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Create MemorySink

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This is for writing to a `MemorySourceAccessor`.
This commit is contained in:
John Ericson 2023-11-03 00:57:19 -04:00
parent d1a1888a3e
commit 3d9d5dc189
2 changed files with 81 additions and 0 deletions
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25
src/libutil/memory-source-accessor.hh
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@ -1,4 +1,5 @@
#include "source-accessor.hh"
#include "fs-sink.hh"
#include "variant-wrapper.hh"
namespace nix {
@ -71,4 +72,28 @@ struct MemorySourceAccessor : virtual SourceAccessor
CanonPath addFile(CanonPath path, std::string && contents);
};
/**
* Write to a `MemorySourceAccessor` at the given path
*/
struct MemorySink : ParseSink
{
MemorySourceAccessor & dst;
MemorySink(MemorySourceAccessor & dst) : dst(dst) { }
void createDirectory(const Path & path) override;
void createRegularFile(const Path & path) override;
void receiveContents(std::string_view data) override;
void isExecutable() override;
void closeRegularFile() override;
void createSymlink(const Path & path, const std::string & target) override;
void preallocateContents(uint64_t size) override;
private:
MemorySourceAccessor::File::Regular * r;
};
}