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#!/usr/bin/env python
import cgitb; cgitb.enable()
import cgi, os, sys, subprocess
from tempfile import NamedTemporaryFile as NTF
from settings import PANDOC
"""
Simple Upload form that saves files to a temp named file,
calls pandoc for conversion to a given format,
& displays results in browser.
Uses a temp file because formats like docx are considered "archives"
and need to be accessed by pandoc as filenames to actual filenames
(not piped directly in)
"""
method = os.environ.get("REQUEST_METHOD")
_types = {
'markdown': { 'mime': "text/plain;charset=utf-8", 'ext': 'markdown' },
# 'icml': { 'mime': "application/xml;charset=utf-8", 'ext': 'icml' },
'icml': { 'mime': "text/plain;charset=utf-8", 'ext': 'icml' },
'docx': { 'mime': "application/vnd.openxmlformats-officedocument.wordprocessingml.document;charset=utf-8", 'ext': 'docx' },
'html': { 'mime': "text/html;charset=utf-8", 'ext': 'html' }
}
DEFAULT_TYPE = { 'mime': "text/plain;charset=utf-8", 'ext': 'txt' }
def guess_format_from_filename (fn):
if fn.endswith(".docx"):
return "docx"
return "txt"
if method == "POST":
fs = cgi.FieldStorage()
from_format = fs.getvalue("from")
to_format = fs.getvalue("to", "markdown")
to_type = _types.get(to_format, DEFAULT_TYPE)
submit = fs.getvalue("_submit", "submit")
download = submit == "download"
download_filename = None
if download:
download_filename = "hype_conversion." + to_type['ext']
try:
f = fs["file"]
except KeyError:
f = None
###################################
# FILE INPUT
###################################
if f != None and f.file:
if from_format == None:
from_format = guess_format_from_filename(f.filename)
tmp = NTF(delete=False)
bytes = 0
while True:
data = f.file.read()
if not data:
break
bytes += len(data)
tmp.write(data)
# print "saved to '{0}'<br>".format(tmp.name)
# print "read {0} bytes<br>".format(bytes)
tmp.close()
try:
print "Content-type: {0}".format(to_type['mime'])
if download:
print "Content-Disposition: attachment;filename=\"hype_conversion.{0}\"".format(to_type['ext'])
print
# p = subprocess.check_output('pandoc --from {0} --to {1} "{2}"'.format(ffrom, to, tmp.name), shell=True, stderr=subprocess.STDOUT)
# print p
p = subprocess.Popen([PANDOC, '--from', from_format, '--to', to_format, tmp.name], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()
print out
except subprocess.CalledProcessError, e:
print "Content-type: text/html;charset=utf-8"
print
print u"<span style='font-family:monospace'>An error occurred, pandoc said: {0}</span>".format(e.output).format("utf-8")
tmp.unlink(tmp.name)
###################################
# FORM/TEXT INPUT
###################################
else:
text = fs.getvalue("text")
if from_format and to_format:
try:
print "Content-type: {0}".format(to_type['mime'])
if download:
print "Content-Disposition: attachment;filename=\"hype_conversion.{0}\"".format(to_type['ext'])
print
# p = subprocess.check_output('pandoc --from {0} --to {1} "{2}"'.format(ffrom, to, tmp.name), shell=True, stderr=subprocess.STDOUT)
# print p
p = subprocess.Popen([PANDOC, '--from', from_format, '--to', to_format], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate(text)
print out
except subprocess.CalledProcessError, e:
print "Content-type: text/html;charset=utf-8"
print
print u"<span style='font-family:monospace'>An error occurred, pandoc said: {0}</span>".format(e.output).encode("utf-8")
else:
print "Content-type: text/html;charset=utf-8"
print
print u"<span style='font-family:monospace'>Format unspecified</span>".encode("utf-8")
sys.exit(0)
print "Content-type: text/html;charset=utf-8"
print
print """<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
</head>
<body>
<form enctype="multipart/form-data" action="" method="post">
<p>Convert: <input type="file" name="file"></p>
to: <select name="to">
<option>markdown</option>
<option>html</option>
</select>
<p><input type="submit" value="OK"></p>
</form>
</body></html>
"""