1 files changed, 54 insertions, 0 deletions
diff --git a/markdown_it/rules_block/hr.py b/markdown_it/rules_block/hr.py
new file mode 100644
index 0000000..804cd9d
--- /dev/null
+++ b/markdown_it/rules_block/hr.py
@@ -0,0 +1,54 @@
+"""Horizontal rule
+
+At least 3 of these characters on a line * - _
+"""
+import logging
+
+from ..common.utils import isSpace
+from .state_block import StateBlock
+
+LOGGER = logging.getLogger(__name__)
+
+
+def hr(state: StateBlock, startLine: int, endLine: int, silent: bool):
+
+    LOGGER.debug("entering hr: %s, %s, %s, %s", state, startLine, endLine, silent)
+
+    pos = state.bMarks[startLine] + state.tShift[startLine]
+    maximum = state.eMarks[startLine]
+
+    # if it's indented more than 3 spaces, it should be a code block
+    if state.sCount[startLine] - state.blkIndent >= 4:
+        return False
+
+    marker = state.srcCharCode[pos]
+    pos += 1
+
+    # Check hr marker: /* * */ /* - */ /* _ */
+    if marker != 0x2A and marker != 0x2D and marker != 0x5F:
+        return False
+
+    # markers can be mixed with spaces, but there should be at least 3 of them
+
+    cnt = 1
+    while pos < maximum:
+        ch = state.srcCharCode[pos]
+        pos += 1
+        if ch != marker and not isSpace(ch):
+            return False
+        if ch == marker:
+            cnt += 1
+
+    if cnt < 3:
+        return False
+
+    if silent:
+        return True
+
+    state.line = startLine + 1
+
+    token = state.push("hr", "hr", 0)
+    token.map = [startLine, state.line]
+    token.markup = chr(marker) * (cnt + 1)
+
+    return True