DGrep

Given a word and a directory, find all files which are descendants of the directory path and contain the word. Note that only exact words will match, for example the search word Scala will not match the line:

Written in Scala.

since it is broken down into the words: Written, in, Scala.

DGrep assumes that all files are UTF-8 encoded.

Getting started

To build the program:

$ sbt assembly

This will produce a fat-jar in target/scala-2.11/dgrep.jar.

To run the program from the root of the DGrep project:

$ java -jar target/scala-2.11/dgrep.jar Scala src/test/resources/wikipedia/prog/lang
src/test/resources/wikipedia/prog/lang/scala.da.txt
src/test/resources/wikipedia/prog/lang/scala.fr.txt
src/test/resources/wikipedia/prog/lang/scala.txt

This also shows an example output of the program.

To run the tests:

$ sbt test

To launch a virtual machine with Ubuntu 14.04 (requires that Vagrant and VirtualBox are installed on the host machine) and install all software required for running and testing DGrep:

host> vagrant up
# Then ssh into the vm
host> vagrant ssh
# Once inside the vm shell execute the install script
vm> sudo /vagrant/install-deps.sh

Options

The program supports the following options:

• -s Suppress error messages printed to stderr.
• -L Print only files not containing the search word.
• -n List the line number and content of all matching lines.

Licensing

This program is licensed under the Apache License, version 2. See the LICENSE file for details.

Certain test data is licensed under separate licenses as indicated in the README files at the root of each directory:

• Wikipedia documents
• Twitter's Effective Scala