tjh.dev
Clone of https://github.com/NixOS/nixpkgs.git (to stress-test knotserver)
1#! /bin/sh -e
2
3cvsRoot=$1
4module=$2
5tag=$3
6expHash=$4
7
8hashType=$NIX_HASH_ALGO
9if test -z "$hashType"; then
10 hashType=sha256
11fi
12
13if test -z "$cvsRoot"; then
14 echo "syntax: nix-prefetch-cvs CVSROOT MODULE [TAG [HASH]]" >&2
15 exit 1
16elif test -z "$module"; then
17 echo "syntax: nix-prefetch-cvs CVSROOT MODULE [TAG [HASH]]" >&2
18 exit 1
19fi
20
21
22mkTempDir() {
23 tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/nix-prefetch-cvs-XXXXXXXX")"
24 trap removeTempDir EXIT
25}
26
27removeTempDir() {
28 rm -rf "$tmpPath"
29}
30
31
32# If the hash was given, a file with that hash may already be in the
33# store.
34if test -n "$expHash"; then
35 finalPath=$(nix-store --print-fixed-path --recursive "$hashType" "$expHash" cvs-export)
36 if ! nix-store --check-validity "$finalPath" 2> /dev/null; then
37 finalPath=
38 fi
39 hash=$expHash
40fi
41
42
43# If we don't know the hash or a path with that hash doesn't exist,
44# download the file and add it to the store.
45if test -z "$finalPath"; then
46
47 mkTempDir
48 tmpFile=$tmpPath/cvs-export
49 #mkdir $tmpPath
50
51 # Perform the checkout.
52 if test -z "$tag"; then
53 args=(-D "now")
54 elif test "$USE_DATE" = "1"; then
55 args=(-D "$tag")
56 else
57 args=(-r "$tag")
58 fi
59 (cd "$tmpPath" && cvs -f -z0 -d $cvsRoot export "${args[*]}" -d cvs-export $module >&2)
60
61 # Compute the hash.
62 hash=$(nix-hash --type $hashType $hashFormat $tmpFile)
63 if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi
64
65 # Add the downloaded file to the Nix store.
66 finalPath=$(nix-store --add-fixed --recursive "$hashType" $tmpFile)
67
68 if test -n "$expHash" -a "$expHash" != "$hash"; then
69 echo "hash mismatch for CVS root \`$cvsRoot'"
70 exit 1
71 fi
72fi
73
74if ! test -n "$QUIET"; then echo "path is $finalPath" >&2; fi
75
76echo $hash
77
78if test -n "$PRINT_PATH"; then
79 echo $finalPath
80fi