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hartsantler
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added Tornado test server that automatically converts python scripts into javascript.
1 parent 83bfb40 commit a8ee64d

3 files changed

Lines changed: 192 additions & 1 deletion

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‎bindings/three.py‎

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# THREE.js wrapper for PythonScript
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# by Brett Hartshorn - copyright 2013
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# License: "New" BSD
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# License: PSFLv2 - http://www.python.org/psf/license/
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class _Vector3:
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def __init__(self, jsobject=None):
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self._vec = jsobject
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class _ObjectBase:
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def add(self, child):

‎tests/helloworld.html‎

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<html>
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<head>
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<script src="pythonscript.js"></script>
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<script type="text/python">
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def test():
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print('hello world')
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</script>
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</head>
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<body>
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<button onclick="test()">click me</button>
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</body>
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</html>

‎tests/server.py‎

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#!/usr/bin/python3
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# Test Server for PythonScript
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# by Brett Hartshorn - copyright 2013
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# License: PSFLv2 - http://www.python.org/psf/license/
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# Requires: Python3 and Tornado
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try:
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import tornado
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except ImportError:
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print('ERROR: Tornado is not installed')
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print('download Tornado from - http://www.tornadoweb.org/en/stable/')
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raise SystemExit
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import tornado.ioloop
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import tornado.web
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import os, subprocess
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PATHS = dict(
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webroot = os.path.dirname(os.path.abspath(__file__)),
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pythonscript = os.path.abspath('../pythonscript'),
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bindings = os.path.abspath('../bindings'),
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closure = os.path.expanduser( '~/closure-compiler/compiler.jar'),
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runtime = os.path.abspath('../pythonscript.js'),
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)
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def python_to_pythonjs( src ):
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p = subprocess.Popen(
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['python2', os.path.join( PATHS['pythonscript'], 'python_to_pythonjs.py')],
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE
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)
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stdout, stderr = p.communicate( src.encode('utf-8') )
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return stdout.decode('utf-8')
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def pythonjs_to_javascript( src, closure_compiler=False ):
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p = subprocess.Popen(
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['python2', os.path.join( PATHS['pythonscript'],'pythonjs.py')],
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE
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)
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stdout, stderr = p.communicate( src.encode('utf-8') )
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a = stdout.decode('utf-8')
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if closure_compiler and os.path.isfile( PATHS['closure'] ):
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x = '/tmp/input.js'; y = '/tmp/output.js'
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f = open(x, 'wb'); f.write( a.encode('utf-8') ); f.close()
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subprocess.call( ['java', '-jar', PATHS['closure'], '--compilation_level', 'ADVANCED_OPTIMIZATIONS', '--js', x, '--js_output_file', y] )
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f = open(y, 'rb'); a = f.read().decode('utf-8'); f.close()
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return a
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def python_to_javascript( src, closure_compiler=False ):
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a = python_to_pythonjs( src )
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return pythonjs_to_javascript( a, closure_compiler=closure_compiler )
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#########################################################
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def get_main_page():
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root = PATHS['webroot']
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r = ['<html><head><title>index</title></head><body>']
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r.append( '<ul>' )
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for name in os.listdir( root ):
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if name == os.path.split(__file__)[-1]: continue
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path = os.path.join( root, name )
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if os.path.isfile( path ):
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r.append( '<a href="%s"><li>%s</li></a>' %(name,name) )
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r.append('</ul>')
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r.append('</body></html>')
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return ''.join(r)
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def convert_python_html_document( data ):
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'''
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rewrites html document, converts python scripts into javascript.
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example:
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<script type="text/python" closure="true">
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print("hello world")
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</script>
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'''
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doc = list()
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script = None
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use_closure = False
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for line in data.splitlines():
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if line.strip().startswith('<script') and 'type="text/python"' in line:
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if 'closure="true"' in line.lower(): use_closure = True
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else: use_closure = False
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doc.append( '<script type="text/javascript">')
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script = list()
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elif line.strip() == '</script>':
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if script:
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src = '\n'.join( script )
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js = python_to_javascript( src, closure_compiler=use_closure )
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doc.append( js )
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doc.append( line )
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script = None
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elif isinstance( script, list ):
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script.append( line )
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else:
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doc.append( line )
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return '\n'.join( doc )
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class MainHandler( tornado.web.RequestHandler ):
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def get(self, path=None):
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print('path', path)
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if not path:
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self.write( get_main_page() )
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elif path == 'pythonscript.js':
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data = open( PATHS['runtime'], 'rb').read()
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self.set_header("Content-Type", "text/javascript; charset=utf-8")
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self.set_header("Content-Length", len(data))
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self.write(data)
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elif path.startswith('bindings/'):
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name = path.split('/')[-1]
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local_path = os.path.join( PATHS['bindings'], name )
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if os.path.isfile( local_path ):
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data = open(local_path, 'rb').read()
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else:
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raise tornado.web.HTTPError(404)
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if path.endswith('.py'):
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data = python_to_javascript( data.decode('utf-8'), closure_compiler=False )
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self.set_header("Content-Type", "text/javascript; charset=utf-8")
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self.set_header("Content-Length", len(data))
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self.write( data )
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else:
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local_path = os.path.join( PATHS['webroot'], path )
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if os.path.isfile( local_path ):
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data = open(local_path, 'rb').read()
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if path.endswith( '.html' ):
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data = convert_python_html_document( data.decode('utf-8') )
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self.set_header("Content-Type", "text/html; charset=utf-8")
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elif path.endswith('.py'):
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data = python_to_javascript( data.decode('utf-8'), closure_compiler=True )
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self.set_header("Content-Type", "text/html; charset=utf-8")
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self.set_header("Content-Length", len(data))
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self.write( data )
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else:
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self.write('Hello World')
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Handlers = [
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(r'/(.*)', MainHandler)
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]
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if __name__ == '__main__':
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assert os.path.isfile( PATHS['runtime'] )
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assert os.path.isdir( PATHS['pythonscript'] )
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assert os.path.isdir( PATHS['bindings'] )
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app = tornado.web.Application(
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Handlers,
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#cookie_secret = 'some random text',
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#login_url = '/login',
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#xsrf_cookies = False,
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)
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app.listen( 8080 )
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tornado.ioloop.IOLoop.instance().start()

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