Library import 16 (#2433)

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1 files changed, 686 insertions, 0 deletions

diff --git a/contrib/tools/python3/Lib/webbrowser.py b/contrib/tools/python3/Lib/webbrowser.py
new file mode 100755
index 0000000000..ba6711e4ef
--- /dev/null
+++ b/contrib/tools/python3/Lib/webbrowser.py
@@ -0,0 +1,686 @@
+#! /usr/bin/env python3
+"""Interfaces for launching and remotely controlling web browsers."""
+# Maintained by Georg Brandl.
+
+import os
+import shlex
+import shutil
+import sys
+import subprocess
+import threading
+import warnings
+
+__all__ = ["Error", "open", "open_new", "open_new_tab", "get", "register"]
+
+class Error(Exception):
+    pass
+
+_lock = threading.RLock()
+_browsers = {}                  # Dictionary of available browser controllers
+_tryorder = None                # Preference order of available browsers
+_os_preferred_browser = None    # The preferred browser
+
+def register(name, klass, instance=None, *, preferred=False):
+    """Register a browser connector."""
+    with _lock:
+        if _tryorder is None:
+            register_standard_browsers()
+        _browsers[name.lower()] = [klass, instance]
+
+        # Preferred browsers go to the front of the list.
+        # Need to match to the default browser returned by xdg-settings, which
+        # may be of the form e.g. "firefox.desktop".
+        if preferred or (_os_preferred_browser and name in _os_preferred_browser):
+            _tryorder.insert(0, name)
+        else:
+            _tryorder.append(name)
+
+def get(using=None):
+    """Return a browser launcher instance appropriate for the environment."""
+    if _tryorder is None:
+        with _lock:
+            if _tryorder is None:
+                register_standard_browsers()
+    if using is not None:
+        alternatives = [using]
+    else:
+        alternatives = _tryorder
+    for browser in alternatives:
+        if '%s' in browser:
+            # User gave us a command line, split it into name and args
+            browser = shlex.split(browser)
+            if browser[-1] == '&':
+                return BackgroundBrowser(browser[:-1])
+            else:
+                return GenericBrowser(browser)
+        else:
+            # User gave us a browser name or path.
+            try:
+                command = _browsers[browser.lower()]
+            except KeyError:
+                command = _synthesize(browser)
+            if command[1] is not None:
+                return command[1]
+            elif command[0] is not None:
+                return command[0]()
+    raise Error("could not locate runnable browser")
+
+# Please note: the following definition hides a builtin function.
+# It is recommended one does "import webbrowser" and uses webbrowser.open(url)
+# instead of "from webbrowser import *".
+
+def open(url, new=0, autoraise=True):
+    """Display url using the default browser.
+
+    If possible, open url in a location determined by new.
+    - 0: the same browser window (the default).
+    - 1: a new browser window.
+    - 2: a new browser page ("tab").
+    If possible, autoraise raises the window (the default) or not.
+    """
+    if _tryorder is None:
+        with _lock:
+            if _tryorder is None:
+                register_standard_browsers()
+    for name in _tryorder:
+        browser = get(name)
+        if browser.open(url, new, autoraise):
+            return True
+    return False
+
+def open_new(url):
+    """Open url in a new window of the default browser.
+
+    If not possible, then open url in the only browser window.
+    """
+    return open(url, 1)
+
+def open_new_tab(url):
+    """Open url in a new page ("tab") of the default browser.
+
+    If not possible, then the behavior becomes equivalent to open_new().
+    """
+    return open(url, 2)
+
+
+def _synthesize(browser, *, preferred=False):
+    """Attempt to synthesize a controller based 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].
+
+    """
+    cmd = browser.split()[0]
+    if not shutil.which(cmd):
+        return [None, None]
+    name = os.path.basename(cmd)
+    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, instance=controller, preferred=preferred)
+        return [None, controller]
+    return [None, None]
+
+
+# General parent classes
+
+class BaseBrowser(object):
+    """Parent class for all browsers. Do not use directly."""
+
+    args = ['%s']
+
+    def __init__(self, name=""):
+        self.name = name
+        self.basename = name
+
+    def open(self, url, new=0, autoraise=True):
+        raise NotImplementedError
+
+    def open_new(self, url):
+        return self.open(url, 1)
+
+    def open_new_tab(self, url):
+        return self.open(url, 2)
+
+
+class GenericBrowser(BaseBrowser):
+    """Class for all browsers started with a command
+       and without remote functionality."""
