v4.0.10

HISTORY.rst

@@ -3,6 +3,59 @@ History
 -------
 
 
+4.0.10 (2015-07-31)
+++++++++++++++++++
+
+- downgrade requests library to v2.6.0
+
+
+4.0.9 (2015-07-29)
+++++++++++++++++++
+
+- catch exceptions from pygments.modeline.get_filetype_from_buffer
+
+
+4.0.8 (2015-06-23)
+++++++++++++++++++
+
+- fix offline logging
+- limit language detection to known file extensions, unless file contents has a vim modeline
+- upgrade wakatime cli to v4.0.16
+
+
+4.0.7 (2015-06-21)
+++++++++++++++++++
+
+- allow customizing status bar message in sublime-settings file
+- guess language using multiple methods, then use most accurate guess
+- use entity and type for new heartbeats api resource schema
+- correctly log message from py.warnings module
+- upgrade wakatime cli to v4.0.15
+
+
+4.0.6 (2015-05-16)
+++++++++++++++++++
+
+- fix bug with auto detecting project name
+- upgrade wakatime cli to v4.0.13
+
+
+4.0.5 (2015-05-15)
+++++++++++++++++++
+
+- correctly display caller and lineno in log file when debug is true
+- project passed with --project argument will always be used
+- new --alternate-project argument
+- upgrade wakatime cli to v4.0.12
+
+
+4.0.4 (2015-05-12)
+++++++++++++++++++
+
+- reuse SSL connection over multiple processes for improved performance
+- upgrade wakatime cli to v4.0.11
+
+
 4.0.3 (2015-05-06)
 ++++++++++++++++++
 

README.md

@@ -29,3 +29,15 @@ Screen Shots
 
 ![Project Overview](https://wakatime.com/static/img/ScreenShots/ScreenShot-2014-10-29.png)
 
+Troubleshooting
+---------------
+
+First, turn on debug mode in your `WakaTime.sublime-settings` file.
+
+![sublime user settings](https://wakatime.com/static/img/ScreenShots/sublime-wakatime-settings-menu.png)
+
+Add the line: `"debug": true`
+
+Then, open your Sublime Console with `View -> Show Console` to see the plugin executing the wakatime cli process when sending a heartbeat. Also, tail your `$HOME/.wakatime.log` file to debug wakatime cli problems.
+
+For more general troubleshooting information, see [wakatime/wakatime#troubleshooting](https://github.com/wakatime/wakatime#troubleshooting).

WakaTime.py

@@ -7,7 +7,7 @@ Website:     https://wakatime.com/
 ==========================================================="""
 
 
-__version__ = '4.0.3'
+__version__ = '4.0.10'
 
 
 import sublime
@@ -232,11 +232,11 @@ class SendHeartbeatThread(threading.Thread):
         if self.is_write:
             cmd.append('--write')
         if self.project and self.project.get('name'):
-            cmd.extend(['--project', self.project.get('name')])
+            cmd.extend(['--alternate-project', self.project.get('name')])
         elif self.folders:
             project_name = find_project_from_folders(self.folders, self.target_file)
             if project_name:
-                cmd.extend(['--project', project_name])
+                cmd.extend(['--alternate-project', project_name])
         if self.cursorpos is not None:
             cmd.extend(['--cursorpos', '{0}'.format(self.cursorpos)])
         for pattern in self.ignore:
@@ -262,7 +262,7 @@ class SendHeartbeatThread(threading.Thread):
 
     def set_status_bar(self):
         if SETTINGS.get('status_bar_message'):
-            self.view.set_status('wakatime', 'WakaTime active {0}'.format(datetime.now().strftime('%I:%M %p')))
+            self.view.set_status('wakatime', datetime.now().strftime(SETTINGS.get('status_bar_message_fmt')))
 
     def set_last_heartbeat(self):
         global LAST_HEARTBEAT

WakaTime.sublime-settings

@@ -16,5 +16,8 @@
     
     // Status bar message. Set to false to hide status bar message.
     // Defaults to true.
-    "status_bar_message": true
+    "status_bar_message": true,
+    
+    // Status bar message format.
+    "status_bar_message_fmt": "WakaTime active %I:%M %p"
 }

