1 files changed, 125 insertions, 27 deletions

diff --git a/gnu/usr.bin/perl/ext/NDBM_File/NDBM_File.xs b/gnu/usr.bin/perl/ext/NDBM_File/NDBM_File.xs
index d129a9c4905..49a1db5e565 100644
--- a/gnu/usr.bin/perl/ext/NDBM_File/NDBM_File.xs
+++ b/gnu/usr.bin/perl/ext/NDBM_File/NDBM_File.xs
@@ -3,39 +3,80 @@
 #include "XSUB.h"
 #include <ndbm.h>
 
-typedef DBM* NDBM_File;
-#define dbm_TIEHASH(dbtype,filename,flags,mode) dbm_open(filename,flags,mode)
-#define dbm_FETCH(db,key)			dbm_fetch(db,key)
-#define dbm_STORE(db,key,value,flags)		dbm_store(db,key,value,flags)
-#define dbm_DELETE(db,key)			dbm_delete(db,key)
-#define dbm_FIRSTKEY(db)			dbm_firstkey(db)
-#define dbm_NEXTKEY(db,key)			dbm_nextkey(db)
+typedef struct {
+	DBM * 	dbp ;
+	SV *    filter_fetch_key ;
+	SV *    filter_store_key ;
+	SV *    filter_fetch_value ;
+	SV *    filter_store_value ;
+	int     filtering ;
+	} NDBM_File_type;
 
-MODULE = NDBM_File	PACKAGE = NDBM_File	PREFIX = dbm_
+typedef NDBM_File_type * NDBM_File ;
+typedef datum datum_key ;
+typedef datum datum_value ;
+
+#define ckFilter(arg,type,name)					\
+	if (db->type) {						\
+	    SV * save_defsv ;					\
+            /* printf("filtering %s\n", name) ;*/		\
+	    if (db->filtering)					\
+	        croak("recursion detected in %s", name) ;	\
+	    db->filtering = TRUE ;				\
+	    save_defsv = newSVsv(DEFSV) ;			\
+	    sv_setsv(DEFSV, arg) ;				\
+	    PUSHMARK(sp) ;					\
+	    (void) perl_call_sv(db->type, G_DISCARD|G_NOARGS); 	\
+	    sv_setsv(arg, DEFSV) ;				\
+	    sv_setsv(DEFSV, save_defsv) ;			\
+	    SvREFCNT_dec(save_defsv) ;				\
+	    db->filtering = FALSE ;				\
+	    /*printf("end of filtering %s\n", name) ;*/		\
+	}
+
+
+MODULE = NDBM_File	PACKAGE = NDBM_File	PREFIX = ndbm_
 
 NDBM_File
-dbm_TIEHASH(dbtype, filename, flags, mode)
+ndbm_TIEHASH(dbtype, filename, flags, mode)
 	char *		dbtype
 	char *		filename
 	int		flags
 	int		mode
+	CODE:
+	{
+	    DBM * 	dbp ;
+
+	    RETVAL = NULL ;
+	    if (dbp =  dbm_open(filename, flags, mode)) {
+	        RETVAL = (NDBM_File)safemalloc(sizeof(NDBM_File_type)) ;
+    	        Zero(RETVAL, 1, NDBM_File_type) ;
+		RETVAL->dbp = dbp ;
+	    }
+	    
+	}
+	OUTPUT:
+	  RETVAL
 
 void
-dbm_DESTROY(db)
+ndbm_DESTROY(db)
 	NDBM_File	db
 	CODE:
-	dbm_close(db);
+	dbm_close(db->dbp);
+	safefree(db);
 
-datum
-dbm_FETCH(db, key)
+#define ndbm_FETCH(db,key)			dbm_fetch(db->dbp,key)
+datum_value
+ndbm_FETCH(db, key)
 	NDBM_File	db
-	datum		key
+	datum_key	key
 
+#define ndbm_STORE(db,key,value,flags)		dbm_store(db->dbp,key,value,flags)
 int
-dbm_STORE(db, key, value, flags = DBM_REPLACE)
+ndbm_STORE(db, key, value, flags = DBM_REPLACE)
 	NDBM_File	db
-	datum		key
-	datum		value
+	datum_key	key
+	datum_value	value
 	int		flags
     CLEANUP:
 	if (RETVAL) {
@@ -43,28 +84,85 @@ dbm_STORE(db, key, value, flags = DBM_REPLACE)
 		croak("No write permission to ndbm file");
 	    croak("ndbm store returned %d, errno %d, key \"%s\"",
 			RETVAL,errno,key.dptr);
-	    dbm_clearerr(db);
+	    dbm_clearerr(db->dbp);
 	}
 
+#define ndbm_DELETE(db,key)			dbm_delete(db->dbp,key)
 int
-dbm_DELETE(db, key)
+ndbm_DELETE(db, key)
 	NDBM_File	db
-	datum		key
+	datum_key	key
 
-datum
-dbm_FIRSTKEY(db)
+#define ndbm_FIRSTKEY(db)			dbm_firstkey(db->dbp)
+datum_key
+ndbm_FIRSTKEY(db)
 	NDBM_File	db
 
-datum
-dbm_NEXTKEY(db, key)
+#define ndbm_NEXTKEY(db,key)			dbm_nextkey(db->dbp)
+datum_key
+ndbm_NEXTKEY(db, key)
 	NDBM_File	db
-	datum		key
+	datum_key	key
 
+#define ndbm_error(db)				dbm_error(db->dbp)
 int
-dbm_error(db)
+ndbm_error(db)
 	NDBM_File	db
 
+#define ndbm_clearerr(db)			dbm_clearerr(db->dbp)
 void
-dbm_clearerr(db)
+ndbm_clearerr(db)
+	NDBM_File	db
+
+
+#define setFilter(type)					\
+	{						\
+	    if (db->type)				\
+	        RETVAL = sv_mortalcopy(db->type) ; 	\
+	    ST(0) = RETVAL ;				\
+	    if (db->type && (code == &PL_sv_undef)) {	\
+                SvREFCNT_dec(db->type) ;		\
+	        db->type = NULL ;			\
+	    }						\
+	    else if (code) {				\
+	        if (db->type)				\
+	            sv_setsv(db->type, code) ;		\
+	        else					\
+	            db->type = newSVsv(code) ;		\
+	    }	    					\
+	}
+
+
+
+SV *
+filter_fetch_key(db, code)
+	NDBM_File	db
+	SV *		code
+	SV *		RETVAL = &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_fetch_key) ;
+
+SV *
+filter_store_key(db, code)
+	NDBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_store_key) ;
+
+SV *
+filter_fetch_value(db, code)
+	NDBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_fetch_value) ;
+
+SV *
+filter_store_value(db, code)
 	NDBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_store_value) ;