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#!/bin/bash

export ERRFILE=$(mktemp)
export PATH="/usr/bin:/bin"
export REPOS="$1"
export TMPFILE=$(mktemp)
export TXN="$2"

svnlook changed -t "$TXN" "$REPOS" \
| awk '{print $2}' \
| \
while read LINE; do
   svnlook cat -t "$TXN" "$REPOS" "$LINE" > "$TMPFILE"

   if [ $? -ne 0 ]; then
      echo "Warning: Failed to checkout $LINE" >&2
   fi

   EXT=$(echo $LINE | awk -F'.' '{ print $NF }')

   case "$EXT" in
      "erb")
         erb -x -T '-' $TMPFILE | ruby -c

         if [ $? -ne 0 ]; then
            echo "ERB parsing error in $LINE:" >&2
            cat $ERRFILE >&2

            exit 2
         fi
      ;;
      "pp")
         /usr/bin/puppet --color=false --parseonly $TMPFILE >$ERRFILE 2>/dev/null

         if [ $? -ne 0 ]; then
            echo "Puppet syntax error in $LINE:" >&2
            cat $ERRFILE >&2

            exit 2
         fi
      ;; 
      "rb")
         ruby -c $TMPFILE >$ERRFILE 2>/dev/null

         if [ $? -ne 0 ]; then
            echo "Ruby syntax error in $LINE:" >&2
            cat $ERRFILE >&2

            exit 2
         fi
      ;;
      "sh")
         bash -n $TMPFILE >$ERRFILE 2>/dev/null

         if [ $? -ne 0 ]; then
            echo "Bash syntax error in $LINE:" >&2
            cat $ERRFILE >&2

            exit 2
         fi
      ;;
      *)
         continue
      ;;
   esac 

   rm -f "$ERRFILE" "$TMPFILE"
   exit 0 
done