len, load); + ST(0) = + (layer) ? sv_2mortal(PerlIO_tab_sv(aTHX_ layer)) : + &PL_sv_undef; + XSRETURN(1); + } +} + +void +PerlIO_define_layer(pTHX_ PerlIO_funcs *tab) { - dTHX; - SV **svp; - SV *sv; - if (len <= 0) - len = strlen(name); - svp = hv_fetch(PerlIO_layer_hv,name,len,0); - if (svp && (sv = *svp) && SvROK(sv)) - return *svp; - return NULL; + if (!PL_known_layers) + PL_known_layers = PerlIO_list_alloc(aTHX); + PerlIO_list_push(aTHX_ PL_known_layers, tab, Nullsv); + PerlIO_debug("define %s %p\n", tab->name, (void*)tab); +} + +int +PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names) +{ + if (names) { + const char *s = names; + while (*s) { + while (isSPACE(*s) || *s == ':') + s++; + if (*s) { + STRLEN llen = 0; + const char *e = s; + const char *as = Nullch; + STRLEN alen = 0; + if (!isIDFIRST(*s)) { + /* + * Message is consistent with how attribute lists are + * passed. Even though this means "foo : : bar" is + * seen as an invalid separator character. + */ + char q = ((*s == '\'') ? '"' : '\''); + if (ckWARN(WARN_LAYER)) + Perl_warner(aTHX_ packWARN(WARN_LAYER), + "perlio: invalid separator character %c%c%c in layer specification list %s", + q, *s, q, s); + SETERRNO(EINVAL, LIB$_INVARG); + return -1; + } + do { + e++; + } while (isALNUM(*e)); + llen = e - s; + if (*e == '(') { + int nesting = 1; + as = ++e; + while (nesting) { + switch (*e++) { + case ')': + if (--nesting == 0) + alen = (e - 1) - as; + break; + case '(': + ++nesting; + break; + case '\\': + /* + * It's a nul terminated string, not allowed + * to \ the terminating null. Anything other + * character is passed over. + */ + if (*e++) { + break; + } + /* + * Drop through + */ + case '\0': + e--; + if (ckWARN(WARN_LAYER)) + Perl_warner(aTHX_ packWARN(WARN_LAYER), + "perlio: argument list not closed for layer \"%.*s\"", + (int) (e - s), s); + return -1; + default: + /* + * boring. + */ + break; + } + } + } + if (e > s) { + bool warn_layer = ckWARN(WARN_LAYER); + PerlIO_funcs *layer = + PerlIO_find_layer(aTHX_ s, llen, 1); + if (layer) { + PerlIO_list_push(aTHX_ av, layer, + (as) ? newSVpvn(as, + alen) : + &PL_sv_undef); + } + else { + if (warn_layer) + Perl_warner(aTHX_ packWARN(WARN_LAYER), "perlio: unknown layer \"%.*s\"", + (int) llen, s); + return -1; + } + } + s = e; + } + } + } + return 0; } void -PerlIO_define_layer(PerlIO_funcs *tab) +PerlIO_default_buffer(pTHX_ PerlIO_list_t *av) { - dTHX; - HV *stash = gv_stashpv("perlio::Layer", TRUE); - SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash); - hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0); + PerlIO_funcs *tab = &PerlIO_perlio; +#ifdef PERLIO_USING_CRLF + tab = &PerlIO_crlf; +#else + if (PerlIO_stdio.Set_ptrcnt) + tab = &PerlIO_stdio; +#endif + PerlIO_debug("Pushing %s\n", tab->name); + PerlIO_list_push(aTHX_ av, PerlIO_find_layer(aTHX_ tab->name, 0, 0), + &PL_sv_undef); +} + +SV * +PerlIO_arg_fetch(PerlIO_list_t *av, IV n) +{ + return av->array[n].arg; } PerlIO_funcs * -PerlIO_default_layer(I32 n) -{ - dTHX; - SV **svp; - SV *layer; - PerlIO_funcs *tab = &PerlIO_stdio; - int len; - if (!PerlIO_layer_hv) - { - char *s = getenv("PERLIO"); - newXS("perlio::import",XS_perlio_import,__FILE__); - newXS("perlio::unimport",XS_perlio_unimport,__FILE__); - PerlIO_layer_hv = get_hv("perlio::layers",GV_ADD|GV_ADDMULTI); - PerlIO_layer_av = get_av("perlio::layers",GV_ADD|GV_ADDMULTI); - PerlIO_define_layer(&PerlIO_unix); - PerlIO_define_layer(&PerlIO_perlio); - PerlIO_define_layer(&PerlIO_stdio); +PerlIO_layer_fetch(pTHX_ PerlIO_list_t *av, IV n, PerlIO_funcs *def) +{ + if (n >= 0 && n < av->cur) { + PerlIO_debug("Layer %" IVdf " is %s\n", n, + av->array[n].funcs->name); + return av->array[n].funcs; + } + if (!def) + Perl_croak(aTHX_ "panic: PerlIO layer array corrupt"); + return def; +} + +PerlIO_list_t * +PerlIO_default_layers(pTHX) +{ + if (!PL_def_layerlist) { + const char *s = (PL_tainting) ? Nullch : PerlEnv_getenv("PERLIO"); + PerlIO_funcs *osLayer = &PerlIO_unix; + PL_def_layerlist = PerlIO_list_alloc(aTHX); + PerlIO_define_layer(aTHX_ & PerlIO_unix); +#if defined(WIN32) && !defined(UNDER_CE) + PerlIO_define_layer(aTHX_ & PerlIO_win32); +#if 0 + osLayer = &PerlIO_win32; +#endif +#endif + PerlIO_define_layer(aTHX_ & PerlIO_raw); + PerlIO_define_layer(aTHX_ & PerlIO_perlio); + PerlIO_define_layer(aTHX_ & PerlIO_stdio); + PerlIO_define_layer(aTHX_ & PerlIO_crlf); #ifdef HAS_MMAP - PerlIO_define_layer(&PerlIO_mmap); -#endif - av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0))); - if (s) - { - while (*s) - { - while (*s && isspace((unsigned char)*s)) - s++; - if (*s) - { - char *e = s; - SV *layer; - while (*e && !isspace((unsigned char)*e)) - e++; - layer = PerlIO_find_layer(s,e-s); - if (layer) - { - PerlIO_debug("Pushing %.*s\n",(e-s),s); - av_push(PerlIO_layer_av,SvREFCNT_inc(layer)); - } - else - Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s); - s = e; - } - } - } - } - len = av_len(PerlIO_layer_av); - if (len < 1) - { - if (PerlIO_stdio.Set_ptrcnt) - { - av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_stdio.name,0))); - } - else - { - av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_perlio.name,0))); - } - len = av_len(PerlIO_layer_av); - } - if (n < 0) - n += len+1; - svp = av_fetch(PerlIO_layer_av,n,0); - if (svp && (layer = *svp) && SvROK(layer) && SvIOK((layer = SvRV(layer)))) - { - tab = INT2PTR(PerlIO_funcs *, SvIV(layer)); - } - /* PerlIO_debug("Layer %d is %s\n",n,tab->name); */ - return tab; -} - -#define PerlIO_default_top() PerlIO_default_layer(-1) -#define PerlIO_default_btm() PerlIO_default_layer(0) + PerlIO_define_layer(aTHX_ & PerlIO_mmap); +#endif + PerlIO_define_layer(aTHX_ & PerlIO_utf8); + PerlIO_define_layer(aTHX_ & PerlIO_byte); + PerlIO_list_push(aTHX_ PL_def_layerlist, + PerlIO_find_layer(aTHX_ osLayer->name, 0, 0), + &PL_sv_undef); + if (s) { + PerlIO_parse_layers(aTHX_ PL_def_layerlist, s); + } + else { + PerlIO_default_buffer(aTHX_ PL_def_layerlist); + } + } + if (PL_def_layerlist->cur < 2) { + PerlIO_default_buffer(aTHX_ PL_def_layerlist); + } + return PL_def_layerlist; +} void -PerlIO_stdstreams() +Perl_boot_core_PerlIO(pTHX) { - if (!_perlio) - { - PerlIO_allocate(); - PerlIO_fdopen(0,"Ir"); - PerlIO_fdopen(1,"Iw"); - PerlIO_fdopen(2,"Iw"); - } +#ifdef USE_ATTRIBUTES_FOR_PERLIO + newXS("io::MODIFY_SCALAR_ATTRIBUTES", XS_io_MODIFY_SCALAR_ATTRIBUTES, + __FILE__); +#endif + newXS("PerlIO::Layer::find", XS_PerlIO__Layer__find, __FILE__); } -PerlIO * -PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode) +PerlIO_funcs * +PerlIO_default_layer(pTHX_ I32 n) { - PerlIOl *l = NULL; - Newc('L',l,tab->size,char,PerlIOl); - if (l) - { - Zero(l,tab->size,char); - l->next = *f; - l->tab = tab; - *f = l; - if ((*l->tab->Pushed)(f,mode) != 0) - { - PerlIO_pop(f); - return NULL; + PerlIO_list_t *av = PerlIO_default_layers(aTHX); + if (n < 0) + n += av->cur; + return PerlIO_layer_fetch(aTHX_ av, n, &PerlIO_stdio); +} + +#define PerlIO_default_top() PerlIO_default_layer(aTHX_ -1) +#define PerlIO_default_btm() PerlIO_default_layer(aTHX_ 0) + +void +PerlIO_stdstreams(pTHX) +{ + if (!PL_perlio) { + PerlIO_allocate(aTHX); + PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT); + PerlIO_fdopen(1, "Iw" PERLIO_STDTEXT); + PerlIO_fdopen(2, "Iw" PERLIO_STDTEXT); } - } - return f; } -#undef PerlIO_fdopen PerlIO * -PerlIO_fdopen(int fd, const char *mode) +PerlIO_push(pTHX_ PerlIO *f, PerlIO_funcs *tab, const char *mode, SV *arg) +{ + PerlIOl *l = NULL; + Newc('L',l,tab->size,char,PerlIOl); + if (l && f) { + Zero(l, tab->size, char); + l->next = *f; + l->tab = tab; + *f = l; + PerlIO_debug("PerlIO_push f=%p %s %s %p\n", (void*)f, tab->name, + (mode) ? mode : "(Null)", (void*)arg); + if ((*l->tab->Pushed) (aTHX_ f, mode, arg) != 0) { + PerlIO_pop(aTHX_ f); + return NULL; + } + } + return f; +} + +IV +PerlIOPop_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) { - PerlIO_funcs *tab = PerlIO_default_top(); - if (!_perlio) - PerlIO_stdstreams(); - return (*tab->Fdopen)(tab,fd,mode); + PerlIO_pop(aTHX_ f); + if (*f) { + PerlIO_flush(f); + PerlIO_pop(aTHX_ f); + return 0; + } + return -1; } -#undef PerlIO_open -PerlIO * -PerlIO_open(const char *path, const char *mode) +IV +PerlIORaw_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + /* + * Remove the dummy layer + */ + PerlIO_pop(aTHX_ f); + /* + * Pop back to bottom layer + */ + if (PerlIOValid(f)) { + PerlIO_flush(f); + while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW)) { + if (*PerlIONext(f)) { + PerlIO_pop(aTHX_ f); + } + else { + /* + * Nothing bellow - push unix on top then remove it + */ + if (PerlIO_push(aTHX_ f, PerlIO_default_btm(), mode, arg)) { + PerlIO_pop(aTHX_ PerlIONext(f)); + } + break; + } + } + PerlIO_debug(":raw f=%p :%s\n", (void*)f, PerlIOBase(f)->tab->name); + return 0; + } + return -1; +} + +int +PerlIO_apply_layera(pTHX_ PerlIO *f, const char *mode, + PerlIO_list_t *layers, IV n, IV max) +{ + int code = 0; + while (n < max) { + PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n, NULL); + if (tab) { + if (!PerlIO_push(aTHX_ f, tab, mode, PerlIOArg)) { + code = -1; + break; + } + } + n++; + } + return code; +} + +int +PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names) +{ + int code = 0; + if (f && names) { + PerlIO_list_t *layers = PerlIO_list_alloc(aTHX); + code = PerlIO_parse_layers(aTHX_ layers, names); + if (code == 0) { + code = PerlIO_apply_layera(aTHX_ f, mode, layers, 0, layers->cur); + } + PerlIO_list_free(aTHX_ layers); + } + return code; +} + + +/*--------------------------------------------------------------------------------------*/ +/* + * Given the abstraction above the public API functions + */ + +int +PerlIO_binmode(pTHX_ PerlIO *f, int iotype, int mode, const char *names) +{ + PerlIO_debug("PerlIO_binmode f=%p %s %c %x %s\n", + (void*)f, PerlIOBase(f)->tab->name, iotype, mode, + (names) ? names : "(Null)"); + if (names) { + /* Do not flush etc. if (e.g.) switching encodings. + if a pushed layer knows it needs to flush lower layers + (for example :unix which is never going to call them) + it can do the flush when it is pushed. + */ + return PerlIO_apply_layers(aTHX_ f, NULL, names) == 0 ? TRUE : FALSE; + } + else { + if (*f) { + /* Turn off UTF-8-ness, to undo UTF-8 locale effects + This may be too simplistic! + */ + PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; + } + /* FIXME?: Looking down the layer stack seems wrong, + but is a way of reaching past (say) an encoding layer + to flip CRLF-ness of the layer(s) below + */ +#ifdef PERLIO_USING_CRLF + /* Legacy binmode only has meaning if O_TEXT has a value distinct from + O_BINARY so we can look for it in mode. + */ + if (!(mode & O_BINARY)) { + /* Text mode */ + while (*f) { + /* Perhaps we should turn on bottom-most aware layer + e.g. Ilya's idea that UNIX TTY could serve + */ + if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { + if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) { + /* Not in text mode - flush any pending stuff and flip it */ + PerlIO_flush(f); + PerlIOBase(f)->flags |= PERLIO_F_CRLF; + } + /* Only need to turn it on in one layer so we are done */ + return TRUE; + } + f = PerlIONext(f); + } + /* Not finding a CRLF aware layer presumably means we are binary + which is not what was requested - so we failed + We _could_ push :crlf layer but so could caller + */ + return FALSE; + } +#endif + /* Either asked for BINMODE or that is normal on this platform + see if any CRLF aware layers are present and turn off the flag + and possibly remove layer. + */ + while (*f) { + if (PerlIOBase(f)->tab->kind & PERLIO_K_CANCRLF) { + if ((PerlIOBase(f)->flags & PERLIO_F_CRLF)) { + /* In text mode - flush any pending stuff and flip it */ + PerlIO_flush(f); + PerlIOBase(f)->flags &= ~PERLIO_F_CRLF; +#ifndef PERLIO_USING_CRLF + /* CRLF is unusual case - if this is just the :crlf layer pop it */ + if (PerlIOBase(f)->tab == &PerlIO_crlf) { + PerlIO_pop(aTHX_ f); + } +#endif + /* Normal case is only one layer doing this, so exit on first + abnormal case can always do multiple binmode calls + */ + return TRUE; + } + } + f = PerlIONext(f); + } + return TRUE; + } +} + +int +PerlIO__close(pTHX_ PerlIO *f) { - PerlIO_funcs *tab = PerlIO_default_top(); - if (!_perlio) - PerlIO_stdstreams(); - return (*tab->Open)(tab,path,mode); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Close) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_reopen -PerlIO * -PerlIO_reopen(const char *path, const char *mode, PerlIO *f) +int +Perl_PerlIO_close(pTHX_ PerlIO *f) +{ + int code = -1; + if (PerlIOValid(f)) { + code = (*PerlIOBase(f)->tab->Close) (aTHX_ f); + while (*f) { + PerlIO_pop(aTHX_ f); + } + } + return code; +} + +int +Perl_PerlIO_fileno(pTHX_ PerlIO *f) { - if (f) - { - PerlIO_flush(f); - if ((*PerlIOBase(f)->tab->Reopen)(path,mode,f) == 0) - { - if ((*PerlIOBase(f)->tab->Pushed)(f,mode) == 0) - return f; + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Fileno) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; } - return NULL; - } - else - return PerlIO_open(path,mode); } -#undef PerlIO_read +static const char * +PerlIO_context_layers(pTHX_ const char *mode) +{ + const char *type = NULL; + /* + * Need to supply default layer info from open.pm + */ + if (PL_curcop) { + SV *layers = PL_curcop->cop_io; + if (layers) { + STRLEN len; + type = SvPV(layers, len); + if (type && mode[0] != 'r') { + /* + * Skip to write part + */ + const char *s = strchr(type, 0); + if (s && (STRLEN)(s - type) < len) { + type = s + 1; + } + } + } + } + return type; +} + +static PerlIO_funcs * +PerlIO_layer_from_ref(pTHX_ SV *sv) +{ + /* + * For any scalar type load the handler which is bundled with perl + */ + if (SvTYPE(sv) < SVt_PVAV) + return PerlIO_find_layer(aTHX_ "Scalar", 6, 1); + + /* + * For other types allow if layer is known but don't try and load it + */ + switch (SvTYPE(sv)) { + case SVt_PVAV: + return PerlIO_find_layer(aTHX_ "Array", 5, 0); + case SVt_PVHV: + return PerlIO_find_layer(aTHX_ "Hash", 4, 0); + case SVt_PVCV: + return PerlIO_find_layer(aTHX_ "Code", 4, 0); + case SVt_PVGV: + return PerlIO_find_layer(aTHX_ "Glob", 4, 0); + } + return NULL; +} + +PerlIO_list_t * +PerlIO_resolve_layers(pTHX_ const char *layers, + const char *mode, int narg, SV **args) +{ + PerlIO_list_t *def = PerlIO_default_layers(aTHX); + int incdef = 1; + if (!PL_perlio) + PerlIO_stdstreams(aTHX); + if (narg) { + SV *arg = *args; + /* + * If it is a reference but not an object see if we have a handler + * for it + */ + if (SvROK(arg) && !sv_isobject(arg)) { + PerlIO_funcs *handler = PerlIO_layer_from_ref(aTHX_ SvRV(arg)); + if (handler) { + def = PerlIO_list_alloc(aTHX); + PerlIO_list_push(aTHX_ def, handler, &PL_sv_undef); + incdef = 0; + } + /* + * Don't fail if handler cannot be found :Via(...) etc. may do + * something sensible else we will just stringfy and open + * resulting string. + */ + } + } + if (!layers) + layers = PerlIO_context_layers(aTHX_ mode); + if (layers && *layers) { + PerlIO_list_t *av; + if (incdef) { + IV i = def->cur; + av = PerlIO_list_alloc(aTHX); + for (i = 0; i < def->cur; i++) { + PerlIO_list_push(aTHX_ av, def->array[i].funcs, + def->array[i].arg); + } + } + else { + av = def; + } + if (PerlIO_parse_layers(aTHX_ av, layers) == 0) { + return av; + } + else { + PerlIO_list_free(aTHX_ av); + return (PerlIO_list_t *) NULL; + } + } + else { + if (incdef) + def->refcnt++; + return def; + } +} + +PerlIO * +PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd, + int imode, int perm, PerlIO *f, int narg, SV **args) +{ + if (!f && narg == 1 && *args == &PL_sv_undef) { + if ((f = PerlIO_tmpfile())) { + if (!layers) + layers = PerlIO_context_layers(aTHX_ mode); + if (layers && *layers) + PerlIO_apply_layers(aTHX_ f, mode, layers); + } + } + else { + PerlIO_list_t *layera = NULL; + IV n; + PerlIO_funcs *tab = NULL; + if (PerlIOValid(f)) { + /* + * This is "reopen" - it is not tested as perl does not use it + * yet + */ + PerlIOl *l = *f; + layera = PerlIO_list_alloc(aTHX); + while (l) { + SV *arg = (l->tab->Getarg) + ? (*l->tab->Getarg) (aTHX_ &l, NULL, 0) + : &PL_sv_undef; + PerlIO_list_push(aTHX_ layera, l->tab, arg); + l = *PerlIONext(&l); + } + } + else { + layera = PerlIO_resolve_layers(aTHX_ layers, mode, narg, args); + if (!layera) { + return NULL; + } + } + /* + * Start at "top" of layer stack + */ + n = layera->cur - 1; + while (n >= 0) { + PerlIO_funcs *t = PerlIO_layer_fetch(aTHX_ layera, n, NULL); + if (t && t->Open) { + tab = t; + break; + } + n--; + } + if (tab) { + /* + * Found that layer 'n' can do opens - call it + */ + if (narg > 1 && !(tab->kind & PERLIO_K_MULTIARG)) { + Perl_croak(aTHX_ "More than one argument to open(,':%s')",tab->name); + } + PerlIO_debug("openn(%s,'%s','%s',%d,%x,%o,%p,%d,%p)\n", + tab->name, layers, mode, fd, imode, perm, + (void*)f, narg, (void*)args); + f = (*tab->Open) (aTHX_ tab, layera, n, mode, fd, imode, perm, + f, narg, args); + if (f) { + if (n + 1 < layera->cur) { + /* + * More layers above the one that we used to open - + * apply them now + */ + if (PerlIO_apply_layera(aTHX_ f, mode, layera, n + 1, layera->cur) != 0) { + /* If pushing layers fails close the file */ + PerlIO_close(f); + f = NULL; + } + } + } + } + PerlIO_list_free(aTHX_ layera); + } + return f; +} + + SSize_t -PerlIO_read(PerlIO *f, void *vbuf, Size_t count) +Perl_PerlIO_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) { - return (*PerlIOBase(f)->tab->Read)(f,vbuf,count); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Read) (aTHX_ f, vbuf, count); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_unread SSize_t -PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count) +Perl_PerlIO_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) { - return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Unread) (aTHX_ f, vbuf, count); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_write SSize_t -PerlIO_write(PerlIO *f, const void *vbuf, Size_t count) +Perl_PerlIO_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) { - return (*PerlIOBase(f)->tab->Write)(f,vbuf,count); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Write) (aTHX_ f, vbuf, count); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_seek int -PerlIO_seek(PerlIO *f, Off_t offset, int whence) +Perl_PerlIO_seek(pTHX_ PerlIO *f, Off_t offset, int whence) { - return (*PerlIOBase(f)->tab->Seek)(f,offset,whence); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Seek) (aTHX_ f, offset, whence); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_tell Off_t -PerlIO_tell(PerlIO *f) +Perl_PerlIO_tell(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Tell)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Tell) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_flush int -PerlIO_flush(PerlIO *f) -{ - if (f) - { - return (*PerlIOBase(f)->tab->Flush)(f); - } - else - { - PerlIO **table = &_perlio; - int code = 0; - while ((f = *table)) - { - int i; - table = (PerlIO **)(f++); - for (i=1; i < PERLIO_TABLE_SIZE; i++) - { - if (*f && PerlIO_flush(f) != 0) - code = -1; - f++; - } - } - return code; - } -} - -#undef PerlIO_fill +Perl_PerlIO_flush(pTHX_ PerlIO *f) +{ + if (f) { + if (*f) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + if (tab && tab->Flush) { + return (*tab->Flush) (aTHX_ f); + } + else { + PerlIO_debug("Cannot flush f=%p :%s\n", (void*)f, tab->name); + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } + } + else { + PerlIO_debug("Cannot flush f=%p\n", (void*)f); + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } + } + else { + /* + * Is it good API design to do flush-all on NULL, a potentially + * errorneous input? Maybe some magical value (PerlIO* + * PERLIO_FLUSH_ALL = (PerlIO*)-1;)? Yes, stdio does similar + * things on fflush(NULL), but should we be bound by their design + * decisions? --jhi + */ + PerlIO **table = &PL_perlio; + int code = 0; + while ((f = *table)) { + int i; + table = (PerlIO **) (f++); + for (i = 1; i < PERLIO_TABLE_SIZE; i++) { + if (*f && PerlIO_flush(f) != 0) + code = -1; + f++; + } + } + return code; + } +} + +void +PerlIOBase_flush_linebuf(pTHX) +{ + PerlIO **table = &PL_perlio; + PerlIO *f; + while ((f = *table)) { + int i; + table = (PerlIO **) (f++); + for (i = 1; i < PERLIO_TABLE_SIZE; i++) { + if (*f + && (PerlIOBase(f)-> + flags & (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) + == (PERLIO_F_LINEBUF | PERLIO_F_CANWRITE)) + PerlIO_flush(f); + f++; + } + } +} + int -PerlIO_fill(PerlIO *f) +Perl_PerlIO_fill(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Fill)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Fill) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_isutf8 int PerlIO_isutf8(PerlIO *f) { - return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; + if (PerlIOValid(f)) + return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0; + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_eof int -PerlIO_eof(PerlIO *f) +Perl_PerlIO_eof(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Eof)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Eof) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_error int -PerlIO_error(PerlIO *f) +Perl_PerlIO_error(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Error)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Error) (aTHX_ f); + else { + SETERRNO(EBADF, SS$_IVCHAN); + return -1; + } } -#undef PerlIO_clearerr void -PerlIO_clearerr(PerlIO *f) +Perl_PerlIO_clearerr(pTHX_ PerlIO *f) { - (*PerlIOBase(f)->tab->Clearerr)(f); + if (PerlIOValid(f)) + (*PerlIOBase(f)->tab->Clearerr) (aTHX_ f); + else + SETERRNO(EBADF, SS$_IVCHAN); } -#undef PerlIO_setlinebuf void -PerlIO_setlinebuf(PerlIO *f) +Perl_PerlIO_setlinebuf(pTHX_ PerlIO *f) { - (*PerlIOBase(f)->tab->Setlinebuf)(f); + if (PerlIOValid(f)) + (*PerlIOBase(f)->tab->Setlinebuf) (aTHX_ f); + else + SETERRNO(EBADF, SS$_IVCHAN); } -#undef PerlIO_has_base int PerlIO_has_base(PerlIO *f) { - if (f && *f) - { - return (PerlIOBase(f)->tab->Get_base != NULL); - } - return 0; + if (PerlIOValid(f)) { + return (PerlIOBase(f)->tab->Get_base != NULL); + } + return 0; } -#undef PerlIO_fast_gets int PerlIO_fast_gets(PerlIO *f) { - if (f && *f) - { - PerlIOl *l = PerlIOBase(f); - return (l->tab->Set_ptrcnt != NULL); - } - return 0; + if (PerlIOValid(f) && (PerlIOBase(f)->flags & PERLIO_F_FASTGETS)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + return (tab->Set_ptrcnt != NULL); + } + return 0; } -#undef PerlIO_has_cntptr int PerlIO_has_cntptr(PerlIO *f) { - if (f && *f) - { - PerlIO_funcs *tab = PerlIOBase(f)->tab; - return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); - } - return 0; + if (PerlIOValid(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + return (tab->Get_ptr != NULL && tab->Get_cnt != NULL); + } + return 0; } -#undef PerlIO_canset_cnt int PerlIO_canset_cnt(PerlIO *f) { - if (f && *f) - { - PerlIOl *l = PerlIOBase(f); - return (l->tab->Set_ptrcnt != NULL); - } - return 0; + if (PerlIOValid(f)) { + PerlIOl *l = PerlIOBase(f); + return (l->tab->Set_ptrcnt != NULL); + } + return 0; } -#undef PerlIO_get_base STDCHAR * -PerlIO_get_base(PerlIO *f) +Perl_PerlIO_get_base(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Get_base)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Get_base) (aTHX_ f); + return NULL; } -#undef PerlIO_get_bufsiz int -PerlIO_get_bufsiz(PerlIO *f) +Perl_PerlIO_get_bufsiz(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Get_bufsiz)(f); + if (PerlIOValid(f)) + return (*PerlIOBase(f)->tab->Get_bufsiz) (aTHX_ f); + return 0; } -#undef PerlIO_get_ptr STDCHAR * -PerlIO_get_ptr(PerlIO *f) +Perl_PerlIO_get_ptr(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Get_ptr)(f); + if (PerlIOValid(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + if (tab->Get_ptr == NULL) + return NULL; + return (*tab->Get_ptr) (aTHX_ f); + } + return NULL; } -#undef PerlIO_get_cnt int -PerlIO_get_cnt(PerlIO *f) +Perl_PerlIO_get_cnt(pTHX_ PerlIO *f) { - return (*PerlIOBase(f)->tab->Get_cnt)(f); + if (PerlIOValid(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + if (tab->Get_cnt == NULL) + return 0; + return (*tab->Get_cnt) (aTHX_ f); + } + return 0; } -#undef PerlIO_set_cnt void -PerlIO_set_cnt(PerlIO *f,int cnt) +Perl_PerlIO_set_cnt(pTHX_ PerlIO *f, int cnt) { - (*PerlIOBase(f)->tab->Set_ptrcnt)(f,NULL,cnt); + if (PerlIOValid(f)) { + (*PerlIOBase(f)->tab->Set_ptrcnt) (aTHX_ f, NULL, cnt); + } } -#undef PerlIO_set_ptrcnt void -PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt) -{ - (*PerlIOBase(f)->tab->Set_ptrcnt)(f,ptr,cnt); +Perl_PerlIO_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, int cnt) +{ + if (PerlIOValid(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + if (tab->Set_ptrcnt == NULL) { + Perl_croak(aTHX_ "PerlIO buffer snooping abuse"); + } + (*PerlIOBase(f)->tab->Set_ptrcnt) (aTHX_ f, ptr, cnt); + } } /*--------------------------------------------------------------------------------------*/ -/* "Methods" of the "base class" */ +/* + * utf8 and raw dummy layers + */ IV -PerlIOBase_fileno(PerlIO *f) +PerlIOUtf8_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + if (*PerlIONext(f)) { + PerlIO_funcs *tab = PerlIOBase(f)->tab; + PerlIO_pop(aTHX_ f); + if (tab->kind & PERLIO_K_UTF8) + PerlIOBase(f)->flags |= PERLIO_F_UTF8; + else + PerlIOBase(f)->flags &= ~PERLIO_F_UTF8; + return 0; + } + return -1; +} + +PerlIO_funcs PerlIO_utf8 = { + "utf8", + sizeof(PerlIOl), + PERLIO_K_DUMMY | PERLIO_K_UTF8, + PerlIOUtf8_pushed, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, /* flush */ + NULL, /* fill */ + NULL, + NULL, + NULL, + NULL, + NULL, /* get_base */ + NULL, /* get_bufsiz */ + NULL, /* get_ptr */ + NULL, /* get_cnt */ + NULL, /* set_ptrcnt */ +}; + +PerlIO_funcs PerlIO_byte = { + "bytes", + sizeof(PerlIOl), + PERLIO_K_DUMMY, + PerlIOUtf8_pushed, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, /* flush */ + NULL, /* fill */ + NULL, + NULL, + NULL, + NULL, + NULL, /* get_base */ + NULL, /* get_bufsiz */ + NULL, /* get_ptr */ + NULL, /* get_cnt */ + NULL, /* set_ptrcnt */ +}; + +PerlIO * +PerlIORaw_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, + IV n, const char *mode, int fd, int imode, int perm, + PerlIO *old, int narg, SV **args) +{ + PerlIO_funcs *tab = PerlIO_default_btm(); + return (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, + old, narg, args); +} + +PerlIO_funcs PerlIO_raw = { + "raw", + sizeof(PerlIOl), + PERLIO_K_DUMMY, + PerlIORaw_pushed, + PerlIOBase_popped, + PerlIORaw_open, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, /* flush */ + NULL, /* fill */ + NULL, + NULL, + NULL, + NULL, + NULL, /* get_base */ + NULL, /* get_bufsiz */ + NULL, /* get_ptr */ + NULL, /* get_cnt */ + NULL, /* set_ptrcnt */ +}; +/*--------------------------------------------------------------------------------------*/ +/*--------------------------------------------------------------------------------------*/ +/* + * "Methods" of the "base class" + */ + +IV +PerlIOBase_fileno(pTHX_ PerlIO *f) { - return PerlIO_fileno(PerlIONext(f)); + return PerlIOValid(f) ? PerlIO_fileno(PerlIONext(f)) : -1; +} + +char * +PerlIO_modestr(PerlIO *f, char *buf) +{ + char *s = buf; + IV flags = PerlIOBase(f)->flags; + if (flags & PERLIO_F_APPEND) { + *s++ = 'a'; + if (flags & PERLIO_F_CANREAD) { + *s++ = '+'; + } + } + else if (flags & PERLIO_F_CANREAD) { + *s++ = 'r'; + if (flags & PERLIO_F_CANWRITE) + *s++ = '+'; + } + else if (flags & PERLIO_F_CANWRITE) { + *s++ = 'w'; + if (flags & PERLIO_F_CANREAD) { + *s++ = '+'; + } + } +#ifdef PERLIO_USING_CRLF + if (!