From 3fe9555cb1c044cde9fb155d9052cf9d870be8dc Mon Sep 17 00:00:00 2001
From: Mikael CAPELLE <capelle.mikael@gmail.com>
Date: Fri, 5 Jan 2024 10:01:02 +0100
Subject: [PATCH] 2015 day 8.

---
 src/holt59/aoc/2015/day7.py                |   2 +-
 src/holt59/aoc/2015/day8.py                |  35 +++
 src/holt59/aoc/inputs/holt59/2015/day8.txt | 300 +++++++++++++++++++++
 src/holt59/aoc/inputs/tests/2015/day8.txt  |   4 +
 4 files changed, 340 insertions(+), 1 deletion(-)
 create mode 100644 src/holt59/aoc/2015/day8.py
 create mode 100644 src/holt59/aoc/inputs/holt59/2015/day8.txt
 create mode 100644 src/holt59/aoc/inputs/tests/2015/day8.txt

diff --git a/src/holt59/aoc/2015/day7.py b/src/holt59/aoc/2015/day7.py
index cac56a1..a6e3fe5 100644
--- a/src/holt59/aoc/2015/day7.py
+++ b/src/holt59/aoc/2015/day7.py
@@ -2,7 +2,7 @@ import logging
 import operator
 import os
 import sys
-from typing import Callable, Literal, TypeAlias, cast
+from typing import Callable
 
 VERBOSE = os.getenv("AOC_VERBOSE") == "True"
 logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
diff --git a/src/holt59/aoc/2015/day8.py b/src/holt59/aoc/2015/day8.py
new file mode 100644
index 0000000..be22c22
--- /dev/null
+++ b/src/holt59/aoc/2015/day8.py
@@ -0,0 +1,35 @@
+import logging
+import os
+import sys
+
+VERBOSE = os.getenv("AOC_VERBOSE") == "True"
+logging.basicConfig(level=logging.INFO if VERBOSE else logging.WARNING)
+
+
+lines = sys.stdin.read().splitlines()
+
+answer_1 = sum(
+    # left and right quotes (not in memory)
+    2
+    # each \\ adds one character in the literals (compared to memory)
+    + line.count(R"\\")
+    # each \" adds one character in the literals (compared to memory)
+    + line[1:-1].count(R"\"")
+    # each \xFF adds 3 characters in the literals (compared to memory), but we must not
+    # count A\\x (A != \), but we must count A\\\x (A != \) - in practice we should also
+    # avoid \\\\x, etc., but this does not occur in the examples and the actual input
+    + 3 * (line.count(R"\x") - line.count(R"\\x") + line.count(R"\\\x"))
+    for line in lines
+)
+print(f"answer 1 is {answer_1}")
+
+answer_2 = sum(
+    # needs to wrap in quotes (2 characters)
+    2
+    # needs to escape every \ with an extra \
+    + line.count("\\")
+    # needs to escape every " with an extra \ (including the first and last ones)
+    + line.count('"')
+    for line in lines
+)
+print(f"answer 2 is {answer_2}")
diff --git a/src/holt59/aoc/inputs/holt59/2015/day8.txt b/src/holt59/aoc/inputs/holt59/2015/day8.txt
new file mode 100644
index 0000000..0e80d0f
--- /dev/null
+++ b/src/holt59/aoc/inputs/holt59/2015/day8.txt
@@ -0,0 +1,300 @@
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diff --git a/src/holt59/aoc/inputs/tests/2015/day8.txt b/src/holt59/aoc/inputs/tests/2015/day8.txt
new file mode 100644
index 0000000..3d32fb3
--- /dev/null
+++ b/src/holt59/aoc/inputs/tests/2015/day8.txt
@@ -0,0 +1,4 @@
+""
+"abc"
+"aaa\"aaa"
+"\x27"