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#! /usr/bin/env nix-shell
#! nix-shell -i bash -p curl jq unzip
# shellcheck shell=bash
set -eu -o pipefail
# can be added to your configuration with the following command and snippet:
# $ ./pkgs/applications/editors/vscode/extensions/update_installed_exts.sh > extensions.nix
#
# packages = with pkgs;
# (vscode-with-extensions.override {
# vscodeExtensions = map
# (extension: vscode-utils.buildVscodeMarketplaceExtension {
# mktplcRef = {
# inherit (extension) name publisher version sha256;
# };
# })
# (import ./extensions.nix).extensions;
# })
# ]
# Helper to just fail with a message and non-zero exit code.
function fail() {
echo "$1" >&2
exit 1
}
# Helper to clean up after ourselves if we're killed by SIGINT.
function clean_up() {
TDIR="${TMPDIR:-/tmp}"
echo "Script killed, cleaning up tmpdirs: $TDIR/vscode_exts_*" >&2
rm -Rf "$TDIR/vscode_exts_*"
}
function get_vsixpkg() {
N="$1.$2"
# Create a tempdir for the extension download.
EXTTMP=$(mktemp -d -t vscode_exts_XXXXXXXX)
URL="https://$1.gallery.vsassets.io/_apis/public/gallery/publisher/$1/extension/$2/latest/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage"
# Quietly but delicately curl down the file, blowing up at the first sign of trouble.
curl --silent --show-error --retry 3 --fail -X GET -o "$EXTTMP/$N.zip" "$URL"
# Unpack the file we need to stdout then pull out the version
VER=$(jq -r '.version' <(unzip -qc "$EXTTMP/$N.zip" "extension/package.json"))
# Calculate the SHA
SHA=$(nix-hash --flat --base32 --type sha256 "$EXTTMP/$N.zip")
# Clean up.
rm -Rf "$EXTTMP"
# I don't like 'rm -Rf' lurking in my scripts but this seems appropriate.
cat <<-EOF
{
name = "$2";
publisher = "$1";
version = "$VER";
sha256 = "$SHA";
}
EOF
}
# See if we can find our `code` binary somewhere.
if [ $# -ne 0 ]; then
CODE=$1
else
CODE=$(command -v code || command -v codium)
fi
if [ -z "$CODE" ]; then
# Not much point continuing.
fail "VSCode executable not found"
fi
# Try to be a good citizen and clean up after ourselves if we're killed.
trap clean_up SIGINT
# Begin the printing of the nix expression that will house the list of extensions.
printf '{ extensions = [\n'
# Note that we are only looking to update extensions that are already installed.
for i in $($CODE --list-extensions)
do
OWNER=$(echo "$i" | cut -d. -f1)
EXT=$(echo "$i" | cut -d. -f2)
get_vsixpkg "$OWNER" "$EXT"
done
# Close off the nix expression.
printf '];\n}'
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