(flags & PERLIO_F_CRLF)) + *s++ = 'b'; +#endif + *s = '\0'; + return buf; } IV -PerlIOBase_pushed(PerlIO *f, const char *mode) -{ - PerlIOl *l = PerlIOBase(f); - l->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE| - PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); - if (mode) - { - switch (*mode++) - { - case 'r': - l->flags = PERLIO_F_CANREAD; - break; - case 'a': - l->flags = PERLIO_F_APPEND|PERLIO_F_CANWRITE; - break; - case 'w': - l->flags = PERLIO_F_TRUNCATE|PERLIO_F_CANWRITE; - break; - default: - errno = EINVAL; - return -1; - } - while (*mode) - { - switch (*mode++) - { - case '+': - l->flags |= PERLIO_F_CANREAD|PERLIO_F_CANWRITE; - break; - case 'b': - l->flags |= PERLIO_F_BINARY; - break; - default: - errno = EINVAL; - return -1; - } - } - } - else - { - if (l->next) - { - l->flags |= l->next->flags & - (PERLIO_F_CANREAD|PERLIO_F_CANWRITE| - PERLIO_F_TRUNCATE|PERLIO_F_APPEND|PERLIO_F_BINARY); - } - } - return 0; +PerlIOBase_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + PerlIOl *l = PerlIOBase(f); +#if 0 + const char *omode = mode; + char temp[8]; +#endif + PerlIO_funcs *tab = PerlIOBase(f)->tab; + l->flags &= ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | + PERLIO_F_TRUNCATE | PERLIO_F_APPEND); + if (tab->Set_ptrcnt != NULL) + l->flags |= PERLIO_F_FASTGETS; + if (mode) { + if (*mode == '#' || *mode == 'I') + mode++; + switch (*mode++) { + case 'r': + l->flags |= PERLIO_F_CANREAD; + break; + case 'a': + l->flags |= PERLIO_F_APPEND | PERLIO_F_CANWRITE; + break; + case 'w': + l->flags |= PERLIO_F_TRUNCATE | PERLIO_F_CANWRITE; + break; + default: + SETERRNO(EINVAL, LIB$_INVARG); + return -1; + } + while (*mode) { + switch (*mode++) { + case '+': + l->flags |= PERLIO_F_CANREAD | PERLIO_F_CANWRITE; + break; + case 'b': + l->flags &= ~PERLIO_F_CRLF; + break; + case 't': + l->flags |= PERLIO_F_CRLF; + break; + default: + SETERRNO(EINVAL, LIB$_INVARG); + return -1; + } + } + } + else { + if (l->next) { + l->flags |= l->next->flags & + (PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_TRUNCATE | + PERLIO_F_APPEND); + } + } +#if 0 + PerlIO_debug("PerlIOBase_pushed f=%p %s %s fl=%08" UVxf " (%s)\n", + f, PerlIOBase(f)->tab->name, (omode) ? omode : "(Null)", + l->flags, PerlIO_modestr(f, temp)); +#endif + return 0; } IV -PerlIOBase_popped(PerlIO *f) +PerlIOBase_popped(pTHX_ PerlIO *f) { - return 0; + return 0; } SSize_t -PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count) +PerlIOBase_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) { - Off_t old = PerlIO_tell(f); - if (PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0) - { - Off_t new = PerlIO_tell(f); - return old - new; - } - return 0; + /* + * Save the position as current head considers it + */ + Off_t old = PerlIO_tell(f); + SSize_t done; + PerlIO_push(aTHX_ f, &PerlIO_pending, "r", Nullsv); + PerlIOSelf(f, PerlIOBuf)->posn = old; + done = PerlIOBuf_unread(aTHX_ f, vbuf, count); + return done; +} + +SSize_t +PerlIOBase_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) +{ + STDCHAR *buf = (STDCHAR *) vbuf; + if (f) { + if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) + return 0; + while (count > 0) { + SSize_t avail = PerlIO_get_cnt(f); + SSize_t take = 0; + if (avail > 0) + take = ((SSize_t)count < avail) ? count : avail; + if (take > 0) { + STDCHAR *ptr = PerlIO_get_ptr(f); + Copy(ptr, buf, take, STDCHAR); + PerlIO_set_ptrcnt(f, ptr + take, (avail -= take)); + count -= take; + buf += take; + } + if (count > 0 && avail <= 0) { + if (PerlIO_fill(f) != 0) + break; + } + } + return (buf - (STDCHAR *) vbuf); + } + return 0; } IV -PerlIOBase_noop_ok(PerlIO *f) +PerlIOBase_noop_ok(pTHX_ PerlIO *f) { - return 0; + return 0; } IV -PerlIOBase_noop_fail(PerlIO *f) +PerlIOBase_noop_fail(pTHX_ PerlIO *f) { - return -1; + return -1; } IV -PerlIOBase_close(PerlIO *f) +PerlIOBase_close(pTHX_ PerlIO *f) { - IV code = 0; - if (PerlIO_flush(f) != 0) - code = -1; - if (PerlIO_close(PerlIONext(f)) != 0) - code = -1; - PerlIOBase(f)->flags &= ~(PERLIO_F_CANREAD|PERLIO_F_CANWRITE|PERLIO_F_OPEN); - return code; + IV code = 0; + PerlIO *n = PerlIONext(f); + if (PerlIO_flush(f) != 0) + code = -1; + if (PerlIOValid(n) && (*PerlIOBase(n)->tab->Close)(aTHX_ n) != 0) + code = -1; + PerlIOBase(f)->flags &= + ~(PERLIO_F_CANREAD | PERLIO_F_CANWRITE | PERLIO_F_OPEN); + return code; } IV -PerlIOBase_eof(PerlIO *f) +PerlIOBase_eof(pTHX_ PerlIO *f) { - if (f && *f) - { - return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; - } - return 1; + if (PerlIOValid(f)) { + return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0; + } + return 1; } IV -PerlIOBase_error(PerlIO *f) +PerlIOBase_error(pTHX_ PerlIO *f) { - if (f && *f) - { - return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; - } - return 1; + if (PerlIOValid(f)) { + return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0; + } + return 1; } void -PerlIOBase_clearerr(PerlIO *f) +PerlIOBase_clearerr(pTHX_ PerlIO *f) { - if (f && *f) - { - PerlIOBase(f)->flags &= ~PERLIO_F_ERROR; - } + if (PerlIOValid(f)) { + PerlIO *n = PerlIONext(f); + PerlIOBase(f)->flags &= ~(PERLIO_F_ERROR | PERLIO_F_EOF); + if (PerlIOValid(n)) + PerlIO_clearerr(n); + } } void -PerlIOBase_setlinebuf(PerlIO *f) +PerlIOBase_setlinebuf(pTHX_ PerlIO *f) { + if (PerlIOValid(f)) { + PerlIOBase(f)->flags |= PERLIO_F_LINEBUF; + } +} +SV * +PerlIO_sv_dup(pTHX_ SV *arg, CLONE_PARAMS *param) +{ + if (!arg) + return Nullsv; +#ifdef sv_dup + if (param) { + return sv_dup(arg, param); + } + else { + return newSVsv(arg); + } +#else + return newSVsv(arg); +#endif } -/*--------------------------------------------------------------------------------------*/ -/* Bottom-most level for UNIX-like case */ +PerlIO * +PerlIOBase_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) +{ + PerlIO *nexto = PerlIONext(o); + if (PerlIOValid(nexto)) { + PerlIO_funcs *tab = PerlIOBase(nexto)->tab; + f = (*tab->Dup)(aTHX_ f, nexto, param, flags); + } + if (f) { + PerlIO_funcs *self = PerlIOBase(o)->tab; + SV *arg = Nullsv; + char buf[8]; + PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n", + self->name, (void*)f, (void*)o, (void*)param); + if (self->Getarg) { + arg = (*self->Getarg)(aTHX_ o,param,flags); + } + f = PerlIO_push(aTHX_ f, self, PerlIO_modestr(o,buf), arg); + if (arg) { + SvREFCNT_dec(arg); + } + } + return f; +} + +#define PERLIO_MAX_REFCOUNTABLE_FD 2048 +#ifdef USE_THREADS +perl_mutex PerlIO_mutex; +#endif +int PerlIO_fd_refcnt[PERLIO_MAX_REFCOUNTABLE_FD]; + +void +PerlIO_init(pTHX) +{ + /* Place holder for stdstreams call ??? */ +#ifdef USE_THREADS + MUTEX_INIT(&PerlIO_mutex); +#endif +} + +void +PerlIOUnix_refcnt_inc(int fd) +{ + if (fd >= 0 && fd < PERLIO_MAX_REFCOUNTABLE_FD) { +#ifdef USE_THREADS + MUTEX_LOCK(&PerlIO_mutex); +#endif + PerlIO_fd_refcnt[fd]++; + PerlIO_debug("fd %d refcnt=%d\n",fd,PerlIO_fd_refcnt[fd]); +#ifdef USE_THREADS + MUTEX_UNLOCK(&PerlIO_mutex); +#endif + } +} + +int +PerlIOUnix_refcnt_dec(int fd) +{ + int cnt = 0; + if (fd >= 0 && fd < PERLIO_MAX_REFCOUNTABLE_FD) { +#ifdef USE_THREADS + MUTEX_LOCK(&PerlIO_mutex); +#endif + cnt = --PerlIO_fd_refcnt[fd]; + PerlIO_debug("fd %d refcnt=%d\n",fd,cnt); +#ifdef USE_THREADS + MUTEX_UNLOCK(&PerlIO_mutex); +#endif + } + return cnt; +} -typedef struct +void +PerlIO_cleanup(pTHX) { - struct _PerlIO base; /* The generic part */ - int fd; /* UNIX like file descriptor */ - int oflags; /* open/fcntl flags */ + int i; +#ifdef USE_ITHREADS + PerlIO_debug("Cleanup layers for %p\n",aTHX); +#else + PerlIO_debug("Cleanup layers\n"); +#endif + /* Raise STDIN..STDERR refcount so we don't close them */ + for (i=0; i < 3; i++) + PerlIOUnix_refcnt_inc(i); + PerlIO_cleantable(aTHX_ &PL_perlio); + /* Restore STDIN..STDERR refcount */ + for (i=0; i < 3; i++) + PerlIOUnix_refcnt_dec(i); + + if (PL_known_layers) { + PerlIO_list_free(aTHX_ PL_known_layers); + PL_known_layers = NULL; + } + if(PL_def_layerlist) { + PerlIO_list_free(aTHX_ PL_def_layerlist); + PL_def_layerlist = NULL; + } +} + + + +/*--------------------------------------------------------------------------------------*/ +/* + * Bottom-most level for UNIX-like case + */ + +typedef struct { + struct _PerlIO base; /* The generic part */ + int fd; /* UNIX like file descriptor */ + int oflags; /* open/fcntl flags */ } PerlIOUnix; int PerlIOUnix_oflags(const char *mode) { - int oflags = -1; - switch(*mode) - { - case 'r': - oflags = O_RDONLY; - if (*++mode == '+') - { - oflags = O_RDWR; - mode++; - } - break; - - case 'w': - oflags = O_CREAT|O_TRUNC; - if (*++mode == '+') - { - oflags |= O_RDWR; - mode++; - } - else - oflags |= O_WRONLY; - break; - - case 'a': - oflags = O_CREAT|O_APPEND; - if (*++mode == '+') - { - oflags |= O_RDWR; - mode++; - } - else - oflags |= O_WRONLY; - break; - } - if (*mode || oflags == -1) - { - errno = EINVAL; - oflags = -1; - } - return oflags; + int oflags = -1; + if (*mode == 'I' || *mode == '#') + mode++; + switch (*mode) { + case 'r': + oflags = O_RDONLY; + if (*++mode == '+') { + oflags = O_RDWR; + mode++; + } + break; + + case 'w': + oflags = O_CREAT | O_TRUNC; + if (*++mode == '+') { + oflags |= O_RDWR; + mode++; + } + else + oflags |= O_WRONLY; + break; + + case 'a': + oflags = O_CREAT | O_APPEND; + if (*++mode == '+') { + oflags |= O_RDWR; + mode++; + } + else + oflags |= O_WRONLY; + break; + } + if (*mode == 'b') { + oflags |= O_BINARY; + oflags &= ~O_TEXT; + mode++; + } + else if (*mode == 't') { + oflags |= O_TEXT; + oflags &= ~O_BINARY; + mode++; + } + /* + * Always open in binary mode + */ + oflags |= O_BINARY; + if (*mode || oflags == -1) { + SETERRNO(EINVAL, LIB$_INVARG); + oflags = -1; + } + return oflags; } IV -PerlIOUnix_fileno(PerlIO *f) +PerlIOUnix_fileno(pTHX_ PerlIO *f) { - return PerlIOSelf(f,PerlIOUnix)->fd; + return PerlIOSelf(f, PerlIOUnix)->fd; +} + +IV +PerlIOUnix_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + IV code = PerlIOBase_pushed(aTHX_ f, mode, arg); + PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix); + if (*PerlIONext(f)) { + /* We never call down so any pending stuff now */ + PerlIO_flush(PerlIONext(f)); + s->fd = PerlIO_fileno(PerlIONext(f)); + /* + * XXX could (or should) we retrieve the oflags from the open file + * handle rather than believing the "mode" we are passed in? XXX + * Should the value on NULL mode be 0 or -1? + */ + s->oflags = mode ? PerlIOUnix_oflags(mode) : -1; + } + PerlIOBase(f)->flags |= PERLIO_F_OPEN; + return code; } PerlIO * -PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode) +PerlIOUnix_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, + IV n, const char *mode, int fd, int imode, + int perm, PerlIO *f, int narg, SV **args) { - PerlIO *f = NULL; - if (*mode == 'I') - mode++; - if (fd >= 0) - { - int oflags = PerlIOUnix_oflags(mode); - if (oflags != -1) - { - PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); - s->fd = fd; - s->oflags = oflags; - PerlIOBase(f)->flags |= PERLIO_F_OPEN; + if (PerlIOValid(f)) { + if (PerlIOBase(f)->flags & PERLIO_F_OPEN) + (*PerlIOBase(f)->tab->Close)(aTHX_ f); + } + if (narg > 0) { + char *path = SvPV_nolen(*args); + if (*mode == '#') + mode++; + else { + imode = PerlIOUnix_oflags(mode); + perm = 0666; + } + if (imode != -1) { + fd = PerlLIO_open3(path, imode, perm); + } + } + if (fd >= 0) { + PerlIOUnix *s; + if (*mode == 'I') + mode++; + if (!f) { + f = PerlIO_allocate(aTHX); + } + if (!PerlIOValid(f)) { + s = PerlIOSelf(PerlIO_push(aTHX_ f, self, mode, PerlIOArg), + PerlIOUnix); + } + else { + s = PerlIOSelf(f, PerlIOUnix); + } + s->fd = fd; + s->oflags = imode; + PerlIOBase(f)->flags |= PERLIO_F_OPEN; + PerlIOUnix_refcnt_inc(fd); + return f; + } + else { + if (f) { + /* + * FIXME: pop layers ??? + */ + } + return NULL; } - } - return f; } PerlIO * -PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode) +PerlIOUnix_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) { - PerlIO *f = NULL; - int oflags = PerlIOUnix_oflags(mode); - if (oflags != -1) - { - int fd = open(path,oflags,0666); - if (fd >= 0) - { - PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOUnix); - s->fd = fd; - s->oflags = oflags; - PerlIOBase(f)->flags |= PERLIO_F_OPEN; + PerlIOUnix *os = PerlIOSelf(o, PerlIOUnix); + int fd = os->fd; + if (flags & PERLIO_DUP_FD) { + fd = PerlLIO_dup(fd); } - } - return f; + if (fd >= 0 && fd < PERLIO_MAX_REFCOUNTABLE_FD) { + f = PerlIOBase_dup(aTHX_ f, o, param, flags); + if (f) { + /* If all went well overwrite fd in dup'ed lay with the dup()'ed fd */ + PerlIOUnix *s = PerlIOSelf(f, PerlIOUnix); + s->fd = fd; + PerlIOUnix_refcnt_inc(fd); + return f; + } + } + return NULL; } -int -PerlIOUnix_reopen(const char *path, const char *mode, PerlIO *f) -{ - PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix); - int oflags = PerlIOUnix_oflags(mode); - if (PerlIOBase(f)->flags & PERLIO_F_OPEN) - (*PerlIOBase(f)->tab->Close)(f); - if (oflags != -1) - { - int fd = open(path,oflags,0666); - if (fd >= 0) - { - s->fd = fd; - s->oflags = oflags; - PerlIOBase(f)->flags |= PERLIO_F_OPEN; - return 0; - } - } - return -1; -} SSize_t -PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count) -{ - int fd = PerlIOSelf(f,PerlIOUnix)->fd; - if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) - return 0; - while (1) - { - SSize_t len = read(fd,vbuf,count); - if (len >= 0 || errno != EINTR) - { - if (len < 0) - PerlIOBase(f)->flags |= PERLIO_F_ERROR; - else if (len == 0 && count != 0) - PerlIOBase(f)->flags |= PERLIO_F_EOF; - return len; +PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) +{ + int fd = PerlIOSelf(f, PerlIOUnix)->fd; + if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) + return 0; + while (1) { + SSize_t len = PerlLIO_read(fd, vbuf, count); + if (len >= 0 || errno != EINTR) { + if (len < 0) + PerlIOBase(f)->flags |= PERLIO_F_ERROR; + else if (len == 0 && count != 0) + PerlIOBase(f)->flags |= PERLIO_F_EOF; + return len; + } + PERL_ASYNC_CHECK(); } - } } SSize_t -PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count) -{ - int fd = PerlIOSelf(f,PerlIOUnix)->fd; - while (1) - { - SSize_t len = write(fd,vbuf,count); - if (len >= 0 || errno != EINTR) - { - if (len < 0) - PerlIOBase(f)->flags |= PERLIO_F_ERROR; - return len; +PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + int fd = PerlIOSelf(f, PerlIOUnix)->fd; + while (1) { + SSize_t len = PerlLIO_write(fd, vbuf, count); + if (len >= 0 || errno != EINTR) { + if (len < 0) + PerlIOBase(f)->flags |= PERLIO_F_ERROR; + return len; + } + PERL_ASYNC_CHECK(); } - } } IV -PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence) +PerlIOUnix_seek(pTHX_ PerlIO *f, Off_t offset, int whence) { - Off_t new = lseek(PerlIOSelf(f,PerlIOUnix)->fd,offset,whence); - PerlIOBase(f)->flags &= ~PERLIO_F_EOF; - return (new == (Off_t) -1) ? -1 : 0; + Off_t new = + PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, offset, whence); + PerlIOBase(f)->flags &= ~PERLIO_F_EOF; + return (new == (Off_t) - 1) ? -1 : 0; } Off_t -PerlIOUnix_tell(PerlIO *f) +PerlIOUnix_tell(pTHX_ PerlIO *f) { - return lseek(PerlIOSelf(f,PerlIOUnix)->fd,0,SEEK_CUR); + return PerlLIO_lseek(PerlIOSelf(f, PerlIOUnix)->fd, 0, SEEK_CUR); } + IV -PerlIOUnix_close(PerlIO *f) -{ - int fd = PerlIOSelf(f,PerlIOUnix)->fd; - int code = 0; - while (close(fd) != 0) - { - if (errno != EINTR) - { - code = -1; - break; +PerlIOUnix_close(pTHX_ PerlIO *f) +{ + int fd = PerlIOSelf(f, PerlIOUnix)->fd; + int code = 0; + if (PerlIOBase(f)->flags & PERLIO_F_OPEN) { + if (PerlIOUnix_refcnt_dec(fd) > 0) { + PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; + return 0; + } + } + else { + SETERRNO(EBADF,SS$_IVCHAN); + return -1; } - } - if (code == 0) - { - PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; - } - return code; + while (PerlLIO_close(fd) != 0) { + if (errno != EINTR) { + code = -1; + break; + } + PERL_ASYNC_CHECK(); + } + if (code == 0) { + PerlIOBase(f)->flags &= ~PERLIO_F_OPEN; + } + return code; } PerlIO_funcs PerlIO_unix = { - "unix", - sizeof(PerlIOUnix), - 0, - PerlIOUnix_fileno, - PerlIOUnix_fdopen, - PerlIOUnix_open, - PerlIOUnix_reopen, - PerlIOBase_pushed, - PerlIOBase_noop_ok, - PerlIOUnix_read, - PerlIOBase_unread, - PerlIOUnix_write, - PerlIOUnix_seek, - PerlIOUnix_tell, - PerlIOUnix_close, - PerlIOBase_noop_ok, /* flush */ - PerlIOBase_noop_fail, /* fill */ - PerlIOBase_eof, - PerlIOBase_error, - PerlIOBase_clearerr, - PerlIOBase_setlinebuf, - NULL, /* get_base */ - NULL, /* get_bufsiz */ - NULL, /* get_ptr */ - NULL, /* get_cnt */ - NULL, /* set_ptrcnt */ + "unix", + sizeof(PerlIOUnix), + PERLIO_K_RAW, + PerlIOUnix_pushed, + PerlIOBase_popped, + PerlIOUnix_open, + NULL, + PerlIOUnix_fileno, + PerlIOUnix_dup, + PerlIOUnix_read, + PerlIOBase_unread, + PerlIOUnix_write, + PerlIOUnix_seek, + PerlIOUnix_tell, + PerlIOUnix_close, + PerlIOBase_noop_ok, /* flush */ + PerlIOBase_noop_fail, /* fill */ + PerlIOBase_eof, + PerlIOBase_error, + PerlIOBase_clearerr, + PerlIOBase_setlinebuf, + NULL, /* get_base */ + NULL, /* get_bufsiz */ + NULL, /* get_ptr */ + NULL, /* get_cnt */ + NULL, /* set_ptrcnt */ }; /*--------------------------------------------------------------------------------------*/ -/* stdio as a layer */ +/* + * stdio as a layer + */ + +#if defined(VMS) && !defined(STDIO_BUFFER_WRITABLE) +/* perl5.8 - This ensures the last minute VMS ungetc fix is not + broken by the last second glibc 2.3 fix + */ +#define STDIO_BUFFER_WRITABLE +#endif + + +typedef struct { + struct _PerlIO base; + FILE *stdio; /* The stream */ +} PerlIOStdio; + +IV +PerlIOStdio_fileno(pTHX_ PerlIO *f) +{ + return PerlSIO_fileno(PerlIOSelf(f, PerlIOStdio)->stdio); +} -typedef struct +char * +PerlIOStdio_mode(const char *mode, char *tmode) { - struct _PerlIO base; - FILE * stdio; /* The stream */ -} PerlIOStdio; + char *ret = tmode; + while (*mode) { + *tmode++ = *mode++; + } +#ifdef PERLIO_USING_CRLF + *tmode++ = 'b'; +#endif + *tmode = '\0'; + return ret; +} +/* + * This isn't used yet ... + */ IV -PerlIOStdio_fileno(PerlIO *f) -{ - return fileno(PerlIOSelf(f,PerlIOStdio)->stdio); +PerlIOStdio_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + if (*PerlIONext(f)) { + PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio); + char tmode[8]; + FILE *stdio = + PerlSIO_fdopen(PerlIO_fileno(PerlIONext(f)), mode = + PerlIOStdio_mode(mode, tmode)); + if (stdio) { + s->stdio = stdio; + /* We never call down so any pending stuff now */ + PerlIO_flush(PerlIONext(f)); + } + else + return -1; + } + return PerlIOBase_pushed(aTHX_ f, mode, arg); } PerlIO * -PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode) -{ - PerlIO *f = NULL; - int init = 0; - if (*mode == 'I') - { - init = 1; - mode++; - } - if (fd >= 0) - { - FILE *stdio = NULL; - if (init) - { - switch(fd) - { - case 0: - stdio = stdin; - break; - case 1: - stdio = stdout; - break; - case 2: - stdio = stderr; - break; - } - } - else - stdio = fdopen(fd,mode); - if (stdio) - { - PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); - s->stdio = stdio; - } - } - return f; -} - -#undef PerlIO_importFILE -PerlIO * PerlIO_importFILE(FILE *stdio, int fl) { - PerlIO *f = NULL; - if (stdio) - { - PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),&PerlIO_stdio,"r+"),PerlIOStdio); - s->stdio = stdio; - } - return f; + dTHX; + PerlIO *f = NULL; + if (stdio) { + /* We need to probe to see how we can open the stream + so start with read/write and then try write and read + we dup() so that we can fclose without loosing the fd. + + Note that the errno value set by a failing fdopen + varies between stdio implementations. + */ + int fd = PerlLIO_dup(fileno(stdio)); + char *mode = "r+"; + FILE *f2 = fdopen(fd, mode); + PerlIOStdio *s; + if (!f2) { + mode = "w"; + f2 = fdopen(fd, mode); + } + if (!f2) { + mode = "r"; + f2 = fdopen(fd, mode); + } + if (!f2) { + /* Don't seem to be able to open */ + PerlLIO_close(fd); + return f; + } + fclose(f2); + s = PerlIOSelf(PerlIO_push + (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio, + mode, Nullsv), PerlIOStdio); + s->stdio = stdio; + } + return f; } PerlIO * -PerlIOStdio_open(PerlIO_funcs *self, const char *path,const char *mode) -{ - PerlIO *f = NULL; - FILE *stdio = fopen(path,mode); - if (stdio) - { - PerlIOStdio *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(),self,mode),PerlIOStdio); - s->stdio = stdio; - } - return f; +PerlIOStdio_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, + IV n, const char *mode, int fd, int imode, + int perm, PerlIO *f, int narg, SV **args) +{ + char tmode[8]; + if (PerlIOValid(f)) { + char *path = SvPV_nolen(*args); + PerlIOStdio *s = PerlIOSelf(f, PerlIOStdio); + FILE *stdio; + PerlIOUnix_refcnt_dec(fileno(s->stdio)); + stdio = PerlSIO_freopen(path, (mode = PerlIOStdio_mode(mode, tmode)), + s->stdio); + if (!s->stdio) + return NULL; + s->stdio = stdio; + PerlIOUnix_refcnt_inc(fileno(s->stdio)); + return f; + } + else { + if (narg > 0) { + char *path = SvPV_nolen(*args); + if (*mode == '#') { + mode++; + fd = PerlLIO_open3(path, imode, perm); + } + else { + FILE *stdio = PerlSIO_fopen(path, mode); + if (stdio) { + PerlIOStdio *s; + if (!f) { + f = PerlIO_allocate(aTHX); + } + s = PerlIOSelf(PerlIO_push(aTHX_ f, self, + (mode = PerlIOStdio_mode(mode, tmode)), + PerlIOArg), + PerlIOStdio); + s->stdio = stdio; + PerlIOUnix_refcnt_inc(fileno(s->stdio)); + } + return f; + } + } + if (fd >= 0) { + FILE *stdio = NULL; + int init = 0; + if (*mode == 'I') { + init = 1; + mode++; + } + if (init) { + switch (fd) { + case 0: + stdio = PerlSIO_stdin; + break; + case 1: + stdio = PerlSIO_stdout; + break; + case 2: + stdio = PerlSIO_stderr; + break; + } + } + else { + stdio = PerlSIO_fdopen(fd, mode = + PerlIOStdio_mode(mode, tmode)); + } + if (stdio) { + PerlIOStdio *s; + if (!f) { + f = PerlIO_allocate(aTHX); + } + s = PerlIOSelf(PerlIO_push(aTHX_ f, self, mode, PerlIOArg), PerlIOStdio); + s->stdio = stdio; + PerlIOUnix_refcnt_inc(fileno(s->stdio)); + return f; + } + } + } + return NULL; } -int -PerlIOStdio_reopen(const char *path, const char *mode, PerlIO *f) -{ - PerlIOStdio *s = PerlIOSelf(f,PerlIOStdio); - FILE *stdio = freopen(path,mode,s->stdio); - if (!s->stdio) - return -1; - s->stdio = stdio; - return 0; +PerlIO * +PerlIOStdio_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) +{ + /* This assumes no layers underneath - which is what + happens, but is not how I remember it. NI-S 2001/10/16 + */ + if ((f = PerlIOBase_dup(aTHX_ f, o, param, flags))) { + FILE *stdio = PerlIOSelf(o, PerlIOStdio)->stdio; + if (flags & PERLIO_DUP_FD) { + int fd = PerlLIO_dup(fileno(stdio)); + if (fd >= 0) { + char mode[8]; + stdio = fdopen(fd, PerlIO_modestr(o,mode)); + } + else { + /* FIXME: To avoid messy error recovery if dup fails + re-use the existing stdio as though flag was not set + */ + } + } + PerlIOSelf(f, PerlIOStdio)->stdio = stdio; + PerlIOUnix_refcnt_inc(fileno(stdio)); + } + return f; } -SSize_t -PerlIOStdio_read(PerlIO *f, void *vbuf, Size_t count) -{ - FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; - SSize_t got = 0; - if (count == 1) - { - STDCHAR *buf = (STDCHAR *) vbuf; - /* Perl is expecting PerlIO_getc() to fill the buffer - * Linux's stdio does not do that for fread() - */ - int ch = fgetc(s); - if (ch != EOF) - { - *buf = ch; - got = 1; - } - } - else - got = fread(vbuf,1,count,s); - return got; +IV +PerlIOStdio_close(pTHX_ PerlIO *f) +{ +#ifdef SOCKS5_VERSION_NAME + int optval; + Sock_size_t optlen = sizeof(int); +#endif + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + if (PerlIOUnix_refcnt_dec(fileno(stdio)) > 0) { + /* Do not close it but do flush any buffers */ + return PerlIO_flush(f); + } + return ( +#ifdef SOCKS5_VERSION_NAME + (getsockopt + (PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (void *) &optval, + &optlen) < + 0) ? PerlSIO_fclose(stdio) : close(PerlIO_fileno(f)) +#else + PerlSIO_fclose(stdio) +#endif + ); + } + + SSize_t -PerlIOStdio_unread(PerlIO *f, const void *vbuf, Size_t count) -{ - FILE *s = PerlIOSelf(f,PerlIOStdio)->stdio; - STDCHAR *buf = ((STDCHAR *)vbuf)+count-1; - SSize_t unread = 0; - while (count > 0) - { - int ch = *buf-- & 0xff; - if (ungetc(ch,s) != ch) - break; - unread++; - count--; - } - return unread; +PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) +{ + FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio; + SSize_t got = 0; + if (count == 1) { + STDCHAR *buf = (STDCHAR *) vbuf; + /* + * Perl is expecting PerlIO_getc() to fill the buffer Linux's + * stdio does not do that for fread() + */ + int ch = PerlSIO_fgetc(s); + if (ch != EOF) { + *buf = ch; + got = 1; + } + } + else + got = PerlSIO_fread(vbuf, 1, count, s); + return got; } SSize_t -PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count) -{ - return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio); -} +PerlIOStdio_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + SSize_t unread = 0; + FILE *s = PerlIOSelf(f, PerlIOStdio)->stdio; + +#ifdef STDIO_BUFFER_WRITABLE + if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { + STDCHAR *buf = ((STDCHAR *) vbuf) + count; + STDCHAR *base = PerlIO_get_base(f); + SSize_t cnt = PerlIO_get_cnt(f); + STDCHAR *ptr = PerlIO_get_ptr(f); + SSize_t avail = ptr - base; + if (avail > 0) { + if (avail > count) { + avail = count; + } + ptr -= avail; + Move(buf-avail,ptr,avail,STDCHAR); + count -= avail; + unread += avail; + PerlIO_set_ptrcnt(f,ptr,cnt+avail); + if (PerlSIO_feof(s) && unread >= 0) + PerlSIO_clearerr(s); + } + } + else +#endif + if (PerlIO_has_cntptr(f)) { + /* We can get pointer to buffer but not its base + Do ungetc() but check chars are ending up in the + buffer + */ + STDCHAR *eptr = (STDCHAR*)PerlSIO_get_ptr(s); + STDCHAR *buf = ((STDCHAR *) vbuf) + count; + while (count > 0) { + int ch = *--buf & 0xFF; + if (ungetc(ch,s) != ch) { + /* ungetc did not work */ + break; + } + if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) { + /* Did not change pointer as expected */ + fgetc(s); /* get char back again */ + break; + } + /* It worked ! */ + count--; + unread++; + } + } -IV -PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence) -{ - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return fseek(stdio,offset,whence); + if (count > 0) { + unread += PerlIOBase_unread(aTHX_ f, vbuf, count); + } + return unread; } -Off_t -PerlIOStdio_tell(PerlIO *f) +SSize_t +PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return ftell(stdio); + return PerlSIO_fwrite(vbuf, 1, count, + PerlIOSelf(f, PerlIOStdio)->stdio); } IV -PerlIOStdio_close(PerlIO *f) +PerlIOStdio_seek(pTHX_ PerlIO *f, Off_t offset, int whence) { - return fclose(PerlIOSelf(f,PerlIOStdio)->stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return PerlSIO_fseek(stdio, offset, whence); } -IV -PerlIOStdio_flush(PerlIO *f) +Off_t +PerlIOStdio_tell(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return fflush(stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return PerlSIO_ftell(stdio); } IV -PerlIOStdio_fill(PerlIO *f) +PerlIOStdio_flush(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - int c; - if (fflush(stdio) != 0) - return EOF; - c = fgetc(stdio); - if (c == EOF || ungetc(c,stdio) != c) - return EOF; - return 0; + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + if (PerlIOBase(f)->flags & PERLIO_F_CANWRITE) { + return PerlSIO_fflush(stdio); + } + else { +#if 0 + /* + * FIXME: This discards ungetc() and pre-read stuff which is not + * right if this is just a "sync" from a layer above Suspect right + * design is to do _this_ but not have layer above flush this + * layer read-to-read + */ + /* + * Not writeable - sync by attempting a seek + */ + int err = errno; + if (PerlSIO_fseek(stdio, (Off_t) 0, SEEK_CUR) != 0) + errno = err; +#endif + } + return 0; } IV -PerlIOStdio_eof(PerlIO *f) +PerlIOStdio_eof(pTHX_ PerlIO *f) { - return