From 720d4ae010c7b2dac83ac61b96a9bf7e6f02f440 Mon Sep 17 00:00:00 2001
From: Vladimir Chtchetkine <vchtchetkine@google.com>
Date: Wed, 25 Jan 2012 12:55:06 -0800
Subject: Expand the ways how a query can be sent to Android device.

Contains new routines that allow sending multiple blocks of data within a single
query. Also, these routines allow to avoid restriction on queries as zero-terminated
strings.

Change-Id: Ia5789a01a7eadbae5b1f5014a67864eea463af43
---
 android/android-device.c | 29 +++++++++++++++++++++++++++++
 android/android-device.h | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)

(limited to 'android')

diff --git a/android/android-device.c b/android/android-device.c
index 5722a7e..f5121e8 100644
--- a/android/android-device.c
+++ b/android/android-device.c
@@ -1271,6 +1271,35 @@ android_device_query(AndroidDevice* ad,
 }
 
 int
+android_device_start_query(AndroidDevice* ad, const char* query, int to)
+{
+    int res;
+
+    /* Setup deadline for the query. */
+    _ads_set_deadline(&ad->query_socket.dev_socket, to);
+
+    /* Send the query header. */
+    res = _android_dev_socket_send(&ad->query_socket.dev_socket, query,
+                                   strlen(query) + 1);
+    return (res > 0) ? 0 : -1;
+}
+
+int
+android_device_send_query_data(AndroidDevice* ad, const void* data, int size)
+{
+    return _android_dev_socket_send(&ad->query_socket.dev_socket, data, size);
+}
+
+int
+android_device_complete_query(AndroidDevice* ad, char* buff, size_t buffsize)
+{
+    /* Receive the response to the query. */
+    const int res = _android_dev_socket_read_response(&ad->query_socket.dev_socket,
+                                                      buff, buffsize);
+    return (res >= 0) ? 0 : -1;
+}
+
+int
 android_device_listen(AndroidDevice* ad,
                       char* buff,
                       int buffsize,
diff --git a/android/android-device.h b/android/android-device.h
index 9fde906..769ba66 100644
--- a/android/android-device.h
+++ b/android/android-device.h
@@ -222,6 +222,47 @@ extern int android_device_query(AndroidDevice* ad,
                                 size_t buffsize,
                                 int to);
 
+/* Starts a query that may require more than one buffer transfer.
+ * This routine allows to initiate a query that may require more than one call to
+ * send_data, or may have a format that differs from the usual (a zero-terminated
+ * string). For instance, sending a BLOB data should use this routine to start a
+ * a query, then use android_device_send_query_data to transfer the data, and
+ * then call android_device_complete_query to obtain the response.
+ * Param:
+ *  ad - Android device descriptor, returned from android_device_init API.
+ *  query - Zero-terminated query string.
+ *  to - Milliseconds to wait for the entire query to complete.
+ * Return:
+ *  Zero on success, or non-zero value on failure with 'errno' properly set:
+ *      - 0 Indicates that the server has failed the query.
+ *      - Anything else indicates an I/O error.
+ */
+extern int android_device_start_query(AndroidDevice* ad,
+                                      const char* query,
+                                      int to);
+
+/* Sends data block for a query started with android_device_start_query
+ * Param:
+ *  ad - Android device descriptor, returned from android_device_init API.
+ *  data, size - Data to transfer.
+ * Return:
+ *  Number of bytes transferred on success, or -1 on failure with errno
+ *  containing the reason for failure.
+ */
+extern int android_device_send_query_data(AndroidDevice* ad,
+                                          const void* data,
+                                          int size);
+
+/* Completes a query started with android_device_start_query, and receives the
+ * query response.
+ * Param:
+ *  ad - Android device descriptor, returned from android_device_init API.
+ *  buff, buffsize - Buffer where to receive the response to the query.
+ * Return:
+ *  Zero on success, or non-zero value on failure with 'errno' properly set.
+ */
+extern int android_device_complete_query(AndroidDevice* ad, char* buff, size_t buffsize);
+
 /* Start listening on the event channel.
  * Param:
  *  ad - Android device descriptor, returned from android_device_init API.
-- 
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