X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perlio.c;h=c8047f80d2cbf0b11d4df591e53e1a50cbd0f903;hb=ec861bc19fa3da942464628dd3e86e9b82994ca4;hp=a6b45be4f58e3b2f64c82409f5cbfc98b8c3ebe3;hpb=72e44f29ea535faa4a4afab64f5101668334125d;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/perlio.c b/perlio.c
index a6b45be..c8047f8 100644
--- a/perlio.c
+++ b/perlio.c
@@ -1,6 +1,6 @@
 /*    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.
@@ -33,20 +33,6 @@
 #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)
 {
@@ -62,6 +48,7 @@ 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
@@ -93,6 +80,19 @@ perlsio_binmode(FILE *fp, int iotype, int mode)
 #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)
 {
@@ -283,7 +283,8 @@ PerlIO_pop(PerlIO *f)
  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);
   }
@@ -416,9 +417,34 @@ PerlIO_define_layer(PerlIO_funcs *tab)
  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)
 {
@@ -427,16 +453,16 @@ 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);
@@ -444,9 +470,12 @@ PerlIO_default_layer(I32 n)
 #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))
@@ -462,8 +491,15 @@ PerlIO_default_layer(I32 n)
          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);
@@ -475,21 +511,7 @@ PerlIO_default_layer(I32 n)
  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)
@@ -531,7 +553,8 @@ PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN
    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);
@@ -541,6 +564,51 @@ PerlIO_push(PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN
  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)
 {
@@ -549,70 +617,77 @@ 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);
+	  return -1;
+	 }
         }
        s = e;
       }
@@ -771,7 +846,17 @@ PerlIO_flush(PerlIO *f)
 {
  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
   {
@@ -937,6 +1022,158 @@ PerlIO_set_ptrcnt(PerlIO *f, STDCHAR *ptr, int cnt)
 }
 
 /*--------------------------------------------------------------------------------------*/
+/* 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
@@ -1198,6 +1435,20 @@ PerlIOUnix_fileno(PerlIO *f)
  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)
 {
@@ -1213,7 +1464,6 @@ 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;
@@ -1279,6 +1529,7 @@ PerlIOUnix_read(PerlIO *f, void *vbuf, Size_t count)
       PerlIOBase(f)->flags |= PERLIO_F_EOF;
      return len;
     }
+   PERL_ASYNC_CHECK();
   }
 }
 
@@ -1296,6 +1547,7 @@ PerlIOUnix_write(PerlIO *f, const void *vbuf, Size_t count)
       PerlIOBase(f)->flags |= PERLIO_F_ERROR;
      return len;
     }
+   PERL_ASYNC_CHECK();
   }
 }
 
@@ -1329,6 +1581,7 @@ PerlIOUnix_close(PerlIO *f)
      code = -1;
      break;
     }
+   PERL_ASYNC_CHECK();
   }
  if (code == 0)
   {
@@ -1345,7 +1598,7 @@ PerlIO_funcs PerlIO_unix = {
  PerlIOUnix_fdopen,
  PerlIOUnix_open,
  PerlIOUnix_reopen,
- PerlIOBase_pushed,
+ PerlIOUnix_pushed,
  PerlIOBase_noop_ok,
  PerlIOUnix_read,
  PerlIOBase_unread,
@@ -1441,6 +1694,24 @@ PerlIOStdio_fdopen(PerlIO_funcs *self, int fd,const char *mode)
  return f;
 }
 
+/* This isn't used yet ... */
+IV
+PerlIOStdio_pushed(PerlIO *f, const char *mode, const char *arg, STRLEN len)
+{
+ dTHX;
+ 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)
@@ -1554,12 +1825,12 @@ IV
 PerlIOStdio_close(PerlIO *f)
 {
  dTHX;
-#ifdef HAS_SOCKET
+#ifdef HAS_SOCKS5_INIT
  int optval, optlen = sizeof(int);
 #endif
  FILE *stdio = PerlIOSelf(f,PerlIOStdio)->stdio;
  return(
-#ifdef HAS_SOCKET
+#ifdef HAS_SOCKS5_INIT
    (getsockopt(PerlIO_fileno(f), SOL_SOCKET, SO_TYPE, (char *)&optval, &optlen) < 0) ?
        PerlSIO_fclose(stdio) :
        close(PerlIO_fileno(f))
@@ -1767,15 +2038,31 @@ PerlIO_funcs PerlIO_stdio = {
 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);
 }
 
@@ -1864,11 +2151,10 @@ PerlIOBuf_flush(PerlIO *f)
    /* write() the buffer */
    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;
@@ -2985,6 +3271,8 @@ PerlIO_init(void)
   }
 }
 
+
+
 #undef PerlIO_stdin
 PerlIO *
 PerlIO_stdin(void)