#!/usr/bin/python
# Terminator by Chris Jones <cmsj@tenshu.net>
# GPL v2 only
"""terminal.py - classes necessary to provide Terminal widgets"""

import sys
import pygtk
pygtk.require('2.0')
import gtk

from util import dbg, err, gerr
from config import Config
from titlebar import Titlebar
from searchbar import Searchbar

try:
    import vte
except ImportError:
    gerr('You need to install python bindings for libvte')
    sys.exit(1)

# pylint: disable-msg=R0904
class Terminal(gtk.VBox):
    """Class implementing the VTE widget and its wrappings"""

    vte = None
    titlebar = None
    searchbar = None

    matches = None
    config = None
    default_encoding = None

    def __init__(self):
        """Class initialiser"""
        gtk.VBox.__init__(self)
        self.matches = {}

        self.config = Config()

        self.vte = vte.Terminal()
        self.vte.set_size(80, 24)
        self.vte._expose_data = None
        self.vte.show()
        self.default_encoding = self.vte.get_encoding()
        self.update_url_matches(self.config['try_posix_regexp'])

        self.titlebar = Titlebar()
        self.searchbar = Searchbar()

        self.show()
        self.pack_start(self.titlebar, False)
        self.pack_start(self.terminalbox)
        self.pack_end(self.searchbar)

    def update_url_matches(self, posix = True):
        """Update the regexps used to match URLs"""
        userchars = "-A-Za-z0-9"
        passchars = "-A-Za-z0-9,?;.:/!%$^*&~\"#'"
        hostchars = "-A-Za-z0-9"
        pathchars = "-A-Za-z0-9_$.+!*(),;:@&=?/~#%'\""
        schemes   = "(news:|telnet:|nntp:|file:/|https?:|ftps?:|webcal:)"
        user      = "[" + userchars + "]+(:[" + passchars + "]+)?"
        urlpath   = "/[" + pathchars + "]*[^]'.}>) \t\r\n,\\\"]"

        if posix:
            dbg ('update_url_matches: Trying POSIX URL regexps.  Set \
                    try_posix_regexp = False in config to only try GNU \
                    if you get (harmless) VTE warnings.')
            lboundry = "[[:<:]]"
            rboundry = "[[:>:]]"
        else: # GNU
            dbg ('update_url_matches: Trying GNU URL regexps.  Set \
                    try_posix_regexp = True in config if URLs are not \
                    detected.')
            lboundry = "\\<"
            rboundry = "\\>"

        self.matches['full_uri'] = self._vte.match_add(lboundry + schemes + 
                "//(" + user + "@)?[" + hostchars  +".]+(:[0-9]+)?(" + 
                urlpath + ")?" + rboundry + "/?")

        if self.matches['full_uri'] == -1:
            if posix:
                err ('update_url_matches: POSIX match failed, trying GNU')
                self.update_url_matches(posix = False)
            else:
                err ('update_url_matches: Failed adding URL match patterns')
        else:
            self.matches['voip'] = self._vte.match_add(lboundry + 
                    '(callto:|h323:|sip:)' + "[" + userchars + "+][" + 
                    userchars + ".]*(:[0-9]+)?@?[" + pathchars + "]+" + 
                    rboundry)
            self.matches['addr_only'] = self._vte.match_add (lboundry + 
                    "(www|ftp)[" + hostchars + "]*\.[" + hostchars + 
                    ".]+(:[0-9]+)?(" + urlpath + ")?" + rboundry + "/?")
            self.matches['email'] = self._vte.match_add (lboundry + 
                    "(mailto:)?[a-zA-Z0-9][a-zA-Z0-9.+-]*@[a-zA-Z0-9]\
                            [a-zA-Z0-9-]*\.[a-zA-Z0-9][a-zA-Z0-9-]+\
                            [.a-zA-Z0-9-]*" + rboundry)
            self.matches['nntp'] = self._vte.match_add (lboundry + 
                    '''news:[-A-Z\^_a-z{|}~!"#$%&'()*+,./0-9;:=?`]+@\
                            [-A-Za-z0-9.]+(:[0-9]+)?''' + rboundry)
            # if the url looks like a Launchpad changelog closure entry 
            # LP: #92953 - make it a url to http://bugs.launchpad.net
            self.matches['launchpad'] = self._vte.match_add (
                    '\\bLP:? #?[0-9]+\\b')

# vim: set expandtab ts=4 sw=4: