X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=ext%2FODBM_File%2FODBM_File.xs;h=3bc94fe073060eb36f96bee910f04f8295061b4e;hb=65575be5af9681bf691b8b72b0e5b7f432a867bf;hp=53d1930c54e218d57ad25fca5ee5321055234caa;hpb=e5c9fcd0420f2862565625a4bd5596204107f54f;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/ext/ODBM_File/ODBM_File.xs b/ext/ODBM_File/ODBM_File.xs
index 53d1930..3bc94fe 100644
--- a/ext/ODBM_File/ODBM_File.xs
+++ b/ext/ODBM_File/ODBM_File.xs
@@ -2,10 +2,12 @@
 #include "perl.h"
 #include "XSUB.h"
 
-#ifdef NULL
-#undef NULL  /* XXX Why? */
-#endif
 #ifdef I_DBM
+/* If using the DB3 emulation, ENTER is defined both
+ * by DB3 and Perl.  We drop the Perl definition now.
+ * See also INSTALL section on DB3.
+ * -- Stanislav Brabec <utx@penguin.cz> */
+#  undef ENTER
 #  include <dbm.h>
 #else
 #  ifdef I_RPCSVC_DBM
@@ -13,6 +15,16 @@
 #  endif
 #endif
 
+#ifndef HAS_DBMINIT_PROTO
+int	dbminit(char* filename);
+int	dbmclose(void);
+datum	fetch(datum key);
+int	store(datum key, datum dat);
+int	delete(datum key);
+datum	firstkey(void);
+datum	nextkey(datum key);
+#endif
+
 #ifdef DBM_BUG_DUPLICATE_FREE 
 /*
  * DBM on at least Ultrix and HPUX call dbmclose() from dbminit(),
@@ -30,7 +42,38 @@
 
 #include <fcntl.h>
 
-typedef void* ODBM_File;
+typedef struct {
+	void * 	dbp ;
+	SV *    filter_fetch_key ;
+	SV *    filter_store_key ;
+	SV *    filter_fetch_value ;
+	SV *    filter_store_value ;
+	int     filtering ;
+	} ODBM_File_type;
+
+typedef ODBM_File_type * ODBM_File ;
+typedef datum datum_key ;
+typedef datum datum_key_copy ;
+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) ;*/		\
+	}
+
 
 #define odbm_FETCH(db,key)			fetch(key)
 #define odbm_STORE(db,key,value,flags)		store(key,value)
@@ -38,7 +81,15 @@ typedef void* ODBM_File;
 #define odbm_FIRSTKEY(db)			firstkey()
 #define odbm_NEXTKEY(db,key)			nextkey(key)
 
-static int dbmrefcnt;
+#define MY_CXT_KEY "ODBM_File::_guts" XS_VERSION
+
+typedef struct {
+    int		x_dbmrefcnt;
+} my_cxt_t;
+
+START_MY_CXT
+
+#define dbmrefcnt	(MY_CXT.x_dbmrefcnt)
 
 #ifndef DBM_REPLACE
 #define DBM_REPLACE 0
@@ -46,9 +97,10 @@ static int dbmrefcnt;
 
 MODULE = ODBM_File	PACKAGE = ODBM_File	PREFIX = odbm_
 
-#ifndef NULL
-#  define NULL 0
-#endif
+BOOT:
+{
+    MY_CXT_INIT;
+}
 
 ODBM_File
 odbm_TIEHASH(dbtype, filename, flags, mode)
@@ -59,12 +111,15 @@ odbm_TIEHASH(dbtype, filename, flags, mode)
 	CODE:
 	{
 	    char *tmpbuf;
+	    void * dbp ;
+	    dMY_CXT;
+
 	    if (dbmrefcnt++)
 		croak("Old dbm can only open one database");
 	    New(0, tmpbuf, strlen(filename) + 5, char);
 	    SAVEFREEPV(tmpbuf);
 	    sprintf(tmpbuf,"%s.dir",filename);
-	    if (stat(tmpbuf, &statbuf) < 0) {
+	    if (stat(tmpbuf, &PL_statbuf) < 0) {
 		if (flags & O_CREAT) {
 		    if (mode < 0 || close(creat(tmpbuf,mode)) < 0)
 			croak("ODBM_File: Can't create %s", filename);
@@ -75,28 +130,34 @@ odbm_TIEHASH(dbtype, filename, flags, mode)
 		else
 		    croak("ODBM_FILE: Can't open %s", filename);
 	    }
-	    RETVAL = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
-	    ST(0) = sv_mortalcopy(&sv_undef);
+	    dbp = (void*)(dbminit(filename) >= 0 ? &dbmrefcnt : 0);
+	    RETVAL = (ODBM_File)safemalloc(sizeof(ODBM_File_type)) ;
+    	    Zero(RETVAL, 1, ODBM_File_type) ;
+	    RETVAL->dbp = dbp ;
+	    ST(0) = sv_mortalcopy(&PL_sv_undef);
 	    sv_setptrobj(ST(0), RETVAL, dbtype);
 	}
 
 void
 DESTROY(db)
 	ODBM_File	db
+	PREINIT:
+	dMY_CXT;
 	CODE:
 	dbmrefcnt--;
 	dbmclose();
+	safefree(db);
 
-datum
+datum_value
 odbm_FETCH(db, key)
 	ODBM_File	db
-	datum		key
+	datum_key_copy	key
 
 int
 odbm_STORE(db, key, value, flags = DBM_REPLACE)
 	ODBM_File	db
-	datum		key
-	datum		value
+	datum_key	key
+	datum_value	value
 	int		flags
     CLEANUP:
 	if (RETVAL) {
@@ -109,14 +170,66 @@ odbm_STORE(db, key, value, flags = DBM_REPLACE)
 int
 odbm_DELETE(db, key)
 	ODBM_File	db
-	datum		key
+	datum_key	key
 
-datum
+datum_key
 odbm_FIRSTKEY(db)
 	ODBM_File	db
 
-datum
+datum_key
 odbm_NEXTKEY(db, key)
 	ODBM_File	db
-	datum		key
+	datum_key	key
+
+
+#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 = Nullsv ;			\
+	    }						\
+	    else if (code) {				\
+	        if (db->type)				\
+	            sv_setsv(db->type, code) ;		\
+	        else					\
+	            db->type = newSVsv(code) ;		\
+	    }	    					\
+	}
+
+
+
+SV *
+filter_fetch_key(db, code)
+	ODBM_File	db
+	SV *		code
+	SV *		RETVAL = &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_fetch_key) ;
+
+SV *
+filter_store_key(db, code)
+	ODBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_store_key) ;
+
+SV *
+filter_fetch_value(db, code)
+	ODBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_fetch_value) ;
+
+SV *
+filter_store_value(db, code)
+	ODBM_File	db
+	SV *		code
+	SV *		RETVAL =  &PL_sv_undef ;
+	CODE:
+	    setFilter(filter_store_value) ;