1 files changed, 43 insertions, 0 deletions
diff --git a/roles/reverseproxy/files/conversejs/src/shared/gif/stream.js b/roles/reverseproxy/files/conversejs/src/shared/gif/stream.js
new file mode 100644
index 0000000..e9306ff
--- /dev/null
+++ b/roles/reverseproxy/files/conversejs/src/shared/gif/stream.js
@@ -0,0 +1,43 @@
+
+export default class Stream {
+
+    constructor (data) {
+        if (data.toString().indexOf('ArrayBuffer') > 0) {
+            data = new Uint8Array(data);
+        }
+        this.data = data;
+        this.len = this.data.length;
+        this.pos = 0;
+    }
+
+    readByte () {
+        if (this.pos >= this.data.length) {
+            throw new Error('Attempted to read past end of stream.');
+        }
+        if (this.data instanceof Uint8Array)
+            return this.data[this.pos++];
+        else
+            return this.data.charCodeAt(this.pos++) & 0xFF;
+    }
+
+    readBytes (n) {
+        const bytes = [];
+        for (let i = 0; i < n; i++) {
+            bytes.push(this.readByte());
+        }
+        return bytes;
+    }
+
+    read (n) {
+        let s = '';
+        for (let i = 0; i < n; i++) {
+            s += String.fromCharCode(this.readByte());
+        }
+        return s;
+    }
+
+    readUnsigned () { // Little-endian.
+        const a = this.readBytes(2);
+        return (a[1] << 8) + a[0];
+    }
+}