macurl2path.py :  » Mobile » Python-for-PalmOS » Python-1.5.2+reduced-1.0 » Lib » Python Open Source

Home
Python Open Source
1.3.1.2 Python
2.Ajax
3.Aspect Oriented
4.Blog
5.Build
6.Business Application
7.Chart Report
8.Content Management Systems
9.Cryptographic
10.Database
11.Development
12.Editor
13.Email
14.ERP
15.Game 2D 3D
16.GIS
17.GUI
18.IDE
19.Installer
20.IRC
21.Issue Tracker
22.Language Interface
23.Log
24.Math
25.Media Sound Audio
26.Mobile
27.Network
28.Parser
29.PDF
30.Project Management
31.RSS
32.Search
33.Security
34.Template Engines
35.Test
36.UML
37.USB Serial
38.Web Frameworks
39.Web Server
40.Web Services
41.Web Unit
42.Wiki
43.Windows
44.XML
Python Open Source » Mobile » Python for PalmOS 
Python for PalmOS » Python 1.5.2 reduced 1.0 » Lib » macurl2path.py
"""Macintosh-specific module for conversion between pathnames and URLs.

Do not import directly; use urllib instead."""

import string
import urllib
import os

def url2pathname(pathname):
    "Convert /-delimited pathname to mac pathname"
    #
    # XXXX The .. handling should be fixed...
    #
    tp = urllib.splittype(pathname)[0]
    if tp and tp <> 'file':
        raise RuntimeError, 'Cannot convert non-local URL to pathname'
    # Turn starting /// into /, an empty hostname means current host
    if pathname[:3] == '///':
      pathname = pathname[2:]
    elif pathname[:2] == '//':
        raise RuntimeError, 'Cannot convert non-local URL to pathname'
    components = string.split(pathname, '/')
    # Remove . and embedded ..
    i = 0
    while i < len(components):
        if components[i] == '.':
            del components[i]
        elif components[i] == '..' and i > 0 and \
                                  components[i-1] not in ('', '..'):
            del components[i-1:i+1]
            i = i-1
        elif components[i] == '' and i > 0 and components[i-1] <> '':
            del components[i]
        else:
            i = i+1
    if not components[0]:
        # Absolute unix path, don't start with colon
        rv = string.join(components[1:], ':')
    else:
        # relative unix path, start with colon. First replace
        # leading .. by empty strings (giving ::file)
        i = 0
        while i < len(components) and components[i] == '..':
            components[i] = ''
            i = i + 1
        rv = ':' + string.join(components, ':')
    # and finally unquote slashes and other funny characters
    return urllib.unquote(rv)

def pathname2url(pathname):
    "convert mac pathname to /-delimited pathname"
    if '/' in pathname:
        raise RuntimeError, "Cannot convert pathname containing slashes"
    components = string.split(pathname, ':')
    # Remove empty first and/or last component
    if components[0] == '':
        del components[0]
    if components[-1] == '':
        del components[-1]
    # Replace empty string ('::') by .. (will result in '/../' later)
    for i in range(len(components)):
        if components[i] == '':
            components[i] = '..'
    # Truncate names longer than 31 bytes
    components = map(_pncomp2url, components)

    if os.path.isabs(pathname):
        return '/' + string.join(components, '/')
    else:
        return string.join(components, '/')
        
def _pncomp2url(component):
  component = urllib.quote(component[:31], safe='')  # We want to quote slashes
  return component
  
def test():
    for url in ["index.html",
                "bar/index.html",
                "/foo/bar/index.html",
                "/foo/bar/",
                "/"]:
        print `url`, '->', `url2pathname(url)`
    for path in ["drive:",
                 "drive:dir:",
                 "drive:dir:file",
                 "drive:file",
                 "file",
                 ":file",
                 ":dir:",
                 ":dir:file"]:
        print `path`, '->', `pathname2url(path)`

if __name__ == '__main__':
    test()
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.