Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/php/src/Google/Protobuf/Internal/InputStream.php

Index: third_party/protobuf/php/src/Google/Protobuf/Internal/InputStream.php
diff --git a/third_party/protobuf/php/src/Google/Protobuf/Internal/InputStream.php b/third_party/protobuf/php/src/Google/Protobuf/Internal/InputStream.php
deleted file mode 100644
index 6d6c74e906d3d14aba332a64c357d8c72c9aad4b..0000000000000000000000000000000000000000
--- a/third_party/protobuf/php/src/Google/Protobuf/Internal/InputStream.php
+++ /dev/null
@@ -1,373 +0,0 @@
-<?php
-
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-namespace Google\Protobuf\Internal;
-
-use Google\Protobuf\Internal\Uint64;
-
-function combineInt32ToInt64($high, $low)
-{
-    $isNeg = $high < 0;
-    if ($isNeg) {
-        $high = ~$high;
-        $low = ~$low;
-        $low++;
-        if (!$low) {
-            $high++;
-        }
-    }
-    $result = bcadd(bcmul($high, 4294967296), $low);
-    if ($isNeg) {
-      $result = bcsub(0, $result);
-    }
-    return $result;
-}
-
-class InputStream
-{
-
-    private $buffer;
-    private $buffer_size_after_limit;
-    private $buffer_end;
-    private $current;
-    private $current_limit;
-    private $legitimate_message_end;
-    private $recursion_budget;
-    private $recursion_limit;
-    private $total_bytes_limit;
-    private $total_bytes_read;
-
-    const MAX_VARINT_BYTES = 10;
-    const MAX_VARINT32_BYTES = 5;
-    const DEFAULT_RECURSION_LIMIT = 100;
-    const DEFAULT_TOTAL_BYTES_LIMIT = 33554432; // 32 << 20, 32MB
-
-    public function __construct($buffer)
-    {
-        $start = 0;
-        $end = strlen($buffer);
-        $this->buffer = $buffer;
-        $this->buffer_size_after_limit = 0;
-        $this->buffer_end = $end;
-        $this->current = $start;
-        $this->current_limit = $end;
-        $this->legitimate_message_end = false;
-        $this->recursion_budget = self::DEFAULT_RECURSION_LIMIT;
-        $this->recursion_limit = self::DEFAULT_RECURSION_LIMIT;
-        $this->total_bytes_limit = self::DEFAULT_TOTAL_BYTES_LIMIT;
-        $this->total_bytes_read = $end - $start;
-    }
-
-    private function advance($amount)
-    {
-        $this->current += $amount;
-    }
-
-    private function bufferSize()
-    {
-        return $this->buffer_end - $this->current;
-    }
-
-    private function current()
-    {
-        return $this->total_bytes_read -
-            ($this->buffer_end - $this->current +
-            $this->buffer_size_after_limit);
-    }
-
-    private function recomputeBufferLimits()
-    {
-        $this->buffer_end += $this->buffer_size_after_limit;
-        $closest_limit = min($this->current_limit, $this->total_bytes_limit);
-        if ($closest_limit < $this->total_bytes_read) {
-            // The limit position is in the current buffer.  We must adjust the
-            // buffer size accordingly.
-            $this->buffer_size_after_limit = $this->total_bytes_read -
-                $closest_limit;
-            $this->buffer_end -= $this->buffer_size_after_limit;
-        } else {
-            $this->buffer_size_after_limit = 0;
-        }
-    }
-
-    private function consumedEntireMessage()
-    {
-        return $this->legitimate_message_end;
-    }
-
-    /**
-     * Read uint32 into $var. Advance buffer with consumed bytes. If the
-     * contained varint is larger than 32 bits, discard the high order bits.
-     * @param $var.
-     */
-    public function readVarint32(&$var)
-    {
-        if (!$this->readVarint64($var)) {
-            return false;
-        }
-
-        if (PHP_INT_SIZE == 4) {
-            $var = bcmod($var, 4294967296);
-        } else {
-            $var &= 0xFFFFFFFF;
-        }
-
-        // Convert large uint32 to int32.
-        if ($var > 0x7FFFFFFF) {
-            if (PHP_INT_SIZE === 8) {
-                $var = $var | (0xFFFFFFFF << 32);
-            } else {
-                $var = bcsub($var, 4294967296);
-            }
-        }
-
-        $var = intval($var);
-        return true;
-    }
-
-    /**
-     * Read Uint64 into $var. Advance buffer with consumed bytes.
-     * @param $var.
-     */
-    public function readVarint64(&$var)
-    {
-        $high = 0;
-        $low = 0;
-        $count = 0;
-        $b = 0;
-
-        do {
-            if ($this->current === $this->buffer_end) {
-                return false;
-            }
-            if ($count === self::MAX_VARINT_BYTES) {
-                return false;
-            }
-            $b = ord($this->buffer[$this->current]);
-            $bits = 7 * $count;
-            if ($bits >= 32) {
-                $high |= (($b & 0x7F) << ($bits - 32));
-            } else if ($bits > 25){
-                $high_bits = $bits - 25;
-                $low = ($low | (($b & 0x7F) << $bits)) & (int) 0xFFFFFFFF;
-                $high = $b & ((0x1 << $high_bits) -1);
-            } else {
-                $low |= (($b & 0x7F) << $bits);
-            }
-
-            $this->advance(1);
-            $count += 1;
-        } while ($b & 0x80);
-
-        if (PHP_INT_SIZE == 4) {
-            $var = combineInt32ToInt64($high, $low);
-        } else {
-            $var = ($high & 0xFFFFFFFF) << 32 |
-                   ($low & 0xFFFFFFFF);
-        }
-        return true;
-    }
-
-    /**
-     * Read int into $var. If the result is larger than the largest integer, $var
-     * will be -1. Advance buffer with consumed bytes.
