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Get rid of CanonPath::fromCwd

Browse source 
As discussed in the last Nix team meeting (2024-02-95), this method
doesn't belong because `CanonPath` is a virtual/ideal absolute path
format, not used in file systems beyond the native OS format for which a
"current working directory" is defined.

Progress towards #9205
This commit is contained in:
John Ericson 2024-02-06 16:23:58 -05:00
parent f2f54cf087
commit 4687beecef
30 changed files with 152 additions and 135 deletions
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64
src/libfetchers/fs-input-accessor.cc
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@ -6,72 +6,30 @@ namespace nix {
struct FSInputAccessor : InputAccessor, PosixSourceAccessor
{
CanonPath root;
FSInputAccessor(const CanonPath & root)
: root(root)
{
displayPrefix = root.isRoot() ? "" : root.abs();
}
void readFile(
const CanonPath & path,
Sink & sink,
std::function<void(uint64_t)> sizeCallback) override
{
auto absPath = makeAbsPath(path);
PosixSourceAccessor::readFile(absPath, sink, sizeCallback);
}
bool pathExists(const CanonPath & path) override
{
return PosixSourceAccessor::pathExists(makeAbsPath(path));
}
std::optional<Stat> maybeLstat(const CanonPath & path) override
{
return PosixSourceAccessor::maybeLstat(makeAbsPath(path));
}
DirEntries readDirectory(const CanonPath & path) override
{
DirEntries res;
for (auto & entry : PosixSourceAccessor::readDirectory(makeAbsPath(path)))
res.emplace(entry);
return res;
}
std::string readLink(const CanonPath & path) override
{
return PosixSourceAccessor::readLink(makeAbsPath(path));
}
CanonPath makeAbsPath(const CanonPath & path)
{
return root / path;
}
std::optional<CanonPath> getPhysicalPath(const CanonPath & path) override
{
return makeAbsPath(path);
}
using PosixSourceAccessor::PosixSourceAccessor;
};
ref<InputAccessor> makeFSInputAccessor(const CanonPath & root)
ref<InputAccessor> makeFSInputAccessor()
{
return make_ref<FSInputAccessor>(root);
return make_ref<FSInputAccessor>();
}
ref<InputAccessor> makeFSInputAccessor(std::filesystem::path root)
{
return make_ref<FSInputAccessor>(std::move(root));
}
ref<InputAccessor> makeStorePathAccessor(
ref<Store> store,
const StorePath & storePath)
{
return makeFSInputAccessor(CanonPath(store->toRealPath(storePath)));
// FIXME: should use `store->getFSAccessor()`
return makeFSInputAccessor(std::filesystem::path { store->toRealPath(storePath) });
}
SourcePath getUnfilteredRootPath(CanonPath path)
{
static auto rootFS = makeFSInputAccessor(CanonPath::root);
static auto rootFS = makeFSInputAccessor();
return {rootFS, path};
}