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source: waflib/Build.py @ 904702d

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+

Last change on this file since 904702d was 904702d, checked in by Paul Brossier <piem@piem.org>, 9 years ago
waf, waflib: update to 1.8.7
Property mode set to `100644`
File size: 20.7 KB

Line
1	#! /usr/bin/env python
2	# encoding: utf-8
3	# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
4
5	import os,sys,errno,re,shutil,stat
6	try:
7	import cPickle
8	except ImportError:
9	import pickle as cPickle
10	from waflib import Runner,TaskGen,Utils,ConfigSet,Task,Logs,Options,Context,Errors
11	import waflib.Node
12	CACHE_DIR='c4che'
13	CACHE_SUFFIX='_cache.py'
14	INSTALL=1337
15	UNINSTALL=-1337
16	SAVED_ATTRS='root node_deps raw_deps task_sigs'.split()
17	CFG_FILES='cfg_files'
18	POST_AT_ONCE=0
19	POST_LAZY=1
20	POST_BOTH=2
21	class BuildContext(Context.Context):
22	'''executes the build'''
23	cmd='build'
24	variant=''
25	def __init__(self,**kw):
26	super(BuildContext,self).__init__(**kw)
27	self.is_install=0
28	self.top_dir=kw.get('top_dir',Context.top_dir)
29	self.run_dir=kw.get('run_dir',Context.run_dir)
30	self.post_mode=POST_AT_ONCE
31	self.out_dir=kw.get('out_dir',Context.out_dir)
32	self.cache_dir=kw.get('cache_dir',None)
33	if not self.cache_dir:
34	self.cache_dir=os.path.join(self.out_dir,CACHE_DIR)
35	self.all_envs={}
36	self.task_sigs={}
37	self.node_deps={}
38	self.raw_deps={}
39	self.cache_dir_contents={}
40	self.task_gen_cache_names={}
41	self.launch_dir=Context.launch_dir
42	self.jobs=Options.options.jobs
43	self.targets=Options.options.targets
44	self.keep=Options.options.keep
45	self.progress_bar=Options.options.progress_bar
46	self.deps_man=Utils.defaultdict(list)
47	self.current_group=0
48	self.groups=[]
49	self.group_names={}
50	def get_variant_dir(self):
51	if not self.variant:
52	return self.out_dir
53	return os.path.join(self.out_dir,self.variant)
54	variant_dir=property(get_variant_dir,None)
55	def __call__(self,k,*kw):
56	kw['bld']=self
57	ret=TaskGen.task_gen(k,*kw)
58	self.task_gen_cache_names={}
59	self.add_to_group(ret,group=kw.get('group',None))
60	return ret
61	def rule(self,k,*kw):
62	def f(rule):
63	ret=self(k,*kw)
64	ret.rule=rule
65	return ret
66	return f
67	def __copy__(self):
68	raise Errors.WafError('build contexts are not supposed to be copied')
69	def install_files(self,k,*kw):
70	pass
71	def install_as(self,k,*kw):
72	pass
73	def symlink_as(self,k,*kw):
74	pass
75	def load_envs(self):
76	node=self.root.find_node(self.cache_dir)
77	if not node:
78	raise Errors.WafError('The project was not configured: run "waf configure" first!')
79	lst=node.ant_glob('*/%s'%CACHE_SUFFIX,quiet=True)
80	if not lst:
81	raise Errors.WafError('The cache directory is empty: reconfigure the project')
82	for x in lst:
83	name=x.path_from(node).replace(CACHE_SUFFIX,'').replace('\\','/')
84	env=ConfigSet.ConfigSet(x.abspath())
85	self.all_envs[name]=env
86	for f in env[CFG_FILES]:
87	newnode=self.root.find_resource(f)
88	try:
89	h=Utils.h_file(newnode.abspath())
90	except(IOError,AttributeError):
91	Logs.error('cannot find %r'%f)
92	h=Utils.SIG_NIL
93	newnode.sig=h
94	def init_dirs(self):
95	if not(os.path.isabs(self.top_dir)and os.path.isabs(self.out_dir)):
96	raise Errors.WafError('The project was not configured: run "waf configure" first!')
97	self.path=self.srcnode=self.root.find_dir(self.top_dir)
98	self.bldnode=self.root.make_node(self.variant_dir)
99	self.bldnode.mkdir()
100	def execute(self):
101	self.restore()
102	if not self.all_envs:
103	self.load_envs()
104	self.execute_build()
105	def execute_build(self):
106	Logs.info("Waf: Entering directory `%s'"%self.variant_dir)
107	self.recurse([self.run_dir])
108	self.pre_build()
109	self.timer=Utils.Timer()
110	try:
111	self.compile()
112	finally:
113	if self.progress_bar==1 and sys.stderr.isatty():
114	c=len(self.returned_tasks)or 1
115	m=self.progress_line(c,c,Logs.colors.BLUE,Logs.colors.NORMAL)
116	Logs.info(m,extra={'stream':sys.stderr,'c1':Logs.colors.cursor_off,'c2':Logs.colors.cursor_on})
117	Logs.info("Waf: Leaving directory `%s'"%self.variant_dir)
118	self.post_build()
119	def restore(self):
120	try:
121	env=ConfigSet.ConfigSet(os.path.join(self.cache_dir,'build.config.py'))
122	except EnvironmentError:
123	pass
124	else:
125	if env['version']<Context.HEXVERSION:
126	raise Errors.WafError('Version mismatch! reconfigure the project')
127	for t in env['tools']:
128	self.setup(**t)
129	dbfn=os.path.join(self.variant_dir,Context.DBFILE)
130	try:
131	data=Utils.readf(dbfn,'rb')
132	except(IOError,EOFError):
133	Logs.debug('build: Could not load the build cache %s (missing)'%dbfn)
134	else:
135	try:
136	waflib.Node.pickle_lock.acquire()
137	waflib.Node.Nod3=self.node_class
138	try:
139	data=cPickle.loads(data)
140	except Exception ,e:
141	Logs.debug('build: Could not pickle the build cache %s: %r'%(dbfn,e))
142	else:
143	for x in SAVED_ATTRS:
144	setattr(self,x,data[x])
145	finally:
146	waflib.Node.pickle_lock.release()
147	self.init_dirs()
148	def store(self):
149	data={}
150	for x in SAVED_ATTRS:
151	data[x]=getattr(self,x)
152	db=os.path.join(self.variant_dir,Context.DBFILE)
153	try:
154	waflib.Node.pickle_lock.acquire()
155	waflib.Node.Nod3=self.node_class
156	x=cPickle.dumps(data,-1)
157	finally:
158	waflib.Node.pickle_lock.release()
159	Utils.writef(db+'.tmp',x,m='wb')
160	try:
161	st=os.stat(db)
162	os.remove(db)
163	if not Utils.is_win32:
164	os.chown(db+'.tmp',st.st_uid,st.st_gid)
165	except(AttributeError,OSError):
166	pass
167	os.rename(db+'.tmp',db)
168	def compile(self):
169	Logs.debug('build: compile()')
170	self.producer=Runner.Parallel(self,self.jobs)
171	self.producer.biter=self.get_build_iterator()
172	self.returned_tasks=[]
173	try:
174	self.producer.start()
175	except KeyboardInterrupt:
176	self.store()
177	raise
178	else:
179	if self.producer.dirty:
180	self.store()
181	if self.producer.error:
182	raise Errors.BuildError(self.producer.error)
183	def setup(self,tool,tooldir=None,funs=None):
184	if isinstance(tool,list):
185	for i in tool:self.setup(i,tooldir)
186	return
187	module=Context.load_tool(tool,tooldir)
188	if hasattr(module,"setup"):module.setup(self)
189	def get_env(self):
190	try:
191	return self.all_envs[self.variant]
192	except KeyError:
193	return self.all_envs['']
194	def set_env(self,val):
195	self.all_envs[self.variant]=val
196	env=property(get_env,set_env)
197	def add_manual_dependency(self,path,value):
198	if path is None:
199	raise ValueError('Invalid input')
