GDB support for Android in devtools' debugger.

mojo/devtools/common/android_gdb/remote_file_connection.py

Index: mojo/devtools/common/android_gdb/remote_file_connection.py
diff --git a/mojo/devtools/common/android_gdb/remote_file_connection.py b/mojo/devtools/common/android_gdb/remote_file_connection.py
new file mode 100644
index 0000000000000000000000000000000000000000..1e8a9a93e6902549b4f2f15e10df4798a5889aa9
--- /dev/null
+++ b/mojo/devtools/common/android_gdb/remote_file_connection.py
@@ -0,0 +1,66 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os.path

[ppi, 2015/06/24 15:14:07]

This seems not to be used.

[etiennej, 2015/06/29 15:41:42]

Done.

+import socket
+import struct
+
+
+class RemoteFileConnectionException(Exception):
+  def __init__(self, *args, **kwargs):
+    Exception.__init__(self, *args, **kwargs)
+

[ppi, 2015/06/24 15:14:07]

Two blank lines please.

[etiennej, 2015/06/29 15:41:42]

Done.

+class RemoteFileConnection(object):
+  """Client for remote_file_reader server, allowing to read files on an
+  remote device."""

[ppi, 2015/06/24 15:14:07]

The closing triple quote should be on the next line (unless all of the pydoc
fits on one line).

[etiennej, 2015/06/29 15:41:42]

Done.

+  def __init__(self, host, port):
+    self.host = host
+    self.port = port
+    self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    self._size_struct = struct.Struct("!i")
+
+  def connect(self):
+    self.socket.connect((self.host, self.port))
+
+  def close(self):
+    self.socket.close()
+
+  def open(self, filename):
+    self._send("O %s\n" % filename)
+    result = self._receive(1)
+    if result != 'O':
+      raise RemoteFileConnectionException("Unable to open file " + filename)
+
+  def seek(self, pos, mode = 0):

[ppi, 2015/06/24 15:14:07]

Remove spaces around "=".

[etiennej, 2015/06/29 15:41:42]

Done.

+    self._send("S %d %d\n" % (pos, mode))
+    result = self._receive(1)
+    if result != 'O':
+      raise RemoteFileConnectionException("Unable to open file.")
+
+  def read(self, size=0):
+    assert size > 0
+    self._send("R %d\n" % size)
+    result = self._receive(1)
+    if result != 'O':
+      raise RemoteFileConnectionException("Unable to open file.")
+    read_size = self._size_struct.unpack(self._receive(4))[0]
+    return self._receive(read_size)
+
+  def _send(self, data):
+    while len(data) > 0:
+      sent = self.socket.send(data)
+      if sent == 0:
+        raise RemoteFileConnectionException("socket connection broken")
+      data = data[sent:]
+
+  def _receive(self, length):
+    result = []
+    while length > 0:
+      chunk = self.socket.recv(length)
+      if chunk == '':
+        raise RemoteFileConnectionException("socket connection broken")
+      result.append(chunk)
+      length -= len(chunk)
+    return ''.join(result)
+

[ppi, 2015/06/24 15:14:07]

Remove the blank line.

[etiennej, 2015/06/29 15:41:42]

Done.