(C++) Implement Preprocessor #include with StringBuilder

Demonstrates how to implement #include with a Chilkat StringBuilder.

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#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    // First build a string that has a preprocessor include
    CkStringBuilder sbSrc;
    sbSrc.Append("1\r\n2\r\n3\r\n");
    sbSrc.Append("#include <qa_data/txt/helloWorld.txt>\r\n");
    sbSrc.Append("4\r\n5\r\n");

    std::cout << sbSrc.getAsString() << "\r\n";

    // sbSrc contains:
    // 	1
    // 	2
    // 	3
    // 	#include <qa_data/txt/helloWorld.txt>
    // 	4
    // 	5

    // The qa_data/txt/helloWorld.txt file contains "Hello World!"

    const char *filePath = sbSrc.getAfterBetween("#include","<",">");
    if (sbSrc.get_LastMethodSuccess() != true) {
        std::cout << "No #include's found." << "\r\n";
        return;
    }

    std::cout << "filePath: " << filePath << "\r\n";

    // Load the contents of the filePath
    CkStringBuilder sbIncludeFile;
    sbIncludeFile.LoadFile(filePath,"utf-8");

    // Replace the first occurrence of #include <...> line with the contents of the include file.
    sbSrc.ReplaceAllBetween("#include",">",sbIncludeFile.getAsString(),true);

    std::cout << sbSrc.getAsString() << "\r\n";

    // sbSrce now contains:
    // 	1
    // 	2
    // 	3
    // 	Hello World!
    // 	4
    // 	5
    }