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lnav/src/base/humanize.network.cc

72 lines
2.5 KiB
C++

/**
* 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/pcrepp.hh"
namespace humanize {
namespace network {
namespace path {
nonstd::optional<::network::path>
from_str(const char* str)
{
static const pcrepp REMOTE_PATTERN(
"(?:(?<username>[\\w\\._\\-]+)@)?"
"(?:\\[(?<ipv6>[^\\]]+)\\]|(?<hostname>[^\\[/:]+)):"
"(?<path>.*)");
pcre_context_static<30> pc;
pcre_input pi(str);
if (!REMOTE_PATTERN.match(pc, pi)) {
return nonstd::nullopt;
}
const auto username = pi.get_substr_opt(pc["username"]);
const auto ipv6 = pi.get_substr_opt(pc["ipv6"]);
const auto hostname = pi.get_substr_opt(pc["hostname"]);
const auto locality_hostname = ipv6 ? ipv6.value() : hostname.value();
auto path = pi.get_substr(pc["path"]);
if (path.empty()) {
path = ".";
}
return ::network::path{
{username, locality_hostname, nonstd::nullopt},
path,
};
}
} // namespace path
} // namespace network
} // namespace humanize