packages/wakatime/__about__.py

@@ -1,7 +1,7 @@
 __title__ = 'wakatime'
 __description__ = 'Common interface to the WakaTime api.'
 __url__ = 'https://github.com/wakatime/wakatime'
-__version_info__ = ('4', '0', '10')
+__version_info__ = ('4', '1', '0')
 __version__ = '.'.join(__version_info__)
 __author__ = 'Alan Hamlett'
 __author_email__ = 'alan@wakatime.com'

packages/wakatime/base.py

@@ -19,6 +19,7 @@ import re
 import sys
 import time
 import traceback
+import socket
 try:
     import ConfigParser as configparser
 except ImportError:
@@ -29,14 +30,14 @@ sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), 'pac
 
 from .__about__ import __version__
 from .compat import u, open, is_py3
-from .offlinequeue import Queue
 from .logger import setup_logging
-from .project import find_project
-from .stats import get_file_stats
+from .offlinequeue import Queue
 from .packages import argparse
 from .packages import simplejson as json
-from .packages import requests
 from .packages.requests.exceptions import RequestException
+from .project import get_project_info
+from .session_cache import SessionCache
+from .stats import get_file_stats
 try:
     from .packages import tzlocal
 except:
@@ -157,8 +158,11 @@ def parseArguments(argv):
     parser.add_argument('--proxy', dest='proxy',
                         help='optional https proxy url; for example: '+
                         'https://user:pass@localhost:8080')
-    parser.add_argument('--project', dest='project_name',
-            help='optional project name; auto-discovered project takes priority')
+    parser.add_argument('--project', dest='project',
+            help='optional project name')
+    parser.add_argument('--alternate-project', dest='alternate_project',
+            help='optional alternate project name; auto-discovered project takes priority')
+    parser.add_argument('--hostname', dest='hostname', help='hostname of current machine.')
     parser.add_argument('--disableoffline', dest='offline',
             action='store_false',
             help='disables offline time logging instead of queuing logged time')
@@ -301,7 +305,7 @@ def get_user_agent(plugin):
     return user_agent
 
 
-def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=None,
+def send_heartbeat(project=None, branch=None, hostname=None, stats={}, key=None, targetFile=None,
         timestamp=None, isWrite=None, plugin=None, offline=None, notfile=False,
         hidefilenames=None, proxy=None, api_url=None, **kwargs):
     """Sends heartbeat as POST request to WakaTime api server.
@@ -312,14 +316,15 @@ def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=Non
     log.debug('Sending heartbeat to api at %s' % api_url)
     data = {
         'time': timestamp,
-        'file': targetFile,
+        'entity': targetFile,
+        'type': 'file',
     }
     if hidefilenames and targetFile is not None and not notfile:
-        data['file'] = data['file'].rsplit('/', 1)[-1].rsplit('\\', 1)[-1]
-        if len(data['file'].strip('.').split('.', 1)) > 1:
-            data['file'] = u('HIDDEN.{ext}').format(ext=u(data['file'].strip('.').rsplit('.', 1)[-1]))
+        data['entity'] = data['entity'].rsplit('/', 1)[-1].rsplit('\\', 1)[-1]
+        if len(data['entity'].strip('.').split('.', 1)) > 1:
+            data['entity'] = u('HIDDEN.{ext}').format(ext=u(data['entity'].strip('.').rsplit('.', 1)[-1]))
         else:
-            data['file'] = u('HIDDEN')
+            data['entity'] = u('HIDDEN')
     if stats.get('lines'):
         data['lines'] = stats['lines']
     if stats.get('language'):
@@ -348,6 +353,8 @@ def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=Non
         'Accept': 'application/json',
         'Authorization': auth,
     }
+    if hostname:
+        headers['X-Machine-Name'] = hostname
     proxies = {}
     if proxy:
         proxies['https'] = proxy
@@ -360,10 +367,13 @@ def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=Non
     if tz:
         headers['TimeZone'] = u(tz.zone)
 
+    session_cache = SessionCache()
+    session = session_cache.get()
+
     # log time to api
     response = None
     try:
-        response = requests.post(api_url, data=request_body, headers=headers,
+        response = session.post(api_url, data=request_body, headers=headers,
                                  proxies=proxies)
     except RequestException:
         exception_data = {
@@ -385,6 +395,7 @@ def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=Non
             log.debug({
                 'response_code': response_code,
             })
+            session_cache.save(session)
             return True
         if offline:
             if response_code != 400:
@@ -410,6 +421,7 @@ def send_heartbeat(project=None, branch=None, stats={}, key=None, targetFile=Non
                 'response_code': response_code,
                 'response_content': response_content,
             })
+    session_cache.delete()
     return False
 
 
@@ -435,21 +447,17 @@ def main(argv=None):
         stats = get_file_stats(args.targetFile, notfile=args.notfile,
                                lineno=args.lineno, cursorpos=args.cursorpos)
 
-        project = None
+        project, branch = None, None
         if not args.notfile:
-            project = find_project(args.targetFile, configs=configs)
-        branch = None
-        project_name = args.project_name
-        if project:
-            branch = project.branch()
-            project_name = project.name()
+            project, branch = get_project_info(configs=configs, args=args)
 
-        if send_heartbeat(
-                project=project_name,
-                branch=branch,
-                stats=stats,
-                **vars(args)
-            ):
+        kwargs = vars(args)
+        kwargs['project'] = project
+        kwargs['branch'] = branch
+        kwargs['stats'] = stats
+        kwargs['hostname'] = args.hostname or socket.gethostname()
+
+        if send_heartbeat(**kwargs):
             queue = Queue()
             while True:
                 heartbeat = queue.pop()
@@ -460,6 +468,7 @@ def main(argv=None):
                     targetFile=heartbeat['file'],
                     timestamp=heartbeat['time'],
                     branch=heartbeat['branch'],
+                    hostname=kwargs['hostname'],
                     stats=json.loads(heartbeat['stats']),
                     key=args.key,
                     isWrite=heartbeat['is_write'],

packages/wakatime/cli.py

@@ -11,8 +11,25 @@
 
 import os
 import sys
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-import wakatime
+
+
+# get path to local wakatime package
+package_folder = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+# add local wakatime package to sys.path
+sys.path.insert(0, package_folder)
+
+# import local wakatime package
+try:
+    import wakatime
+except TypeError:
+    # on Windows, non-ASCII characters in import path can be fixed using
+    # the script path from sys.argv[0].
+    # More info at https://github.com/wakatime/wakatime/issues/32
+    package_folder = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
+    sys.path.insert(0, package_folder)
+    import wakatime
+
 
 if __name__ == '__main__':
     sys.exit(wakatime.main(sys.argv))

packages/wakatime/logger.py

@@ -9,7 +9,6 @@
     :license: BSD, see LICENSE for more details.
 """
 
-import inspect
 import logging
 import os
 import sys
@@ -38,33 +37,34 @@ class CustomEncoder(json.JSONEncoder):
 
 class JsonFormatter(logging.Formatter):
 
-    def setup(self, timestamp, isWrite, targetFile, version, plugin):
+    def setup(self, timestamp, isWrite, targetFile, version, plugin, verbose,
+              warnings=False):
         self.timestamp = timestamp
         self.isWrite = isWrite
         self.targetFile = targetFile
         self.version = version
         self.plugin = plugin
+        self.verbose = verbose
+        self.warnings = warnings
 
-    def format(self, record):
+    def format(self, record, *args):
         data = OrderedDict([
             ('now', self.formatTime(record, self.datefmt)),
         ])
-        try:
-            data['package'] = inspect.stack()[9][0].f_globals.get('__package__')
-            data['lineno'] = inspect.stack()[9][2]
-        except:
-            pass
         data['version'] = self.version
         data['plugin'] = self.plugin
         data['time'] = self.timestamp
-        data['isWrite'] = self.isWrite
-        data['file'] = self.targetFile
+        if self.verbose:
+            data['caller'] = record.pathname
+            data['lineno'] = record.lineno
+            data['isWrite'] = self.isWrite
+            data['file'] = self.targetFile
+            if not self.isWrite:
+                del data['isWrite']
         data['level'] = record.levelname
-        data['message'] = record.msg
+        data['message'] = record.getMessage() if self.warnings else record.msg
         if not self.plugin:
             del data['plugin']
-        if not self.isWrite:
-            del data['isWrite']
         return CustomEncoder().encode(data)
 
     def formatException(self, exc_info):
@@ -79,7 +79,6 @@ def set_log_level(logger, args):
 