+
+    def __init__(self, name):
+        if isinstance(name, str):
+            self.name = name
+            self.args = ["%s"]
+        else:
+            # name should be a list with arguments
+            self.name = name[0]
+            self.args = name[1:]
+        self.basename = os.path.basename(self.name)
+
+    def open(self, url, new=0, autoraise=True):
+        sys.audit("webbrowser.open", url)
+        cmdline = [self.name] + [arg.replace("%s", url)
+                                 for arg in self.args]
+        try:
+            if sys.platform[:3] == 'win':
+                p = subprocess.Popen(cmdline)
+            else:
+                p = subprocess.Popen(cmdline, close_fds=True)
+            return not p.wait()
+        except OSError:
+            return False
+
+
+class BackgroundBrowser(GenericBrowser):
+    """Class for all browsers which are to be started in the
+       background."""
+
+    def open(self, url, new=0, autoraise=True):
+        cmdline = [self.name] + [arg.replace("%s", url)
+                                 for arg in self.args]
+        sys.audit("webbrowser.open", url)
+        try:
+            if sys.platform[:3] == 'win':
+                p = subprocess.Popen(cmdline)
+            else:
+                p = subprocess.Popen(cmdline, close_fds=True,
+                                     start_new_session=True)
+            return (p.poll() is None)
+        except OSError:
+            return False
+
+
+class UnixBrowser(BaseBrowser):
+    """Parent class for all Unix browsers with remote functionality."""
+
+    raise_opts = None
+    background = False
+    redirect_stdout = True
+    # In remote_args, %s will be replaced with the requested URL.  %action will
+    # be replaced depending on the value of 'new' passed to open.
+    # remote_action is used for new=0 (open).  If newwin is not None, it is
+    # used for new=1 (open_new).  If newtab is not None, it is used for
+    # new=3 (open_new_tab).  After both substitutions are made, any empty
+    # strings in the transformed remote_args list will be removed.
+    remote_args = ['%action', '%s']
+    remote_action = None
+    remote_action_newwin = None
+    remote_action_newtab = None
+
+    def _invoke(self, args, remote, autoraise, url=None):
+        raise_opt = []
+        if remote and self.raise_opts:
+            # use autoraise argument only for remote invocation
+            autoraise = int(autoraise)
+            opt = self.raise_opts[autoraise]
+            if opt: raise_opt = [opt]
+
+        cmdline = [self.name] + raise_opt + args
+
+        if remote or self.background:
+            inout = subprocess.DEVNULL
+        else:
+            # for TTY browsers, we need stdin/out
+            inout = None
+        p = subprocess.Popen(cmdline, close_fds=True, stdin=inout,
+                             stdout=(self.redirect_stdout and inout or None),
+                             stderr=inout, start_new_session=True)
+        if remote:
+            # wait at most five seconds. If the subprocess is not finished, the
+            # remote invocation has (hopefully) started a new instance.
+            try:
+                rc = p.wait(5)
+                # if remote call failed, open() will try direct invocation
+                return not rc
+            except subprocess.TimeoutExpired:
+                return True
+        elif self.background:
+            if p.poll() is None:
+                return True
+            else:
+                return False
+        else:
+            return not p.wait()
+
+    def open(self, url, new=0, autoraise=True):
+        sys.audit("webbrowser.open", url)
+        if new == 0:
+            action = self.remote_action
+        elif new == 1:
+            action = self.remote_action_newwin
+        elif new == 2:
+            if self.remote_action_newtab is None:
+                action = self.remote_action_newwin
+            else:
+                action = self.remote_action_newtab
+        else:
+            raise Error("Bad 'new' parameter to open(); " +
+                        "expected 0, 1, or 2, got %s" % new)
+
+        args = [arg.replace("%s", url).replace("%action", action)
+                for arg in self.remote_args]
+        args = [arg for arg in args if arg]
+        success = self._invoke(args, True, autoraise, url)
+        if not success:
+            # remote invocation failed, try straight way
+            args = [arg.replace("%s", url) for arg in self.args]
+            return self._invoke(args, False, False)
+        else:
+            return True
+
+
+class Mozilla(UnixBrowser):
+    """Launcher class for Mozilla browsers."""
+
+    remote_args = ['%action', '%s']
+    remote_action = ""
+    remote_action_newwin = "-new-window"
+    remote_action_newtab = "-new-tab"
+    background = True
+
+
+class Epiphany(UnixBrowser):
+    """Launcher class for Epiphany browser."""
