def __init__(self, stdscr=None):
if Main.instance:
raise Exception("attempting to create a duplicate Main instance")
Main.instance = self
signal.signal(signal.SIGUSR2, self.debug_out)
# Let locale figure itself out
locale.setlocale(locale.LC_ALL, "")
enc = locale.getpreferredencoding()
# If we're canto-fetch, jump to that main function
if sys.argv[0].endswith("canto-fetch"):
canto_fetch.main(enc)
# Parse arguments that canto shares with canto-fetch, return
# a lot of file locations and an optlist that will contain the
# parsed, but yet unused canto specific arguments.
conf_dir, log_file, conf_file, feed_dir, script_dir, optlist = args.parse_common_args(
enc,
"hvulaor:t:i:n:",
["help", "version", "update", "list", "checkall", "opml", "import=", "url=", "checknew=", "tag="],
)
# Instantiate the config and start the log.
try:
self.cfg = get_cfg(conf_file, log_file, feed_dir, script_dir)
self.cfg.parse()
except:
traceback.print_exc()
upgrade_help()
sys.exit(-1)
self.cfg.log("Canto v %s (%s)" % ("%d.%d.%d" % VERSION_TUPLE, GIT_SHA), "w")
self.cfg.log("Time: %s" % time.asctime())
self.cfg.log("Config parsed successfully.")
# If we were passed an existing curses screen (i.e. restart)
# pass it through to the config.
self.cfg.stdscr = stdscr
if self.cfg.stdscr:
self.restarting = True
else:
self.restarting = False
self.restart = False
# Default arguments.
flags = 0
feed_ct = None
opml_file = None
url = None
newtag = None
# Note that every single flag that takes an argument has its
# argument converted to unicode. Saves a lot of bullshit later.
for opt, arg in optlist:
if opt in ["-u", "--update"]:
flags |= UPDATE_FIRST
elif opt in ["-n", "--checknew"]:
flags |= CHECK_NEW
feed_ct = unicode(arg, enc, "ignore")
elif opt in ["-a", "--checkall"]:
flags |= CHECK_NEW
elif opt in ["-l", "--list"]:
flags |= FEED_LIST
elif opt in ["-o", "--opml"]:
flags |= OUT_OPML
elif opt in ["-i", "--import"]:
flags |= IN_OPML
opml_file = unicode(arg, enc, "ignore")
elif opt in ["-r", "--url"]:
flags |= IN_URL
url = unicode(arg, enc, "ignore")
elif opt in ["-t", "--tag"]:
newtag = unicode(arg, enc, "ignore")
# Import flags harness the same functions as their config
# based counterparts, source_opml and source_url.
if flags & IN_OPML:
self.cfg.locals["source_opml"](opml_file, append=True)
print "OPML imported."
if flags & IN_URL:
self.cfg.locals["source_url"](url, append=True, tag=newtag)
print "URL added."
# All import options should terminate.
if flags & (IN_OPML + IN_URL):
sys.exit(0)
# If self.cfg had to generate a config, make sure we
# update first.
if self.cfg.no_conf:
self.cfg.log("Conf was auto-generated, adding -u")
flags |= UPDATE_FIRST
if flags & UPDATE_FIRST:
self.cfg.log("Pausing to update...")
canto_fetch.run(self.cfg, True, True)
# Detect if there are any new feeds by whether their
# set path exists. If not, run canto-fetch but don't
# force it, so canto-fetch intelligently updates.
for i, f in enumerate(self.cfg.feeds):
if not os.path.exists(f.path):
self.cfg.log("Detected unfetched feed: %s." % f.URL)
canto_fetch.run(self.cfg, True, False)
# Still no go?
if not os.path.exists(f.path):
self.cfg.log("Failed to fetch %s, removing" % f.URL)
self.cfg.feeds[i] = None
else:
self.cfg.log("Fetched.\n")
break
# Collapse the feed array, if we had to remove some unfetchables.
self.cfg.feeds = [f for f in self.cfg.feeds if f is not None]
self.new = []
self.old = []
self.ph = ProcessHandler(self.cfg)
# Force an update from disk by queueing a work item for each thread.
# At this point, we just want to do the portion of the update where the
# disk is read, so PROC_UPDATE is used.
self.cfg.log("Populating feeds...")
for f in self.cfg.feeds:
self.ph.send((PROC_UPDATE, f.URL, []))
for f in self.cfg.feeds:
f.merge(self.ph.recv()[1])
self.ph.send((PROC_GETTAGS,))
fixedtags = self.ph.recv()
self.ph.kill_process()
for i, f in enumerate(self.cfg.feeds):
self.cfg.feeds[i].tags = fixedtags[i]
# Now that the tags have all been straightened out, validate the config.
# Making sure the tags are unique before validation is important because
# part of validation is the actual creation of Tag() objects.
try:
self.cfg.validate()
except Exception, err:
print err
upgrade_help()
sys.exit(0)
def __init__(self, stdscr=None):
signal.signal(signal.SIGUSR2, self.debug_out)
# Let locale figure itself out
locale.setlocale(locale.LC_ALL, "")
enc = locale.getpreferredencoding()
# If we're canto-fetch, jump to that main function
if sys.argv[0].endswith("canto-fetch"):
canto_fetch.main(enc)
# Parse arguments that canto shares with canto-fetch, return
# a lot of file locations and an optlist that will contain the
# parsed, but yet unused canto specific arguments.
conf_dir, log_file, conf_file, feed_dir, script_dir, optlist =\
args.parse_common_args(enc,
"hvulaor:t:i:n:",
["help","version","update","list","checkall","opml",
"import=","url=","checknew=","tag="])
# Instantiate the config and start the log.
try:
self.cfg = get_cfg(conf_file, log_file, feed_dir, script_dir)
self.cfg.parse()
except:
traceback.print_exc()
upgrade_help()
sys.exit(-1)
self.cfg.log("Canto v %s (%s)" % \
("%d.%d.%d" % VERSION_TUPLE, GIT_SHA), "w")
self.cfg.log("Time: %s" % time.asctime())
self.cfg.log("Config parsed successfully.")
# If we were passed an existing curses screen (i.e. restart)
# pass it through to the config.
self.cfg.stdscr = stdscr
if self.cfg.stdscr:
self.restarting = True
else:
self.restarting = False
self.restart = False
# Default arguments.
flags = 0
feed_ct = None
opml_file = None
url = None
newtag = None
# Note that every single flag that takes an argument has its
# argument converted to unicode. Saves a lot of bullshit later.
for opt, arg in optlist:
if opt in ["-u", "--update"]:
flags |= UPDATE_FIRST
elif opt in ["-n", "--checknew"]:
flags |= CHECK_NEW
feed_ct = unicode(arg, enc, "ignore")
elif opt in ["-a", "--checkall"]:
flags |= CHECK_NEW
elif opt in ["-l", "--list"]:
flags |= FEED_LIST
elif opt in ["-o", "--opml"]:
flags |= OUT_OPML
elif opt in ["-i", "--import"]:
flags |= IN_OPML
opml_file = unicode(arg, enc, "ignore")
elif opt in ["-r", "--url"]:
flags |= IN_URL
url = unicode(arg, enc, "ignore")
elif opt in ["-t", "--tag"]:
newtag = unicode(arg, enc, "ignore")
# Import flags harness the same functions as their config
# based counterparts, source_opml and source_url.
if flags & IN_OPML:
self.cfg.locals['source_opml'](opml_file, append=True)
print "OPML imported."
if flags & IN_URL:
self.cfg.locals['source_url'](url, append=True, tag=newtag)
print "URL added."
# All import options should terminate.
if flags & (IN_OPML + IN_URL):
sys.exit(0)
# If self.cfg had to generate a config, make sure we
# update first.
if self.cfg.no_conf:
self.cfg.log("Conf was auto-generated, adding -u")
flags |= UPDATE_FIRST
if flags & UPDATE_FIRST:
self.cfg.log("Pausing to update...")
canto_fetch.run(self.cfg, True, True)
# Detect if there are any new feeds by whether their
# set path exists. If not, run canto-fetch but don't
# force it, so canto-fetch intelligently updates.
for i, f in enumerate(self.cfg.feeds):
if not os.path.exists(f.path):
self.cfg.log("Detected unfetched feed: %s." % f.URL)
canto_fetch.run(self.cfg, True, False)
#Still no go?
if not os.path.exists(f.path):
self.cfg.log("Failed to fetch %s, removing" % f.URL)
self.cfg.feeds[i] = None
else:
self.cfg.log("Fetched.\n")
break
# Collapse the feed array, if we had to remove some unfetchables.
self.cfg.feeds = filter(lambda x: x != None, self.cfg.feeds)
self.new = []
self.old = []
self.ph = ProcessHandler(self.cfg)
# Force an update from disk by queueing a work item for each thread.
# At this point, we just want to do the portion of the update where the
# disk is read, so PROC_UPDATE is used.
self.cfg.log("Populating feeds...")
for f in self.cfg.feeds:
self.ph.send((PROC_UPDATE, f.URL, []))
for f in self.cfg.feeds:
f.merge(self.ph.recv()[1])
self.ph.send((PROC_GETTAGS, ))
fixedtags = self.ph.recv()
self.ph.kill_process()
for i, f in enumerate(self.cfg.feeds):
self.cfg.feeds[i].tags = fixedtags[i]
# Now that the tags have all been straightened out, validate the config.
# Making sure the tags are unique before validation is important because
# part of validation is the actual creation of Tag() objects.
try:
self.cfg.validate()
except Exception, err:
print err
upgrade_help()
sys.exit(0)
class Main:
instance = None
def __init__(self, stdscr=None):
if Main.instance:
raise Exception("attempting to create a duplicate Main instance")
Main.instance = self
signal.signal(signal.SIGUSR2, self.debug_out)
# Let locale figure itself out
locale.setlocale(locale.LC_ALL, "")
enc = locale.getpreferredencoding()
# If we're canto-fetch, jump to that main function
if sys.argv[0].endswith("canto-fetch"):
canto_fetch.main(enc)
# Parse arguments that canto shares with canto-fetch, return
# a lot of file locations and an optlist that will contain the
# parsed, but yet unused canto specific arguments.
conf_dir, log_file, conf_file, feed_dir, script_dir, optlist = args.parse_common_args(
enc,
"hvulaor:t:i:n:",
["help", "version", "update", "list", "checkall", "opml", "import=", "url=", "checknew=", "tag="],
)
# Instantiate the config and start the log.
try:
self.cfg = get_cfg(conf_file, log_file, feed_dir, script_dir)
self.cfg.parse()
except:
traceback.print_exc()
upgrade_help()
sys.exit(-1)
self.cfg.log("Canto v %s (%s)" % ("%d.%d.%d" % VERSION_TUPLE, GIT_SHA), "w")
self.cfg.log("Time: %s" % time.asctime())
self.cfg.log("Config parsed successfully.")
# If we were passed an existing curses screen (i.e. restart)
# pass it through to the config.
self.cfg.stdscr = stdscr
if self.cfg.stdscr:
self.restarting = True
else:
self.restarting = False
self.restart = False
# Default arguments.
flags = 0
feed_ct = None
opml_file = None
url = None
newtag = None
# Note that every single flag that takes an argument has its
# argument converted to unicode. Saves a lot of bullshit later.
for opt, arg in optlist:
if opt in ["-u", "--update"]:
flags |= UPDATE_FIRST
elif opt in ["-n", "--checknew"]:
flags |= CHECK_NEW
feed_ct = unicode(arg, enc, "ignore")
elif opt in ["-a", "--checkall"]:
flags |= CHECK_NEW
elif opt in ["-l", "--list"]:
flags |= FEED_LIST
elif opt in ["-o", "--opml"]:
flags |= OUT_OPML
elif opt in ["-i", "--import"]:
flags |= IN_OPML
opml_file = unicode(arg, enc, "ignore")
elif opt in ["-r", "--url"]:
flags |= IN_URL
url = unicode(arg, enc, "ignore")
elif opt in ["-t", "--tag"]:
newtag = unicode(arg, enc, "ignore")
# Import flags harness the same functions as their config
# based counterparts, source_opml and source_url.
if flags & IN_OPML:
self.cfg.locals["source_opml"](opml_file, append=True)
print "OPML imported."
if flags & IN_URL:
self.cfg.locals["source_url"](url, append=True, tag=newtag)
print "URL added."
# All import options should terminate.
if flags & (IN_OPML + IN_URL):
sys.exit(0)
# If self.cfg had to generate a config, make sure we
# update first.
if self.cfg.no_conf:
self.cfg.log("Conf was auto-generated, adding -u")
flags |= UPDATE_FIRST
if flags & UPDATE_FIRST:
self.cfg.log("Pausing to update...")
canto_fetch.run(self.cfg, True, True)
# Detect if there are any new feeds by whether their
# set path exists. If not, run canto-fetch but don't
# force it, so canto-fetch intelligently updates.
for i, f in enumerate(self.cfg.feeds):
if not os.path.exists(f.path):
self.cfg.log("Detected unfetched feed: %s." % f.URL)
canto_fetch.run(self.cfg, True, False)
# Still no go?
if not os.path.exists(f.path):
self.cfg.log("Failed to fetch %s, removing" % f.URL)
self.cfg.feeds[i] = None
else:
self.cfg.log("Fetched.\n")
break
# Collapse the feed array, if we had to remove some unfetchables.
self.cfg.feeds = [f for f in self.cfg.feeds if f is not None]
self.new = []
self.old = []
self.ph = ProcessHandler(self.cfg)
# Force an update from disk by queueing a work item for each thread.
# At this point, we just want to do the portion of the update where the
# disk is read, so PROC_UPDATE is used.
self.cfg.log("Populating feeds...")
for f in self.cfg.feeds:
self.ph.send((PROC_UPDATE, f.URL, []))
for f in self.cfg.feeds:
f.merge(self.ph.recv()[1])
self.ph.send((PROC_GETTAGS,))
fixedtags = self.ph.recv()
self.ph.kill_process()
for i, f in enumerate(self.cfg.feeds):
self.cfg.feeds[i].tags = fixedtags[i]
# Now that the tags have all been straightened out, validate the config.
# Making sure the tags are unique before validation is important because
# part of validation is the actual creation of Tag() objects.
try:
self.cfg.validate()
except Exception, err:
print err
upgrade_help()
sys.exit(0)
# Print out a feed list
if flags & FEED_LIST:
for f in self.cfg.feeds:
print f.tags[0].encode(enc, "ignore")
sys.exit(0)
# This could probably be done better, or more officially
# with some XML library, but for now, print is working
# fairly well.
if flags & OUT_OPML:
self.cfg.log("Outputting OPML")
print """<opml version="1.0">"""
print """<body>"""
for feed in self.cfg.feeds:
ufp = feed.get_ufp()
if "atom" in ufp["version"]:
t = "pie"
else:
t = "rss"
print """\t<outline text="%s" xmlUrl="%s" type="%s" />""" % (
feed.tags[0].encode(enc, "ignore"),
feed.URL,
t,
)
print """</body>"""
print """</opml>"""
sys.exit(0)
# Handle -a/-n flags (print number of new items)
if flags & CHECK_NEW:
if not feed_ct:
unread = 0
for f in self.cfg.feeds:
for s in f:
if "read" not in s["canto_state"]:
unread += 1
print unread
else:
t = [f for f in self.cfg.feeds if f.tags[0] == feed_ct]
if not t:
print "Unknown Feed"
else:
print len([x for x in t[0] if "read" not in x["canto_state"]])
sys.exit(0)
# After this point, we know that all further operation is going to
# require all tags to be populated, we queue up the latter
# half of the work, to actually filter and sort the items.
# The reason we clear the feeds first is that only after validation do
# we know what keys are going to have to be precached, and canto tries
# hard to conserve items (see feed.merge), so we need to replace all of
# them with corrected, fresh items from the process that knows about the
# precache
for f in self.cfg.feeds:
del f[:]
signal.signal(signal.SIGCHLD, self.chld)
self.update(1, self.cfg.feeds, PROC_BOTH)
# At this point we know that we're going to actually launch
# the client, so we fire up ncurses and add the screen
# information to our Cfg().
if not self.restarting:
self.cfg.stdscr = curses.initscr()
self.cfg.stdscr.nodelay(1)
# curs_set can return ERR, we shouldn't care
try:
curses.curs_set(0)
except:
pass
# if any of these mess up though, the rest of the
# the operation is suspect, so die.
try:
curses.noecho()
curses.start_color()
curses.use_default_colors()
except:
self.cfg.log("Unable to init curses, bailing")
self.done()
self.sigusr = 0
self.resize = 0
self.alarmed = 0
self.ticks = 60
self.cfg.height, self.cfg.width = self.cfg.stdscr.getmaxyx()
# Init colors
try:
for i, (fg, bg) in enumerate(self.cfg.colors):
curses.init_pair(i + 1, fg, bg)
except:
self.cfg.log("Unable to init curses color pairs!")
self.cfg.log("Curses initialized.")
# Instantiate the base Gui class
self.gui = Gui(self.cfg, self.cfg.tags.cur())
self.cfg.log("GUI initialized.")
# Signal handling
signal.signal(signal.SIGWINCH, self.winch)
signal.signal(signal.SIGALRM, self.alarm)
signal.signal(signal.SIGINT, self.done)
signal.signal(signal.SIGUSR1, self.sigusr)
signal.alarm(1)
self.cfg.log("Signals set.")
self.estring = None
# The main loop is wrapped in one huge try...except so that no matter
# what exception is thrown, we can clean up curses and exit without
# s******g all over the terminal.
try:
# Initial draw of the screen, if not restarting
self.refresh(self.restarting)
self.restarting = False
# Main program loop, terminated when all handlers have
# deregistered / exited.
self.cfg.log("Beginning main loop.")
while 1:
# Clear the key
t = None
# Gui is none if a key returned EXIT
if not self.gui:
break
# If we've spawned a text-based process (i.e. elinks), then just
# pause and wait to be awakened by SIGCHLD
if self.cfg.wait_for_pid:
signal.pause()
# Tick when SIGALRM is received.
if self.alarmed:
self.alarmed = 0
self.tick()
# Deferred update from signal
if self.sigusr:
self.sigusr = 0
if "signal" in self.cfg.triggers:
self.update()
# Get the key
k = self.cfg.stdscr.getch()
# KEY_RESIZE is the only key not propagated, to
# keep users from rebinding it and crashing.
if k == curses.KEY_RESIZE or self.resize:
self.resize = 0
self.refresh()
continue
# No input, time to check on the worker.
if k == -1:
# Make sure we don't pin the CPU, so if there's no input and
# no waiting updates, sleep for awhile.
if not self.ph.pid:
time.sleep(1 / 60.0)
continue
r = self.ph.recv(True, 0.01)
if r:
feed = [f for f in self.cfg.feeds if f.URL == r[1]][0]
if r[0] == PROC_UPDATE:
old = []
for gf, tf, s, l in r[4]:
if not l:
old.append((gf, tf, s, l))
continue
for i, oldidx in enumerate(l):
l[i] = feed[oldidx]
old.append((gf, tf, s, l))
feed.merge(r[2])
new = []
for gf, tf, s, l in r[3]:
if not l:
new.append((gf, tf, s, None))
continue
for i, newidx in enumerate(l):
l[i] = (feed[newidx], newidx)
new.append((gf, tf, s, l))
self.gui.alarm(new, old)
self.gui.draw_elements()
feed.qd = False
continue
# Handle Meta pairs
elif k == 195:
k2 = self.cfg.stdscr.getch()
if k2 >= 64:
t = (k2 - 64, 1)
else:
t = (k, 0)
# Just a normal key-press
else:
t = (k, 0)
# Key resolves a keypress tuple into a list of actions
actions = self.gui.key(t)
# Actions are executed in order, and each return code
# is handled in order.
for a in actions:
r = self.gui.action(a)
if r == REFRESH_ALL:
self.refresh()
elif r == UPDATE:
self.update()
elif r in [REFILTER, RETAG]:
self.ph.flush()
self.update(1)
elif r == TFILTER:
# Tag filters shouldn't perform a full update, so we map
# the relevant tag to all of the feeds that include that
# tag and update them.
t = self.gui.sel["tag"]
ufds = [f for f in self.cfg.feeds if t.tag in f.tags]
t.clear()
self.update(1, ufds)
elif r == REDRAW_ALL:
self.gui.draw_elements()
elif r == RESTART:
self.restart = True
self.gui = None
elif r == EXIT:
self.gui = None
break
time.sleep(0.01)
except Exception:
self.estring = traceback.format_exc()
except KeyboardInterrupt:
pass
self.done()
class Main():
def __init__(self, stdscr=None):
signal.signal(signal.SIGUSR2, self.debug_out)
# Let locale figure itself out
locale.setlocale(locale.LC_ALL, "")
enc = locale.getpreferredencoding()
# If we're canto-fetch, jump to that main function
if sys.argv[0].endswith("canto-fetch"):
canto_fetch.main(enc)
# Parse arguments that canto shares with canto-fetch, return
# a lot of file locations and an optlist that will contain the
# parsed, but yet unused canto specific arguments.
conf_dir, log_file, conf_file, feed_dir, script_dir, optlist =\
args.parse_common_args(enc,
"hvulaor:t:i:n:",
["help","version","update","list","checkall","opml",
"import=","url=","checknew=","tag="])
# Instantiate the config and start the log.
try:
self.cfg = get_cfg(conf_file, log_file, feed_dir, script_dir)
self.cfg.parse()
except:
traceback.print_exc()
upgrade_help()
sys.exit(-1)
self.cfg.log("Canto v %s (%s)" % \
("%d.%d.%d" % VERSION_TUPLE, GIT_SHA), "w")
self.cfg.log("Time: %s" % time.asctime())
self.cfg.log("Config parsed successfully.")
# If we were passed an existing curses screen (i.e. restart)
# pass it through to the config.
self.cfg.stdscr = stdscr
if self.cfg.stdscr:
self.restarting = True
else:
self.restarting = False
self.restart = False
# Default arguments.
flags = 0
feed_ct = None
opml_file = None
url = None
newtag = None
# Note that every single flag that takes an argument has its
# argument converted to unicode. Saves a lot of bullshit later.
for opt, arg in optlist:
if opt in ["-u", "--update"]:
flags |= UPDATE_FIRST
elif opt in ["-n", "--checknew"]:
flags |= CHECK_NEW
feed_ct = unicode(arg, enc, "ignore")
elif opt in ["-a", "--checkall"]:
flags |= CHECK_NEW
elif opt in ["-l", "--list"]:
flags |= FEED_LIST
elif opt in ["-o", "--opml"]:
flags |= OUT_OPML
elif opt in ["-i", "--import"]:
flags |= IN_OPML
opml_file = unicode(arg, enc, "ignore")
elif opt in ["-r", "--url"]:
flags |= IN_URL
url = unicode(arg, enc, "ignore")
elif opt in ["-t", "--tag"]:
newtag = unicode(arg, enc, "ignore")
# Import flags harness the same functions as their config
# based counterparts, source_opml and source_url.
if flags & IN_OPML:
self.cfg.locals['source_opml'](opml_file, append=True)
print "OPML imported."
if flags & IN_URL:
self.cfg.locals['source_url'](url, append=True, tag=newtag)
print "URL added."
# All import options should terminate.
if flags & (IN_OPML + IN_URL):
sys.exit(0)
# If self.cfg had to generate a config, make sure we
# update first.
if self.cfg.no_conf:
self.cfg.log("Conf was auto-generated, adding -u")
flags |= UPDATE_FIRST
if flags & UPDATE_FIRST:
self.cfg.log("Pausing to update...")
canto_fetch.run(self.cfg, True, True)
# Detect if there are any new feeds by whether their
# set path exists. If not, run canto-fetch but don't
# force it, so canto-fetch intelligently updates.
for i, f in enumerate(self.cfg.feeds):
if not os.path.exists(f.path):
self.cfg.log("Detected unfetched feed: %s." % f.URL)
canto_fetch.run(self.cfg, True, False)
#Still no go?
if not os.path.exists(f.path):
self.cfg.log("Failed to fetch %s, removing" % f.URL)
self.cfg.feeds[i] = None
else:
self.cfg.log("Fetched.\n")
break
# Collapse the feed array, if we had to remove some unfetchables.
self.cfg.feeds = filter(lambda x: x != None, self.cfg.feeds)
self.new = []
self.old = []
self.ph = ProcessHandler(self.cfg)
# Force an update from disk by queueing a work item for each thread.
# At this point, we just want to do the portion of the update where the
# disk is read, so PROC_UPDATE is used.
self.cfg.log("Populating feeds...")
for f in self.cfg.feeds:
self.ph.send((PROC_UPDATE, f.URL, []))
for f in self.cfg.feeds:
f.merge(self.ph.recv()[1])
self.ph.send((PROC_GETTAGS, ))
fixedtags = self.ph.recv()
self.ph.kill_process()
for i, f in enumerate(self.cfg.feeds):
self.cfg.feeds[i].tags = fixedtags[i]
# Now that the tags have all been straightened out, validate the config.
# Making sure the tags are unique before validation is important because
# part of validation is the actual creation of Tag() objects.
try:
self.cfg.validate()
except Exception, err:
print err
upgrade_help()
sys.exit(0)
# Print out a feed list
if flags & FEED_LIST:
for f in self.cfg.feeds:
print f.tags[0].encode(enc, "ignore")
sys.exit(0)
# This could probably be done better, or more officially
# with some XML library, but for now, print is working
# fairly well.
if flags & OUT_OPML:
self.cfg.log("Outputting OPML")
print """<opml version="1.0">"""
print """<body>"""
for feed in self.cfg.feeds:
ufp = feed.get_ufp()
if "atom" in ufp["version"]:
t = "pie"
else:
t = "rss"
print """\t<outline text="%s" xmlUrl="%s" type="%s" />""" %\
(feed.tags[0].encode(enc, "ignore"), feed.URL, t)
print """</body>"""
print """</opml>"""
sys.exit(0)
# Handle -a/-n flags (print number of new items)
if flags & CHECK_NEW:
if not feed_ct:
unread = 0
for f in self.cfg.feeds:
for s in f:
if "read" not in s["canto_state"]:
unread += 1
print unread
else:
t = [f for f in self.cfg.feeds if f.tags[0] == feed_ct]
if not t:
print "Unknown Feed"
else:
print len([ x for x in t[0] if "read"\
not in x["canto_state"]])
sys.exit(0)
# After this point, we know that all further operation is going to
# require all tags to be populated, we queue up the latter
# half of the work, to actually filter and sort the items.
# The reason we clear the feeds first is that only after validation do
# we know what keys are going to have to be precached, and canto tries
# hard to conserve items (see feed.merge), so we need to replace all of
# them with corrected, fresh items from the process that knows about the
# precache
for f in self.cfg.feeds:
del f[:]
signal.signal(signal.SIGCHLD, self.chld)
self.update(1, self.cfg.feeds, PROC_BOTH)
# At this point we know that we're going to actually launch
# the client, so we fire up ncurses and add the screen
# information to our Cfg().
if not self.restarting:
self.cfg.stdscr = curses.initscr()
self.cfg.stdscr.nodelay(1)
# curs_set can return ERR, we shouldn't care
try:
curses.curs_set(0)
except:
pass
# if any of these mess up though, the rest of the
# the operation is suspect, so die.
try:
curses.noecho()
curses.start_color()
curses.use_default_colors()
except:
self.cfg.log("Unable to init curses, bailing")
self.done()
self.sigusr = 0
self.resize = 0
self.alarmed = 0
self.ticks = 60
self.cfg.height, self.cfg.width = self.cfg.stdscr.getmaxyx()
# Init colors
try:
for i, (fg, bg) in enumerate(self.cfg.colors):
curses.init_pair(i + 1, fg, bg)
except:
self.cfg.log("Unable to init curses color pairs!")
self.cfg.log("Curses initialized.")