 
 def setup_logging(args, version):
-    logging.captureWarnings(True)
     logger = logging.getLogger('WakaTime')
     set_log_level(logger, args)
     if len(logger.handlers) > 0:
@@ -90,6 +89,7 @@ def setup_logging(args, version):
             targetFile=args.targetFile,
             version=version,
             plugin=args.plugin,
+            verbose=args.verbose,
         )
         logger.handlers[0].setFormatter(formatter)
         return logger
@@ -104,8 +104,27 @@ def setup_logging(args, version):
         targetFile=args.targetFile,
         version=version,
         plugin=args.plugin,
+        verbose=args.verbose,
     )
     handler.setFormatter(formatter)
     logger.addHandler(handler)
-    logging.getLogger('py.warnings').addHandler(handler)
+
+    warnings_formatter = JsonFormatter(datefmt='%Y/%m/%d %H:%M:%S %z')
+    warnings_formatter.setup(
+        timestamp=args.timestamp,
+        isWrite=args.isWrite,
+        targetFile=args.targetFile,
+        version=version,
+        plugin=args.plugin,
+        verbose=args.verbose,
+        warnings=True,
+    )
+    warnings_handler = logging.FileHandler(os.path.expanduser(logfile))
+    warnings_handler.setFormatter(warnings_formatter)
+    logging.getLogger('py.warnings').addHandler(warnings_handler)
+    try:
+        logging.captureWarnings(True)
+    except AttributeError:
+        pass  # Python >= 2.7 is needed to capture warnings
+
     return logger

packages/wakatime/offlinequeue.py

@@ -1,10 +1,9 @@
 # -*- coding: utf-8 -*-
 """
-    wakatime.queue
-    ~~~~~~~~~~~~~~
+    wakatime.offlinequeue
+    ~~~~~~~~~~~~~~~~~~~~~
 
-    Queue for offline time logging.
-    http://wakatime.com
+    Queue for saving heartbeats while offline.
 
     :copyright: (c) 2014 Alan Hamlett.
     :license: BSD, see LICENSE for more details.
@@ -51,7 +50,7 @@ class Queue(object):
         try:
             conn, c = self.connect()
             heartbeat = {
-                'file': data.get('file'),
+                'file': data.get('entity'),
                 'time': data.get('time'),
                 'project': data.get('project'),
                 'branch': data.get('branch'),

packages/wakatime/project.py

@@ -15,30 +15,70 @@ from .projects.git import Git
 from .projects.mercurial import Mercurial
 from .projects.projectmap import ProjectMap
 from .projects.subversion import Subversion
-from .projects.wakatime import WakaTime
+from .projects.wakatime_project_file import WakaTimeProjectFile
 
 
 log = logging.getLogger('WakaTime')
 
 
 # List of plugin classes to find a project for the current file path.
-# Project plugins will be processed with priority in the order below.
-PLUGINS = [
-    WakaTime,
+CONFIG_PLUGINS = [
+    WakaTimeProjectFile,
     ProjectMap,
+]
+REV_CONTROL_PLUGINS = [
     Git,
     Mercurial,
     Subversion,
 ]
 
 
-def find_project(path, configs=None):
-    for plugin in PLUGINS:
-        plugin_name = plugin.__name__.lower()
-        plugin_configs = None
-        if configs and configs.has_section(plugin_name):
-            plugin_configs = dict(configs.items(plugin_name))
-        project = plugin(path, configs=plugin_configs)
+def get_project_info(configs=None, args=None):
+    """Find the current project and branch.
+
+    First looks for a .wakatime-project file. Second, uses the --project arg.
+    Third, uses the folder name from a revision control repository. Last, uses
+    the --alternate-project arg.
+
+    Returns a project, branch tuple.
+    """
+
+    project_name, branch_name = None, None
+
+    for plugin_cls in CONFIG_PLUGINS:
+
+        plugin_name = plugin_cls.__name__.lower()
+        plugin_configs = get_configs_for_plugin(plugin_name, configs)
+
+        project = plugin_cls(args.targetFile, configs=plugin_configs)
         if project.process():
-            return project
+            project_name = project.name()
+            branch_name = project.branch()
+            break
+
+    if project_name is None:
+        project_name = args.project
+
+    if project_name is None or branch_name is None:
+
+        for plugin_cls in REV_CONTROL_PLUGINS:
+
+            plugin_name = plugin_cls.__name__.lower()
+            plugin_configs = get_configs_for_plugin(plugin_name, configs)
+
+            project = plugin_cls(args.targetFile, configs=plugin_configs)
+            if project.process():
+                project_name = project_name or project.name()
+                branch_name = branch_name or project.branch()
+                break
+
+    if project_name is None:
+        project_name = args.alternate_project
+
+    return project_name, branch_name
+
+
+def get_configs_for_plugin(plugin_name, configs):
+    if configs and configs.has_section(plugin_name):
+        return dict(configs.items(plugin_name))
     return None

packages/wakatime/projects/wakatime_project_file.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 """
-    wakatime.projects.wakatime
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+    wakatime.projects.wakatime_project_file
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     Information from a .wakatime-project file about the project for
     a given file. First line of .wakatime-project sets the project
@@ -21,7 +21,7 @@ from ..compat import u, open
 log = logging.getLogger('WakaTime')
 
