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author | Rob Vermaas <rob.vermaas@gmail.com> | 2011-02-08 13:09:17 +0000 |
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committer | Rob Vermaas <rob.vermaas@gmail.com> | 2011-02-08 13:09:17 +0000 |
commit | 224ff6c1eee1e282465b2a715e3f9738cc2f1a19 (patch) | |
tree | 1c72301771f58e3f6902e8fed2ce60d76d231755 /pkgs/build-support/fetchbzr/nix-prefetch-bzr | |
parent | 58744ab7f30ccf995864705e222bc93954105af7 (diff) | |
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added nix-prefetch-bzr
svn path=/nixpkgs/trunk/; revision=25806
Diffstat (limited to 'pkgs/build-support/fetchbzr/nix-prefetch-bzr')
-rwxr-xr-x | pkgs/build-support/fetchbzr/nix-prefetch-bzr | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/pkgs/build-support/fetchbzr/nix-prefetch-bzr b/pkgs/build-support/fetchbzr/nix-prefetch-bzr new file mode 100755 index 000000000000..167892fbb794 --- /dev/null +++ b/pkgs/build-support/fetchbzr/nix-prefetch-bzr @@ -0,0 +1,79 @@ +#! /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,.*/\([^/]\+\)/*$,\1,;t +') +dstFile=$repoName-r$rev +test -n "$rev" || dstFile=$repoName + +# If the hash was given, a file with that hash may already be in the +# store. +if test -n "$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=/tmp/bzr-checkout-tmp-$$ + tmpFile=$tmpPath/$dstFile + mkdir $tmpPath + + trap "rm -rf $tmpPath" EXIT + + # Perform the checkout. + if test "$NIX_PREFETCH_BZR_LEAVE_DOT_BZR" != 1 + then + bzr export $revarg "$tmpFile" "$url" >&2 + else + bzr checkout --lightweight $revarg "$url" "$tmpFile" >&2 + fi + + # Compute the hash. + hash=$(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 |