boxespy/scripts/boxesserver

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#!/usr/bin/env python3
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# Copyright (C) 2016-2017 Florian Festi
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
import argparse
import cgi
import tempfile
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import os.path
import threading
import time
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import codecs
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import mimetypes
import re
# Python 2 vs Python 3 compat
try:
from urllib.parse import unquote_plus
except ImportError:
from urllib import unquote_plus
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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
class FileChecker(threading.Thread):
def __init__(self, files=[], checkmodules=True):
super(FileChecker, self).__init__()
self.checkmodules = checkmodules
self.timestamps = {}
for path in files:
self.timestamps[path] = os.stat(path).st_mtime
if checkmodules:
self._addModules()
def _addModules(self):
for name, module in sys.modules.items():
path = getattr(module, "__file__", None)
if not path:
continue
if path not in self.timestamps:
self.timestamps[path] = os.stat(path).st_mtime
def filesOK(self):
if self.checkmodules:
self._addModules()
for path, timestamp in self.timestamps.items():
try:
if os.stat(path).st_mtime != timestamp:
return False
except FileNotFoundError:
return False
return True
def run(self):
while True:
if not self.filesOK():
os.execv(__file__, sys.argv)
time.sleep(1)
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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 = {b.__name__ : b() for b in boxes.generators.getAllBoxGenerators().values() if b.webinterface}
self.boxes['TrayLayout2'] = boxes.generators.traylayout.TrayLayout2(self, webargs=True)
self.groups = boxes.generators.ui_groups
self.groups_by_name = boxes.generators.ui_groups_by_name
for name, box in self.boxes.items():
self.groups_by_name.get(box.ui_group,
self.groups_by_name["Misc"]).add(box)
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self.staticdir = os.path.join(os.path.dirname(__file__), '../static/')
def arg2html(self, a, prefix):
name = a.option_strings[0].replace("-", "")
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if isinstance(a, argparse._HelpAction):
return ""
viewname = name
if prefix and name.startswith(prefix + '_'):
viewname = name[len(prefix)+1:]
row = """<tr><td>%s</td><td>%%s</td><td>%s</td></tr>\n""" % \
(viewname, a.help or "")
if (isinstance(a, argparse._StoreAction) and
hasattr(a.type, "html")):
input = a.type.html(name, a.default)
elif a.dest == "layout":
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val = a.default.split("\n")
input = """<textarea name="%s" cols="%s" rows="%s">%s</textarea>""" % \
(name, max((len(l) for l in val))+10, len(val)+1, a.default)
elif a.choices:
options = "\n".join(
("""<option value="%s"%s>%s</option>""" %
(e, ' selected="selected"' if e == a.default else "",
e) for e in a.choices))
input = """<select name="%s" size="1">\n%s</select>\n""" % (name, options)
else:
input = """<input name="%s" type="text" value="%s">""" % \
(name, a.default)
return row % input
scripts = """
<script type="text/javascript">
function showHide(id) {
var e = document.getElementById(id);
if(e.style.display == null || e.style.display == "none") {
e.style.display = "block";
} else {
e.style.display = "none";
}
}
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function hideargs() {
for ( i=0; i<%i; i++) {
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showHide(i);
}
}
</script>
"""
def args2html(self, name, box, action=""):
result = ["""<html><head><title>Boxes - """, name, """</title>
<link rel="stylesheet" href="https://necolas.github.io/normalize.css/4.1.1/normalize.css" type="text/css" />
<link rel="stylesheet" href="static/self.css" type="text/css" />
""", self.scripts % (len(box.argparser._action_groups)-3), """
<script>
</script>
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</head>
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<body onload="hideargs()">
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<div class="container" style="background-color: #FFF8EA;">
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<div style="float: left;">
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<a href="./"><h1>Boxes.py</h1></a>
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</div>
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<div style="width: 150px; float: right;">
<img alt="self-Logo" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Gray_shaded_3D_cube.svg/2000px-Gray_shaded_3D_cube.svg.png" width="150px" >
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</div>
<div>
<div class="clear"></div>
<hr />
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<h2 style="margin: 0px 0px 0px 20px;" ><span>""", name, """</h2>
<p>""", box.__doc__ or "", """</p>
<form action="%s" method="GET" target="_blank">
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""" % (action)]
groupid = 0
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for group in box.argparser._action_groups[3:] + box.argparser._action_groups[:3]:
if not group._group_actions:
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continue
prefix = getattr(group, "prefix", None)
result.append('''<h3 onclick="showHide(%s)">%s</h3>\n<table id="%s">\n''' % (groupid, group.title, groupid))
for a in group._group_actions:
if a.dest in ("input", "output"):
continue
result.append(self.arg2html(a, prefix))
result.append("</table>")
groupid += 1
result.append("""
<p><button name="render" value="1">Generate</button></p>
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</form>
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</div>
<!--
<div style="width: 5%; float: left;"></div>
<div style="width: 35%; float: left;">
<img alt="sample" src="examples/box.svg" width="300px" >
<span id="sicherheitshinweise">hier kommt dann der AJAX-Inhalt</span>
</div>
-->
<div class="clear"></div>
<hr />
</div>
</div>
<div class="footer container">
<ul>
<li><a href="https://github.com/florianfesti/boxes">Get Source at GitHub</a></li>
<li><a href="http://florianfesti.github.io/boxes/html/index.html">Documentation and API Description</a></li>
<li><a href="https://hackaday.io/project/10649-boxespy">Hackaday.io Project Page</a></li>
</ul>
</div>
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</body>
</html>
""")
return (s.encode("utf-8") for s in result)
def menu(self):
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result = ["""<html>
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<head><title>Boxes.py</title>
<link rel="stylesheet" href="https://necolas.github.io/normalize.css/4.1.1/normalize.css" type="text/css" />
<link rel="stylesheet" href="static/self.css" type="text/css" />
<script>
function change(group, img_link){
document.getElementById("sample-"+group).src = img_link;
document.getElementById("sample-"+group).style.height = "auto";
}
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function changeback(group){
document.getElementById("sample-" + group).src= "static/nothing.png";
document.getElementById("sample-" + group).style.height= "0px";
}
</script>""", self.scripts % len(self.groups), """
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</head>
<body onload="hideargs()">
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<div class="container" style="background-color: #FFF8EA;">
<div style="width: 70%; float: left;">
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<h1>Boxes.py</h1>
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<p>
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Create boxes and more with a laser cutter!
