hardcode the distribution name in Changes, to reduce churn on each release

[p5sagit/Sub-Name.git] / Name.xs

diff --git a/Name.xs b/Name.xs
index a338c3c..312485f 100644 (file)
--- a/Name.xs
+++ b/Name.xs
@@ -1,15 +1,26 @@
-/* $Id: Name.xs,v 1.5 2004/08/18 13:21:44 xmath Exp $
- * Copyright (C) 2004  Matthijs van Duin.  All rights reserved.
- * This program is free software; you can redistribute it and/or modify 
+/* Copyright (C) 2004, 2008  Matthijs van Duin.  All rights reserved.
+ * Copyright (C) 2014, cPanel Inc.  All rights reserved.
+ * This program is free software; you can redistribute it and/or modify
  * it under the same terms as Perl itself.
  */
 
 #include "EXTERN.h"
 #include "perl.h"
 #include "XSUB.h"
+#include "ppport.h"
 
-#ifdef USE_5005THREADS
-#error "Not compatible with 5.005 threads"
+static MGVTBL subname_vtbl;
+
+#ifndef PERL_MAGIC_ext
+# define PERL_MAGIC_ext '~'
+#endif
+
+#ifndef SvMAGIC_set
+#define SvMAGIC_set(sv, val) (SvMAGIC(sv) = (val))
+#endif
+
+#ifndef Newxz
+#define Newxz(ptr, num, type)  Newz(0, ptr, num, type)
 #endif
 
 MODULE = Sub::Name  PACKAGE = Sub::Name
@@ -24,7 +35,8 @@ subname(name, sub)
        CV *cv = NULL;
        GV *gv;
        HV *stash = CopSTASH(PL_curcop);
-       char *s, *end = NULL, saved;
+       char *s, *end = NULL;
+       MAGIC *mg;
     PPCODE:
        if (!SvROK(sub) && SvGMAGICAL(sub))
                mg_get(sub);
@@ -35,7 +47,8 @@ subname(name, sub)
        else if (!SvOK(sub))
                croak(PL_no_usym, "a subroutine");
        else if (PL_op->op_private & HINT_STRICT_REFS)
-               croak(PL_no_symref, SvPV_nolen(sub), "a subroutine");
+               croak("Can't use string (\"%.32s\") as %s ref while \"strict refs\" in use",
+                     SvPV_nolen(sub), "a subroutine");
        else if ((gv = gv_fetchpv(SvPV_nolen(sub), FALSE, SVt_PVCV)))
                cv = GvCVu(gv);
        if (!cv)
@@ -49,15 +62,69 @@ subname(name, sub)
                        end = s;
        }
        s--;
-       if (end) {
-               saved = *end;
-               *end = 0;
-               stash = GvHV(gv_fetchpv(name, TRUE, SVt_PVHV));
-               *end = saved;
-               name = end;
+        if (end) {
+               char *namepv = savepvn(name, end - name);
+               stash = GvHV(gv_fetchpv(namepv, TRUE, SVt_PVHV));
+               Safefree(namepv);
+                name = end;
+        }
+
+       /* under debugger, provide information about sub location */
+       if (PL_DBsub && CvGV(cv)) {
+               HV *hv = GvHV(PL_DBsub);
+               SV** old_data;
+
+               char* new_pkg = HvNAME(stash);
+
+               char* old_name = GvNAME( CvGV(cv) );
+               char* old_pkg = HvNAME( GvSTASH(CvGV(cv)) );
+
+               int old_len = strlen(old_name) + strlen(old_pkg);
+               int new_len = strlen(name) + strlen(new_pkg);
+
+               char* full_name;
+               Newxz(full_name, (old_len > new_len ? old_len : new_len) + 3, char);
+
+               strcat(full_name, old_pkg);
+               strcat(full_name, "::");
+               strcat(full_name, old_name);
+
+               old_data = hv_fetch(hv, full_name, strlen(full_name), 0);
+
+               if (old_data) {
+                       strcpy(full_name, new_pkg);
+                       strcat(full_name, "::");
+                       strcat(full_name, name);
+
+                       SvREFCNT_inc(*old_data);
+                       if (!hv_store(hv, full_name, strlen(full_name), *old_data, 0))
+                               SvREFCNT_dec(*old_data);
+               }
+               Safefree(full_name);
        }
+
        gv = (GV *) newSV(0);
        gv_init(gv, stash, name, s - name, TRUE);
-       av_store((AV *) AvARRAY(CvPADLIST(cv))[0], 0, (SV *) gv);
+
+       mg = SvMAGIC(cv);
+       while (mg && mg->mg_virtual != &subname_vtbl)
+               mg = mg->mg_moremagic;
+       if (!mg) {
+               Newxz(mg, 1, MAGIC);
+               mg->mg_moremagic = SvMAGIC(cv);
+               mg->mg_type = PERL_MAGIC_ext;
+               mg->mg_virtual = &subname_vtbl;
+               SvMAGIC_set(cv, mg);
+       }
+       if (mg->mg_flags & MGf_REFCOUNTED)
+               SvREFCNT_dec(mg->mg_obj);
+       mg->mg_flags |= MGf_REFCOUNTED;
+       mg->mg_obj = (SV *) gv;
+       SvRMAGICAL_on(cv);
+       CvANON_off(cv);
+#ifndef CvGV_set
        CvGV(cv) = gv;
+#else
+       CvGV_set(cv, gv);
+#endif
        PUSHs(sub);