Add barcode-detector-api-polyfill dependency and update environment variable declarations in SvelteKit project

2026-02-17 14:58:53 -06:00
parent cff20a652a
commit 9022114c8d
2137 changed files with 201996 additions and 762 deletions
@@ -0,0 +1,93 @@
+import { decoderError } from "../../encoding/encodings";
+import { finished } from "../../encoding/finished";
+import { end_of_stream } from "../../encoding/terminology";
+import { inRange } from "../../encoding/utilities";
+import { convertCodeUnitToBytes } from "./converCodeUnitToBytes";
+/**
+ * @constructor
+ * @implements {Decoder}
+ * @param {boolean} utf16_be True if big-endian, false if little-endian.
+ * @param {{fatal: boolean}} options
+ */
+export class UTF16Decoder {
+    constructor(utf16_be, options) {
+        this.utf16_be = utf16_be;
+        this.fatal = options.fatal;
+        /** @type {?number} */ this.utf16_lead_byte = null;
+        /** @type {?number} */ this.utf16_lead_surrogate = null;
+    }
+    /**
+     * @param {Stream} stream The stream of bytes being decoded.
+     * @param {number} bite The next byte read from the stream.
+     * @return {?(number|!Array.<number>)} The next code point(s)
+     *     decoded, or null if not enough data exists in the input
+     *     stream to decode a complete code point.
+     */
+    handler(stream, bite) {
+        // 1. If byte is end-of-stream and either utf-16 lead byte or
+        // utf-16 lead surrogate is not null, set utf-16 lead byte and
+        // utf-16 lead surrogate to null, and return error.
+        if (bite === end_of_stream && (this.utf16_lead_byte !== null ||
+            this.utf16_lead_surrogate !== null)) {
+            return decoderError(this.fatal);
+        }
+        // 2. If byte is end-of-stream and utf-16 lead byte and utf-16
+        // lead surrogate are null, return finished.
+        if (bite === end_of_stream && this.utf16_lead_byte === null &&
+            this.utf16_lead_surrogate === null) {
+            return finished;
+        }
+        // 3. If utf-16 lead byte is null, set utf-16 lead byte to byte
+        // and return continue.
+        if (this.utf16_lead_byte === null) {
+            this.utf16_lead_byte = bite;
+            return null;
+        }
+        // 4. Let code unit be the result of:
+        let code_unit;
+        if (this.utf16_be) {
+            // utf-16be decoder flag is set
+            //   (utf-16 lead byte << 8) + byte.
+            code_unit = (this.utf16_lead_byte << 8) + bite;
+        }
+        else {
+            // utf-16be decoder flag is unset
+            //   (byte << 8) + utf-16 lead byte.
+            code_unit = (bite << 8) + this.utf16_lead_byte;
+        }
+        // Then set utf-16 lead byte to null.
+        this.utf16_lead_byte = null;
+        // 5. If utf-16 lead surrogate is not null, let lead surrogate
+        // be utf-16 lead surrogate, set utf-16 lead surrogate to null,
+        // and then run these substeps:
+        if (this.utf16_lead_surrogate !== null) {
+            const lead_surrogate = this.utf16_lead_surrogate;
+            this.utf16_lead_surrogate = null;
+            // 1. If code unit is in the range U+DC00 to U+DFFF,
+            // inclusive, return a code point whose value is 0x10000 +
+            // ((lead surrogate − 0xD800) << 10) + (code unit − 0xDC00).
+            if (inRange(code_unit, 0xDC00, 0xDFFF)) {
+                return 0x10000 + (lead_surrogate - 0xD800) * 0x400 +
+                    (code_unit - 0xDC00);
+            }
+            // 2. Prepend the sequence resulting of converting code unit
+            // to bytes using utf-16be decoder flag to stream and return
+            // error.
+            stream.prepend(convertCodeUnitToBytes(code_unit, this.utf16_be));
+            return decoderError(this.fatal);
+        }
+        // 6. If code unit is in the range U+D800 to U+DBFF, inclusive,
+        // set utf-16 lead surrogate to code unit and return continue.
+        if (inRange(code_unit, 0xD800, 0xDBFF)) {
+            this.utf16_lead_surrogate = code_unit;
+            return null;
+        }
+        // 7. If code unit is in the range U+DC00 to U+DFFF, inclusive,
+        // return error.
+        if (inRange(code_unit, 0xDC00, 0xDFFF))
+            return decoderError(this.fatal);
+        // 8. Return code point code unit.
+        return code_unit;
+    }
+}
+//# sourceMappingURL=UTF16Decoder.js.map