feof(PerlIOSelf(f,PerlIOStdio)->stdio); + return PerlSIO_feof(PerlIOSelf(f, PerlIOStdio)->stdio); } IV -PerlIOStdio_error(PerlIO *f) +PerlIOStdio_error(pTHX_ PerlIO *f) { - return ferror(PerlIOSelf(f,PerlIOStdio)->stdio); + return PerlSIO_ferror(PerlIOSelf(f, PerlIOStdio)->stdio); } void -PerlIOStdio_clearerr(PerlIO *f) +PerlIOStdio_clearerr(pTHX_ PerlIO *f) { - clearerr(PerlIOSelf(f,PerlIOStdio)->stdio); + PerlSIO_clearerr(PerlIOSelf(f, PerlIOStdio)->stdio); } void -PerlIOStdio_setlinebuf(PerlIO *f) +PerlIOStdio_setlinebuf(pTHX_ PerlIO *f) { #ifdef HAS_SETLINEBUF - setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio); + PerlSIO_setlinebuf(PerlIOSelf(f, PerlIOStdio)->stdio); #else - setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0); + PerlSIO_setvbuf(PerlIOSelf(f, PerlIOStdio)->stdio, Nullch, _IOLBF, 0); #endif } #ifdef FILE_base STDCHAR * -PerlIOStdio_get_base(PerlIO *f) +PerlIOStdio_get_base(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return FILE_base(stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return (STDCHAR*)PerlSIO_get_base(stdio); } Size_t -PerlIOStdio_get_bufsiz(PerlIO *f) +PerlIOStdio_get_bufsiz(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return FILE_bufsiz(stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return PerlSIO_get_bufsiz(stdio); } #endif #ifdef USE_STDIO_PTR STDCHAR * -PerlIOStdio_get_ptr(PerlIO *f) +PerlIOStdio_get_ptr(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return FILE_ptr(stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return (STDCHAR*)PerlSIO_get_ptr(stdio); } SSize_t -PerlIOStdio_get_cnt(PerlIO *f) +PerlIOStdio_get_cnt(pTHX_ PerlIO *f) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - return FILE_cnt(stdio); + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + return PerlSIO_get_cnt(stdio); } void -PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt) +PerlIOStdio_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) { - FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio; - if (ptr != NULL) - { + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + if (ptr != NULL) { #ifdef STDIO_PTR_LVALUE - FILE_ptr(stdio) = ptr; + PerlSIO_set_ptr(stdio, (void*)ptr); /* LHS STDCHAR* cast non-portable */ #ifdef STDIO_PTR_LVAL_SETS_CNT - if (FILE_cnt(stdio) != (cnt)) - { - dTHX; - assert(FILE_cnt(stdio) == (cnt)); - } + if (PerlSIO_get_cnt(stdio) != (cnt)) { + assert(PerlSIO_get_cnt(stdio) == (cnt)); + } #endif #if (!defined(STDIO_PTR_LVAL_NOCHANGE_CNT)) - /* Setting ptr _does_ change cnt - we are done */ - return; -#endif -#else /* STDIO_PTR_LVALUE */ - abort(); -#endif /* STDIO_PTR_LVALUE */ - } -/* Now (or only) set cnt */ + /* + * Setting ptr _does_ change cnt - we are done + */ + return; +#endif +#else /* STDIO_PTR_LVALUE */ + PerlProc_abort(); +#endif /* STDIO_PTR_LVALUE */ + } + /* + * Now (or only) set cnt + */ #ifdef STDIO_CNT_LVALUE - FILE_cnt(stdio) = cnt; -#else /* STDIO_CNT_LVALUE */ + PerlSIO_set_cnt(stdio, cnt); +#else /* STDIO_CNT_LVALUE */ #if (defined(STDIO_PTR_LVALUE) && defined(STDIO_PTR_LVAL_SETS_CNT)) - FILE_ptr(stdio) = FILE_ptr(stdio)+(FILE_cnt(stdio)-cnt); -#else /* STDIO_PTR_LVAL_SETS_CNT */ - abort(); -#endif /* STDIO_PTR_LVAL_SETS_CNT */ -#endif /* STDIO_CNT_LVALUE */ + PerlSIO_set_ptr(stdio, + PerlSIO_get_ptr(stdio) + (PerlSIO_get_cnt(stdio) - + cnt)); +#else /* STDIO_PTR_LVAL_SETS_CNT */ + PerlProc_abort(); +#endif /* STDIO_PTR_LVAL_SETS_CNT */ +#endif /* STDIO_CNT_LVALUE */ } + +#endif + +IV +PerlIOStdio_fill(pTHX_ PerlIO *f) +{ + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + int c; + /* + * fflush()ing read-only streams can cause trouble on some stdio-s + */ + if ((PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) { + if (PerlSIO_fflush(stdio) != 0) + return EOF; + } + c = PerlSIO_fgetc(stdio); + if (c == EOF) + return EOF; + +#if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) + +#ifdef STDIO_BUFFER_WRITABLE + if (PerlIO_fast_gets(f) && PerlIO_has_base(f)) { + /* Fake ungetc() to the real buffer in case system's ungetc + goes elsewhere + */ + STDCHAR *base = (STDCHAR*)PerlSIO_get_base(stdio); + SSize_t cnt = PerlSIO_get_cnt(stdio); + STDCHAR *ptr = (STDCHAR*)PerlSIO_get_ptr(stdio); + if (ptr == base+1) { + *--ptr = (STDCHAR) c; + PerlIOStdio_set_ptrcnt(aTHX_ f,ptr,cnt+1); + if (PerlSIO_feof(stdio)) + PerlSIO_clearerr(stdio); + return 0; + } + } + else +#endif + if (PerlIO_has_cntptr(f)) { + STDCHAR ch = c; + if (PerlIOStdio_unread(aTHX_ f,&ch,1) == 1) { + return 0; + } + } +#endif + +#if defined(VMS) + /* An ungetc()d char is handled separately from the regular + * buffer, so we stuff it in the buffer ourselves. + * Should never get called as should hit code above + */ + *(--((*stdio)->_ptr)) = (unsigned char) c; + (*stdio)->_cnt++; +#else + /* If buffer snoop scheme above fails fall back to + using ungetc(). + */ + if (PerlSIO_ungetc(c, stdio) != c) + return EOF; #endif + return 0; +} + + PerlIO_funcs PerlIO_stdio = { - "stdio", - sizeof(PerlIOStdio), - 0, - PerlIOStdio_fileno, - PerlIOStdio_fdopen, - PerlIOStdio_open, - PerlIOStdio_reopen, - PerlIOBase_pushed, - PerlIOBase_noop_ok, - PerlIOStdio_read, - PerlIOStdio_unread, - PerlIOStdio_write, - PerlIOStdio_seek, - PerlIOStdio_tell, - PerlIOStdio_close, - PerlIOStdio_flush, - PerlIOStdio_fill, - PerlIOStdio_eof, - PerlIOStdio_error, - PerlIOStdio_clearerr, - PerlIOStdio_setlinebuf, + "stdio", + sizeof(PerlIOStdio), + PERLIO_K_BUFFERED, + PerlIOBase_pushed, + PerlIOBase_popped, + PerlIOStdio_open, + NULL, + PerlIOStdio_fileno, + PerlIOStdio_dup, + PerlIOStdio_read, + PerlIOStdio_unread, + PerlIOStdio_write, + PerlIOStdio_seek, + PerlIOStdio_tell, + PerlIOStdio_close, + PerlIOStdio_flush, + PerlIOStdio_fill, + PerlIOStdio_eof, + PerlIOStdio_error, + PerlIOStdio_clearerr, + PerlIOStdio_setlinebuf, #ifdef FILE_base - PerlIOStdio_get_base, - PerlIOStdio_get_bufsiz, + PerlIOStdio_get_base, + PerlIOStdio_get_bufsiz, #else - NULL, - NULL, + NULL, + NULL, #endif #ifdef USE_STDIO_PTR - PerlIOStdio_get_ptr, - PerlIOStdio_get_cnt, + PerlIOStdio_get_ptr, + PerlIOStdio_get_cnt, #if (defined(STDIO_PTR_LVALUE) && (defined(STDIO_CNT_LVALUE) || defined(STDIO_PTR_LVAL_SETS_CNT))) - PerlIOStdio_set_ptrcnt -#else /* STDIO_PTR_LVALUE */ - NULL -#endif /* STDIO_PTR_LVALUE */ -#else /* USE_STDIO_PTR */ - NULL, - NULL, - NULL -#endif /* USE_STDIO_PTR */ + PerlIOStdio_set_ptrcnt +#else /* STDIO_PTR_LVALUE */ + NULL +#endif /* STDIO_PTR_LVALUE */ +#else /* USE_STDIO_PTR */ + NULL, + NULL, + NULL +#endif /* USE_STDIO_PTR */ }; -#undef PerlIO_exportFILE FILE * PerlIO_exportFILE(PerlIO *f, int fl) { - PerlIO_flush(f); - /* Should really push stdio discipline when we have them */ - return fdopen(PerlIO_fileno(f),"r+"); + dTHX; + FILE *stdio; + char buf[8]; + PerlIO_flush(f); + stdio = fdopen(PerlIO_fileno(f), PerlIO_modestr(f,buf)); + if (stdio) { + PerlIOStdio *s = + PerlIOSelf(PerlIO_push(aTHX_ f, &PerlIO_stdio, buf, Nullsv), + PerlIOStdio); + s->stdio = stdio; + } + return stdio; } -#undef PerlIO_findFILE FILE * PerlIO_findFILE(PerlIO *f) { - return PerlIO_exportFILE(f,0); + PerlIOl *l = *f; + while (l) { + if (l->tab == &PerlIO_stdio) { + PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); + return s->stdio; + } + l = *PerlIONext(&l); + } + return PerlIO_exportFILE(f, 0); } -#undef PerlIO_releaseFILE void PerlIO_releaseFILE(PerlIO *p, FILE *f) { + PerlIOl *l; + while ((l = *p)) { + if (l->tab == &PerlIO_stdio) { + PerlIOStdio *s = PerlIOSelf(&l, PerlIOStdio); + if (s->stdio == f) { + dTHX; + PerlIO_pop(aTHX_ p); + return; + } + } + p = PerlIONext(p); + } + return; } /*--------------------------------------------------------------------------------------*/ -/* perlio buffer layer */ +/* + * perlio buffer layer + */ -PerlIO * -PerlIOBuf_fdopen(PerlIO_funcs *self, int fd, const char *mode) -{ - PerlIO_funcs *tab = PerlIO_default_btm(); - int init = 0; - PerlIO *f; - if (*mode == 'I') - { - init = 1; - mode++; - } - f = (*tab->Fdopen)(tab,fd,mode); - if (f) - { - /* Initial stderr is unbuffered */ - if (!init || fd != 2) - { - PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); - b->posn = PerlIO_tell(PerlIONext(f)); - } - } - return f; +IV +PerlIOBuf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + int fd = PerlIO_fileno(f); + Off_t posn; + if (fd >= 0 && PerlLIO_isatty(fd)) { + PerlIOBase(f)->flags |= PERLIO_F_LINEBUF | PERLIO_F_TTY; + } + posn = PerlIO_tell(PerlIONext(f)); + if (posn != (Off_t) - 1) { + b->posn = posn; + } + return PerlIOBase_pushed(aTHX_ f, mode, arg); } PerlIO * -PerlIOBuf_open(PerlIO_funcs *self, const char *path, const char *mode) -{ - PerlIO_funcs *tab = PerlIO_default_btm(); - PerlIO *f = (*tab->Open)(tab,path,mode); - if (f) - { - PerlIOBuf *b = PerlIOSelf(PerlIO_push(f,self,NULL),PerlIOBuf); - b->posn = PerlIO_tell(PerlIONext(f)); - } - return f; +PerlIOBuf_open(pTHX_ PerlIO_funcs *self, PerlIO_list_t *layers, + IV n, const char *mode, int fd, int imode, int perm, + PerlIO *f, int narg, SV **args) +{ + if (PerlIOValid(f)) { + PerlIO *next = PerlIONext(f); + PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIOBase(next)->tab); + next = (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, + next, narg, args); + if (!next || (*PerlIOBase(f)->tab->Pushed) (aTHX_ f, mode, PerlIOArg) != 0) { + return NULL; + } + } + else { + PerlIO_funcs *tab = PerlIO_layer_fetch(aTHX_ layers, n - 1, PerlIO_default_btm()); + int init = 0; + if (*mode == 'I') { + init = 1; + /* + * mode++; + */ + } + f = (*tab->Open) (aTHX_ tab, layers, n - 1, mode, fd, imode, perm, + f, narg, args); + if (f) { + if (PerlIO_push(aTHX_ f, self, mode, PerlIOArg) == 0) { + /* + * if push fails during open, open fails. close will pop us. + */ + PerlIO_close (f); + return NULL; + } else { + fd = PerlIO_fileno(f); + if (init && fd == 2) { + /* + * Initial stderr is unbuffered + */ + PerlIOBase(f)->flags |= PERLIO_F_UNBUF; + } +#ifdef PERLIO_USING_CRLF +# ifdef PERLIO_IS_BINMODE_FD + if (PERLIO_IS_BINMODE_FD(fd)) + PerlIO_binmode(f, '<'/*not used*/, O_BINARY, Nullch); + else +# endif + /* + * do something about failing setmode()? --jhi + */ + PerlLIO_setmode(fd, O_BINARY); +#endif + } + } + } + return f; } -int -PerlIOBuf_reopen(const char *path, const char *mode, PerlIO *f) -{ - PerlIO *next = PerlIONext(f); - int code = (*PerlIOBase(next)->tab->Reopen)(path,mode,next); - if (code = 0) - code = (*PerlIOBase(f)->tab->Pushed)(f,mode); - if (code == 0) - { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - b->posn = PerlIO_tell(PerlIONext(f)); - } - return code; -} - -/* This "flush" is akin to sfio's sync in that it handles files in either - read or write state -*/ +/* + * This "flush" is akin to sfio's sync in that it handles files in either + * read or write state + */ IV -PerlIOBuf_flush(PerlIO *f) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - int code = 0; - if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) - { - /* write() the buffer */ - STDCHAR *p = b->buf; - int count; - while (p < b->ptr) - { - count = PerlIO_write(PerlIONext(f),p,b->ptr - p); - if (count > 0) - { - p += count; - } - else if (count < 0) - { - PerlIOBase(f)->flags |= PERLIO_F_ERROR; - code = -1; - break; - } - } - b->posn += (p - b->buf); - } - else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) - { - /* Note position change */ - b->posn += (b->ptr - b->buf); - if (b->ptr < b->end) - { - /* We did not consume all of it */ - if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) == 0) - { - b->posn = PerlIO_tell(PerlIONext(f)); - } - } - } - b->ptr = b->end = b->buf; - PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); - if (PerlIO_flush(PerlIONext(f)) != 0) - code = -1; - return code; +PerlIOBuf_flush(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + int code = 0; + PerlIO *n = PerlIONext(f); + if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) { + /* + * write() the buffer + */ + STDCHAR *buf = b->buf; + STDCHAR *p = buf; + while (p < b->ptr) { + SSize_t count = PerlIO_write(n, p, b->ptr - p); + if (count > 0) { + p += count; + } + else if (count < 0 || PerlIO_error(n)) { + PerlIOBase(f)->flags |= PERLIO_F_ERROR; + code = -1; + break; + } + } + b->posn += (p - buf); + } + else if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { + STDCHAR *buf = PerlIO_get_base(f); + /* + * Note position change + */ + b->posn += (b->ptr - buf); + if (b->ptr < b->end) { + /* + * We did not consume all of it + */ + if (PerlIO_seek(n, b->posn, SEEK_SET) == 0) { + /* Reload n as some layers may pop themselves on seek */ + b->posn = PerlIO_tell(n = PerlIONext(f)); + } + else { + return code; + } + } + } + b->ptr = b->end = b->buf; + PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); + /* We check for Valid because of dubious decision to make PerlIO_flush(NULL) flush all */ + /* FIXME: Doing downstream flush may be sub-optimal see PerlIOBuf_fill() below */ + if (PerlIOValid(n) && PerlIO_flush(n) != 0) + code = -1; + return code; } IV -PerlIOBuf_fill(PerlIO *f) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - SSize_t avail; - if (PerlIO_flush(f) != 0) - return -1; - b->ptr = b->end = b->buf; - avail = PerlIO_read(PerlIONext(f),b->ptr,b->bufsiz); - if (avail <= 0) - { - if (avail == 0) - PerlIOBase(f)->flags |= PERLIO_F_EOF; - else - PerlIOBase(f)->flags |= PERLIO_F_ERROR; - return -1; - } - b->end = b->buf+avail; - PerlIOBase(f)->flags |= PERLIO_F_RDBUF; - return 0; +PerlIOBuf_fill(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + PerlIO *n = PerlIONext(f); + SSize_t avail; + /* + * FIXME: doing the down-stream flush maybe sub-optimal if it causes + * pre-read data in stdio buffer to be discarded. + * However, skipping the flush also skips _our_ hosekeeping + * and breaks tell tests. So we do the flush. + */ + if (PerlIO_flush(f) != 0) + return -1; + if (PerlIOBase(f)->flags & PERLIO_F_TTY) + PerlIOBase_flush_linebuf(aTHX); + + if (!b->buf) + PerlIO_get_base(f); /* allocate via vtable */ + + b->ptr = b->end = b->buf; + if (PerlIO_fast_gets(n)) { + /* + * Layer below is also buffered. We do _NOT_ want to call its + * ->Read() because that will loop till it gets what we asked for + * which may hang on a pipe etc. Instead take anything it has to + * hand, or ask it to fill _once_. + */ + avail = PerlIO_get_cnt(n); + if (avail <= 0) { + avail = PerlIO_fill(n); + if (avail == 0) + avail = PerlIO_get_cnt(n); + else { + if (!PerlIO_error(n) && PerlIO_eof(n)) + avail = 0; + } + } + if (avail > 0) { + STDCHAR *ptr = PerlIO_get_ptr(n); + SSize_t cnt = avail; + if (avail > (SSize_t)b->bufsiz) + avail = b->bufsiz; + Copy(ptr, b->buf, avail, STDCHAR); + PerlIO_set_ptrcnt(n, ptr + avail, cnt - avail); + } + } + else { + avail = PerlIO_read(n, b->ptr, b->bufsiz); + } + if (avail <= 0) { + if (avail == 0) + PerlIOBase(f)->flags |= PERLIO_F_EOF; + else + PerlIOBase(f)->flags |= PERLIO_F_ERROR; + return -1; + } + b->end = b->buf + avail; + PerlIOBase(f)->flags |= PERLIO_F_RDBUF; + return 0; } SSize_t -PerlIOBuf_read(PerlIO *f, void *vbuf, Size_t count) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - STDCHAR *buf = (STDCHAR *) vbuf; - if (f) - { - Size_t got = 0; - if (!b->ptr) - PerlIO_get_base(f); - if (!