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dmolony-DiskBrowser
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CPM fixes

This commit is contained in:
Denis Molony 2021-06-18 10:48:38 +10:00
parent 7d162a4baf
commit 5e053872a9
4 changed files with 61 additions and 14 deletions
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4
src/com/bytezone/diskbrowser/applefile/PascalText.java
View File

@ -26,6 +26,7 @@ public class PascalText extends TextFile
++ptr;
continue;
}
if (buffer[ptr] == 0x10)
{
int tab = buffer[ptr + 1] - 0x20;
@ -33,6 +34,7 @@ public class PascalText extends TextFile
text.append (" ");
ptr += 2;
}
String line = getLine (ptr);
text.append (line + "\n");
ptr += line.length () + 1;
@ -49,8 +51,10 @@ public class PascalText extends TextFile
// ---------------------------------------------------------------------------------//
{
StringBuilder line = new StringBuilder ();
while (buffer[ptr] != 0x0D)
line.append ((char) buffer[ptr++]);
return line.toString ();
}
}

10
src/com/bytezone/diskbrowser/cpm/CPMCatalogSector.java
View File

@ -50,8 +50,14 @@ class CPMCatalogSector extends AbstractSector
extra = "";
}
addText (text, buffer, i, 1, "User number");
addText (text, buffer, i + 1, 4, "File name : " + new String (buffer, i + 1, 8));
if (buffer[i] == (byte) 0xE5)
addText (text, buffer, i, 1, "Deleted file?");
else
addText (text, buffer, i, 1, "User number");
if (buffer[i + 1] == 0)
addText (text, buffer, i + 1, 4, "File name : ");
else
addText (text, buffer, i + 1, 4, "File name : " + new String (buffer, i + 1, 8));
addText (text, buffer, i + 5, 4, "");
addText (text, buffer, i + 9, 3, "File type : " + type + extra);
addText (text, buffer, i + 12, 1, "Extent counter LO");

55
src/com/bytezone/diskbrowser/cpm/CPMDisk.java
View File

@ -80,7 +80,7 @@ public class CPMDisk extends AbstractFormattedDisk
int b1 = buffer[0] & 0xFF;
int b2 = buffer[1] & 0xFF;
if (b1 == EMPTY_BYTE_VALUE && b2 == EMPTY_BYTE_VALUE)
if (b1 == EMPTY_BYTE_VALUE && (b2 == EMPTY_BYTE_VALUE || b2 == 0))
continue;
if (b1 > 31 && b1 != EMPTY_BYTE_VALUE)
@ -233,21 +233,54 @@ public class CPMDisk extends AbstractFormattedDisk
if (bufferContainsAll (buffer, (byte) EMPTY_BYTE_VALUE))
break;
int b1 = buffer[0] & 0xFF;
int b2 = buffer[1] & 0xFF;
if (b1 == EMPTY_BYTE_VALUE && (b2 == EMPTY_BYTE_VALUE || b2 == 0))
continue;
if (b1 > 31 && b1 != EMPTY_BYTE_VALUE)
break;
if (b2 < 32 || (b2 > 126 && b2 != EMPTY_BYTE_VALUE))
break;
for (int i = 0; i < buffer.length; i += 32)
{
int val = buffer[i] & 0xFF;
if (val == EMPTY_BYTE_VALUE)
break;
b1 = buffer[i] & 0xFF;
b2 = buffer[i + 1] & 0xFF;
if (val > 31)
if (b1 == EMPTY_BYTE_VALUE) // deleted file??
continue;
if (b2 < 32 || (b2 > 126 && b2 != EMPTY_BYTE_VALUE))
return false;
for (int j = 1; j <= 8; j++)
{
val = buffer[i + j] & 0xFF;
if (val < 32 || (val > 126 && val != EMPTY_BYTE_VALUE))
return false;
}
// int val = buffer[i] & 0xFF;
// if (val == EMPTY_BYTE_VALUE)
// {
// if (debug)
// System.out.println ("empty value found - deleted file?");
// break;
// }
// if (val > 31)
// {
// if (debug)
// System.out.println ("val > 31");
// return false;
// }
// for (int j = 1; j <= 8; j++)
// {
// val = buffer[i + j] & 0xFF;
// if (val < 32 || (val > 126 && val != EMPTY_BYTE_VALUE))
// {
// if (debug)
// System.out.println ("val < 32 || val > 126");
// return false;
// }
// }
}
}

6
src/com/bytezone/diskbrowser/cpm/DirectoryEntry.java
View File

@ -54,7 +54,10 @@ class DirectoryEntry implements AppleFileSource
type = new String (typeBuffer).trim ();
userNumber = buffer[offset] & 0xFF;
name = new String (buffer, offset + 1, 8).trim ();
if (userNumber == 0xE5 && buffer[offset + 1] == 0)
name = "";
else
name = new String (buffer, offset + 1, 8).trim ();
extent = buffer[offset + 12] & 0xFF;
s2 = buffer[offset + 13] & 0xFF;
s1 = buffer[offset + 14] & 0xFF;
@ -120,6 +123,7 @@ class DirectoryEntry implements AppleFileSource
for (DiskAddress sector : blocks)
if (sector.matches (da))
return true;
return false;
}