(Unicode C) Eval JavaScript Returning String

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Note: This example requires Chilkat v11.4.0 or greater.

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#include <C_CkStringBuilderW.h>
#include <C_CkJsW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkStringBuilderW sbScript;
    HCkJsW js;
    HCkJsonObjectW result;

    success = FALSE;

    // This example demonstrates getting the completion value of a script,
    // where the last evaluated expression is a string.

    // The Javascript run in this example is shown below.

    // Load the JavaScript from a file.
    sbScript = CkStringBuilderW_Create();
    success = CkStringBuilderW_LoadFile(sbScript,L"js_eval_return_string.js",L"utf-8");
    if (success == FALSE) {
        wprintf(L"%s\n",CkStringBuilderW_lastErrorText(sbScript));
        CkStringBuilderW_Dispose(sbScript);
        return;
    }

    js = CkJsW_Create();
    result = CkJsonObjectW_Create();

    // Run the JavaScript
    // Eval returns the completion value of the script. This is generally the value of the last evaluated expression.
    // In this case, the last evaluated expression is a string.
    success = CkJsW_Eval(js,sbScript,result);
    if (success == FALSE) {
        wprintf(L"%s\n",CkStringBuilderW_lastErrorText(sbScript));
        CkStringBuilderW_Dispose(sbScript);
        CkJsW_Dispose(js);
        CkJsonObjectW_Dispose(result);
        return;
    }

    CkJsonObjectW_putEmitCompact(result,FALSE);
    wprintf(L"%s\n",CkJsonObjectW_emit(result));

    // Output:

    // {
    //   "type": "string",
    //   "value": "Ready for Chilkat.Js"
    // }


    CkStringBuilderW_Dispose(sbScript);
    CkJsW_Dispose(js);
    CkJsonObjectW_Dispose(result);

    }

var status = "Ready";
var system = "Chilkat.Js";

// The last statement is an expression
status + " for " + system;