Add support for Symbol quality and points

Author: GregMefford

lib/symbol.ex

@@ -1,11 +1,37 @@
 defmodule Zbar.Symbol do
-  defstruct [:type, :data]
+  alias __MODULE__
+
+  defstruct [:type, :quality, :points, :data]
 
   def parse(string) do
-    [type, data] = String.split(string, ": ", parts: 2)
-    %Zbar.Symbol{
-      type: type,
-      data: Base.decode64!(data),
-    }
+    string
+    |> String.split(" ")
+    |> Enum.reduce(%Symbol{}, fn item, acc ->
+      [key, value] = String.split(item, ":", parts: 2)
+      case key do
+        "type" ->
+          %Symbol{acc | type: value}
+
+        "quality" ->
+          %Symbol{acc | quality: String.to_integer(value)}
+
+        "points" ->
+          %Symbol{acc | points: parse_points(value)}
+
+          "data" ->
+            %Symbol{acc | data: Base.decode64!(value)}
+      end
+    end)
+  end
+
+  defp parse_points(string) do
+    string
+    |> String.split(";")
+    |> Enum.map(& parse_point/1)
+  end
+
+  defp parse_point(string) do
+    [x, y] = String.split(string, ",", parts: 2)
+    {String.to_integer(x), String.to_integer(y)}
   end
 end

lib/zbar.ex

@@ -48,7 +48,6 @@ defmodule Zbar do
   defp collect_output(port, timeout, buffer \\ "") do
     receive do
       {^port, {:data, data}} ->
-        IO.inspect(Base.encode64(to_string(data)), label: "  <Received")
         collect_output(port, timeout, buffer <> to_string(data))
       {^port, {:exit_status, 0}} ->
         {:ok, buffer}

src/zbar_scanner.c

@@ -82,13 +82,26 @@ int main (int argc, char **argv)
 
   const zbar_symbol_t *symbol = zbar_image_first_symbol(image);
   for(; symbol; symbol = zbar_symbol_next(symbol)) {
-      zbar_symbol_type_t typ = zbar_symbol_get_type(symbol);
-      unsigned int length = zbar_symbol_get_data_length(symbol);
-      const char *data = zbar_symbol_get_data(symbol);
-      int base64_length;
-      char * base64_data = base64(data, length, &base64_length);
-      printf("%s: %s\n", zbar_get_symbol_name(typ), base64_data);
-      free(base64_data);
+    printf(
+      "type:%s quality:%i points:",
+      zbar_get_symbol_name(zbar_symbol_get_type(symbol)),
+      zbar_symbol_get_quality(symbol)
+    );
+    unsigned int point_count = zbar_symbol_get_loc_size(symbol);
+    for(int i = 0; i < point_count; i++) {
+      printf(
+        "%i,%i",
+        zbar_symbol_get_loc_x(symbol, i),
+        zbar_symbol_get_loc_y(symbol, i)
+      );
+      if (i+1 < point_count) printf(";");
+    }
+    const char *data = zbar_symbol_get_data(symbol);
+    unsigned int data_length = zbar_symbol_get_data_length(symbol);
+    int base64_length;
+    char * base64_data = base64(data, data_length, &base64_length);
+    printf(" data:%s\n", base64_data);
+    free(base64_data);
   }
 
   zbar_image_destroy(image);