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cc24766fa6
For example, instead of doing
#include "nix/store-config.hh"
#include "nix/derived-path.hh"
Now do
#include "nix/store/config.hh"
#include "nix/store/derived-path.hh"
This was originally planned in the issue, and also recent requested by
Eelco.
Most of the change is purely mechanical. There is just one small
additional issue. See how, in the example above, we took this
opportunity to also turn `<comp>-config.hh` into `<comp>/config.hh`.
Well, there was already a `nix/util/config.{cc,hh}`. Even though there
is not a public configuration header for libutil (which also would be
called `nix/util/config.{cc,hh}`) that's still confusing, To avoid any
such confusion, we renamed that to `nix/util/configuration.{cc,hh}`.
Finally, note that the libflake headers already did this, so we didn't
need to do anything to them. We wouldn't want to mistakenly get
`nix/flake/flake/flake.hh`!
Progress on #7876
91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
#include "nix/expr/primops.hh"
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#include "nix/expr/eval-inline.hh"
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#include "nix/expr/eval-settings.hh"
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#include "nix/store/store-api.hh"
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#include "nix/fetchers/fetchers.hh"
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#include "nix/util/url.hh"
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#include "nix/util/url-parts.hh"
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namespace nix {
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static void prim_fetchMercurial(EvalState & state, const PosIdx pos, Value * * args, Value & v)
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{
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std::string url;
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std::optional<Hash> rev;
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std::optional<std::string> ref;
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std::string_view name = "source";
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NixStringContext context;
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state.forceValue(*args[0], pos);
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if (args[0]->type() == nAttrs) {
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for (auto & attr : *args[0]->attrs()) {
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std::string_view n(state.symbols[attr.name]);
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if (n == "url")
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url = state.coerceToString(attr.pos, *attr.value, context,
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"while evaluating the `url` attribute passed to builtins.fetchMercurial",
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false, false).toOwned();
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else if (n == "rev") {
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// Ugly: unlike fetchGit, here the "rev" attribute can
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// be both a revision or a branch/tag name.
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auto value = state.forceStringNoCtx(*attr.value, attr.pos, "while evaluating the `rev` attribute passed to builtins.fetchMercurial");
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if (std::regex_match(value.begin(), value.end(), revRegex))
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rev = Hash::parseAny(value, HashAlgorithm::SHA1);
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else
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ref = value;
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}
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else if (n == "name")
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name = state.forceStringNoCtx(*attr.value, attr.pos, "while evaluating the `name` attribute passed to builtins.fetchMercurial");
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else
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state.error<EvalError>("unsupported argument '%s' to 'fetchMercurial'", state.symbols[attr.name]).atPos(attr.pos).debugThrow();
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}
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if (url.empty())
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state.error<EvalError>("'url' argument required").atPos(pos).debugThrow();
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} else
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url = state.coerceToString(pos, *args[0], context,
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"while evaluating the first argument passed to builtins.fetchMercurial",
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false, false).toOwned();
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// FIXME: git externals probably can be used to bypass the URI
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// whitelist. Ah well.
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state.checkURI(url);
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if (state.settings.pureEval && !rev)
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throw Error("in pure evaluation mode, 'fetchMercurial' requires a Mercurial revision");
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fetchers::Attrs attrs;
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attrs.insert_or_assign("type", "hg");
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attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
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attrs.insert_or_assign("name", std::string(name));
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if (ref) attrs.insert_or_assign("ref", *ref);
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if (rev) attrs.insert_or_assign("rev", rev->gitRev());
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auto input = fetchers::Input::fromAttrs(state.fetchSettings, std::move(attrs));
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auto [storePath, input2] = input.fetchToStore(state.store);
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auto attrs2 = state.buildBindings(8);
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state.mkStorePathString(storePath, attrs2.alloc(state.sOutPath));
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if (input2.getRef())
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attrs2.alloc("branch").mkString(*input2.getRef());
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// Backward compatibility: set 'rev' to
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// 0000000000000000000000000000000000000000 for a dirty tree.
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auto rev2 = input2.getRev().value_or(Hash(HashAlgorithm::SHA1));
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attrs2.alloc("rev").mkString(rev2.gitRev());
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attrs2.alloc("shortRev").mkString(rev2.gitRev().substr(0, 12));
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if (auto revCount = input2.getRevCount())
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attrs2.alloc("revCount").mkInt(*revCount);
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v.mkAttrs(attrs2);
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state.allowPath(storePath);
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}
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static RegisterPrimOp r_fetchMercurial({
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.name = "fetchMercurial",
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.arity = 1,
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.fun = prim_fetchMercurial
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});
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}
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