#! /bin/sh -e url=$1 rev=$2 expHash=$3 hashType=$NIX_HASH_ALGO if test -z "$hashType"; then hashType=md5 fi if test -z "$url"; then echo "syntax: nix-prefetch-svn URL [REVISION [EXPECTED-HASH]]" >&2 exit 1 fi test -n "$rev" || rev="HEAD" # Use a restrictive umask to ensure that the output in the Nix store # is not group- or world-writable. Nix 0.10 complains about this. umask 0022 # If the hash was given, a file with that hash may already be in the # store. if test -n "$expHash"; then finalPath=$(nix-store --print-fixed-path --recursive "$hashType" "$expHash" svn-export) if ! nix-store --check-validity "$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=/tmp/svn-checkout-tmp-$$ tmpFile=$tmpPath/svn-export mkdir $tmpPath trap "rm -rf $tmpPath" EXIT # Perform the checkout. # !!! remove 2>/dev/null when we have fixed the certificate hackery. echo p | svn export -r "$rev" "$url" $tmpFile 2>/dev/null >&2 # Compute the hash. hash=$(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