200	if isinstance(path,waflib.Node.Node):
201	node=path
202	elif os.path.isabs(path):
203	node=self.root.find_resource(path)
204	else:
205	node=self.path.find_resource(path)
206	if isinstance(value,list):
207	self.deps_man[id(node)].extend(value)
208	else:
209	self.deps_man[id(node)].append(value)
210	def launch_node(self):
211	try:
212	return self.p_ln
213	except AttributeError:
214	self.p_ln=self.root.find_dir(self.launch_dir)
215	return self.p_ln
216	def hash_env_vars(self,env,vars_lst):
217	if not env.table:
218	env=env.parent
219	if not env:
220	return Utils.SIG_NIL
221	idx=str(id(env))+str(vars_lst)
222	try:
223	cache=self.cache_env
224	except AttributeError:
225	cache=self.cache_env={}
226	else:
227	try:
228	return self.cache_env[idx]
229	except KeyError:
230	pass
231	lst=[env[a]for a in vars_lst]
232	ret=Utils.h_list(lst)
233	Logs.debug('envhash: %s %r',Utils.to_hex(ret),lst)
234	cache[idx]=ret
235	return ret
236	def get_tgen_by_name(self,name):
237	cache=self.task_gen_cache_names
238	if not cache:
239	for g in self.groups:
240	for tg in g:
241	try:
242	cache[tg.name]=tg
243	except AttributeError:
244	pass
245	try:
246	return cache[name]
247	except KeyError:
248	raise Errors.WafError('Could not find a task generator for the name %r'%name)
249	def progress_line(self,state,total,col1,col2):
250	if not sys.stderr.isatty():
251	return''
252	n=len(str(total))
253	Utils.rot_idx+=1
254	ind=Utils.rot_chr[Utils.rot_idx%4]
255	pc=(100.*state)/total
256	eta=str(self.timer)
257	fs="[%%%dd/%%%dd][%%s%%2d%%%%%%s][%s]["%(n,n,ind)
258	left=fs%(state,total,col1,pc,col2)
259	right='][%s%s%s]'%(col1,eta,col2)
260	cols=Logs.get_term_cols()-len(left)-len(right)+2len(col1)+2len(col2)
261	if cols<7:cols=7
262	ratio=((cols*state)//total)-1
263	bar=('='*ratio+'>').ljust(cols)
264	msg=Logs.indicator%(left,bar,right)
265	return msg
266	def declare_chain(self,k,*kw):
267	return TaskGen.declare_chain(k,*kw)
268	def pre_build(self):
269	for m in getattr(self,'pre_funs',[]):
270	m(self)
271	def post_build(self):
272	for m in getattr(self,'post_funs',[]):
273	m(self)
274	def add_pre_fun(self,meth):
275	try:
276	self.pre_funs.append(meth)
277	except AttributeError:
278	self.pre_funs=[meth]
279	def add_post_fun(self,meth):
280	try:
281	self.post_funs.append(meth)
282	except AttributeError:
283	self.post_funs=[meth]
284	def get_group(self,x):
285	if not self.groups:
286	self.add_group()
287	if x is None:
288	return self.groups[self.current_group]
289	if x in self.group_names:
290	return self.group_names[x]
291	return self.groups[x]
292	def add_to_group(self,tgen,group=None):
293	assert(isinstance(tgen,TaskGen.task_gen)or isinstance(tgen,Task.TaskBase))
294	tgen.bld=self
295	self.get_group(group).append(tgen)
296	def get_group_name(self,g):
297	if not isinstance(g,list):
298	g=self.groups[g]
299	for x in self.group_names:
300	if id(self.group_names[x])==id(g):
301	return x
302	return''
303	def get_group_idx(self,tg):
304	se=id(tg)
305	for i in range(len(self.groups)):
306	for t in self.groups[i]:
307	if id(t)==se:
308	return i
309	return None
310	def add_group(self,name=None,move=True):
311	if name and name in self.group_names:
