Initial commit

2025-11-20 15:27:34 -06:00
commit cc72c9fc5d
3221 changed files with 737477 additions and 0 deletions
--- a/node_modules/@serialport/parser-slip-encoder/dist/decoder.js
+++ b/node_modules/@serialport/parser-slip-encoder/dist/decoder.js
@@ -0,0 +1,83 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SlipDecoder = void 0;
+const stream_1 = require("stream");
+/**
+ * A transform stream that decodes slip encoded data.
+ * @extends Transform
+ *
+ * Runs in O(n) time, stripping out slip encoding and emitting decoded data. Optionally custom slip escape and delimiters can be provided.
+ */
+class SlipDecoder extends stream_1.Transform {
+    opts;
+    buffer;
+    escape;
+    start;
+    constructor(options = {}) {
+        super(options);
+        const { START, ESC = 0xdb, END = 0xc0, ESC_START, ESC_END = 0xdc, ESC_ESC = 0xdd } = options;
+        this.opts = {
+            START,
+            ESC,
+            END,
+            ESC_START,
+            ESC_END,
+            ESC_ESC,
+        };
+        this.buffer = Buffer.alloc(0);
+        this.escape = false;
+        this.start = false;
+    }
+    _transform(chunk, encoding, cb) {
+        for (let ndx = 0; ndx < chunk.length; ndx++) {
+            let byte = chunk[ndx];
+            if (byte === this.opts.START) {
+                this.start = true;
+                continue;
+            }
+            else if (undefined == this.opts.START) {
+                this.start = true;
+            }
+            if (this.escape) {
+                if (byte === this.opts.ESC_START && this.opts.START) {
+                    byte = this.opts.START;
+                }
+                else if (byte === this.opts.ESC_ESC) {
+                    byte = this.opts.ESC;
+                }
+                else if (byte === this.opts.ESC_END) {
+                    byte = this.opts.END;
+                }
+                else {
+                    this.escape = false;
+                    this.push(this.buffer);
+                    this.buffer = Buffer.alloc(0);
+                }
+            }
+            else {
+                if (byte === this.opts.ESC) {
+                    this.escape = true;
+                    continue;
+                }
+                if (byte === this.opts.END) {
+                    this.push(this.buffer);
+                    this.buffer = Buffer.alloc(0);
+                    this.escape = false;
+                    this.start = false;
+                    continue;
+                }
+            }
+            this.escape = false;
+            if (this.start) {
+                this.buffer = Buffer.concat([this.buffer, Buffer.from([byte])]);
+            }
+        }
+        cb();
+    }
+    _flush(cb) {
+        this.push(this.buffer);
+        this.buffer = Buffer.alloc(0);
+        cb();
+    }
+}
+exports.SlipDecoder = SlipDecoder;