/* perlio.c
*
- * Copyright (c) 1996-2000, Nick Ing-Simmons
+ * Copyright (c) 1996-2001, 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.
#undef PerlMemShared_free
#define PerlMemShared_free(x) free(x)
-
-#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;
-}
-
int
perlsio_binmode(FILE *fp, int iotype, int mode)
{
}
return 0;
# else
+ dTHX;
if (PerlLIO_setmode(fileno(fp), mode) != -1) {
# if defined(WIN32) && defined(__BORLANDC__)
/* The translation mode of the stream is maintained independent
#endif
}
+#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;
+}
+
int
PerlIO_binmode(pTHX_ PerlIO *fp, int iotype, int mode, const char *names)
{
if (l)
{
PerlIO_debug("PerlIO_pop f=%p %s\n",f,l->tab->name);
- (*l->tab->Popped)(f);
+ if (l->tab->Popped)
+ (*l->tab->Popped)(f);
*f = l->next;
PerlMemShared_free(l);
}
dTHX;
HV *stash = gv_stashpv("perlio::Layer", TRUE);
SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(tab))),stash);
+ if (!PerlIO_layer_hv)
+ {
+ PerlIO_layer_hv = get_hv("open::layers",GV_ADD|GV_ADDMULTI);
+ }
hv_store(PerlIO_layer_hv,tab->name,strlen(tab->name),sv,0);
+ PerlIO_debug("define %s %p\n",tab->name,tab);
}
+void
+PerlIO_default_buffer(pTHX)
+{
+ PerlIO_funcs *tab = &PerlIO_perlio;
+ if (O_BINARY != O_TEXT)
+ {
+ tab = &PerlIO_crlf;
+ }
+ else
+ {
+ if (PerlIO_stdio.Set_ptrcnt)
+ {
+ tab = &PerlIO_stdio;
+ }
+ }
+ PerlIO_debug("Pushing %s\n",tab->name);
+ av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(tab->name,0)));
+}
+
+
PerlIO_funcs *
PerlIO_default_layer(I32 n)
{
SV *layer;
PerlIO_funcs *tab = &PerlIO_stdio;
int len;
- if (!PerlIO_layer_hv)
+ if (!PerlIO_layer_av)
{
const char *s = PerlEnv_getenv("PERLIO");
+ PerlIO_layer_av = get_av("open::layers",GV_ADD|GV_ADDMULTI);
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_raw);
PerlIO_define_layer(&PerlIO_unix);
PerlIO_define_layer(&PerlIO_perlio);
PerlIO_define_layer(&PerlIO_stdio);
#ifdef HAS_MMAP
PerlIO_define_layer(&PerlIO_mmap);
#endif
+ PerlIO_define_layer(&PerlIO_utf8);
+ PerlIO_define_layer(&PerlIO_byte);
av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_unix.name,0)));
if (s)
{
+ IV buffered = 0;
while (*s)
{
while (*s && isSPACE((unsigned char)*s))
layer = PerlIO_find_layer(s,e-s);
if (layer)
{
+ PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer)));
+ if ((tab->kind & PERLIO_K_DUMMY) && (tab->kind & PERLIO_K_BUFFERED))
+ {
+ if (!buffered)
+ PerlIO_default_buffer(aTHX);
+ }
PerlIO_debug("Pushing %.*s\n",(e-s),s);
av_push(PerlIO_layer_av,SvREFCNT_inc(layer));
+ buffered |= (tab->kind & PERLIO_K_BUFFERED);
}
else
Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(e-s),s);
len = av_len(PerlIO_layer_av);
if (len < 1)
{
- if (O_BINARY != O_TEXT)
- {
- av_push(PerlIO_layer_av,SvREFCNT_inc(PerlIO_find_layer(PerlIO_crlf.name,0)));
- }
- else
- {
- 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)));
- }
- }
+ PerlIO_default_buffer(aTHX);
len = av_len(PerlIO_layer_av);
}
if (n < 0)
l->next = *f;
l->tab = tab;
*f = l;
- PerlIO_debug("PerlIO_push f=%p %s %s\n",f,tab->name,(mode) ? mode : "(Null)");
