mirror of
https://github.com/python/cpython.git
synced 2025-11-03 23:21:29 +00:00
266 lines
9.3 KiB
Python
266 lines
9.3 KiB
Python
"""Remote-control interfaces to common browsers."""
|
|
|
|
import os
|
|
import sys
|
|
|
|
class Error(Exception):
|
|
pass
|
|
|
|
_browsers = {} # Dictionary of available browser controllers
|
|
_tryorder = [] # Preference order of available browsers
|
|
|
|
def register(name, klass, instance=None):
|
|
"""Register a browser connector and, optionally, connection."""
|
|
_browsers[name.lower()] = [klass, instance]
|
|
|
|
def get(using=None):
|
|
"""Return a browser launcher instance appropriate for the environment."""
|
|
if using:
|
|
alternatives = [using]
|
|
else:
|
|
alternatives = _tryorder
|
|
for browser in alternatives:
|
|
if browser.find('%s') > -1:
|
|
# User gave us a command line, don't mess with it.
|
|
return browser
|
|
else:
|
|
# User gave us a browser name.
|
|
command = _browsers[browser.lower()]
|
|
if command[1] is None:
|
|
return command[0]()
|
|
else:
|
|
return command[1]
|
|
raise Error("could not locate runnable browser")
|
|
|
|
# Please note: the following definition hides a builtin function.
|
|
|
|
def open(url, new=0, autoraise=1):
|
|
get().open(url, new, autoraise)
|
|
|
|
def open_new(url): # Marked deprecated. May be removed in 2.1.
|
|
get().open(url, 1)
|
|
|
|
#
|
|
# Everything after this point initializes _browsers and _tryorder,
|
|
# then disappears. Some class definitions and instances remain
|
|
# live through these globals, but only the minimum set needed to
|
|
# support the user's platform.
|
|
#
|
|
|
|
#
|
|
# Platform support for Unix
|
|
#
|
|
|
|
# This is the right test because all these Unix browsers require either
|
|
# a console terminal of an X display to run. Note that we cannot split
|
|
# the TERM and DISPLAY cases, because we might be running Python from inside
|
|
# an xterm.
|
|
if os.environ.get("TERM") or os.environ.get("DISPLAY"):
|
|
PROCESS_CREATION_DELAY = 4
|
|
global tryorder
|
|
_tryorder = ("mozilla","netscape","kfm","grail","links","lynx","w3m")
|
|
|
|
def _iscommand(cmd):
|
|
"""Return true if cmd can be found on the executable search path."""
|
|
path = os.environ.get("PATH")
|
|
if not path:
|
|
return 0
|
|
for d in path.split(os.pathsep):
|
|
exe = os.path.join(d, cmd)
|
|
if os.path.isfile(exe):
|
|
return 1
|
|
return 0
|
|
|
|
class GenericBrowser:
|
|
def __init__(self, cmd):
|
|
self.command = cmd
|
|
|
|
def open(self, url, new=0, autoraise=1):
|
|
os.system(self.command % url)
|
|
|
|
def open_new(self, url): # Deprecated. May be removed in 2.1.
|
|
self.open(url)
|
|
|
|
# Easy cases first -- register console browsers if we have them.
|
|
if os.environ.get("TERM"):
|
|
# The Links browser <http://artax.karlin.mff.cuni.cz/~mikulas/links/>
|
|
if _iscommand("links"):
|
|
register("links", None, GenericBrowser("links %s"))
|
|
# The Lynx browser <http://lynx.browser.org/>
|
|
if _iscommand("lynx"):
|
|
register("lynx", None, GenericBrowser("lynx %s"))
|
|
# The w3m browser <http://ei5nazha.yz.yamagata-u.ac.jp/~aito/w3m/eng/>
|
|
if _iscommand("w3m"):
|
|
register("w3m", None, GenericBrowser("w3m %s"))
|
|
|
|
# X browsers have mre in the way of options
|
|
if os.environ.get("DISPLAY"):
|
|
# First, the Netscape series
|
|
if _iscommand("netscape") or _iscommand("mozilla"):
|
|
class Netscape:
|
|
"Launcher class for Netscape browsers."
|
|
def __init__(self, name):
|
|
self.name = name
|
|
|
|
def _remote(self, action, autoraise):
|
|
raise_opt = ("-noraise", "-raise")[autoraise]
|
|
cmd = "%s %s -remote '%s' >/dev/null 2>&1" % (self.name, raise_opt, action)
|
|
rc = os.system(cmd)
|
|
if rc:
|
|
import time
|
|
os.system("%s -no-about-splash &" % self.name)
|
|
time.sleep(PROCESS_CREATION_DELAY)
|
|
rc = os.system(cmd)
|
|
return not rc
|
|
|
|
def open(self, url, new=0, autoraise=1):
|
|
if new:
|
|
self._remote("openURL(%s, new-window)"%url, autoraise)
|
|
else:
|
|
self._remote("openURL(%s)" % url, autoraise)
|
|
|
|
# Deprecated. May be removed in 2.1.
|
|
def open_new(self, url):
|
|
self.open(url, 1)
|
|
|
|
if _iscommand("mozilla"):
|
|
register("mozilla", None, Netscape("mozilla"))
|
|
if _iscommand("netscape"):
|
|
register("netscape", None, Netscape("netscape"))
|
|
|
|
# Next, Mosaic -- old but still in use.
|
|
if _iscommand("mosaic"):
|
|
register("mosaic", None, GenericBrowser("mosaic %s >/dev/null &"))
|
|
|
|
# Konqueror/kfm, the KDE browser.
|
|
if _iscommand("kfm"):
|
|
class Konqueror:
|
|
"""Controller for the KDE File Manager (kfm, or Konqueror).
