/usr/bin/ttb is in ttb 1.0.1+20101115-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# -*-mode:python-*-*
# Time-stamp: <2010-01-10 11:45:29 (djcb)>
#
# Browser for Teletekst pages
#
# -------------------------------------------------------------------------
#
# Copyright 2004-2009 Dirk-Jan C. Binnema
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# -------------------------------------------------------------------------
#
# The current version of GPL can be found at http://www.gnu.org/licenses/gpl.txt
#
# -------------------------------------------------------------------------
#
# The purpose of this program is to view Teletekst pages, as provided
# by teletekst.nos.nl.
#
# Please visit http://www.djcbsoftware.nl/code/ttb for more information.
#
# -------------------------------------------------------------------------
# import some stuff
import sys,httplib,urllib2,os,tempfile,time,random
import pygtk
pygtk.require("2.0")
import gtk, gtk.glade
from HTMLParser import HTMLParser
from optparse import OptionParser
import re
ttb_version = '1.0.1'
ttb_user_agent = "TTB/" + ttb_version
ttb_title = "TTB Teletekst Browser"
ttb_cache_time = 300
ttb_max_history = 50
ttb_glade_data = 'ttb/ttb.glade'
ttb_icon_data = 'pixmaps/ttb.png'
ttb_debug = 0
class TTBException:
def __init__ (self,msg):
self.msg = msg
def msg (self):
return msg
#
# our main application class
#
class TTB:
def __init__ (self,glade,icon,page):
self.network = Network()
self.model = PageManager(self.network,page)
self.gui = GUI(glade,icon,self.model);
self.gui.start()
#
# the PageManager is the 'model' and the 'control' that manages the data
# about the current page
#
class PageManager:
class History:
hist = []
cursor = 0
def append (self,page):
# throw away future
del self.hist [self.cursor+1:]
self.hist.append (page)
# throw away ancient history
if (len(self.hist) > ttb_max_history):
del self.hist[0:(len(self.hist) - ttb_max_history -1)]
self.cursor = len(self.hist) - 1
def current (self):
if len (self.hist) == 0:
return None
else:
return self.hist[self.cursor]
def forward (self):
self.cursor = self.cursor + 1
if self.cursor >= len(self.hist):
self.cursor = len(self.hist) - 1
return self.current()
def backward (self):
self.cursor = self.cursor - 1
if self.cursor < 0:
self.cursor = 0
return self.current()
metainfo = None
history = History ()
def __init__ (self,network,page):
self.network = network
self.image_file = ''
self.metainfo = None
self.page = (0,0)
self.page = self.goto_page(page)
def get_image_file (self):
return self.image_file
def get_page (self):
return self.page
# move to another page; in case the page changes.
# the subpage will be set to 1
def goto_neighbour_page (self,prev=0,sub=0):
neighbour_page = self.metainfo.neighbour_page (self.page,prev,sub)
if neighbour_page==None:
delta = (+1,-1)[prev]
neighbour_page = self.page
if sub:
neighbour_page = (neighbour_page[0], neighbour_page[1] + delta)
else:
neighbour_page = (neighbour_page[0] + delta, neighbour_page[1])
return self.goto_page (neighbour_page)
def goto_page (self,page,nocache=0,add_to_history=1):
if 100>page[0] or page[0]>999:
page = (100,1)
if page[1] < 1 or page[1] > 99:
page = (page[0],1)
new_image = ''
metainfo = None
try:
(new_image,metainfo) = self.network.retrieve_page (page, nocache)
if add_to_history:
self.history.append (page)
except:
if (page[1] != 1):
page = (page[0],1)
return self.goto_page (page,nocache,add_to_history)
else:
print "error retrieving page " + str(page)
try:
self.image_file = self.network.retrieve_error_page()
return self.page
except:
error_exit ("Verbinding met Teletekst mislukt!")