(PerlIOBase(f)->flags & PERLIO_F_CANREAD)) +PerlIOBuf_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (PerlIOValid(f)) { + if (!b->ptr) + PerlIO_get_base(f); + return PerlIOBase_read(aTHX_ f, vbuf, count); + } return 0; - while (count > 0) - { - SSize_t avail = (b->end - b->ptr); - if ((SSize_t) count < avail) - avail = count; - if (avail > 0) - { - Copy(b->ptr,buf,avail,char); - got += avail; - b->ptr += avail; - count -= avail; - buf += avail; - } - if (count && (b->ptr >= b->end)) - { - if (PerlIO_fill(f) != 0) - break; - } - } - return got; - } - return 0; } SSize_t -PerlIOBuf_unread(PerlIO *f, const void *vbuf, Size_t count) -{ - const STDCHAR *buf = (const STDCHAR *) vbuf+count; - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - SSize_t unread = 0; - SSize_t avail; - if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) - PerlIO_flush(f); - if (!b->buf) - PerlIO_get_base(f); - if (b->buf) - { - if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) - { - avail = (b->ptr - b->buf); - if (avail > (SSize_t) count) - avail = count; - b->ptr -= avail; - } - else - { - avail = b->bufsiz; - if (avail > (SSize_t) count) - avail = count; - b->end = b->ptr + avail; - } - if (avail > 0) - { - buf -= avail; - if (buf != b->ptr) - { - Copy(buf,b->ptr,avail,char); - } - count -= avail; - unread += avail; - PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; - } - } - return unread; +PerlIOBuf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + const STDCHAR *buf = (const STDCHAR *) vbuf + count; + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + SSize_t unread = 0; + SSize_t avail; + if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) + PerlIO_flush(f); + if (!b->buf) + PerlIO_get_base(f); + if (b->buf) { + if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { + /* + * Buffer is already a read buffer, we can overwrite any chars + * which have been read back to buffer start + */ + avail = (b->ptr - b->buf); + } + else { + /* + * Buffer is idle, set it up so whole buffer is available for + * unread + */ + avail = b->bufsiz; + b->end = b->buf + avail; + b->ptr = b->end; + PerlIOBase(f)->flags |= PERLIO_F_RDBUF; + /* + * Buffer extends _back_ from where we are now + */ + b->posn -= b->bufsiz; + } + if (avail > (SSize_t) count) { + /* + * If we have space for more than count, just move count + */ + avail = count; + } + if (avail > 0) { + b->ptr -= avail; + buf -= avail; + /* + * In simple stdio-like ungetc() case chars will be already + * there + */ + if (buf != b->ptr) { + Copy(buf, b->ptr, avail, STDCHAR); + } + count -= avail; + unread += avail; + PerlIOBase(f)->flags &= ~PERLIO_F_EOF; + } + } + if (count > 0) { + unread += PerlIOBase_unread(aTHX_ f, vbuf, count); + } + return unread; } SSize_t -PerlIOBuf_write(PerlIO *f, const void *vbuf, Size_t count) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - const STDCHAR *buf = (const STDCHAR *) vbuf; - Size_t written = 0; - if (!b->buf) - PerlIO_get_base(f); - if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) - return 0; - while (count > 0) - { - SSize_t avail = b->bufsiz - (b->ptr - b->buf); - if ((SSize_t) count < avail) - avail = count; - PerlIOBase(f)->flags |= PERLIO_F_WRBUF; - if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) - { - while (avail > 0) - { - int ch = *buf++; - *(b->ptr)++ = ch; - count--; - avail--; - written++; - if (ch == '\n') - { - PerlIO_flush(f); - break; - } - } - } - else - { - if (avail) - { - Copy(buf,b->ptr,avail,char); - count -= avail; - buf += avail; - written += avail; - b->ptr += avail; - } - } - if (b->ptr >= (b->buf + b->bufsiz)) - PerlIO_flush(f); - } - return written; +PerlIOBuf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + const STDCHAR *buf = (const STDCHAR *) vbuf; + Size_t written = 0; + if (!b->buf) + PerlIO_get_base(f); + if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) + return 0; + while (count > 0) { + SSize_t avail = b->bufsiz - (b->ptr - b->buf); + if ((SSize_t) count < avail) + avail = count; + PerlIOBase(f)->flags |= PERLIO_F_WRBUF; + if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { + while (avail > 0) { + int ch = *buf++; + *(b->ptr)++ = ch; + count--; + avail--; + written++; + if (ch == '\n') { + PerlIO_flush(f); + break; + } + } + } + else { + if (avail) { + Copy(buf, b->ptr, avail, STDCHAR); + count -= avail; + buf += avail; + written += avail; + b->ptr += avail; + } + } + if (b->ptr >= (b->buf + b->bufsiz)) + PerlIO_flush(f); + } + if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) + PerlIO_flush(f); + return written; } IV -PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - int code = PerlIO_flush(f); - if (code == 0) - { - PerlIOBase(f)->flags &= ~PERLIO_F_EOF; - code = PerlIO_seek(PerlIONext(f),offset,whence); - if (code == 0) - { - b->posn = PerlIO_tell(PerlIONext(f)); +PerlIOBuf_seek(pTHX_ PerlIO *f, Off_t offset, int whence) +{ + IV code; + if ((code = PerlIO_flush(f)) == 0) { + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + PerlIOBase(f)->flags &= ~PERLIO_F_EOF; + code = PerlIO_seek(PerlIONext(f), offset, whence); + if (code == 0) { + b->posn = PerlIO_tell(PerlIONext(f)); + } } - } - return code; + return code; } Off_t -PerlIOBuf_tell(PerlIO *f) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - Off_t posn = b->posn; - if (b->buf) - posn += (b->ptr - b->buf); - return posn; +PerlIOBuf_tell(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + /* + * b->posn is file position where b->buf was read, or will be written + */ + Off_t posn = b->posn; + if (b->buf) { + /* + * If buffer is valid adjust position by amount in buffer + */ + posn += (b->ptr - b->buf); + } + return posn; } IV -PerlIOBuf_close(PerlIO *f) +PerlIOBuf_popped(pTHX_ PerlIO *f) { - IV code = PerlIOBase_close(f); - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (b->buf && b->buf != (STDCHAR *) &b->oneword) - { - Safefree(b->buf); - } - b->buf = NULL; - b->ptr = b->end = b->buf; - PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); - return code; + IV code = PerlIOBase_popped(aTHX_ f); + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (b->buf && b->buf != (STDCHAR *) & b->oneword) { + Safefree(b->buf); + } + b->buf = NULL; + b->ptr = b->end = b->buf; + PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); + return code; } -void -PerlIOBuf_setlinebuf(PerlIO *f) +IV +PerlIOBuf_close(pTHX_ PerlIO *f) { - if (f) - { - PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF; - } + IV code = PerlIOBase_close(aTHX_ f); + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (b->buf && b->buf != (STDCHAR *) & b->oneword) { + Safefree(b->buf); + } + b->buf = NULL; + b->ptr = b->end = b->buf; + PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); + return code; } STDCHAR * -PerlIOBuf_get_ptr(PerlIO *f) +PerlIOBuf_get_ptr(pTHX_ PerlIO *f) { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (!b->buf) - PerlIO_get_base(f); - return b->ptr; + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) + PerlIO_get_base(f); + return b->ptr; } SSize_t -PerlIOBuf_get_cnt(PerlIO *f) +PerlIOBuf_get_cnt(pTHX_ PerlIO *f) { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (!b->buf) - PerlIO_get_base(f); - if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) - return (b->end - b->ptr); - return 0; + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) + PerlIO_get_base(f); + if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) + return (b->end - b->ptr); + return 0; } STDCHAR * -PerlIOBuf_get_base(PerlIO *f) -{ - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (!b->buf) - { - if (!b->bufsiz) - b->bufsiz = 4096; - New('B',b->buf,b->bufsiz,STDCHAR); - if (!b->buf) - { - b->buf = (STDCHAR *)&b->oneword; - b->bufsiz = sizeof(b->oneword); +PerlIOBuf_get_base(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) { + if (!b->bufsiz) + b->bufsiz = 4096; + b->buf = + Newz('B',b->buf,b->bufsiz, STDCHAR); + if (!b->buf) { + b->buf = (STDCHAR *) & b->oneword; + b->bufsiz = sizeof(b->oneword); + } + b->ptr = b->buf; + b->end = b->ptr; } - b->ptr = b->buf; - b->end = b->ptr; - } - return b->buf; + return b->buf; } Size_t -PerlIOBuf_bufsiz(PerlIO *f) +PerlIOBuf_bufsiz(pTHX_ PerlIO *f) { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (!b->buf) - PerlIO_get_base(f); - return (b->end - b->buf); + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) + PerlIO_get_base(f); + return (b->end - b->buf); } void -PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt) +PerlIOBuf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) + PerlIO_get_base(f); + b->ptr = ptr; + if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) { + assert(PerlIO_get_cnt(f) == cnt); + assert(b->ptr >= b->buf); + } + PerlIOBase(f)->flags |= PERLIO_F_RDBUF; +} + +PerlIO * +PerlIOBuf_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - if (!b->buf) - PerlIO_get_base(f); - b->ptr = ptr; - if (PerlIO_get_cnt(f) != cnt || b->ptr < b->buf) - { - dTHX; - assert(PerlIO_get_cnt(f) == cnt); - assert(b->ptr >= b->buf); - } - PerlIOBase(f)->flags |= PERLIO_F_RDBUF; + return PerlIOBase_dup(aTHX_ f, o, param, flags); } + + PerlIO_funcs PerlIO_perlio = { - "perlio", - sizeof(PerlIOBuf), - 0, - PerlIOBase_fileno, - PerlIOBuf_fdopen, - PerlIOBuf_open, - PerlIOBuf_reopen, - PerlIOBase_pushed, - PerlIOBase_noop_ok, - PerlIOBuf_read, - PerlIOBuf_unread, - PerlIOBuf_write, - PerlIOBuf_seek, - PerlIOBuf_tell, - PerlIOBuf_close, - PerlIOBuf_flush, - PerlIOBuf_fill, - PerlIOBase_eof, - PerlIOBase_error, - PerlIOBase_clearerr, - PerlIOBuf_setlinebuf, - PerlIOBuf_get_base, - PerlIOBuf_bufsiz, - PerlIOBuf_get_ptr, - PerlIOBuf_get_cnt, - PerlIOBuf_set_ptrcnt, + "perlio", + sizeof(PerlIOBuf), + PERLIO_K_BUFFERED, + PerlIOBuf_pushed, + PerlIOBuf_popped, + PerlIOBuf_open, + NULL, + PerlIOBase_fileno, + PerlIOBuf_dup, + PerlIOBuf_read, + PerlIOBuf_unread, + PerlIOBuf_write, + PerlIOBuf_seek, + PerlIOBuf_tell, + PerlIOBuf_close, + PerlIOBuf_flush, + PerlIOBuf_fill, + PerlIOBase_eof, + PerlIOBase_error, + PerlIOBase_clearerr, + PerlIOBase_setlinebuf, + PerlIOBuf_get_base, + PerlIOBuf_bufsiz, + PerlIOBuf_get_ptr, + PerlIOBuf_get_cnt, + PerlIOBuf_set_ptrcnt, }; -#ifdef HAS_MMAP /*--------------------------------------------------------------------------------------*/ -/* mmap as "buffer" layer */ +/* + * Temp layer to hold unread chars when cannot do it any other way + */ + +IV +PerlIOPending_fill(pTHX_ PerlIO *f) +{ + /* + * Should never happen + */ + PerlIO_flush(f); + return 0; +} + +IV +PerlIOPending_close(pTHX_ PerlIO *f) +{ + /* + * A tad tricky - flush pops us, then we close new top + */ + PerlIO_flush(f); + return PerlIO_close(f); +} + +IV +PerlIOPending_seek(pTHX_ PerlIO *f, Off_t offset, int whence) +{ + /* + * A tad tricky - flush pops us, then we seek new top + */ + PerlIO_flush(f); + return PerlIO_seek(f, offset, whence); +} + + +IV +PerlIOPending_flush(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (b->buf && b->buf != (STDCHAR *) & b->oneword) { + Safefree(b->buf); + b->buf = NULL; + } + PerlIO_pop(aTHX_ f); + return 0; +} + +void +PerlIOPending_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) +{ + if (cnt <= 0) { + PerlIO_flush(f); + } + else { + PerlIOBuf_set_ptrcnt(aTHX_ f, ptr, cnt); + } +} + +IV +PerlIOPending_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + IV code = PerlIOBase_pushed(aTHX_ f, mode, arg); + PerlIOl *l = PerlIOBase(f); + /* + * Our PerlIO_fast_gets must match what we are pushed on, or sv_gets() + * etc. get muddled when it changes mid-string when we auto-pop. + */ + l->flags = (l->flags & ~(PERLIO_F_FASTGETS | PERLIO_F_UTF8)) | + (PerlIOBase(PerlIONext(f))-> + flags & (PERLIO_F_FASTGETS | PERLIO_F_UTF8)); + return code; +} + +SSize_t +PerlIOPending_read(pTHX_ PerlIO *f, void *vbuf, Size_t count) +{ + SSize_t avail = PerlIO_get_cnt(f); + SSize_t got = 0; + if ((SSize_t)count < avail) + avail = count; + if (avail > 0) + got = PerlIOBuf_read(aTHX_ f, vbuf, avail); + if (got >= 0 && got < (SSize_t)count) { + SSize_t more = + PerlIO_read(f, ((STDCHAR *) vbuf) + got, count - got); + if (more >= 0 || got == 0) + got += more; + } + return got; +} + +PerlIO_funcs PerlIO_pending = { + "pending", + sizeof(PerlIOBuf), + PERLIO_K_BUFFERED, + PerlIOPending_pushed, + PerlIOBuf_popped, + NULL, + NULL, + PerlIOBase_fileno, + PerlIOBuf_dup, + PerlIOPending_read, + PerlIOBuf_unread, + PerlIOBuf_write, + PerlIOPending_seek, + PerlIOBuf_tell, + PerlIOPending_close, + PerlIOPending_flush, + PerlIOPending_fill, + PerlIOBase_eof, + PerlIOBase_error, + PerlIOBase_clearerr, + PerlIOBase_setlinebuf, + PerlIOBuf_get_base, + PerlIOBuf_bufsiz, + PerlIOBuf_get_ptr, + PerlIOBuf_get_cnt, + PerlIOPending_set_ptrcnt, +}; + + + +/*--------------------------------------------------------------------------------------*/ +/* + * crlf - translation On read translate CR,LF to "\n" we do this by + * overriding ptr/cnt entries to hand back a line at a time and keeping a + * record of which nl we "lied" about. On write translate "\n" to CR,LF + */ + +typedef struct { + PerlIOBuf base; /* PerlIOBuf stuff */ + STDCHAR *nl; /* Position of crlf we "lied" about in the + * buffer */ +} PerlIOCrlf; -typedef struct +IV +PerlIOCrlf_pushed(pTHX_ PerlIO *f, const char *mode, SV *arg) +{ + IV code; + PerlIOBase(f)->flags |= PERLIO_F_CRLF; + code = PerlIOBuf_pushed(aTHX_ f, mode, arg); +#if 0 + PerlIO_debug("PerlIOCrlf_pushed f=%p %s %s fl=%08" UVxf "\n", + f, PerlIOBase(f)->tab->name, (mode) ? mode : "(Null)", + PerlIOBase(f)->flags); +#endif + return code; +} + + +SSize_t +PerlIOCrlf_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf); + if (c->nl) { + *(c->nl) = 0xd; + c->nl = NULL; + } + if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) + return PerlIOBuf_unread(aTHX_ f, vbuf, count); + else { + const STDCHAR *buf = (const STDCHAR *) vbuf + count; + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + SSize_t unread = 0; + if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) + PerlIO_flush(f); + if (!b->buf) + PerlIO_get_base(f); + if (b->buf) { + if (!