1 files changed, 96 insertions, 0 deletions
diff --git a/src/arrow/dev/release/test-helper.rb b/src/arrow/dev/release/test-helper.rb
new file mode 100644
index 000000000..8a272ddfe
--- /dev/null
+++ b/src/arrow/dev/release/test-helper.rb
@@ -0,0 +1,96 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+require "English"
+require "cgi/util"
+require "fileutils"
+require "find"
+require "json"
+require "open-uri"
+require "rexml/document"
+require "tempfile"
+require "tmpdir"
+
+module CommandRunnable
+  class Error < StandardError
+  end
+
+  def sh(*command_line, check_result: true)
+    if command_line[0].is_a?(Hash)
+      env = command_line.shift
+    else
+      env = {}
+    end
+    stdout = Tempfile.new("command-stdout.log")
+    stderr = Tempfile.new("command-stderr.log")
+    success = system(env, *command_line, out: stdout.path, err: stderr.path)
+    if check_result
+      unless success
+        message = "Failed to run: #{command_line.join(" ")}\n"
+        message << "stdout:\n #{stdout.read}\n"
+        message << "stderr:\n #{stderr.read}"
+        raise Error, message
+      end
+    end
+    stdout.read
+  end
+end
+
+module GitRunnable
+  include CommandRunnable
+
+  def git(*args)
+    if args[0].is_a?(Hash)
+      env = args.shift
+    else
+      env = {}
+    end
+    sh(env, "git", *args)
+  end
+
+  def git_current_commit
+    git("rev-parse", "HEAD").chomp
+  end
+
+  def git_tags
+    git("tags").lines(chomp: true)
+  end
+end
+
+module VersionDetectable
+  def detect_versions
+    top_dir = Pathname(__dir__).parent.parent
+    cpp_cmake_lists = top_dir + "cpp" + "CMakeLists.txt"
+    @snapshot_version = cpp_cmake_lists.read[/ARROW_VERSION "(.+?)"/, 1]
+    @release_version = @snapshot_version.gsub(/-SNAPSHOT\z/, "")
+    @so_version = compute_so_version(@release_version)
+    @next_version = @release_version.gsub(/\A\d+/) {|major| major.succ}
+    @next_snapshot_version = "#{@next_version}-SNAPSHOT"
+    @next_so_version = compute_so_version(@next_version)
+    r_description = top_dir + "r" + "DESCRIPTION"
+    @previous_version = r_description.read[/^Version: (.+?)\.9000$/, 1]
+  end
+
+  def compute_so_version(version)
+    major, minor, _patch = version.split(".")
+    Integer(major, 10) * 100 + Integer(minor, 10)
+  end
+
+  def on_release_branch?
+    @snapshot_version == @release_version
+  end
+end