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145 lines
4.9 KiB
C++
145 lines
4.9 KiB
C++
/**
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* Copyright (c) 2023, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "file_options.hh"
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#include <fnmatch.h>
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#include "base/lnav_log.hh"
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#include "yajlpp/yajlpp.hh"
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#include "yajlpp/yajlpp_def.hh"
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namespace lnav {
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static const typed_json_path_container<file_options> options_handlers = {
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yajlpp::property_handler("default-zone")
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.with_synopsis("<zone>")
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.with_description("The default zone for log messages if the timestamp "
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"does not include a zone.")
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.with_example("America/Los_Angeles")
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.for_field(&file_options::fo_default_zone),
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};
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static const typed_json_path_container<file_options_collection>
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pattern_to_options_handlers = {
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yajlpp::pattern_property_handler("(?<path>[^/]+)")
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.with_description("Path or glob pattern")
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.with_children(options_handlers)
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.for_field(&file_options_collection::foc_pattern_to_options),
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};
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static const typed_json_path_container<file_options_collection>
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collection_handlers = {
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yajlpp::property_handler("paths")
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.with_description("Mapping of file paths or glob patterns to the "
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"associated options")
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.with_children(pattern_to_options_handlers),
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};
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bool
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file_options::operator==(const lnav::file_options& rhs) const
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{
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return this->fo_default_zone.pp_value == rhs.fo_default_zone.pp_value;
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}
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json_string
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file_options::to_json_string() const
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{
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return options_handlers.to_json_string(*this);
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}
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Result<file_options_collection, std::vector<lnav::console::user_message>>
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file_options_collection::from_json(intern_string_t src,
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const string_fragment& frag)
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{
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return collection_handlers.parser_for(src).of(frag);
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}
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std::string
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file_options_collection::to_json() const
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{
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return collection_handlers.formatter_for(*this)
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.with_config(yajl_gen_beautify, true)
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.to_string();
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}
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nonstd::optional<std::pair<std::string, file_options>>
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file_options_collection::match(const std::string& path) const
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{
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auto iter = this->foc_pattern_to_options.find(path);
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if (iter != this->foc_pattern_to_options.end()) {
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return *iter;
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}
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for (const auto& pair : this->foc_pattern_to_options) {
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auto rc = fnmatch(pair.first.c_str(), path.c_str(), FNM_PATHNAME);
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if (rc == 0) {
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return pair;
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}
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if (rc != FNM_NOMATCH) {
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log_error("fnmatch('%s', '%s') failed -- %s",
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pair.first.c_str(),
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path.c_str(),
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strerror(errno));
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}
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}
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return nonstd::nullopt;
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}
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nonstd::optional<std::pair<std::string, file_options>>
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file_options_hier::match(const ghc::filesystem::path& path) const
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{
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static const auto ROOT_PATH = ghc::filesystem::path("/");
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auto lookup_path = path.parent_path();
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while (true) {
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const auto iter = this->foh_path_to_collection.find(lookup_path);
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if (iter != this->foh_path_to_collection.end()) {
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return iter->second.match(path.string());
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}
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auto next_lookup_path = lookup_path.parent_path();
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if (lookup_path == next_lookup_path) {
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if (lookup_path != ROOT_PATH) {
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// remote paths won't end with root, so try that
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next_lookup_path = ROOT_PATH;
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} else {
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break;
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}
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}
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lookup_path = next_lookup_path;
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}
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return nonstd::nullopt;
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}
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} // namespace lnav
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