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dmolony-DiskBrowser
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tidying

This commit is contained in:
Denis Molony 2021-07-27 15:57:46 +10:00
parent c18cfe9ed7
commit f02c932d91
1 changed files with 59 additions and 85 deletions
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144
src/com/bytezone/diskbrowser/applefile/CPMBasicFile.java
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@ -9,22 +9,33 @@ public class CPMBasicFile extends TextFile
// -----------------------------------------------------------------------------------//
{
String[] tokens = { //
"", "END", "FOR", "NEXT", "DATA", "INPUT", "DIM", "READ", // 0x80
"LET", "GOTO", "RUN", "IF", "RESTORE", "GOSUB", "RETURN", "REM", // 0x88
"STOP", "PRINT", "CLEAR", "LIST", "NEW", "ON", "DEF", "POKE", // 0x90
"", "", "", "LPRINT", "LLIST", "WIDTH", "ELSE", "", // 0x98
"", "SWAP", "ERASE", "", "ERROR", "RESUME", "DELETE", "", // 0xA0
"RENUM", "DEFSTR", "DEFINT", "", "DEFDBL", "LINE", "", "WHILE", // 0xA8
"WEND", "CALL", "WRITE", "COMMON", "CHAIN", "OPTION", "RANDOMIZE", "SYSTEM", // 0xB0
"OPEN", "FIELD", "GET", "PUT", "CLOSE", "LOAD", "MERGE", "", // 0xB8
"NAME", "KILL", "LSET", "RSET", "SAVE", "RESET", "TEXT", "HOME", // 0xC0
"VTAB", "HTAB", "INVERSE", "NORMAL", "", "", "", "", // 0xC8
"", "", "", "", "", "WAIT", "", "", // 0xD0
"", "", "", "", "", "TO", "THEN", "TAB(", // 0xD8
"STEP", "USR", "FN", "SPC(", "", "ERL", "ERR", "STRING$", // 0xE0
"USING", "INSTR", "", "VARPTR", "", "", "INKEY$", ">", // 0xE8
"=", "<", "+", "-", "*", "/", "", "AND", // 0xF0
"OR", "", "", "", "MOD", "/", "", "", // 0xF8
"", "END", "FOR", "NEXT", "DATA", "INPUT", "DIM", "READ", // 0x80
"LET", "GOTO", "RUN", "IF", "RESTORE", "GOSUB", "RETURN", "REM", // 0x88
"STOP", "PRINT", "CLEAR", "LIST", "NEW", "ON", "DEF", "POKE", // 0x90
"", "", "", "LPRINT", "LLIST", "WIDTH", "ELSE", "", // 0x98
"", "SWAP", "ERASE", "", "ERROR", "RESUME", "DELETE", "", // 0xA0
"RENUM", "DEFSTR", "DEFINT", "", "DEFDBL", "LINE", "", "WHILE", // 0xA8
"WEND", "CALL", "WRITE", "COMMON", "CHAIN", // 0xB0
"OPTION", "RANDOMIZE", "SYSTEM", // 0xB5
"OPEN", "FIELD", "GET", "PUT", "CLOSE", "LOAD", "MERGE", "", // 0xB8
"NAME", "KILL", "LSET", "RSET", "SAVE", "RESET", "TEXT", "HOME", // 0xC0
"VTAB", "HTAB", "INVERSE", "NORMAL", "", "", "", "", // 0xC8
"", "", "", "", "", "WAIT", "", "", // 0xD0
"", "", "", "", "", "TO", "THEN", "TAB(", // 0xD8
"STEP", "USR", "FN", "SPC(", "", "ERL", "ERR", "STRING$", // 0xE0
"USING", "INSTR", "'", "VARPTR", "", "", "INKEY$", ">", // 0xE8
"=", "<", "+", "-", "*", "/", "", "AND", // 0xF0
"OR", "", "", "", "MOD", "/", "", "", // 0xF8
};
String[] functions = { //
"", "LEFT$", "RIGHT$", "MID$", "SGN", "INT", "ABS", "SQR", // 0x80
"RND", "SIN", "LOG", "EXP", "COS", "TAN", "ATN", "FRE", // 0x88
"POS", "LEN", "STR$", "VAL", "ASC", "CHR$", "PEEK", "SPACE$", // 0x90
"OCT$", "HEX$", "LPOS", "CINT", "CSNG", "CDBL", "FIX", "", // 0x98
