From 7fbc935d1cf7cc81d57601bdf5e446333f95a8c6 Mon Sep 17 00:00:00 2001
From: Ken Struys <ken@struys.ca>
Date: Fri, 14 Mar 2014 00:30:11 -0700
Subject: [PATCH] added node hooks setup and jshint

---
 .pre-commit-config.yaml         |  8 +++++++
 pre_commit/languages/helpers.py |  6 ++++++
 pre_commit/languages/node.py    | 37 +++++++++++++++++++++++++++++++--
 pre_commit/languages/python.py  |  6 ++----
 4 files changed, 51 insertions(+), 6 deletions(-)
 create mode 100644 pre_commit/languages/helpers.py

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 02c07989..1fc358a5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,3 +6,11 @@
         -
             id: pyflakes
             files: '*.py'
+
+-
+    repo: git@github.com:pre-commit/jshint
+    sha: 191734354d1191e3771c004c3e905a94728d0349
+    hooks:
+        -
+            id: jshint
+            files: '*.js'
\ No newline at end of file
diff --git a/pre_commit/languages/helpers.py b/pre_commit/languages/helpers.py
new file mode 100644
index 00000000..8397e9a8
--- /dev/null
+++ b/pre_commit/languages/helpers.py
@@ -0,0 +1,6 @@
+
+def run_hook(env, hook, file_args):
+    return env.run(
+        ' '.join([hook['entry']] + hook.get('args', []) + list(file_args)),
+        retcode=None,
+    )
\ No newline at end of file
diff --git a/pre_commit/languages/node.py b/pre_commit/languages/node.py
index e2e40da4..9f15f43f 100644
--- a/pre_commit/languages/node.py
+++ b/pre_commit/languages/node.py
@@ -1,7 +1,40 @@
+import contextlib
+from plumbum import local
+from plumbum.machines.session import ShellSession
+from pre_commit.languages import helpers
+
+from pre_commit.languages import python
+
+NODE_ENV = 'node_env'
+
+@contextlib.contextmanager
+def in_env():
+    with ShellSession(local['bash'].popen()) as env:
+        env.run('. {0}/bin/activate'.format(NODE_ENV))
+        yield env
+
 
 def install_environment():
-    raise NotImplementedError
+    assert local.path('package.json').exists()
+
+    if local.path('node_env').exists():
+        return
+
+    # Install a virtualenv
+    local['virtualenv'][python.PY_ENV]()
+
+    with python.in_env() as python_env:
+        python_env.run('pip install nodeenv')
+
+        print "Creating nodeenv"
+        local['nodeenv'][NODE_ENV]()
+        print "Done nodeenv"
+
+        with in_env() as node_env:
+            node_env.run('npm install -g')
 
 
 def run_hook(hook, file_args):
-    raise NotImplementedError
\ No newline at end of file
+    with python.in_env():
+        with in_env() as node_env:
+            return helpers.run_hook(node_env, hook, file_args)
\ No newline at end of file
diff --git a/pre_commit/languages/python.py b/pre_commit/languages/python.py
index 77819d1f..9626f108 100644
--- a/pre_commit/languages/python.py
+++ b/pre_commit/languages/python.py
@@ -2,6 +2,7 @@
 import contextlib
 from plumbum import local
 from plumbum.machines.session import ShellSession
+from pre_commit.languages import helpers
 
 PY_ENV = 'py_env'
 
@@ -30,7 +31,4 @@ def install_environment():
 def run_hook(hook, file_args):
     with in_env() as env:
         # TODO: batch filenames
-        return env.run(
-            ' '.join([hook['entry']] + hook.get('args', []) + list(file_args)),
-            retcode=None,
-        )
\ No newline at end of file
+        return helpers.run_hook(env, hook, file_args)
\ No newline at end of file