f83af95f8a
Instead of relying on $$ to not collide with an existing path. Quoting the Bash manual about $$: > Expands to the process ID of the shell. In a () subshell, it expands > to the process ID of the current shell, not the subshell. So, this is different from $BASHPID: > Expands to the process ID of the current bash process. This differs > from $$ under certain circumstances, such as subshells that do not > require bash to be re-initialized. But even $BASHPID is prone to race conditions if the process IDs wrap around, so to be on the safe side, we're using mktemp here. Closes #3784. Signed-off-by: aszlig <aszlig@redmoonstudios.org>
79 lines
1.9 KiB
Bash
Executable file
79 lines
1.9 KiB
Bash
Executable file
#! /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 "$url"; then
|
|
echo "syntax: nix-prefetch-svn URL [REVISION [EXPECTED-HASH]]" >&2
|
|
exit 1
|
|
fi
|
|
|
|
test -n "$rev" || rev="HEAD"
|
|
|
|
repoName=$(echo $url | sed '
|
|
s,.*/\([^/]\+\)/trunk/*$,\1,;t
|
|
s,.*/\([^/]\+\)/branches/\([^/]\+\)/*$,\1-\2,;t
|
|
s,.*/\([^/]\+\)/tags/\([^/]\+\)/*$,\1-\2,;t
|
|
s,.*/\([^/]\+\)/*$,\1,;t
|
|
')
|
|
dstFile=$repoName-r$rev
|
|
|
|
# If the hash was given, a file with that hash may already be in the
|
|
# store.
|
|
if test -n "$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="$(mktemp --tmpdir -d svn-checkout-tmp-XXXXXXXX)"
|
|
trap "rm -rf \"$tmpPath\"" EXIT
|
|
|
|
tmpFile="$tmpPath/$dstFile"
|
|
|
|
# Perform the checkout.
|
|
if test "$NIX_PREFETCH_SVN_LEAVE_DOT_SVN" != 1
|
|
then
|
|
command="export"
|
|
else
|
|
command="checkout"
|
|
fi
|
|
|
|
echo p | svn "$command" --quiet -r "$rev" "$url" "$tmpFile" >&2
|
|
echo "svn revision is $(svn info -r "$rev" "$url" | grep "Revision: " | cut -d' ' -f2)"
|
|
|
|
# Compute the hash.
|
|
hash=$(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
|