dupeguru/hscommon/desktop.py

# Created By: Virgil Dupras
# Created On: 2013-10-12
# Copyright 2013 Hardcoded Software (http://www.hardcoded.net)
# 
# This software is licensed under the "BSD" License as described in the "LICENSE" file, 
# which should be included with this package. The terms are also available at 
# http://www.hardcoded.net/licenses/bsd_license

import os.path as op
import logging

class SpecialFolder:
    AppData = 1
    Cache = 2

def open_url(url):
    """Open ``url`` with the default browser.
    """
    _open_url(url)

def open_path(path):
    """Open ``path`` with its associated application.
    """
    _open_path(str(path))

def reveal_path(path):
    """Open the folder containing ``path`` with the default file browser.
    """
    _reveal_path(str(path))

def special_folder_path(special_folder, appname=None):
    """Returns the path of ``special_folder``.
    
    ``special_folder`` is a SpecialFolder.* const. The result is the special folder for the current
    application. The running process' application info is used to determine relevant information.
    
    You can override the application name with ``appname``. This argument is ingored under Qt.
    """
    return _special_folder_path(special_folder, appname)

try:
    # Normally, we would simply do "from cocoa import proxy", but due to a bug in pytest (currently
    # at v2.4.2), our test suite is broken when we do that. This below is a workaround until that
    # bug is fixed.
    import cocoa
    if not hasattr(cocoa, 'proxy'):
        raise ImportError()
    proxy = cocoa.proxy
    _open_url = proxy.openURL_
    _open_path = proxy.openPath_
    _reveal_path = proxy.revealPath_
    
    def _special_folder_path(special_folder, appname=None):
        if special_folder == SpecialFolder.Cache:
            base = proxy.getCachePath()
        else:
            base = proxy.getAppdataPath()
        if not appname:
            appname = proxy.bundleInfo_('CFBundleName')
        return op.join(base, appname)
    
except ImportError:
    try:
        from PyQt4.QtCore import QUrl
        from PyQt4.QtGui import QDesktopServices
        def _open_path(path):
            url = QUrl.fromLocalFile(str(path))
            QDesktopServices.openUrl(url)
        
        def _reveal_path(path):
            _open_path(op.dirname(str(path)))
        
        def _special_folder_path(special_folder, appname=None):
            if special_folder == SpecialFolder.Cache:
                qtfolder = QDesktopServices.CacheLocation
            else:
                qtfolder = QDesktopServices.DataLocation
            return str(QDesktopServices.storageLocation(qtfolder))
        
    except ImportError:
        # We're either running tests, and these functions don't matter much or we're in a really
        # weird situation. Let's just have dummy fallbacks.
        logging.warning("Can't setup desktop functions!")
        def _open_path(path):
            pass
        
        def _reveal_path(path):
            pass
        
        def _special_folder_path(special_folder, appname=None):
            return '/tmp'