312	Logs.error('add_group: name %s already present'%name)
313	g=[]
314	self.group_names[name]=g
315	self.groups.append(g)
316	if move:
317	self.current_group=len(self.groups)-1
318	def set_group(self,idx):
319	if isinstance(idx,str):
320	g=self.group_names[idx]
321	for i in range(len(self.groups)):
322	if id(g)==id(self.groups[i]):
323	self.current_group=i
324	break
325	else:
326	self.current_group=idx
327	def total(self):
328	total=0
329	for group in self.groups:
330	for tg in group:
331	try:
332	total+=len(tg.tasks)
333	except AttributeError:
334	total+=1
335	return total
336	def get_targets(self):
337	to_post=[]
338	min_grp=0
339	for name in self.targets.split(','):
340	tg=self.get_tgen_by_name(name)
341	if not tg:
342	raise Errors.WafError('target %r does not exist'%name)
343	m=self.get_group_idx(tg)
344	if m>min_grp:
345	min_grp=m
346	to_post=[tg]
347	elif m==min_grp:
348	to_post.append(tg)
349	return(min_grp,to_post)
350	def get_all_task_gen(self):
351	lst=[]
352	for g in self.groups:
353	lst.extend(g)
354	return lst
355	def post_group(self):
356	if self.targets=='*':
357	for tg in self.groups[self.cur]:
358	try:
359	f=tg.post
360	except AttributeError:
361	pass
362	else:
363	f()
364	elif self.targets:
365	if self.cur<self._min_grp:
366	for tg in self.groups[self.cur]:
367	try:
368	f=tg.post
369	except AttributeError:
370	pass
371	else:
372	f()
373	else:
374	for tg in self._exact_tg:
375	tg.post()
376	else:
377	ln=self.launch_node()
378	if ln.is_child_of(self.bldnode):
379	Logs.warn('Building from the build directory, forcing --targets=*')
380	ln=self.srcnode
381	elif not ln.is_child_of(self.srcnode):
382	Logs.warn('CWD %s is not under %s, forcing --targets=* (run distclean?)'%(ln.abspath(),self.srcnode.abspath()))
383	ln=self.srcnode
384	for tg in self.groups[self.cur]:
385	try:
386	f=tg.post
387	except AttributeError:
388	pass
389	else:
390	if tg.path.is_child_of(ln):
391	f()
392	def get_tasks_group(self,idx):
393	tasks=[]
394	for tg in self.groups[idx]:
395	try:
396	tasks.extend(tg.tasks)
397	except AttributeError:
398	tasks.append(tg)
399	return tasks
400	def get_build_iterator(self):
401	self.cur=0
402	if self.targets and self.targets!='*':
403	(self._min_grp,self._exact_tg)=self.get_targets()
404	global lazy_post
405	if self.post_mode!=POST_LAZY:
406	while self.cur<len(self.groups):
407	self.post_group()
408	self.cur+=1
409	self.cur=0
410	while self.cur<len(self.groups):
411	if self.post_mode!=POST_AT_ONCE:
412	self.post_group()
413	tasks=self.get_tasks_group(self.cur)
414	Task.set_file_constraints(tasks)
415	Task.set_precedence_constraints(tasks)
416	self.cur_tasks=tasks
417	self.cur+=1
418	if not tasks:
419	continue
420	yield tasks
421	while 1:
422	yield[]
423	class inst(Task.Task):
424	color='CYAN'
425	def uid(self):
426	lst=[self.dest,self.path]+self.source
427	return Utils.h_list(repr(lst))
428	def post(self):
429	buf=[]
430	for x in self.source:
431	if isinstance(x,waflib.Node.Node):
432	y=x
433	else:
434	y=self.path.find_resource(x)
435	if not y:
436	if Logs.verbose:
437	Logs.warn('Could not find %s immediately (may cause broken builds)'%x)
438	idx=self.generator.bld.get_group_idx(self)
439	for tg in self.generator.bld.groups[idx]:
440	if not isinstance(tg,inst)and id(tg)!=id(self):
441	tg.post()
442	y=self.path.find_resource(x)
443	if y:
444	break
445	else:
446	raise Errors.WafError('Could not find %r in %r'%(x,self.path))
447	buf.append(y)
448	self.inputs=buf
449	def runnable_status(self):
450	ret=super(inst,self).runnable_status()
451	if ret==Task.SKIP_ME:
452	return Task.RUN_ME
453	return ret
454	def __str__(self):
455	return''
456	def run(self):
457	return self.generator.exec_task()
458	def get_install_path(self,destdir=True):
459	dest=Utils.subst_vars(self.dest,self.env)
460	dest=dest.replace('/',os.sep)
461	if destdir and Options.options.destdir:
462	dest=os.path.join(Options.options.destdir,os.path.splitdrive(dest)[1].lstrip(os.sep))
463	return dest
464	def exec_install_files(self):
465	destpath=self.get_install_path()
466	if not destpath:
467	raise Errors.WafError('unknown installation path %r'%self.generator)
468	for x,y in zip(self.source,self.inputs):
469	if self.relative_trick:
470	destfile=os.path.join(destpath,y.path_from(self.path))
471	else:
472	destfile=os.path.join(destpath,y.name)
473	self.generator.bld.do_install(y.abspath(),destfile,chmod=self.chmod,tsk=self)
474	def exec_install_as(self):
475	destfile=self.get_install_path()
476	self.generator.bld.do_install(self.inputs[0].abspath(),destfile,chmod=self.chmod,tsk=self)
477	def exec_symlink_as(self):
478	destfile=self.get_install_path()
479	src=self.link
480	if self.relative_trick:
481	src=os.path.relpath(src,os.path.dirname(destfile))
482	self.generator.bld.do_link(src,destfile,tsk=self)
483	class InstallContext(BuildContext):
484	'''installs the targets on the system'''
485	cmd='install'
486	def __init__(self,**kw):
487	super(InstallContext,self).__init__(**kw)
488	self.uninstall=[]
489	self.is_install=INSTALL
490	def copy_fun(self,src,tgt,**kw):
491	if Utils.is_win32 and len(tgt)>259 and not tgt.startswith('\\\\?\\'):
492	tgt='\\\\?\\'+tgt
493	shutil.copy2(src,tgt)
494	os.chmod(tgt,kw.get('chmod',Utils.O644))
495	def do_install(self,src,tgt,**kw):
496	d,_=os.path.split(tgt)
497	if not d:
498	raise Errors.WafError('Invalid installation given %r->%r'%(src,tgt))
499	Utils.check_dir(d)
500	srclbl=src.replace(self.srcnode.abspath()+os.sep,'')
501	if not Options.options.force:
502	try:
503	st1=os.stat(tgt)
504	st2=os.stat(src)
505	except OSError:
506	pass
507	else:
508	if st1.st_mtime+2>=st2.st_mtime and st1.st_size==st2.st_size:
509	if not self.progress_bar:
510	Logs.info('- install %s (from %s)'%(tgt,srclbl))
511	return False
512	if not self.progress_bar:
513	Logs.info('+ install %s (from %s)'%(tgt,srclbl))
514	try:
515	os.chmod(tgt,Utils.O644\|stat.S_IMODE(os.stat(tgt).st_mode))
516	except EnvironmentError:
517	pass
518	try:
519	os.remove(tgt)
520	except OSError:
521	pass
522	try:
523	self.copy_fun(src,tgt,**kw)
524	except IOError:
525	try:
526	os.stat(src)
527	except EnvironmentError:
528	Logs.error('File %r does not exist'%src)
529	raise Errors.WafError('Could not install the file %r'%tgt)
530	def do_link(self,src,tgt,**kw):
531	d,_=os.path.split(tgt)
532	Utils.check_dir(d)
533	link=False
534	if not os.path.islink(tgt):
535	link=True
536	elif os.readlink(tgt)!=src:
537	link=True
