def __init__ (self,base=None,instant_reload=True):
self.instant_reload = instant_reload
self.reload_handler = ReloadEventHandler(self)
if base:
self.base = base
self.before = []
self.paths = {}
self._outputs = []
self.outputs = {}
self._references = {}
self._anon_references = []
self.processor_manager = ProcessorManager(self)
class Environment(object):
def __init__ (self,base=None,instant_reload=True):
self.instant_reload = instant_reload
self.reload_handler = ReloadEventHandler(self)
if base:
self.base = base
self.before = []
self.paths = {}
self._outputs = []
self.outputs = {}
self._references = {}
self._anon_references = []
self.processor_manager = ProcessorManager(self)
def __getitem__(self, name):
return self.single_asset(name)
def abspath(self, filename):
"""Create an absolute path based on the directory.
"""
if path.isabs(filename):
return filename
return path.abspath(path.join(self.base, filename))
def relpath(self,filename1,filename2):
return path.normpath(path.dirname(filename1)+'/'+filename2)
# def outputs (self):
# return self._outputs
# def resolve_processor (self,processor):
# if isinstance(processor, basestring):
# return self.processors.get(processor,load_processor(processor))
# else:
# return processor
# def register_processor (self,name,processor):
# self.processors[name] = self.resolve_processor(processor)
def compile(self,dir,force=False):
# outputs = self.build()
# self.process() #hack
for outputfile,asset in self.outputs.iteritems():
complete_path = path.join(dir,outputfile)
pathname = path.dirname(complete_path)
if not path.isdir(pathname):
makedirs(pathname)
if path.isfile(complete_path):
mtime = path.getmtime(complete_path)
if not force and mtime>=asset.last_modified: continue
f = open(complete_path,'w+')
f.write(str(asset.content))
f.close()
def before_processors (self, filename):
for regex, processor in self.before:
if regex.match(filename): yield processor
def single_asset (self,name,**kwargs):
kwargs['environment'] = self
try:
is_reference, reference_name = reference(name)
except:
raise Exception(name)
if is_reference:
return self._references.get(reference_name)
# elif self._outputs.has_key(name):
# return self._outputs[name]
elif has_magic(name):
return GlobAsset(name,**kwargs)
else:
return FileAsset(name,**kwargs)
def asset (self, output=None, src=[], **kwargs):
# print output, src, kwargs
kwargs['environment'] = self
name = kwargs.pop('name',None)
if len(src)>1:
pre = kwargs.pop('pre')
asset = AssetCollection(**kwargs)
kwargs.pop('processors')
for _asset in src:
if isinstance(_asset,basestring): _asset = self.asset(src=[_asset],pre=pre, **kwargs)
asset.add(_asset)
else:
if not src and not name:
src = [output]
output = '{path}{filename}'
asset = self.single_asset(*src,**kwargs)
if output:
self.output(output,asset)
if name:
self._references[name] = asset
return asset
@property
def base(self):
return self._base
@base.setter
def base(self,base):
self._base = base
self.add_path('default',base)
def add_path(self,name, path):
if name=='default': self._base = path
self.paths[name] = path
if self.instant_reload:
observer = Observer()
observer.schedule(self.reload_handler, path=path, recursive=True)
observer.start()
def settings(self, settings):
self.config = {}
self.paths = {}
if 'base' in settings:
self.base = settings['base']
if 'build' in settings:
self.build_path = settings['build']
if 'config' in settings:
self.config = settings['config']
if 'paths' in settings:
for name, path in settings['paths'].iteritems():
self.add_path(name, path)
self.before = []
if 'before' in settings:
for regex, processor in settings['before'].iteritems():
# print regex, type(regex)
formatted_re = re.compile(regex)
self.before.append((formatted_re, processor))
self.processor_manager.setup()
assets = settings.get('assets',[])
for asset in assets:
output = asset.get('file',None)
path = asset.get('path','default')
name = asset.get('name',None)
src = asset.get('src',[])
processors = asset.get('processors',[])
self.asset(output=output,src=to_list(src),name=name, processors=to_list(processors),pre=self.get_path(path))
def from_yaml(self,filename):
import yaml
stream = open(filename, 'r')
settings = yaml.load(stream)
self.settings(settings)
def get_path(self,path):
if path not in self.paths:
raise Exception("Path %s is not defined"%path)
return self.paths[path]
def output (self,path,asset):
self._outputs.append((path,asset))
def url(self,asset):
return asset._source+asset._extra
def asset_name(self,asset,name):
return name.format(**asset.output), asset
@property
def iter_assets(self):
for name, asset in self._outputs:
try:
asset.load()
dumped = asset.dump()
if isinstance(dumped,AssetCollection):
for _asset in dumped.flatten:
yield self.asset_name(_asset,name)
else:
yield self.asset_name(dumped,name)
except BuildError:
logging.exception('Cannot build asset "%s" '%name)
def build(self):
init = time()
self.outputs = dict(list(self.iter_assets))
total = time()-init
logging.info('Build complete in %.1f seconds', total)
return self.outputs
