DOWNLOAD

The DOWNLOAD file is there for unique situations where acquiring the source cannot be done by the supported methods provided by Sorcery.

The following is an example of a spell that offers either a stable version or an svn version of the source. The file also handles updating the source tarball if the source cache already exists. However, you can pass the -d flag to cast and the source will be deleted and a new check out will be performed. Finally, it is always a good idea to return whether the download succeeded or not.

Example DOWNLOAD file:

local success
local source_url=${SOURCE_URL/smgl_svn:\/\//}
message "${MESSAGE_COLOR}My *really* cool download handler${DEFAULT_COLOR}"
if [[ "$SVN_CO" == "y" ]] ; then
    if [[ $FORCE_DOWNLOAD ]] ; then
        message "${MESSAGE_COLOR}removing old source force download${DEFAULT_COLOR}" &&
        rm -f $SOURCE_CACHE/$SOURCE
    fi
    if [[ -f $SOURCE_CACHE/$SOURCE ]] ; then
        message "${MESSAGE_COLOR}extracting old tarball in $TMP_DIR${DEFAULT_COLOR}" &&
        cd $TMP_DIR &&
        tar -xjf $SOURCE_CACHE/$SOURCE &&
        cd ${SOURCE_DIRECTORY/$BUILD_DIRECTORY\//} &&
        message "${MESSAGE_COLOR}running svn update${DEFAULT_COLOR}" &&
        svn up &&
        message "${MESSAGE_COLOR}creating source tarball${DEFAULT_COLOR}" &&
        cd ../ &&
        tar -cjf $SOURCE ${SOURCE_DIRECTORY/$BUILD_DIRECTORY\//} &&
        mv $SOURCE $SOURCE_CACHE &&
        success="Yeah!"
    else
        message "${MESSAGE_COLOR}creating new tarball${DEFAULT_COLOR}" &&
        cd $TMP_DIR &&
        mkdir ${SOURCE_DIRECTORY/$BUILD_DIRECTORY\//} &&
        cd ${SOURCE_DIRECTORY/$BUILD_DIRECTORY\//} &&
        message "${MESSAGE_COLOR}running svn checkout${DEFAULT_COLOR}" &&
        svn co $source_url ./ &&
        message "${MESSAGE_COLOR}creating source tarball${DEFAULT_COLOR}" &&
        cd ../ &&
        tar -cjf $SOURCE ${SOURCE_DIRECTORY/$BUILD_DIRECTORY\//} &&
        mv $SOURCE $SOURCE_CACHE &&
        success="Yeah!"
    fi
else
    if [[ $FORCE_DOWNLOAD ]] ; then
        message "${MESSAGE_COLOR}removing old sources${DEFAULT_COLOR}" &&
        rm -f $SOURCE_CACHE/$SOURCE
        rm -f $SOURCE_CACHE/$SOURCE2
    fi
    [ ! -f $SOURCE_CACHE/$SOURCE  ] &&
    wget -O $SOURCE_CACHE/$SOURCE $SOURCE_URL
    [ ! -f $SOURCE_CACHE/$SOURCE2 ] &&
    wget -O $SOURCE_CACHE/$SOURCE2 $SOURCE2_URL
    success="Yup!"
fi

if [[ -z $success ]] ; then
    return 1
else
    return 0
fi

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DOWNLOAD