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### jack_term: terminal specific stuff for
### jack - extract audio from a CD and encode it using 3rd party software
### Copyright (C) 1999-2002 Arne Zellentin <zarne@users.sf.net>
### 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 2 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
# terminal is one of dumb, curses
import array
import traceback
import fcntl
import sys
import jack_ripstuff
import jack_freedb
from jack_globals import *
# exported functions:
#init
#enable
#disable
# expected functions in tmod:
#update
#getkey
#sig_winch_handler
# exported variables:
enabled = None
initialized = None
size_x, size_y = None, None
orig_size_x, orig_size_y = None, None
term_type = None
sig_winch_cache = None
# variables
xtermset = None
can_getsize = None
geom_changed = None
def init(arg_type="auto", arg_xtermset = 0):
global initialized
global geom_changed
global tmod
global xtermset
global term_type
global size_x, size_y
global orig_size_x, orig_size_y
size_x, size_y = None, None
if initialized:
return
# import the terminal specific module
if arg_type == "auto":
try:
import jack_t_curses as tmod
term_type = "curses"
except:
import jack_t_dumb as tmod
term_type = "dump"
elif arg_type == "dumb":
import jack_t_dumb as tmod
term_type = "dump"
elif arg_type == "curses":
import jack_t_curses as tmod
term_type = "curses"
if not tmod:
error("invalid terminal type `%s'" % term_type)
xtermset = arg_xtermset
initialized = 1
geom_changed = 0
size_x, size_y = 80, 24 # fallback value
oldsize = getsize()
if oldsize != (None, None):
orig_size_x, orig_size_y = oldsize
size_x, size_y = oldsize
del oldsize
def xtermset_enable():
global xtermset
global geom_changed
if xtermset:
import os
want_x = 80 - len("track_00") + jack_ripstuff.max_name_len
want_y = len(jack_ripstuff.all_tracks_todo_sorted) + 3
if term_type == "curses":
want_y = want_y - 1
if jack_freedb.names_available:
want_y = want_y + 1
want_y = max(want_y, 7)
if (size_x, size_y) != (want_x, want_y):
try:
os.system("xtermset -geom %dx%d" % (want_x, want_y))
geom_changed = 1
resize()
except:
warning("failed to call xtermset, is it really installed?")
xtermset = 0
del want_x, want_y
def xtermset_disable():
import os
global geom_changed
if xtermset and geom_changed:
try:
os.system("xtermset -restore -geom %dx%d" % (orig_size_x, orig_size_y))
geom_changed = 0
except:
pass
def getsize():
global can_getsize
if can_getsize == 0:
return None, None
if can_getsize == None:
try:
from IOCTLS import TIOCGWINSZ
except ImportError:
try:
from termios import TIOCGWINSZ
except ImportError:
# TIOCGWINSZ = 0x5413 # linux, ix86. Anyone else?
can_getsize = 0
warning("""could not find a module which exports
TIOCGWINSZ. This means I can't determine your terminal's geometry, so please
don't resize it. Use Tools/scripts/h2py.py from the Python source distribution
to convert /usr/include/asm/ioctls.h to IOCTLS.py and install it.""")
return None, None
try:
# to get the size, we will have to do an ioctl which will return a
# struct winsize {
# unsigned short ws_row;
# unsigned short ws_col;
# unsigned short ws_xpixel;
# unsigned short ws_ypixel;
# };
# (according to _I386_TERMIOS_H, /usr/include/asm/termios.h)
winsize = array.array("H")
data = " " * (winsize.itemsize * 4)
data = fcntl.ioctl(sys.stdout.fileno(), TIOCGWINSZ, data)
# unpack the data, I hope this is portable:
winsize.fromstring(data)
new_y, new_x, xpixel, ypixel = winsize.tolist()
except:
can_getsize = 0
return None, None
return new_x, new_y
def resize():
global size_x, size_y
x, y = getsize()
if (x, y) != (None, None):
size_x, size_y = x, y
def enable():
global enabled
if not initialized:
return
if enabled:
return
xtermset_enable()
tmod.enable()
enabled = 1
def disable():
global enabled
import os
if not enabled or not initialized:
return
tmod.disable()
xtermset_disable()
enabled = 0
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