zulip/tools/setup/install-semgrep

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#!/usr/bin/env bash
set -e
version=0.10.1
tarball=semgrep-v$version-ubuntu-16.04.tgz
sha256=7d07d223e88d52a2e8886e748726e1c8488d8d81ced34b80b128c362d9b57a0a
tarball_url=https://github.com/returntocorp/semgrep/releases/download/v$version/$tarball
check_version () {
out="$(semgrep --version 2>/dev/null)" && [ "$out" = "$version" ]
}
if ! check_version; then
tmpdir="$(mktemp -d)"
trap 'rm -r "$tmpdir"' EXIT
cd "$tmpdir"
wget -nv "$tarball_url"
sha256sum -c <<< "$sha256 $tarball"
tar -xzf "$tarball" -C /usr/local/lib/ semgrep-files/
ln -sf /usr/local/lib/semgrep-files/semgrep /usr/local/bin/semgrep
ln -sf /usr/local/lib/semgrep-files/semgrep-core /usr/local/bin/semgrep-core
# Clean old files from sgrep 0.4.9b5.
rm -rf /usr/local/lib/sgrep-lint-files /usr/local/bin/sgrep-lint /usr/local/bin/sgrep
check_version
fi