StringOp.hh

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#ifndef STRINGOP_HH
#define STRINGOP_HH

#include "string_view.hh"
#include "stringsp.hh"
#include <string>
#include <vector>
#include <set>
#include <sstream>
#include <iomanip>
#include <algorithm>
#include <cstdint>
#if defined(__APPLE__)
#include <CoreFoundation/CoreFoundation.h>
#endif

namespace StringOp
{
        int stringToInt(const std::string& str);
        bool stringToInt(const std::string& str, int& result);
        unsigned stringToUint(const std::string& str);
        bool stringToUint(const std::string& str, unsigned& result);
        uint64_t stringToUint64(const std::string& str);
        bool stringToBool(string_view str);
        double stringToDouble(const std::string& str);
        bool stringToDouble(const std::string& str, double& result);

        std::string toLower(string_view str);

        bool startsWith(string_view total, string_view part);
        bool startsWith(string_view total, char part);
        bool endsWith  (string_view total, string_view part);
        bool endsWith  (string_view total, char part);

        void trimRight(std::string& str, const char* chars);
        void trimRight(std::string& str, char chars);
        void trimRight(string_view& str, string_view chars);
        void trimRight(string_view& str, char chars);
        void trimLeft (std::string& str, const char* chars);
        void trimLeft (std::string& str, char chars);
        void trimLeft (string_view& str, string_view chars);
        void trimLeft (string_view& str, char chars);
        void trim     (string_view& str, string_view chars);
        void trim     (string_view& str, char chars);

        void splitOnFirst(string_view str, string_view chars,
                          string_view& first, string_view& last);
        void splitOnFirst(string_view str, char chars,
                          string_view& first, string_view& last);
        void splitOnLast (string_view str, string_view chars,
                          string_view& first, string_view& last);
        void splitOnLast (string_view str, char chars,
                          string_view& first, string_view& last);
        std::vector<string_view> split(string_view str, char chars);
        std::string join(const std::vector<string_view>& elems,
                         char separator);
        std::set<unsigned> parseRange(string_view str,
                                      unsigned min, unsigned max);

        // case insensitive less-than operator
        struct caseless {
                bool operator()(string_view s1, string_view s2) const {
                        auto m = std::min(s1.size(), s2.size());
                        int r = strncasecmp(s1.data(), s2.data(), m);
                        return (r != 0) ? (r < 0) : (s1.size() < s2.size());
                }
        };
        struct casecmp {
                bool operator()(string_view s1, string_view s2) const {
                        if (s1.size() != s2.size()) return false;
                        return strncasecmp(s1.data(), s2.data(), s1.size()) == 0;
                }
        };

#if defined(__APPLE__)
        std::string fromCFString(CFStringRef str);
#endif
}

#endif