Add experimental extract of Applesoft BASIC files

This commit is contained in:
Terence Boldt 2021-06-29 07:29:48 -04:00
parent 057cd5fd7b
commit 00f8308c75
2 changed files with 163 additions and 1 deletions

View File

@ -4,6 +4,7 @@ import (
"flag"
"fmt"
"os"
"strings"
"github.com/tjboldt/ProDOS-Utilities/prodos"
)
@ -68,7 +69,11 @@ func main() {
if err != nil {
os.Exit(1)
}
if strings.HasSuffix(strings.ToLower(outFileName), ".bas") {
fmt.Fprintf(outFile, prodos.ConvertBasicToText(getFile))
} else {
outFile.Write(getFile)
}
case "put":
file, err := os.OpenFile(fileName, os.O_RDWR, 0755)
if err != nil {

157
prodos/basic.go Normal file
View File

@ -0,0 +1,157 @@
package prodos
import (
"fmt"
"strings"
)
func ConvertBasicToText(basic []byte) string {
var builder strings.Builder
i := 0
for {
lo := basic[i]
i++
hi := basic[i]
i++
if lo == 0 && hi == 0 {
builder.WriteString("\n")
return builder.String()
}
line := int(basic[i]) + int(basic[i+1])*256
i += 2
fmt.Fprintf(&builder, "\n %d ", line)
for {
t := basic[i]
if t == 0 {
i++
break
}
if t > 127 {
builder.WriteString(getToken(t))
} else {
builder.WriteString(string(t))
}
i++
}
}
}
func getToken(token byte) string {
tokens := map[byte]string{
0x80: "END ",
0x81: "FOR ",
0x82: "NEXT ",
0x83: "DATA ",
0x84: "INPUT ",
0x85: "DEL ",
0x86: "DIM ",
0x87: "READ ",
0x88: "GR ",
0x89: "TEXT ",
0x8A: "PR # ",
0x8B: "IN # ",
0x8C: "CALL ",
0x8D: "PLOT ",
0x8E: "HLIN ",
0x8F: "VLIN ",
0x90: "HGR2 ",
0x91: "HGR ",
0x92: "HCOLOR = ",
0x93: "HPLOT ",
0x94: "DRAW ",
0x95: "XDRAW ",
0x96: "HTAB ",
0x97: "HOME ",
0x98: "ROT = ",
0x99: "SCALE = ",
0x9A: "SHLOAD ",
0x9B: "TRACE ",
0x9C: "NOTRACE ",
0x9D: "NORMAL ",
0x9E: "INVERSE ",
0x9F: "FLASH ",
0xA0: "COLOR = ",
0xA1: "POP ",
0xA2: "VTAB ",
0xA3: "HIMEM: ",
0xA4: "LOMEM: ",
0xA5: "ONERR ",
0xA6: "RESUME ",
0xA7: "RECALL ",
0xA8: "STORE ",
0xA9: "SPEED = ",
0xAA: "LET ",
0xAB: "GOTO ",
0xAC: "RUN ",
0xAD: "IF ",
0xAE: "RESTORE ",
0xAF: "& ",
0xB0: "GOSUB ",
0xB1: "RETURN ",
0xB2: "REM",
0xB3: "STOP ",
0xB4: "ON ",
0xB5: "WAIT ",
0xB6: "LOAD ",
0xB7: "SAVE ",
0xB8: "DEF FN ",
0xB9: "POKE ",
0xBA: "PRINT ",
0xBB: "CONT ",
0xBC: "LIST ",
0xBD: "CLEAR ",
0xBE: "GET ",
0xBF: "NEW ",
0xC0: "TAB ",
0xC1: "TO ",
0xC2: "FN ",
0xC3: "SPC( ",
0xC4: " THEN ",
0xC5: "AT ",
0xC6: "NOT ",
0xC7: "STEP ",
0xC8: " + ",
0xC9: " - ",
0xCA: " * ",
0xCB: " / ",
0xCC: " ; ",
0xCD: "AND ",
0xCE: "OR ",
0xCF: " > ",
0xD0: " = ",
0xD1: " < ",
0xD2: "SGN ",
0xD3: "INT ",
0xD4: "ABS ",
0xD5: "USR ",
0xD6: "FRE ",
0xD7: "SCRN (",
0xD8: "PDL ",
0xD9: "POS ",
0xDA: "SQR ",
0xDB: "RND ",
0xDC: "LOG ",
0xDD: "EXP ",
0xDE: "COS ",
0xDF: "SIN ",
0xE0: "TAN ",
0xE1: "ATN ",
0xE2: "PEEK ",
0xE3: "LEN ",
0xE4: "STR$ ",
0xE5: "VAL ",
0xE6: "ASC ",
0xE7: "CHR$ ",
0xE8: "LEFT$ ",
0xE9: "RIGHT$ ",
0xEA: "MID$ ",
}
return tokens[token]
}