===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/file.c,v
retrieving revision 1.20
retrieving revision 1.24
diff -u -p -r1.20 -r1.24
--- OpenXM_contrib2/asir2000/builtin/file.c	2004/04/26 05:28:40	1.20
+++ OpenXM_contrib2/asir2000/builtin/file.c	2006/11/08 07:34:33	1.24
@@ -45,7 +45,7 @@
  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
  *
- * $OpenXM: OpenXM_contrib2/asir2000/builtin/file.c,v 1.19 2003/11/12 07:48:50 noro Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/builtin/file.c,v 1.23 2006/09/13 02:26:13 noro Exp $ 
 */
 #include "ca.h"
 #include "parse.h"
@@ -76,8 +76,9 @@ void Pbsave(), Pbload(), Pbload27();
 void Pbsave_compat(), Pbload_compat();
 void Pbsave_cmo(), Pbload_cmo();
 void Popen_file(), Pclose_file(), Pget_line(), Pget_byte(), Pput_byte();
+void Pput_word(), Pget_word();
 void Ppurge_stdin();
-void Pexec();
+void Pimport();
 
 extern int des_encryption;
 extern char *asir_libdir;
@@ -88,11 +89,13 @@ struct ftab file_tab[] = {
 	{"close_file",Pclose_file,1},
 	{"get_byte",Pget_byte,1},
 	{"put_byte",Pput_byte,2},
+	{"get_word",Pget_word,1},
+	{"put_word",Pput_word,2},
 	{"get_line",Pget_line,-1},
 	{"remove_file",Premove_file,1},
 	{"access",Paccess,1},
 	{"load",Pload,-1},
-	{"exec",Pexec,1},
+	{"import",Pimport,-1},
 	{"which",Pwhich,1},
 	{"loadfiles",Ploadfiles,1},
 	{"output",Poutput,-1},
@@ -235,6 +238,24 @@ void Pget_byte(NODE arg,Q *rp)
 		error("get_byte : invalid argument");
 }
 
+void Pget_word(NODE arg,Q *rp)
+{
+	int i,c;
+	FILE *fp;
+
+	asir_assert(ARG0(arg),O_N,"get_word");
+	i = QTOS((Q)ARG0(arg));
+	if ( fp = file_ptrs[i] ) {
+		if ( feof(fp) ) {
+			error("get_word : end of file");
+			return;
+		}
+		read_int(fp,&c);
+		STOQ(c,*rp);
+	} else
+		error("get_word : invalid argument");
+}
+
 void Pput_byte(NODE arg,Obj *rp)
 {
 	int i,j,c;
@@ -261,12 +282,31 @@ void Pput_byte(NODE arg,Obj *rp)
 	*rp = obj;
 }
 
+void Pput_word(NODE arg,Obj *rp)
+{
+	int i,c;
+	FILE *fp;
+	Obj obj;
+
+	asir_assert(ARG0(arg),O_N,"put_word");
+	asir_assert(ARG1(arg),O_N,"put_word");
+	i = QTOS((Q)ARG0(arg));
+	if ( !(fp = file_ptrs[i]) )
+		error("put_word : invalid argument");
+
+	obj = (Q)ARG1(arg);
+	c = QTOS((Q)obj);
+	write_int(fp,&c);
+	*rp = obj;
+}
+
 void Pload(NODE arg,Q *rp)
 {
 	int ret = 0;
 	char *name,*name0;
 	char errbuf[BUFSIZ];
 
+	if ( !arg ) error("load : invalid argument");
 	if ( ARG0(arg) ) {
 		switch (OID(ARG0(arg))) {
 			case O_STR:
@@ -276,11 +316,7 @@ void Pload(NODE arg,Q *rp)
 					sprintf(errbuf,"load : \"%s\" not found in the search path",name0);
 					error(errbuf);
 				}
-				ret = loadfile(name);
-				if ( !ret ) {
-					sprintf(errbuf,"load : \"%s\" could not be loaded",name);
-					error(errbuf);
-				}
+				execasirfile(name);
 				break;
 			default:
 				error("load : invalid argument");
@@ -290,20 +326,31 @@ void Pload(NODE arg,Q *rp)
 	STOQ(ret,*rp);
 }
 
-void Pexec(NODE arg,Q *rp)
+NODE imported_files;
+
+void Pimport(NODE arg,Q *rp)
 {
-	int ret;
-	char *name0,*name;
+	char *name;
+	NODE t,p,opt;
 
-	name0 = BDY((STRING)ARG0(arg));
-	searchasirpath(name0,&name);
-	if ( !name )
-		ret = -1;
-	else {
-		execasirfile(name);
-		ret = 0;
+	name = BDY((STRING)ARG0(arg));
+	for ( t = imported_files; t; t = NEXT(t) )
+		if ( !strcmp((char *)BDY(t),name) ) break;
+	if ( !t ) {
+		Pload(arg,rp);
+		MKNODE(t,name,imported_files); 
+		imported_files = t;
+		return;
+	} else if ( current_option ) {
+		for ( opt = current_option; opt; opt = NEXT(opt) ) {
+			p = BDY((LIST)BDY(opt));
+			if ( !strcmp(BDY((STRING)BDY(p)),"reimport") && BDY(NEXT(p)) ) {
+				Pload(arg,rp);
+				return;
+			}
+		}
 	}
-	STOQ(ret,*rp);
+	*rp = 0;
 }
 
 void Pwhich(NODE arg,STRING *rp)