Convert markdown to html in a shell script using Xcode's CommonMark framework

xcodemarkdown.sh

#!/bin/bash


cat <<__MARKDOWN__ |
# Title ÅÄÖ

* list
__MARKDOWN__
/usr/bin/python <( cat <<__EOF__
#!/usr/bin/python
# -*- coding: utf-8 -*-


# https://gist.github.com/pudquick/03e454f4d2ad3ebe09216b78559c0541


import os
import sys
import ctypes
import subprocess


def save_stderr():
    oldstderr = os.dup(2)
    os.dup2(os.open("/dev/null", os.O_WRONLY), 2)
    return oldstderr

def restore_stderr(oldstderr):
    sys.stderr = os.fdopen(oldstderr, "w")

def open_commonmark():
    oldstderr = save_stderr()
    dev_path = subprocess.check_output(["xcode-select", "-p"]).rstrip()
    xcode_path = dev_path.partition(".app/")[0] + ".app"
    dtvmarkup_path = os.path.join(xcode_path, "Contents/SharedFrameworks/DVTMarkup.framework")
    commonmark_path = os.path.join(dtvmarkup_path, "Versions/A/Frameworks/CommonMark.framework")
    CM = ctypes.CDLL(os.path.join(commonmark_path, "CommonMark"))
    restore_stderr(oldstderr)
    return CM

CM = open_commonmark()
cmark_markdown_to_html = CM.cmark_markdown_to_html
cmark_markdown_to_html.restype = ctypes.c_char_p

def markdown_to_html(markdown):
    mc = ctypes.create_string_buffer(markdown.encode("utf-8"))
    return cmark_markdown_to_html(mc, len(mc)-1, 0).decode("utf-8")


sys.stdout.write(markdown_to_html(sys.stdin.read().decode("utf-8")).encode("utf-8"))
__EOF__
)