/* perlio.c
*
- * Copyright (c) 1996-1999, Nick Ing-Simmons
+ * 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.
*
*/
-#if !defined(PERL_IMPLICIT_SYS)
-
#define VOIDUSED 1
-#include "config.h"
+#ifdef PERL_MICRO
+# include "uconfig.h"
+#else
+# include "config.h"
+#endif
-#define PERLIO_NOT_STDIO 0
+#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
+ * This file provides those parts of PerlIO abstraction
* which are not #defined in iperlsys.h.
- * Which these are depends on various Configure #ifdef's
+ * Which these are depends on various Configure #ifdef's
*/
#include "EXTERN.h"
#define PERL_IN_PERLIO_C
#include "perl.h"
-#ifdef PERLIO_IS_STDIO
+#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"))
+ {
+ return 0;
+ }
+ Perl_croak(aTHX_ "Cannot apply \"%s\" in non-PerlIO perl",names);
+ /* NOTREACHED */
+ return -1;
+}
+#endif
+
+#if !defined(PERL_IMPLICIT_SYS)
+
+#ifdef PERLIO_IS_STDIO
void
PerlIO_init(void)
{
- /* Does nothing (yet) except force this file to be included
+ /* 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
+ of other functions that may be required by loadable
+ extensions e.g. for FileHandle::tmpfile
*/
}
#undef HAS_FSETPOS
#undef HAS_FGETPOS
-/* This section is just to make sure these functions
+/* This section is just to make sure these functions
get pulled in from libsfio.a
*/
void
PerlIO_init(void)
{
- /* 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
+ * 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 */
+/*======================================================================================*/
+/* Implement all the PerlIO interface ourselves.
+ */
-/* Implement all the PerlIO interface using stdio.
- - this should be only file to include <stdio.h>
-*/
+#include "perliol.h"
-#undef PerlIO_stderr
-PerlIO *
-PerlIO_stderr(void)
+/* We _MUST_ have <unistd.h> if we are using lseek() and may have large files */
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+#ifdef HAS_MMAP
+#include <sys/mman.h>
+#endif
+
+#include "XSUB.h"
+
+void PerlIO_debug(char *fmt,...) __attribute__((format(__printf__,1,2)));
+
+void
+PerlIO_debug(char *fmt,...)
{
- return (PerlIO *) stderr;
+ static int dbg = 0;
+ 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;
+ 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);
+ PerlLIO_write(dbg,s,len);
+ va_end(ap);
+ SvREFCNT_dec(sv);
+ }
}
-#undef PerlIO_stdin
+/*--------------------------------------------------------------------------------------*/
+
+/* Inner level routines */
+
+/* Table of pointers to the PerlIO structs (malloc'ed) */
+PerlIO *_perlio = NULL;
+#define PERLIO_TABLE_SIZE 64
+
PerlIO *
-PerlIO_stdin(void)
+PerlIO_allocate(void)
{
- return (PerlIO *) stdin;
+ /* 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;
}
-#undef PerlIO_stdout
-PerlIO *
-PerlIO_stdout(void)
+void
+PerlIO_cleantable(PerlIO **tablep)
{
- return (PerlIO *) stdout;
+ 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);
+ }
+ Safefree(table);
+ *tablep = NULL;
+ }
}
-#undef PerlIO_fast_gets
-int
-PerlIO_fast_gets(PerlIO *f)
+HV *PerlIO_layer_hv;
+AV *PerlIO_layer_av;
+
+void
+PerlIO_cleanup(void)
{
-#if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE) && defined(STDIO_CNT_LVALUE)
- return 1;
-#else
+ PerlIO_cleantable(&_perlio);
+}
+
+void
+PerlIO_pop(PerlIO *f)
+{
+ PerlIOl *l = *f;
+ if (l)
+ {
+ (*l->tab->Popped)(f);
+ *f = l->next;
+ Safefree(l);
+ }
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* XS Interface for perl code */
+
+XS(XS_perlio_import)
+{
+ dXSARGS;
+ GV *gv = CvGV(cv);
+ char *s = GvNAME(gv);
+ STRLEN l = GvNAMELEN(gv);
