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BlocklyPropHTTPRequestHandler.py
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BlocklyPropHTTPRequestHandler.py
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__author__ = 'Michel'
"""Simple HTTP Server.
This module builds on BaseHTTPServer by implementing the standard GET
and HEAD requests in a fairly straightforward manner.
"""
__version__ = "0.1"
__all__ = ["BlocklyPropHTTPRequestHandler"]
import os
import posixpath
import BaseHTTPServer
import urllib
import cgi
import shutil
import json
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
from cgi import parse_header, parse_multipart
from urlparse import parse_qs
from PropellerLoad import PropellerLoad
from SpinCompiler import SpinCompiler
from PropCCompiler import PropCCompiler
class BlocklyPropHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
"""Simple HTTP request handler with GET and HEAD commands.
The GET and HEAD requests are identical except that the HEAD
request omits the actual contents of the file.
"""
server_version = "BlocklyPropHTTP/" + __version__
def do_GET(self):
"""Serve a GET request."""
path = self.path
print("GET:", path)
f = StringIO()
if path == "/ports.json":
global propellerLoad
ports = propellerLoad.get_ports()
f.write(ports)
elif path == "/serverinfo.json":
serverinfo = {
"server":"BlocklyPropHTTP",
"version":__version__
}
f.write(json.dumps(serverinfo))
length = f.tell()
f.seek(0)
self.send_response(200)
self.send_header("Access-Control-Allow-Origin", "*")
self.send_header("Content-type", "text/json")
self.send_header("Content-Length", str(length))
self.end_headers()
if f:
self.copyfile(f, self.wfile)
f.close()
def do_POST(self):
"""Serve a POST request."""
postvars = self.parse_POST()
action = postvars.get("action")[0]
language = postvars.get("language")[0]
code = postvars.get("code")[0]
com_port = postvars.get("com-port")
if com_port is not None:
com_port = com_port[0]
global compiler
result = compiler[language].handle(action, code, com_port)
f = StringIO()
f.write(json.dumps(result))
length = f.tell()
f.seek(0)
self.send_response(200)
self.send_header("Access-Control-Allow-Origin", "*")
self.send_header("Content-type", "text/json")
self.send_header("Content-Length", str(length))
self.end_headers()
if f:
self.copyfile(f, self.wfile)
f.close()
def copyfile(self, source, outputfile):
"""Copy all data between two file objects.
The SOURCE argument is a file object open for reading
(or anything with a read() method) and the DESTINATION
argument is a file object open for writing (or
anything with a write() method).
The only reason for overriding this would be to change
the block size or perhaps to replace newlines by CRLF
-- note however that this the default server uses this
to copy binary data as well.
"""
shutil.copyfileobj(source, outputfile)
def parse_POST(self):
ctype, pdict = parse_header(self.headers['content-type'])
if ctype == 'multipart/form-data':
postvars = parse_multipart(self.rfile, pdict)
elif ctype == 'application/x-www-form-urlencoded':
length = int(self.headers['content-length'])
postvars = parse_qs(
self.rfile.read(length),
keep_blank_values=1)
else:
postvars = {}
return postvars
propellerLoad = PropellerLoad()
compiler = {
"spin" : SpinCompiler(propellerLoad),
"prop-c": PropCCompiler(propellerLoad)
}