Mavenizer script

mavenizer.sh

#!/bin/bash

DEFAULT_JAR_FOLDER='src/main/webapp/WEB-INF/lib'
DEFAULT_JAR_PATTERN='*.jar'
DELETE=no

HELP="Usage: $(basename "$0") [--delete] [jar folder/file] [pattern]

Looks up jar files on Maven central using their hash and outputs dependency
elements for the pom.xml.

Options:
    --delete    deletes the jar when found
    --help      shows this message

Defaults:
    folder:     ${DEFAULT_JAR_FOLDER}
    pattern:    ${DEFAULT_JAR_PATTERN}
"

function list {
    find "${1:-$DEFAULT_JAR_FOLDER}" -iname "${2:-$DEFAULT_JAR_PATTERN}"
}

function search {
    local jar sha1 url found

    while read jar; do

        sha1="$(sha1sum $jar | cut -f 1 -d ' ')"

        url='http://search.maven.org/solrsearch/select?q=1%3A%22'$sha1'%22&rows=20&wt=json'

        found=$(wget -q "$url" -O - | jq .response.docs[0].id | jq -e -r 'select(type == "string")')

        if [ $? == 0 ]; then
           echo "$found"
           if [ "$DELETE" = yes ]; then
               rm "$jar"
           fi
        fi
    done
}

function toXml {
    local found mvnid
    while read found; do

        IFS=':' read -ra mvnid <<< "$found"

        echo '    <dependency>'
        echo "        <groupId>${mvnid[0]}</groupId>"
        echo "        <artifactId>${mvnid[1]}</artifactId>"
        echo "        <version>${mvnid[2]}</version>"
        echo '    </dependency>'

    done
}

function main {
    list $1 $2 | search | sort | toXml
}

# parse arguments
OPTS=$(getopt -o "" -l delete -l help -- "$@") || (echo "$HELP" >&2; exit 1)

eval set -- "$OPTS"

while [ $1 != "--" ]; do
    case "$1" in
        --delete)
            DELETE='yes'
            ;;
        --help)
            echo "$HELP"
            exit 0
            ;;
    esac
    shift
done
shift # eat "--"

[ -r "${1-DEFAULT_JAR_FOLDER}" ] || (echo "Error: path not readable: $1" >&2; exit 1)

main ${@}