Merge branch 'Tcoffee_JAL-1065' of https://source.jalview.org/git/jalview into test_p...
[jalview.git] / src / jalview / io / TCoffeeScoreFile.java
diff --git a/src/jalview/io/TCoffeeScoreFile.java b/src/jalview/io/TCoffeeScoreFile.java
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+package jalview.io;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * A file parse for T-Coffee score ascii format. This file contains the alignment consensus 
+ * for each resude in any sequence.
+ * <p>
+ * This file is procuded by <code>t_coffee</code> providing the option 
+ * <code>-output=score_ascii </code> to the program command line
+ * 
+ * An example file is the following 
+ * 
+ * <pre>
+ * T-COFFEE, Version_9.02.r1228 (2012-02-16 18:15:12 - Revision 1228 - Build 336)
+ * Cedric Notredame 
+ * CPU TIME:0 sec.
+ * SCORE=90
+ * *
+ *  BAD AVG GOOD
+ * *
+ * 1PHT   :  89
+ * 1BB9   :  90
+ * 1UHC   :  94
+ * 1YCS   :  94
+ * 1OOT   :  93
+ * 1ABO   :  94
+ * 1FYN   :  94
+ * 1QCF   :  94
+ * cons   :  90
+ * 
+ * 1PHT   999999999999999999999999998762112222543211112134
+ * 1BB9   99999999999999999999999999987-------4322----2234
+ * 1UHC   99999999999999999999999999987-------5321----2246
+ * 1YCS   99999999999999999999999999986-------4321----1-35
+ * 1OOT   999999999999999999999999999861-------3------1135
+ * 1ABO   99999999999999999999999999986-------422-------34
+ * 1FYN   99999999999999999999999999985-------32--------35
+ * 1QCF   99999999999999999999999999974-------2---------24
+ * cons   999999999999999999999999999851000110321100001134
+ * 
+ * 
+ * 1PHT   ----------5666642367889999999999889
+ * 1BB9   1111111111676653-355679999999999889
+ * 1UHC   ----------788774--66789999999999889
+ * 1YCS   ----------78777--356789999999999889
+ * 1OOT   ----------78877--356789999999997-67
+ * 1ABO   ----------687774--56779999999999889
+ * 1FYN   ----------6888842356789999999999889
+ * 1QCF   ----------6878742356789999999999889
+ * cons   00100000006877641356789999999999889
+ * </pre>
+ * 
+ * 
+ * @author Paolo Di Tommaso
+ *
+ */
+public class TCoffeeScoreFile {
+       
+       /** The {@link Header} structure holder */
+       Header header;
+       
+       /** 
+        * Holds the consensues values for each sequences. It uses a LinkedHashMap to maintaint the 
+        * insertion order. 
+        */
+       LinkedHashMap<String,StringBuilder> scores = new LinkedHashMap<String,StringBuilder>();
+       
+
+       /**
+        * Parse the specified file.
+        * 
+        * @param file The file to be parsed 
+        */
+       public static TCoffeeScoreFile load(File file) {
+               try {
+                       return load(new FileReader(file));
+               } 
+               catch (FileNotFoundException e) {
+                       throw new RuntimeException(e);
+               }
+       }
+       
+       /**
+        * Parse the provided reader for the T-Coffee scores file format
+        * 
+        * @param reader 
+        */
+       public static TCoffeeScoreFile load(Reader reader) {
+
+               try {
+                       BufferedReader in = (BufferedReader) (reader instanceof BufferedReader ? reader : new BufferedReader(reader));
+                       TCoffeeScoreFile result = new TCoffeeScoreFile();
+                       result.doParsing(in);
+                       return result.header != null && result.scores != null ? result : null;
+               }
+               catch( Exception e) {
+                       throw new RuntimeException(e);
+               }
+       }
+               
+       /**
+        * The default constructor is marked as {@code protected} since this class is meant to created 
+        * through the {@link #load(File)} or {@link #load(Reader)} factory methods
+        */
+       protected TCoffeeScoreFile() { } 
+       
+       /**
+        * Get the string of score values for the specified seqeunce ID. 
+        * @param id The sequence ID 
+        * @return The scores as a string of values e.g. {@code 99999987-------432}. 
+        *      It return an empty string when the specified ID is missing. 
