Shell script to use Maven2 to build jar libraries

Invoke this bldjar with:
sudo -u maven /home/maven/bldjar $1 $2 $3 $4
Don't forget to add your user to the sudoers file.

> cat bldjar

#!/bin/sh
# ===================================================================
# This script builds a maven2 jar project, commits the new jar to CVS
# and optionally registers the new jar as a reusable library in maven.
# Alan Lupsha
# ====================================================================

# environment variables
export JAVA_HOME=/opt/SDK/jdk
export CVSROOT=/maven/cvsroot

PROJECT=$1
REGISTER_JAR=$2
GROUP=$3
ARTIFACT=$4
MAVEN_DIR=/home/maven
LAST_UPDATE="2009.02.04"
OK_TO_REGISTER_JAR="no"

check_user_arguments()
{
  if [ "$PROJECT" = "" ] ; then
     echo "[ALAN] You must pass the project name as an argument! ex: sudo -u maven /home/maven/bldjar my-abc"
     PROJECT="noProjectSpecified"
     RETURN_CODE=1
     OK_TO_REGISTER_JAR="no"
     exit $RETURN_CODE
  fi

  if [ "$REGISTER_JAR" = "registerjar" ] ; then
     if [ "$GROUP" = "" ] ; then
        echo "[ALAN] Error: invalid group. You asked to register the jar in group ->$GROUP<-"
        echo "[ALAN] Syntax: bldjar registerjar GROUP ARTIFACT"
        RETURN_CODE=1
        OK_TO_REGISTER_JAR="no"
        exit $RETURN_CODE
     else
        echo "[ALAN] Registering jar: group is ok: $GROUP"
     fi
     if [ "$ARTIFACT" = "" ] ; then
        echo "[ALAN] Error: invalid artifact. You asked to register the jar using artifact ->$ARTIFACT<-"
        echo "[ALAN] Syntax: bldjar registerjar GROUP ARTIFACT"
        RETURN_CODE=1
        OK_TO_REGISTER_JAR="no"
        exit $RETURN_CODE
     else
        echo "[ALAN] Registering jar: artifact is ok: $ARTIFACT"
        OK_TO_REGISTER_JAR="yes"
     fi
  else
     REGISTER_JAR="dontregisterjar"
  fi
  echo "[ALAN] Your saved arguments are: $PROJECT $REGISTER_JAR $GROUP $ARTIFACT"
}


set_up_directories()
{
  # set up the directories, copy source
  cd $MAVEN_DIR
  mkdir $MAVEN_DIR/projects/
  cd $MAVEN_DIR/projects
  cvs checkout $PROJECT
  cd $MAVEN_DIR/projects/$PROJECT/
  mkdir TEMP
  mv src/* TEMP/
  mkdir src/main/
  mkdir src/main/java
  mv TEMP/* src/main/java
}


perform_build()
{
  # perform the build
  /maven/maven-2.0.6/bin/mvn --offline clean package > $MAVEN_DIR/projects/$PROJECT/build.log
  cat $MAVEN_DIR/projects/$PROJECT/build.log
  cvs add -m 'your build log' build.log
  cvs commit -m 'your build log' build.log
}


commit_the_jar()
{
  # go into the target dir, there may or may NOT be something in there
  mkdir $MAVEN_DIR/projects/$PROJECT/target/
  cd $MAVEN_DIR/projects/$PROJECT/target/
  JAR_NAME=`ls *.jar`
  echo "[ALAN] Your jar file name is $JAR_NAME"

  # just in case this doesn't exist
  mkdir $MAVEN_DIR/projects/$PROJECT/dist/

  # if the jar already existed, commit it
  if [ -f "$MAVEN_DIR/projects/$PROJECT/dist/$JAR_NAME" ] ; then
     rm $MAVEN_DIR/projects/$PROJECT/dist/$JAR_NAME
     cp $MAVEN_DIR/projects/$PROJECT/target/$JAR_NAME $MAVEN_DIR/projects/$PROJECT/dist/
     cd $MAVEN_DIR/projects/$PROJECT/dist/
     cvs commit -m 'newly built' $JAR_NAME

  # if the jar is brand new, add it to CVS and commit it
  else
     echo "[ALAN] Adding new file to CVS - first time ever"
     cp $MAVEN_DIR/projects/$PROJECT/target/$JAR_NAME $MAVEN_DIR/projects/$PROJECT/dist/

     cd $MAVEN_DIR/projects/$PROJECT/dist/
     cvs add -m 'newly added' $JAR_NAME
     cvs commit -m 'newly-added now committed by bldjar script' $JAR_NAME
  fi
}

perform_cleanup()
{
  # clean up
  echo "[ALAN] Now cleaning up, removing $MAVEN_DIR/projects/$PROJECT/"
  rm -Rf $MAVEN_DIR/projects/$PROJECT/

  echo "[ALAN] Script version was last updated on: $LAST_UPDATE"
  echo "[ALAN] Any questions, comments, concerns? Email me at: "
}

register_jar_as_library()
{
  # check if we need to register the jar
  if [ "$OK_TO_REGISTER_JAR" = "yes" ] ; then
     echo "[ALAN] Now registering your jar as a dependency in the maven lib directory structure..."
     extract_rvl_from_jar_name
     /maven/maven-2.0.6/bin/mvn install:install-file  -DgroupId=$GROUP -DartifactId=$ARTIFACT -Dversion=$RVL -Dpackaging=jar -Dfile=$MAVEN_DIR/projects/$PROJECT/dist/$JAR_NAME
     echo "[ALAN] If the above registration was successful, don't forget to add this to your pom.xml:"
     echo "    <dependency>"
     echo "       <groupId>$GROUP</groupId>"
     echo "       <artifactId>$ARTIFACT</artifactId>"
     echo "       <version>$RVL</version>"
     echo "    </dependency>"
     echo " "
  else
     echo "[ALAN] I'm not registering your jar as a library. Syntax for that is: ./bldjar YOUR-PROJECT registerjar GROUP ARTIFACT"
  fi
}


extract_rvl_from_jar_name()
{
  STR=$JAR_NAME
  len=${#STR}
  REV=""
  for (( i=$len ; i>0 ; i-- ))
  do
          REV=$REV""${STR:$i-1:$i}
          STR=${STR%${STR:$i-1:$i}}
  done
  #echo "Reversed string $REV"
  #ex: raj.3.2.1-reganamytiruces-ped

  NAME=`echo $REV | cut -f1 -d'-'`
  #echo "$NAME"
  #ex: raj.3.2.1

  STR=$NAME
  len=${#STR}
  REV=""
  for (( i=$len ; i>0 ; i-- ))
  do
        REV=$REV""${STR:$i-1:$i}
        STR=${STR%${STR:$i-1:$i}}
  done
  #echo "Reversed string $REV"
  #ex: 1.2.3.jar

  FULLLEN=${#REV}
  ENDPOS=FULLLEN-4
  RVL=${REV:0:ENDPOS}
}


check_user_arguments
set_up_directories
perform_build
commit_the_jar
register_jar_as_library
perform_cleanup