538	if link:
539	try:os.remove(tgt)
540	except OSError:pass
541	if not self.progress_bar:
542	Logs.info('+ symlink %s (to %s)'%(tgt,src))
543	os.symlink(src,tgt)
544	else:
545	if not self.progress_bar:
546	Logs.info('- symlink %s (to %s)'%(tgt,src))
547	def run_task_now(self,tsk,postpone):
548	tsk.post()
549	if not postpone:
550	if tsk.runnable_status()==Task.ASK_LATER:
551	raise self.WafError('cannot post the task %r'%tsk)
552	tsk.run()
553	def install_files(self,dest,files,env=None,chmod=Utils.O644,relative_trick=False,cwd=None,add=True,postpone=True,task=None):
554	tsk=inst(env=env or self.env)
555	tsk.bld=self
556	tsk.path=cwd or self.path
557	tsk.chmod=chmod
558	tsk.task=task
559	if isinstance(files,waflib.Node.Node):
560	tsk.source=[files]
561	else:
562	tsk.source=Utils.to_list(files)
563	tsk.dest=dest
564	tsk.exec_task=tsk.exec_install_files
565	tsk.relative_trick=relative_trick
566	if add:self.add_to_group(tsk)
567	self.run_task_now(tsk,postpone)
568	return tsk
569	def install_as(self,dest,srcfile,env=None,chmod=Utils.O644,cwd=None,add=True,postpone=True,task=None):
570	tsk=inst(env=env or self.env)
571	tsk.bld=self
572	tsk.path=cwd or self.path
573	tsk.chmod=chmod
574	tsk.source=[srcfile]
575	tsk.task=task
576	tsk.dest=dest
577	tsk.exec_task=tsk.exec_install_as
578	if add:self.add_to_group(tsk)
579	self.run_task_now(tsk,postpone)
580	return tsk
581	def symlink_as(self,dest,src,env=None,cwd=None,add=True,postpone=True,relative_trick=False,task=None):
582	if Utils.is_win32:
583	return
584	tsk=inst(env=env or self.env)
585	tsk.bld=self
586	tsk.dest=dest
587	tsk.path=cwd or self.path
588	tsk.source=[]
589	tsk.task=task
590	tsk.link=src
591	tsk.relative_trick=relative_trick
592	tsk.exec_task=tsk.exec_symlink_as
593	if add:self.add_to_group(tsk)
594	self.run_task_now(tsk,postpone)
595	return tsk
596	class UninstallContext(InstallContext):
597	'''removes the targets installed'''
598	cmd='uninstall'
599	def __init__(self,**kw):
600	super(UninstallContext,self).__init__(**kw)
601	self.is_install=UNINSTALL
602	def rm_empty_dirs(self,tgt):
603	while tgt:
604	tgt=os.path.dirname(tgt)
605	try:
606	os.rmdir(tgt)
607	except OSError:
608	break
609	def do_install(self,src,tgt,**kw):
610	if not self.progress_bar:
611	Logs.info('- remove %s'%tgt)
612	self.uninstall.append(tgt)
613	try:
614	os.remove(tgt)
615	except OSError ,e:
616	if e.errno!=errno.ENOENT:
617	if not getattr(self,'uninstall_error',None):
618	self.uninstall_error=True
619	Logs.warn('build: some files could not be uninstalled (retry with -vv to list them)')
620	if Logs.verbose>1:
621	Logs.warn('Could not remove %s (error code %r)'%(e.filename,e.errno))
622	self.rm_empty_dirs(tgt)
623	def do_link(self,src,tgt,**kw):
624	try:
625	if not self.progress_bar:
626	Logs.info('- remove %s'%tgt)
627	os.remove(tgt)
628	except OSError:
629	pass
630	self.rm_empty_dirs(tgt)
631	def execute(self):
632	try:
633	def runnable_status(self):
634	return Task.SKIP_ME
635	setattr(Task.Task,'runnable_status_back',Task.Task.runnable_status)
636	setattr(Task.Task,'runnable_status',runnable_status)
637	super(UninstallContext,self).execute()
638	finally:
639	setattr(Task.Task,'runnable_status',Task.Task.runnable_status_back)