self.image_file = new_image
self.metainfo = metainfo
self.page = page
return self.page
def cleanup (self):
del self.network
#
# the GUI class handles all of the GTK UI things; the actual layout comes
# from the glade string
#
class GUI:
class Size:
SMALLER = -1
BIGGER = 1
NORMAL = 0
sizes = [[0.7, 0.7],
[1.0, 1.0],
[1.5, 1.5],
[2.0, 2.0],
[3.0, 3.0]]
current = 1
def __init__ (self):
self.current = 1 # start at 100%
def factor (self):
return self.sizes[self.current]
def grow (self):
self.current = self.current + 1
if self.current >= len (self.sizes):
self.current = len (self.sizes) - 1
def shrink (self):
self.current = self.current - 1
if self.current < 0:
self.current = 0
def normalize (self, cursor):
return [int(cursor[0] / self.factor()[0]),
int(cursor[1] / self.factor()[1])]
def __init__(self, glade, icon, model):
# the model is a PageManager instance
self.model = model
self.size = self.Size()
self.in_progress = 0
self.cursor_restore = None
# whether new number in entry should replace old one
# or merely edit
self.entry_replace = 1
# the main window
self.widgets = gtk.glade.XML (glade,'window_main')
self.widgets.signal_autoconnect (self)
# the main window
self.main_window = self.widgets.get_widget('window_main')
# the help dialog
helpwidgets = gtk.glade.XML (glade,'dialog_help')
helpwidgets.signal_autoconnect(self)
self.help_dialog = helpwidgets.get_widget('dialog_help')
self.help_dialog.set_transient_for (self.main_window)
# the about dialog
self.about_dialog = None
try:
self.main_window.set_icon_from_file (icon)
self.help_dialog.set_icon_from_file (icon)
except:
print "icon not supported with this version of pygtk"
# some more widgets
self.page_num_entry = self.widgets.get_widget('entry_page')
self.sub_page_num_entry = self.widgets.get_widget('entry_subpage')
self.image_holder = self.widgets.get_widget('image_holder')
self.button_next = self.widgets.get_widget('button_next')
self.button_prev = self.widgets.get_widget('button_prev')
self.main_vbox = self.widgets.get_widget('vbox_main')
# destroy
self.main_window.connect ('destroy',self.on_exit)
self.widgets.get_widget('button_exit').connect('clicked',self.on_exit)
# can receive window events
self.image_holder.add_events(gtk.gdk.POINTER_MOTION_MASK|
gtk.gdk.LEAVE_NOTIFY_MASK)
self.image_holder.connect('button_press_event',
self.on_image_button_press_event)
self.image_holder.connect('motion_notify_event',
self.on_image_motion_notify_event)
self.image_holder.connect('leave_notify_event',
self.on_image_leave_notify_event)
self.image_holder.show()
# setup d&d
self.image_holder.drag_source_set (gtk.gdk.BUTTON1_MASK,
[("text/uri-list",0,1)],
gtk.gdk.ACTION_COPY)
self.image_holder.connect('drag_data_get',self.on_drag_data_get)
def start (self):
self.update()
gtk.main()
def goto_page(self,page,nocache=0,add_to_history=1):
self.look_busy(1)
self.page = self.model.goto_page(page,nocache,add_to_history)
self.update()
self.look_busy(0)
def goto_neighbour_page (self,prev=0,sub=0):
self.look_busy(1)
self.page = self.model.goto_neighbour_page(prev,sub)
self.update()
self.look_busy(0)
def resize (self,how):
self.look_busy(1)
if how == self.size.NORMAL:
self.size.back_to_normal()
elif how == self.size.SMALLER:
self.size.shrink ()
elif how == self.size.BIGGER:
self.size.grow()
else:
raise TTBException("illegal size for zooming")
self.update()
self.look_busy(0)
def update (self):
image_file = self.model.get_image_file()
if len(image_file) != 0:
image = self.image_holder.get_child()
if image:
self.image_holder.remove(image)
image.destroy()
image = gtk.Image()