+        */
+       public String getScoresFor( String id ) {
+               return scores.containsKey(id) ? scores.get(id).toString() : "";
+       }
+       
+       /**
+        * @return The list of score string as a {@link List} object, in the same ordeer of the insertion i.e. in the MSA
+        */
+       public List<String> getScoresList() {
+               List<String> result = new ArrayList<String>( scores.size() );
+               for( Map.Entry<String,StringBuilder> it : scores.entrySet() ) {
+                       result.add(it.getValue().toString());
+               }
+               
+               return result;
+       }
+       
+       /**
+        * @return The parsed score values a matrix of bytes
+        */
+       public byte[][] getScoresArray() { 
+               byte[][] result = new byte[ scores.size() ][];
+               
+               int rowCount = 0;
+               for( Map.Entry<String,StringBuilder> it : scores.entrySet() ) {
+                       String line = it.getValue().toString();
+                       byte[] seqValues = new byte[ line.length() ];
+                       for( int j=0, c=line.length(); j<c; j++ ) {
+                               
+                               byte val = (byte)(line.charAt(j) - '0');
+
+                               seqValues[j] = ( val >= 0 && val <= 9 ) ? val : -1; 
+                       }
+
+                       result[rowCount++] = seqValues;
+               }
+               
+               return result;
+       }
+       
+
+       private void doParsing(BufferedReader in) throws IOException {
+
+               /*
+                * read the header
+                */
+               header = readHeader(in);
+
+               if( header == null ) { return; }
+               
+       
+               /*
+                * initilize the structure
+                */
+               for( Map.Entry<String,Integer> entry : header.scores.entrySet() ) {
+                       scores.put( entry.getKey(), new StringBuilder());
+               }
+               
+               /*
+                * go with the reading
+                */
+               Block block;
+               while( (block = readBlock(in, header.scores.size())) != null  ) {
+                       
+                       /*
+                        * append sequences read in the block
+                        */
+                       for( Map.Entry<String,String> entry : block.items.entrySet() ) {
+                               StringBuilder scoreStringBuilder = scores.get(entry.getKey());
+                               if( scoreStringBuilder == null ) {
+                                       throw new RuntimeException(String.format("Invalid T-Coffee score file. Sequence ID '%s' is not declared in header section", entry.getKey()));
+                               }
+                               
+                               scoreStringBuilder.append( entry.getValue() );
+                       }
+                       
+               }
+               
+       }
+
+
+       static int parseInt( String str ) {
+               try {
+                       return Integer.parseInt(str);
+               }
+               catch( NumberFormatException e ) {
+                       // TODO report a warning ?
+                       return 0;
+               }               
+       }
+       
+       /**
+        * Reaad the header section in the T-Coffee score file format 
+        * 
+        * @param reader The scores reader 
+        * @return The parser {@link Header} instance 
+        * @throws RuntimeException when the header is not in the expected format
+        */
+       static Header readHeader(BufferedReader reader) {
+               
+               Header result = null;
+               try {
+                       result = new Header();
+                       result.head = reader.readLine();
+                       
+                       String line;
+
+                       while( (line = reader.readLine()) != null ) {
+                               if( line.startsWith("SCORE=")) {
+                                       result.score = parseInt( line.substring(6).trim() );
+                                       break;
+                               }
+                       }
+
+                       if( (line=reader.readLine())==null || !"*".equals(line.trim())) return null;
+                       if( (line=reader.readLine())==null || !"BAD AVG GOOD".equals(line.trim())) return null;
+                       if( (line=reader.readLine())==null || !"*".equals(line.trim())) return null;
+                       
+                       /*
+                        * now are expected a list if sequences ID up to the first blank line
+                        */
+                       while( (line=reader.readLine()) != null ) {
+                               if( "".equals(line) ) {
+                                       break;
+                               }
+                               
+                               int p = line.indexOf(":");
+                               if( p == -1 ) {
+                                       // TODO report a warning
+                                       continue;
+                               }
+                               
+                               String id = line.substring(0,p).trim();
+                               int val = parseInt(line.substring(p+1).trim());
+                               if( "".equals(id) ) {
+                                       // TODO report warning
+                                       continue;
+                               }
+                               
+                               result.scores.put(id,val);
+                       }
+                       
+               }
+               catch( IOException e ) {
+                       throw new RuntimeException("Cannot parse T-Coffee score ascii file", e);
+               }
+               
+               return result;
+       } 
+       
+       /**
+        * Read a scores block ihe provided stream. 
+        * 
+        * @param reader The stream to parse
+        * @param size The expected number of the sequence to be read 
+        * @return The {@link Block} instance read or {link null} null if the end of file has reached.
+        * @throws IOException Something went wrong on the 'wire' 
+        */
+       static Block readBlock( BufferedReader reader, int size ) throws IOException {
+               Block result = new Block(size);
+               String line;
+               
+               /*
+                * read blank lines (eventually)
+                */
+               while( (line=reader.readLine()) != null && "".equals(line.trim())) {
+                       // consume blank lines 
+               }
+               
+               if( line == null ) return null;
+               
+               /*
+                * read the scores block
+                */
+               do {
+                       if( "".equals(line.trim()) ) {
+                               // terminated
+                               break;
+                       }
+                       
+                       // split the line on the first blank 
+                       // the first part have to contain the sequence id
+                       // theramining part are the scores values
+                       int p = line.indexOf(" ");
+                       if( p == -1 ) {
+                               //TODO This is an unexpected condition, log a warning or throw an exception ? 
+                               continue;
+                       } 
+                       
+                       String id = line.substring(0,p).trim();
+                       String val = line.substring(p+1).trim();
+                       
+                       result.items.put(id, val);
+                       
+               } while( (line = reader.readLine()) != null ); 
+               
+
+               return result;
+       }
+
+       /*
+        * The score file header 
+        */
+       static class Header {
+               String head;
+               int score;
+
+               LinkedHashMap<String,Integer> scores = new LinkedHashMap<String,Integer>();
+               
+               public int getScoreAvg() { return score; }
+               
+               public int getScoreFor( String ID ) { 
+
+                       return scores.containsKey(ID) ? scores.get(ID) : -1;
+       
+               }
+       }
+       
+       /*
+        * Hold a single block values block in the score file
+        */
+       static class Block {
+               int size;
+               Map<String,String> items;
+               
+               public Block( int size ) {
+                       this.size = size;
+                       this.items = new HashMap<String,String>(size);
+               } 
+       
+               String getScoresFor( String id ) {
+                       return items.get(id);
+               }
+               
+               String getConsensus() {
+                       return items.get("cons");
+               }
+       }
+       
+       
+
+}