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Fix: Avoid polluting the global namespace with variables. #2

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Fix: Avoid polluting the global namespace with variables. #2

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94 changes: 49 additions & 45 deletions double-metaphone.js
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Original file line number Diff line number Diff line change
Expand Up @@ -37,14 +37,15 @@

exports.double_metaphone = function double_metaphone( string )
{
primary = "";
secondary = "";
current = 0;

current = 0;
length = string.length;
last = length - 1;
original = string + " ";
'use strict';

var primary = "";
var secondary = "";
var current = 0;

var length = string.length;
var last = length - 1;
var original = string + " ";

original = original.toUpperCase();

Expand Down Expand Up @@ -962,48 +963,51 @@ exports.double_metaphone = function double_metaphone( string )
primary: primary,
secondary: secondary
};

} // end of function MetaPhone


/*=================================================================*\
# Name: string_at(string, start, length, list)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/

function string_at(string, start, length, list)
{
if ((start <0) || (start >= string.length))
return 0;

for (var i=0, len=list.length; i<len; i++) {
if (list[i] == string.substr(start, length))
return 1;
/*=================================================================*\
# Private Helper Functions
\*=================================================================*/

/*=================================================================*\
# Name: string_at(string, start, length, list)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/

function string_at(string, start, length, list)
{
if ((start <0) || (start >= string.length))
return 0;

for (var i=0, len=list.length; i<len; i++) {
if (list[i] == string.substr(start, length))
return 1;
}
return 0;
}
return 0;
}


/*=================================================================*\
# Name: is_vowel(string, pos)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/
/*=================================================================*\
# Name: is_vowel(string, pos)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/

function is_vowel(string, pos)
{
return /[AEIOUY]/.test(string.substr(pos, 1));
}
function is_vowel(string, pos)
{
return /[AEIOUY]/.test(string.substr(pos, 1));
}


/*=================================================================*\
# Name: Slavo_Germanic(string, pos)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/
/*=================================================================*\
# Name: Slavo_Germanic(string, pos)
# Purpose: Helper function for double_metaphone( )
# Return: Bool
\*=================================================================*/

function Slavo_Germanic(string)
{
return /W|K|CZ|WITZ/.test(string);
}
function Slavo_Germanic(string)
{
return /W|K|CZ|WITZ/.test(string);
}

} // end of function MetaPhone