C++ source code to replace regular expressions by boost.

BoostRegexR.cpp

/*
 * Replacement of regular expressions by boost.
 */
#include <iostream>
#include <string>
#include <boost/regex.hpp>     // require "boost-regex-dev"

using namespace std;

/*
 * [CLASS] Process
 */
class Proc
{
    // Private Declaration
    string       sSrc;          // Source string
    string       sFmtA, sFmtS;  // Replace string (All, Sub)
    boost::regex reA, reS;      // Regular expression (All, Sub)
    string       result;        // Result
    bool regexReplaceA(string, boost::regex, string);  // All replace
    bool regexReplaceS(string, boost::regex, string);  // Sub replace

public:
    Proc();           // Constructor
    bool execMain();  // Main Process
};

/*
 * Proc - Constructor
 */
Proc::Proc()
{
    // Initial settings
    sSrc  = "RedHatEnterpriseリナックス CentOS サイエンティフィックLinux Fedora VineLinux";
    reA   = "Linux";                   // All matching - Regular expression
    sFmtA = "リナックス";              // All matching - Replace string
    reS   = "([^ ]+)(Linux)";          // Sub matching - Regular expression
    sFmtS = "(?1****)(?2リナックス)";  // Sub matching - Replace string
}

/*
 * Main Process
 */
bool Proc::execMain()
{
    try {
        // Replace (All match)
        if (!regexReplaceA(sSrc, reA, sFmtA)) return false;

        // Replace (Sub match)
        if (!regexReplaceS(sSrc, reS, sFmtS)) return false;
    } catch (char *e) {
        cerr << "[EXCEPTION] " << e << endl;
        return false;
    }
    return true;
}

// Replace (All match)
bool Proc::regexReplaceA(string sSrc, boost::regex re, string sFmt)
{
    try {
        cout << "[Source string]\n  " << sSrc << "\n"
             << "[Replace]\n  " << re << " -> "
             << sFmt << endl;
        result = boost::regex_replace(sSrc, re, sFmt);
        cout << "[Result]\n  " << result << endl;
    } catch (char *e) {
        cerr << "[EXCEPTION] " << e << endl;
        return false;
    }
    cout << endl;
    return true;
}

// Replace (Sub match)
bool Proc::regexReplaceS(string sSrc, boost::regex re, string sFmt)
{
    try {
        cout << "[Source string]\n  " << sSrc << "\n"
             << "[Replace]\n  " << re << " -> "
             << sFmt << endl;
        result = boost::regex_replace(
            sSrc, re, sFmt, boost::match_default | boost::format_all
        );
        cout << "[Result]\n  " << result << endl;
    } catch (char *e) {
        cerr << "[EXCEPTION] " << e << endl;
        return false;
    }
    cout << endl;
    return true;
}

/*
 * Execution
 */
int main(){
    try {
        Proc objMain;
        bool bRet = objMain.execMain();
        if (!bRet) cout << "ERROR!" << endl;
    } catch (char *e) {
        cerr << "[EXCEPTION] " << e << endl;
        return 1;
    }
    return 0;
}