svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.file / org.gvsig.fmap.dal.file.csv / src / main / java / org / gvsig / fmap / dal / store / csv / simplereaders / FixedLenReader.java @ 42775
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package org.gvsig.fmap.dal.store.csv.simplereaders; |
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import java.io.BufferedReader; |
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import java.io.FileReader; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.List; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.fmap.dal.store.csv.CSVStoreParameters; |
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public class FixedLenReader implements SimpleReader { |
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BufferedReader reader = null; |
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CSVStoreParameters.FieldDefinition fieldsDefinition[] = null; |
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List fields = null; |
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private final int fieldCount; |
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// private final CSVStoreParameters parameters;
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private final String commentStartMarker; |
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private int currentLine =1; |
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public FixedLenReader(FileReader reader, CSVStoreParameters parameters) { |
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// this.parameters = parameters;
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this.reader = new BufferedReader(reader); |
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this.fieldsDefinition = CSVStoreParameters.getFieldsDefinition(parameters);
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this.fieldCount = this.fieldsDefinition.length; |
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this.fields = new ArrayList(this.fieldCount); |
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for( int i=0; i<this.fieldCount; i++ ) { |
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this.fields.add(null); |
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} |
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this.commentStartMarker = CSVStoreParameters.getCommentStartMarker(parameters);
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} |
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public String[] getHeader() throws IOException { |
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String[] header = new String[this.fieldCount]; |
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for( int i=0; i<this.fieldCount; i++ ) { |
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header[i] = Character.toString((char) (i+'A')).toUpperCase(); |
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} |
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return header;
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} |
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@Override
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public int getColumnsCount() throws IOException { |
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return this.fieldCount; |
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} |
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public List<String> read() throws IOException { |
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String line = this.reader.readLine(); |
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this.currentLine++;
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while( !StringUtils.isEmpty(line) && !StringUtils.isEmpty(this.commentStartMarker) && line.startsWith(this.commentStartMarker) ) { |
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line = this.reader.readLine();
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this.currentLine++;
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} |
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return this.parse(line); |
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} |
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public List<String> parse(String line) throws IOException { |
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if( line == null ) { |
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return null; |
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} |
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for ( int i = 0; i < this.fieldCount; i++ ) { |
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CSVStoreParameters.FieldDefinition fieldDefinition = this.fieldsDefinition[i];
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String value = null; |
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try {
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if ( fieldDefinition.getToEndOfLine() ) {
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value = line.substring(fieldDefinition.getStart()); |
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} else {
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value = line.substring( |
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fieldDefinition.getStart(), |
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fieldDefinition.getEnd() |
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); |
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} |
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} catch(Exception ex) { |
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// Ignore errors
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// Probablemente por que las lineas no tienen tantos caracteres como
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// se han indicado en la definicion.
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} |
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this.fields.set(i, value);
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} |
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return this.fields; |
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} |
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public void close() throws IOException { |
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this.reader.close();
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this.reader = null; |
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} |
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public List<String> skip(int lines) throws IOException { |
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String line = null; |
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for ( int i = 0; i < lines; i++ ) { |
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line = this.reader.readLine();
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this.currentLine++;
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while( line!=null && this.commentStartMarker!=null && line.startsWith(this.commentStartMarker) ) { |
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line = this.reader.readLine();
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this.currentLine++;
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} |
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} |
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return this.parse(line); |
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} |
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public int getLine() { |
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return this.currentLine; |
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} |
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} |