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@h8nor
Forked from rlee287/pre-commit.sh
Last active September 13, 2019 12:14
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Short git pre-commit hook to remove BOM headers desktop/desktop#3768
#!/bin/sh
#
# A hook script to remove BOM headers in Windows
echo "Running pre-commit BOM removal"
trap ctrl_c INT
ctrl_c ()
{
if [ -f $templist ]; then
rm $templist;
fi
if [ -f $checkam ]; then
rm $checkam
fi
if [ -f $statfile ]; then
rm $statfile
fi
exit
}
isBinary()
{
p=$(printf '%s\t-\t' -)
t=$(git diff --no-index --numstat /dev/null "$1")
case "$t" in "$p"*) return 0 ;; esac
return 1
}
templist=$(mktemp "/tmp/git_sed_remove.XXXXXXXX")
statfile=$(mktemp "/tmp/git_sed_remove.XXXXXXXX")
checkam=$(mktemp "/tmp/git_sed_remove.XXXXXXXX")
listchange=$(git diff --cached --name-only --diff-filter="AMRCB")
stat=$(git status --porcelain)
echo "${stat}" >> $statfile
awk 'match($1, "*M")' $statfile > $checkam
if [ -s $checkam ]; then
echo "Files have been modified since they were added"
echo "This script will add new modifications"
echo "Please add them first"
exit 1
fi
echo "${listchange}" > $templist
for file in $(cat $templist)
do
isBinary $file
if [ $? != 0 ]; then
echo "Checking text file $file"
sed --quiet '0,/^\xef\xbb\xbf/{//q8;}' $file
if [ $? = 8 ]; then
#remove UTF-8
echo "Stripping UTF-8 BOM headers from $file"
sed --in-place '1 s/^\xef\xbb\xbf//; s/$/\x0D/' $file
fi
sed --quiet '0,/^\xfe\xff/{//q16;}' $file
if [ $? = 16 ]; then
#remove UTF-16
echo "Stripping UTF-16 BOM headers from $file"
sed --in-place '1 s/^\xfe\xff//; s/$/\x0D/' $file
fi
git add $file &> /dev/null
else
echo "Skipped binary file $file"
fi
done
# If there are whitespace errors, print the offending file names and fail.
#exec git diff-index --check --cached $against --
ctrl_c
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