From 655b7398b6784e65d4c39fbaa2e87a56ab046f1c Mon Sep 17 00:00:00 2001
From: Brian Seymour <imbrianseymour@gmail.com>
Date: Sat, 23 Jan 2021 14:59:07 -0600
Subject: [PATCH] add crystal

---
 lxc/executors/crystal | 5 +++++
 lxc/test_all_lxc      | 2 ++
 lxc/tests/crystal.cr  | 1 +
 lxc/versions          | 4 ++++
 shared/languages.json | 7 +++++++
 var/install.txt       | 9 +++++++++
 6 files changed, 28 insertions(+)
 create mode 100644 lxc/executors/crystal
 create mode 100644 lxc/tests/crystal.cr

diff --git a/lxc/executors/crystal b/lxc/executors/crystal
new file mode 100644
index 0000000..5530326
--- /dev/null
+++ b/lxc/executors/crystal
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+cd /tmp/$2
+crystal build code.code
+timeout -s KILL 3 xargs -a args.args -d '\n' ./code < stdin.stdin
diff --git a/lxc/test_all_lxc b/lxc/test_all_lxc
index bc77524..5d4c0f9 100755
--- a/lxc/test_all_lxc
+++ b/lxc/test_all_lxc
@@ -9,6 +9,8 @@ echo -n 'testing c = '
 ../../cli/execute c c.c
 echo -n 'testing cpp = '
 ../../cli/execute cpp cpp.cpp
+echo -n 'testing crystal = '
+../../cli/execute crystal crystal.cr
 echo -n 'testing csharp = '
 ../../cli/execute csharp csharp.cs
 echo -n 'testing deno = '
diff --git a/lxc/tests/crystal.cr b/lxc/tests/crystal.cr
new file mode 100644
index 0000000..1af2472
--- /dev/null
+++ b/lxc/tests/crystal.cr
@@ -0,0 +1 @@
+puts "good"
diff --git a/lxc/versions b/lxc/versions
index 1fbbaff..60b8fae 100755
--- a/lxc/versions
+++ b/lxc/versions
@@ -21,6 +21,10 @@ echo 'cpp'
 lxc-attach --clear-env -n piston -- /bin/bash -l -c "g++ --version"
 echo '---'
 
+echo 'crystal'
+lxc-attach --clear-env -n piston -- /bin/bash -l -c "crystal -v"
+echo '---'
+
 echo 'csharp'
 lxc-attach --clear-env -n piston -- /bin/bash -l -c "mcs --version"
 echo '---'
diff --git a/shared/languages.json b/shared/languages.json
index fe6fc67..4321329 100644
--- a/shared/languages.json
+++ b/shared/languages.json
@@ -38,6 +38,13 @@
             "c"
         ]
     },
+    {
+        "name": "crystal",
+        "aliases": [
+            "crystal"
+            "cr"
+        ]
+    },
     {
         "name": "lisp",
         "aliases": [
diff --git a/var/install.txt b/var/install.txt
index 857614b..cf0b207 100644
--- a/var/install.txt
+++ b/var/install.txt
@@ -222,6 +222,15 @@ cd Brainfuck-interpreter
 echo 'export PATH=$PATH:/opt/bf/Brainfuck-interpreter' >> /opt/.profile
 source /opt/.profile
 
+# install crystal
+# final binary: /opt/crystal/crystal-0.35.1-1/bin/crystal
+# get version: /opt/crystal/crystal-0.35.1-1/bin/crystal -v
+cd /opt && mkdir crystal && cd crystal
+wget https://github.com/crystal-lang/crystal/releases/download/0.35.1/crystal-0.35.1-1-linux-x86_64.tar.gz
+tar -xzf crystal-0.35.1-1-linux-x86_64.tar.gz
+echo 'export PATH="$PATH:/opt/crystal/crystal-0.35.1-1/bin:$PATH"' >> /opt/.profile
+source /opt/.profile
+
 # create runnable users and apply limits
 for i in {1..150}; do
     useradd -M runner$i