(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { + b->end = b->ptr = b->buf + b->bufsiz; + PerlIOBase(f)->flags |= PERLIO_F_RDBUF; + b->posn -= b->bufsiz; + } + while (count > 0 && b->ptr > b->buf) { + int ch = *--buf; + if (ch == '\n') { + if (b->ptr - 2 >= b->buf) { + *--(b->ptr) = 0xa; + *--(b->ptr) = 0xd; + unread++; + count--; + } + else { + buf++; + break; + } + } + else { + *--(b->ptr) = ch; + unread++; + count--; + } + } + } + return unread; + } +} + +SSize_t +PerlIOCrlf_get_cnt(pTHX_ PerlIO *f) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + if (!b->buf) + PerlIO_get_base(f); + if (PerlIOBase(f)->flags & PERLIO_F_RDBUF) { + PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf); + if ((PerlIOBase(f)->flags & PERLIO_F_CRLF) && (!c->nl || *c->nl == 0xd)) { + STDCHAR *nl = (c->nl) ? c->nl : b->ptr; + scan: + while (nl < b->end && *nl != 0xd) + nl++; + if (nl < b->end && *nl == 0xd) { + test: + if (nl + 1 < b->end) { + if (nl[1] == 0xa) { + *nl = '\n'; + c->nl = nl; + } + else { + /* + * Not CR,LF but just CR + */ + nl++; + goto scan; + } + } + else { + /* + * Blast - found CR as last char in buffer + */ + + if (b->ptr < nl) { + /* + * They may not care, defer work as long as + * possible + */ + c->nl = nl; + return (nl - b->ptr); + } + else { + int code; + b->ptr++; /* say we have read it as far as + * flush() is concerned */ + b->buf++; /* Leave space in front of buffer */ + b->bufsiz--; /* Buffer is thus smaller */ + code = PerlIO_fill(f); /* Fetch some more */ + b->bufsiz++; /* Restore size for next time */ + b->buf--; /* Point at space */ + b->ptr = nl = b->buf; /* Which is what we hand + * off */ + b->posn--; /* Buffer starts here */ + *nl = 0xd; /* Fill in the CR */ + if (code == 0) + goto test; /* fill() call worked */ + /* + * CR at EOF - just fall through + */ + /* Should we clear EOF though ??? */ + } + } + } + } + return (((c->nl) ? (c->nl + 1) : b->end) - b->ptr); + } + return 0; +} + +void +PerlIOCrlf_set_ptrcnt(pTHX_ PerlIO *f, STDCHAR * ptr, SSize_t cnt) +{ + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf); + if (!b->buf) + PerlIO_get_base(f); + if (!ptr) { + if (c->nl) { + ptr = c->nl + 1; + if (ptr == b->end && *c->nl == 0xd) { + /* Defered CR at end of buffer case - we lied about count */ + ptr--; + } + } + else { + ptr = b->end; + } + ptr -= cnt; + } + else { +#if 0 + /* + * Test code - delete when it works ... + */ + IV flags = PerlIOBase(f)->flags; + STDCHAR *chk = (c->nl) ? (c->nl+1) : b->end; + if (ptr+cnt == c->nl && c->nl+1 == b->end && *c->nl == 0xd) { + /* Defered CR at end of buffer case - we lied about count */ + chk--; + } + chk -= cnt; + + if (ptr != chk ) { + Perl_croak(aTHX_ "ptr wrong %p != %p fl=%08" UVxf + " nl=%p e=%p for %d", ptr, chk, flags, c->nl, + b->end, cnt); + } +#endif + } + if (c->nl) { + if (ptr > c->nl) { + /* + * They have taken what we lied about + */ + *(c->nl) = 0xd; + c->nl = NULL; + ptr++; + } + } + b->ptr = ptr; + PerlIOBase(f)->flags |= PERLIO_F_RDBUF; +} + +SSize_t +PerlIOCrlf_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + if (!(PerlIOBase(f)->flags & PERLIO_F_CRLF)) + return PerlIOBuf_write(aTHX_ f, vbuf, count); + else { + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + const STDCHAR *buf = (const STDCHAR *) vbuf; + const STDCHAR *ebuf = buf + count; + if (!b->buf) + PerlIO_get_base(f); + if (!(PerlIOBase(f)->flags & PERLIO_F_CANWRITE)) + return 0; + while (buf < ebuf) { + STDCHAR *eptr = b->buf + b->bufsiz; + PerlIOBase(f)->flags |= PERLIO_F_WRBUF; + while (buf < ebuf && b->ptr < eptr) { + if (*buf == '\n') { + if ((b->ptr + 2) > eptr) { + /* + * Not room for both + */ + PerlIO_flush(f); + break; + } + else { + *(b->ptr)++ = 0xd; /* CR */ + *(b->ptr)++ = 0xa; /* LF */ + buf++; + if (PerlIOBase(f)->flags & PERLIO_F_LINEBUF) { + PerlIO_flush(f); + break; + } + } + } + else { + int ch = *buf++; + *(b->ptr)++ = ch; + } + if (b->ptr >= eptr) { + PerlIO_flush(f); + break; + } + } + } + if (PerlIOBase(f)->flags & PERLIO_F_UNBUF) + PerlIO_flush(f); + return (buf - (STDCHAR *) vbuf); + } +} + +IV +PerlIOCrlf_flush(pTHX_ PerlIO *f) { - PerlIOBuf base; /* PerlIOBuf stuff */ - Mmap_t mptr; /* Mapped address */ - Size_t len; /* mapped length */ - STDCHAR *bbuf; /* malloced buffer if map fails */ + PerlIOCrlf *c = PerlIOSelf(f, PerlIOCrlf); + if (c->nl) { + *(c->nl) = 0xd; + c->nl = NULL; + } + return PerlIOBuf_flush(aTHX_ f); +} + +PerlIO_funcs PerlIO_crlf = { + "crlf", + sizeof(PerlIOCrlf), + PERLIO_K_BUFFERED | PERLIO_K_CANCRLF, + PerlIOCrlf_pushed, + PerlIOBuf_popped, /* popped */ + PerlIOBuf_open, + NULL, + PerlIOBase_fileno, + PerlIOBuf_dup, + PerlIOBuf_read, /* generic read works with ptr/cnt lies + * ... */ + PerlIOCrlf_unread, /* Put CR,LF in buffer for each '\n' */ + PerlIOCrlf_write, /* Put CR,LF in buffer for each '\n' */ + PerlIOBuf_seek, + PerlIOBuf_tell, + PerlIOBuf_close, + PerlIOCrlf_flush, + PerlIOBuf_fill, + PerlIOBase_eof, + PerlIOBase_error, + PerlIOBase_clearerr, + PerlIOBase_setlinebuf, + PerlIOBuf_get_base, + PerlIOBuf_bufsiz, + PerlIOBuf_get_ptr, + PerlIOCrlf_get_cnt, + PerlIOCrlf_set_ptrcnt, +}; + +#ifdef HAS_MMAP +/*--------------------------------------------------------------------------------------*/ +/* + * mmap as "buffer" layer + */ +typedef struct { + PerlIOBuf base; /* PerlIOBuf stuff */ + Mmap_t mptr; /* Mapped address */ + Size_t len; /* mapped length */ + STDCHAR *bbuf; /* malloced buffer if map fails */ } PerlIOMmap; static size_t page_size = 0; IV -PerlIOMmap_map(PerlIO *f) -{ - dTHX; - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - IV flags = PerlIOBase(f)->flags; - IV code = 0; - if (m->len) - abort(); - if (flags & PERLIO_F_CANREAD) - { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - int fd = PerlIO_fileno(f); - struct stat st; - code = fstat(fd,&st); - if (code == 0 && S_ISREG(st.st_mode)) - { - SSize_t len = st.st_size - b->posn; - if (len > 0) - { - Off_t posn; - if (!page_size) { +PerlIOMmap_map(pTHX_ PerlIO *f) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + IV flags = PerlIOBase(f)->flags; + IV code = 0; + if (m->len) + abort(); + if (flags & PERLIO_F_CANREAD) { + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + int fd = PerlIO_fileno(f); + Stat_t st; + code = Fstat(fd, &st); + if (code == 0 && S_ISREG(st.st_mode)) { + SSize_t len = st.st_size - b->posn; + if (len > 0) { + Off_t posn; + if (!page_size) { #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE)) - { - SETERRNO(0,SS$_NORMAL); + { + SETERRNO(0, SS$_NORMAL); # ifdef _SC_PAGESIZE - page_size = sysconf(_SC_PAGESIZE); + page_size = sysconf(_SC_PAGESIZE); # else - page_size = sysconf(_SC_PAGE_SIZE); + page_size = sysconf(_SC_PAGE_SIZE); # endif - if ((long)page_size < 0) { - if (errno) { - SV *error = ERRSV; - char *msg; - STRLEN n_a; - (void)SvUPGRADE(error, SVt_PV); - msg = SvPVx(error, n_a); - Perl_croak(aTHX_ "panic: sysconf: %s", msg); - } - else - Perl_croak(aTHX_ "panic: sysconf: pagesize unknown"); - } - } + if ((long) page_size < 0) { + if (errno) { + SV *error = ERRSV; + char *msg; + STRLEN n_a; + (void) SvUPGRADE(error, SVt_PV); + msg = SvPVx(error, n_a); + Perl_croak(aTHX_ "panic: sysconf: %s", + msg); + } + else + Perl_croak(aTHX_ + "panic: sysconf: pagesize unknown"); + } + } #else # ifdef HAS_GETPAGESIZE - page_size = getpagesize(); + page_size = getpagesize(); # else # if defined(I_SYS_PARAM) && defined(PAGESIZE) - page_size = PAGESIZE; /* compiletime, bad */ + page_size = PAGESIZE; /* compiletime, bad */ # endif # endif #endif - if ((IV)page_size <= 0) - Perl_croak(aTHX_ "panic: bad pagesize %"IVdf, (IV)page_size); - } - if (b->posn < 0) - { - /* This is a hack - should never happen - open should have set it ! */ - b->posn = PerlIO_tell(PerlIONext(f)); - } - posn = (b->posn / page_size) * page_size; - len = st.st_size - posn; - m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn); - if (m->mptr && m->mptr != (Mmap_t) -1) - { -#if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) - madvise(m->mptr, len, MADV_SEQUENTIAL); -#endif - PerlIOBase(f)->flags = (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; - b->end = ((STDCHAR *)m->mptr) + len; - b->buf = ((STDCHAR *)m->mptr) + (b->posn - posn); - b->ptr = b->buf; - m->len = len; - } - else - { - b->buf = NULL; - } - } - else - { - PerlIOBase(f)->flags = flags | PERLIO_F_EOF | PERLIO_F_RDBUF; - b->buf = NULL; - b->ptr = b->end = b->ptr; - code = -1; - } - } - } - return code; + if ((IV) page_size <= 0) + Perl_croak(aTHX_ "panic: bad pagesize %" IVdf, + (IV) page_size); + } + if (b->posn < 0) { + /* + * This is a hack - should never happen - open should + * have set it ! + */ + b->posn = PerlIO_tell(PerlIONext(f)); + } + posn = (b->posn / page_size) * page_size; + len = st.st_size - posn; + m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn); + if (m->mptr && m->mptr != (Mmap_t) - 1) { +#if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL) + madvise(m->mptr, len, MADV_SEQUENTIAL); +#endif +#if 0 && defined(HAS_MADVISE) && defined(MADV_WILLNEED) + madvise(m->mptr, len, MADV_WILLNEED); +#endif + PerlIOBase(f)->flags = + (flags & ~PERLIO_F_EOF) | PERLIO_F_RDBUF; + b->end = ((STDCHAR *) m->mptr) + len; + b->buf = ((STDCHAR *) m->mptr) + (b->posn - posn); + b->ptr = b->buf; + m->len = len; + } + else { + b->buf = NULL; + } + } + else { + PerlIOBase(f)->flags = + flags | PERLIO_F_EOF | PERLIO_F_RDBUF; + b->buf = NULL; + b->ptr = b->end = b->ptr; + code = -1; + } + } + } + return code; } IV -PerlIOMmap_unmap(PerlIO *f) -{ - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - IV code = 0; - if (m->len) - { - if (b->buf) - { - code = munmap(m->mptr, m->len); - b->buf = NULL; - m->len = 0; - m->mptr = NULL; - if (PerlIO_seek(PerlIONext(f),b->posn,SEEK_SET) != 0) - code = -1; - } - b->ptr = b->end = b->buf; - PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF|PERLIO_F_WRBUF); - } - return code; +PerlIOMmap_unmap(pTHX_ PerlIO *f) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + IV code = 0; + if (m->len) { + if (b->buf) { + code = munmap(m->mptr, m->len); + b->buf = NULL; + m->len = 0; + m->mptr = NULL; + if (PerlIO_seek(PerlIONext(f), b->posn, SEEK_SET) != 0) + code = -1; + } + b->ptr = b->end = b->buf; + PerlIOBase(f)->flags &= ~(PERLIO_F_RDBUF | PERLIO_F_WRBUF); + } + return code; } STDCHAR * -PerlIOMmap_get_base(PerlIO *f) -{ - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) - { - /* Already have a readbuffer in progress */ - return b->buf; - } - if (b->buf) - { - /* We have a write buffer or flushed PerlIOBuf read buffer */ - m->bbuf = b->buf; /* save it in case we need it again */ - b->buf = NULL; /* Clear to trigger below */ - } - if (!b->buf) - { - PerlIOMmap_map(f); /* Try and map it */ - if (!b->buf) - { - /* Map did not work - recover PerlIOBuf buffer if we have one */ - b->buf = m->bbuf; - } - } - b->ptr = b->end = b->buf; - if (b->buf) - return b->buf; - return PerlIOBuf_get_base(f); +PerlIOMmap_get_base(pTHX_ PerlIO *f) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + if (b->buf && (PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { + /* + * Already have a readbuffer in progress + */ + return b->buf; + } + if (b->buf) { + /* + * We have a write buffer or flushed PerlIOBuf read buffer + */ + m->bbuf = b->buf; /* save it in case we need it again */ + b->buf = NULL; /* Clear to trigger below */ + } + if (!b->buf) { + PerlIOMmap_map(aTHX_ f); /* Try and map it */ + if (!b->buf) { + /* + * Map did not work - recover PerlIOBuf buffer if we have one + */ + b->buf = m->bbuf; + } + } + b->ptr = b->end = b->buf; + if (b->buf) + return b->buf; + return PerlIOBuf_get_base(aTHX_ f); } SSize_t -PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count) -{ - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) - PerlIO_flush(f); - if (b->ptr && (b->ptr - count) >= b->buf && memEQ(b->ptr - count,vbuf,count)) - { - b->ptr -= count; - PerlIOBase(f)->flags &= ~ PERLIO_F_EOF; - return count; - } - if (m->len) - { - /* Loose the unwritable mapped buffer */ - PerlIO_flush(f); - /* If flush took the "buffer" see if we have one from before */ - if (!b->buf && m->bbuf) - b->buf = m->bbuf; - if (!b->buf) - { - PerlIOBuf_get_base(f); - m->bbuf = b->buf; - } - } - return PerlIOBuf_unread(f,vbuf,count); +PerlIOMmap_unread(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + if (PerlIOBase(f)->flags & PERLIO_F_WRBUF) + PerlIO_flush(f); + if (b->ptr && (b->ptr - count) >= b->buf + && memEQ(b->ptr - count, vbuf, count)) { + b->ptr -= count; + PerlIOBase(f)->flags &= ~PERLIO_F_EOF; + return count; + } + if (m->len) { + /* + * Loose the unwritable mapped buffer + */ + PerlIO_flush(f); + /* + * If flush took the "buffer" see if we have one from before + */ + if (!b->buf && m->bbuf) + b->buf = m->bbuf; + if (!b->buf) { + PerlIOBuf_get_base(aTHX_ f); + m->bbuf = b->buf; + } + } + return PerlIOBuf_unread(aTHX_ f, vbuf, count); } SSize_t -PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count) -{ - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) - { - /* No, or wrong sort of, buffer */ - if (m->len) - { - if (PerlIOMmap_unmap(f) != 0) - return 0; - } - /* If unmap took the "buffer" see if we have one from before */ - if (!b->buf && m->bbuf) - b->buf = m->bbuf; - if (!b->buf) - { - PerlIOBuf_get_base(f); - m->bbuf = b->buf; - } - } - return PerlIOBuf_write(f,vbuf,count); +PerlIOMmap_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + if (!b->buf || !