Add PathsSetting

Change-Id: I1165f6ef033a5f757ca3716d3f8008ba36b01fd0
This commit is contained in:
Rebecca Turner 2024-03-09 14:00:43 -08:00
parent 06e11778b5
commit 6f863e8ccd
4 changed files with 149 additions and 0 deletions

View file

@ -437,6 +437,34 @@ void OptionalPathSetting::operator =(const std::optional<Path> & v)
this->assign(v);
}
PathsSetting::PathsSetting(Config * options,
const Paths & def,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases)
: BaseSetting<Paths>(def, true, name, description, aliases)
{
options->addSetting(this);
}
Paths PathsSetting::parse(const std::string & str) const
{
auto strings = tokenizeString<Strings>(str);
Paths parsed;
for (auto str : strings) {
parsed.push_back(canonPath(str));
}
return parsed;
}
PathsSetting::operator bool() const noexcept
{
return !get().empty();
}
bool GlobalConfig::set(const std::string & name, const std::string & value)
{
for (auto & config : *configRegistrations)

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@ -375,6 +375,26 @@ public:
void operator =(const std::optional<Path> & v);
};
/**
* Like `OptionalPathSetting`, but allows multiple paths.
*/
class PathsSetting : public BaseSetting<Paths>
{
public:
PathsSetting(Config * options,
const Paths & def,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {});
Paths parse(const std::string & str) const override;
void operator =(const Paths & v);
operator bool() const noexcept;
};
struct GlobalConfig : public AbstractConfig
{
typedef std::vector<Config*> ConfigRegistrations;

View file

@ -0,0 +1,100 @@
#include "config.hh"
#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include <sstream>
using testing::Eq;
namespace nix {
class PathsSettingTestConfig : public Config
{
public:
PathsSettingTestConfig()
: Config()
{ }
PathsSetting paths{this, Paths(), "paths", "documentation"};
};
struct PathsSettingTest : public ::testing::Test {
public:
PathsSettingTestConfig mkConfig()
{
return PathsSettingTestConfig();
}
};
TEST_F(PathsSettingTest, parse) {
auto config = mkConfig();
// Not an absolute path:
ASSERT_THROW(config.paths.parse("puppy.nix"), Error);
ASSERT_THAT(
config.paths.parse("/puppy.nix"),
Eq<Paths>({"/puppy.nix"})
);
// Splits on whitespace:
ASSERT_THAT(
config.paths.parse("/puppy.nix /doggy.nix"),
Eq<Paths>({"/puppy.nix", "/doggy.nix"})
);
// Splits on _any_ whitespace:
ASSERT_THAT(
config.paths.parse("/puppy.nix \t /doggy.nix\n\n\n/borzoi.nix\r/goldie.nix"),
Eq<Paths>({"/puppy.nix", "/doggy.nix", "/borzoi.nix", "/goldie.nix"})
);
// Canonicizes paths:
ASSERT_THAT(
config.paths.parse("/puppy/../doggy.nix"),
Eq<Paths>({"/doggy.nix"})
);
}
TEST_F(PathsSettingTest, bool) {
auto config = mkConfig();
// No paths:
ASSERT_FALSE(config.paths);
// Set a path:
config.set("paths", "/puppy.nix");
// Now there are paths:
ASSERT_TRUE(config.paths);
// Multiple paths count too:
config.set("paths", "/puppy.nix /doggy.nix");
ASSERT_TRUE(config.paths);
}
TEST_F(PathsSettingTest, append) {
auto config = mkConfig();
ASSERT_TRUE(config.paths.isAppendable());
// Starts with no paths:
ASSERT_THAT(
config.paths.get(),
Eq<Paths>({})
);
// Can append a path:
config.paths.set("/puppy.nix", true);
ASSERT_THAT(
config.paths.get(),
Eq<Paths>({"/puppy.nix"})
);
// Can append multiple paths:
config.paths.set("/silly.nix /doggy.nix", true);
ASSERT_THAT(
config.paths.get(),
Eq<Paths>({"/puppy.nix", "/silly.nix", "/doggy.nix"})
);
}
} // namespace nix

View file

@ -46,6 +46,7 @@ libutil_tests_sources = files(
'libutil/json-utils.cc',
'libutil/logging.cc',
'libutil/lru-cache.cc',
'libutil/paths-setting.cc',
'libutil/pool.cc',
'libutil/references.cc',
'libutil/suggestions.cc',