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