+ PerlIO_debug("%.*s\n",(int) l,s);
+ XSRETURN_EMPTY;
+}
+
+XS(XS_perlio_unimport)
+{
+ dXSARGS;
+ GV *gv = CvGV(cv);
+ char *s = GvNAME(gv);
+ STRLEN l = GvNAMELEN(gv);
+ PerlIO_debug("%.*s\n",(int) l,s);
+ XSRETURN_EMPTY;
+}
+
+SV *
+PerlIO_find_layer(const char *name, STRLEN len)
+{
+ 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;
+}
+
+
+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);
+ AV *av = (AV *) mg->mg_obj;
+ Perl_warn(aTHX_ "set %_ %p %p %p",sv,io,ifp,ofp);
+ }
return 0;
-#endif
}
-#undef PerlIO_has_cntptr
-int
-PerlIO_has_cntptr(PerlIO *f)
+static int
+perlio_mg_get(pTHX_ SV *sv, MAGIC *mg)
{
-#if defined(USE_STDIO_PTR)
- return 1;
-#else
+ if (SvROK(sv))
+ {
+ IO *io = GvIOn((GV *)SvRV(sv));
+ PerlIO *ifp = IoIFP(io);
+ PerlIO *ofp = IoOFP(io);
+ AV *av = (AV *) mg->mg_obj;
+ Perl_warn(aTHX_ "get %_ %p %p %p",sv,io,ifp,ofp);
+ }
return 0;
-#endif
}
-#undef PerlIO_canset_cnt
-int
-PerlIO_canset_cnt(PerlIO *f)
+static int
+perlio_mg_clear(pTHX_ SV *sv, MAGIC *mg)
{
-#if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE)
- return 1;
-#else
+ Perl_warn(aTHX_ "clear %_",sv);
return 0;
-#endif
}
-#undef PerlIO_set_cnt
+static int
+perlio_mg_free(pTHX_ SV *sv, MAGIC *mg)
+{
+ Perl_warn(aTHX_ "free %_",sv);
+ return 0;
+}
+
+MGVTBL perlio_vtab = {
+ perlio_mg_get,
+ perlio_mg_set,
+ NULL, /* len */
+ NULL,
+ 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, '~', NULL, 0);
+ SvRMAGICAL_off(sv);
+ mg = mg_find(sv,'~');
+ mg->mg_virtual = &perlio_vtab;
+ mg_magical(sv);
+ Perl_warn(aTHX_ "attrib %_",sv);
+ for (i=2; i < items; i++)
+ {
+ STRLEN len;
+ const char *name = SvPV(ST(i),len);
+ SV *layer = PerlIO_find_layer(name,len);
+ if (layer)
+ {
+ av_push(av,SvREFCNT_inc(layer));
+ }
+ else
+ {
+ ST(count) = ST(i);
+ count++;
+ }
+ }
+ SvREFCNT_dec(av);
+ XSRETURN(count);
+}
+
void
-PerlIO_set_cnt(PerlIO *f, int cnt)
+PerlIO_define_layer(PerlIO_funcs *tab)
{
- if (cnt < -1 && ckWARN_s(WARN_INTERNAL))
- Perl_warner(aTHX_ WARN_INTERNAL, "Setting cnt to %d\n",cnt);
-#if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE)
- FILE_cnt(f) = cnt;
-#else
- Perl_croak(aTHX_ "Cannot set 'cnt' of FILE * on this system");
+ 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 *
+PerlIO_default_layer(I32 n)
+{
+ dTHX;
+ SV **svp;
+ SV *layer;
+ PerlIO_funcs *tab = &PerlIO_stdio;
+ int len;
+ if (!PerlIO_layer_hv)
+ {
+ const char *s = PerlEnv_getenv("PERLIO");
+ newXS("perlio::import",XS_perlio_import,__FILE__);
+ newXS("perlio::unimport",XS_perlio_unimport,__FILE__);
+#if 0
+ newXS("io::MODIFY_SCALAR_ATTRIBUTES",XS_io_MODIFY_SCALAR_ATTRIBUTES,__FILE__);
#endif
+ PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI);
+ PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI);
+ PerlIO_define_layer(&PerlIO_unix);
+ PerlIO_define_layer(&PerlIO_perlio);
+ PerlIO_define_layer(&PerlIO_stdio);
+ PerlIO_define_layer(&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)
+ {
+ const char *e = s;
+ SV *layer;
+ while (*e && !isSPACE((unsigned char)*e))
+ e++;
+ if (*s == ':')
+ s++;
+ 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;
+}
+
+int
+PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
+{
+ if (names)
+ {
+ const char *s = names;
+ while (*s)
+ {
+ while (isSPACE(*s))
+ s++;
+ if (*s == ':')
+ s++;
+ if (*s)
+ {
+ const char *e = s;
+ while (*e && *e != ':' && !isSPACE(*e))
+ e++;
+ if (e > s)
+ {
+ SV *layer = PerlIO_find_layer(s,e-s);
+ if (layer)
+ {
+ PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer)));
+ if (tab)
+ {
+ PerlIO *new = PerlIO_push(f,tab,mode);
+ if (!new)
+ return -1;
+ }
+ }
+ else
+ Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s);
+ }
+ s = e;
+ }
+ }
+ }
+ return 0;
+}
+
+#define PerlIO_default_top() PerlIO_default_layer(-1)
+#define PerlIO_default_btm() PerlIO_default_layer(0)
+
+void
+PerlIO_stdstreams()
+{
+ if (!_perlio)
+ {
+ PerlIO_allocate();
+ PerlIO_fdopen(0,"Ir");
+ PerlIO_fdopen(1,"Iw");
+ PerlIO_fdopen(2,"Iw");
+ }
+}
+
+PerlIO *
+PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode)
+{
+ 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;
+ }
+ }
+ return f;
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* Given the abstraction above the public API functions */
+
+#undef PerlIO_close
+int
+PerlIO_close(PerlIO *f)
+{
+ int code = (*PerlIOBase(f)->tab->Close)(f);
+ while (*f)
+ {
+ PerlIO_pop(f);
+ }
+ return code;
+}
+
+#undef PerlIO_fileno
+int
+PerlIO_fileno(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Fileno)(f);
+}
+
+
+
+#undef PerlIO_fdopen
+PerlIO *
+PerlIO_fdopen(int fd, const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_top();
+ if (!_perlio)
+ PerlIO_stdstreams();
+ return (*tab->Fdopen)(tab,fd,mode);
+}
+
+#undef PerlIO_open
+PerlIO *
+PerlIO_open(const char *path, const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_top();
+ if (!_perlio)
+ PerlIO_stdstreams();
+ return (*tab->Open)(tab,path,mode);
+}
+
+#undef PerlIO_reopen
+PerlIO *
+PerlIO_reopen(const char *path, const char *mode, 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;
+ }
+ return NULL;
+ }
+ else
+ return PerlIO_open(path,mode);
+}
+
+#undef PerlIO_read
+SSize_t
+PerlIO_read(PerlIO *f, void *vbuf, Size_t count)
+{
+ return (*PerlIOBase(f)->tab->Read)(f,vbuf,count);
+}
+
+#undef PerlIO_unread
+SSize_t
+PerlIO_unread(PerlIO *f, const void *vbuf, Size_t count)
+{
+ return (*PerlIOBase(f)->tab->Unread)(f,vbuf,count);
+}
+
+#undef PerlIO_write
+SSize_t
+PerlIO_write(PerlIO *f, const void *vbuf, Size_t count)
+{
+ return (*PerlIOBase(f)->tab->Write)(f,vbuf,count);
+}
+
+#undef PerlIO_seek
+int
+PerlIO_seek(PerlIO *f, Off_t offset, int whence)
+{
+ return (*PerlIOBase(f)->tab->Seek)(f,offset,whence);
+}
+
+#undef PerlIO_tell
+Off_t
+PerlIO_tell(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Tell)(f);
+}
+
+#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
+int
+PerlIO_fill(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Fill)(f);
+}
+
+#undef PerlIO_isutf8
+int
+PerlIO_isutf8(PerlIO *f)
+{
+ return (PerlIOBase(f)->flags & PERLIO_F_UTF8) != 0;
+}
+
+#undef PerlIO_eof
+int
+PerlIO_eof(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Eof)(f);
+}
+
+#undef PerlIO_error
+int
+PerlIO_error(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Error)(f);
+}
+
+#undef PerlIO_clearerr
+void
+PerlIO_clearerr(PerlIO *f)
+{
+ (*PerlIOBase(f)->tab->Clearerr)(f);
+}
+
+#undef PerlIO_setlinebuf
+void
+PerlIO_setlinebuf(PerlIO *f)
+{
+ (*PerlIOBase(f)->tab->Setlinebuf)(f);
+}
+
+#undef PerlIO_has_base
+int
+PerlIO_has_base(PerlIO *f)
+{
+ if (f && *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;
+}
+
+#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;
+}
+
+#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;
+}
+
+#undef PerlIO_get_base
+STDCHAR *
+PerlIO_get_base(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_base)(f);
+}
+
+#undef PerlIO_get_bufsiz
+int
+PerlIO_get_bufsiz(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_bufsiz)(f);
+}
+
+#undef PerlIO_get_ptr
+STDCHAR *
+PerlIO_get_ptr(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_ptr)(f);
+}
+
+#undef PerlIO_get_cnt
+int
+PerlIO_get_cnt(PerlIO *f)
+{
+ return (*PerlIOBase(f)->tab->Get_cnt)(f);
+}
+
+#undef PerlIO_set_cnt
+void