+
+    raise_opts = ["-noraise", ""]
+    remote_args = ['%action', '%s']
+    remote_action = "-n"
+    remote_action_newwin = "-w"
+    background = True
+
+
+class Chrome(UnixBrowser):
+    "Launcher class for Google Chrome browser."
+
+    remote_args = ['%action', '%s']
+    remote_action = ""
+    remote_action_newwin = "--new-window"
+    remote_action_newtab = ""
+    background = True
+
+Chromium = Chrome
+
+
+class Opera(UnixBrowser):
+    "Launcher class for Opera browser."
+
+    remote_args = ['%action', '%s']
+    remote_action = ""
+    remote_action_newwin = "--new-window"
+    remote_action_newtab = ""
+    background = True
+
+
+class Elinks(UnixBrowser):
+    "Launcher class for Elinks browsers."
+
+    remote_args = ['-remote', 'openURL(%s%action)']
+    remote_action = ""
+    remote_action_newwin = ",new-window"
+    remote_action_newtab = ",new-tab"
+    background = False
+
+    # elinks doesn't like its stdout to be redirected -
+    # it uses redirected stdout as a signal to do -dump
+    redirect_stdout = False
+
+
+class Konqueror(BaseBrowser):
+    """Controller for the KDE File Manager (kfm, or Konqueror).
+
+    See the output of ``kfmclient --commands``
+    for more information on the Konqueror remote-control interface.
+    """
+
+    def open(self, url, new=0, autoraise=True):
+        sys.audit("webbrowser.open", url)
+        # XXX Currently I know no way to prevent KFM from opening a new win.
+        if new == 2:
+            action = "newTab"
+        else:
+            action = "openURL"
+
+        devnull = subprocess.DEVNULL
+
+        try:
+            p = subprocess.Popen(["kfmclient", action, url],
+                                 close_fds=True, stdin=devnull,
+                                 stdout=devnull, stderr=devnull)
+        except OSError:
+            # fall through to next variant
+            pass
+        else:
+            p.wait()
+            # kfmclient's return code unfortunately has no meaning as it seems
+            return True
+
+        try:
+            p = subprocess.Popen(["konqueror", "--silent", url],
+                                 close_fds=True, stdin=devnull,
+                                 stdout=devnull, stderr=devnull,
+                                 start_new_session=True)
+        except OSError:
+            # fall through to next variant
+            pass
+        else:
+            if p.poll() is None:
+                # Should be running now.
+                return True
+
+        try:
+            p = subprocess.Popen(["kfm", "-d", url],
+                                 close_fds=True, stdin=devnull,
+                                 stdout=devnull, stderr=devnull,
+                                 start_new_session=True)
+        except OSError:
+            return False
+        else:
+            return (p.poll() is None)
+
+
+class Edge(UnixBrowser):
+    "Launcher class for Microsoft Edge browser."
+
+    remote_args = ['%action', '%s']
+    remote_action = ""
+    remote_action_newwin = "--new-window"
+    remote_action_newtab = ""
+    background = True
+
+
+#
+# Platform support for Unix
+#
+
+# These are the right tests because all these Unix browsers require either
+# a console terminal or an X display to run.
+
+def register_X_browsers():
+
+    # use xdg-open if around
+    if shutil.which("xdg-open"):
+        register("xdg-open", None, BackgroundBrowser("xdg-open"))
+
+    # Opens an appropriate browser for the URL scheme according to
+    # freedesktop.org settings (GNOME, KDE, XFCE, etc.)
+    if shutil.which("gio"):
+        register("gio", None, BackgroundBrowser(["gio", "open", "--", "%s"]))
+
+    # Equivalent of gio open before 2015
+    if "GNOME_DESKTOP_SESSION_ID" in os.environ and shutil.which("gvfs-open"):
+        register("gvfs-open", None, BackgroundBrowser("gvfs-open"))
+
+    # The default KDE browser
+    if "KDE_FULL_SESSION" in os.environ and shutil.which("kfmclient"):
+        register("kfmclient", Konqueror, Konqueror("kfmclient"))
+
+    # Common symbolic link for the default X11 browser
+    if shutil.which("x-www-browser"):
+        register("x-www-browser", None, BackgroundBrowser("x-www-browser"))
+
+    # The Mozilla browsers
+    for browser in ("firefox", "iceweasel", "seamonkey", "mozilla-firefox",
+                    "mozilla"):
+        if shutil.which(browser):
+            register(browser, None, Mozilla(browser))
+
+    # Konqueror/kfm, the KDE browser.
