Trimmomatic: flexible read trimming tool for Illumina NGS data
==============================================================

Galaxy tool wrapper for the Trimmomatic program, which provides various functions for
manipluating Illumina FASTQ files (both single and paired-end).

Trimmomatic has been developed within Bjorn Usadel's group at RWTH Aachen university
http://www.usadellab.org/cms/index.php?page=trimmomatic

The reference for Trimmomatic is:

- Bolger, A.M., Lohse, M., & Usadel, B. (2014). Trimmomatic: A flexible trimmer
  for Illumina Sequence Data. Bioinformatics, btu170.

Automated installation
======================

Installation via the Galaxy Tool Shed will take of installing the tool wrapper and
the trimmomatic program and data, and setting the appropriate environment variables.

Manual Installation
===================

There are two files to install:

- ``trimmomatic.xml`` (the Galaxy tool definition)
- ``trimmomatic.sh`` (the shell script wrapper)

The suggested location is in a ``tools/trimmomatic/`` folder. You will then
need to modify the ``tools_conf.xml`` file to tell Galaxy to offer the tool
by adding the line:

    <tool file="trimmomatic/trimmomatic.xml" />

You will also need to install trimmomatic 0.32:

- http://www.usadellab.org/cms/uploads/supplementary/Trimmomatic/Trimmomatic-0.32.zip

The tool wrapper uses the following environment variables in order to find the
appropriate files:

- ``TRIMMOMATIC_DIR`` should point to the directory holding the
  ``trimmomatic-0.32.jar`` file
- ``TRIMMOMATIC_ADAPTERS_DIR`` should point to the directory holding the adapter
  sequence files (used by the ``ILLUMINACLIP`` option).

If you want to run the functional tests, copy the sample test files under
sample test files under Galaxy's ``test-data/`` directory. Then:

    ./run_tests.sh -id trimmomatic

You will need to have set the environment variables above.

History
=======

========== ======================================================================
Version    Changes
---------- ----------------------------------------------------------------------
0.32.1     - Remove ``trimmomatic_adapters.loc.sample`` and hard-code adapter files
             into the XML wrapper.
0.32.0     - Add tool_dependencies.xml to install Trimmomatic 0.32 automatically and
             set the environment.
           - Update tool versioning to use Trimmomatic version number (i.e. ``0.32``)
             with tool iteration appended (i.e. ``.1``).
0.0.4      - Specify '-threads 6' in <command> section.
0.0.3      - Added MINLEN, LEADING, TRAILING, CROP and HEADCROP options of trimmomatic.
0.0.2      - Updated ILLUMINACLIP option to use standard adapter sequences (requires
             the trimmomatic_adapters.loc file; sample version is supplied) plus
             cosmetic updates to wording and help text for some options.
0.0.1      - Initial version
========== ======================================================================


Developers
==========

This tool is developed on the following GitHub repository:
https://github.com/fls-bioinformatics-core/galaxy-tools/tree/master/trimmomatic

For making the "Galaxy Tool Shed" http://toolshed.g2.bx.psu.edu/ tarball I use
the ``package_trimmomatic.sh`` script.


Licence (MIT)
=============

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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
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