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_synthesize(): Helper function: when the users passes a specific 

value for the 'using' parameter of the get() function
                or the BROWSER environment variable, if the thing
                passed in is a path (as seems to be the case with KDE)
                instead of a short name, examine the available
                controllers to see if we can synthesize one based on a
                pre-registered controller that shares the same base
                name.

get():  If the user specifies a browser we don't know about, use
        _synthesize() to attempt to create a usable controller.

Some small adjustments were needed in some of the browser classes to
support this.
This commit is contained in:
Fred Drake 2001-04-12 22:07:27 +00:00
parent bb0bae6da2
commit f4e5bd9df5
1 changed files with 50 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
Lib/webbrowser.py
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@ -27,7 +27,10 @@ def get(using=None):
return GenericBrowser(browser)
else:
# User gave us a browser name.
command = _browsers[browser.lower()]
try:
command = _browsers[browser.lower()]
except KeyError:
command = _synthesize(browser)
if command[1] is None:
return command[0]()
else:
@ -42,6 +45,37 @@ def open(url, new=0, autoraise=1):
def open_new(url): # Marked deprecated. May be removed in 2.1.
get().open(url, 1)
def _synthesize(browser):
"""Attempt to synthesize a controller base on existing controllers.
This is useful to create a controller when a user specifies a path to
an entry in the BROWSER environment variable -- we can copy a general
controller to operate using a specific installation of the desired
browser in this way.
If we can't create a controller in this way, or if there is no
executable for the requested browser, return [None, None].
"""
if not os.path.exists(browser):
return [None, None]
name = os.path.basename(browser)
try:
command = _browsers[name.lower()]
except KeyError:
return [None, None]
# now attempt to clone to fit the new name:
controller = command[1]
if controller and name.lower() == controller.basename:
import copy
controller = copy.copy(controller)
controller.name = browser
controller.basename = os.path.basename(browser)
register(browser, None, controller)
return [None, controller]
ret
#
# Everything after this point initializes _browsers and _tryorder,
# then disappears. Some class definitions and instances remain
@ -74,10 +108,12 @@ if os.environ.get("TERM") or os.environ.get("DISPLAY"):
class GenericBrowser:
def __init__(self, cmd):
self.command = cmd
self.name, self.args = cmd.split(None, 1)
self.basename = os.path.basename(self.name)
def open(self, url, new=0, autoraise=1):
os.system(self.command % url)
command = "%s %s" % (self.name, self.args)
os.system(command % url)
def open_new(self, url): # Deprecated. May be removed in 2.1.
self.open(url)
@ -102,6 +138,7 @@ if os.environ.get("TERM") or os.environ.get("DISPLAY"):
"Launcher class for Netscape browsers."
def __init__(self, name):
self.name = name
self.basename = os.path.basename(name)
def _remote(self, action, autoraise):
raise_opt = ("-noraise", "-raise")[autoraise]
@ -144,15 +181,21 @@ if os.environ.get("TERM") or os.environ.get("DISPLAY"):
for more information on the Konqueror remote-control interface.
"""
def __init__(self):
if _iscommand("konqueror"):
self.name = self.basename = "konqueror"
else:
self.name = self.basename = "kfm"
def _remote(self, action):
cmd = "kfmclient %s >/dev/null 2>&1" % action
rc = os.system(cmd)
if rc:
import time
if _iscommand("konqueror"):
os.system("konqueror --silent &")
if self.basename == "konqueror":
os.system(self.name + " --silent &")
else:
os.system("kfm -d &")
os.system(self.name + " -d &")
time.sleep(PROCESS_CREATION_DELAY)
rc = os.system(cmd)
return not rc
@ -165,7 +208,7 @@ if os.environ.get("TERM") or os.environ.get("DISPLAY"):
# Deprecated. May be removed in 2.1.
open_new = open
register("kfm", Konqueror, None)
register("kfm", Konqueror, Konqueror())
# Grail, the Python browser.
if _iscommand("grail"):