+    if shutil.which("kfm"):
+        register("kfm", Konqueror, Konqueror("kfm"))
+    elif shutil.which("konqueror"):
+        register("konqueror", Konqueror, Konqueror("konqueror"))
+
+    # Gnome's Epiphany
+    if shutil.which("epiphany"):
+        register("epiphany", None, Epiphany("epiphany"))
+
+    # Google Chrome/Chromium browsers
+    for browser in ("google-chrome", "chrome", "chromium", "chromium-browser"):
+        if shutil.which(browser):
+            register(browser, None, Chrome(browser))
+
+    # Opera, quite popular
+    if shutil.which("opera"):
+        register("opera", None, Opera("opera"))
+
+
+    if shutil.which("microsoft-edge"):
+        register("microsoft-edge", None, Edge("microsoft-edge"))
+
+
+def register_standard_browsers():
+    global _tryorder
+    _tryorder = []
+
+    if sys.platform == 'darwin':
+        register("MacOSX", None, MacOSXOSAScript('default'))
+        register("chrome", None, MacOSXOSAScript('chrome'))
+        register("firefox", None, MacOSXOSAScript('firefox'))
+        register("safari", None, MacOSXOSAScript('safari'))
+        # OS X can use below Unix support (but we prefer using the OS X
+        # specific stuff)
+
+    if sys.platform == "serenityos":
+        # SerenityOS webbrowser, simply called "Browser".
+        register("Browser", None, BackgroundBrowser("Browser"))
+
+    if sys.platform[:3] == "win":
+        # First try to use the default Windows browser
+        register("windows-default", WindowsDefault)
+
+        # Detect some common Windows browsers, fallback to Microsoft Edge
+        # location in 64-bit Windows
+        edge64 = os.path.join(os.environ.get("PROGRAMFILES(x86)", "C:\\Program Files (x86)"),
+                              "Microsoft\\Edge\\Application\\msedge.exe")
+        # location in 32-bit Windows
+        edge32 = os.path.join(os.environ.get("PROGRAMFILES", "C:\\Program Files"),
+                              "Microsoft\\Edge\\Application\\msedge.exe")
+        for browser in ("firefox", "seamonkey", "mozilla", "chrome",
+                        "opera", edge64, edge32):
+            if shutil.which(browser):
+                register(browser, None, BackgroundBrowser(browser))
+        if shutil.which("MicrosoftEdge.exe"):
+            register("microsoft-edge", None, Edge("MicrosoftEdge.exe"))
+    else:
+        # Prefer X browsers if present
+        if os.environ.get("DISPLAY") or os.environ.get("WAYLAND_DISPLAY"):
+            try:
+                cmd = "xdg-settings get default-web-browser".split()
+                raw_result = subprocess.check_output(cmd, stderr=subprocess.DEVNULL)
+                result = raw_result.decode().strip()
+            except (FileNotFoundError, subprocess.CalledProcessError, PermissionError, NotADirectoryError) :
+                pass
+            else:
+                global _os_preferred_browser
+                _os_preferred_browser = result
+
+            register_X_browsers()
+
+        # Also try console browsers
+        if os.environ.get("TERM"):
+            # Common symbolic link for the default text-based browser
+            if shutil.which("www-browser"):
+                register("www-browser", None, GenericBrowser("www-browser"))
+            # The Links/elinks browsers <http://links.twibright.com/>
+            if shutil.which("links"):
+                register("links", None, GenericBrowser("links"))
+            if shutil.which("elinks"):
+                register("elinks", None, Elinks("elinks"))
+            # The Lynx browser <https://lynx.invisible-island.net/>, <http://lynx.browser.org/>
+            if shutil.which("lynx"):
+                register("lynx", None, GenericBrowser("lynx"))
+            # The w3m browser <http://w3m.sourceforge.net/>
+            if shutil.which("w3m"):
+                register("w3m", None, GenericBrowser("w3m"))
+
+    # OK, now that we know what the default preference orders for each
+    # platform are, allow user to override them with the BROWSER variable.
+    if "BROWSER" in os.environ:
+        userchoices = os.environ["BROWSER"].split(os.pathsep)
+        userchoices.reverse()
+
+        # Treat choices in same way as if passed into get() but do register
+        # and prepend to _tryorder
+        for cmdline in userchoices:
+            if cmdline != '':
+                cmd = _synthesize(cmdline, preferred=True)
+                if cmd[1] is None:
+                    register(cmdline, None, GenericBrowser(cmdline), preferred=True)
+
+    # what to do if _tryorder is now empty?
