full site update

2025-07-24 18:46:24 +02:00
parent bfe2b90d8d
commit 37a6e0ab31
6912 changed files with 540482 additions and 361712 deletions
--- a/node_modules/brotli/dec/bit_reader.js
+++ b/node_modules/brotli/dec/bit_reader.js
@@ -0,0 +1,124 @@
+/* Copyright 2013 Google Inc. All Rights Reserved.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+   Bit reading helpers
+*/
+
+var BROTLI_READ_SIZE = 4096;
+var BROTLI_IBUF_SIZE =  (2 * BROTLI_READ_SIZE + 32);
+var BROTLI_IBUF_MASK =  (2 * BROTLI_READ_SIZE - 1);
+
+var kBitMask = new Uint32Array([
+  0, 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767,
+  65535, 131071, 262143, 524287, 1048575, 2097151, 4194303, 8388607, 16777215
+]);
+
+/* Input byte buffer, consist of a ringbuffer and a "slack" region where */
+/* bytes from the start of the ringbuffer are copied. */
+function BrotliBitReader(input) {
+  this.buf_ = new Uint8Array(BROTLI_IBUF_SIZE);
+  this.input_ = input;    /* input callback */
+  
+  this.reset();
+}
+
+BrotliBitReader.READ_SIZE = BROTLI_READ_SIZE;
+BrotliBitReader.IBUF_MASK = BROTLI_IBUF_MASK;
+
+BrotliBitReader.prototype.reset = function() {
+  this.buf_ptr_ = 0;      /* next input will write here */
+  this.val_ = 0;          /* pre-fetched bits */
+  this.pos_ = 0;          /* byte position in stream */
+  this.bit_pos_ = 0;      /* current bit-reading position in val_ */
+  this.bit_end_pos_ = 0;  /* bit-reading end position from LSB of val_ */
+  this.eos_ = 0;          /* input stream is finished */
+  
+  this.readMoreInput();
+  for (var i = 0; i < 4; i++) {
+    this.val_ |= this.buf_[this.pos_] << (8 * i);
+    ++this.pos_;
+  }
+  
+  return this.bit_end_pos_ > 0;
+};
+
+/* Fills up the input ringbuffer by calling the input callback.
+
+   Does nothing if there are at least 32 bytes present after current position.
+
+   Returns 0 if either:
+    - the input callback returned an error, or
+    - there is no more input and the position is past the end of the stream.
+
+   After encountering the end of the input stream, 32 additional zero bytes are
+   copied to the ringbuffer, therefore it is safe to call this function after
+   every 32 bytes of input is read.
+*/
+BrotliBitReader.prototype.readMoreInput = function() {
+  if (this.bit_end_pos_ > 256) {
+    return;
+  } else if (this.eos_) {
+    if (this.bit_pos_ > this.bit_end_pos_)
+      throw new Error('Unexpected end of input ' + this.bit_pos_ + ' ' + this.bit_end_pos_);
+  } else {
+    var dst = this.buf_ptr_;
+    var bytes_read = this.input_.read(this.buf_, dst, BROTLI_READ_SIZE);
+    if (bytes_read < 0) {
+      throw new Error('Unexpected end of input');
+    }
+    
+    if (bytes_read < BROTLI_READ_SIZE) {
+      this.eos_ = 1;
+      /* Store 32 bytes of zero after the stream end. */
+      for (var p = 0; p < 32; p++)
+        this.buf_[dst + bytes_read + p] = 0;
+    }
+    
+    if (dst === 0) {
+      /* Copy the head of the ringbuffer to the slack region. */
+      for (var p = 0; p < 32; p++)
+        this.buf_[(BROTLI_READ_SIZE << 1) + p] = this.buf_[p];
+
+      this.buf_ptr_ = BROTLI_READ_SIZE;
+    } else {
+      this.buf_ptr_ = 0;
+    }
+    
+    this.bit_end_pos_ += bytes_read << 3;
+  }
+};
+
+/* Guarantees that there are at least 24 bits in the buffer. */
+BrotliBitReader.prototype.fillBitWindow = function() {    
+  while (this.bit_pos_ >= 8) {
+    this.val_ >>>= 8;
+    this.val_ |= this.buf_[this.pos_ & BROTLI_IBUF_MASK] << 24;
+    ++this.pos_;
+    this.bit_pos_ = this.bit_pos_ - 8 >>> 0;
+    this.bit_end_pos_ = this.bit_end_pos_ - 8 >>> 0;
+  }
+};
+
+/* Reads the specified number of bits from Read Buffer. */
+BrotliBitReader.prototype.readBits = function(n_bits) {
+  if (32 - this.bit_pos_ < n_bits) {
+    this.fillBitWindow();
+  }
+  
+  var val = ((this.val_ >>> this.bit_pos_) & kBitMask[n_bits]);
+  this.bit_pos_ += n_bits;
+  return val;
+};
+
+module.exports = BrotliBitReader;