51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
#pragma once
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#include <json/json.h>
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#include <functional>
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#include <regex>
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#include <string>
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namespace waybar::util {
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struct Rule {
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std::regex rule;
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std::string repr;
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int priority;
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// Fix for Clang < 16
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// See https://en.cppreference.com/w/cpp/compiler_support/20 "Parenthesized initialization of
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// aggregates"
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Rule(std::regex rule, std::string repr, int priority)
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: rule(rule), repr(repr), priority(priority) {}
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};
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int default_priority_function(std::string& key);
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/* A collection of regexes and strings, with a default string to return if no regexes.
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* When a regex is matched, the corresponding string is returned.
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* All regexes that are matched are cached, so that the regexes are only
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* evaluated once against a given string.
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* Regexes may be given a higher priority than others, so that they are matched
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* first. The priority function is given the regex string, and should return a
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* higher number for higher priority regexes.
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*/
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class RegexCollection {
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private:
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std::vector<Rule> rules;
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std::map<std::string, std::string> regex_cache;
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std::string default_repr;
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std::string& find_match(std::string& value, bool& matched_any);
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public:
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RegexCollection() = default;
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RegexCollection(const Json::Value& map, std::string default_repr = "",
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std::function<int(std::string&)> priority_function = default_priority_function);
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~RegexCollection() = default;
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std::string& get(std::string& value, bool& matched_any);
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std::string& get(std::string& value);
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};
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} // namespace waybar::util
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