|
|
|
|
See http://developer.kde.org/documentation/other/kfmclient.html
|
|
for more information on the Konqueror remote-control interface.
|
|
|
|
"""
|
|
def _remote(self, action):
|
|
cmd = "kfmclient %s >/dev/null 2>&1" % action
|
|
rc = os.system(cmd)
|
|
if rc:
|
|
import time
|
|
os.system("kfm -d &")
|
|
time.sleep(PROCESS_CREATION_DELAY)
|
|
rc = os.system(cmd)
|
|
return not rc
|
|
|
|
def open(self, url, new=1, autoraise=1):
|
|
# XXX Currently I know no way to prevent KFM from opening a new win.
|
|
self._remote("openURL %s" % url)
|
|
|
|
# Deprecated. May be removed in 2.1.
|
|
open_new = open
|
|
|
|
register("kfm", Konqueror, None)
|
|
|
|
# Grail, the Python browser.
|
|
if _iscommand("grail"):
|
|
class Grail:
|
|
# There should be a way to maintain a connection to
|
|
# Grail, but the Grail remote control protocol doesn't
|
|
# really allow that at this point. It probably neverwill!
|
|
def _find_grail_rc(self):
|
|
import glob
|
|
import pwd
|
|
import socket
|
|
import tempfile
|
|
tempdir = os.path.join(tempfile.gettempdir(), ".grail-unix")
|
|
user = pwd.getpwuid(_os.getuid())[0]
|
|
filename = os.path.join(tempdir, user + "-*")
|
|
maybes = glob.glob(filename)
|
|
if not maybes:
|
|
return None
|
|
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
|
for fn in maybes:
|
|
# need to PING each one until we find one that's live
|
|
try:
|
|
s.connect(fn)
|
|
except socket.error:
|
|
# no good; attempt to clean it out, but don't fail:
|
|
try:
|
|
os.unlink(fn)
|
|
except IOError:
|
|
pass
|
|
else:
|
|
return s
|
|
|
|
def _remote(self, action):
|
|
s = self._find_grail_rc()
|
|
if not s:
|
|
return 0
|
|
s.send(action)
|
|
s.close()
|
|
return 1
|
|
|
|
def open(self, url, new=0, autoraise=1):
|
|
if new:
|
|
self._remote("LOADNEW " + url)
|
|
else:
|
|
self._remote("LOAD " + url)
|
|
|
|
# Deprecated. May be removed in 2.1.
|
|
def open_new(self, url):
|
|
self.open(url, 1)
|
|
|
|
register("grail", Grail, None)
|
|
|
|
#
|
|
# Platform support for Windows
|
|
#
|
|
|
|
if sys.platform[:3] == "win":
|
|
global _tryorder
|
|
_tryorder = ("netscape", "windows-default")
|
|
|
|
class WindowsDefault:
|
|
def open(self, url, new=0, autoraise=1):
|
|
os.startfile(url)
|
|
|
|
def open_new(self, url): # Deprecated. May be removed in 2.1.
|
|
self.open(url)
|
|
|
|
register("windows-default", WindowsDefault)
|
|
|
|
#
|
|
# Platform support for MacOS
|
|
#
|
|
|
|
try:
|
|
import ic
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
class InternetConfig:
|
|
def open(self, url, new=0, autoraise=1):
|
|
ic.launchurl(url)
|
|
|
|
def open_new(self, url): # Deprecated. May be removed in 2.1.
|
|
self.open(url)
|
|
|
|
# internet-config is the only supported controller on MacOS,
|
|
# so don't mess with the default!
|
|
_tryorder = ("internet-config")
|
|
register("internet-config", InternetConfig)
|
|
|
|
# OK, now that we know what the default preference orders for each
|
|
# platform are, allow user to override them with the BROWSER variable.
|
|
#
|
|
if os.environ.has_key("BROWSER"):
|
|
# It's the user's responsibility to register handlers for any unknown
|
|
# browser referenced by this value, before calling open().
|
|
_tryorder = os.environ["BROWSER"].split(":")
|
|
else:
|
|
# Optimization: filter out alternatives that aren't available, so we can
|
|
# avoid has_key() tests at runtime. (This may also allow some unused
|
|
# classes and class-instance storage to be garbage-collected.)
|
|
_tryorder = filter(lambda x: _browsers.has_key(x.lower()) or x.find("%s")>-1,\
|
|
_tryorder)
|
|
|
|
# end
|