640	class CleanContext(BuildContext):
641	'''cleans the project'''
642	cmd='clean'
643	def execute(self):
644	self.restore()
645	if not self.all_envs:
646	self.load_envs()
647	self.recurse([self.run_dir])
648	try:
649	self.clean()
650	finally:
651	self.store()
652	def clean(self):
653	Logs.debug('build: clean called')
654	if self.bldnode!=self.srcnode:
655	lst=[]
656	for e in self.all_envs.values():
657	lst.extend(self.root.find_or_declare(f)for f in e[CFG_FILES])
658	for n in self.bldnode.ant_glob('*/',excl='.lock* conf_check_/** config.log c4che/*',quiet=True):
659	if n in lst:
660	continue
661	n.delete()
662	self.root.children={}
663	for v in'node_deps task_sigs raw_deps'.split():
664	setattr(self,v,{})
665	class ListContext(BuildContext):
666	'''lists the targets to execute'''
667	cmd='list'
668	def execute(self):
669	self.restore()
670	if not self.all_envs:
671	self.load_envs()
672	self.recurse([self.run_dir])
673	self.pre_build()
674	self.timer=Utils.Timer()
675	for g in self.groups:
676	for tg in g:
677	try:
678	f=tg.post
679	except AttributeError:
680	pass
681	else:
682	f()
683	try:
684	self.get_tgen_by_name('')
685	except Exception:
686	pass
687	lst=list(self.task_gen_cache_names.keys())
688	lst.sort()
689	for k in lst:
690	Logs.pprint('GREEN',k)
691	class StepContext(BuildContext):
692	'''executes tasks in a step-by-step fashion, for debugging'''
693	cmd='step'
694	def __init__(self,**kw):
695	super(StepContext,self).__init__(**kw)
696	self.files=Options.options.files
697	def compile(self):
698	if not self.files:
699	Logs.warn('Add a pattern for the debug build, for example "waf step --files=main.c,app"')
700	BuildContext.compile(self)
701	return
702	targets=None
703	if self.targets and self.targets!='*':
704	targets=self.targets.split(',')
705	for g in self.groups:
706	for tg in g:
707	if targets and tg.name not in targets:
708	continue
709	try:
710	f=tg.post
711	except AttributeError:
712	pass
713	else:
714	f()
715	for pat in self.files.split(','):
716	matcher=self.get_matcher(pat)
717	for tg in g:
718	if isinstance(tg,Task.TaskBase):
719	lst=[tg]
720	else:
721	lst=tg.tasks
722	for tsk in lst:
723	do_exec=False
724	for node in getattr(tsk,'inputs',[]):
725	if matcher(node,output=False):
726	do_exec=True
727	break
728	for node in getattr(tsk,'outputs',[]):
729	if matcher(node,output=True):
730	do_exec=True
731	break
732	if do_exec:
733	ret=tsk.run()
734	Logs.info('%s -> exit %r'%(str(tsk),ret))
735	def get_matcher(self,pat):
736	inn=True
737	out=True
738	if pat.startswith('in:'):
739	out=False
740	pat=pat.replace('in:','')
741	elif pat.startswith('out:'):
742	inn=False
743	pat=pat.replace('out:','')
744	anode=self.root.find_node(pat)
745	pattern=None
746	if not anode:
747	if not pat.startswith('^'):
748	pat='^.+?%s'%pat
749	if not pat.endswith('$'):
750	pat='%s$'%pat
751	pattern=re.compile(pat)
752	def match(node,output):
753	if output==True and not out:
754	return False
755	if output==False and not inn:
756	return False
757	if anode:
758	return anode==node
759	else:
760	return pattern.match(node.abspath())
761	return match

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