1 files changed, 88 insertions, 0 deletions
diff --git a/cmark/test/cmark.py b/cmark/test/cmark.py
new file mode 100644
index 0000000000..f9200f3460
--- /dev/null
+++ b/cmark/test/cmark.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from ctypes import *
+from subprocess import Popen, PIPE
+import platform
+import os
+
+class cmark_mem(Structure):
+    _fields_ = [("calloc", c_void_p),
+                ("realloc", c_void_p),
+                ("free", CFUNCTYPE(None, c_void_p))]
+
+def pipe_through_prog(prog, text):
+    p1 = Popen(prog.split(), stdout=PIPE, stdin=PIPE, stderr=PIPE)
+    [result, err] = p1.communicate(input=text.encode('utf-8'))
+    return [p1.returncode, result.decode('utf-8'), err]
+
+def to_html(lib, text):
+    get_alloc = lib.cmark_get_default_mem_allocator
+    get_alloc.restype = POINTER(cmark_mem)
+    free_func = get_alloc().contents.free
+
+    markdown = lib.cmark_markdown_to_html
+    markdown.restype = POINTER(c_char)
+    markdown.argtypes = [c_char_p, c_size_t, c_int]
+
+    textbytes = text.encode('utf-8')
+    textlen = len(textbytes)
+    # 1 << 17 == CMARK_OPT_UNSAFE
+    cstring = markdown(textbytes, textlen, 1 << 17)
+    result = string_at(cstring).decode('utf-8')
+    free_func(cstring)
+
+    return [0, result, '']
+
+def to_commonmark(lib, text):
+    get_alloc = lib.cmark_get_default_mem_allocator
+    get_alloc.restype = POINTER(cmark_mem)
+    free_func = get_alloc().contents.free
+
+    parse_document = lib.cmark_parse_document
+    parse_document.restype = c_void_p
+    parse_document.argtypes = [c_char_p, c_size_t, c_int]
+
+    render_commonmark = lib.cmark_render_commonmark
+    render_commonmark.restype = POINTER(c_char)
+    render_commonmark.argtypes = [c_void_p, c_int, c_int]
+
+    free_node = lib.cmark_node_free
+    free_node.argtypes = [c_void_p]
+
+    textbytes = text.encode('utf-8')
+    textlen = len(textbytes)
+    node = parse_document(textbytes, textlen, 0)
+    cstring = render_commonmark(node, 0, 0)
+    result = string_at(cstring).decode('utf-8')
+    free_func(cstring)
+    free_node(node)
+
+    return [0, result, '']
+
+class CMark:
+    def __init__(self, prog=None, library_dir=None):
+        self.prog = prog
+        if prog:
+            prog += ' --unsafe'
+            self.to_html = lambda x: pipe_through_prog(prog, x)
+            self.to_commonmark = lambda x: pipe_through_prog(prog + ' -t commonmark', x)
+        else:
+            sysname = platform.system()
+            if sysname == 'Darwin':
+                libnames = [ "libcmark.dylib" ]
+            elif sysname == 'Windows':
+                libnames = [ "cmark.dll", "libcmark.dll" ]
+            else:
+                libnames = [ "libcmark.so" ]
+            if not library_dir:
+                library_dir = os.path.join("build", "src")
+            for libname in libnames:
+                candidate = os.path.join(library_dir, libname)
+                if os.path.isfile(candidate):
+                    libpath = candidate
+                    break
+            cmark = CDLL(libpath)
+            self.to_html = lambda x: to_html(cmark, x)
+            self.to_commonmark = lambda x: to_commonmark(cmark, x)
+