forked from lix-project/lix
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
#include "primops.hh"
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#include "eval-inline.hh"
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#include "store-api.hh"
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#include "hash.hh"
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#include "fetchers.hh"
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#include "url.hh"
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namespace nix {
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static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Value & v)
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{
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std::string url;
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std::optional<std::string> ref;
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std::optional<Hash> rev;
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std::string name = "source";
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bool fetchSubmodules = false;
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PathSet context;
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state.forceValue(*args[0]);
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if (args[0]->type == tAttrs) {
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state.forceAttrs(*args[0], pos);
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for (auto & attr : *args[0]->attrs) {
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string n(attr.name);
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if (n == "url")
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url = state.coerceToString(*attr.pos, *attr.value, context, false, false);
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else if (n == "ref")
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ref = state.forceStringNoCtx(*attr.value, *attr.pos);
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else if (n == "rev")
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rev = Hash(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA1);
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else if (n == "name")
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name = state.forceStringNoCtx(*attr.value, *attr.pos);
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else if (n == "submodules")
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fetchSubmodules = state.forceBool(*attr.value, *attr.pos);
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else
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throw EvalError("unsupported argument '%s' to 'fetchGit', at %s", attr.name, *attr.pos);
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}
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if (url.empty())
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throw EvalError(format("'url' argument required, at %1%") % pos);
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} else
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url = state.coerceToString(pos, *args[0], context, false, false);
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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 (evalSettings.pureEval && !rev)
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throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
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fetchers::Attrs attrs;
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attrs.insert_or_assign("type", "git");
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attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
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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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if (fetchSubmodules) attrs.insert_or_assign("submodules", true);
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auto input = fetchers::inputFromAttrs(attrs);
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// FIXME: use name?
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auto [tree, input2] = input->fetchTree(state.store);
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state.mkAttrs(v, 8);
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auto storePath = state.store->printStorePath(tree.storePath);
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mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
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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(htSHA1));
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mkString(*state.allocAttr(v, state.symbols.create("rev")), rev2.gitRev());
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mkString(*state.allocAttr(v, state.symbols.create("shortRev")), rev2.gitShortRev());
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// Backward compatibility: set 'revCount' to 0 for a dirty tree.
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mkInt(*state.allocAttr(v, state.symbols.create("revCount")),
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tree.info.revCount.value_or(0));
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mkBool(*state.allocAttr(v, state.symbols.create("submodules")), fetchSubmodules);
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v.attrs->sort();
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if (state.allowedPaths)
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state.allowedPaths->insert(tree.actualPath);
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}
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static RegisterPrimOp r("fetchGit", 1, prim_fetchGit);
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}
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