caching modules: almost there

vlib/os2/os2_mac.v

@@ -0,0 +1,32 @@
+module os2
+
+#include <fcntl.h>
+
+struct File {
+	fd int
+}	
+
+fn C.open(byteptr, int, int) int
+fn C.write(voidptr, byteptr, int) int
+
+pub fn create(path string) ?File {
+	fd := C.creat(path.str, 0644)//511)
+	if fd == -1 {
+		return error('failed to create "$path":')
+		//os.print_c_errno()
+	}
+	return File{fd}
+}	
+
+pub fn (f File) writeln(s string) {
+	ss := s + '\n'
+	ret := C.write(f.fd, ss.str, s.len + 1)
+	if ret == -1 {
+		C.perror('failed to write')
+	}
+}
+
+pub fn (f File) close() {
+	C.close(f.fd)
+}
+

vlib/os2/os2_test.v

@@ -0,0 +1,9 @@
+import os2
+
+fn test_open() {
+	$if mac {
+		f := os2.create('os2.test')
+		f.writeln('hello world!')
+		f.close()
+	}
+}