tvl-depot/src/libstore/download.hh
Eelco Dolstra c10c61449f Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.

Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
2016-02-04 14:28:26 +01:00

32 lines
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C++

#pragma once
#include "types.hh"
#include <string>
namespace nix {
struct DownloadOptions
{
string expectedETag;
bool verifyTLS{true};
bool forceProgress{false};
};
struct DownloadResult
{
bool cached;
string data, etag;
};
class StoreAPI;
DownloadResult downloadFile(string url, const DownloadOptions & options);
Path downloadFileCached(ref<StoreAPI> store, const string & url, bool unpack);
MakeError(DownloadError, Error)
bool isUri(const string & s);
}