FilterSpec.cpp

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#include "core/domain/values/FilterSpec.h"
 
#include <algorithm>
#include <cctype>
#include <utility>
 
namespace core::domain {
 
namespace {
 
constexpr std::size_t kMaxLength = 1024;
 
} // namespace
 
FilterSpec::FilterSpec(std::string value)
    : value_(normalize(std::move(value))) {}
 
const std::string& FilterSpec::value() const noexcept { return value_; }
 
constexpr std::size_t FilterSpec::maxLength() noexcept {
    return kMaxLength;
}
 
std::string FilterSpec::normalize(std::string value) {
    const auto begin = std::find_if_not(value.begin(), value.end(), [](unsigned char c) {
        return std::isspace(c) != 0;
    });
    const auto end = std::find_if_not(value.rbegin(), value.rend(), [](unsigned char c) {
        return std::isspace(c) != 0;
    }).base();
    if (begin >= end) {
        return {};
    }
    return std::string(begin, end);
}
 
bool FilterSpec::isValid(const std::string& value) {
    const auto normalized = normalize(value);
    return !normalized.empty() && normalized.size() <= maxLength();
}
 
bool FilterSpec::empty() const noexcept {
    return value_.empty();
}
 
} // namespace core::domain