#! /bin/sh -e url=$1 rev=$2 expHash=$3 hashType=$NIX_HASH_ALGO if test -z "$hashType"; then hashType=sha256 fi if test -z "$hashFormat"; then hashFormat=--base32 fi if test -z "$url"; then echo "syntax: nix-prefetch-bzr URL [REVISION [EXPECTED-HASH]]" >&2 exit 1 fi revarg="-r $rev" test -n "$rev" || revarg="" repoName=$(echo $url | sed ' s,.*/\([^/]\+\)/trunk/*$,\1,;t s,.*/\([^/]\+\)/branches/\([^/]\+\)/*$,\1-\2,;t s,.*/\([^/]\+\)/tags/\([^/]\+\)/*$,\1-\2,;t s,.*/\([^/]\+\)/*$,\1,;t ') dstFile="bzr-export" # If the hash was given, a file with that hash may already be in the # store. if test -n "$expHash"; then finalPath=$(nix-store --print-fixed-path --recursive "$hashType" "$expHash" $dstFile) if ! nix-store --check-validity "$finalPath" 2> /dev/null; then finalPath= fi hash=$expHash fi # If we don't know the hash or a path with that hash doesn't exist, # download the file and add it to the store. if test -z "$finalPath"; then tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/bzr-checkout-tmp-XXXXXXXX")" trap "rm -rf \"$tmpPath\"" EXIT tmpFile="$tmpPath/$dstFile" # Perform the checkout. bzr -Ossl.cert_reqs=none export $revarg --format=dir "$tmpFile" "$url" echo "bzr revision is $(bzr revno $revarg "$url")" # Compute the hash. hash=$(nix-hash --type $hashType $hashFormat $tmpFile) if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi # Add the downloaded file to the Nix store. finalPath=$(nix-store --add-fixed --recursive "$hashType" $tmpFile) if test -n "$expHash" -a "$expHash" != "$hash"; then echo "hash mismatch for URL \`$url'" exit 1 fi fi if ! test -n "$QUIET"; then echo "path is $finalPath" >&2; fi echo $hash if test -n "$PRINT_PATH"; then echo $finalPath fi