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(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.

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#include <C_CkCsv.h>

void ChilkatSample(void)
    {
    HCkCsv csv;
    BOOL success;
    const char *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 = CkCsv_Create();

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

    //  Load the CSV records from the file:

    success = CkCsv_LoadFile(csv,"sample.csv");
    if (success != TRUE) {
        printf("%s\n",CkCsv_lastErrorText(csv));
        CkCsv_Dispose(csv);
        return;
    }

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

    //  Change "blue" to "magenta"
    CkCsv_SetCell(csv,1,1,"magenta");

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

    csvDoc = CkCsv_saveToString(csv);
    printf("%s\n",csvDoc);

    //  Save the CSV to a file:
    success = CkCsv_SaveFile(csv,"out.csv");
    if (success != TRUE) {
        printf("%s\n",CkCsv_lastErrorText(csv));
    }



    CkCsv_Dispose(csv);

    }

 

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