added telegram lib from repo leandrotoledo/python-telegram-bot

lib/telegram/utils/request.py

@@ -0,0 +1,117 @@
+#!/usr/bin/env python
+# pylint: disable=no-name-in-module,unused-import
+#
+# A library that provides a Python interface to the Telegram Bot API
+# Copyright (C) 2015 Leandro Toledo de Souza <leandrotoeldodesouza@gmail.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser Public License for more details.
+#
+# You should have received a copy of the GNU Lesser Public License
+# along with this program.  If not, see [http://www.gnu.org/licenses/].
+
+"""This module contains methods to make POST and GET requests"""
+
+import json
+
+try:
+    from urllib.parse import urlencode
+    from urllib.request import urlopen, urlretrieve, Request
+    from urllib.error import HTTPError, URLError
+except ImportError:
+    from urllib import urlencode, urlretrieve
+    from urllib2 import urlopen, Request
+    from urllib2 import HTTPError, URLError
+
+from telegram import (InputFile, TelegramError)
+
+
+def _parse(json_data):
+    """Try and parse the JSON returned from Telegram and return an empty
+    dictionary if there is any error.
+
+    Args:
+      url:
+        urllib.urlopen object
+
+    Returns:
+      A JSON parsed as Python dict with results.
+    """
+    data = json.loads(json_data.decode())
+
+    if not data.get('ok') and data.get('description'):
+        return data['description']
+
+    return data['result']
+
+
+def get(url):
+    """Request an URL.
+    Args:
+      url:
+        The web location we want to retrieve.
+
+    Returns:
+      A JSON object.
+    """
+    result = urlopen(url).read()
+
+    return _parse(result)
+
+
+def post(url,
+         data):
+    """Request an URL.
+    Args:
+      url:
+        The web location we want to retrieve.
+      data:
+        A dict of (str, unicode) key/value pairs.
+
+    Returns:
+      A JSON object.
+    """
+    try:
+        if InputFile.is_inputfile(data):
+            data = InputFile(data)
+            request = Request(url,
+                              data=data.to_form(),
+                              headers=data.headers)
+        else:
+            data = json.dumps(data)
+            request = Request(url,
+                              data=data.encode(),
+                              headers={'Content-Type': 'application/json'})
+
+        result = urlopen(request).read()
+    except HTTPError as error:
+        if error.getcode() == 403:
+            raise TelegramError('Unauthorized')
+        if error.getcode() == 502:
+            raise TelegramError('Bad Gateway')
+
+        message = _parse(error.read())
+        raise TelegramError(message)
+
+    return _parse(result)
+
+
+def download(url,
+             filename):
+    """Download a file by its URL.
+    Args:
+      url:
+        The web location we want to retrieve.
+
+      filename:
+        The filename wihtin the path to download the file.
+    """
+
+    urlretrieve(url, filename)