string_util.h

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#pragma once
#include <functional>
#include <string>
 
namespace hgps::core {
 
std::string trim(std::string value) noexcept;
 
std::string to_lower(const std::string_view &value) noexcept;
 
std::string to_upper(const std::string_view &value) noexcept;
 
std::vector<std::string_view> split_string(const std::string_view &value,
                                           std::string_view delims) noexcept;
 
struct case_insensitive final {
 
    struct comparator {
        bool operator()(const std::string_view &left, const std::string_view &right) const;
    };
 
    static std::weak_ordering compare(const std::string_view &left,
                                      const std::string_view &right) noexcept;
 
    static bool equals(const std::string_view &left, const std::string_view &right) noexcept;
 
    static bool contains(const std::string_view &text, const std::string_view &str) noexcept;
 
    static bool contains(const std::vector<std::string> &source,
                         const std::string_view &element) noexcept;
 
    static bool starts_with(const std::string_view &text, const std::string_view &str) noexcept;
 
    static bool ends_with(const std::string_view &text, const std::string_view &str) noexcept;
 
    static int index_of(const std::vector<std::string> &source,
                        const std::string_view &element) noexcept;
 
  private:
    static bool equal_char(char left, char right) noexcept;
};
} // namespace hgps::core