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#!/bin/bash
if [ $# -lt 3 ] ; then
echo
echo " Search svn revs for a rev that works"
echo
echo " usage: search-svn-revs start-rev end-rev run [ test ]"
echo
echo " 'start-rev' and 'end-rev' are svn revision numbers"
echo " 'run' is the script to run"
echo " 'test' is the script to test for (\$? == 0) success."
echo " if 'test' argument is not present, then the status from"
echo " 'run' argument is used for success / fail."
echo
echo " Note: The binary search algorithm can produce incorrect results if the range of"
echo " revisions contains more complex situations than: fail fail ... succeed suceed ..."
echo
exit 1
fi
highest_fail=$1
lowest_succeed=$2
export GS_LIB=$GS_LIB:./lib:/home/regression/fonts
while [ $(( $highest_fail + 1 )) -lt $lowest_succeed ]; do
test_rev=$(( ( ( $lowest_succeed - $highest_fail ) / 2 ) + $highest_fail ))
echo -e "checking rev: $test_rev. svn checkout ...\c"
svn export -q -r$test_rev svn+ssh://svn.ghostscript.com/svn/ghostscript/trunk/gs gs.$test_rev > /dev/null 2>&1
cd gs.$test_rev
echo -e "\b\b\bdone. autogen ...\c"
./autogen.sh > /dev/null 2>&1
echo -e "\b\b\bdone. make ...\c"
make > /dev/null 2>&1
status=$?
if [ $status -ne 0 ] ; then
echo -e "\b\b\bfailed."
else
if [ -f bin/gs ] ; then
echo -e "\b\b\bdone. run ...\c"
$3 > test.log 2>&1
status=$?
echo -e "\b\b\bdone, status=$status.\c"
if [ $# -gt 3 ] ; then
echo -e "test ...\c"
$4
status=$?
echo -e "\b\b\bdone, status=$status.\c"
fi
fi
fi
echo
cd ..
rm -fr gs.$test_rev
if [ $status -ne 0 ] ; then
highest_fail=$test_rev
else
lowest_succeed=$test_rev
fi
done
echo -e "\nFirst rev that succeeds is: $lowest_succeed"
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