airmtp.py 文件源码

def establishAppEnvironment():

    g.isWin32 = (platform.system() == 'Windows')
    g.isOSX = (platform.system() == 'Darwin') 
    g.isFrozen = (getattr(sys, 'frozen', False)) # note for OSX isFrozen is always false because py2app only marks airnef.pyw as frozen when we're a py2app

    #
    # determine the directory our script resides in, in case the
    # user is executing from a different working directory.
    #
    g.appDir = os.path.dirname(os.path.realpath(sys.argv[0]))

    #
    # determine directory for our APPDATA, which contains log
    # and configuration files. For Win32 if we're frozen this
    # goes in the dedicated OS area for application data files
    #
    g.appDataDir = None
    if g.isFrozen and g.isWin32:
        if os.getenv('LOCALAPPDATA'):
            g.appDataDir = os.path.join(os.getenv('LOCALAPPDATA'), "airmtp\\appdata") # typically C:\Users\<username>\AppData\Local\airnef\appdata
    elif g.isOSX: # for OSX we always try to store our app data under Application Support
        userHomeDir = os.getenv('HOME')
        if userHomeDir:
            applicationSupportDir = os.path.join(userHomeDir, 'Library/Application Support')
            if os.path.exists(applicationSupportDir): # probably not necessary to check existence since every system should have this directory
                g.appDataDir = os.path.join(applicationSupportDir, 'airmtp/appdata')
    if not g.appDataDir:
        # none of runtime-specific cases above selected an app data directory - use directory based off our app directory
        g.appDataDir = os.path.join(g.appDir, "appdata")
    # create our app-specific subdirectories if necessary
    if not os.path.exists(g.appDataDir):
        os.makedirs(g.appDataDir)


#
# transltes a date or date+time string from the user into an
# epoch time (ie, time in seconds).
#