blob: 1e2fe891f544a3bf48dfb472fd29f155e41c0198 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
#include "common-eval-args.hh"
#include "download.hh"
#include "eval.hh"
#include "shared.hh"
#include "util.hh"
namespace nix {
MixEvalArgs::MixEvalArgs() {
mkFlag()
.longName("arg")
.description("argument to be passed to Nix functions")
.labels({"name", "expr"})
.handler(
[&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'E' + ss[1]; });
mkFlag()
.longName("argstr")
.description("string-valued argument to be passed to Nix functions")
.labels({"name", "string"})
.handler(
[&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'S' + ss[1]; });
mkFlag()
.shortName('I')
.longName("include")
.description(
"add a path to the list of locations used to look up <...> file "
"names")
.label("path")
.handler([&](std::string s) { searchPath.push_back(s); });
}
Bindings* MixEvalArgs::getAutoArgs(EvalState& state) {
Bindings* res = state.allocBindings(autoArgs.size());
for (auto& i : autoArgs) {
Value* v = state.allocValue();
if (i.second[0] == 'E')
state.mkThunk_(
*v, state.parseExprFromString(string(i.second, 1), absPath(".")));
else
mkString(*v, string(i.second, 1));
res->push_back(Attr(state.symbols.create(i.first), v));
}
res->sort();
return res;
}
Path lookupFileArg(EvalState& state, string s) {
if (isUri(s)) {
CachedDownloadRequest request(s);
request.unpack = true;
return getDownloader()->downloadCached(state.store, request).path;
} else if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
Path p = s.substr(1, s.size() - 2);
return state.findFile(p);
} else
return absPath(s);
}
} // namespace nix
|