+PerlIO_set_cnt(PerlIO *f,int cnt)
+{
+ (*PerlIOBase(f)->tab->Set_ptrcnt)(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);
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* "Methods" of the "base class" */
+
+IV
+PerlIOBase_fileno(PerlIO *f)
+{
+ return PerlIO_fileno(PerlIONext(f));
+}
+
+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;
+}
+
+IV
+PerlIOBase_popped(PerlIO *f)
+{
+ return 0;
+}
+
+SSize_t
+PerlIOBase_unread(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;
+}
+
+IV
+PerlIOBase_noop_ok(PerlIO *f)
+{
+ return 0;
+}
+
+IV
+PerlIOBase_noop_fail(PerlIO *f)
+{
+ return -1;
+}
+
+IV
+PerlIOBase_close(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
+PerlIOBase_eof(PerlIO *f)
+{
+ if (f && *f)
+ {
+ return (PerlIOBase(f)->flags & PERLIO_F_EOF) != 0;
+ }
+ return 1;
+}
+
+IV
+PerlIOBase_error(PerlIO *f)
+{
+ if (f && *f)
+ {
+ return (PerlIOBase(f)->flags & PERLIO_F_ERROR) != 0;
+ }
+ return 1;
+}
+
+void
+PerlIOBase_clearerr(PerlIO *f)
+{
+ if (f && *f)
+ {
+ PerlIOBase(f)->flags &= ~PERLIO_F_ERROR;
+ }
+}
+
+void
+PerlIOBase_setlinebuf(PerlIO *f)
+{
+
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* 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;
+}
+
+IV
+PerlIOUnix_fileno(PerlIO *f)
+{
+ return PerlIOSelf(f,PerlIOUnix)->fd;
+}
+
+PerlIO *
+PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode)
+{
+ 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;
+ }
+ }
+ return f;
+}
+
+PerlIO *
+PerlIOUnix_open(PerlIO_funcs *self, const char *path,const char *mode)
+{
+ PerlIO *f = NULL;
+ int oflags = PerlIOUnix_oflags(mode);
+ if (oflags != -1)
+ {
+ int fd = PerlLIO_open3(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;
+ }
+ }
+ return f;
+}
+
+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 = PerlLIO_open3(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 = 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;
+ }
+ }
+}
+
+SSize_t
+PerlIOUnix_write(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;
+ }
+ }
+}
+
+IV
+PerlIOUnix_seek(PerlIO *f, Off_t offset, int whence)
+{
+ 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)
+{
+ 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 (PerlLIO_close(fd) != 0)
+ {
+ if (errno != EINTR)
+ {
+ code = -1;
+ break;
+ }
+ }
+ 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 */
+};
+
+/*--------------------------------------------------------------------------------------*/
+/* stdio as a layer */
+
+typedef struct
+{
+ struct _PerlIO base;
+ FILE * stdio; /* The stream */
+} PerlIOStdio;
+
+IV
+PerlIOStdio_fileno(PerlIO *f)
+{
+ return fileno(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+SSize_t
+PerlIOStdio_write(PerlIO *f, const void *vbuf, Size_t count)
+{
+ return fwrite(vbuf,1,count,PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_seek(PerlIO *f, Off_t offset, int whence)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return fseek(stdio,offset,whence);
+}
+
+Off_t
+PerlIOStdio_tell(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return ftell(stdio);
+}
+
+IV
+PerlIOStdio_close(PerlIO *f)
+{
+ return fclose(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_flush(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return fflush(stdio);
+}
+
+IV
+PerlIOStdio_fill(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;
+}
+
+IV
+PerlIOStdio_eof(PerlIO *f)
+{
+ return feof(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+IV
+PerlIOStdio_error(PerlIO *f)
+{
+ return ferror(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+void
+PerlIOStdio_clearerr(PerlIO *f)
+{
+ clearerr(PerlIOSelf(f,PerlIOStdio)->stdio);