# maybe we need to scale the image...
factor = self.size.factor()
if factor[0] == 1.0 and factor[1] == 1.0:
image.set_from_file (image_file)
else:
pixbuf = gtk.gdk.pixbuf_new_from_file (image_file)
(w,h) = (pixbuf.get_width(),pixbuf.get_height())
# for integer zooming, nearest point is faster and better
if int(factor[0]) == factor[0] and int(factor[1]) == factor[1]:
method = gtk.gdk.INTERP_NEAREST
else:
method = gtk.gdk.INTERP_BILINEAR
image.set_from_pixbuf (
pixbuf.scale_simple(int(factor[0]*w),int(factor[1]*h),method))
self.image_holder.add(image)
image.show()
currpage = self.model.get_page()
if currpage != None:
self.page_num_entry.set_text(str(currpage[0]))
self.sub_page_num_entry.set_text(str(currpage[1]))
self.main_window.set_title ('%s [%d/%d]' % (ttb_title,
currpage[0],
currpage[1]))
self.image_holder.grab_focus()
#
# manage the way the cursor looks, and the sensitivity
# of the navigation keys
#
def look_busy (self,busy):
self.button_next.set_sensitive(not busy)
self.button_prev.set_sensitive(not busy)
gdk_window = self.main_vbox.get_parent_window()
if gdk_window != None:
if busy:
gdk_window.set_cursor(gtk.gdk.Cursor(gtk.gdk.WATCH))
else:
gdk_window.set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
gtk.main_iteration(0)
def refresh (self):
self.look_busy(1)
self.goto_page(self.model.get_page(),1,0) # don't add to hist
self.look_busy(0)
return
def on_button_press_event (self,button,event):
sub = event.button == 3
prev = (0,1)[button.get_name() == 'button_prev']
self.goto_neighbour_page (prev,sub)
def on_drag_data_get (self,widget,context,selection,target_type,event_time):
uri = 'file://' + self.model.get_image_file()
selection.set (selection.target,8,uri)
# called when a key is pressed while we are inside the entry box
# for page numbers
def on_entry_key_press_event (self,widget,event,data=None):
if event.keyval in [gtk.keysyms.Return,gtk.keysyms.KP_Enter]:
self.goto_page ([int(self.page_num_entry.get_text()),
int(self.sub_page_num_entry.get_text())])
self.image_holder.grab_focus()
self.entry_replace = 1
return 0
else:
# numbers are ok, including keypad numbers
if event.keyval in (range(gtk.keysyms._0,gtk.keysyms._9 + 1) +
range(gtk.keysyms.KP_0,gtk.keysyms.KP_9 + 1)):
if self.entry_replace:
widget.set_text('')
self.entry_replace = 0
return 0
# and so are the basic editing keys
# also support keypad...
if event.keyval in [gtk.keysyms.BackSpace,
gtk.keysyms.Delete,
gtk.keysyms.Left, gtk.keysyms.KP_Left,
gtk.keysyms.Right, gtk.keysyms.KP_Right,
gtk.keysyms.Home,
gtk.keysyms.End,
gtk.keysyms.Tab, gtk.keysyms.KP_Tab]:
return 0
# ignore the rest
return 1
# refresh the page
def on_button_refresh_clicked (self, *args):
self.refresh()
# show the about box
def on_button_about_clicked (self,*args):
if self.about_dialog:
self.about_dialog.present ()
return 1
dialog = gtk.AboutDialog()
dialog.set_name (ttb_title)
dialog.set_version (ttb_version)
dialog.set_copyright ("Copyright 2004-2008 Dirk-Jan C. Binnema\n" +
"Released under the terms of " +
"the GNU General Public License (GPL), v3 or later");
dialog.set_comments ("A Teletekst Browser for Unix/Linux")
dialog.set_website ("http://www.djcbsoftware.nl/code/ttb")
dialog.set_logo_icon_name ('ttb')
dialog.set_transient_for (self.main_window)
# callbacks for destroying the dialog
def on_about_dialog_close(dialog, response, editor):
self.about_dialog = None
dialog.destroy()
def on_about_dialog_delete_event (dialog, event, editor):
self.about_dialog = None
return 1
dialog.connect("response", on_about_dialog_close, self)
dialog.connect("delete-event", on_about_dialog_delete_event, self)
self.about_dialog = dialog
