From f123e64c2579da3e9bf4d1464845acadbfb2ae54 Mon Sep 17 00:00:00 2001
From: Anthony Sottile <asottile@umich.edu>
Date: Fri, 14 Mar 2014 10:45:00 -0700
Subject: [PATCH] Ruby should work now

---
 .pre-commit-config.yaml      | 10 +++++++++-
 pre_commit/languages/ruby.py | 33 +++++++++++++++++++++++++++++++--
 scripts/__rvm-env.sh         | 19 +++++++++++++++++++
 setup.py                     |  5 ++++-
 4 files changed, 63 insertions(+), 4 deletions(-)
 create mode 100755 scripts/__rvm-env.sh

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1fc358a5..2e2af43b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,4 +13,12 @@
     hooks:
         -
             id: jshint
-            files: '*.js'
\ No newline at end of file
+            files: '*.js'
+
+-
+    repo: git@github.com:pre-commit/scss-lint
+    sha: 425536b1b77d9e836068edde4fb3101bea6e7dd8
+    hooks:
+        -
+            id: scss-lint
+            files: '*.scss'
diff --git a/pre_commit/languages/ruby.py b/pre_commit/languages/ruby.py
index e2e40da4..361ba13f 100644
--- a/pre_commit/languages/ruby.py
+++ b/pre_commit/languages/ruby.py
@@ -1,7 +1,36 @@
 
+import contextlib
+from plumbum import local
+
+from pre_commit.languages import helpers
+
+
+RVM_ENV = 'rvm_env'
+
+
+class RubyEnv(object):
+    def __init__(self):
+        self.env_prefix = '. {0}/.rvm/scripts/rvm'.format(RVM_ENV)
+
+    def run(self, cmd, **kwargs):
+        return local['bash']['-c', ' '.join([self.env_prefix, cmd])].run(**kwargs)
+
+
+@contextlib.contextmanager
+def in_env():
+    yield RubyEnv()
+
+
 def install_environment():
-    raise NotImplementedError
+    # Return immediately if we already have a virtualenv
+    if local.path(RVM_ENV).exists():
+        return
+
+    local['__rvm-env.sh'][RVM_ENV]()
+    with in_env() as env:
+        env.run('bundle install')
 
 
 def run_hook(hook, file_args):
-    raise NotImplementedError
\ No newline at end of file
+    with in_env() as env:
+        return helpers.run_hook(env, hook, file_args)
\ No newline at end of file
diff --git a/scripts/__rvm-env.sh b/scripts/__rvm-env.sh
new file mode 100755
index 00000000..d4dbd567
--- /dev/null
+++ b/scripts/__rvm-env.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+if [ $# -ne 1 ] || [ $1 = "--help" ] || [ $1 = "-h" ]; then
+    echo "usage: $0 RVM_ENV_DIR [--help]"
+    echo "    RVM_ENV_DIR - Directory to create rvm environment in"
+    exit 1
+fi
+
+
+# Get the rvm installer.  This is a known version that works reasonably well
+RVM_INSTALLER=https://raw.github.com/wayneeseguin/rvm/d80282de1f2b2b1ff51740e05d9f5d84ebf3209f/binscripts/rvm-installer
+
+env_dir=$1
+mkdir "$env_dir" || exit 1
+full_env_dir=`pwd`"/$env_dir"
+
+
+\curl -L "$RVM_INSTALLER" | HOME=$full_env_dir bash -s -- stable --user-install --ignore-dotfiles || exit 1
+bash -c '. '"$env_dir"'/.rvm/scripts/rvm && rvm install ruby' || exit 1
diff --git a/setup.py b/setup.py
index cb17fcdf..c50827d5 100644
--- a/setup.py
+++ b/setup.py
@@ -23,5 +23,8 @@ setup(
             'validate-config = pre_commit.entry_points:validate_config_func',
             'validate-manifest = pre_commit.entry_points:validate_manifest_func',
         ],
-    }
+    },
+    scripts=[
+        'scripts/__rvm-env.sh',
+    ],
 )