<?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\GPBType;
use Google\Protobuf\Internal\RepeatedField;
use Google\Protobuf\Internal\MapField;
class GPBUtil
{
public static function divideInt64ToInt32($value, &$high, &$low, $trim = false)
{
$isNeg = (bccomp($value, 0) < 0);
if ($isNeg) {
$value = bcsub(0, $value);
}
$high = bcdiv($value, 4294967296);
$low = bcmod($value, 4294967296);
if (bccomp($high, 2147483647) > 0) {
$high = (int) bcsub($high, 4294967296);
} else {
$high = (int) $high;
}
if (bccomp($low, 2147483647) > 0) {
$low = (int) bcsub($low, 4294967296);
} else {
$low = (int) $low;
}
if ($isNeg) {
$high = ~$high;
$low = ~$low;
$low++;
if (!$low) {
$high = (int)($high + 1);
}
}
if ($trim) {
$high = 0;
}
}
public static function checkString(&$var, $check_utf8)
{
if (is_array($var) || is_object($var)) {
throw new \InvalidArgumentException("Expect string.");
}
if (!is_string($var)) {
$var = strval($var);
}
if ($check_utf8 && !preg_match('//u', $var)) {
throw new \Exception("Expect utf-8 encoding.");
}
}
public static function checkEnum(&$var)
{
static::checkInt32($var);
}
public static function checkInt32(&$var)
{
if (is_numeric($var)) {
$var = intval($var);
} else {
throw new \Exception("Expect integer.");
}
}
public static function checkUint32(&$var)
{
if (is_numeric($var)) {
if (PHP_INT_SIZE === 8) {
$var = intval($var);
$var |= ((-(($var >> 31) & 0x1)) & ~0xFFFFFFFF);
} else {
if (bccomp($var, 0x7FFFFFFF) > 0) {
$var = bcsub($var, "4294967296");
}
$var = (int) $var;
}
} else {
throw new \Exception("Expect integer.");
}
}
public static function checkInt64(&$var)
{
if (is_numeric($var)) {
if (PHP_INT_SIZE == 8) {
$var = intval($var);
} else {
if (is_float($var) ||
is_integer($var) ||
(is_string($var) &&
bccomp($var, "9223372036854774784") < 0)) {
$var = number_format($var, 0, ".", "");
}
}
} else {
throw new \Exception("Expect integer.");
}
}
public static function checkUint64(&$var)
{
if (is_numeric($var)) {
if (PHP_INT_SIZE == 8) {
$var = intval($var);
} else {
$var = number_format($var, 0, ".", "");
}
} else {
throw new \Exception("Expect integer.");
}
}
public static function checkFloat(&$var)
{
if (is_float($var) || is_numeric($var)) {
$var = floatval($var);
} else {
throw new \Exception("Expect float.");
}
}
public static function checkDouble(&$var)
{
if (is_float($var) || is_numeric($var)) {
$var = floatval($var);
} else {
throw new \Exception("Expect float.");
}
}
public static function checkBool(&$var)
{
if (is_array($var) || is_object($var)) {
throw new \Exception("Expect boolean.");
}
$var = boolval($var);
}
public static function checkMessage(&$var, $klass)
{
if (!$var instanceof $klass && !is_null($var)) {
throw new \Exception("Expect message.");
}
}
public static function checkRepeatedField(&$var, $type, $klass = null)
{
if (!$var instanceof RepeatedField && !is_array($var)) {
throw new \Exception("Expect array.");
}
if (is_array($var)) {
$tmp = new RepeatedField($type, $klass);
foreach ($var as $value) {
$tmp[] = $value;
}
return $tmp;
} else {
if ($var->getType() != $type) {
throw new \Exception(
"Expect repeated field of different type.");
}
if ($var->getType() === GPBType::MESSAGE &&
$var->getClass() !== $klass) {
throw new \Exception(
"Expect repeated field of different message.");
}
return $var;
}
}
public static function checkMapField(&$var, $key_type, $value_type, $klass = null)
{
if (!$var instanceof MapField && !is_array($var)) {
throw new \Exception("Expect dict.");
}
if (is_array($var)) {
$tmp = new MapField($key_type, $value_type, $klass);
foreach ($var as $key => $value) {
$tmp[$key] = $value;
}
return $tmp;
} else {
if ($var->getKeyType() != $key_type) {
throw new \Exception("Expect map field of key type.");
}
if ($var->getValueType() != $value_type) {
throw new \Exception("Expect map field of value type.");
}
if ($var->getValueType() === GPBType::MESSAGE &&
$var->getValueClass() !== $klass) {
throw new \Exception(
"Expect map field of different value message.");
}
return $var;
}
}
public static function Int64($value)
{
return new Int64($value);
}
public static function Uint64($value)
{
return new Uint64($value);
}
public static function getClassNamePrefix(
$classname,
$file_proto)
{
$option = $file_proto->getOptions();
$prefix = is_null($option) ? "" : $option->getPhpClassPrefix();
if ($prefix !== "") {
return $prefix;
}
$reserved_words = array("Empty", "ECHO", "ARRAY");
foreach ($reserved_words as $reserved_word) {
if ($classname === $reserved_word) {
if ($file_proto->getPackage() === "google.protobuf") {
return "GPB";
} else {
return "PB";
}
}
}
return "";
}
public static function getClassNameWithoutPackage(
$name,
$file_proto)
{
$classname = implode('_', array_map('ucwords', explode('.', $name)));
return static::getClassNamePrefix($classname, $file_proto) . $classname;
}
public static function getFullClassName(
$proto,
$containing,
$file_proto,
&$message_name_without_package,
&$classname,
&$fullname)
{
// Full name needs to start with '.'.
$message_name_without_package = $proto->getName();
if ($containing !== "") {
$message_name_without_package =
$containing . "." . $message_name_without_package;
}
$package = $file_proto->getPackage();
if ($package === "") {
$fullname = "." . $message_name_without_package;
} else {
$fullname = "." . $package . "." . $message_name_without_package;
}
$class_name_without_package =
static::getClassNameWithoutPackage($message_name_without_package, $file_proto);
$option = $file_proto->getOptions();
if (!is_null($option) && $option->hasPhpNamespace()) {
$namespace = $option->getPhpNamespace();
if ($namespace !== "") {
$classname = $namespace . "\\" . $class_name_without_package;
return;
} else {
$classname = $class_name_without_package;
return;
}
}
if ($package === "") {
$classname = $class_name_without_package;
} else {
$classname =
implode('\\', array_map('ucwords', explode('.', $package))).
"\\".$class_name_without_package;
}
}
public static function combineInt32ToInt64($high, $low)
{
$isNeg = $high < 0;
if ($isNeg) {
$high = ~$high;
$low = ~$low;
$low++;
if (!$low) {
$high = (int) ($high + 1);
}
}
$result = bcadd(bcmul($high, 4294967296), $low);
if ($low < 0) {
$result = bcadd($result, 4294967296);
}
if ($isNeg) {
$result = bcsub(0, $result);
}
return $result;
}
}
