string.h

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#ifndef LIPH_STRING_H_
#define LIPH_STRING_H_
 
#include <optional>
#include <sstream>
#include <string>
#include <string_view>
#include <vector>
 
namespace liph {
 
std::string_view ltrim(std::string_view s, std::string_view charset = " \n\r\t\f\v");
 
std::string_view rtrim(std::string_view s, std::string_view charset = " \n\r\t\f\v");
 
std::string_view trim(std::string_view s, std::string_view charset = " \n\r\t\f\v");
 
constexpr bool startswith(std::string_view s, std::string_view t) noexcept { return s.starts_with(t); }
 
constexpr bool endswith(std::string_view s, std::string_view t) noexcept { return s.ends_with(t); }
 
std::string replace(std::string_view str, std::string_view old, std::string_view New);
 
void split(std::vector<std::string>& tokens, const std::string& s, const std::string& delimiters = " ");
 
std::vector<std::string> split(const std::string& s, const std::string& delimiters = " ");
 
std::string basename(std::string_view path);
 
std::string dirname(std::string_view path);
 
template <typename Target = std::string, typename Source = std::string>
Target to(const Source& s) {
    std::stringstream buf;
    Target result;
    if (!(buf << s) || !(buf >> result) || !(buf >> std::ws).eof()) throw std::runtime_error{"to<>() failed"};
    return result;
}
 
void skip_whitespace(std::string_view& sv);
 
bool eat_symbol(std::string_view& sv, std::string_view symbol);
 
std::optional<int> to_int(std::string_view str);
 
template <std::ranges::input_range Range>
std::string join(const Range& range, const std::string& sep = " ") {
    std::string str;
    bool first = true;
    for (const auto& value : range) {
        if (!first) str += sep;
        first = false;
        if constexpr (std::is_same<std::ranges::range_value_t<Range>, std::string>::value)
            str += value;
        else
            str += std::to_string(value);
    }
    return str;
}
 
}  // namespace liph
 
#endif  // LIPH_STRING_H_