+}
+
+void
+PerlIOStdio_setlinebuf(PerlIO *f)
+{
+#ifdef HAS_SETLINEBUF
+ setlinebuf(PerlIOSelf(f,PerlIOStdio)->stdio);
+#else
+ setvbuf(PerlIOSelf(f,PerlIOStdio)->stdio, Nullch, _IOLBF, 0);
+#endif
+}
+
+#ifdef FILE_base
+STDCHAR *
+PerlIOStdio_get_base(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_base(stdio);
+}
+
+Size_t
+PerlIOStdio_get_bufsiz(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_bufsiz(stdio);
+}
+#endif
+
+#ifdef USE_STDIO_PTR
+STDCHAR *
+PerlIOStdio_get_ptr(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_ptr(stdio);
+}
+
+SSize_t
+PerlIOStdio_get_cnt(PerlIO *f)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ return FILE_cnt(stdio);
+}
+
+void
+PerlIOStdio_set_ptrcnt(PerlIO *f,STDCHAR *ptr,SSize_t cnt)
+{
+ FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
+ if (ptr != NULL)
+ {
+#ifdef STDIO_PTR_LVALUE
+ FILE_ptr(stdio) = ptr;
+#ifdef STDIO_PTR_LVAL_SETS_CNT
+ if (FILE_cnt(stdio) != (cnt))
+ {
+ dTHX;
+ assert(FILE_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 */
+#ifdef STDIO_CNT_LVALUE
+ FILE_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 */
+}
+
+#endif
+
+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,
+#ifdef FILE_base
+ PerlIOStdio_get_base,
+ PerlIOStdio_get_bufsiz,
+#else
+ NULL,
+ NULL,
+#endif
+#ifdef USE_STDIO_PTR
+ 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 */
+};
+
+#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+");
+}
+
+#undef PerlIO_findFILE
+FILE *
+PerlIO_findFILE(PerlIO *f)
+{
+ return PerlIO_exportFILE(f,0);
+}
+
+#undef PerlIO_releaseFILE
+void
+PerlIO_releaseFILE(PerlIO *p, FILE *f)
+{
+}
+
+/*--------------------------------------------------------------------------------------*/
+/* 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;
+}
+
+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;
+}
+
+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
+*/
+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;
+}
+
+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;
+}
+
+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))
+ 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;
+}
+
+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;
}
-#undef PerlIO_set_ptrcnt
-void
-PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt)
+IV
+PerlIOBuf_seek(PerlIO *f, Off_t offset, int whence)
{
-#ifdef FILE_bufsiz
- STDCHAR *e = FILE_base(f) + FILE_bufsiz(f);
- int ec = e - ptr;
- if (ptr > e + 1 && ckWARN_s(WARN_INTERNAL))
- Perl_warner(aTHX_ WARN_INTERNAL, "Setting ptr %p > end+1 %p\n", ptr, e + 1);
- if (cnt != ec && ckWARN_s(WARN_INTERNAL))
- Perl_warner(aTHX_ WARN_INTERNAL, "Setting cnt to %d, ptr implies %d\n",cnt,ec);
-#endif
-#if defined(USE_STDIO_PTR) && defined(STDIO_PTR_LVALUE)
- FILE_ptr(f) = ptr;
-#else
- Perl_croak(aTHX_ "Cannot set 'ptr' of FILE * on this system");
-#endif
-#if defined(USE_STDIO_PTR) && defined(STDIO_CNT_LVALUE)
- FILE_cnt(f) = cnt;
-#else
- Perl_croak(aTHX_ "Cannot set 'cnt' of FILE * on this system");
-#endif
+ 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));
+ }
+ }
+ return code;
}
-#undef PerlIO_get_cnt
-int
-PerlIO_get_cnt(PerlIO *f)
+Off_t
+PerlIOBuf_tell(PerlIO *f)
{
-#ifdef FILE_cnt
- return FILE_cnt(f);
-#else
- Perl_croak(aTHX_ "Cannot get 'cnt' of FILE * on this system");
- return -1;
-#endif
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ Off_t posn = b->posn;
+ if (b->buf)
+ posn += (b->ptr - b->buf);
+ return posn;
}
-#undef PerlIO_get_bufsiz
-int
-PerlIO_get_bufsiz(PerlIO *f)
+IV
+PerlIOBuf_close(PerlIO *f)
{
-#ifdef FILE_bufsiz
- return FILE_bufsiz(f);
-#else
