結構大変だったのでメモ。参考文献は忘れたのでパス。
HTTPでアクセスできるサーバを、 wsgiref というモジュールで書きました。
以下のプログラムどっかでを実行して、
http://localhost:8080 にブラウザからアクセスすると、フォームが現れます。
ブラウザから画像を選択 -> サーバがカレントディレクトリに aaa.png という名前で保存します。
import cgi, StringIO
from wsgiref import simple_server
import numpy, Image
class Selector(object):
def __init__(self, table, notfound = None):
tmp = sorted(table, key=lambda x:len(x), reverse=True)
table = [(x, table[x]) for x in tmp]
self.table = table # url table
if notfound:
self.notfound = notfound # when not found
def __call__(self, environ, start_response):
name = "SCRIPT_NAME"
info = "PATH_INFO"
scriptname = environ.get(name, "")
pathinfo = environ.get(info, "")
for p, app in self.table:
print p, pathinfo
if p == "" or p =="/" or pathinfo.startswith(p):
print app
return app(environ, start_response)
if pathinfo == p or pathinfo.startswith(p) and pathinfo[len(p)] == "/":
scriptname = scriptname + p
pathinfo = pathinfo[len(p):]
environ[name] = scriptname
environ[info] = pathinfo
return app(environ, start_response)
return self.notfound(environ, start_response)
def notfound(self, environ, start_response):
start_response('404 Not Found', [('Content-type', 'text/html')])
fp = StringIO.StringIO()
fp.write(r"""<html><header><title>Not Found</title></header>
<body>
<H1> URL not found. </H1>
<ul>
""")
for entry in self.table:
fp.write(r"<li/> %s %s" % (entry[0], entry[1]))
fp.write(r"</ul></body></html>")
fp.seek(0)
return fp
def imageupload(environ, start_response):
try:
clen = int(environ["CONTENT_LENGTH"])
except:
clen = 0
f = cgi.FieldStorage(fp=environ["wsgi.input"],
environ=environ,
keep_blank_values=True)
handle = open("aaa.png", "wb")
handle.write(f["filename"].file.read())
handle.close()
fp = StringIO.StringIO()
fp.write(r"<html><body> environmental variables <dl>")
for key in sorted(environ.keys()):
fp.write(r"<dt>%s</dt><dd>%s</dd>" % (key, environ[key]))
fp.write(r"</dl></body></html>")
fp.seek(0)
start_response("200 OK", [("Content-type", "text/html")])
return fp
def showtop(environ, start_response):
start_response("200 OK", [("Content-type", "text/html")])
return r"""<html><body>
imageupload
<form action="/image" enctype="multipart/form-data" method="post">
<input type="file" name="filename"><input type="submit" value="Upload">
</form>
</body></html>"""
if __name__ == '__main__':
application = Selector({"/":showtop, "/image":imageupload})
srv = simple_server.make_server('', 8080, application)
srv.serve_forever()
