1 files changed, 42 insertions, 0 deletions
diff --git a/jni/ruby/tool/generic_erb.rb b/jni/ruby/tool/generic_erb.rb
new file mode 100644
index 0000000..6641b0e
--- /dev/null
+++ b/jni/ruby/tool/generic_erb.rb
@@ -0,0 +1,42 @@
+# -*- coding: us-ascii -*-
+require 'erb'
+require 'optparse'
+require 'fileutils'
+$:.unshift(File.dirname(__FILE__))
+require 'vpath'
+
+vpath = VPath.new
+timestamp = nil
+output = nil
+ifchange = nil
+source = false
+
+opt = OptionParser.new do |o|
+  o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
+  o.on('-o', '--output=PATH') {|v| output = v}
+  o.on('-c', '--[no-]if-change') {|v| ifchange = v}
+  o.on('-x', '--source') {source = true}
+  vpath.def_options(o)
+  o.order!(ARGV)
+end
+template = ARGV.shift or abort opt.to_s
+erb = ERB.new(File.read(template), nil, '%-')
+erb.filename = template
+result = source ? erb.src : erb.result
+if output
+  if ifchange and (vpath.open(output, "rb") {|f| f.read} rescue nil) == result
+    puts "#{output} unchanged"
+  else
+    open(output, "wb") {|f| f.print result}
+    puts "#{output} updated"
+  end
+  if timestamp
+    if timestamp == true
+      dir, base = File.split(output)
+      timestamp = File.join(dir, ".time." + base)
+    end
+    FileUtils.touch(timestamp)
+  end
+else
+  print result
+end