exec-artifact

#!/bin/bash
#
# Copyright 2014,2015 Evernote Corporation.
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#    http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# Executes a Java class in a Maven artifact, automatically resolving all dependencies
#
# usage: exec-artifact [OPTIONS] <artifactId:groupId:version> <mainClass> [<arg> ...]
#        exec-artifact --help
err=0

mavenOpts=""
while [ 1 ]; do
  o="$1"
  if [ -z "$o" -o "${o:0:1}" != "-" ]; then
    break
  fi
  
  shift
  case "$o" in
    -h | --help )
        err=1
        ;;
    -o | -U | -q | -X )
        mavenOpts+=" $o"
        ;;
    *) echo "Illegal option: $o" >&2
       exit 4
       ;;
  esac
done

artifact="$1"
mainClass="$2"

if [ $# -lt 2 ]; then
  err=1
elif [ -z "$artifact" -o -z "$mainClass" ]; then
  err=2
else
  echo "$artifact" | grep -c -q "[<>]"
  if [ $? -eq 0 ]; then
    err=3
  fi
fi

function html() {
  echo "$*" | sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g; s/"/\&quot;/g; s/'"'"'/\&#39;/g'
}

mainClass="$(html $mainClass)"

if [ "$err" -ne 0 ]; then
  cat <<EOT
Syntax: $(basename $0) [OPTIONS] <artifactId:groupId:version> <mainClass> [<arg> ...]

Executes a Java class in a Maven artifact, automatically resolving all dependencies

OPTIONS:
    -h, --help  Show this help
    -U          Forces a check for updated snapshots on remote repositories
    -q          Quiet output - only show errors
    -X          Produce execution debug output

Examples:
$(basename $0) com.evernote.iwana:iwana-extract:1.0-SNAPSHOT com.evernote.iwana.extract.ExtractTextApp
EOT
  exit $err
fi

shift 2
args=""
for a in "$@"; do
  arg="$(html $a)"
  args+="<argument>$arg</argument>"
done
read groupId artifactId version <<< $(echo "$artifact" | tr ":" " ")

f=$(mktemp /tmp/exec-artifact.XXXXXX)
cat >$f <<EOT
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.evernote.ai.tools</groupId>
  <artifactId>exec-artifact</artifactId>
  <version>1.0-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>$groupId</groupId>
      <artifactId>$artifactId</artifactId>
      <version>$version</version>
    </dependency>
  </dependencies>
  
  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <mainClass>$mainClass</mainClass>
          <arguments>
            $args
          </arguments>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>
EOT

mvn=$(which mvn)
if [ -z "$mvn" ]; then
  mvn=$(which mvn3)
fi

if [ -z "$mvn" ]; then
  echo "Please install Maven, and add it to your PATH (so we can execute mvn or mvn3)" >&2
  exit 10
fi

"$mvn" -q $mavenOpts -f "$f" exec:java
rm -f "$f"