[pk_soundex] at tagSwap.net: Open Source Lasso Code

[pk_soundex]

Description

Link: [pk_soundex]

Author: Pier Kuipers

Category: Database

Version: 8.x

License: Public Domain

Posted: Jan. 10, 2006

Updated: Jan. 12, 2011

More by this author...

Based on the NARA Soundex Guide (http://www.archives.gov/research_room/genealogy/census/soundex.html) The soundex is a coded surname (last name) index based on the way a surname sounds rather than the way it is spelled. Surnames that sound the same, but are spelled differently, like SMITH and SMYTH, have the same code and are filed together. The soundex coding system was developed so that you can find a surname even though it may have been recorded under various spellings. Every soundex code consists of a letter and three numbers, such as W-252. The letter is always the first letter of the surname. The numbers are assigned to the remaining letters of the surname according to the soundex guide. Zeroes are added at the end if necessary to produce a four-character code. Additional letters are disregarded.

Modified Jan 2011 at the suggestion of Sidney San Martín to include -copy reference.

Parameters

none

Sample Usage

Usage:
[pk_soundex(<string>)]

Example:
[pk_soundex('Washington')] -> W252

Source Code

Click the "Download" button below to retrieve a copy of this tag, including the complete documentation and sample usage shown on this page. Place the downloaded ".inc" file in your LassoStartup folder, restart Lasso, and you can begin using this tag immediately.

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if(!(lasso_tagexists('pk_soundex')));
	
		define_tag('pk_soundex',
			-required='myString',
			-copy);
				
			if((#myString -> length) > 0);
			
				#myString -> uppercase;
				
				local('myStringArray' = ((#myString) -> split:''));
				local('mySoundexCode'=(#myStringArray -> get:1));
				local('fullSoundexCode'=(string));
						
				if(('ËçåÌ®') >> #mySoundexCode);
				
					#mySoundexCode = 'A';
				
				else(('') >> #mySoundexCode);
				
					#mySoundexCode = 'S';
				
				else(('éæè') >> #mySoundexCode);
				
					#mySoundexCode = 'E';
				
				else(('íêëì') >> #mySoundexCode);
				
					#mySoundexCode = 'I';
				
				else(('') >> #mySoundexCode);
				
					#mySoundexCode = 'N';
		
				else(('îïÍ¯Î') >> #mySoundexCode);
				
					#mySoundexCode = 'O';
		
				else(('ôòó') >> #mySoundexCode);
				
					#mySoundexCode = 'U';
		
				/if;
			
				local('thisSoundexCode'=(string));
				local('previousCharacter'=(string));
				local('previousSoundexCode'=(string));
				
				iterate(#myStringArray, local:'temp');
				
					if(loop_count != 1);
			
						#previousCharacter = (#myStringArray -> get((loop_count) - 1));
						
					/if;

					if(#fullSoundexCode -> length > 0);
						
						local('previousSoundexCode'=(#fullSoundexCode -> split('') -> get((#fullSoundexCode -> length))));
					
					else;
						
						local('previousSoundexCode'=(''));
					
					/if;
											
					if(((string_findregexp(#temp, -find='B|F|P|V')) -> size) > 0);
					
						#thisSoundexCode = '1';
						
					else(((string_findregexp(#temp, -find='C|G|J|K|Q|S|X|Z||§')) -> size) > 0);
					
						#thisSoundexCode = '2';
		
					else(((string_findregexp(#temp, -find='D|T')) -> size) > 0);
					
						#thisSoundexCode = '3';
		
					else(((string_findregexp(#temp, -find='L')) -> size) > 0);
					
						#thisSoundexCode = '4';
		
					else(((string_findregexp(#temp, -find='M|N|')) -> size) > 0);
					
						#thisSoundexCode = '5';
		
					else(((string_findregexp(#temp, -find='R')) -> size) > 0);
					
						#thisSoundexCode = '6';
		
					else(((string_findregexp(#temp, -find='B|F|P|V|C|G|J|K|Q|S|X|Z|D|T|L|M|N|R')) -> size) == 0);
					
						#thisSoundexCode = '';
					
					/if;
					
					if(#thisSoundexCode != '');
						#fullSoundexCode += #thisSoundexCode;
					else;
						#fullSoundexCode += 'Z';
					/if;
					
					if(loop_count != 1);
						if((#thisSoundexCode != #previousSoundexCode));
							if(#temp != #previousCharacter);
				
								#mySoundexCode += #thisSoundexCode;
							
							/if;
						/if;
					/if;
					
					if(#mySoundexCode -> length > 3);
					
						Loop_Abort;
						
					/if;
				
				/iterate;
				
				if(#mySoundexCode -> length < 4);
				
					local('x'=(4 - ((#mySoundexCode -> length))));
			
					Loop(#x);
					
						#mySoundexCode += '0';
					
					/Loop;
					
				/if;
				
				return(#mySoundexCode);
			
			else;
			
				return('0000');
			
			/if;

		/define_tag;
		
	/if;

Comments

01/12/2011, Pier Kuipers

Good suggestion indeed :-) Tag has now been updated.

01/05/2011, Sidney San Martín

You might want to add `-Copy` after the `-Required`. Currently, this tag modifies the passed-in string (i.e. if you pass a variable to [pk_soundex], the contents become uppercase).

[pk_soundex]

Description

Parameters

Sample Usage

Source Code

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