 
-class WakaTime(BaseProject):
+class WakaTimeProjectFile(BaseProject):
 
     def process(self):
         self.config = self._find_config(self.path)

packages/wakatime/session_cache.py

@@ -0,0 +1,109 @@
+# -*- coding: utf-8 -*-
+"""
+    wakatime.session_cache
+    ~~~~~~~~~~~~~~~~~~~~~~
+
+    Persist requests.Session for multiprocess SSL handshake pooling.
+
+    :copyright: (c) 2015 Alan Hamlett.
+    :license: BSD, see LICENSE for more details.
+"""
+
+
+import logging
+import os
+import pickle
+import sys
+import traceback
+
+try:
+    import sqlite3
+    HAS_SQL = True
+except ImportError:
+    HAS_SQL = False
+
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), 'packages'))
+
+from .packages import requests
+
+
+log = logging.getLogger('WakaTime')
+
+
+class SessionCache(object):
+    DB_FILE = os.path.join(os.path.expanduser('~'), '.wakatime.db')
+
+    def connect(self):
+        conn = sqlite3.connect(self.DB_FILE)
+        c = conn.cursor()
+        c.execute('''CREATE TABLE IF NOT EXISTS session (
+            value BLOB)
+        ''')
+        return (conn, c)
+
+
+    def save(self, session):
+        """Saves a requests.Session object for the next heartbeat process.
+        """
+
+        if not HAS_SQL:
+            return
+        try:
+            conn, c = self.connect()
+            c.execute('DELETE FROM session')
+            values = {
+                'value': pickle.dumps(session),
+            }
+            c.execute('INSERT INTO session VALUES (:value)', values)
+            conn.commit()
+            conn.close()
+        except:
+            log.error(traceback.format_exc())
+
+
+    def get(self):
+        """Returns a requests.Session object.
+
+        Gets Session from sqlite3 cache or creates a new Session.
+        """
+
+        if not HAS_SQL:
+            return requests.session()
+
+        try:
+            conn, c = self.connect()
+        except:
+            log.error(traceback.format_exc())
+            return requests.session()
+
+        session = None
+        try:
+            c.execute('BEGIN IMMEDIATE')
+            c.execute('SELECT value FROM session LIMIT 1')
+            row = c.fetchone()
+            if row is not None:
+                session = pickle.loads(row[0])
+        except:
+            log.error(traceback.format_exc())
+
+        try:
+            conn.close()
+        except:
+            log.error(traceback.format_exc())
+
+        return session if session is not None else requests.session()
+
+
+    def delete(self):
+        """Clears all cached Session objects.
+        """
+
+        if not HAS_SQL:
+            return
+        try:
+            conn, c = self.connect()
+            c.execute('DELETE FROM session')
+            conn.commit()
+            conn.close()
+        except:
+            log.error(traceback.format_exc())

packages/wakatime/stats.py

@@ -20,13 +20,15 @@ if sys.version_info[0] == 2:
     sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), 'packages', 'pygments_py2'))
 else:
     sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), 'packages', 'pygments_py3'))
-from pygments.lexers import guess_lexer_for_filename
+from pygments.lexers import get_lexer_by_name, guess_lexer_for_filename
+from pygments.modeline import get_filetype_from_buffer
+from pygments.util import ClassNotFound
 
 
 log = logging.getLogger('WakaTime')
 
 
-# force file name extensions to be recognized as a certain language
+# extensions taking priority over lexer
 EXTENSIONS = {
     'j2': 'HTML',
     'markdown': 'Markdown',
@@ -34,6 +36,8 @@ EXTENSIONS = {
     'mdown': 'Markdown',
     'twig': 'Twig',
 }
+
+# lexers to human readable languages
 TRANSLATIONS = {
     'CSS+Genshi Text': 'CSS',
     'CSS+Lasso': 'CSS',
@@ -45,31 +49,132 @@ TRANSLATIONS = {
     'RHTML': 'HTML',
 }
 
+# extensions for when no lexer is found
+AUXILIARY_EXTENSIONS = {
+    'vb': 'VB.net',
+}
+
 
 def guess_language(file_name):
-    language, lexer = None, None
-    try:
-        with open(file_name, 'r', encoding='utf-8') as fh:
