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#!/bin/bash
# This script downloads and imports a revision of zstandard.
# It can be run on Linux, Mac OS X or Windows WSL.
# Actual integration into the build system is not done by this script.
#
# Turn on strict error checking, like perl use 'strict'
set -xeuo pipefail
IFS=$'\n\t'
if [ "$#" -ne 0 ]; then
echo "This script does not take any arguments"
exit 1
fi
GIT_EXE=git
if grep -q Microsoft /proc/version; then
GIT_EXE=git.exe
fi
NAME=zstandard
REVISION=1.4.3
if grep -q Microsoft /proc/version; then
SRC_ROOT=$(wslpath -u $(powershell.exe -Command "Get-ChildItem Env:TEMP | Get-Content | Write-Host"))
SRC_ROOT+="$(mktemp -u /zstandard.XXXXXX)"
mkdir -p $SRC_ROOT
else
SRC_ROOT=$(mktemp -d /tmp/zstandard.XXXXXX)
fi
SRC=${SRC_ROOT}/${NAME}_${REVISION}
CLONE_DEST=$SRC
if grep -q Microsoft /proc/version; then
CLONE_DEST=$(wslpath -m $SRC)
fi
DEST_DIR=$($GIT_EXE rev-parse --show-toplevel)/src/third_party/$NAME-$REVISION
PATCH_DIR=$($GIT_EXE rev-parse --show-toplevel)/src/third_party/$NAME-$REVISION/patches
if grep -q Microsoft /proc/version; then
DEST_DIR=$(wslpath -u "$DEST_DIR")
PATCH_DIR=$(wslpath -w $(wslpath -u "$PATCH_DIR"))
fi
echo "dest: $DEST_DIR"
echo "patch: $PATCH_DIR"
if [ ! -d $SRC ]; then
$GIT_EXE clone https://github.com/facebook/zstd.git $CLONE_DEST
pushd $SRC
$GIT_EXE checkout v$REVISION
popd
fi
test -d $DEST_DIR/zstd && rm -r $DEST_DIR/zstd
mkdir -p $DEST_DIR/zstd
mv $SRC/* $DEST_DIR/zstd
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