From 74e6f786752e2cb924382e8957d381da86eeaa62 Mon Sep 17 00:00:00 2001
From: anon <anon@anon.anon>
Date: Sun, 27 Aug 2023 15:24:45 +0200
Subject: [PATCH] gdb regex_t pretty printer because vector_t was a footgun

---
 debug/regex.pretty_print.py | 54 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 debug/regex.pretty_print.py

diff --git a/debug/regex.pretty_print.py b/debug/regex.pretty_print.py
new file mode 100644
index 0000000..86ac1b0
--- /dev/null
+++ b/debug/regex.pretty_print.py
@@ -0,0 +1,54 @@
+class RegexPrinter:
+	def __init__(self, val):
+		self.val = val
+	def to_string(self):
+		# Init
+		s = "{"
+		#   Regular shit
+		s += "accepting_state = " + str(self.val['accepting_state']) + ", str = " + str(self.val['str']) + ",\n"
+		#   Delta
+		delta_t_ptr_ptr = gdb.lookup_type("delta_t").pointer().pointer()
+		dt = self.val['delta_table']
+		s += "delta_table = {\n"
+		for i in range(0, dt['element_count']):
+			s += "\t"
+			s += (
+					str(
+						(
+							dt['data'].cast(delta_t_ptr_ptr)
+								+
+							i
+						).dereference().dereference()
+					)
+				)
+			s += ",\n"
+		s = s[:-2]
+		s += "\n  },\n"
+		#   Offshoot
+		offshoot_t_ptr_ptr = gdb.lookup_type("offshoot_t").pointer().pointer()
+		dt = self.val['delta_table']
+		s += "offshoot_table = {\n"
+		for i in range(0, dt['element_count']):
+			s += "\t"
+			s += (
+					str(
+						(
+							dt['data'].cast(offshoot_t_ptr_ptr)
+								+
+							i
+						).dereference().dereference()
+					)
+				)
+			s += ",\n"
+		s = s[:-2]
+		s += "\n  }\n"
+		# Closour
+		s += "}"
+		return s
+
+def regex_lookup(val):
+	if str(val.type) == 'regex_t' or str(val.type) == 'const regex_t':
+		return RegexPrinter(val)
+	return None
+
+gdb.pretty_printers.append(regex_lookup)