- Perl_croak(aTHX_ "Cannot get 'bufsiz' of FILE * on this system");
- return -1;
-#endif
+ 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;
}
-#undef PerlIO_get_ptr
-STDCHAR *
-PerlIO_get_ptr(PerlIO *f)
+void
+PerlIOBuf_setlinebuf(PerlIO *f)
{
-#ifdef FILE_ptr
- return FILE_ptr(f);
-#else
- Perl_croak(aTHX_ "Cannot get 'ptr' of FILE * on this system");
- return NULL;
-#endif
+ if (f)
+ {
+ PerlIOBase(f)->flags &= ~PERLIO_F_LINEBUF;
+ }
}
-#undef PerlIO_get_base
STDCHAR *
-PerlIO_get_base(PerlIO *f)
+PerlIOBuf_get_ptr(PerlIO *f)
{
-#ifdef FILE_base
- return FILE_base(f);
-#else
- Perl_croak(aTHX_ "Cannot get 'base' of FILE * on this system");
- return NULL;
-#endif
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIO_get_base(f);
+ return b->ptr;
}
-#undef PerlIO_has_base
-int
-PerlIO_has_base(PerlIO *f)
+SSize_t
+PerlIOBuf_get_cnt(PerlIO *f)
{
-#ifdef FILE_base
- return 1;
-#else
+ 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;
-#endif
}
-#undef PerlIO_puts
-int
-PerlIO_puts(PerlIO *f, const char *s)
+STDCHAR *
+PerlIOBuf_get_base(PerlIO *f)
{
- return fputs(s,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);
+ }
+ b->ptr = b->buf;
+ b->end = b->ptr;
+ }
+ return b->buf;
}
-#undef PerlIO_open
-PerlIO *
-PerlIO_open(const char *path, const char *mode)
+Size_t
+PerlIOBuf_bufsiz(PerlIO *f)
{
- return fopen(path,mode);
+ PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
+ if (!b->buf)
+ PerlIO_get_base(f);
+ return (b->end - b->buf);
}
-#undef PerlIO_fdopen
-PerlIO *
-PerlIO_fdopen(int fd, const char *mode)
+void
+PerlIOBuf_set_ptrcnt(PerlIO *f, STDCHAR *ptr, SSize_t cnt)
{
- return fdopen(fd,mode);
+ 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;
}
-#undef PerlIO_reopen
-PerlIO *
-PerlIO_reopen(const char *name, const char *mode, PerlIO *f)
+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,
+};
+
+/*--------------------------------------------------------------------------------------*/
+/* crlf - translation currently just a copy of perlio to prove
+ that extra buffering which real one will do is not an issue.
+ */
+
+PerlIO_funcs PerlIO_crlf = {
+ "crlf",
+ 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,
+};
+
+#ifdef HAS_MMAP
+/*--------------------------------------------------------------------------------------*/
+/* mmap as "buffer" layer */
+
+typedef struct
{
- return freopen(name,mode,f);
-}
+ PerlIOBuf base; /* PerlIOBuf stuff */
+ Mmap_t mptr; /* Mapped address */
+ Size_t len; /* mapped length */
+ STDCHAR *bbuf; /* malloced buffer if map fails */
-#undef PerlIO_close
-int
-PerlIO_close(PerlIO *f)
+} PerlIOMmap;
+
+static size_t page_size = 0;
+
+IV
+PerlIOMmap_map(PerlIO *f)
{
- return fclose(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) {
+#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_PAGE_SIZE))
+ {
+ SETERRNO(0,SS$_NORMAL);
+# ifdef _SC_PAGESIZE
+ page_size = sysconf(_SC_PAGESIZE);
+# else
+ 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");
+ }
+ }
+#else
+# ifdef HAS_GETPAGESIZE
+ page_size = getpagesize();
+# else
+# if defined(I_SYS_PARAM) && defined(PAGESIZE)
+ 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;
}
-#undef PerlIO_eof
-int
-PerlIO_eof(PerlIO *f)
+IV
+PerlIOMmap_unmap(PerlIO *f)
{
- return feof(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;
}
-#undef PerlIO_getname
-char *
-PerlIO_getname(PerlIO *f, char *buf)
+STDCHAR *
+PerlIOMmap_get_base(PerlIO *f)
{
-#ifdef VMS
- return fgetname(f,buf);
-#else
- Perl_croak(aTHX_ "Don't know how to get file name");
- return NULL;
-#endif
+ 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);
}