+ PerlIO_debug("PerlIO_push f=%p %s %s '%.*s'\n",
+ f,tab->name,(mode) ? mode : "(Null)",(int) len,arg);
if ((*l->tab->Pushed)(f,mode,arg,len) != 0)
{
PerlIO_pop(f);
return f;
}
+IV
+PerlIOPop_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ PerlIO_pop(f);
+ if (*f)
+ {
+ PerlIO_flush(f);
+ PerlIO_pop(f);
+ return 0;
+ }
+ return -1;
+}
+
+IV
+PerlIORaw_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ /* Remove the dummy layer */
+ PerlIO_pop(f);
+ /* Pop back to bottom layer */
+ if (f && *f)
+ {
+ int code = 0;
+ PerlIO_flush(f);
+ while (!(PerlIOBase(f)->tab->kind & PERLIO_K_RAW))
+ {
+ if (*PerlIONext(f))
+ {
+ PerlIO_pop(f);
+ }
+ else
+ {
+ /* Nothing bellow - push unix on top then remove it */
+ if (PerlIO_push(f,PerlIO_default_btm(),mode,arg,len))
+ {
+ PerlIO_pop(PerlIONext(f));
+ }
+ break;
+ }
+ }
+ PerlIO_debug(":raw f=%p :%s\n",f,PerlIOBase(f)->tab->name);
+ return 0;
+ }
+ return -1;
+}
+
int
PerlIO_apply_layers(pTHX_ PerlIO *f, const char *mode, const char *names)
{
const char *s = names;
while (*s)
{
- while (isSPACE(*s))
- s++;
- if (*s == ':')
+ while (isSPACE(*s) || *s == ':')
s++;
if (*s)
{
+ STRLEN llen = 0;
const char *e = s;
const char *as = Nullch;
- const char *ae = Nullch;
- int count = 0;
- while (*e && *e != ':' && !isSPACE(*e))
+ STRLEN alen = 0;
+ if (!isIDFIRST(*s))
{
- if (*e == '(')
- {
- if (!as)
- as = e;
- count++;
- }
- else if (*e == ')')
- {
- if (as && --count == 0)
- ae = e;
- }
- e++;
+ /* 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 == '\'') ? '"' : '\'');
+ Perl_warn(aTHX_ "perlio: invalid separator character %c%c%c in layer specification list", q, *s, q);
+ return -1;
}
- if (e > s)
+ do
{
- if ((e - s) == 3 && strncmp(s,"raw",3) == 0)
+ e++;
+ } while (isALNUM(*e));
+ llen = e-s;
+ if (*e == '(')
+ {
+ int nesting = 1;
+ as = ++e;
+ while (nesting)
{
- /* Pop back to bottom layer */
- if (PerlIONext(f))
+ switch (*e++)
{
- PerlIO_flush(f);
- while (PerlIONext(f))
- {
- PerlIO_pop(f);
- }
+ 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--;
+ Perl_warn(aTHX_ "perlio: argument list not closed for layer \"%.*s\"",(int)(e - s),s);
+ return -1;
+ default:
+ /* boring. */
+ break;
}
}
- else if ((e - s) == 4 && strncmp(s,"utf8",4) == 0)
- {
- PerlIOBase(f)->flags |= PERLIO_F_UTF8;
- }
- else if ((e - s) == 5 && strncmp(s,"bytes",5) == 0)
- {
- PerlIOBase(f)->flags &= ~PERLIO_F_UTF8;
- }
- else
+ }
+ if (e > s)
+ {
+ SV *layer = PerlIO_find_layer(s,llen);
+ if (layer)
{
- STRLEN len = ((as) ? as : e)-s;
- SV *layer = PerlIO_find_layer(s,len);
- if (layer)
+ PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer)));
+ if (tab)
{
- PerlIO_funcs *tab = INT2PTR(PerlIO_funcs *, SvIV(SvRV(layer)));
- if (tab)
- {
- len = (as) ? (ae-(as++)-1) : 0;
- if (!PerlIO_push(f,tab,mode,as,len))
- return -1;
- }
+ if (!PerlIO_push(f,tab,mode,as,alen))
+ return -1;
}
- else
- Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)len,s);
}
+ else
+ Perl_warn(aTHX_ "perlio: unknown layer \"%.*s\"",(int)llen,s);
}
s = e;
}
{
if (f)
{
- return (*PerlIOBase(f)->tab->Flush)(f);
