atutil: Break out attribute parser into atutil

drivers/atmodem/atutil.c

@@ -438,3 +438,46 @@ gboolean at_util_parse_cscs_query(GAtResult *result,
 
 	return FALSE;
 }
+
+static const char *at_util_fixup_return(const char *line, const char *prefix)
+{
+	if (g_str_has_prefix(line, prefix) == FALSE)
+		return line;
+
+	line += strlen(prefix);
+
+	while (line[0] == ' ')
+		line++;
+
+	return line;
+}
+
+gboolean at_util_parse_attr(GAtResult *result, const char *prefix,
+				const char **out_attr)
+{
+	int numlines = g_at_result_num_response_lines(result);
+	GAtResultIter iter;
+	const char *line;
+	int i;
+
+	if (numlines == 0)
+		return FALSE;
+
+	g_at_result_iter_init(&iter, result);
+
+	/*
+	 * We have to be careful here, sometimes a stray unsolicited
+	 * notification will appear as part of the response and we
+	 * cannot rely on having a prefix to recognize the actual
+	 * response line.  So use the last line only as the response
+	 */
+	for (i = 0; i < numlines; i++)
+		g_at_result_iter_next(&iter, NULL);
+
+	line = g_at_result_iter_raw_line(&iter);
+
+	if (out_attr)
+		*out_attr = at_util_fixup_return(line, prefix);
+
+	return TRUE;
+}

drivers/atmodem/atutil.h

@@ -71,6 +71,9 @@ gboolean at_util_parse_cscs_supported(GAtResult *result, int *supported);
 gboolean at_util_parse_cscs_query(GAtResult *result,
 				enum at_util_charset *charset);
 
+gboolean at_util_parse_attr(GAtResult *result, const char *prefix,
+				const char **out_attr);
+
 struct cb_data {
 	void *cb;
 	void *data;

drivers/atmodem/devinfo.c

@@ -35,29 +35,13 @@
 
 #include "atmodem.h"
 
-static const char *fixup_return(const char *line, const char *prefix)
-{
-	if (g_str_has_prefix(line, prefix) == FALSE)
-		return line;
-
-	line = line + strlen(prefix);
-
-	while (line[0] == ' ')
-		line++;
-
-	return line;
-}
-
 static void attr_cb(gboolean ok, GAtResult *result, gpointer user_data)
 {
 	struct cb_data *cbd = user_data;
 	ofono_devinfo_query_cb_t cb = cbd->cb;
 	const char *prefix = cbd->user;
 	struct ofono_error error;
-	int numlines = g_at_result_num_response_lines(result);
+	const char *attr;
-	GAtResultIter iter;
-	const char *line;
-	int i;
 
 	decode_at_error(&error, g_at_result_final_response(result));
 
@@ -66,24 +50,12 @@ static void attr_cb(gboolean ok, GAtResult *result, gpointer user_data)
 		return;
 	}
 
-	if (numlines == 0) {
+	if (at_util_parse_attr(result, prefix, &attr) == FALSE) {
 		CALLBACK_WITH_FAILURE(cb, NULL, cbd->data);
 		return;
 	}
 
-	g_at_result_iter_init(&iter, result);
+	cb(&error, attr, cbd->data);
-
-	/* We have to be careful here, sometimes a stray unsolicited
-	 * notification will appear as part of the response and we
-	 * cannot rely on having a prefix to recognize the actual
-	 * response line.  So use the last line only as the response
-	 */
-	for (i = 0; i < numlines; i++)
-		g_at_result_iter_next(&iter, NULL);
-
-	line = g_at_result_iter_raw_line(&iter);
-
-	cb(&error, fixup_return(line, prefix), cbd->data);
 }
 
 static void at_query_manufacturer(struct ofono_devinfo *info,
@@ -97,8 +69,7 @@ static void at_query_manufacturer(struct ofono_devinfo *info,
 
 	cbd->user = "+CGMI:";
 
-	if (g_at_chat_send(chat, "AT+CGMI", NULL,
+	if (g_at_chat_send(chat, "AT+CGMI", NULL, attr_cb, cbd, g_free) > 0)
-				attr_cb, cbd, g_free) > 0)
 		return;
 
 error:
@@ -118,8 +89,7 @@ static void at_query_model(struct ofono_devinfo *info,
 
 	cbd->user = "+CGMM:";
 
-	if (g_at_chat_send(chat, "AT+CGMM", NULL,
+	if (g_at_chat_send(chat, "AT+CGMM", NULL, attr_cb, cbd, g_free) > 0)
-				attr_cb, cbd, g_free) > 0)
 		return;
 
 error:
@@ -139,8 +109,7 @@ static void at_query_revision(struct ofono_devinfo *info,
 
 	cbd->user = "+CGMR:";
 
-	if (g_at_chat_send(chat, "AT+CGMR", NULL,
+	if (g_at_chat_send(chat, "AT+CGMR", NULL, attr_cb, cbd, g_free) > 0)
-				attr_cb, cbd, g_free) > 0)
 		return;
 
 error:
@@ -160,8 +129,7 @@ static void at_query_serial(struct ofono_devinfo *info,
 
 	cbd->user = "+CGSN:";
 
-	if (g_at_chat_send(chat, "AT+CGSN", NULL,
+	if (g_at_chat_send(chat, "AT+CGSN", NULL, attr_cb, cbd, g_free) > 0)
-				attr_cb, cbd, g_free) > 0)
 		return;
 
 error: