This code is inspired by the .txt2bas dot command on the ZX Spectrum Next (not that I could read the asm code!).
This project provides:
txt2bas command line toolbas2txt command line toolNode and npm (included with node) are required to install and run the code.
For the command line tooling - this installs both tools:
npm install --global txt2basCommand line arguments are the same for both txt2bas and bas2txt:
txt2bas -i source.txt -o result.bas # generate a 3dos basic file
bas2txt -i source.bas -o result.txt # generates plain textOmitting -o will print to stdout.
By default the generated file is a +3DOS format unless the output or input filename ends in .tap or using the format option -f tap:
txt2bas -i source.txt -o result.tap # generates a tap fileThe command line can also read from stdin though this works best on txt2bas and not recommended for bas2txt.
Note that #autostart directive is also supported.
-i FILENAME - input filename-o FILENAME - output filename-t - (txt2bas only) test and validate the NextBASIC source-C - (txt2bas only) strip comments (to reduce final size)-bank - (txt2bas only) generate a BANK loadable result-A #n - (txt2bas only) set autostart line to #n-f 3dos|tap - set the output format-H- omit the file header (either in output or in parsing input)-udg - UDGs are used so encode with binary not utf8-tokens - (txt2bas only) show parser tokens (for debugging)-h - Show help options-v - Show current versionProblematically using the library exposes a number of paired functions:
line2bas(String: line): Object<Uint8Array: basic, Number: lineNumber, Array: tokens, Number: length> - the byte data is contained in result.basicbas2line(Uint8Array: data): String - expects to include the line number, line length and the line itself as bytesfile2bas(String: source, Object<String=3dos: format, filename=UNTITLED: String, validate=false: Boolean>): Uint8Array - results full byte array with correct format header, if validate is true, will throw on token errorsbas2file(Uint8Array: source, String=3dos: format): String - formatted BASIC textformatText(String: line): String - processes the line through line2bas then bas2line to result the formatted linevalidateTxt(String: source): Array[String] - parses each line collecting and returning any token errorsplus3DOSHeader and tapHeader - file headers for the appropriate data formatscodes an object lookup from NextBASIC numerical value to text value, ie. 0xf5 = 'PRINT'statements(String: source): Array[Statement] - returns the parsed statement which include lineNumber and tokens for each line.renumber(String: source, Object<start: Number, end: Number, step=10: Number, base=start: Number>) - renumbers source lines and GO TO line number targets.npm linkparser-version