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chore: Adds primitive support for cursor movement.

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greysoh 2024-05-06 14:05:36 -04:00
parent 3a773e5b9b
commit c25e7badcd
Signed by: imterah
GPG key ID: 8FA7DD57BA6CEA37
1 changed files with 26 additions and 5 deletions
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31
lom/src/index.ts
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@ -78,6 +78,7 @@ server.on("connection", client => {
); );
let line = ""; let line = "";
let lineIndex = 0;
function println(...str: string[]) { function println(...str: string[]) {
stream.write(str.join(" ").replace("\n", "\r\n")); stream.write(str.join(" ").replace("\n", "\r\n"));
@ -97,6 +98,7 @@ server.on("connection", client => {
const argv = parseArgsStringToArgv(line); const argv = parseArgsStringToArgv(line);
line = ""; line = "";
lineIndex = 0;
if (argv[0] == "exit") { if (argv[0] == "exit") {
stream.close(); stream.close();
@ -120,12 +122,31 @@ server.on("connection", client => {
line = line.substring(0, line.length - 1); line = line.substring(0, line.length - 1);
// Ascii excape code for backspace (server side) // Ascii escape code for backspace (server side)
stream.write("\u0008 \u0008"); stream.write("\u0008 \u0008");
} else if (!readStreamData.includes("\x1B")) { } else if (readStreamData.includes("\x1B")) {
// (hacky) include all input but client sided ascii movement const leftEscape = "\x1B[D";
// TODO: implement const rightEscape = "\x1B[C";
line += readStreamData;
if (readStreamData.includes(rightEscape)) {
if (lineIndex + 1 > line.length) return setTimeout(eventLoop, 5);
lineIndex += 1;
} else if (readStreamData.includes(leftEscape)) {
if (lineIndex - 1 < 0) return setTimeout(eventLoop, 5);
lineIndex -= 1;
} else {
return setTimeout(eventLoop, 5);
}
stream.write(readStreamData);
} else {
lineIndex += readStreamData.length;
// There isn't a splice method for String prototypes. So, ugh:
line = line.substring(0, lineIndex - 1) + readStreamData + line.substring(lineIndex + readStreamData.length, line.length);
console.log(line);
stream.write(readStreamData); stream.write(readStreamData);
} }