Bash script for fixing subversion's "Working copy text base is corrupt" error

gistfile1.txt

#!/bin/bash
set -e


usage(){
 echo "Error $errcode $errorcode at line ${BASH_LINENO[0]} while executing: $BASH_COMMAND"
 exit $errorcode  
}
trap usage ERR

file="$1"

[ -f "$file" ] # must be a file


url=$(svn info "$file" | grep '^URL' | awk  '{print $2}')
root=$(svn info "$file" | grep '^Working Copy Root' | awk -F':' '{print $2}')
rev=$(svn info "$file" | grep '^Revision' | awk -F':' '{print $2}')

name="$(basename $url)"
dir="$(dirname $url)"

tmp="$(mktemp -d .tmp.XXX)"


echo "Doing fresh checkout for: $name"
echo "     URL: $dir"
echo "    dest: $tmp"
echo "     rev: $rev"

svn co -N -r $rev "$dir" "$tmp" >> /dev/null
hash=$(cd "$tmp" && sha1sum "$name" | awk '{print $1}')
corrupt=$(find ${root}/.svn/pristine -name $hash.svn-base)
svnbase=$(find ${tmp}/.svn/pristine -name $hash.svn-base) 

corrupt_sum=$(md5sum "$corrupt" | awk '{print $1}')
svnbase_sum=$(md5sum "$svnbase" | awk '{print $1}')

if [[ "$corrupt_sum" != "$svnbase_sum" ]]
then
  echo "Fixing .svn-base for $name"
  echo "  from: $corrupt_sum (corrupted)"
  echo "    to: $svnbase_sum (expected)"
  echo "   src: $svnbase"
  echo "  dest: $corrupt"
  cp $svnbase $corrupt
else
  echo "No corruption detected"
fi 

rm -rf "$tmp"