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Move isUri() and resolveUri() out of filetransfer.cc

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These are purely related to NIX_PATH / -I command line parsing, so put
them in libexpr.
This commit is contained in:
Eelco Dolstra 2022-09-12 15:37:09 +02:00
parent 7396844676
commit ae5f62a894
7 changed files with 30 additions and 33 deletions
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19
src/libexpr/eval.cc
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@ -402,7 +402,7 @@ static Strings parseNixPath(const std::string & s)
}
if (*p == ':') {
if (isUri(std::string(start2, s.end()))) {
if (EvalSettings::isPseudoUrl(std::string(start2, s.end()))) {
++p;
while (p != s.end() && *p != ':') ++p;
}
@ -2583,6 +2583,23 @@ Strings EvalSettings::getDefaultNixPath()
return res;
}
bool EvalSettings::isPseudoUrl(std::string_view s)
{
if (s.compare(0, 8, "channel:") == 0) return true;
size_t pos = s.find("://");
if (pos == std::string::npos) return false;
std::string scheme(s, 0, pos);
return scheme == "http" || scheme == "https" || scheme == "file" || scheme == "channel" || scheme == "git" || scheme == "s3" || scheme == "ssh";
}
std::string EvalSettings::resolvePseudoUrl(std::string_view url)
{
if (hasPrefix(url, "channel:"))
return "https://nixos.org/channels/" + std::string(url.substr(8)) + "/nixexprs.tar.xz";
else
return std::string(url);
}
EvalSettings evalSettings;
static GlobalConfig::Register rEvalSettings(&evalSettings);