source: greenstone3/trunk/gs3-setup.sh@ 20219

# if this file is executed, /bin/sh is used, as we don't start with #!
# this should work under ash, bash, zsh, ksh, sh style shells.

#the purpose of this file is to check/set up the environment for greenstone3
#sorts out:
#  - gsdl3home
#  - java

# java_min_version gets passed to search4j as the minimum java version
java_min_version=1.5.0_00


function testSource(){

  if test "$0" != "`echo $0 | sed s/gs3-setup\.sh//`" ; then
  # if $0 contains "gs3-setup.sh" we've been run... $0 is shellname if sourced.
  # One exception is zsh has an option to set it temporarily to the script name
    if test -z "$ZSH_NAME" ; then
    # we aren't using zsh
     gsdl_not_sourced=true
   fi 
  fi

  if test -n "$gsdl_not_sourced" ; then
     echo "  Error: Make sure you source this script, not execute it. Eg:"
     echo "    $ source gs3-setup.sh"
     echo "  or"
     echo "    $ . gs3-setup.sh"
     echo "  not"
     echo "    $ ./gs3-setup.sh"
     unset gsdl_not_sourced
     exit 1
  fi

  if test ! -f gs3-setup.sh ; then
    echo "You must source the script from within the Greenstone home directory"
    return 1
  fi
  return 0
}

# if GSDL3SRCHOME is set, then we assume that we have already sourced the 
# script so don't do it again. UNLESS, GSDL3SRCHOME doesn't match the 
# current directory in which case it was a different gs3 installation, so lets
# do it now.x
function testAlreadySourced() {
  if [ ! -z "$GSDL3SRCHOME" ]; then 
    localgs3sourcehome="`pwd`"
    if [ "$GSDL3SRCHOME" == "$localgs3sourcehome" ]; then
    echo "Your environment is already set up for Greenstone3"
    return 1
    fi
    echo "Your environment was set up for Greenstone 3 in $GSDL3SRCHOME."
    echo "Overwriting that set up for the current Greenstone 3 in $localgs3sourcehome"
  fi
  return 0
}

function setGS3ENV() {

  echo "Setting up your environment for Greenstone3"
  ## main greenstone environment variables ##
  GSDL3SRCHOME="`pwd`"
  GSDL3HOME="$GSDL3SRCHOME/web"
  export GSDL3HOME
  export GSDL3SRCHOME

  GSDLOS=`uname -s | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
  # check for running bash under cygwin
  if test "`echo $GSDLOS | sed 's/cygwin//'`" != "$GSDLOS" ; then
    GSDLOS=windows
  fi 
  export GSDLOS
  echo "  - Exported GSDL3HOME, GSDL3SRCHOME and GSDLOS"

  #change this if external tomcat
  TOMCAT_HOME="$GSDL3SRCHOME/packages/tomcat"


  ## adjustments to users (existing) environment ##

  #PATH
  addtopath PATH "$GSDL3SRCHOME/bin/script"
  addtopath PATH "$GSDL3SRCHOME/bin"
  echo "  - Adjusted PATH"

  #MANPATH
  addtopath MANPATH "$GSDL3SRCHOME/doc/man"
  echo "  - Adjusted MANPATH"
 
  #CLASSPATH
  addtopath CLASSPATH "$GSDL3HOME/WEB-INF/classes"
  addtopath CLASSPATH "$GSDL3SRCHOME/resources/java"
  addtopath CLASSPATH "$GSDL3SRCHOME/cp.jar"

  # Tomcat 5 jar files
  for JARFILE in "$TOMCAT_HOME"/common/endorsed/*.jar; do
    addtopath CLASSPATH "$JARFILE"
  done    
  # Tomcat 6 jar files
  for JARFILE in "$TOMCAT_HOME"/lib/*.jar; do
    addtopath CLASSPATH "$JARFILE"
  done    
  