-     * @param $var.
-     */
-    public function readVarintSizeAsInt(&$var)
-    {
-        if (!$this->readVarint64($var)) {
-            return false;
-        }
-        $var = (int)$var;
-        return true;
-    }
-
-    /**
-     * Read 32-bit unsiged integer to $var. If the buffer has less than 4 bytes,
-     * return false. Advance buffer with consumed bytes.
-     * @param $var.
-     */
-    public function readLittleEndian32(&$var)
-    {
-        $data = null;
-        if (!$this->readRaw(4, $data)) {
-            return false;
-        }
-        $var = unpack('V', $data);
-        $var = $var[1];
-        return true;
-    }
-
-    /**
-     * Read 64-bit unsiged integer to $var. If the buffer has less than 8 bytes,
-     * return false. Advance buffer with consumed bytes.
-     * @param $var.
-     */
-    public function readLittleEndian64(&$var)
-    {
-        $data = null;
-        if (!$this->readRaw(4, $data)) {
-            return false;
-        }
-        $low = unpack('V', $data)[1];
-        if (!$this->readRaw(4, $data)) {
-            return false;
-        }
-        $high = unpack('V', $data)[1];
-        if (PHP_INT_SIZE == 4) {
-            $var = combineInt32ToInt64($high, $low);
-        } else {
-            $var = ($high << 32) | $low;
-        }
-        return true;
-    }
-
-    /**
-     * Read tag into $var. Advance buffer with consumed bytes.
-     * @param $var.
-     */
-    public function readTag()
-    {
-        if ($this->current === $this->buffer_end) {
-            // Make sure that it failed due to EOF, not because we hit
-            // total_bytes_limit, which, unlike normal limits, is not a valid
-            // place to end a message.
-            $current_position = $this->total_bytes_read -
-                $this->buffer_size_after_limit;
-            if ($current_position >= $this->total_bytes_limit) {
-                // Hit total_bytes_limit_.  But if we also hit the normal limit,
-                // we're still OK.
-                $this->legitimate_message_end =
-                    ($this->current_limit === $this->total_bytes_limit);
-            } else {
-                $this->legitimate_message_end = true;
-            }
-            return 0;
-        }
-
-        $result = 0;
-        // The larget tag is 2^29 - 1, which can be represented by int32.
-        $success = $this->readVarint32($result);
-        if ($success) {
-            return $result;
-        } else {
-            return 0;
-        }
-    }
-
-    public function readRaw($size, &$buffer)
-    {
-        $current_buffer_size = 0;
-        if ($this->bufferSize() < $size) {
-            return false;
-        }
-
-        $buffer = substr($this->buffer, $this->current, $size);
-        $this->advance($size);
-
-        return true;
-    }
-
-    /* Places a limit on the number of bytes that the stream may read, starting
-     * from the current position.  Once the stream hits this limit, it will act
-     * like the end of the input has been reached until popLimit() is called.
-     *
-     * As the names imply, the stream conceptually has a stack of limits.  The
-     * shortest limit on the stack is always enforced, even if it is not the top
-     * limit.
-     *
-     * The value returned by pushLimit() is opaque to the caller, and must be
-     * passed unchanged to the corresponding call to popLimit().
-     *
-     * @param integer $byte_limit
-     */
-    public function pushLimit($byte_limit)
-    {
-        // Current position relative to the beginning of the stream.
-        $current_position = $this->current();
-        $old_limit = $this->current_limit;
-
-        // security: byte_limit is possibly evil, so check for negative values
-        // and overflow.
-        if ($byte_limit >= 0 && $byte_limit <= PHP_INT_MAX - $current_position) {
-            $this->current_limit = $current_position + $byte_limit;
-        } else {
-            // Negative or overflow.
-            $this->current_limit = PHP_INT_MAX;
-        }
-
-        // We need to enforce all limits, not just the new one, so if the previous
-        // limit was before the new requested limit, we continue to enforce the
-        // previous limit.
-        $this->current_limit = min($this->current_limit, $old_limit);
-
-        $this->recomputeBufferLimits();
-        return $old_limit;
-    }
-
-    /* The limit passed in is actually the *old* limit, which we returned from
-     * PushLimit().
-     *
-     * @param integer $byte_limit
-     */
-    public function popLimit($byte_limit)
-    {
-        $this->current_limit = $byte_limit;
-        $this->recomputeBufferLimits();
-        // We may no longer be at a legitimate message end.  ReadTag() needs to
-        // be called again to find out.
-        $this->legitimate_message_end = false;
-    }
-
-    public function incrementRecursionDepthAndPushLimit(
-    $byte_limit, &$old_limit, &$recursion_budget)
-    {
-        $old_limit = $this->pushLimit($byte_limit);
-        $recursion_limit = --$this->recursion_limit;
-    }
-
-    public function decrementRecursionDepthAndPopLimit($byte_limit)
-    {
-        $result = $this->consumedEntireMessage();
-        $this->popLimit($byte_limit);
-        ++$this->recursion_budget;
-        return $result;
-    }
-
-    public function bytesUntilLimit()
-    {
-        if ($this->current_limit === PHP_INT_MAX) {
-            return -1;
-        }
-        return $this->current_limit - $this->current;
-    }
-}