self.about_dialog.show()
# show the help window
def on_button_help_clicked (self,*args):
self.help_dialog.show ()
return 1
def on_dialog_help_close(self, response, ptr):
self.help_dialog.hide()
def on_dialog_help_delete_event (self, event, ptr):
self.help_dialog.hide()
return 1
def on_image_button_press_event (self,*args):
if self.model.metainfo != None:
page = self.model.metainfo.get_page(
self.size.normalize(self.image_holder.get_pointer()))
if page != None:
self.goto_page(page)
def on_image_motion_notify_event (self,*args):
if self.model.metainfo != None:
gdk_win = self.image_holder.get_parent_window()
page = self.model.metainfo.get_page(
self.size.normalize(self.image_holder.get_pointer()))
if page != None:
gdk_win.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
else:
gdk_win.set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
def on_image_leave_notify_event (self,*args):
# restore the old cursor
parentwin = self.image_holder.get_parent_window()
parentwin.set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
# keybindings...
def on_window_main_key_press_event(self,widget,event,data=None):
shiftpressed = event.state & gtk.gdk.SHIFT_MASK
# pages, subpages
if event.keyval in [gtk.keysyms.Page_Up,gtk.keysyms.KP_Page_Up]:
if shiftpressed:
self.goto_neighbour_page (1,1) # previous subpage
else:
self.goto_neighbour_page(1,0) # previous page
return
elif event.keyval in [gtk.keysyms.Page_Down,gtk.keysyms.KP_Page_Down]:
if shiftpressed:
self.goto_neighbour_page(0,1) # next subpage
else:
self.goto_neighbour_page(0,0) # next page
return
# history
altpressed = event.state & gtk.gdk.MOD1_MASK
if event.keyval in [gtk.keysyms.Left,gtk.keysyms.KP_Left] and altpressed:
self.goto_page(self.model.history.backward(),0,0) # previous page in hist
elif event.keyval in [gtk.keysyms.Right,gtk.keysyms.KP_Right] and altpressed:
self.goto_page(self.model.history.forward(),0,0) # next page in hist
# home
if event.keyval in [gtk.keysyms.Home, gtk.keysyms.KP_Home]:
self.goto_page([100,1],0,0)
return
# exit
if event.keyval in [gtk.keysyms.Escape]:
self.on_exit()
return
# zoom in
if event.keyval in [ gtk.keysyms.plus, gtk.keysyms.KP_Add ]:
self.resize (self.size.BIGGER)
return
# zoom out
if event.keyval in [ gtk.keysyms.minus, gtk.keysyms.KP_Subtract ]:
self.resize (self.size.SMALLER)
return
# other keys
if event.keyval < 256:
key = chr(event.keyval).lower()
if key in ['q','x']: # exit the program
self.on_exit()
return
if key in ['r']: # refresh
self.refresh()
if key.isdigit() \
and not self.page_num_entry.is_focus() \
and not self.sub_page_num_entry.is_focus():
self.page_num_entry.grab_focus()
def on_exit (self,*args):
self.model.cleanup()
gtk.main_quit()
def fill_help_text_view (self, textview):
buf = textview.get_buffer
#
# MetaInfo parses the webpage corresponding to the teletekst page,
# 1) to gather the 'area=' information from the clickable
# GIF in the webpage, so we can have clickable pagenumbers as well
# 2) to check the page number for prev/next links (idea Job Ganzevoort)
#
class MetaInfo (HTMLParser):
# members to store info about prev/next pages and subpages
prev = None
next = None
next_sub = None
prev_sub = None
# get information on the neigbour page
# prev: get previous page? (bool)
# sub: get sub page? (bool)
def neighbour_page (self,page,prev=0,sub=0):
neighbour = None
if prev:
if sub:
neighbour = [page[0], self.prev_sub]
else:
neighbour = [self.prev, 1]
else:
if sub:
neighbour = [page[0], self.next_sub]
else:
neighbour = [self.next, 1]
if neighbour[0] == None or neighbour[1] == None:
return None
else:
return neighbour
