From b0b6773395691f626ba3bad5d08f8847e2e959fe Mon Sep 17 00:00:00 2001
From: Evan Burkey <evan@burkey.co>
Date: Fri, 9 Sep 2022 11:13:53 -0700
Subject: [PATCH] update for macOS, 2015-08

---
 CMakeLists.txt       | 12 +++++++++--
 get_input.sh         |  8 +++----
 src/2015/08.c        | 51 +++++++++++++++++++++++++++++++++++++++-----
 src/advent_utility.c |  4 ++--
 4 files changed, 62 insertions(+), 13 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2524e84..f707083 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,12 +20,20 @@ file(COPY input DESTINATION ${CMAKE_BINARY_DIR})
 
 add_executable(advent ${SRC} ${SRC2015} ${SRC2016} ${SRC2017} ${SRC2018} ${SRC2019} ${SRC2020} ${SRC2021})
 
+if ((${CMAKE_SYSTEM_NAME} STREQUAL "Darwin"))
+	set(OPENSSL_ROOT_DIR /opt/homebrew/opt/openssl@3)
+endif()
+
 if ((${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD"))
 	target_link_libraries(advent PRIVATE flint)
 	target_include_directories(advent PRIVATE include lib/libflint/include lib/uthash/src)
-else()
+elseif ((${CMAKE_SYSTEM_NAME} STREQUAL "Linux"))
 	find_package(OpenSSL REQUIRED)
 	target_link_libraries(advent PRIVATE bsd flint ${OPENSSL_LIBRARIES})
 	target_include_directories(advent PRIVATE include lib/libflint/include lib/uthash/src ${OpenSSL_INCLUDE_DIR})
+else() # Basically MacOS/Darwin
+	set(OpenSSL_INCLUDE_DIR /opt/homebrew/opt/openssl@3/include)
+	find_package(OpenSSL REQUIRED)
+	target_link_libraries(advent PRIVATE flint ${OPENSSL_LIBRARIES})
+	target_include_directories(advent PRIVATE include lib/libflint/include lib/uthash/src ${OpenSSL_INCLUDE_DIR})
 endif()
-
diff --git a/get_input.sh b/get_input.sh
index 5dc3ecd..59bfebf 100755
--- a/get_input.sh
+++ b/get_input.sh
@@ -1,8 +1,8 @@
-#!/usr/bin/env bash
+#!/usr/bin/env zsh
 
 rm -rf input
 for year in {2015..2021}; do
-	mkdir -p input/$year
+	mkdir -p input/"$year"
 	for day in {1..25}; do
 		if [[ day -lt 10 ]]; then
 			d="0$day"
@@ -10,7 +10,7 @@ for year in {2015..2021}; do
 			d="$day"
 		fi
 		url="https://adventofcode.com/$year/day/$day/input"
-		curl --cookie "session=$1" $url | perl -pe 'chomp if eof' > input/$year/$d
+		curl --cookie "session=$1" $url | perl -pe 'chomp if eof' > "input/$year/$d"
 	done
-	touch input/$year/test
+	touch "input/$year/test"
 done
diff --git a/src/2015/08.c b/src/2015/08.c
index 7734647..dcd7dea 100644
--- a/src/2015/08.c
+++ b/src/2015/08.c
@@ -1,10 +1,51 @@
 #include <stdio.h>
-#include <stdlib.h>
+#include <string.h>
 
 #include "lfinput.h"
 
-void advent2015day08(void) {
-    char *input = get_input("input/2015/08");
-    printf("Solution for Day 08 of 2015 is not completed yet\n");
-    free(input);
+static size_t part_one(char** input, size_t sz) {
+    size_t code = 0, mem = 0;
+
+    for (size_t i = 0; i < sz; ++i) {
+        code += strlen(input[i]);
+        for (size_t j = 1; j < strlen(input[i]) - 1; ++j) {
+            if (input[i][j] == '\\') {
+                if (input[i][j + 1] == '\"' || input[i][j + 1] == '\\') {
+                    ++j;
+                } else {
+                    j += 3;
+                }
+            }
+            ++mem;
+        }
+    }
+
+    return code - mem;
+}
+
+static size_t part_two(char** input, size_t sz) {
+    size_t code = 0, encoded = 0;
+
+    for (size_t i = 0; i < sz; ++i) {
+        code += strlen(input[i]);
+        encoded += 6;
+        for (size_t j = 1; j < strlen(input[i]) - 1; ++j) {
+            if (input[i][j] == '\\' || input[i][j] == '\"') {
+                ++encoded;
+            }
+            ++encoded;
+        }
+    }
+
+    return encoded - code;
+}
+
+void advent2015day08(void) {
+    size_t sz = 0;
+    char **input = get_lines("input/2015/08", &sz);
+
+    printf("%zu\n", part_one(input, sz));
+    printf("%zu\n", part_two(input, sz));
+
+    del_lines(input);
 }
diff --git a/src/advent_utility.c b/src/advent_utility.c
index 82f1d3c..34fd95f 100644
--- a/src/advent_utility.c
+++ b/src/advent_utility.c
@@ -2,7 +2,7 @@
 #include <string.h>
 #include <stdio.h>
 
-#ifdef __linux__
+#if defined __linux__ || defined __APPLE__
 
 #include <openssl/md5.h>
 
@@ -40,7 +40,7 @@ int same_Point_v(const void *a, const void *b) {
 char *md5_str(const char *input) {
     unsigned char digest[16];
 
-#ifdef __linux__
+#if defined __linux__ || defined __APPLE__
     MD5_CTX context;
     MD5_Init(&context);
     MD5_Update(&context, input, strlen(input));