  #shouldn't need these as they will have been copied to their correct locations elsewhere in the greenstone3 installation
  #for JARFILE in "$GSDL3SRCHOME"/build/*.jar; do
  #  addtopath CLASSPATH "$JARFILE"
  #done

  addtopath CLASSPATH "."
  echo "  - Adjusted CLASSPATH"

  #LD_LIBRARY_PATH
  addtopath LD_LIBRARY_PATH "$GSDL3SRCHOME/lib/jni"
  addtopath DYLD_LIBRARY_PATH "$GSDL3SRCHOME/lib/jni"
  echo "  - Adjusted LD_LIBRARY_PATH and DYLD_LIBRARY_PATH"

  #ant
  if [ -x "$GSDL3SRCHOME/packages/ant/bin/ant" ]; then
    ANT_HOME="$GSDL3SRCHOME/packages/ant"
    export ANT_HOME
    addtopath PATH "$ANT_HOME/bin"
    echo "  - Setup Greenstone ant ($GSDL3SRCHOME/packages/ant)"
  else
    which ant &> /dev/null
    if [ "$?" == "0" ]; then
      echo "  - WARNING: Greenstone 'Ant' package missing - falling back to system Ant"
      echo "             Note that Greenstone requires Ant 1.7.1 or greater"
    else
      echo "  - ERROR: Greenstone 'Ant' package missing - please install Ant yourself"
      echo "           Note that Greenstone requires Ant 1.7.1 or greater"
    fi

  fi

}

function checkJava() {

  HINT="`pwd`/packages/jre"
  if [ $GSDLOS = darwin ]; then
        HINT=/System/Library/Frameworks/JavaVM.framework/Home
  fi

  #if search4j is present, use it
  if [ -x bin/search4j ] ; then
    FOUNDJAVAHOME="`bin/search4j -p \"$HINT\" -m $java_min_version`"
    if [ "$?" == "0" ]; then
      #found a suitible java
      setupJavaAt "$FOUNDJAVAHOME"
    else
      #no suitable java exists
      echo "  - ERROR: Failed to locate java $java_min_version or greater"
      echo "           Please set JAVA_HOME or JRE_HOME to point to an appropriate java"
      echo "           And add JAVA_HOME/bin or JRE_HOME/bin to your PATH"
    fi

  #otherwise manually try the hint
  elif [ -d "$HINT" ]; then
      #found a suitible java
      setupJavaAt "$HINT"

  #lastly, check if java already setup
  elif [ "$JAVA_HOME" != "" ] && [ "`which java`" == "$JAVA_HOME/bin/java" ]; then
    echo "  - Using java at $JAVA_HOME"
  elif [ "$JRE_HOME" != "" ] && [ "`which java`" == "$JRE_HOME/bin/java" ]; then
    echo "  - Using java at $JRE_HOME"
  #failing all that, print a warning
  else
    #no suitable java exists
    echo "  - ERROR: Failed to locate java"
    echo "           Please set JAVA_HOME or JRE_HOME to point to an appropriate java"
    echo "           And add JAVA_HOME/bin or JRE_HOME/bin to your PATH"
  fi
}

function setupJavaAt() {
  export JAVA_HOME="$1"
  addtopath PATH "$JAVA_HOME/bin"
  echo "  - Exported JAVA_HOME to $JAVA_HOME"
}

function pauseAndExit(){
 echo -n "Please press any key to continue... "
 read 
}

function isinpath() {
  for file in `echo $1 | sed 's/:/ /g'`; do
    if [ "$file" == "$2" ]; then
      echo true
      return
    fi
  done
  echo false
}

function addtopath() {
  eval "PV=\$$1"
  #echo "$1 += $2"
  if [ "$PV" == "" ]; then
    cmd="$1=\"$2\""
  else
    cmd="$1=\"$2:\$$1\""
  fi
  eval $cmd
  eval "export $1"
}

# Note: use return not exit from a sourced script otherwise it kills the shell
echo
testSource
if [ "$?" == "1" ]; then
return
fi
testAlreadySourced
if [ "$?" == "1" ]; then
return
fi
setGS3ENV
checkJava