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+/**
+ * Copyright (c) 2021, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "humanize.network.hh"
+
+#include "config.h"
+#include "pcrepp/pcre2pp.hh"
+
+namespace humanize {
+namespace network {
+namespace path {
+
+nonstd::optional<::network::path>
+from_str(string_fragment sf)
+{
+ static const auto REMOTE_PATTERN = lnav::pcre2pp::code::from_const(
+ "^(?:(?<username>[\\w\\._\\-]+)@)?"
+ "(?:\\[(?<ipv6>[^\\]]+)\\]|(?<hostname>[^\\[/:]+)):"
+ "(?<path>.*)$");
+ static thread_local auto REMOTE_MATCH_DATA
+ = REMOTE_PATTERN.create_match_data();
+
+ auto match_res = REMOTE_PATTERN.capture_from(sf)
+ .into(REMOTE_MATCH_DATA)
+ .matches()
+ .ignore_error();
+
+ if (!match_res) {
+ return nonstd::nullopt;
+ }
+
+ const auto username = REMOTE_MATCH_DATA["username"].map(
+ [](auto sf) { return sf.to_string(); });
+ const auto ipv6 = REMOTE_MATCH_DATA["ipv6"];
+ const auto hostname = REMOTE_MATCH_DATA["hostname"];
+ const auto locality_hostname = ipv6 ? ipv6.value() : hostname.value();
+ auto path = *REMOTE_MATCH_DATA["path"];
+
+ if (path.empty()) {
+ path = string_fragment::from_const(".");
+ }
+ return ::network::path{
+ {username, locality_hostname.to_string(), nonstd::nullopt},
+ path.to_string(),
+ };
+}
+
+} // namespace path
+} // namespace network
+} // namespace humanize