mirror of
https://github.com/dmolony/DiskBrowser.git
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154 lines
5.9 KiB
Java
154 lines
5.9 KiB
Java
package com.bytezone.diskbrowser.prodos.write;
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import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
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import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRY_SIZE;
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import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.UNDERLINE;
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import static com.bytezone.diskbrowser.utilities.Utility.getAppleDate;
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import static com.bytezone.diskbrowser.utilities.Utility.putAppleDate;
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import static com.bytezone.diskbrowser.utilities.Utility.readShort;
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import static com.bytezone.diskbrowser.utilities.Utility.readTriple;
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import static com.bytezone.diskbrowser.utilities.Utility.writeShort;
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import static com.bytezone.diskbrowser.utilities.Utility.writeTriple;
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import java.time.LocalDateTime;
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// -----------------------------------------------------------------------------------//
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public class FileEntry
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// -----------------------------------------------------------------------------------//
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{
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private final ProdosDisk disk;
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private final byte[] buffer;
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private final int ptr;
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String fileName;
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byte storageType;
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LocalDateTime creationDate;
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LocalDateTime modifiedDate;
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byte fileType;
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int keyPointer;
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int blocksUsed;
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int eof;
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byte version = 0x00;
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byte minVersion = 0x00;
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byte access = (byte) 0xE3;
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int auxType;
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int headerPointer;
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// ---------------------------------------------------------------------------------//
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public FileEntry (ProdosDisk disk, int ptr)
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// ---------------------------------------------------------------------------------//
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{
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this.disk = disk;
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this.buffer = disk.getBuffer ();
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this.ptr = ptr;
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}
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// ---------------------------------------------------------------------------------//
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int getBlockNo ()
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// ---------------------------------------------------------------------------------//
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{
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return ptr / BLOCK_SIZE;
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}
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// ---------------------------------------------------------------------------------//
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int getEntryNo ()
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// ---------------------------------------------------------------------------------//
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{
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return (((ptr % BLOCK_SIZE) - 4) / ENTRY_SIZE + 1);
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}
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// ---------------------------------------------------------------------------------//
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void read ()
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// ---------------------------------------------------------------------------------//
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{
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storageType = (byte) ((buffer[ptr] & 0xF0) >>> 4);
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int nameLength = buffer[ptr] & 0x0F;
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if (nameLength > 0)
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fileName = new String (buffer, ptr + 1, nameLength);
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else
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fileName = "";
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fileType = buffer[ptr + 0x10];
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keyPointer = readShort (buffer, ptr + 0x11);
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blocksUsed = readShort (buffer, ptr + 0x13);
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eof = readTriple (buffer, ptr + 0x15);
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creationDate = getAppleDate (buffer, ptr + 0x18);
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version = buffer[ptr + 0x1C];
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minVersion = buffer[ptr + 0x1D];
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access = buffer[ptr + 0x1E];
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auxType = readShort (buffer, ptr + 0x1F);
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modifiedDate = getAppleDate (buffer, ptr + 0x21);
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headerPointer = readShort (buffer, ptr + 0x25);
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}
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// ---------------------------------------------------------------------------------//
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void write ()
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// ---------------------------------------------------------------------------------//
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{
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buffer[ptr] = (byte) ((storageType << 4) | fileName.length ());
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System.arraycopy (fileName.getBytes (), 0, buffer, ptr + 1, fileName.length ());
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buffer[ptr + 0x10] = fileType;
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writeShort (buffer, ptr + 0x11, keyPointer);
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writeShort (buffer, ptr + 0x13, blocksUsed);
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writeTriple (buffer, ptr + 0x15, eof);
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putAppleDate (buffer, ptr + 0x18, creationDate);
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buffer[ptr + 0x1C] = version;
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buffer[ptr + 0x1D] = minVersion;
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buffer[ptr + 0x1E] = access;
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writeShort (buffer, ptr + 0x1F, auxType);
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putAppleDate (buffer, ptr + 0x21, modifiedDate);
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writeShort (buffer, ptr + 0x25, headerPointer);
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}
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// ---------------------------------------------------------------------------------//
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String toText ()
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// ---------------------------------------------------------------------------------//
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{
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int block = ptr / BLOCK_SIZE;
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int entry = ((ptr % BLOCK_SIZE) - 4) / 39 + 1;
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return String.format ("%04X:%02X %-15s %02X %04X %02X %04X %04X", block, entry,
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fileName, storageType, blocksUsed, fileType, keyPointer, headerPointer);
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}
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// ---------------------------------------------------------------------------------//
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@Override
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public String toString ()
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// ---------------------------------------------------------------------------------//
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{
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StringBuilder text = new StringBuilder ();
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text.append (UNDERLINE);
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text.append ("File Entry\n");
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text.append (UNDERLINE);
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int blockNo = ptr / BLOCK_SIZE;
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text.append (String.format ("Block ............ %04X%n", blockNo));
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text.append (
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String.format ("Entry ............ %02X%n", ((ptr % BLOCK_SIZE) - 4) / 39 + 1));
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text.append (String.format ("Storage type ..... %02X %s%n", storageType,
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ProdosDisk.storageTypes[storageType]));
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text.append (String.format ("Name length ...... %02X%n", fileName.length ()));
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text.append (String.format ("File name ........ %s%n", fileName));
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text.append (String.format ("File type ........ %02X%n", fileType));
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text.append (String.format ("Key pointer ...... %04X%n", keyPointer));
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text.append (String.format ("Blocks used ...... %d%n", blocksUsed));
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text.append (String.format ("EOF .............. %d%n", eof));
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text.append (String.format ("Created .......... %s%n", creationDate));
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text.append (String.format ("Version .......... %02X%n", version));
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text.append (String.format ("Min version ...... %02X%n", minVersion));
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text.append (String.format ("Access ........... %02X%n", access));
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text.append (String.format ("Aux .............. %d%n", auxType));
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text.append (String.format ("Modified ......... %s%n", modifiedDate));
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text.append (String.format ("Header ptr ....... %04X%n", headerPointer));
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text.append (UNDERLINE);
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return text.toString ();
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}
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}
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