(Perl) 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 Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux

use chilkat();

# 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 = chilkat::CkCsv->new();

# Prior to loading the CSV file, indicate that the 1st row
# should be treated as column names:
$csv->put_HasColumnNames(1);

# Load the CSV records from the file:

$success = $csv->LoadFile("sample.csv");
if ($success != 1) {
    print $csv->lastErrorText() . "\r\n";
    exit;
}

# Change "cheese" to "baguette"
# ("cheese" is at row=0, column=3
$success = $csv->SetCell(0,3,"baguette");

# Change "blue" to "magenta"
$success = $csv->SetCell(1,1,"magenta");

# Write the updated CSV to a string and display:

$csvDoc = $csv->saveToString();
print $csvDoc . "\r\n";

# Save the CSV to a file:
$success = $csv->SaveFile("out.csv");
if ($success != 1) {
    print $csv->lastErrorText() . "\r\n";
}