Add standalone BUCK build

Change-Id: Ib3799ea6d41f214ceec8548f115784cb6d4b4127

.buckconfig

diff --git a/.buckconfig b/.buckconfig
new file mode 100644
index 0000000..c897236
--- /dev/null
+++ b/.buckconfig
@@ -0,0 +1,13 @@
+[alias]
+  ref-protection = //:ref-protection
+  plugin = //:ref-protection
+
+[java]
+  src_roots = java, resources
+
+[project]
+  ignore = .git
+
+[cache]
+  mode = dir
+  dir = buck-out/cache

.gitignore

diff --git a/.gitignore b/.gitignore
index 68892bf..cedbcae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,11 @@
-/target
-/.classpath
-/.project
-/.settings/org.maven.ide.eclipse.prefs
-/.settings/org.eclipse.m2e.core.prefs
-/.idea
+buck-out/
+bucklets
+target/
+.buckd/
+.buckversion
+.classpath
+.project
+.settings/org.maven.ide.eclipse.prefs
+.settings/org.eclipse.m2e.core.prefs
+.idea
+.watchmanconfig

BUCK

diff --git a/BUCK b/BUCK
index 3351729..e0ae59e 100644
--- a/BUCK
+++ b/BUCK
@@ -1,3 +1,5 @@
+include_defs('//bucklets/gerrit_plugin.bucklet')
+
 gerrit_plugin(
   name = 'ref-protection',
   srcs = glob(['src/main/java/**/*.java']),
@@ -10,6 +12,11 @@
   ],
 )
 
+java_library(
+  name = 'classpath',
+  deps = [':ref-protection__plugin'],
+)
+
 java_test(
   name = 'ref-protection_tests',
   srcs = glob(['src/test/java/**/*.java']),

lib/gerrit/BUCK

diff --git a/lib/gerrit/BUCK b/lib/gerrit/BUCK
new file mode 100644
index 0000000..96d016a
--- /dev/null
+++ b/lib/gerrit/BUCK
@@ -0,0 +1,13 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+VER = '2.11'
+REPO = MAVEN_CENTRAL
+
+maven_jar(
+  name = 'plugin-api',
+  id = 'com.google.gerrit:gerrit-plugin-api:' + VER,
+  sha1 = 'be80ff991f7b9f8669b7a2a399003ec1ae69ed31',
+  license = 'Apache2.0',
+  attach_source = False,
+  repository = REPO,
+)

src/main/resources/Documentation/build.md

diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
new file mode 100644
index 0000000..4c31765
--- /dev/null
+++ b/src/main/resources/Documentation/build.md
@@ -0,0 +1,73 @@
+Build
+=====
+
+This plugin is built with Buck.
+
+Two build modes are supported: Standalone and in Gerrit tree. Standalone
+build mode is recommended, as this mode doesn't require local Gerrit
+tree to exist.
+
+Build standalone
+----------------
+
+Clone bucklets library:
+
+```
+  git clone https://gerrit.googlesource.com/bucklets
+
+```
+and link it to ref-protection directory:
+
+```
+  cd ref-protection && ln -s ../bucklets .
+```
+
+Add link to the .buckversion file:
+
+```
+  cd ref-protection && ln -s bucklets/buckversion .buckversion
+```
+
+Add link to the .watchmanconfig file:
+
+```
+  cd ref-protection && ln -s bucklets/watchmanconfig .watchmanconfig
+```
+
+To build the plugin, issue the following command:
+
+
+```
+  buck build plugin
+```
+
+The output is created in
+
+```
+  buck-out/gen/ref-protection.jar
+```
+
+Build in Gerrit tree
+--------------------
+
+Clone or link this plugin to the plugins directory of Gerrit's source
+tree, and issue the command:
+
+```
+  buck build plugins/ref-protection
+```
+
+The output is created in
+
+```
+  buck-out/gen/plugins/ref-protection/ref-protection.jar
+```
+
+This project can be imported into the Eclipse IDE:
+
+```
+  ./tools/eclipse/project.py
+```
+
+How to build the Gerrit Plugin API is described in the [Gerrit
+documentation](../../../Documentation/dev-buck.html#_extension_and_plugin_api_jar_files).