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Misc changes from the flakes branch

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This commit is contained in:
Eelco Dolstra 2020-03-24 14:26:13 +01:00
parent c85097da7c
commit 0a10854f85
22 changed files with 110 additions and 60 deletions
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12
src/libutil/hash.hh
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@ -80,6 +80,18 @@ struct Hash
or base-64. By default, this is prefixed by the hash type
(e.g. "sha256:"). */
std::string to_string(Base base = Base32, bool includeType = true) const;
std::string gitRev() const
{
assert(type == htSHA1);
return to_string(Base16, false);
}
std::string gitShortRev() const
{
assert(type == htSHA1);
return std::string(to_string(Base16, false), 0, 7);
}
};

5
src/libutil/util.hh
View file

@ -476,10 +476,11 @@ string base64Decode(const string & s);
/* Get a value for the specified key from an associate container, or a
default value if the key doesn't exist. */
template <class T>
std::optional<std::string> get(const T & map, const std::string & key)
std::optional<typename T::mapped_type> get(const T & map, const typename T::key_type & key)
{
auto i = map.find(key);
return i == map.end() ? std::optional<std::string>() : i->second;
if (i == map.end()) return {};
return std::optional<typename T::mapped_type>(i->second);
}