+ PerlIO_funcs *tab = PerlIOBase(f)->tab;
+ if (tab && tab->Flush)
+ {
+ return (*tab->Flush)(f);
+ }
+ else
+ {
+ PerlIO_debug("Cannot flush f=%p :%s\n",f,tab->name);
+ errno = EINVAL;
+ return -1;
+ }
}
else
{
}
/*--------------------------------------------------------------------------------------*/
+/* utf8 and raw dummy layers */
+
+IV
+PerlIOUtf8_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ if (PerlIONext(f))
+ {
+ PerlIO_funcs *tab = PerlIOBase(f)->tab;
+ PerlIO_pop(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 *
+PerlIOUtf8_fdopen(PerlIO_funcs *self, int fd,const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_layer(-2);
+ PerlIO *f = (*tab->Fdopen)(tab,fd,mode);
+ if (f)
+ {
+ PerlIOl *l = PerlIOBase(f);
+ if (tab->kind & PERLIO_K_UTF8)
+ l->flags |= PERLIO_F_UTF8;
+ else
+ l->flags &= ~PERLIO_F_UTF8;
+ }
+ return f;
+}
+
+PerlIO *
+PerlIOUtf8_open(PerlIO_funcs *self, const char *path,const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_layer(-2);
+ PerlIO *f = (*tab->Open)(tab,path,mode);
+ if (f)
+ {
+ PerlIOl *l = PerlIOBase(f);
+ if (tab->kind & PERLIO_K_UTF8)
+ l->flags |= PERLIO_F_UTF8;
+ else
+ l->flags &= ~PERLIO_F_UTF8;
+ }
+ return f;
+}
+
+PerlIO_funcs PerlIO_utf8 = {
+ "utf8",
+ sizeof(PerlIOl),
+ PERLIO_K_DUMMY|PERLIO_F_UTF8,
+ NULL,
+ PerlIOUtf8_fdopen,
+ PerlIOUtf8_open,
+ NULL,
+ PerlIOUtf8_pushed,
+ 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,
+ NULL,
+ PerlIOUtf8_fdopen,
+ PerlIOUtf8_open,
+ NULL,
+ PerlIOUtf8_pushed,
+ 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_fdopen(PerlIO_funcs *self, int fd,const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_btm();
+ return (*tab->Fdopen)(tab,fd,mode);
+}
+
+PerlIO *
+PerlIORaw_open(PerlIO_funcs *self, const char *path,const char *mode)
+{
+ PerlIO_funcs *tab = PerlIO_default_btm();
+ return (*tab->Open)(tab,path,mode);
+}
+
+PerlIO_funcs PerlIO_raw = {
+ "raw",
+ sizeof(PerlIOl),
+ PERLIO_K_DUMMY,
+ NULL,
+ PerlIORaw_fdopen,
+ PerlIORaw_open,
+ NULL,
+ PerlIORaw_pushed,
+ PerlIOBase_popped,
+ 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
return 0;
}
-extern PerlIO_funcs PerlIO_pending;
-
SSize_t
PerlIOBase_unread(PerlIO *f, const void *vbuf, Size_t count)
{
-#if 0
Off_t old = PerlIO_tell(f);
- if (0 && PerlIO_seek(f,-((Off_t)count),SEEK_CUR) == 0)
- {
- Off_t new = PerlIO_tell(f);
- return old - new;
- }
- else
- {
- return 0;
- }
-#else
+ SSize_t done;
PerlIO_push(f,&PerlIO_pending,"r",Nullch,0);
- return PerlIOBuf_unread(f,vbuf,count);
-#endif
+ done = PerlIOBuf_unread(f,vbuf,count);
+ PerlIOSelf(f,PerlIOBuf)->posn = old - done;
+ return done;
}
IV
return PerlIOSelf(f,PerlIOUnix)->fd;
}
+IV
+PerlIOUnix_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ IV code = PerlIOBase_pushed(f,mode,arg,len);
+ if (*PerlIONext(f))
+ {
+ PerlIOUnix *s = PerlIOSelf(f,PerlIOUnix);
+ s->fd = PerlIO_fileno(PerlIONext(f));
+ s->oflags = PerlIOUnix_oflags(mode);
+ }
+ PerlIOBase(f)->flags |= PERLIO_F_OPEN;
+ return code;
+}
+
PerlIO *
PerlIOUnix_fdopen(PerlIO_funcs *self, int fd,const char *mode)
{
