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comparison src/org/tmatesoft/hg/internal/FilterDataAccess.java @ 158:b413b16d10a5

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Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 09 Mar 2011 13:16:37 +0100
parents d5268ca7715b
children facfd8518367
comparison
equal deleted inserted replaced
157:d5268ca7715b 158:b413b16d10a5
26 * @author Artem Tikhomirov 26 * @author Artem Tikhomirov
27 * @author TMate Software Ltd. 27 * @author TMate Software Ltd.
28 */ 28 */
29 public class FilterDataAccess extends DataAccess { 29 public class FilterDataAccess extends DataAccess {
30 private final DataAccess dataAccess; 30 private final DataAccess dataAccess;
31 private final long offset; 31 private final int offset;
32 private final int length; 32 private final int length;
33 private int count; 33 private int count;
34 34
35 public FilterDataAccess(DataAccess dataAccess, long offset, int length) { 35 public FilterDataAccess(DataAccess dataAccess, int offset, int length) {
36 this.dataAccess = dataAccess; 36 this.dataAccess = dataAccess;
37 this.offset = offset; 37 this.offset = offset;
38 this.length = length; 38 this.length = length;
39 count = length; 39 count = length;
40 } 40 }
53 public boolean isEmpty() { 53 public boolean isEmpty() {
54 return count <= 0; 54 return count <= 0;
55 } 55 }
56 56
57 @Override 57 @Override
58 public long length() { 58 public int length() {
59 return length; 59 return length;
60 } 60 }
61 61
62 @Override 62 @Override
63 public void seek(long localOffset) throws IOException { 63 public void seek(int localOffset) throws IOException {
64 if (localOffset < 0 || localOffset > length) { 64 if (localOffset < 0 || localOffset > length) {
65 throw new IllegalArgumentException(); 65 throw new IllegalArgumentException();
66 } 66 }
67 dataAccess.seek(offset + localOffset); 67 dataAccess.seek(offset + localOffset);
68 count = (int) (length - localOffset); 68 count = (int) (length - localOffset);