boxespy/scripts/boxesserver

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#!/usr/bin/python3
import sys
import argparse
import cgi
import tempfile
import os
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import urllib
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from wsgiref.util import setup_testing_defaults
from wsgiref.simple_server import make_server
import wsgiref.util
try:
import boxes.generators
except ImportError:
sys.path.append(os.path.dirname(__file__) + "/..")
import boxes.generators
from boxes.generators import box, box2, box3, drillbox
from boxes.generators import flexbox, flexbox2, flexbox3, flextest, folder
from boxes.generators import magazinefile, trayinsert, traylayout, typetray, silverwarebox
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class ArgumentParserError(Exception): pass
class ThrowingArgumentParser(argparse.ArgumentParser):
def error(self, message):
raise ArgumentParserError(message)
boxes.ArgumentParser = ThrowingArgumentParser # Evil hack
class BServer:
def __init__(self):
self.boxes = {
"DemoBox" : boxes.DemoBox(),
"Box" : box.Box(),
"Box2" : box2.Box(),
"Box3" : box3.Box(),
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"DrillBox" : drillbox.Box(),
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"FlexBox" : flexbox.FlexBox(),
"FlexBox2" : flexbox2.FlexBox(),
"FlexBox3" : flexbox3.FlexBox(),
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"FlexTest": flextest.FlexTest(),
"Folder": folder.Folder(),
"MagazinFile" : magazinefile.Box(),
"TrayInsert" : trayinsert.TrayInsert(),
"TypeTray" : typetray.TypeTray(),
"SilverwareBox" : silverwarebox.Silverware(),
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"TrayLayout" : traylayout.LayoutGenerator(),
"TrayLayout2" : traylayout.Layout(webargs=True),
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}
def arg2html(self, a):
name = a.option_strings[0].replace("-", "")
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if isinstance(a, argparse._HelpAction):
return ""
if isinstance(a, argparse._StoreTrueAction):
return """<tr><td>%s</td><td><input name="%s" type="checkbox" value="%s"></td><td>%s</td></tr>\n""" % \
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(name, name, a.default, a.help)
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if a.dest == "layout":
val = a.default.split("\n")
return """<tr><td>%s</td><td><textarea name="%s" cols="%s" rows="%s">%s</textarea></td><td>%s</td></tr>\n""" % \
(name, name, max((len(l) for l in val))+10, len(val)+1,
a.default, a.help or "")
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return """<tr><td>%s</td><td><input name="%s" type="text" value="%s"></td><td>%s</td></tr>\n""" % \
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(name, name, a.default, a.help)
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def args2html(self, name, box, action=""):
result = ["""<html><head><title>Boxes - """, name, """</title></head>
<body>
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<h1>""", name, """</h1>
<p>""", box.__doc__, """</p>
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<form action="%s" method="POST" target="_blank">
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<table>
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""" % (action)]
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for a in box.argparser._actions:
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if a.dest in ("input", "output"):
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continue
result.append(self.arg2html(a))
if a.dest == "burn":
result.append("</table>\n<hr>\n<table>\n")
result.append("""</table>
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<p><button>Generate</button></p>
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</form>
</body>
</html>
""")
return (s.encode("utf-8") for s in result)
def menu(self):
result = ["""<html>
<head><title>Boxes for Laser Cutters</title></head>
<body>
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<h1>boxes.py</h1>
<p>
A Python based generator for laser cut boxes and other things.
</p>
<p>It features both finished parametrized generators as well as a Python API
for writing your own scripts. It features finger and (flat) dovetail joints,
flex cuts, holes and slots for screws and more high level functions.
</p>
<p>These are the available generators:</p>
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<ul>
""" ]
for name in sorted(self.boxes):
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if name in ("TrayLayout2", ):
continue
box = self.boxes[name]
docs = ""
if box.__doc__:
docs = " - " + box.__doc__
result.append(""" <li><a href="%s">%s</a>%s</li>""" % (
name, name, docs))
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result.append("""</ul>
</body>
</html>
""")
return (s.encode("utf-8") for s in result)
def errorMessage(self, name, e):
return [
b"""<html><head><title>Error generating""", name.encode(),
b"""</title><head>
<body>
<h1>An error occurred!</h1>
<p>""", str(e).encode(), b"""</p>
</body>
</html>
""" ]
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def serve(self, environ, start_response):
status = '200 OK'
headers = [('Content-type', 'text/html; charset=utf-8')]
d = cgi.parse_qs(environ['QUERY_STRING'])
name = environ["PATH_INFO"][1:]
box = self.boxes.get(name, None)
if not box:
start_response(status, headers)
return self.menu()
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if environ["REQUEST_METHOD"] == "GET":
start_response(status, headers)
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return self.args2html(name, box)
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elif environ["REQUEST_METHOD"] == "POST":
try:
length = int(environ.get('CONTENT_LENGTH', '0'))
except ValueError:
length = 0
body = environ['wsgi.input'].read(length).decode()
args = ["--"+arg for arg in body.split("&")]
try:
box.parseArgs(args)
except (ArgumentParserError) as e:
start_response(status, headers)
return self.errorMessage(name, e)
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if name == "TrayLayout":
start_response(status, headers)
box.fillDefault(box.x, box.y)
self.boxes["TrayLayout2"].argparser.set_defaults(layout=str(box))
return self.args2html(
name, self.boxes["TrayLayout2"], action="TrayLayout2")
if name == "TrayLayout2":
try:
print(urllib.parse.unquote_plus(box.layout))
box.parse(urllib.parse.unquote_plus(box.layout).split("\n"))
except Exception as e:
raise
start_response(status, headers)
return self.errorMessage(name, e)
start_response(status,
[('Content-type', 'image/svg+xml; charset=utf-8')])
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fd, box.output = tempfile.mkstemp()
box.render()
result = open(box.output).readlines()
os.remove(box.output)
os.close(fd)
return (l.encode("utf-8") for l in result)
if __name__=="__main__":
boxserver = BServer()
httpd = make_server('', 8000, boxserver.serve)
print("Serving on port 8000...")
httpd.serve_forever()