# Instantiate the base Gui class
self.gui = Gui(self.cfg, self.cfg.tags.cur())
self.cfg.log("GUI initialized.")
# Signal handling
signal.signal(signal.SIGWINCH, self.winch)
signal.signal(signal.SIGALRM, self.alarm)
signal.signal(signal.SIGINT, self.done)
signal.signal(signal.SIGUSR1, self.sigusr)
signal.alarm(1)
self.cfg.log("Signals set.")
self.estring = None
# The main loop is wrapped in one huge try...except so that no matter
# what exception is thrown, we can clean up curses and exit without
# s******g all over the terminal.
try:
# Initial draw of the screen, if not restarting
self.refresh(self.restarting)
self.restarting = False
# Main program loop, terminated when all handlers have
# deregistered / exited.
self.cfg.log("Beginning main loop.")
while 1:
# Clear the key
t = None
# Gui is none if a key returned EXIT
if not self.gui:
break
# If we've spawned a text-based process (i.e. elinks), then just
# pause and wait to be awakened by SIGCHLD
if self.cfg.wait_for_pid:
signal.pause()
# Tick when SIGALRM is received.
if self.alarmed:
self.alarmed = 0
self.tick()
# Deferred update from signal
if self.sigusr:
self.sigusr = 0
if "signal" in self.cfg.triggers:
self.update()
# Get the key
k = self.cfg.stdscr.getch()
# KEY_RESIZE is the only key not propagated, to
# keep users from rebinding it and crashing.
if k == curses.KEY_RESIZE or self.resize:
self.resize = 0
self.refresh()
continue
# No input, time to check on the worker.
if k == -1:
# Make sure we don't pin the CPU, so if there's no input and
# no waiting updates, sleep for awhile.
if not self.ph.pid:
time.sleep(0.01)
continue
r = self.ph.recv(True, 0.01)
if r:
feed = [f for f in self.cfg.feeds if f.URL == r[1]][0]
if r[0] == PROC_UPDATE:
old = []
for gf, tf, s, l in r[4]:
if not l:
old.append((gf, tf, s, l))
continue
for i, oldidx in enumerate(l):
l[i] = feed[oldidx]
old.append((gf, tf, s, l))
feed.merge(r[2])
new = []
for gf, tf, s, l in r[3]:
if not l:
new.append((gf, tf, s, None))
continue
for i, newidx in enumerate(l):
l[i] = (feed[newidx], newidx)
new.append((gf, tf, s, l))
self.gui.alarm(new, old)
self.gui.draw_elements()
feed.qd = False
continue
# Handle Meta pairs
elif k == 195:
k2 = self.cfg.stdscr.getch()
if k2 >= 64:
t = (k2 - 64, 1)
else:
t = (k, 0)
# Just a normal key-press
else:
t = (k, 0)
# Key resolves a keypress tuple into a list of actions
actions = self.gui.key(t)
# Actions are executed in order, and each return code
# is handled in order.
for a in actions:
r = self.gui.action(a)
if r == REFRESH_ALL:
self.refresh()
elif r == UPDATE:
self.update()
elif r in [REFILTER, RETAG]:
self.ph.flush()
self.update(1)
elif r == TFILTER:
# Tag filters shouldn't perform a full update, so we map
# the relevant tag to all of the feeds that include that
# tag and update them.
t = self.gui.sel["tag"]
ufds = [ f for f in self.cfg.feeds\
if t.tag in f.tags]
t.clear()
self.update(1, ufds)
elif r == REDRAW_ALL:
self.gui.draw_elements()
elif r == RESTART:
self.restart = True
self.gui = None
elif r == EXIT:
self.gui = None
break
except Exception:
self.estring = traceback.format_exc()
except KeyboardInterrupt:
pass
self.done()
