implemented and tested PrintField
diff --git a/aos/build/queues/print_field.rb b/aos/build/queues/print_field.rb
new file mode 100644
index 0000000..8e9521e
--- /dev/null
+++ b/aos/build/queues/print_field.rb
@@ -0,0 +1,54 @@
+require File.dirname(__FILE__) + '/load.rb'
+
+TypeNames = [8, 16, 32, 64].collect do |size|
+ ["uint#{size}_t", "int#{size}_t"]
+end.flatten + ['bool', 'float', 'char', 'double']
+
+File.open(ARGV[0], 'w') do |output|
+ output.puts <<END
+// This file is generated by #{File.expand_path(__FILE__)}.
+// DO NOT EDIT BY HAND!
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdio.h>
+
+#include "aos/common/byteorder.h"
+
+namespace aos {
+
+bool PrintField(char *output, size_t *output_bytes, void *input,
+ size_t *input_bytes, uint32_t type) {
+ switch (type) {
+#{TypeNames.collect do |name|
+ message_element = Target::MessageElement.new(name, 'value')
+ statement = MessageElementStmt.new(name, 'value')
+ message_element.size = statement.size
+ print_args = []
+ message_element.fetchPrintArgs(print_args)
+ next <<END2
+ case #{message_element.getTypeID()}:
+ {
+ if (*input_bytes < #{statement.size}) return false;
+ *input_bytes -= #{statement.size};
+ #{name} value;
+ to_host(static_cast<const char *>(input), &value);
+ int ret = snprintf(output, *output_bytes,
+ "#{statement.toPrintFormat()}",
+ #{print_args[0]});
+ if (ret < 0) return false;
+ if (static_cast<unsigned int>(ret) >= *output_bytes) return false;
+ *output_bytes -= ret + 1;
+ return true;
+ }
+END2
+end.join('')}
+ default:
+ return false;
+ }
+}
+
+} // namespace aos
+END
+end