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tj committed Jul 23, 2011
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3 changes: 3 additions & 0 deletions .gitignore
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.DS_Store
node_modules
*.sock
4 changes: 4 additions & 0 deletions .npmignore
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support
test
examples
*.sock
5 changes: 5 additions & 0 deletions History.md
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0.0.1 / 2010-01-03
==================

* Initial release
5 changes: 5 additions & 0 deletions Makefile
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test:
@echo "populate me"

.PHONY: test
29 changes: 29 additions & 0 deletions Readme.md
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# reds

Redis search for node.js

## License

(The MIT License)

Copyright (c) 2011 TJ Holowaychuk <tj@vision-media.ca>

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
2 changes: 2 additions & 0 deletions index.js
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module.exports = require('./lib/reds');
81 changes: 81 additions & 0 deletions lib/reds.js
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/*!
* reds
* Copyright(c) 2011 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/

/**
* Library version.
*/

exports.version = '0.0.1';

/**
* The word `str` passed is filtered through the
* phonetic algo developed by Lawrence Philips.
*
* @param {String} str
* @return {String}
* @api public
*/

module.exports = function metaphone(str) {
// 1. drop duplicate adjacent letters except for C
str = str.replace(/([abdefghijklmnopqrstuvwxyz])\1/gi, '$1');
// 2. word begins with 'KN', 'GN', 'PN', 'AE', 'WR', drop the first letter
str = str.replace(/(kn|gn|pn|ae|wr)/gi, function(_, a){ return a[1] });
// 3. drop 'B' if after 'M' and if it is at the end of the word.
str = str.replace(/mb\b/gi, 'm');
// 4. 'C' transforms to 'X' if followed by 'IA' or 'H' (unless in latter
// case, it is part of '-SCH-', in which case it transforms to 'K').
// 'C' transforms to 'S' if followed by 'I', 'E', or 'Y'. Otherwise,
// 'C' transforms to 'K'.
str = str.replace(/(ia|h)?c([iey])?/gi, function(_, a, b){
if (a) return a + 'x' + (b || '');
if (b) return (a || '') + 's' + b;
return (a || '') + 'k' + (b || '');
});
// 5. 'D' transforms to 'J' if followed by 'GE', 'GY', or 'GI'.
// Otherwise, 'D' transforms to 'T'.
str = str.replace(/d(g[eyi])?/gi, function(_, a){
if (a) return 'j' + a;
return 't';
});
// 6. drop 'G' if followed by 'H' and 'H' is not at the end
// or before a vowel. Drop 'G' if followed by 'N' or 'NED'
// and is at the end.
// str = str.replace(/gh/gi);
// 7. 'G' transforms to 'J' if before 'I', 'E', or 'Y', and it is
// not in 'GG'. Otherwise, 'G' transforms to 'K'.
str = str.replace(/g([iey])/gi, 'j$1').replace(/g/gi, 'k');
// 8. drop 'H' if after vowel and not before a vowel.
str = str.replace(/([aeiou])h([^aeiou]|$)/gi, '$1$2');
// 9. 'CK' transforms to 'K'.
str = str.replace(/ck/gi, 'k');
// 10. 'PH' transforms to 'F'.
str = str.replace(/ph/gi, 'f');
// 11. 'Q' transforms to 'K'.
str = str.replace(/q/gi, 'k');
// 12. 'S' transforms to 'X' if followed by 'H', 'IO', or 'IA'.
str = str.replace(/s(h|io|ia)/gi, 'x$1');
// 13. 'T' transforms to 'X' if followed by 'IA' or 'IO'. 'TH' transforms
// to '0'. Drop 'T' if followed by 'CH'.
str = str.replace(/t(ia|io)/gi, 'x').replace(/th/gi, '0');
// 14. 'V' transforms to 'F'.
str = str.replace(/v/gi, 'f');
// 15. 'WH' transforms to 'W' if at the beginning. Drop 'W' if not followed by a vowel.
str = str.replace(/^wh/gi, 'w').replace(/w([^aeiou]|$)/gi, '$1');
// 16. 'X' transforms to 'S' if at the beginning. Otherwise, 'X' transforms to 'KS'.
str = str.replace(/^x/gi, 's').replace(/x/gi, 'ks');
// 17. Drop 'Y' if not followed by a vowel.
str = str.replace(/y([^aeiou]|$)/gi, '$1');
// 18. 'Z' transforms to 'S'.
str = str.replace(/z/gi, 's');
// 19. Drop all vowels unless it is the beginning
str = str.replace(/^([aeiou])|([aeiou])/gi, function(_, a, b){
if (a) return a;
return '';
});
return str.toUpperCase();
};
10 changes: 10 additions & 0 deletions package.json
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{
"name": "reds"
, "version": "0.0.1"
, "description": "Redis search for node.js"
, "keywords": []
, "author": "TJ Holowaychuk <tj@vision-media.ca>"
, "dependencies": {}
, "main": "index"
, "engines": { "node": "0.4.x" }
}

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