1 files changed, 60 insertions, 0 deletions
diff --git a/markdown_it/helpers/parse_link_title.py b/markdown_it/helpers/parse_link_title.py
new file mode 100644
index 0000000..842c83b
--- /dev/null
+++ b/markdown_it/helpers/parse_link_title.py
@@ -0,0 +1,60 @@
+"""Parse link title
+"""
+from ..common.utils import charCodeAt, unescapeAll
+
+
+class _Result:
+    __slots__ = ("ok", "pos", "lines", "str")
+
+    def __init__(self):
+        self.ok = False
+        self.pos = 0
+        self.lines = 0
+        self.str = ""
+
+    def __str__(self):
+        return self.str
+
+
+def parseLinkTitle(string: str, pos: int, maximum: int) -> _Result:
+    lines = 0
+    start = pos
+    result = _Result()
+
+    if pos >= maximum:
+        return result
+
+    marker = charCodeAt(string, pos)
+
+    # /* " */  /* ' */  /* ( */
+    if marker != 0x22 and marker != 0x27 and marker != 0x28:
+        return result
+
+    pos += 1
+
+    # if opening marker is "(", switch it to closing marker ")"
+    if marker == 0x28:
+        marker = 0x29
+
+    while pos < maximum:
+        code = charCodeAt(string, pos)
+        if code == marker:
+            title = string[start + 1 : pos]
+            title = unescapeAll(title)
+            result.pos = pos + 1
+            result.lines = lines
+            result.str = title
+            result.ok = True
+            return result
+        elif code == 0x28 and marker == 0x29:  # /* ( */  /* ) */
+            return result
+        elif code == 0x0A:
+            lines += 1
+        elif code == 0x5C and pos + 1 < maximum:  # /* \ */
+            pos += 1
+            if charCodeAt(string, pos) == 0x0A:
+                lines += 1
+
+        pos += 1
+
+    return result