Mercurial > piecrust2
diff piecrust/processing/requirejs.py @ 117:6827dcc9d3fb
Changes to the asset processing pipeline:
* Add semi-functional RequireJS processor.
* Processors now match on the relative path.
* Support for processors that add more processors of their own.
* A couple of related fixes.
author | Ludovic Chabant <ludovic@chabant.com> |
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date | Tue, 28 Oct 2014 08:20:38 -0700 |
parents | |
children | e5f048799d61 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/piecrust/processing/requirejs.py Tue Oct 28 08:20:38 2014 -0700 @@ -0,0 +1,83 @@ +import os +import os.path +import json +import hashlib +import logging +import platform +import subprocess +from piecrust.processing.base import Processor, PRIORITY_FIRST +from piecrust.processing.tree import FORCE_BUILD + + +logger = logging.getLogger(__name__) + + +class RequireJSProcessor(Processor): + PROCESSOR_NAME = 'requirejs' + + def __init__(self): + super(RequireJSProcessor, self).__init__() + self.is_bypassing_structured_processing = True + self._conf = None + + def initialize(self, app): + super(RequireJSProcessor, self).initialize(app) + + self._conf = app.config.get('requirejs') + if self._conf is None: + return + + if 'build_path' not in self._conf: + raise Exception("You need to specify `requirejs/build_path` " + "for RequireJS.") + self._conf.setdefault('bin', 'r.js') + self._conf.setdefault('out_path', self._conf['build_path']) + + def onPipelineStart(self, pipeline): + super(RequireJSProcessor, self).onPipelineStart(pipeline) + + logger.debug("Adding Javascript suppressor to build pipeline.") + skip = _JavascriptSkipProcessor(self._conf['build_path']) + pipeline.processors.append(skip) + + def matches(self, path): + return path == self._conf['build_path'] + + def getDependencies(self, path): + return FORCE_BUILD + + def process(self, path, out_dir): + args = [self._conf['bin'], '-o', path] + shell = (platform.system() == 'Windows') + cwd = self.app.root_dir + logger.debug("Running RequireJS: %s" % ' '.join(args)) + try: + retcode = subprocess.call(args, shell=shell, cwd=cwd) + except FileNotFoundError as ex: + logger.error("Tried running RequireJS processor " + "with command: %s" % args) + raise Exception("Error running RequireJS. " + "Did you install it?") from ex + if retcode != 0: + raise Exception("Error occured in RequireJS compiler. " + "Please check log messages above for " + "more information.") + return True + + +class _JavascriptSkipProcessor(Processor): + PROCESSOR_NAME = 'requirejs_javascript_skip' + + def __init__(self, except_path=None): + super(_JavascriptSkipProcessor, self).__init__() + self.priority = PRIORITY_FIRST + self.is_bypassing_structured_processing = True + self._except_path = except_path + + def matches(self, path): + _, ext = os.path.splitext(path) + return ext == '.js' and path != self._except_path + + def process(self, in_path, out_path): + return False +