feat: Added support for Integer data type fields.

README.md

@@ -33,6 +33,7 @@ date (D) | `java.util.Date`
 float (F) | `java.lang.Float`
 logical (L) | `java.lang.Boolean`
 numeric (N) | `java.lang.Number`
+integer (I) | `java.lang.Integer`
 
 ### How to use
 

dbf-reader/src/main/java/org/jamel/dbf/DbfReader.java

@@ -1,14 +1,22 @@
 package org.jamel.dbf;
 
+import java.io.BufferedInputStream;
+import java.io.Closeable;
+import java.io.DataInput;
+import java.io.DataInputStream;
+import java.io.EOFException;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.util.Date;
+import java.util.GregorianCalendar;
+
 import org.jamel.dbf.exception.DbfException;
 import org.jamel.dbf.structure.DbfField;
 import org.jamel.dbf.structure.DbfHeader;
 import org.jamel.dbf.utils.DbfUtils;
 
-import java.io.*;
-import java.util.Date;
-import java.util.GregorianCalendar;
-
 /**
  * Dbf reader.
  * This class is not thread safe.
@@ -121,6 +129,7 @@ private Object readFieldValue(DbfField field) throws IOException {
             case FLOAT: return readFloatValue(field, buf);
             case LOGICAL: return readLogicalValue(field, buf);
             case NUMERIC: return readNumericValue(field, buf);
+            case INTEGER: return readIntegerValue(field, buf);
             default:  return null;
         }
     }
@@ -161,6 +170,16 @@ protected Number readNumericValue(DbfField field, byte[] buf) throws IOException
         }
     }
 
+    protected Integer readIntegerValue(DbfField field, byte[] buf) throws IOException {
+        try {
+        	if (buf.length != 4) throw new DbfException("Failed to parse Integer from " + field.getName());
+        	int x = java.nio.ByteBuffer.wrap(buf).order(java.nio.ByteOrder.LITTLE_ENDIAN).getInt();
+            return x;
+        } catch (NumberFormatException e) {
+            throw new DbfException("Failed to parse Integer from " + field.getName(), e);
+        }
+    }
+
     /**
      * @return the number of records in the Dbf.
      */

dbf-reader/src/main/java/org/jamel/dbf/structure/DbfDataType.java

@@ -9,7 +9,8 @@ public enum DbfDataType {
     DATE('D'),
     FLOAT('F'),
     LOGICAL('L'),
-    NUMERIC('N');
+    NUMERIC('N'),
+    INTEGER('I');
 
     public final byte byteValue;