You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.7 KiB
83 lines
2.7 KiB
# This function downloads and normalizes a patch/diff file.
|
|
# This is primarily useful for dynamically generated patches,
|
|
# such as GitHub's or cgit's, where the non-significant content parts
|
|
# often change with updating of git or cgit.
|
|
# stripLen acts as the -p parameter when applying a patch.
|
|
|
|
{ lib, fetchurl, buildPackages }:
|
|
let
|
|
# 0.3.4 would change hashes: https://github.com/NixOS/nixpkgs/issues/25154
|
|
patchutils = buildPackages.patchutils_0_3_3;
|
|
in
|
|
{ relative ? null
|
|
, stripLen ? 0
|
|
, extraPrefix ? null
|
|
, excludes ? []
|
|
, includes ? []
|
|
, revert ? false
|
|
, postFetch ? ""
|
|
, ...
|
|
}@args:
|
|
let
|
|
args' = if relative != null then {
|
|
stripLen = 1 + lib.length (lib.splitString "/" relative) + stripLen;
|
|
extraPrefix = if extraPrefix != null then extraPrefix else "";
|
|
} else {
|
|
inherit stripLen extraPrefix;
|
|
};
|
|
in let
|
|
inherit (args') stripLen extraPrefix;
|
|
in
|
|
lib.throwIfNot (excludes == [] || includes == [])
|
|
"fetchpatch: cannot use excludes and includes simultaneously"
|
|
fetchurl ({
|
|
postFetch = ''
|
|
tmpfile="$TMPDIR/patch"
|
|
|
|
if [ ! -s "$out" ]; then
|
|
echo "error: Fetched patch file '$out' is empty!" 1>&2
|
|
exit 1
|
|
fi
|
|
|
|
"${patchutils}/bin/lsdiff" \
|
|
${lib.optionalString (relative != null) "-p1 -i ${lib.escapeShellArg relative}/'*'"} \
|
|
"$out" \
|
|
| sort -u | sed -e 's/[*?]/\\&/g' \
|
|
| xargs -I{} \
|
|
"${patchutils}/bin/filterdiff" \
|
|
--include={} \
|
|
--strip=${toString stripLen} \
|
|
${lib.optionalString (extraPrefix != null) ''
|
|
--addoldprefix=a/${lib.escapeShellArg extraPrefix} \
|
|
--addnewprefix=b/${lib.escapeShellArg extraPrefix} \
|
|
''} \
|
|
--clean "$out" > "$tmpfile"
|
|
|
|
if [ ! -s "$tmpfile" ]; then
|
|
echo "error: Normalized patch '$tmpfile' is empty (while the fetched file was not)!" 1>&2
|
|
echo "Did you maybe fetch a HTML representation of a patch instead of a raw patch?" 1>&2
|
|
echo "Fetched file was:" 1>&2
|
|
cat "$out" 1>&2
|
|
exit 1
|
|
fi
|
|
|
|
${patchutils}/bin/filterdiff \
|
|
-p1 \
|
|
${builtins.toString (builtins.map (x: "-x ${lib.escapeShellArg x}") excludes)} \
|
|
${builtins.toString (builtins.map (x: "-i ${lib.escapeShellArg x}") includes)} \
|
|
"$tmpfile" > "$out"
|
|
|
|
if [ ! -s "$out" ]; then
|
|
echo "error: Filtered patch '$out' is empty (while the original patch file was not)!" 1>&2
|
|
echo "Check your includes and excludes." 1>&2
|
|
echo "Normalized patch file was:" 1>&2
|
|
cat "$tmpfile" 1>&2
|
|
exit 1
|
|
fi
|
|
'' + lib.optionalString revert ''
|
|
${patchutils}/bin/interdiff "$out" /dev/null > "$tmpfile"
|
|
mv "$tmpfile" "$out"
|
|
'' + postFetch;
|
|
} // builtins.removeAttrs args [
|
|
"relative" "stripLen" "extraPrefix" "excludes" "includes" "revert" "postFetch"
|
|
])
|
|
|