Code:
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
/**
* Description: This class generates random names from syllables, and provides programmer a
* simple way to set a group of rules for generator to avoid unpronounceable and bizarre names.
*
* SYLLABLE FILE REQUIREMENTS/FORMAT:
* 1) all syllables are separated by line break.
* 2) Syllable should not contain or start with whitespace, as this character is ignored and only first part of the syllable is read.
* 3) + and - characters are used to set rules, and using them in other way, may result in unpredictable results.
* 4) Empty lines are ignored.
*
* SYLLABLE CLASSIFICATION:
* Name is usually composed from 3 different class of syllables, which include prefix, middle part and suffix.
* To declare syllable a prefix in the file, insert "-" as a first character of the line.
* To declare syllable a suffix in the file, insert "+" as a first character of the line.
* everything else is read as middle part.
*
* NUMBER OF SYLLABLES:
* Names may have any positive number of syllables. In case of 2 syllables, name will be composed from prefix and suffix.
* In case of 1 syllable, name will be chosen from amongst the prefixes.
* In case of 3 and more syllables, name will begin with prefix, is filled with middle parts and ended with suffix.
*
* ASSIGNING RULES:
* I included a way to set 4 kind of rules for every syllable. To add rules to the syllables, write them right after the
* syllable and SEPARATE WITH WHITESPACE. (example: "aad +v -c"). The order of rules is not important.
*
* RULES:
* 1) +v means that next syllable must definitely start with a vocal.
* 2) +c means that next syllable must definitely start with a consonant.
* 3) -v means that this syllable can only added to another syllable, that ends with a vocal.
* 4) -c means that this syllable can only added to another syllable, that ends with a consonant.
* So, our example: "aad +v -c" means that "aad" can only be after consonant and next syllable must start with vocal.
* Beware of creating logical mistakes, like providing only syllables ending with consonants, but expecting only vocals, which will be detected
* and RuntimeException will be thrown.
*
* TO START:
* Create a new GenName object, provide the syllable file, and create names using compose() method.
*
* @author Joonas Vali, August 2009.
*
*/
public class GenName {
ArrayList<String> pre = new ArrayList<String>();
ArrayList<String> mid = new ArrayList<String>();
ArrayList<String> sur = new ArrayList<String>();
private static char[] vocals = {'a', 'e', 'i', 'o', 'u', 'õ', 'ä', 'ö', 'ü', 'y'};
private static char[] consonants = {'b', 'c', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'p', 'q', 'r', 's', 't', 'v', 'w', 'x', 'y'};
private String fileName;
/**
* Create new random name generator object. refresh() is automatically called.
* @param fileName insert file name, where syllables are located
* @throws IOException
*/
public GenName(String fileName) throws IOException{
this.fileName = fileName;
refresh();
}
/**
* Change the file. refresh() is automatically called during the process.
* @param fileName insert the file name, where syllables are located.
* @throws IOException
*/
public void changeFile(String fileName) throws IOException{
if(fileName == null) throw new IOException("File name cannot be null");
this.fileName = fileName;
refresh();
}
/**
* Refresh names from file. No need to call that method, if you are not changing the file during the operation of program, as this method
* is called every time file name is changed or new GenName object created.
