Merge remote-tracking branch 'upstream/master' into trustless-remote-builder-simple

1 files changed, 25 insertions, 0 deletions

diff --git a/src/libutil/git.cc b/src/libutil/git.cc
new file mode 100644
index 000000000..f35c2fdb7
--- /dev/null
+++ b/src/libutil/git.cc
@@ -0,0 +1,25 @@
+#include "git.hh"
+
+#include <regex>
+
+namespace nix {
+namespace git {
+
+std::optional<LsRemoteRefLine> parseLsRemoteLine(std::string_view line)
+{
+    const static std::regex line_regex("^(ref: *)?([^\\s]+)(?:\\t+(.*))?$");
+    std::match_results<std::string_view::const_iterator> match;
+    if (!std::regex_match(line.cbegin(), line.cend(), match, line_regex))
+        return std::nullopt;
+
+    return LsRemoteRefLine {
+        .kind = match[1].length() == 0
+            ? LsRemoteRefLine::Kind::Object
+            : LsRemoteRefLine::Kind::Symbolic,
+        .target = match[2],
+        .reference = match[3].length() == 0 ? std::nullopt : std::optional<std::string>{ match[3] }
+    };
+}
+
+}
+}