Implementing new Solution refs #13207

git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/social-networking/social-util-library@176732 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/social_networking/socialutillibrary/MessageParser.java

@@ -0,0 +1,61 @@
+package org.gcube.social_networking.socialutillibrary;
+
+import java.io.StringWriter;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.gcube.socialnetworking.token.ReplaceableToken;
+import org.gcube.socialnetworking.token.TagToken;
+import org.gcube.socialnetworking.token.Token;
+import org.gcube.socialnetworking.token.URLToken;
+
+public class MessageParser {
+
+	private final String originalMessage;
+	
+	private StringWriter stringWriter;
+	private List<ReplaceableToken> tokens;
+	
+	public MessageParser(String message) {
+		this.originalMessage = message;
+	}
+	
+	public List<ReplaceableToken> getTokens() {
+		if(tokens==null){
+			tokens = new ArrayList<>();
+			SocialStringTokenizer socialStringTokenizer = new SocialStringTokenizer(originalMessage);
+			for(Token token : socialStringTokenizer.getTokens()) {
+				String tokenString = token.getToken();
+				if(tokenString.startsWith("#")) {
+					TagToken tagToken = new TagToken(token);
+					tokens.add(tagToken);
+					continue;
+				}
+				
+				URL url = URLToken.isURL(tokenString);
+				if(url!=null) {
+					URLToken urlToken = new URLToken(token, url);
+					tokens.add(urlToken);
+					continue;
+				}
+				
+				ReplaceableToken replaceableToken = new ReplaceableToken(token);
+				tokens.add(replaceableToken);
+			}
+		}
+		return tokens;
+	}
+	
+	public String getParsedMessage() {
+		if(stringWriter==null) {
+			stringWriter = new StringWriter();
+			for(ReplaceableToken token : getTokens()) {
+				stringWriter.append(token.getTokenReplacement());
+				stringWriter.append(token.getDelimiter());
+			}
+		}
+		return stringWriter.toString();
+	}
+	
+}

src/main/java/org/gcube/social_networking/socialutillibrary/SocialStringTokenizer.java

@@ -0,0 +1,49 @@
+package org.gcube.social_networking.socialutillibrary;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.gcube.socialnetworking.token.Token;
+
+public class SocialStringTokenizer {
+
+	private final String originalString;
+	
+	private Pattern pattern;
+	private Matcher matcher;
+	
+	private List<Token> tokens;
+	
+	public SocialStringTokenizer(String string) {
+		this.originalString = string;
+		this.pattern = Pattern.compile("\\s");
+	    this.matcher = pattern.matcher(originalString);
+	}
+
+	public List<Token> getTokens() {
+		if(tokens==null) {
+			tokens = new ArrayList<>();
+			int tokenStart = 0;
+			while(matcher.find()) {
+				int tokenEnd = matcher.start();
+				String tokenString = originalString.substring(tokenStart, tokenEnd);
+				int delimiterStart = tokenEnd;
+				int delimiterEnd = matcher.end(); 
+				String delimiter = originalString.substring(delimiterStart, delimiterEnd);
+				Token token = new Token(tokenString, delimiter, tokenStart, tokenEnd);
+				tokens.add(token);
+				tokenStart = delimiterEnd;
+			}
+			if(tokenStart!=originalString.length()){
+				int tokenEnd = originalString.length();
+				String tokenString = originalString.substring(tokenStart, tokenEnd);
+				Token token = new Token(tokenString, "", tokenStart, tokenEnd);
+				tokens.add(token);
+			}
+		}
+		return tokens;
+	}
+	
+}

src/main/java/org/gcube/socialnetworking/token/ReplaceableToken.java

@@ -0,0 +1,21 @@
+package org.gcube.socialnetworking.token;
+
+public class ReplaceableToken extends Token {
+
+	protected String tokenReplacement; 
+	
+	public ReplaceableToken(Token token) {
+		super(token.token, token.delimiter, token.start, token.end);
+		this.tokenReplacement = token.token;
+	}
+	
+	public ReplaceableToken(Token token, String tokenReplacement) {
+		super(token.token, token.delimiter, token.start, token.end);
+		this.tokenReplacement = tokenReplacement;
+	}
+
+	public String getTokenReplacement() {
+		return tokenReplacement;
+	}
+	
+}

src/main/java/org/gcube/socialnetworking/token/TagToken.java

@@ -0,0 +1,9 @@
+package org.gcube.socialnetworking.token;
+
+public class TagToken extends ReplaceableToken {
+
+	public TagToken(Token token) {
+		super(token, "#MY_MASSI_TAG");
+	}
+	
+}

src/main/java/org/gcube/socialnetworking/token/Token.java

@@ -0,0 +1,45 @@
+package org.gcube.socialnetworking.token;
+
+public class Token{
+	
+	final String token;
+	final String delimiter;
+	final int start;
+	final int end;
+	
+	/**
+	 * @param token the Token String
+	 * @param delimiter the delimiter after token
+	 * @param start the start point in the original String 
+	 * @param end the end point in the original String
+	 */
+	public Token(String token, String delimiter, int start, int end){
+		this.token = token;
+		this.delimiter = delimiter;
+		this.start = start;
+		this.end = end;
+	}
+
+	public String getToken() {
+		return token;
+	}
+
+	public String getDelimiter() {
+		return delimiter;
+	}
+
+	public int getStart() {
+		return start;
+	}
+
+	public int getEnd() {
+		return end;
+	}
+	
+	@Override
+	public String toString() {
+		return String.format("Token '%s', Subsequent delimiter '%s', Start '%d', End '%d'", token, delimiter, start, end);
+	}
+	
+	
+}

src/main/java/org/gcube/socialnetworking/token/URLToken.java

@@ -0,0 +1,33 @@
+package org.gcube.socialnetworking.token;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+public class URLToken extends ReplaceableToken {
+
+	
+	private String getReplacement(URL url) {
+		StringBuilder sb = new StringBuilder();
+		return sb.toString();
+	}
+	
+	public URLToken(Token token, URL url) {
+		super(token);
+		this.tokenReplacement = "___URL____";
+	}
+	
+	
+	public static URL isURL(String string) {
+		if(string.startsWith("www.")) {
+			string = "http://" + string;
+		}
+		try {
+			return new URL(string);
+		} catch(MalformedURLException e) {
+			// not an URL
+			return null;
+		}
+		
+	}
+	
+}