# helper class to store clickability information
# about positions in our image
class Area:
def __init__ (self,nw,se,page):
self.nw = nw
self.se = se
self.page = page
def page():
return self.page
def match (self,coor):
return coor[0]>=self.nw[0] and coor[0]<=self.se[0] and \
coor[1]>=self.nw[1] and coor[1]<=self.se[1]
def __init__ (self,page):
HTMLParser.__init__(self)
self.page = page
self.in_the_map = 0
self.areas = []
self.neighbours = None
# return the page number if the cursor is in it, or None otherwise
def get_page (self,coor):
for area in self.areas:
if area.match (coor):
return area.page
return None
def handle_starttag(self, tag, attrs):
# handle the area info inside the map
if tag == 'map':
if attrs != None and attrs[0] == ('name',self.page):
self.in_the_map= 1
elif self.in_the_map and tag == 'area':
if attrs != None:
page = None
nw = None # north-west
se = None # south-east
for attr in attrs:
# get the coords attribute
if attr[0]=='coords':
coords=attr[1].split(',')
nw = (int(coords[0]),int(coords[1]))
se = (int(coords[2]),int(coords[3]))
# get the href attribute, and extract page / subpage
if attr[0]=='href':
pagestr=attr[1].replace('.html','').split('-')
page=[int(pagestr[0]),int(pagestr[1])]
if page != None and nw != None and se != None:
area = MetaInfo.Area (nw,se,page)
self.areas.append (area)
return
# handle the href info which will tell us what is
# the next/prev page and subpage
elif tag == 'a':
if attrs != None and attrs[0][0] == 'href':
self.href = attrs[0][1]
elif tag == 'img' and self.href != None:
for a in attrs:
if a[0] == 'src':
if a[1]=='/gfx/i-buttons/back.gif':
self.prev = int(self.href[0:3])
elif a[1]=='/gfx/i-buttons/sub_back.gif':
self.prev_sub = int(self.href[4:6])
elif a[1]=='/gfx/i-buttons/sub_forward.gif':
self.next_sub = int(self.href[4:6])
elif a[1]=='/gfx/i-buttons/forward.gif':
self.next = int(self.href[0:3])
def handle_endtag(self, tag):
if tag == 'map' and self.in_the_map:
self.in_the_map = 0
self.href = None
def dump(self):
for area in self.areas:
print str(area.page) + '=>' + str(area.nw) + "-" + str(area.se)
class Network:
def __init__ (self):
# install proxy support if http_host is set
proxy = os.getenv('http_proxy')
if proxy != None:
proxy_handler = urllib2.ProxyHandler({'http':proxy})
self.opener = urllib2.build_opener(proxy_handler)
else:
self.opener = urllib2.build_opener()
self.tempdir = self.get_tempdir ()
urllib2.install_opener(self.opener)
def __del__ (self):
if self.tempdir != None:
try:
for f in os.listdir (self.tempdir):
os.unlink (self.tempdir + '/' + f)
os.rmdir(self.tempdir)
except:
print 'failed to remove tmpdir: ' + self.tempdir
# get us a temp dir with fallback for old python
def get_tempdir (self):
try:
# this should work for python 2.3+
return tempfile.mkdtemp()
except:
# this is our ugly hack for old python
# if you are really unlucky, it will fail
print "old python"
random.seed()
tmp = tempfile.gettempdir() + "/" + str(random.random())
if os.access(tmp,os.F_OK):
return self.get_tempdir () # ugly
os.mkdir (tmp,0700)
return tmp
# do the network transfer
def http_get (self,url):
request = urllib2.Request (url)
request.add_header('User-Agent',ttb_user_agent);
request.add_header('Accept',
'text/xml,application/xml,application/xhtml+xml,' +
'text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
return self.opener.open(request).read()
# retrieve the page
def retrieve_page (self, page, nocache=0):
#pagename = str(page[0]) + "_" + ("0"+str(page[1]))[-2:]
pagename = str(page[0]) + "-" + ("0"+str(page[1]))[-2:]
localimg = self.tempdir + "/" + pagename + '.gif'
localhtml = self.tempdir + "/" + pagename + '.html'
# do we really need to retrieve it over the network?
retrieve_from_network = nocache \
or not os.access(localimg,os.F_OK) \
or time.time() - os.stat(localimg).st_mtime > ttb_cache_time
# download img if it's not in the cache
if retrieve_from_network:
# gif image to retrieve
#gif = 'http://www.rtl.nl/videotext/data/rtl4/gif/' + pagename + '.gif'
gif = 'http://teletekst.nos.nl/gif/images/' + pagename + '.gif'
try:
data = self.http_get (gif)
except:
raise TTBException("could not retrieve " + gif)
# save the gif to a tempfile
imgfile = open (localimg,'w')
imgfile.write (data)
imgfile.close()
# html to retrieve
# 'replace' or htmlparser won't like our html
html = 'http://teletekst.nos.nl/gif/' + pagename + '.html'
try:
html = self.http_get(html)
data = html.replace('<script','<!--').replace('</script>','-->')
except:
raise TTBException("could not retrieve " + html)
htmlfile = open (localhtml,'w')
htmlfile.write (data)
htmlfile.close()
else:
htmlfile = open (localhtml,'r')
data = htmlfile.read()
htmlfile.close()
metainfo = MetaInfo(pagename)
metainfo.feed (data)
return localimg, metainfo
def retrieve_error_page (self):
localerr = self.tempdir + '/notfound.gif'
if not os.access (localerr,os.F_OK):
errorgif = 'http://teletekst.nos.nl/images/page_na1.gif'
try:
data = self.http_get (errorgif)
except:
raise TTBException ("could not retrieve " + errorgif)
# save the gif to a tempfile
imgfile = open (localerr,'w')
imgfile.write (data)
imgfile.close()
return localerr
def get_data_dir ():
if os.environ.has_key("TTB_DATA"):
return os.environ["TTB_DATA"]
h,t = os.path.split(os.path.split(os.path.abspath(sys.argv[0]))[0])
if t == 'bin':
fp = os.path.join (h, 'share')
if os.path.isdir (fp):
return fp
raise TTBException("Could not find data directory")
def get_data_file (name):
datadir = get_data_dir ()
fp = os.path.join (datadir, name)
if os.path.isfile(fp):
return fp
raise TTBException("Could not find " + name)
def error_exit (msg):
dialog = gtk.MessageDialog(
flags = gtk.DIALOG_DESTROY_WITH_PARENT,
type = gtk.MESSAGE_ERROR,
buttons = gtk.BUTTONS_OK,
message_format = msg)
dialog.set_title("TTB Error")
dialog.run()
sys.exit(1)
def main (argv=None):
try:
if argv == None:
argv = sys.argv
mypage = 100
mysubpage = 1
if (argv != None):
if len(argv) > 1 and argv[1].isdigit():
mypage = int(argv[1])
if mypage < 100 or mypage > 999:
mypage = 100
if len(argv) > 2 and argv[2].isdigit():
mysubpage = int(argv[2])
if mysubpage < 1:
mysubpage = 1
page = [mypage, mysubpage]
glade = get_data_file (ttb_glade_data)
icon = get_data_file (ttb_icon_data)
TTB(glade, icon, (mypage,mysubpage))
except KeyboardInterrupt:
return 0
# note 'as' for the comma below does not work before python 2.6
except TTBException, ex:
error_exit (ex.msg)
return 0
# ttb: arise!
if __name__ == "__main__":
sys.exit(main(sys.argv))
# the end
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