mirror of https://gitlab.com/ita1024/waf.git
149 lines
3.0 KiB
Python
149 lines
3.0 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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# Matthias Jahn 2006
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# rewritten by Thomas Nagy 2009
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"""
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Start a new build as soon as something changes in the build directory.
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PyInotify, Fam, Gamin or time-threshold are used for the detection
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For now only PyInotify and time threshold are supported
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Watching for new svn revisions could be added too
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"""
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import select, errno, os, time
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from waflib import Utils, Scripting, Logs, Build, Node, Context, Options
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w_pyinotify = w_fam = w_gamin = None
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def check_support():
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global w_pyinotify, w_fam, w_gamin
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try:
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import pyinotify as w_pyinotify
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except ImportError:
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w_pyinotify = None
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else:
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try:
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wm = w_pyinotify.WatchManager()
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wm = w_pyinotify.Notifier(wm)
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wm = None
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except:
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raise
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w_pyinotify = None
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try:
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import gamin as w_gamin
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except ImportError:
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w_gamin = None
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else:
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try:
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test = w_gamin.WatchMonitor()
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test.disconnect()
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test = None
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except:
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w_gamin = None
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try:
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import _fam as w_fam
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except ImportError:
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w_fam = None
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else:
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try:
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test = w_fam.open()
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test.close()
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test = None
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except:
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w_fam = None
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def daemon(ctx):
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"""waf command: rebuild as soon as something changes"""
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bld = None
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while True:
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bld = Context.create_context('build')
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try:
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bld.options = Options.options
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bld.cmd = 'build'
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bld.execute()
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except ctx.errors.WafError as e:
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print(e)
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except KeyboardInterrupt:
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Utils.pprint('RED', 'interrupted')
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break
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try:
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x = ctx.state
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except AttributeError:
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setattr(ctx, 'state', DirWatch())
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x = ctx.state
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x.wait(bld)
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def options(opt):
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"""So this shows how to add new commands from tools"""
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Context.g_module.__dict__['daemon'] = daemon
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class DirWatch(object):
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def __init__(self):
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check_support()
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if w_pyinotify:
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self.sup = 'pyinotify'
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elif w_gamin:
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self.sup = 'gamin'
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elif w_fam:
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self.sup = 'fam'
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else:
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self.sup = 'dumb'
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#self.sup = 'dumb'
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def wait(self, bld):
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return getattr(self.__class__, 'wait_' + self.sup)(self, bld)
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def enumerate(self, node):
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if os.path.exists(node.abspath()):
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yield node.abspath()
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try:
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for x in node.children.values():
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for k in self.enumerate(x):
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yield k
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except AttributeError:
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pass
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def wait_pyinotify(self, bld):
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class PE(w_pyinotify.ProcessEvent):
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def stop(self, event):
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self.notif.ev = True
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self.notif.stop()
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raise ValueError("stop for delete")
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process_IN_DELETE = stop
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process_IN_CLOSE = stop
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process_default = stop
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proc = PE()
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wm = w_pyinotify.WatchManager()
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notif = w_pyinotify.Notifier(wm, proc)
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proc.notif = notif
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# well, we should add all the folders to watch here
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for x in self.enumerate(bld.srcnode):
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wm.add_watch(x, w_pyinotify.IN_DELETE | w_pyinotify.IN_CLOSE_WRITE)
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try:
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# pyinotify uses an infinite loop ... not too nice, so we have to use an exception
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notif.loop()
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except ValueError:
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pass
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if not hasattr(notif, 'ev'):
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raise KeyboardInterrupt
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def wait_dumb(self, bld):
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time.sleep(5)
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def wait_gamin(self, bld):
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time.sleep(5)
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def wait_fam(self, bld):
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time.sleep(5)
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