(Unicode C) Update CSV File

Demonstrates how to read a CSV, update some cells, and save.

The Chilkat CSV library/component/class is freeware. The downloads for .NET, C++, Perl, Java, Ruby, and Python contain all of the Chilkat classes, some of which are freeware and some of which require licensing.

Chilkat C/C++ Library Downloads
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#include <C_CkCsvW.h>

void ChilkatSample(void)
    {
    HCkCsvW csv;
    BOOL success;
    const wchar_t *csvDoc;

    // This example program loads a file (sample.csv)
    // that contains this content:
    // 
    // year,color,country,food
    // 2001,red,France,cheese
    // 2005,blue,"United States",hamburger
    // 2008,green,Italy,pasta
    // 1998,orange,Japan,sushi
    // 
    // The first row contains the column names.
    // This file is available at:
    // http://www.chilkatsoft.com/testData/sample.csv

    csv = CkCsvW_Create();

    // Prior to loading the CSV file, indicate that the 1st row
    // should be treated as column names:
    CkCsvW_putHasColumnNames(csv,TRUE);

    // Load the CSV records from the file:

    success = CkCsvW_LoadFile(csv,L"sample.csv");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCsvW_lastErrorText(csv));
        CkCsvW_Dispose(csv);
        return;
    }

    // Change "cheese" to "baguette"
    // ("cheese" is at row=0, column=3
    success = CkCsvW_SetCell(csv,0,3,L"baguette");

    // Change "blue" to "magenta"
    success = CkCsvW_SetCell(csv,1,1,L"magenta");

    // Write the updated CSV to a string and display:

    csvDoc = CkCsvW_saveToString(csv);
    wprintf(L"%s\n",csvDoc);

    // Save the CSV to a file:
    success = CkCsvW_SaveFile(csv,L"out.csv");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCsvW_lastErrorText(csv));
    }



    CkCsvW_Dispose(csv);

    }