serial: let port subclasses handle their own debug logging

We want to print out QCDM messages as hex, not ASCII.  So let
each port type print out it's own communication as it wants to.

1 files changed, 32 insertions, 0 deletions

diff --git a/src/mm-at-serial-port.c b/src/mm-at-serial-port.c
index 60a75d91..1a518f59 100644
--- a/src/mm-at-serial-port.c
+++ b/src/mm-at-serial-port.c
@@ -268,6 +268,37 @@ mm_at_serial_port_queue_command_cached (MMAtSerialPort *self,
                                          user_data);
 }
 
+static void
+debug_log (MMSerialPort *port, const char *prefix, const char *buf, gsize len)
+{
+    static GString *debug = NULL;
+    const char *s;
+
+    if (!debug)
+        debug = g_string_sized_new (256);
+
+    g_string_append (debug, prefix);
+    g_string_append (debug, " '");
+
+    s = buf;
+    while (len--) {
+        if (g_ascii_isprint (*s))
+            g_string_append_c (debug, *s);
+        else if (*s == '\r')
+            g_string_append (debug, "<CR>");
+        else if (*s == '\n')
+            g_string_append (debug, "<LF>");
+        else
+            g_string_append_printf (debug, "\\%d", *s);
+
+        s++;
+    }
+
+    g_string_append_c (debug, '\'');
+    g_debug ("(%s): %s", mm_port_get_device (MM_PORT (port)), debug->str);
+    g_string_truncate (debug, 0);
+}
+
 /*****************************************************************************/
 
 MMAtSerialPort *
@@ -323,4 +354,5 @@ mm_at_serial_port_class_init (MMAtSerialPortClass *klass)
     port_class->parse_unsolicited = parse_unsolicited;
     port_class->parse_response = parse_response;
     port_class->handle_response = handle_response;
+    port_class->debug_log = debug_log;
 }