mirror of
https://github.com/tjboldt/ProDOS-Utilities.git
synced 2024-11-24 16:31:28 +00:00
163 lines
2.4 KiB
Go
163 lines
2.4 KiB
Go
// Copyright Terence J. Boldt (c)2021-2022
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// Use of this source code is governed by an MIT
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// license that can be found in the LICENSE file.
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// This file provides conversion between BASIC and text
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package prodos
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import (
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"fmt"
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"strings"
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)
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var tokens = map[byte]string{
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0x80: "END",
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0x81: "FOR",
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0x82: "NEXT",
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0x83: "DATA",
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0x84: "INPUT",
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0x85: "DEL",
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0x86: "DIM",
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0x87: "READ",
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0x88: "GR",
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0x89: "TEXT",
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0x8A: "PR#",
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0x8B: "IN#",
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0x8C: "CALL",
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0x8D: "PLOT",
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0x8E: "HLIN",
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0x8F: "VLIN",
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0x90: "HGR2",
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0x91: "HGR",
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0x92: "HCOLOR=",
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0x93: "HPLOT",
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0x94: "DRAW",
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0x95: "XDRAW",
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0x96: "HTAB",
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0x97: "HOME",
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0x98: "ROT=",
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0x99: "SCALE=",
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0x9A: "SHLOAD",
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0x9B: "TRACE",
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0x9C: "NOTRACE",
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0x9D: "NORMAL",
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0x9E: "INVERSE",
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0x9F: "FLASH",
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0xA0: "COLOR=",
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0xA1: "POP",
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0xA2: "VTAB",
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0xA3: "HIMEM:",
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0xA4: "LOMEM:",
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0xA5: "ONERR",
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0xA6: "RESUME",
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0xA7: "RECALL",
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0xA8: "STORE",
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0xA9: "SPEED=",
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0xAA: "LET",
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0xAB: "GOTO",
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0xAC: "RUN",
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0xAD: "IF",
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0xAE: "RESTORE",
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0xAF: "&",
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0xB0: "GOSUB",
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0xB1: "RETURN",
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0xB2: "REM",
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0xB3: "STOP",
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0xB4: "ON",
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0xB5: "WAIT",
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0xB6: "LOAD",
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0xB7: "SAVE",
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0xB8: "DEF FN",
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0xB9: "POKE",
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0xBA: "PRINT",
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0xBB: "CONT",
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0xBC: "LIST",
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0xBD: "CLEAR",
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0xBE: "GET",
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0xBF: "NEW",
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0xC0: "TAB",
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0xC1: "TO",
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0xC2: "FN",
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0xC3: "SPC(",
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0xC4: "THEN",
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0xC5: "AT",
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0xC6: "NOT",
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0xC7: "STEP",
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0xC8: "+",
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0xC9: "-",
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0xCA: "*",
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0xCB: "/",
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0xCC: ";",
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0xCD: "AND",
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0xCE: "OR",
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0xCF: ">",
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0xD0: "=",
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0xD1: "<",
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0xD2: "SGN",
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0xD3: "INT",
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0xD4: "ABS",
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0xD5: "USR",
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0xD6: "FRE",
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0xD7: "SCRN(",
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0xD8: "PDL",
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0xD9: "POS",
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0xDA: "SQR",
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0xDB: "RND",
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0xDC: "LOG",
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0xDD: "EXP",
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0xDE: "COS",
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0xDF: "SIN",
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0xE0: "TAN",
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0xE1: "ATN",
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0xE2: "PEEK",
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0xE3: "LEN",
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0xE4: "STR$",
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0xE5: "VAL",
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0xE6: "ASC",
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0xE7: "CHR$",
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0xE8: "LEFT$",
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0xE9: "RIGHT$",
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0xEA: "MID$",
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}
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// ConvertBasicToText converts AppleSoft BASIC to text
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func ConvertBasicToText(basic []byte) string {
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var builder strings.Builder
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i := 0
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for {
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lo := basic[i]
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i++
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hi := basic[i]
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i++
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if lo == 0 && hi == 0 {
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return builder.String()
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}
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line := int(basic[i]) + int(basic[i+1])*256
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i += 2
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fmt.Fprintf(&builder, "%d ", line)
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for {
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t := basic[i]
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if t == 0 {
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builder.WriteString("\n")
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i++
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break
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}
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if t > 127 {
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builder.WriteString(" ")
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builder.WriteString(tokens[t])
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builder.WriteString(" ")
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} else {
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builder.WriteString(string(t))
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}
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i++
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}
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}
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}
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