1 files changed, 40 insertions, 0 deletions
diff --git a/markdown_it/common/html_re.py b/markdown_it/common/html_re.py
new file mode 100644
index 0000000..f0c336d
--- /dev/null
+++ b/markdown_it/common/html_re.py
@@ -0,0 +1,40 @@
+"""Regexps to match html elements
+"""
+
+import re
+
+attr_name = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
+
+unquoted = "[^\"'=<>`\\x00-\\x20]+"
+single_quoted = "'[^']*'"
+double_quoted = '"[^"]*"'
+
+attr_value = "(?:" + unquoted + "|" + single_quoted + "|" + double_quoted + ")"
+
+attribute = "(?:\\s+" + attr_name + "(?:\\s*=\\s*" + attr_value + ")?)"
+
+open_tag = "<[A-Za-z][A-Za-z0-9\\-]*" + attribute + "*\\s*\\/?>"
+
+close_tag = "<\\/[A-Za-z][A-Za-z0-9\\-]*\\s*>"
+comment = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
+processing = "<[?][\\s\\S]*?[?]>"
+declaration = "<![A-Z]+\\s+[^>]*>"
+cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
+
+HTML_TAG_RE = re.compile(
+    "^(?:"
+    + open_tag
+    + "|"
+    + close_tag
+    + "|"
+    + comment
+    + "|"
+    + processing
+    + "|"
+    + declaration
+    + "|"
+    + cdata
+    + ")"
+)
+HTML_OPEN_CLOSE_TAG_STR = "^(?:" + open_tag + "|" + close_tag + ")"
+HTML_OPEN_CLOSE_TAG_RE = re.compile(HTML_OPEN_CLOSE_TAG_STR)