// BindHeader attaches the header to a libsass context ensuring
// gc does not delete the pointers necessary to make this happen.
func BindHeader(opts SassOptions, entries []ImportEntry) *string {
idx := globalHeaders.set(entries)
ptr := unsafe.Pointer(idx)
imper := C.sass_make_importer(
C.Sass_Importer_Fn(C.SassHeaders),
C.double(0),
ptr,
)
impers := C.sass_make_importer_list(1)
C.sass_importer_set_list_entry(impers, 0, imper)
C.sass_option_set_c_headers(
(*C.struct_Sass_Options)(unsafe.Pointer(opts)),
impers)
return idx
}
func (ctx *Context) SetHeaders(opts *C.struct_Sass_Options) {
// Push the headers into the local array
for _, gh := range globalHeaders {
ctx.Headers.Add(gh)
}
cheads := C.sass_make_importer_list(1)
hdr := reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(cheads)),
Len: 1, Cap: 1,
}
goheads := *(*[]C.Sass_Importer_Entry)(unsafe.Pointer(&hdr))
imper := C.sass_make_importer(
C.Sass_Importer_Fn(C.SassHeaders),
C.double(0),
unsafe.Pointer(ctx))
goheads[0] = imper
C.sass_option_set_c_headers(opts, cheads)
}
// SassOptionSetCHeaders adds custom C headers to a SassOptions
func SassOptionSetCHeaders(gofc SassOptions, goimp SassImporterList) {
C.sass_option_set_c_headers(gofc, goimp)
}