(PerlIOBase(f)->flags & PERLIO_F_WRBUF)) { + /* + * No, or wrong sort of, buffer + */ + if (m->len) { + if (PerlIOMmap_unmap(aTHX_ f) != 0) + return 0; + } + /* + * If unmap took the "buffer" see if we have one from before + */ + if (!b->buf && m->bbuf) + b->buf = m->bbuf; + if (!b->buf) { + PerlIOBuf_get_base(aTHX_ f); + m->bbuf = b->buf; + } + } + return PerlIOBuf_write(aTHX_ f, vbuf, count); } IV -PerlIOMmap_flush(PerlIO *f) -{ - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - IV code = PerlIOBuf_flush(f); - /* Now we are "synced" at PerlIOBuf level */ - if (b->buf) - { - if (m->len) - { - /* Unmap the buffer */ - if (PerlIOMmap_unmap(f) != 0) - code = -1; - } - else - { - /* We seem to have a PerlIOBuf buffer which was not mapped - * remember it in case we need one later - */ - m->bbuf = b->buf; - } - } - return code; +PerlIOMmap_flush(pTHX_ PerlIO *f) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + IV code = PerlIOBuf_flush(aTHX_ f); + /* + * Now we are "synced" at PerlIOBuf level + */ + if (b->buf) { + if (m->len) { + /* + * Unmap the buffer + */ + if (PerlIOMmap_unmap(aTHX_ f) != 0) + code = -1; + } + else { + /* + * We seem to have a PerlIOBuf buffer which was not mapped + * remember it in case we need one later + */ + m->bbuf = b->buf; + } + } + return code; } IV -PerlIOMmap_fill(PerlIO *f) +PerlIOMmap_fill(pTHX_ PerlIO *f) { - PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf); - IV code = PerlIO_flush(f); - if (code == 0 && !b->buf) - { - code = PerlIOMmap_map(f); - } - if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) - { - code = PerlIOBuf_fill(f); - } - return code; + PerlIOBuf *b = PerlIOSelf(f, PerlIOBuf); + IV code = PerlIO_flush(f); + if (code == 0 && !b->buf) { + code = PerlIOMmap_map(aTHX_ f); + } + if (code == 0 && !(PerlIOBase(f)->flags & PERLIO_F_RDBUF)) { + code = PerlIOBuf_fill(aTHX_ f); + } + return code; } IV -PerlIOMmap_close(PerlIO *f) +PerlIOMmap_close(pTHX_ PerlIO *f) +{ + PerlIOMmap *m = PerlIOSelf(f, PerlIOMmap); + PerlIOBuf *b = &m->base; + IV code = PerlIO_flush(f); + if (m->bbuf) { + b->buf = m->bbuf; + m->bbuf = NULL; + b->ptr = b->end = b->buf; + } + if (PerlIOBuf_close(aTHX_ f) != 0) + code = -1; + return code; +} + +PerlIO * +PerlIOMmap_dup(pTHX_ PerlIO *f, PerlIO *o, CLONE_PARAMS *param, int flags) { - PerlIOMmap *m = PerlIOSelf(f,PerlIOMmap); - PerlIOBuf *b = &m->base; - IV code = PerlIO_flush(f); - if (m->bbuf) - { - b->buf = m->bbuf; - m->bbuf = NULL; - b->ptr = b->end = b->buf; - } - if (PerlIOBuf_close(f) != 0) - code = -1; - return code; + return PerlIOBase_dup(aTHX_ f, o, param, flags); } PerlIO_funcs PerlIO_mmap = { - "mmap", - sizeof(PerlIOMmap), - 0, - PerlIOBase_fileno, - PerlIOBuf_fdopen, - PerlIOBuf_open, - PerlIOBuf_reopen, - PerlIOBase_pushed, - PerlIOBase_noop_ok, - PerlIOBuf_read, - PerlIOMmap_unread, - PerlIOMmap_write, - PerlIOBuf_seek, - PerlIOBuf_tell, - PerlIOBuf_close, - PerlIOMmap_flush, - PerlIOMmap_fill, - PerlIOBase_eof, - PerlIOBase_error, - PerlIOBase_clearerr, - PerlIOBuf_setlinebuf, - PerlIOMmap_get_base, - PerlIOBuf_bufsiz, - PerlIOBuf_get_ptr, - PerlIOBuf_get_cnt, - PerlIOBuf_set_ptrcnt, + "mmap", + sizeof(PerlIOMmap), + PERLIO_K_BUFFERED, + PerlIOBuf_pushed, + PerlIOBuf_popped, + PerlIOBuf_open, + NULL, + PerlIOBase_fileno, + PerlIOMmap_dup, + PerlIOBuf_read, + PerlIOMmap_unread, + PerlIOMmap_write, + PerlIOBuf_seek, + PerlIOBuf_tell, + PerlIOBuf_close, + PerlIOMmap_flush, + PerlIOMmap_fill, + PerlIOBase_eof, + PerlIOBase_error, + PerlIOBase_clearerr, + PerlIOBase_setlinebuf, + PerlIOMmap_get_base, + PerlIOBuf_bufsiz, + PerlIOBuf_get_ptr, + PerlIOBuf_get_cnt, + PerlIOBuf_set_ptrcnt, }; -#endif /* HAS_MMAP */ - -void -PerlIO_init(void) -{ - if (!_perlio) - { - atexit(&PerlIO_cleanup); - } -} +#endif /* HAS_MMAP */ -#undef PerlIO_stdin PerlIO * -PerlIO_stdin(void) +Perl_PerlIO_stdin(pTHX) { - if (!_perlio) - PerlIO_stdstreams(); - return &_perlio[1]; + if (!PL_perlio) { + PerlIO_stdstreams(aTHX); + } + return &PL_perlio[1]; } -#undef PerlIO_stdout PerlIO * -PerlIO_stdout(void) +Perl_PerlIO_stdout(pTHX) { - if (!_perlio) - PerlIO_stdstreams(); - return &_perlio[2]; + if (!PL_perlio) { + PerlIO_stdstreams(aTHX); + } + return &PL_perlio[2]; } -#undef PerlIO_stderr PerlIO * -PerlIO_stderr(void) +Perl_PerlIO_stderr(pTHX) { - if (!_perlio) - PerlIO_stdstreams(); - return &_perlio[3]; + if (!PL_perlio) { + PerlIO_stdstreams(aTHX); + } + return &PL_perlio[3]; } /*--------------------------------------------------------------------------------------*/ -#undef PerlIO_getname char * PerlIO_getname(PerlIO *f, char *buf) { - dTHX; - Perl_croak(aTHX_ "Don't know how to get file name"); - return NULL; + dTHX; + char *name = NULL; +#ifdef VMS + FILE *stdio = PerlIOSelf(f, PerlIOStdio)->stdio; + if (stdio) + name = fgetname(stdio, buf); +#else + Perl_croak(aTHX_ "Don't know how to get file name"); +#endif + return name; } /*--------------------------------------------------------------------------------------*/ -/* Functions which can be called on any kind of PerlIO implemented - in terms of above -*/ +/* + * Functions which can be called on any kind of PerlIO implemented in + * terms of above + */ + +#undef PerlIO_fdopen +PerlIO * +PerlIO_fdopen(int fd, const char *mode) +{ + dTHX; + return PerlIO_openn(aTHX_ Nullch, mode, fd, 0, 0, NULL, 0, NULL); +} + +#undef PerlIO_open +PerlIO * +PerlIO_open(const char *path, const char *mode) +{ + dTHX; + SV *name = sv_2mortal(newSVpvn(path, strlen(path))); + return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, NULL, 1, &name); +} + +#undef Perlio_reopen +PerlIO * +PerlIO_reopen(const char *path, const char *mode, PerlIO *f) +{ + dTHX; + SV *name = sv_2mortal(newSVpvn(path, strlen(path))); + return PerlIO_openn(aTHX_ Nullch, mode, -1, 0, 0, f, 1, &name); +} #undef PerlIO_getc int PerlIO_getc(PerlIO *f) { - STDCHAR buf[1]; - SSize_t count = PerlIO_read(f,buf,1); - if (count == 1) - { - return (unsigned char) buf[0]; - } - return EOF; + dTHX; + STDCHAR buf[1]; + SSize_t count = PerlIO_read(f, buf, 1); + if (count == 1) { + return (unsigned char) buf[0]; + } + return EOF; } #undef PerlIO_ungetc int PerlIO_ungetc(PerlIO *f, int ch) { - if (ch != EOF) - { - STDCHAR buf = ch; - if (PerlIO_unread(f,&buf,1) == 1) - return ch; - } - return EOF; + dTHX; + if (ch != EOF) { + STDCHAR buf = ch; + if (PerlIO_unread(f, &buf, 1) == 1) + return ch; + } + return EOF; } #undef PerlIO_putc int PerlIO_putc(PerlIO *f, int ch) { - STDCHAR buf = ch; - return PerlIO_write(f,&buf,1); + dTHX; + STDCHAR buf = ch; + return PerlIO_write(f, &buf, 1); } #undef PerlIO_puts int PerlIO_puts(PerlIO *f, const char *s) { - STRLEN len = strlen(s); - return PerlIO_write(f,s,len); + dTHX; + STRLEN len = strlen(s); + return PerlIO_write(f, s, len); } #undef PerlIO_rewind void PerlIO_rewind(PerlIO *f) { - PerlIO_seek(f,(Off_t)0,SEEK_SET); - PerlIO_clearerr(f); + dTHX; + PerlIO_seek(f, (Off_t) 0, SEEK_SET); + PerlIO_clearerr(f); } #undef PerlIO_vprintf int PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap) { - dTHX; - SV *sv = newSVpvn("",0); - char *s; - STRLEN len; - sv_vcatpvf(sv, fmt, &ap); - s = SvPV(sv,len); - return PerlIO_write(f,s,len); + dTHX; + SV *sv = newSVpvn("", 0); + char *s; + STRLEN len; + SSize_t wrote; +#ifdef NEED_VA_COPY + va_list apc; + Perl_va_copy(ap, apc); + sv_vcatpvf(sv, fmt, &apc); +#else + sv_vcatpvf(sv, fmt, &ap); +#endif + s = SvPV(sv, len); + wrote = PerlIO_write(f, s, len); + SvREFCNT_dec(sv); + return wrote; } #undef PerlIO_printf int -PerlIO_printf(PerlIO *f,const char *fmt,...) +PerlIO_printf(PerlIO *f, const char *fmt, ...) { - va_list ap; - int result; - va_start(ap,fmt); - result = PerlIO_vprintf(f,fmt,ap); - va_end(ap); - return result; + va_list ap; + int result; + va_start(ap, fmt); + result = PerlIO_vprintf(f, fmt, ap); + va_end(ap); + return result; } #undef PerlIO_stdoutf int -PerlIO_stdoutf(const char *fmt,...) +PerlIO_stdoutf(const char *fmt, ...) { - va_list ap; - int result; - va_start(ap,fmt); - result = PerlIO_vprintf(PerlIO_stdout(),fmt,ap); - va_end(ap); - return result; + dTHX; + va_list ap; + int result; + va_start(ap, fmt); + result = PerlIO_vprintf(PerlIO_stdout(), fmt, ap); + va_end(ap); + return result; } #undef PerlIO_tmpfile PerlIO * PerlIO_tmpfile(void) { - dTHX; - /* I have no idea how portable mkstemp() is ... */ - SV *sv = newSVpv("/tmp/PerlIO_XXXXXX",0); - int fd = mkstemp(SvPVX(sv)); - PerlIO *f = NULL; - if (fd >= 0) - { - f = PerlIO_fdopen(fd,"w+"); - if (f) - { - PerlIOBase(f)->flags |= PERLIO_F_TEMP; + /* + * I have no idea how portable mkstemp() is ... + */ +#if defined(WIN32) || !defined(HAVE_MKSTEMP) + dTHX; + PerlIO *f = NULL; + FILE *stdio = PerlSIO_tmpfile(); + if (stdio) { + PerlIOStdio *s = + PerlIOSelf(PerlIO_push + (aTHX_(f = PerlIO_allocate(aTHX)), &PerlIO_stdio, + "w+", Nullsv), PerlIOStdio); + s->stdio = stdio; } - unlink(SvPVX(sv)); - SvREFCNT_dec(sv); - } - return f; + return f; +#else + dTHX; + SV *sv = newSVpv("/tmp/PerlIO_XXXXXX", 0); + int fd = mkstemp(SvPVX(sv)); + PerlIO *f = NULL; + if (fd >= 0) { + f = PerlIO_fdopen(fd, "w+"); + if (f) { + PerlIOBase(f)->flags |= PERLIO_F_TEMP; + } + PerlLIO_unlink(SvPVX(sv)); + SvREFCNT_dec(sv); + } + return f; +#endif } #undef HAS_FSETPOS #undef HAS_FGETPOS -#endif /* USE_SFIO */ -#endif /* PERLIO_IS_STDIO */ +#endif /* USE_SFIO */ +#endif /* PERLIO_IS_STDIO */ /*======================================================================================*/ -/* Now some functions in terms of above which may be needed even if - we are not in true PerlIO mode +/* + * Now some functions in terms of above which may be needed even if we are + * not in true PerlIO mode */ #ifndef HAS_FSETPOS #undef PerlIO_setpos int -PerlIO_setpos(PerlIO *f, const Fpos_t *pos) -{ - return PerlIO_seek(f,*pos,0); +PerlIO_setpos(PerlIO *f, SV *pos) +{ + dTHX; + if (SvOK(pos)) { + STRLEN len; + Off_t *posn = (Off_t *) SvPV(pos, len); + if (f && len == sizeof(Off_t)) + return PerlIO_seek(f, *posn, SEEK_SET); + } + SETERRNO(EINVAL, SS$_IVCHAN); + return -1; } #else -#ifndef PERLIO_IS_STDIO #undef PerlIO_setpos int -PerlIO_setpos(PerlIO *f, const Fpos_t *pos) +PerlIO_setpos(PerlIO *f, SV *pos) { + dTHX; + if (SvOK(pos)) { + STRLEN len; + Fpos_t *fpos = (Fpos_t *) SvPV(pos, len); + if (f && len == sizeof(Fpos_t)) { #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) - return fsetpos64(f, pos); + return fsetpos64(f, fpos); #else - return fsetpos(f, pos); + return fsetpos(f, fpos); #endif + } + } + SETERRNO(EINVAL, SS$_IVCHAN); + return -1; } #endif -#endif #ifndef HAS_FGETPOS #undef PerlIO_getpos int -PerlIO_getpos(PerlIO *f, Fpos_t *pos) +PerlIO_getpos(PerlIO *f, SV *pos) { - *pos = PerlIO_tell(f); - return *pos == -1 ? -1 : 0; + dTHX; + Off_t posn = PerlIO_tell(f); + sv_setpvn(pos, (char *) &posn, sizeof(posn)); + return (posn == (Off_t) - 1) ? -1 : 0; } #else -#ifndef PERLIO_IS_STDIO #undef PerlIO_getpos int -PerlIO_getpos(PerlIO *f, Fpos_t *pos) +PerlIO_getpos(PerlIO *f, SV *pos) { + dTHX; + Fpos_t fpos; + int code; #if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64) - return fgetpos64(f, pos); + code = fgetpos64(f, &fpos); #else - return fgetpos(f, pos); + code = fgetpos(f, &fpos); #endif + sv_setpvn(pos, (char *) &fpos, sizeof(fpos)); + return code; } #endif -#endif #if (defined(PERLIO_IS_STDIO) || !defined(USE_SFIO)) && !defined(HAS_VPRINTF) @@ -2236,14 +4512,16 @@ int vprintf(char *pat, char *args) { _doprnt(pat, args, stdout); - return 0; /* wrong, but perl doesn't use the return value */ + return 0; /* wrong, but perl doesn't use the return + * value */ } int vfprintf(FILE *fd, char *pat, char *args) { _doprnt(pat, args, fd); - return 0; /* wrong, but perl doesn't use the return value */ + return 0; /* wrong, but perl doesn't use the return + * value */ } #endif @@ -2252,33 +4530,33 @@ vfprintf(FILE *fd, char *pat, char *args) int PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap) { - int val = vsprintf(s, fmt, ap); - if (n >= 0) - { - if (strlen(s) >= (STRLEN)n) - { - dTHX; - (void)PerlIO_puts(Perl_error_log, - "panic: sprintf overflow - memory corrupted!\n"); - my_exit(1); + int val = vsprintf(s, fmt, ap); + if (n >= 0) { + if (strlen(s) >= (STRLEN) n) { + dTHX; + (void) PerlIO_puts(Perl_error_log, + "panic: sprintf overflow - memory corrupted!\n"); + my_exit(1); + } } - } - return val; + return val; } #endif #ifndef PerlIO_sprintf int -PerlIO_sprintf(char *s, int n, const char *fmt,...) +PerlIO_sprintf(char *s, int n, const char *fmt, ...) { - va_list ap; - int result; - va_start(ap,fmt); - result = PerlIO_vsprintf(s, n, fmt, ap); - va_end(ap); - return result; + va_list ap; + int result; + va_start(ap, fmt); + result = PerlIO_vsprintf(s, n, fmt, ap); + va_end(ap); + return result; } #endif -#endif /* !PERL_IMPLICIT_SYS */ + + +