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Merge pull request #6051 from Ma27/fix-empty-nix-log

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`nix log` should also work if the log didn't provide any output
This commit is contained in:
Eelco Dolstra 2022-03-25 10:35:10 +01:00 committed by GitHub
commit 55bc524019
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 25 additions and 15 deletions
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26
src/libutil/tarfile.cc
View file

@ -39,30 +39,32 @@ void TarArchive::check(int err, const std::string & reason)
throw Error(reason, archive_error_string(this->archive));
}
TarArchive::TarArchive(Source & source, bool raw)
: source(&source), buffer(4096)
TarArchive::TarArchive(Source & source, bool raw) : buffer(4096)
{
init();
if (!raw)
this->archive = archive_read_new();
this->source = &source;
if (!raw) {
archive_read_support_filter_all(archive);
archive_read_support_format_all(archive);
else
} else {
archive_read_support_filter_all(archive);
archive_read_support_format_raw(archive);
archive_read_support_format_empty(archive);
}
check(archive_read_open(archive, (void *)this, callback_open, callback_read, callback_close), "Failed to open archive (%s)");
}
TarArchive::TarArchive(const Path & path)
{
init();
this->archive = archive_read_new();
archive_read_support_filter_all(archive);
archive_read_support_format_all(archive);
check(archive_read_open_filename(archive, path.c_str(), 16384), "failed to open archive: %s");
}
void TarArchive::init()
{
archive = archive_read_new();
archive_read_support_filter_all(archive);
}
void TarArchive::close()
{
check(archive_read_close(this->archive), "Failed to close archive (%s)");

3
src/libutil/tarfile.hh
View file

@ -17,13 +17,10 @@ struct TarArchive {
// disable copy constructor
TarArchive(const TarArchive &) = delete;
void init();
void close();
~TarArchive();
};
void unpackTarfile(Source & source, const Path & destDir);
void unpackTarfile(const Path & tarFile, const Path & destDir);

11
tests/logging.sh
View file

@ -13,3 +13,14 @@ rm -rf $NIX_LOG_DIR
(! nix-store -l $path)
nix-build dependencies.nix --no-out-link --compress-build-log
[ "$(nix-store -l $path)" = FOO ]
# test whether empty logs work fine with `nix log`.
builder="$(mktemp)"
echo -e "#!/bin/sh\nmkdir \$out" > "$builder"
outp="$(nix-build -E \
'with import ./config.nix; mkDerivation { name = "fnord"; builder = '"$builder"'; }' \
--out-link "$(mktemp -d)/result")"
test -d "$outp"
nix log "$outp"