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author | Charles Strahan <charles.c.strahan@gmail.com> | 2014-06-22 05:42:34 -0400 |
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committer | Charles Strahan <charles.c.strahan@gmail.com> | 2014-06-23 01:25:40 -0400 |
commit | 9bd8dffd77c8bdd0f73df14d56707250e7240857 (patch) | |
tree | a8175c08bd40ba53338dea277ec15e92e3f3bde6 /pkgs/build-support/fetchzip | |
parent | 400b94e120462f9d6b503e38baa3e4d52917986d (diff) | |
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require gnused for all prefetch scripts
Diffstat (limited to 'pkgs/build-support/fetchzip')
-rwxr-xr-x | pkgs/build-support/fetchzip/nix-prefetch-zip | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/pkgs/build-support/fetchzip/nix-prefetch-zip b/pkgs/build-support/fetchzip/nix-prefetch-zip new file mode 100755 index 00000000000..76255ab3674 --- /dev/null +++ b/pkgs/build-support/fetchzip/nix-prefetch-zip @@ -0,0 +1,153 @@ +#! /bin/sh -e + +usage(){ + echo >&2 "syntax: nix-prefetch-zip [OPTIONS] [URL [EXPECTED-HASH]] + +Options: + --url url The url of the archive to fetch. + --name name The name to use for the store path (defaults to \`basename \$url\`). + --hash hash The hash of unpacked archive. + --hash-type type Use the specified cryptographic hash algorithm, which can be one of md5, sha1, and sha256. + --leave-root Keep the root directory of the archive. + --help Show this help text. +" + exit 1 +} + + +argi=0 +argfun="" +for arg; do + if test -z "$argfun"; then + case $arg in + --url) argfun=set_url;; + --name) argfun=set_name;; + --hash) argfun=set_expHash;; + --hash-type) argfun=set_hashType;; + --leave-root) leaveRoot=true;; + --help) usage;; + *) argi=$(($argi + 1)) + case $argi in + 1) url=$arg;; + 2) rev=$arg;; + 3) expHash=$arg;; + *) echo "Unexpected argument: $arg" >&2 + usage + ;; + esac + ;; + esac + else + case $argfun in + set_*) + var=$(echo $argfun | sed 's,^set_,,') + eval "$var=\$arg" + ;; + esac + argfun="" + fi +done + +if [ -z "$url" ]; then + echo "Error: No --url flag given" >&2 + usage +fi + +if [ -z "$name" ]; then + name=$(basename "$url") +fi + +if test -z "$hashType"; then + hashType=sha256 +fi + +hashFormat="--base32" + +tmp=$(mktemp -d 2>/dev/null || mktemp -d -t "$$") +trap "rm -rf '$tmp'" EXIT + +unpackDir=$tmp/unpacked/$name +mkdir -p $unpackDir +downloadedFile=$tmp/$name + +unpackFile() { + local curSrc="$1" + + case "$curSrc" in + *.tar.xz | *.tar.lzma) + # Don't rely on tar knowing about .xz. + xz -d < $curSrc | tar xf - + ;; + *.tar | *.tar.* | *.tgz | *.tbz2) + # GNU tar can automatically select the decompression method + # (info "(tar) gzip"). + tar xf $curSrc + ;; + *.zip) + unzip -qq $curSrc + ;; + *) + echo "source archive $curSrc has unknown type" >&2 + exit 1 + ;; + esac +} + +# If the hash was given, a file with that hash may already be in the +# store. +if test -n "$expHash"; then + finalPath=$(nix-store --print-fixed-path --recursive "$hashType" "$expHash" "$name") + 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 + curl="curl \ + --location --max-redirs 20 \ + --disable-epsv \ + --insecure" + + if ! $curl --fail "$url" --output "$downloadedFile"; then + echo "error: could not download $url" >&2 + exit 1 + fi + + cd $unpackDir + unpackFile "$downloadedFile" + + # FIXME: handle zip files that contain a single regular file. + if [ -z "$leaveRoot" ]; then + shopt -s dotglob + if [ $(ls -d $unpackDir/* | wc -l) != 1 ]; then + echo "error: zip file must contain a single directory." + exit 1 + fi + fn=$(cd "$unpackDir" && echo *) + mv $unpackDir/$fn/* "$unpackDir/" + rmdir "$unpackDir/$fn" + fi + + # Compute the hash. + hash=$(nix-hash --type $hashType $hashFormat $unpackDir) + if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi + + # Add the downloaded file to the Nix store. + finalPath=$(nix-store --add-fixed --recursive "$hashType" $unpackDir) + + if test -n "$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 |