-            lexer = guess_lexer_for_filename(file_name, fh.read(512000))
-    except:
-        pass
+    """Guess lexer and language for a file.
+
+    Returns (language, lexer) tuple where language is a unicode string.
+    """
+
+    lexer = smart_guess_lexer(file_name)
+
+    language = None
+
+    # guess language from file extension
     if file_name:
-        language = guess_language_from_extension(file_name.rsplit('.', 1)[-1])
-    if lexer and language is None:
-        language = translate_language(u(lexer.name))
+        language = get_language_from_extension(file_name, EXTENSIONS)
+
+    # get language from lexer if we didn't have a hard-coded extension rule
+    if language is None and lexer:
+        language = u(lexer.name)
+
+    if language is None:
+        language = get_language_from_extension(file_name, AUXILIARY_EXTENSIONS)
+
+    if language is not None:
+        language = translate_language(language)
+
     return language, lexer
 
 
-def guess_language_from_extension(extension):
+def smart_guess_lexer(file_name):
+    """Guess Pygments lexer for a file.
+
+    Looks for a vim modeline in file contents, then compares the accuracy
+    of that lexer with a second guess. The second guess looks up all lexers
+    matching the file name, then runs a text analysis for the best choice.
+    """
+    lexer = None
+
+    text = get_file_contents(file_name)
+
+    lexer_1, accuracy_1 = guess_lexer_using_filename(file_name, text)
+    lexer_2, accuracy_2 = guess_lexer_using_modeline(text)
+
+    if lexer_1:
+        lexer = lexer_1
+    if (lexer_2 and accuracy_2 and
+        (not accuracy_1 or accuracy_2 > accuracy_1)):
+        lexer = lexer_2
+
+    return lexer
+
+
+def guess_lexer_using_filename(file_name, text):
+    """Guess lexer for given text, limited to lexers for this file's extension.
+
+    Returns a tuple of (lexer, accuracy).
+    """
+
+    lexer, accuracy = None, None
+
+    try:
+        lexer = guess_lexer_for_filename(file_name, text)
+    except:
+        pass
+
+    if lexer is not None:
+        try:
+            accuracy = lexer.analyse_text(text)
+        except:
+            pass
+
+    return lexer, accuracy
+
+
+def guess_lexer_using_modeline(text):
+    """Guess lexer for given text using Vim modeline.
+
+    Returns a tuple of (lexer, accuracy).
+    """
+
+    lexer, accuracy = None, None
+
+    file_type = None
+    try:
+        file_type = get_filetype_from_buffer(text)
+    except:
+        pass
+
+    if file_type is not None:
+        try:
+            lexer = get_lexer_by_name(file_type)
+        except ClassNotFound:
+            pass
+
+    if lexer is not None:
+        try:
+            accuracy = lexer.analyse_text(text)
+        except:
+            pass
+
+    return lexer, accuracy
+
+
+def get_language_from_extension(file_name, extension_map):
+    """Returns a matching language for the given file_name using extension_map.
+    """
+
+    extension = file_name.rsplit('.', 1)[-1] if len(file_name.rsplit('.', 1)) > 1 else None
+
     if extension:
-        if extension in EXTENSIONS:
-            return EXTENSIONS[extension]
-        if extension.lower() in EXTENSIONS:
-            return EXTENSIONS[extension.lower()]
+        if extension in extension_map:
+            return extension_map[extension]
+        if extension.lower() in extension_map:
+            return extension_map[extension.lower()]
+
     return None
 
 
 def translate_language(language):
+    """Turns Pygments lexer class name string into human-readable language.
+    """
+
     if language in TRANSLATIONS:
         language = TRANSLATIONS[language]
     return language
@@ -107,3 +212,16 @@ def get_file_stats(file_name, notfile=False, lineno=None, cursorpos=None):
             'cursorpos': cursorpos,
         }
     return stats
+
+
+def get_file_contents(file_name):
+    """Returns the first 512000 bytes of the file's contents.
+    """
+
+    text = None
+    try:
+        with open(file_name, 'r', encoding='utf-8') as fh:
+            text = fh.read(512000)
+    except:
+        pass
+    return text