Make core:image packages work on js platform (wasm32) by not requiring core:os

core/image/general_os.odin

@@ -0,0 +1,38 @@
+//+build !js
+package image
+
+import "core:os"
+
+load :: proc{
+	load_from_bytes,
+	load_from_file,
+}
+
+
+load_from_file :: proc(filename: string, options := Options{}, allocator := context.allocator) -> (img: ^Image, err: Error) {
+	data, ok := os.read_entire_file(filename, allocator)
+	defer delete(data, allocator)
+	if ok {
+		return load_from_bytes(data, options, allocator)
+	} else {
+		return nil, .Unable_To_Read_File
+	}
+}
+
+
+which :: proc{
+	which_bytes,
+	which_file,
+}
+
+which_file :: proc(path: string) -> Which_File_Type {
+	f, err := os.open(path)
+	if err != 0 {
+		return .Unknown
+	}
+	header: [128]byte
+	os.read(f, header[:])
+	file_type := which_bytes(header[:])
+	os.close(f)
+	return file_type
+}