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</p>
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<p>
<a href="https://hackaday.io/project/10649-boxespy">Boxes.py</a> is an <a href="https://www.gnu.org/licenses/gpl-3.0.en.html">Open Source</a> box generator written in <a href="https://www.python.org/">Python</a>. It features both finished parametrized generators as well as a Python API for writing your own. It features finger and (flat) dovetail joints, flex cuts, holes and slots for screws, hinges, gears, pulleys and much more.
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</p>
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</div>
<div style="width: 30%; float: left;">
<img alt="self-Logo" src="https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Gray_shaded_3D_cube.svg/2000px-Gray_shaded_3D_cube.svg.png" width="300px" >
</div>
<div>
<div class="clear"></div>
<hr />
<div style="width: 100%">
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""" ]
for nr, group in enumerate(self.groups):
result.append('''<h3 onclick="showHide('%s')">%s</h3>\n<div id="%s">\n<ul>\n''' % (nr, group.title, nr))
result.append("""
<div style="width: 20%%; float: right;">
<img width="100%%" id="sample-%s" src="static/nothing.png" alt="" />
</div>""" % (group))
for box in group.generators:
name = box.__class__.__name__
if name in ("TrayLayout2", ):
continue
docs = ""
if box.__doc__:
docs = " - " + box.__doc__
result.append(""" <li onmouseenter="change('%s', 'static/samples/%s.jpg')" onmouseleave="changeback('%s')"><a href="%s">%s</a>%s</li>\n""" % (
group, name, group, name, name, docs))
result.append("</ul>\n</div>\n")
result.append("""
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</div>
<div style="width: 5%; float: left;"></div>
<div class="clear"></div>
<hr />
</div>
</div>
<div class="footer container">
<ul>
<li><a href="https://github.com/florianfesti/boxes">Get Source at GitHub</a></li>
<li><a href="http://florianfesti.github.io/boxes/html/index.html">Documentation and API Description</a></li>
<li><a href="https://hackaday.io/project/10649-boxespy">Hackaday.io Project Page</a></li>
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</ul>
</div>
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</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 serveStatic(self, environ, start_response):
filename = environ["PATH_INFO"][len("/static/"):]
path = os.path.join(self.staticdir, filename)
print(filename, path)
if (not re.match(r"[a-zA-Z0-9_/-]+\.[a-zA-Z0-9]+", filename) or
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not os.path.exists(path)):
start_response("404 Not Found", [('Content-type', 'text/plain')])
return [b"Not found"]
type_, encoding = mimetypes.guess_type(filename)
if encoding is None:
encoding = "utf8"
start_response("200 OK", [('Content-type', "%s; charset=%s" % (type_, encoding))])
f = open(path, 'rb')
return environ['wsgi.file_wrapper'](f, 512*1024)
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def serve(self, environ, start_response):
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if environ["PATH_INFO"].startswith("/static/"):
return self.serveStatic(environ, start_response)
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status = '200 OK'
headers = [('Content-type', 'text/html; charset=utf-8')]
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d = cgi.parse_qs(environ['QUERY_STRING'])
name = environ["PATH_INFO"][1:]
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box = self.boxes.get(name, None)
if not box:
start_response(status, headers)
return self.menu()
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args = ["--"+unquote_plus(arg) for arg in environ['QUERY_STRING'].split("&")]
if "--render=1" not in args:
start_response(status, headers)
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return self.args2html(name, box)
else:
args = [a for a in args if a != "--render=1"]
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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:
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box.parse(box.layout.split("\n"))
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except Exception as e:
raise
start_response(status, headers)
return self.errorMessage(name, e)
start_response(status,
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box.formats.http_headers.get(
box.format,
[('Content-type', 'application/unknown; 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__":
fc = FileChecker()
fc.start()
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boxserver = BServer()
httpd = make_server('', 8000, boxserver.serve)
print("Serving on port 8000...")
httpd.serve_forever()
else:
application = BServer().serve
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