jfensign · February 7, 2014 05:15 · Feb 7, 2014
diff --git a/simple_thumbnail b/simple_thumbnail
@@ -0,0 +1,53 @@
+Thumbnailer = ->
+
+  Thumbnailer = this
+
+  fs = require "fs"
+
+  cp = require "child_process"
+
+  path = require "path"
+
+  exec = cp.exec
+
+  enctype = "binary"
+
+  ###
+   doc_to_image opts, cb
+
+   opts = 
+     file_path: "/location/of/file/to/convert" #required
+     write_path
+  ###
+
+  @doc_to_image: (opts, cb) ->
+
+    filename = opts.file_path.replace path.extname opts.file_path, ".#{opts.convert_to}"
+
+    is_pdf = path.extname opts.file_path is "pdf"
+
+    commands = 
+      un: "unoconv --stdout #{opts.file_path} | "
+      gs: "gs -q -dNOPAUSE -dBATCH \
+           -dPDFFitPage -sDEVICE=#{opts.convert_to} \
+           -r144 -sOutputFile=%stdout \
+           #{if is_pdf then opts.file_path else '-_'}"
+
+    writable = fs.createWriteStream path.resolve(opts.write_to, filename),
+      flags: "w"
+      encoding: enctype
+      mode: 0o0777
+
+    child_process = exec "#{commands.un}#{commands.gs}",
+      encoding: enctype
+      maxBuffer: 5000 * 1024
+
+      writable.on "close", -> cb null, filename, writable
+
+      child_process.stdout.on "data", (chunk) -> writable.write chunk, enctype
+
+      child_process.stdout.on "close", -> writable.close()
+
+      child_process.stderr.on "data", (d) -> console.log d
+
+module.exports = new Thumbnailer()
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