split.hh

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#pragma once
 
#include <optional>
#include <string_view>
 
namespace nix {

static inline std::optional<std::string_view> splitPrefixTo(std::string_view & string, char separator) {
    auto sepInstance = string.find(separator);
 
    if (sepInstance != std::string_view::npos) {
        auto prefix = string.substr(0, sepInstance);
        string.remove_prefix(sepInstance+1);
        return prefix;
    }
 
    return std::nullopt;
}
 
static inline bool splitPrefix(std::string_view & string, std::string_view prefix) {
    bool res = string.starts_with(prefix);
    if (res)
        string.remove_prefix(prefix.length());
    return res;
}
 
}