Commit abc1a88b authored by tqcq's avatar tqcq
Browse files

feat add StrSpilt,Trim,TrimLeft,TrimRight

parent 3dccac62

include/sled/strings/utils.h

+10 −0
Original line number Diff line number Diff line 
#pragma once

#ifndef SLED_STRINGS_UTILS_H

#define SLED_STRINGS_UTILS_H

#include <string>

#include <vector>



namespace sled {
@@ -10,6 +12,14 @@ std::string ToHex(const std::string &str); 
std::string StrJoin(const std::vector<std::string> &strings,

                    const std::string &delim,

                    bool skip_empty = false);

std::vector<std::string> StrSplit(const std::string &str,

                                  const std::string &delim,

                                  bool skip_empty = false);

std::string Trim(const std::string &str, const std::string &chars = " \t\n\r");

std::string TrimLeft(const std::string &str,

                     const std::string &chars = " \t\n\r");

std::string TrimRight(const std::string &str,

                      const std::string &chars = " \t\n\r");



}// namespace sled

#endif//   SLED_STRINGS_UTILS_H

src/strings/utils.cc

+45 −0
Original line number Diff line number Diff line
@@ -20,4 +20,49 @@ StrJoin(const std::vector<std::string> &strings, 
    }

    return ss.str();

}



std::vector<std::string>

StrSplit(const std::string &str, const std::string &delim, bool skip_empty)

{

    std::vector<std::string> result;

    if (str.empty()) { return result; }



    size_t start = 0;

    size_t next_pos = str.find_first_of(delim, start);

    while (next_pos != std::string::npos) {

        if (!skip_empty || next_pos > start) {

            result.emplace_back(str.substr(start, next_pos - start));

        }

        start = next_pos + 1;

        next_pos = str.find_first_of(delim, start);

    }



    if (start < str.size()) { result.emplace_back(str.substr(start)); }

    return result;

}



std::string

Trim(const std::string &str, const std::string &chars)

{

    return TrimLeft(TrimRight(str));

}



std::string

TrimLeft(const std::string &str, const std::string &chars)

{

    size_t start = 0;

    while (start < str.size() && chars.find(str[start]) != std::string::npos) {

        ++start;

    }

    return str.substr(start);

}



std::string

TrimRight(const std::string &str, const std::string &chars)

{

    size_t end = str.size();

    while (end > 0 && chars.find(str[end - 1]) != std::string::npos) { --end; }

    return str.substr(0, end);

}



}// namespace sled