Choosing The Right Server-Side Scripting Language
By Craig McElwee
2004-01-06
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Task 6: Split Comma-Delimited Line Into Variables
Your script reads a line from a CSV file. How easily does it separate each field into individual variables, in this case, a, b, c, and d? Perl, PHP, and Python all have a handy 'split' function, taking the string to be split and the delimiter used for splitting as arguments. Java servlets and Tcl require you to set each field individually. While fine for this example, this latter approach would be prohibitive if each line had a large number of fields.
Perl:
($a,$b,$c,$d) = split /,/, $lines[@lines-1];
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PHP:
list( $a,$b,$c,$d ) = split( ",", $last, 4 );
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Python:
a,b,c,d = splitfields(lines[-1], ',')
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Java:
String a, b, c, d;
StringTokenizer st = new StringTokenizer(last, ",");
a = st.nextToken();
b = st.nextToken();
c = st.nextToken();
d = st.nextToken();
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Tcl:
set fieldlist [split $last ,]
set a [lindex $fieldlist 0]
set b [lindex $fieldlist 1]
set c [lindex $fieldlist 2]
set d [lindex $fieldlist 3]
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First published by IBM developerWorks
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