Skip to content

Instantly share code, notes, and snippets.

@notriddle
Last active February 15, 2022 21:34
Show Gist options
  • Save notriddle/8c0e0892ca1ac0d24d1539656282b035 to your computer and use it in GitHub Desktop.
Save notriddle/8c0e0892ca1ac0d24d1539656282b035 to your computer and use it in GitHub Desktop.
A basic script I wrote for myself to compare package versions
#!/bin/bash
print-usage-and-die() {
echo "Usage: diffpkg.bash [cargo|npm] [pkg1] [pkg2]"
echo " pkg1 and pkg2 can have formats NAME-VERS, NAME@VERS, NAME:VERS, or NAME=VERS"
exit 1
}
extract-name() {
case "$1" in
*@*)
echo "$1" | awk -F@ '{print $1}'
;;
*=*)
echo "$1" | awk -F= '{print $1}'
;;
*:*)
echo "$1" | awk -F: '{print $1}'
;;
*-*)
echo "$1" | awk -F- '{print $1}'
;;
*) print-usage-and-die ;;
esac
}
extract-vers() {
case "$1" in
*@*)
echo "$1" | awk -F@ '{print $(NF)}'
;;
*=*)
echo "$1" | awk -F= '{print $(NF)}'
;;
*:*)
echo "$1" | awk -F: '{print $(NF)}'
;;
*-*)
echo "$1" | awk -F- '{print $(NF)}'
;;
*) print-usage-and-die ;;
esac
}
case "$1" in
cargo)
type cargo-download 2>&1 > /dev/null || cargo install cargo-download
name1=$(extract-name $2)
vers1=$(extract-vers $2)
name2=$(extract-name $3)
vers2=$(extract-vers $3)
set -ex
cargo download $name1==$vers1 > $name1-$vers1.tgz
tar -xf $name1-$vers1.tgz
cargo download $name2==$vers2 > $name2-$vers2.tgz
tar -xf $name2-$vers2.tgz
;;
npm)
type cargo-download 2>&1 > /dev/null || cargo install cargo-download
name1=$(extract-name $2)
vers1=$(extract-vers $2)
name2=$(extract-name $3)
vers2=$(extract-vers $3)
set -ex
npm pack $name1@$vers1
tar -xf $name1-$vers1.tgz
mv package $name1-$vers1
npm pack $name2@$vers2
tar -xf $name2-$vers2.tgz
mv package $name2-$vers2
;;
*) print-usage-and-die ;;
esac
diff -ur $name1-$vers1 $name2-$vers2
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment