(Tcl) CSV Column Names

Demonstrates how to access CSV column names.

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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load ./chilkat.dll

# 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

set csv [new_CkCsv]

# Prior to loading the CSV file, indicate that the 1st row
# should be treated as column names:
CkCsv_put_HasColumnNames $csv 1

# Load the CSV records from the file:

set success [CkCsv_LoadFile $csv "sample.csv"]
if {$success != 1} then {
    puts [CkCsv_lastErrorText $csv]
    delete_CkCsv $csv
    exit
}

# Display the column names:

for {set i 0} {$i <= [expr [CkCsv_get_NumColumns $csv] - 1]} {incr i} {
    set colName [CkCsv_getColumnName $csv $i]
    puts "$i: $colName"

    # The following line demonstrates to to get the column
    # index given a column name:
    set idx [CkCsv_GetIndex $csv $colName]
    puts "$colName is at column index $idx"
}

delete_CkCsv $csv