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builtins.fetch{url,tarball}: Allow name attribute

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This commit is contained in:
Shea Levy 2016-08-15 07:37:11 -04:00
parent eff80419c7
commit d52d391164
3 changed files with 13 additions and 9 deletions
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11
src/libexpr/primops.cc
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@ -1682,6 +1682,7 @@ void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
{
string url;
Hash expectedHash;
string name;
state.forceValue(*args[0]);
@ -1690,11 +1691,13 @@ void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
state.forceAttrs(*args[0], pos);
for (auto & attr : *args[0]->attrs) {
string name(attr.name);
if (name == "url")
string n(attr.name);
if (n == "url")
url = state.forceStringNoCtx(*attr.value, *attr.pos);
else if (name == "sha256")
else if (n == "sha256")
expectedHash = parseHash16or32(htSHA256, state.forceStringNoCtx(*attr.value, *attr.pos));
else if (n == "name")
name = state.forceStringNoCtx(*attr.value, *attr.pos);
else
throw EvalError(format("unsupported argument ‘%1%’ to ‘%2%’, at %3%") % attr.name % who % attr.pos);
}
@ -1708,7 +1711,7 @@ void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
if (state.restricted && !expectedHash)
throw Error(format("‘%1%’ is not allowed in restricted mode") % who);
Path res = makeDownloader()->downloadCached(state.store, url, unpack, expectedHash);
Path res = makeDownloader()->downloadCached(state.store, url, unpack, name, expectedHash);
mkString(v, res, PathSet({res}));
}