cppjieba/limonp/str_functs.hpp

/************************************
 * file enc : ascii
 * author   : wuyanyi09@gmail.com
 ************************************/
#ifndef LIMONP_STR_FUNCTS_H
#define LIMONP_STR_FUNCTS_H
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <cctype>
#include <map>
#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include <memory.h>
#include "typedefs.h"
#include <functional> 
#include <locale>
namespace Limonp
{
    using namespace std;
    inline string string_format(const char* fmt, ...) 
    {
        int size = 256;
        std::string str;
        va_list ap;
        while (1) {
            str.resize(size);
            va_start(ap, fmt);
            int n = vsnprintf((char *)str.c_str(), size, fmt, ap);
            va_end(ap);
            if (n > -1 && n < size) {
                str.resize(n);
                return str;
            }
            if (n > -1)
              size = n + 1;
            else
              size *= 2;
        }
        return str;
    }
    
    inline void string_format(string& res, const char* fmt, ...)
    {
        int size = 256;
        va_list ap;
        while (1) {
            res.resize(size);
            va_start(ap, fmt);
            int n = vsnprintf((char *)res.c_str(), size, fmt, ap);
            va_end(ap);
            if (n > -1 && n < size) {
                res.resize(n);
                return;
            }
            if (n > -1)
              size = n + 1;
            else
              size *= 2;
        }
    }

    inline bool joinStr(const vector<string>& src, string& dest, const string& connectorStr)
    {
        if(src.empty())
        {
            return false;
        }
        for(uint i = 0; i < src.size() - 1; i++)
        {
            dest += src[i];
            dest += connectorStr;
        }
        dest += src[src.size() - 1];
        return true;
    }

    inline string joinStr(const vector<string>& source, const string& connector)
    {
        string res;
        joinStr(source, res, connector);
        return res;
    }

    inline bool splitStr(const string& src, vector<string>& res, const string& pattern)
    {
        if(src.empty())
        {
            return false;
        }
        res.clear();

        size_t start = 0;
        size_t end = 0;
        while(start < src.size())
        {
            end = src.find_first_of(pattern, start);
            if(string::npos == end)
            {
                res.push_back(src.substr(start));
                return true;
            }
            res.push_back(src.substr(start, end - start));
			if(end == src.size() - 1)
			{
				res.push_back("");
				break;
			}
            start = end + 1;
        }
        return true;
    }

    inline string upperStr(const string& strIn)
    {
        string str = strIn;
        transform(str.begin(), str.end(), str.begin(), (int (*)(int))toupper);
        return str;
    }

    inline string lowerStr(const string& strIn)
    {
        string str = strIn;
        transform(str.begin(), str.end(), str.begin(), (int (*)(int))tolower);
        return str;
    }

    inline std::string &ltrim(std::string &s) 
    {
        s.erase(s.begin(), std::find_if(s.begin(), s.end(), std::not1(std::ptr_fun<int, int>(std::isspace))));
        return s;
    }

    inline std::string &rtrim(std::string &s) 
    {
        s.erase(std::find_if(s.rbegin(), s.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end());
        return s;
    }

    inline std::string &trim(std::string &s) 
    {
        return ltrim(rtrim(s));
    }


    inline uint16_t twocharToUint16(char high, char low)
    {
        return (((uint16_t(high) & 0x00ff ) << 8) | (uint16_t(low) & 0x00ff));
    }

    inline pair<char, char> uint16ToChar2(uint16_t in)
    {
        pair<char, char> res;
        res.first = (in>>8) & 0x00ff; //high
        res.second = (in) & 0x00ff; //low
        return res;
    }

    inline bool strStartsWith(const string& str, const string& prefix)
    {
        //return str.substr(0, prefix.size()) == prefix;
        if(prefix.length() > str.length())
        {
            return false;
        }
        return 0 == str.compare(0, prefix.length(), prefix);
    }

    inline bool strEndsWith(const string& str, const string& suffix)
    {
        if(suffix.length() > str.length())
        {
            return false;
        }
        return 0 == str.compare(str.length() -  suffix.length(), suffix.length(), suffix);
    }

    inline bool isInStr(const string& str, char ch)
    {
        return str.find(ch) != string::npos;
    }

    inline void extractWords(const string& sentence, vector<string>& words)
    {
        bool flag = false;
        uint lhs = 0, len = 0;
        for(uint i = 0; i < sentence.size(); i++)
        {
            char x = sentence[i];
            if((0x0030 <= x && x<= 0x0039) || (0x0041 <= x && x <= 0x005a ) || (0x0061 <= x && x <= 0x007a))
            {
                if(flag)
                {
                    len ++;
                }
                else
                {
                    lhs = i;
                    len = 1;
                }
                flag = true;
            }
            else
            {
                if(flag)
                {
                    words.push_back(string(sentence, lhs, len));
                }
                flag = false;
            }
        }
        if(flag)
        {
            words.push_back(string(sentence, lhs, len));
        }
    }


}
#endif