get_requirements.sh

#!/bin/bash

# Description: Script to fetch requirements for building this project.
# Last-modified: 2013-02-20 14:31:57
#
# Note that this script is not perfect and does not handle all errors.
# Any improvements are welcome.


# Either Git or Subversion is needed to retrieve Theos.
GIT=$(type -P git)
SVN=$(type -P svn)
if [ -z "$GIT" -a -z "$SVN" ]; then
    echo "ERROR: This script requires either 'git' or 'svn' to be installed."
    exit 1
fi

# Either wget or curl is needed to download package list and ldid.
WGET=$(type -P wget)
CURL=$(type -P curl)
if [ -z "$WGET" -a -z "$CURL" ]; then
    echo "ERROR: This script requires either 'wget' or 'curl' to be installed."
    exit 1
fi

# Download Theos
echo "Checking for Theos..."
if [ -z "$THEOS" ]; then
    echo "Downloading Theos..."
    if [ ! -z "$GIT" ]; then
        git clone --quiet git://github.com/DHowett/theos.git theos
    else
        svn co http://svn.howett.net/svn/theos/trunk theos
    fi
else
    ln -sn "$THEOS" theos
fi

# Download ldid
echo "Checking for ldid..."
if [ -z "$(type -P ldid)" ]; then
    echo "Downloading ldid..."
    if [ "$(uname)" == "Darwin" ]; then
        if [ ! -z "$WGET" ]; then
            wget -q http://dl.dropbox.com/u/3157793/ldid
        else
            curl -s http://dl.dropbox.com/u/3157793/ldid > ldid
        fi
        mv ldid theos/bin/ldid
        chmod +x theos/bin/ldid
    else
        echo "... No pre-built version of ldid is available for your system."
        echo "... You will need to provide your own copy of ldid."
    fi
fi

# Check if .deb creation tools are available (optional)
echo "Checking for dpkg-deb..."
if [ -z "$(type -P dpkg-deb)" ]; then
    echo "... dpkg-deb not found."
    echo "... If you wish to create a .deb package, you will need the 'dpkg-deb' tool."
fi

echo "Done."