Adding upstream version 0.3.3.upstream/0.3.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/mdit_py_plugins/myst_role/index.py b/mdit_py_plugins/myst_role/index.py
new file mode 100644
index 0000000..53ef60e
--- /dev/null
+++ b/mdit_py_plugins/myst_role/index.py
@@ -0,0 +1,65 @@
+import re
+
+from markdown_it import MarkdownIt
+from markdown_it.common.utils import escapeHtml
+from markdown_it.rules_inline import StateInline
+
+VALID_NAME_PATTERN = re.compile(r"^\{([a-zA-Z0-9\_\-\+\:]+)\}")
+
+
+def myst_role_plugin(md: MarkdownIt):
+    """Parse ``{role-name}`content```"""
+    md.inline.ruler.before("backticks", "myst_role", myst_role)
+    md.add_render_rule("myst_role", render_myst_role)
+
+
+def myst_role(state: StateInline, silent: bool):
+
+    # check name
+    match = VALID_NAME_PATTERN.match(state.src[state.pos :])
+    if not match:
+        return False
+    name = match.group(1)
+
+    # check for starting backslash escape
+    try:
+        if state.srcCharCode[state.pos - 1] == 0x5C:  # /* \ */
+            # escaped (this could be improved in the case of edge case '\\{')
+            return False
+    except IndexError:
+        pass
+
+    # scan opening tick length
+    start = pos = state.pos + match.end()
+    try:
+        while state.src[pos] == "`":
+            pos += 1
+    except IndexError:
+        return False
+
+    tick_length = pos - start
+    if not tick_length:
+        return False
+
+    # search for closing ticks
+    match = re.search("`" * tick_length, state.src[pos + 1 :])
+    if not match:
+        return False
+    content = state.src[pos : pos + match.start() + 1].replace("\n", " ")
+
+    if not silent:
+        token = state.push("myst_role", "", 0)
+        token.meta = {"name": name}
+        token.content = content
+
+    state.pos = pos + match.end() + 1
+
+    return True
+
+
+def render_myst_role(self, tokens, idx, options, env):
+    token = tokens[idx]
+    name = token.meta.get("name", "unknown")
+    return (
+        '<code class="myst role">' f"{{{name}}}[{escapeHtml(token.content)}]" "</code>"
+    )