* @throws IOException
*/
public void refresh() throws IOException{
FileReader input = null;
BufferedReader bufRead;
String line;
input = new FileReader(fileName);
bufRead = new BufferedReader(input);
line="";
while(line != null){
line = bufRead.readLine();
if(line != null && !line.equals("")){
if(line.charAt(0) == '-'){
pre.add(line.substring(1).toLowerCase());
}
else if(line.charAt(0) == '+'){
sur.add(line.substring(1).toLowerCase());
}
else{
mid.add(line.toLowerCase());
}
}
}
bufRead.close();
}
private String upper(String s){
return s.substring(0,1).toUpperCase().concat(s.substring(1));
}
private boolean containsConsFirst(ArrayList<String> array){
for(String s: array){
if(consonantFirst(s)) return true;
}
return false;
}
private boolean containsVocFirst(ArrayList<String> array){
for(String s: array){
if(vocalFirst(s)) return true;
}
return false;
}
private boolean allowCons(ArrayList<String> array){
for(String s: array){
if(hatesPreviousVocals(s) || hatesPreviousConsonants(s) == false) return true;
}
return false;
}
private boolean allowVocs(ArrayList<String> array){
for(String s: array){
if(hatesPreviousConsonants(s) || hatesPreviousVocals(s) == false) return true;
}
return false;
}
private boolean expectsVocal(String s){
if(s.substring(1).contains("+v")) return true;
else return false;
}
private boolean expectsConsonant(String s){
if(s.substring(1).contains("+c")) return true;
else return false;
}
private boolean hatesPreviousVocals(String s){
if(s.substring(1).contains("-c")) return true;
else return false;
}
private boolean hatesPreviousConsonants(String s){
if(s.substring(1).contains("-v")) return true;
else return false;
}
private String pureSyl(String s){
s = s.trim();
if(s.charAt(0) == '+' || s.charAt(0) == '-') s = s.substring(1);
return s.split(" ")[0];
}
private boolean vocalFirst(String s){
return (String.copyValueOf(vocals).contains(String.valueOf(s.charAt(0)).toLowerCase()));
}
private boolean consonantFirst(String s){
return (String.copyValueOf(consonants).contains(String.valueOf(s.charAt(0)).toLowerCase()));
}
private boolean vocalLast(String s){
return (String.copyValueOf(vocals).contains(String.valueOf(s.charAt(s.length()-1)).toLowerCase()));
}
private boolean consonantLast(String s){
return (String.copyValueOf(consonants).contains(String.valueOf(s.charAt(s.length()-1)).toLowerCase()));
}
/**
* Compose a new name.
* @param syls The number of syllables used in name.
* @return Returns composed name as a String
* @throws RuntimeException when logical mistakes are detected inside chosen file, and program is unable to complete the name.
*/
public String compose(int syls){
if(syls > 2 && mid.size() == 0) throw new RuntimeException("You are trying to create a name with more than 3 parts, which requires middle parts, " +
"which you have none in the file "+fileName+". You should add some. Every word, which doesn't have + or - for a prefix is counted as a middle part.");
if(pre.size() == 0) throw new RuntimeException("You have no prefixes to start creating a name. add some and use \"-\" prefix, to identify it as a prefix for a name. (example: -asd)");
if(sur.size() == 0) throw new RuntimeException("You have no suffixes to end a name. add some and use \"+\" prefix, to identify it as a suffix for a name. (example: +asd)");
if(syls < 1) throw new RuntimeException("compose(int syls) can't have less than 1 syllable");
int expecting = 0; // 1 for vocal, 2 for consonant
int last = 0; // 1 for vocal, 2 for consonant
String name;
int a = (int)(Math.random() * pre.size());
if(vocalLast(pureSyl(pre.get(a)))) last = 1;
else last = 2;
if(syls > 2){
if(expectsVocal(pre.get(a))){
expecting = 1;
if(containsVocFirst(mid) == false) throw new RuntimeException("Expecting \"middle\" part starting with vocal, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
if(expectsConsonant(pre.get(a))){
expecting = 2;
if(containsConsFirst(mid) == false) throw new RuntimeException("Expecting \"middle\" part starting with consonant, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
}
else{
if(expectsVocal(pre.get(a))){
expecting = 1;
if(containsVocFirst(sur) == false) throw new RuntimeException("Expecting \"suffix\" part starting with vocal, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
if(expectsConsonant(pre.get(a))){
expecting = 2;
if(containsConsFirst(sur) == false) throw new RuntimeException("Expecting \"suffix\" part starting with consonant, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
}
