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#!/usr/bin/env bash
#
# This script will generate the test corpus for CR/LF data using git;
# we create files with all possible line ending varieties (all LF, all
# CRLF, mixed, etc) on all the possible line ending configurations
# (`core.autocrlf=true`, `text=auto` in gitattributes, etc). This
# allows us to validate that our configuration will match byte-for-byte
# the configuration that git produces.
#
# To update the test resource data, from the test resource directory:
# git rm -r ./crlf_data/{posix,windows}
# sh ./generate_crlf.sh ./crlf ./crlf_data /tmp/crlf_gitdirs
# git add ./crlf_data/{posix,windows}
set -e
if [ "$1" == "" -o "$2" == "" ]; then
echo "usage: $0 crlfrepo directory [tempdir]"
exit 1
fi
input=$1
output=$2
tempdir=$3
set -u
create_to_workdir_data() {
local input=$1
local output=$2
local tempdir=$3
local systype=$4
local autocrlf=$5
local attr=$6
local worktree="${output}/${systype}_to_workdir/autocrlf_${autocrlf}"
if [ "$attr" != "" ]; then
local attrdir=`echo $attr | sed -e "s/ /,/g" | sed -e "s/=/_/g"`
worktree="${worktree},${attrdir}"
fi
if [ "$tempdir" = "" ]; then
local gitdir="${worktree}/.git"
else
local gitdir="${tempdir}/generate_crlf_${RANDOM}"
fi
echo "Creating ${worktree}"
mkdir -p "${worktree}"
git clone --no-checkout --quiet --bare "${input}/.gitted" "${gitdir}"
git --work-tree="${worktree}" --git-dir="${gitdir}" config core.autocrlf ${autocrlf}
if [ "$attr" != "" ]; then
echo "* ${attr}" >> "${worktree}/.gitattributes"
fi
git --work-tree="${worktree}" --git-dir="${gitdir}" checkout HEAD
if [ "$attr" != "" ]; then
rm "${worktree}/.gitattributes"
fi
if [ "$tempdir" != "" ]; then
rm -rf "${gitdir}"
fi
}
if [[ `uname -s` == MINGW* ]]; then
systype="windows"
else
systype="posix"
fi
for autocrlf in true false input; do
for attr in "" text text=auto -text crlf -crlf eol=lf eol=crlf \
"text eol=lf" "text eol=crlf" \
"text=auto eol=lf" "text=auto eol=crlf"; do
create_to_workdir_data "${input}" "${output}" "${tempdir}" \
"${systype}" "${autocrlf}" "${attr}"
done
done
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