-#undef PerlIO_getc
-int
-PerlIO_getc(PerlIO *f)
+SSize_t
+PerlIOMmap_unread(PerlIO *f, const void *vbuf, Size_t count)
{
- return fgetc(f);
+ 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);
}
-#undef PerlIO_error
-int
-PerlIO_error(PerlIO *f)
+SSize_t
+PerlIOMmap_write(PerlIO *f, const void *vbuf, Size_t count)
{
- return ferror(f);
+ 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);
}
-#undef PerlIO_clearerr
-void
-PerlIO_clearerr(PerlIO *f)
+IV
+PerlIOMmap_flush(PerlIO *f)
{
- clearerr(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;
}
-#undef PerlIO_flush
-int
-PerlIO_flush(PerlIO *f)
+IV
+PerlIOMmap_fill(PerlIO *f)
{
- return Fflush(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;
}
-#undef PerlIO_fileno
-int
-PerlIO_fileno(PerlIO *f)
+IV
+PerlIOMmap_close(PerlIO *f)
{
- return fileno(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(f) != 0)
+ code = -1;
+ return code;
}
-#undef PerlIO_setlinebuf
+
+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,
+};
+
+#endif /* HAS_MMAP */
+
void
-PerlIO_setlinebuf(PerlIO *f)
+PerlIO_init(void)
{
-#ifdef HAS_SETLINEBUF
- setlinebuf(f);
-#else
-# ifdef __BORLANDC__ /* Borland doesn't like NULL size for _IOLBF */
- setvbuf(f, Nullch, _IOLBF, BUFSIZ);
-# else
- setvbuf(f, Nullch, _IOLBF, 0);
-# endif
-#endif
+ if (!_perlio)
+ {
+ atexit(&PerlIO_cleanup);
+ }
}
-#undef PerlIO_putc
-int
-PerlIO_putc(PerlIO *f, int ch)
+#undef PerlIO_stdin
+PerlIO *
+PerlIO_stdin(void)
{
- return putc(ch,f);
+ if (!_perlio)
+ PerlIO_stdstreams();
+ return &_perlio[1];
}
-#undef PerlIO_ungetc
-int
-PerlIO_ungetc(PerlIO *f, int ch)
+#undef PerlIO_stdout
+PerlIO *
+PerlIO_stdout(void)
{
- return ungetc(ch,f);
+ if (!_perlio)
+ PerlIO_stdstreams();
+ return &_perlio[2];
}
-#undef PerlIO_read
-SSize_t
-PerlIO_read(PerlIO *f, void *buf, Size_t count)
+#undef PerlIO_stderr
+PerlIO *
+PerlIO_stderr(void)
{
- return fread(buf,1,count,f);
+ if (!_perlio)
+ PerlIO_stdstreams();
+ return &_perlio[3];
}
-#undef PerlIO_write
-SSize_t
-PerlIO_write(PerlIO *f, const void *buf, Size_t count)
+/*--------------------------------------------------------------------------------------*/
+
+#undef PerlIO_getname
+char *
+PerlIO_getname(PerlIO *f, char *buf)
{
- return fwrite1(buf,1,count,f);
+ dTHX;
+ Perl_croak(aTHX_ "Don't know how to get file name");
+ return NULL;
}
-#undef PerlIO_vprintf
-int
-PerlIO_vprintf(PerlIO *f, const char *fmt, va_list ap)
+
+/*--------------------------------------------------------------------------------------*/
+/* Functions which can be called on any kind of PerlIO implemented
+ in terms of above
+*/
+
+#undef PerlIO_getc
+int
+PerlIO_getc(PerlIO *f)
{
- return vfprintf(f,fmt,ap);
+ STDCHAR buf[1];
+ SSize_t count = PerlIO_read(f,buf,1);
+ if (count == 1)
+ {
+ return (unsigned char) buf[0];
+ }
+ return EOF;
}
-#undef PerlIO_tell
-Off_t
-PerlIO_tell(PerlIO *f)
+#undef PerlIO_ungetc
+int
+PerlIO_ungetc(PerlIO *f, int ch)
{
-#ifdef HAS_FTELLO
- return ftello(f);
-#else
- return ftell(f);
-#endif
+ if (ch != EOF)
+ {
+ STDCHAR buf = ch;
+ if (PerlIO_unread(f,&buf,1) == 1)
+ return ch;
+ }
+ return EOF;
}
-#undef PerlIO_seek
+#undef PerlIO_putc
int
-PerlIO_seek(PerlIO *f, Off_t offset, int whence)
+PerlIO_putc(PerlIO *f, int ch)
{
-#ifdef HAS_FSEEKO
- return fseeko(f,offset,whence);
-#else
- return fseek(f,offset,whence);
-#endif
+ 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);
}
#undef PerlIO_rewind
void
PerlIO_rewind(PerlIO *f)
{
- rewind(f);
+ 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);
}
#undef PerlIO_printf
-int
+int
PerlIO_printf(PerlIO *f,const char *fmt,...)