"", "", "", "", "", "", "", "", // 0xA0
"", "", "CVI", "CVS", "CVD", "", "EOF", "LOC", // 0xA8
"", "MKI$", "MKS$", "MKD$", // 0xB0
};
// ---------------------------------------------------------------------------------//
@ -59,7 +70,6 @@ public class CPMBasicFile extends TextFile
break;
int lineNumber = getShort (buffer, ptr + 2);
// System.out.println (lineNumber);
text.append (String.format (" %d ", lineNumber));
ptr += 4;
@ -69,13 +79,41 @@ public class CPMBasicFile extends TextFile
{
int val = buffer[ptr++] & 0xFF;
if (val >= 0x20 && val <= 0x7E) // printable
if (val >= 0x80)
{
text.append (String.format ("%s", (char) val));
if (val == 0xFF)
{
int next = buffer[ptr++] & 0xFF;
String token = functions[next & 0x7F];
if (token.length () == 0)
token = String.format ("<FF %02X>", next);
text.append (token);
}
else
{
String token = tokens[val & 0x7F];
if (token.length () == 0)
token = String.format ("<%02X>", val);
text.append (token);
}
continue;
}
if (val >= 0x11 && val <= 0x1A)
if (val >= 0x20 && val <= 0x7E) // printable
{
// check for stupid apostrophe comment
if (val == 0x3A && ptr + 1 < buffer.length && buffer[ptr] == (byte) 0x8F
&& buffer[ptr + 1] == (byte) 0xEA)
{
text.append ("'");
ptr += 2;
}
else
text.append (String.format ("%s", (char) val));
continue;
}
if (val >= 0x11 && val <= 0x1A) // inline numbers
{
text.append (val - 0x11);
continue;
@ -128,55 +166,8 @@ public class CPMBasicFile extends TextFile
ptr += 8;
break;
case 0xFF:
int next = buffer[ptr++] & 0xFF;
String token = switch (next)
{
case 0x81 -> "LEFT$";
case 0x82 -> "RIGHT$";
case 0x83 -> "MID$";
case 0x84 -> "SGN";
case 0x85 -> "INT";
case 0x86 -> "ABS";
case 0x87 -> "SQR";
case 0x88 -> "RND";
case 0x89 -> "SIN";
case 0x8A -> "LOG";
case 0x8B -> "EXP";
case 0x8C -> "COS";
case 0x8D -> "TAN";
case 0x8E -> "ATN";
case 0x8F -> "FRE";
case 0x90 -> "POS";
case 0x91 -> "LEN";
case 0x92 -> "STR$";
case 0x93 -> "VAL";
case 0x94 -> "ASC";
case 0x95 -> "CHR$";
case 0x96 -> "PEEK";
case 0x97 -> "SPACE$";
case 0x98 -> "OCT$";
case 0x99 -> "HEX$";
case 0x9A -> "LPOS";
case 0x9B -> "CINT";
case 0x9C -> "CSNG";
case 0x9D -> "CDBL";
case 0x9E -> "FIX";
case 0xAA -> "CVI";
case 0xAB -> "CVS";
case 0xAC -> "CVD";
case 0xAE -> "EOF";
case 0xAF -> "LOC";
case 0xB1 -> "MKI$";
case 0xB2 -> "MKS$";
case 0xB3 -> "MKD$";
default -> String.format ("<FF %02X>", next);
};
text.append (token);
break;
default:
text.append (getToken (val));
text.append (String.format ("<%02X>", val));
}
}
@ -189,21 +180,4 @@ public class CPMBasicFile extends TextFile
return text.toString ();
}
// ---------------------------------------------------------------------------------//
private String getToken (int val)
// ---------------------------------------------------------------------------------//
{
if (val < 0x80)
return String.format ("<****%02X*****>", val);
String token = tokens[val - 0x80];
if (token.length () == 0)
{
token = String.format ("<%02X>", val);
// System.out.println (token);
}
return token;
}
}