if(vocalLast(pureSyl(pre.get(a))) && allowVocs(mid) == false) throw new RuntimeException("Expecting \"middle\" part that allows last character of prefix to be a vocal, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the prefix used, was : \""+pre.get(a)+"\", which" +
"means there should be a part available, that has \"-v\" requirement or no requirements for previous syllables at all.");
if(consonantLast(pureSyl(pre.get(a))) && allowCons(mid) == false) throw new RuntimeException("Expecting \"middle\" part that allows last character of prefix to be a consonant, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the prefix used, was : \""+pre.get(a)+"\", which" +
"means there should be a part available, that has \"-c\" requirement or no requirements for previous syllables at all.");
int b[] = new int[syls];
for(int i = 0; i<b.length-2; i++){
do{
b[i] = (int)(Math.random() * mid.size());
//System.out.println("exp " +expecting+" vocalF:"+vocalFirst(mid.get(b[i]))+" syl: "+mid.get(b[i]));
}
while(expecting == 1 && vocalFirst(pureSyl(mid.get(b[i]))) == false || expecting == 2 && consonantFirst(pureSyl(mid.get(b[i]))) == false
|| last == 1 && hatesPreviousVocals(mid.get(b[i])) || last == 2 && hatesPreviousConsonants(mid.get(b[i])));
expecting = 0;
if(expectsVocal(mid.get(b[i]))){
expecting = 1;
if(i < b.length-3 && containsVocFirst(mid) == false) throw new RuntimeException("Expecting \"middle\" part starting with vocal, " +
"but there is none. You should add one, or remove requirement for one.. ");
if(i == b.length-3 && containsVocFirst(sur) == false) throw new RuntimeException("Expecting \"suffix\" part starting with vocal, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
if(expectsConsonant(mid.get(b[i]))){
expecting = 2;
if(i < b.length-3 && containsConsFirst(mid) == false) throw new RuntimeException("Expecting \"middle\" part starting with consonant, " +
"but there is none. You should add one, or remove requirement for one.. ");
if(i == b.length-3 && containsConsFirst(sur) == false) throw new RuntimeException("Expecting \"suffix\" part starting with consonant, " +
"but there is none. You should add one, or remove requirement for one.. ");
}
if(vocalLast(pureSyl(mid.get(b[i]))) && allowVocs(mid) == false && syls > 3) throw new RuntimeException("Expecting \"middle\" part that allows last character of last syllable to be a vocal, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the part used, was : \""+mid.get(b[i])+"\", which " +
"means there should be a part available, that has \"-v\" requirement or no requirements for previous syllables at all.");
if(consonantLast(pureSyl(mid.get(b[i]))) && allowCons(mid) == false && syls > 3) throw new RuntimeException("Expecting \"middle\" part that allows last character of last syllable to be a consonant, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the part used, was : \""+mid.get(b[i])+"\", which " +
"means there should be a part available, that has \"-c\" requirement or no requirements for previous syllables at all.");
if(i == b.length-3){
if(vocalLast(pureSyl(mid.get(b[i]))) && allowVocs(sur) == false) throw new RuntimeException("Expecting \"suffix\" part that allows last character of last syllable to be a vocal, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the part used, was : \""+mid.get(b[i])+"\", which " +
"means there should be a suffix available, that has \"-v\" requirement or no requirements for previous syllables at all.");
if(consonantLast(pureSyl(mid.get(b[i]))) && allowCons(sur) == false) throw new RuntimeException("Expecting \"suffix\" part that allows last character of last syllable to be a consonant, " +
"but there is none. You should add one, or remove requirements that cannot be fulfilled.. the part used, was : \""+mid.get(b[i])+"\", which " +
"means there should be a suffix available, that has \"-c\" requirement or no requirements for previous syllables at all.");
}
if(vocalLast(pureSyl(mid.get(b[i])))) last = 1;
else last = 2;
}
int c;
do{
c = (int)(Math.random() * sur.size());
}
while(expecting == 1 && vocalFirst(pureSyl(sur.get(c))) == false || expecting == 2 && consonantFirst(pureSyl(sur.get(c))) == false
|| last == 1 && hatesPreviousVocals(sur.get(c)) || last == 2 && hatesPreviousConsonants(sur.get(c)));
name = upper(pureSyl(pre.get(a).toLowerCase()));
for(int i = 0; i<b.length-2; i++){
name = name.concat(pureSyl(mid.get(b[i]).toLowerCase()));
}
if(syls > 1)
name = name.concat(pureSyl(sur.get(c).toLowerCase()));
return name;
}
}
LinkBack URL
About LinkBacks
Reply With Quote
Bookmarks
Algorithms and Data Structures
Java tutorials
Algorithms Forum