{
va_list ap;
int result;
va_start(ap,fmt);
- result = vfprintf(f,fmt,ap);
+ result = PerlIO_vprintf(f,fmt,ap);
va_end(ap);
return result;
}
#undef PerlIO_stdoutf
-int
+int
PerlIO_stdoutf(const char *fmt,...)
{
va_list ap;
PerlIO *
PerlIO_tmpfile(void)
{
- return tmpfile();
-}
-
-#undef PerlIO_importFILE
-PerlIO *
-PerlIO_importFILE(FILE *f, int fl)
-{
- return f;
-}
-
-#undef PerlIO_exportFILE
-FILE *
-PerlIO_exportFILE(PerlIO *f, int fl)
-{
- return f;
-}
-
-#undef PerlIO_findFILE
-FILE *
-PerlIO_findFILE(PerlIO *f)
-{
+ 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;
+ }
+ PerlLIO_unlink(SvPVX(sv));
+ SvREFCNT_dec(sv);
+ }
return f;
}
-#undef PerlIO_releaseFILE
-void
-PerlIO_releaseFILE(PerlIO *p, FILE *f)
-{
-}
-
-void
-PerlIO_init(void)
-{
- /* 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 HAS_FSETPOS
+#undef HAS_FGETPOS
#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
+ */
+
#ifndef HAS_FSETPOS
#undef PerlIO_setpos
int
PerlIO_setpos(PerlIO *f, const Fpos_t *pos)
{
- return PerlIO_seek(f,*pos,0);
+ return PerlIO_seek(f,*pos,0);
}
#else
#ifndef PERLIO_IS_STDIO
int
PerlIO_setpos(PerlIO *f, const Fpos_t *pos)
{
+#if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64)
+ return fsetpos64(f, pos);
+#else
return fsetpos(f, pos);
+#endif
}
#endif
#endif
PerlIO_getpos(PerlIO *f, Fpos_t *pos)
{
*pos = PerlIO_tell(f);
- return 0;
+ return *pos == -1 ? -1 : 0;
}
#else
#ifndef PERLIO_IS_STDIO
int
PerlIO_getpos(PerlIO *f, Fpos_t *pos)
{
+#if defined(USE_64_BIT_STDIO) && defined(USE_FSETPOS64)
+ return fgetpos64(f, pos);
+#else
return fgetpos(f, pos);
+#endif
}
#endif
#endif
#endif
#ifndef PerlIO_vsprintf
-int
+int
PerlIO_vsprintf(char *s, int n, const char *fmt, va_list ap)
{
int val = vsprintf(s, fmt, ap);
{
if (strlen(s) >= (STRLEN)n)
{
- PerlIO_puts(PerlIO_stderr(),"panic: sprintf overflow - memory corrupted!\n");
- {
- dTHX;
- my_exit(1);
- }
+ dTHX;
+ (void)PerlIO_puts(Perl_error_log,
+ "panic: sprintf overflow - memory corrupted!\n");
+ my_exit(1);
}
}
return val;
#endif
#ifndef PerlIO_sprintf
-int
+int
PerlIO_sprintf(char *s, int n, const char *fmt,...)
{
va_list ap;
https://perl5.git.perl.org / perl5.git / blobdiff