From c80a9da01a58d268fad6c32b3a4ad21fcc21d762 Mon Sep 17 00:00:00 2001 From: Nick Rosbrook Date: Mon, 16 Dec 2019 18:08:02 +0000 Subject: [PATCH] golang/xenlight: define StringList builtin type Define StringList as []string an implement fromC and toC functions. Signed-off-by: Nick Rosbrook Reviewed-by: George Dunlap --- tools/golang/xenlight/xenlight.go | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/tools/golang/xenlight/xenlight.go b/tools/golang/xenlight/xenlight.go index 1c5e3c0cc7..72afc3cf14 100644 --- a/tools/golang/xenlight/xenlight.go +++ b/tools/golang/xenlight/xenlight.go @@ -212,6 +212,35 @@ type KeyValueList struct{} func (kvl KeyValueList) fromC(ckvl *C.libxl_key_value_list) error { return nil } func (kvl KeyValueList) toC() (ckvl C.libxl_key_value_list, err error) { return } +// StringList represents a libxl_string_list. +type StringList []string + +func (sl *StringList) fromC(csl *C.libxl_string_list) error { + size := int(C.libxl_string_list_length(csl)) + list := (*[1 << 30]*C.char)(unsafe.Pointer(csl))[:size:size] + + *sl = make([]string, size) + + for i, v := range list { + (*sl)[i] = C.GoString(v) + } + + return nil +} + +func (sl StringList) toC() (C.libxl_string_list, error) { + var char *C.char + size := len(sl) + csl := (C.libxl_string_list)(C.malloc(C.ulong(size) * C.ulong(unsafe.Sizeof(char)))) + clist := (*[1 << 30]*C.char)(unsafe.Pointer(csl))[:size:size] + + for i, v := range sl { + clist[i] = C.CString(v) + } + + return csl, nil +} + // Bitmap represents a libxl_bitmap. // // Implement the Go bitmap type such that the underlying data can -- 2.30.2