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1
21
22 package org.armedbear.j;
23
24 import java.awt.event.KeyEvent  ;
25 import java.io.IOException ;
26 import java.io.InputStream ;
27
28 public final class WordMode extends AbstractMode implements Constants, Mode
29 {
30 private static final WordMode mode = new WordMode();
31
32 private WordMode()
33 {
34 super(WORD_MODE, WORD_MODE_NAME);
35 setProperty(Property.VERTICAL_RULE, 0);
36 setProperty(Property.SHOW_LINE_NUMBERS, false);
37 }
38
39 public static final WordMode getMode()
40 {
41 return mode;
42 }
43
44 public final Formatter getFormatter(Buffer buffer)
45 {
46 return new PlainTextFormatter(buffer);
47 }
48
49 protected void setKeyMapDefaults(KeyMap km)
50 {
51 km.mapKey(KeyEvent.VK_B, CTRL_MASK | ALT_MASK, "binaryMode");
52 }
53
54 public void loadFile(Buffer buffer, File toBeLoaded)
55 {
56 try {
57 load(buffer, toBeLoaded.getInputStream());
58 }
59 catch (IOException e) {
60 Log.debug(e);
61 }
62 }
63
64 private static void load(Buffer buffer, InputStream inputStream)
65 {
66 byte[] bytes = new byte[4096];
67 int totalBytes = 0;
68 try {
69 int bytesRead = inputStream.read(bytes);
70 if (bytesRead < 0x400)
71 return;
72 int magic = getWord(bytes, 0x200);
73 Log.debug("magic = 0x" + Integer.toHexString(magic));
74 if (magic != 0xa5ec)
75 return;
76 int version = getWord(bytes, 0x202);
77 Log.debug("version = " + version);
78 if (version < 101)
79 return;
80 int status = getWord(bytes, 0x20a);
81 Log.debug("status = 0x" + Integer.toHexString(status));
82 if ((status & 4) != 0)
83 Log.debug("document is fast saved");
84 long beginText = getLong(bytes, 0x218) + 0x200;
85 Log.debug("beginText = 0x" + Long.toHexString(beginText));
86 if (beginText > bytesRead)
87 return; long endText = getLong(bytes, 0x21c) + 0x200;
89 long textLength = endText - beginText;
90 Log.debug("textLength = " + textLength);
91 final String encoding = "Cp1252";
92 ByteBuffer bb = new ByteBuffer(256);
93 boolean done = false;
94 Debug.assertTrue(beginText < Integer.MAX_VALUE);
95 int start = (int) beginText;
96 while (bytesRead > 0) {
97 for (int i = start; i < bytesRead; i++) {
98 byte b = bytes[i];
99 switch (b) {
100 case 13:
101 if (bb.length() > 0)
102 wrapAndAppend(buffer, new String (bb.getBytes(), 0, bb.length(), encoding));
103 buffer.appendLine("");
104 bb.setLength(0);
105 break;
106 case 0:
107 if (bb.length() > 0)
108 wrapAndAppend(buffer, new String (bb.getBytes(), 0, bb.length(), encoding));
109 bb.setLength(0);
110 done = true;
111 break;
112 default:
113 bb.append(b);
115 break;
116 }
117 if (done)
118 break;
119 }
120 if (done)
121 break;
122 bytesRead = inputStream.read(bytes);
123 start = 0;
124 if (bytesRead > 0)
125 buffer.loadProgress(totalBytes = totalBytes + bytesRead);
126 }
127 buffer.unmodified();
128 buffer.setLoaded(true);
129 buffer.setForceReadOnly(true);
130 }
131 catch (Exception e) {
132 Log.error(e);
133 }
134 buffer.loadFinished(buffer.isLoaded());
135 }
136
137 private static final void wrapAndAppend(Buffer buffer, String s)
138 {
139 buffer.append(Utilities.wrap(s, 65, 8));
140 }
141
142 private static long getLong(byte[] bytes, int offset)
144 {
145 long byte0 = bytes[offset] & 0xff;
146 long byte1 = bytes[offset + 1] & 0xff;
147 long byte2 = bytes[offset + 2] & 0xff;
148 long byte3 = bytes[offset + 3] & 0xff;
149 return (byte3 << 24) + (byte2 << 16) + (byte1 << 8) + byte0;
150 }
151
152 private static int getWord(byte[] bytes, int offset)
154 {
155 int hi = bytes[offset + 1] & 0xff;
156 int lo = bytes[offset] & 0xff;
157 return (hi << 8) + lo;
158 }
159 }
160 |
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