#!/usr/bin/env bash
set -euo pipefail

rm -r stage0 || true
# don't copy untracked files
# `:!` is git glob flavor for exclude patterns
for f in $(git ls-files src ':!:src/lake/*' ':!:src/Leanc.lean'); do
    if [[ $f == *.lean ]]; then
        f=${f#src/}
        f=${f%.lean}.c
        mkdir -p $(dirname stage0/stdlib/$f)
        cp ${CP_C_PARAMS:-} $CSRCS/$f stage0/stdlib/$f
    else
        mkdir -p $(dirname stage0/$f)
        cp $f stage0/$f
    fi
done

# special handling for Lake files due to its nested directory
# copy the README to ensure the `stage0/src/lake` directory is committed
for f in $(git ls-files 'src/lake/Lake/*' src/lake/Lake.lean src/lake/LakeMain.lean src/lake/README.md ':!:src/lakefile.toml'); do
    if [[ $f == *.lean ]]; then
        f=${f#src/lake}
        f=${f%.lean}.c
        mkdir -p $(dirname stage0/stdlib/$f)
        cp ${CP_C_PARAMS:-} $CSRCS/$f stage0/stdlib/$f
    else
        mkdir -p $(dirname stage0/$f)
        cp $f stage0/$f
    fi
done

git add stage0