Improve description of the -s switch.

[p5sagit/p5-mst-13.2.git] / gv.c

diff --git a/gv.c b/gv.c
index e1b1e94..c36cef8 100644 (file)
--- a/gv.c
+++ b/gv.c
@@ -1,7 +1,7 @@
 /*    gv.c
  *
  *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- *    2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
+ *    2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -73,8 +73,21 @@ Perl_gv_HVadd(pTHX_ register GV *gv)
 GV *
 Perl_gv_IOadd(pTHX_ register GV *gv)
 {
-    if (!gv || SvTYPE((SV*)gv) != SVt_PVGV)
-       Perl_croak(aTHX_ "Bad symbol for filehandle");
+    if (!gv || SvTYPE((SV*)gv) != SVt_PVGV) {
+
+        /*
+         * if it walks like a dirhandle, then let's assume that
+         * this is a dirhandle.
+         */
+        const char *fh = PL_op->op_type == OP_READDIR ||
+                         PL_op->op_type ==  OP_TELLDIR ||
+                         PL_op->op_type ==  OP_SEEKDIR ||
+                         PL_op->op_type ==  OP_REWINDDIR ||
+                         PL_op->op_type ==  OP_CLOSEDIR ?
+                         "dirhandle" : "filehandle";
+        Perl_croak(aTHX_ "Bad symbol for %s", fh);
+    }
+
     if (!GvIOp(gv)) {
 #ifdef GV_UNIQUE_CHECK
         if (GvUNIQUE(gv)) {
@@ -279,7 +292,7 @@ Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level)
     /* UNIVERSAL methods should be callable without a stash */
     if (!stash) {
        level = -1;  /* probably appropriate */
-       if(!(stash = gv_stashpvn("UNIVERSAL", 9, FALSE)))
+       if(!(stash = gv_stashpvs("UNIVERSAL", FALSE)))
            return 0;
     }
 
@@ -362,7 +375,7 @@ Perl_gv_fetchmeth(pTHX_ HV *stash, const char *name, STRLEN len, I32 level)
     /* if at top level, try UNIVERSAL */
 
     if (level == 0 || level == -1) {
-       HV* const lastchance = gv_stashpvn("UNIVERSAL", 9, FALSE);
+       HV* const lastchance = gv_stashpvs("UNIVERSAL", FALSE);
 
        if (lastchance) {
            if ((gv = gv_fetchmeth(lastchance, name, len,
@@ -613,7 +626,7 @@ Perl_gv_autoload4(pTHX_ HV *stash, const char *name, STRLEN len, I32 method)
     LEAVE;
     varsv = GvSVn(vargv);
     sv_setpvn(varsv, packname, packname_len);
-    sv_catpvn(varsv, "::", 2);
+    sv_catpvs(varsv, "::");
     sv_catpvn(varsv, name, len);
     SvTAINTED_off(varsv);
     return gv;
@@ -626,7 +639,7 @@ STATIC void
 S_require_errno(pTHX_ GV *gv)
 {
     dVAR;
-    HV* stash = gv_stashpvn("Errno",5,FALSE);
+    HV* stash = gv_stashpvs("Errno", FALSE);
 
     if (!stash || !(gv_fetchmethod(stash, "TIEHASH"))) {
        dSP;
@@ -634,10 +647,10 @@ S_require_errno(pTHX_ GV *gv)
        ENTER;
        save_scalar(gv); /* keep the value of $! */
         Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT,
-                         newSVpvn("Errno",5), Nullsv);
+                         newSVpvs("Errno"), Nullsv);
        LEAVE;
        SPAGAIN;
-       stash = gv_stashpvn("Errno",5,FALSE);
+       stash = gv_stashpvs("Errno", FALSE);
        if (!stash || !(gv_fetchmethod(stash, "TIEHASH")))
            Perl_croak(aTHX_ "Can't use %%! because Errno.pm is not available");
     }
@@ -675,7 +688,7 @@ package does not exist then NULL is returned.
 HV*
 Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create)
 {
-    char smallbuf[256];
+    char smallbuf[128];
     char *tmpbuf;
     HV *stash;
     GV *tmpgv;
@@ -688,7 +701,7 @@ Perl_gv_stashpvn(pTHX_ const char *name, U32 namelen, I32 create)
     tmpbuf[namelen++] = ':';
     tmpbuf[namelen++] = ':';
     tmpbuf[namelen] = '\0';
-    tmpgv = gv_fetchpv(tmpbuf, create, SVt_PVHV);
+    tmpgv = gv_fetchpvn_flags(tmpbuf, namelen, create, SVt_PVHV);
     if (tmpbuf != smallbuf)
        Safefree(tmpbuf);
     if (!tmpgv)
@@ -761,7 +774,7 @@ Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
 
            len = namend - name;
            if (len > 0) {
-               char smallbuf[256];
+               char smallbuf[128];
                char *tmpbuf;
 
                if (len + 3 < sizeof (smallbuf))
@@ -887,7 +900,7 @@ Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
            if (USE_UTF8_IN_NAMES)
                SvUTF8_on(err);
            qerror(err);
-           stash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
+           stash = GvHV(gv_fetchpvn_flags("<none>::", 8, GV_ADDMULTI, SVt_PVHV));
        }
        else
            return Nullgv;
@@ -1168,7 +1181,7 @@ Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
        {
            SV * const sv = GvSVn(gv);
            if (!sv_derived_from(PL_patchlevel, "version"))
-               (void *)upg_version(PL_patchlevel);
+               upg_version(PL_patchlevel);
            GvSV(gv) = vnumify(PL_patchlevel);
            SvREADONLY_on(GvSV(gv));
            SvREFCNT_dec(sv);
@@ -1209,7 +1222,7 @@ Perl_gv_fullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain)
 
     if (keepmain || strNE(name, "main")) {
        sv_catpvn(sv,name,namelen);
-       sv_catpvn(sv,"::", 2);
+       sv_catpvs(sv,"::");
     }
     sv_catpvn(sv,GvNAME(gv),GvNAMELEN(gv));
 }
@@ -1235,10 +1248,10 @@ Perl_newIO(pTHX)
     SvOBJECT_on(io);
     /* Clear the stashcache because a new IO could overrule a package name */
     hv_clear(PL_stashcache);
-    iogv = gv_fetchpv("FileHandle::", 0, SVt_PVHV);
+    iogv = gv_fetchpvn_flags("FileHandle::", 12, 0, SVt_PVHV);
     /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */
     if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv))))
-      iogv = gv_fetchpv("IO::Handle::", TRUE, SVt_PVHV);
+      iogv = gv_fetchpvn_flags("IO::Handle::", 12, TRUE, SVt_PVHV);
     SvSTASH_set(io, (HV*)SvREFCNT_inc(GvHV(iogv)));
     return io;
 }