PerlIOUnix *s = PerlIOSelf(PerlIO_push(f = PerlIO_allocate(aTHX),self,mode,Nullch,0),PerlIOUnix);
s->fd = fd;
s->oflags = oflags;
- PerlIOBase(f)->flags |= PERLIO_F_OPEN;
}
}
return f;
PerlIOBase(f)->flags |= PERLIO_F_EOF;
return len;
}
+ PERL_ASYNC_CHECK();
}
}
PerlIOBase(f)->flags |= PERLIO_F_ERROR;
return len;
}
+ PERL_ASYNC_CHECK();
}
}
code = -1;
break;
}
+ PERL_ASYNC_CHECK();
}
if (code == 0)
{
PerlIOUnix_fdopen,
PerlIOUnix_open,
PerlIOUnix_reopen,
- PerlIOBase_pushed,
+ PerlIOUnix_pushed,
PerlIOBase_noop_ok,
PerlIOUnix_read,
PerlIOBase_unread,
return f;
}
+/* This isn't used yet ... */
+IV
+PerlIOStdio_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ 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;
+ else
+ return -1;
+ }
+ return PerlIOBase_pushed(f,mode,arg,len);
+}
+
#undef PerlIO_importFILE
PerlIO *
PerlIO_importFILE(FILE *stdio, int fl)
FILE *
PerlIO_exportFILE(PerlIO *f, int fl)
{
+ FILE *stdio;
PerlIO_flush(f);
- /* Should really push stdio discipline when we have them */
- return fdopen(PerlIO_fileno(f),"r+");
+ stdio = fdopen(PerlIO_fileno(f),"r+");
+ if (stdio)
+ {
+ PerlIOStdio *s = PerlIOSelf(PerlIO_push(f,&PerlIO_stdio,"r+",Nullch,0),PerlIOStdio);
+ s->stdio = stdio;
+ }
+ return stdio;
}
#undef PerlIO_findFILE
FILE *
PerlIO_findFILE(PerlIO *f)
{
+ 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);
}
if (PerlIOBase(f)->flags & PERLIO_F_WRBUF)
{
/* write() the buffer */
- STDCHAR *buf = PerlIO_get_base(f);
+ STDCHAR *buf = b->buf;
STDCHAR *p = buf;
- int count;
PerlIO *n = PerlIONext(f);
while (p < b->ptr)
{
- count = PerlIO_write(n,p,b->ptr - p);
+ SSize_t count = PerlIO_write(n,p,b->ptr - p);
if (count > 0)
{
p += count;
{
PerlIOBuf *b = PerlIOSelf(f,PerlIOBuf);
PerlIO *n = PerlIONext(f);
- STDCHAR *buf;
SSize_t avail;
/* FIXME: doing the down-stream flush is a bad idea if it causes
pre-read data in stdio buffer to be discarded
if (PerlIO_flush(f) != 0)
return -1;
- b->ptr = b->end = buf = PerlIO_get_base(f);
+ 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
PerlIOBase(f)->flags |= PERLIO_F_ERROR;
return -1;
}
- b->end = buf+avail;
+ b->end = b->buf+avail;
PerlIOBase(f)->flags |= PERLIO_F_RDBUF;
return 0;
}
IV
PerlIOPending_pushed(PerlIO *f,const char *mode,const char *arg,STRLEN len)
{
- IV code = PerlIOBuf_pushed(f,mode,arg,len);
+ IV code = PerlIOBase_pushed(f,mode,arg,len);
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) |
- (PerlIOBase(PerlIONext(f))->flags & PERLIO_F_FASTGETS);
+ l->flags = (l->flags & ~(PERLIO_F_FASTGETS|PERLIO_F_UTF8)) |
+ (PerlIOBase(PerlIONext(f))->flags & (PERLIO_F_FASTGETS|PERLIO_F_UTF8));
return code;
}
}
posn = (b->posn / page_size) * page_size;
len = st.st_size - posn;
- m->mptr = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, posn);
+ m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
if (m->mptr && m->mptr != (Mmap_t) -1)
{
-#if defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL)
+#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);
}
}
+
+
#undef PerlIO_stdin
PerlIO *
PerlIO_stdin(void)
projects / p5sagit/p5-mst-13.2.git / blobdiff