+
+
+#
+# Platform support for Windows
+#
+
+if sys.platform[:3] == "win":
+    class WindowsDefault(BaseBrowser):
+        def open(self, url, new=0, autoraise=True):
+            sys.audit("webbrowser.open", url)
+            try:
+                os.startfile(url)
+            except OSError:
+                # [Error 22] No application is associated with the specified
+                # file for this operation: '<URL>'
+                return False
+            else:
+                return True
+
+#
+# Platform support for MacOS
+#
+
+if sys.platform == 'darwin':
+    # Adapted from patch submitted to SourceForge by Steven J. Burr
+    class MacOSX(BaseBrowser):
+        """Launcher class for Aqua browsers on Mac OS X
+
+        Optionally specify a browser name on instantiation.  Note that this
+        will not work for Aqua browsers if the user has moved the application
+        package after installation.
+
+        If no browser is specified, the default browser, as specified in the
+        Internet System Preferences panel, will be used.
+        """
+        def __init__(self, name):
+            warnings.warn(f'{self.__class__.__name__} is deprecated in 3.11'
+                          ' use MacOSXOSAScript instead.', DeprecationWarning, stacklevel=2)
+            self.name = name
+
+        def open(self, url, new=0, autoraise=True):
+            sys.audit("webbrowser.open", url)
+            assert "'" not in url
+            # hack for local urls
+            if not ':' in url:
+                url = 'file:'+url
+
+            # new must be 0 or 1
+            new = int(bool(new))
+            if self.name == "default":
+                # User called open, open_new or get without a browser parameter
+                script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
+            else:
+                # User called get and chose a browser
+                if self.name == "OmniWeb":
+                    toWindow = ""
+                else:
+                    # Include toWindow parameter of OpenURL command for browsers
+                    # that support it.  0 == new window; -1 == existing
+                    toWindow = "toWindow %d" % (new - 1)
+                cmd = 'OpenURL "%s"' % url.replace('"', '%22')
+                script = '''tell application "%s"
+                                activate
+                                %s %s
+                            end tell''' % (self.name, cmd, toWindow)
+            # Open pipe to AppleScript through osascript command
+            osapipe = os.popen("osascript", "w")
+            if osapipe is None:
+                return False
+            # Write script to osascript's stdin
+            osapipe.write(script)
+            rc = osapipe.close()
+            return not rc
+
+    class MacOSXOSAScript(BaseBrowser):
+        def __init__(self, name='default'):
+            super().__init__(name)
+
+        @property
+        def _name(self):
+            warnings.warn(f'{self.__class__.__name__}._name is deprecated in 3.11'
+                          f' use {self.__class__.__name__}.name instead.',
+                          DeprecationWarning, stacklevel=2)
+            return self.name
+
+        @_name.setter
+        def _name(self, val):
+            warnings.warn(f'{self.__class__.__name__}._name is deprecated in 3.11'
+                          f' use {self.__class__.__name__}.name instead.',
+                          DeprecationWarning, stacklevel=2)
+            self.name = val
+
+        def open(self, url, new=0, autoraise=True):
+            sys.audit("webbrowser.open", url)
+            if self.name == 'default':
+                script = 'open location "%s"' % url.replace('"', '%22') # opens in default browser
+            else:
+                script = f'''
+                   tell application "%s"
+                       activate
+                       open location "%s"
+                   end
+                   '''%(self.name, url.replace('"', '%22'))
+
+            osapipe = os.popen("osascript", "w")
+            if osapipe is None:
+                return False
+
+            osapipe.write(script)
+            rc = osapipe.close()
+            return not rc
+
+
+def main():
+    import getopt
+    usage = """Usage: %s [-n | -t | -h] url
+    -n: open new window
+    -t: open new tab
+    -h, --help: show help""" % sys.argv[0]
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], 'ntdh',['help'])
+    except getopt.error as msg:
+        print(msg, file=sys.stderr)
+        print(usage, file=sys.stderr)
+        sys.exit(1)
+    new_win = 0
+    for o, a in opts:
+        if o == '-n': new_win = 1
+        elif o == '-t': new_win = 2
+        elif o == '-h' or o == '--help':
+            print(usage, file=sys.stderr)
+            sys.exit()
+    if len(args) != 1:
+        print(usage, file=sys.stderr)
+        sys.exit(1)
+
+    url = args[0]
+    open(url, new_win)
+
+    print("\a")
+
+if __name__ == "__main__":
+    main()