113 lines
3.5 KiB
Java
113 lines
3.5 KiB
Java
package com.bytezone.diskbrowser.applefile;
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// -----------------------------------------------------------------------------------//
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public class MerlinSource extends AbstractFile
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// -----------------------------------------------------------------------------------//
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{
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int ptr;
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private static int[] tabs = { 12, 19, 35 };
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private static int TAB_POS = tabs[2];
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private final int recordLength;
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private final int eof;
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private boolean prodosFile;
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// Source : Prodos text file
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// ---------------------------------------------------------------------------------//
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public MerlinSource (String name, byte[] buffer, int recordLength, int eof)
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// ---------------------------------------------------------------------------------//
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{
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super (name, buffer);
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this.eof = eof;
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this.recordLength = recordLength;
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prodosFile = true;
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}
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// Source : Dos binary file
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// ---------------------------------------------------------------------------------//
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public MerlinSource (String name, byte[] buffer, int loadAddress)
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// ---------------------------------------------------------------------------------//
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{
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super (name, buffer);
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this.eof = 0;
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this.recordLength = 0;
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this.loadAddress = loadAddress;
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}
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// ---------------------------------------------------------------------------------//
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@Override
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public String getText ()
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// ---------------------------------------------------------------------------------//
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{
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StringBuilder text = new StringBuilder ();
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text.append ("Merlin source : " + name + "\n");
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if (prodosFile)
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{
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text.append (String.format ("Record length : %,8d%n", recordLength));
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text.append (String.format ("EOF (aux) : %,8d%n", eof));
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}
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else
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{
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text.append (String.format ("Buffer size : %04X %<,8d%n", buffer.length));
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text.append (String.format ("Load address : %04X %<,8d%n", loadAddress));
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}
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text.append ("\n");
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ptr = 0;
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while (ptr < buffer.length && buffer[ptr] != 0)
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text.append (getLine () + "\n");
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if (text.length () > 0)
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text.deleteCharAt (text.length () - 1);
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return text.toString ();
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}
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// ---------------------------------------------------------------------------------//
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private String getLine ()
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// ---------------------------------------------------------------------------------//
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{
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StringBuilder line = new StringBuilder ();
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boolean comment = false;
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boolean string = false;
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while (ptr < buffer.length)
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{
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int val = buffer[ptr++] & 0x7F;
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if (val == 0x0D)
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break;
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if (val == '*' && line.length () == 0)
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comment = true;
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if (val == '"')
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string = !string;
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if (val == ';' && !comment)
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{
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comment = true;
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while (line.length () < TAB_POS)
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line.append (' ');
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}
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if (val == ' ' && !comment && !string)
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{
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line = tab (line);
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if (line.length () >= tabs[2])
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comment = true;
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}
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else
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line.append ((char) val);
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}
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return line.toString ();
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}
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// ---------------------------------------------------------------------------------//
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private StringBuilder tab (StringBuilder text)
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// ---------------------------------------------------------------------------------//
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{
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int nextTab = 0;
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for (int tab : tabs)
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if (text.length () < tab)
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{
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nextTab = tab;
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break;
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}
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while (text.length () < nextTab)
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text.append (' ');
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return text;
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}
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} |