diff options
Diffstat (limited to 'php/src/Google/Protobuf/Internal/GPBJsonWire.php')
| -rw-r--r-- | php/src/Google/Protobuf/Internal/GPBJsonWire.php | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/php/src/Google/Protobuf/Internal/GPBJsonWire.php b/php/src/Google/Protobuf/Internal/GPBJsonWire.php new file mode 100644 index 00000000..97789356 --- /dev/null +++ b/php/src/Google/Protobuf/Internal/GPBJsonWire.php @@ -0,0 +1,285 @@ +<?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; + +class GPBJsonWire +{ + + public static function serializeFieldToStream( + $value, + $field, + &$output) + { + $output->writeRaw("\"", 1); + $field_name = GPBJsonWire::formatFieldName($field); + $output->writeRaw($field_name, strlen($field_name)); + $output->writeRaw("\":", 2); + return static::serializeFieldValueToStream($value, $field, $output); + } + + private static function serializeFieldValueToStream( + $values, + $field, + &$output) + { + if ($field->isMap()) { + $output->writeRaw("{", 1); + $first = true; + $map_entry = $field->getMessageType(); + $key_field = $map_entry->getFieldByNumber(1); + $value_field = $map_entry->getFieldByNumber(2); + + switch ($key_field->getType()) { + case GPBType::STRING: + case GPBType::SFIXED64: + case GPBType::INT64: + case GPBType::SINT64: + case GPBType::FIXED64: + case GPBType::UINT64: + $additional_quote = false; + break; + default: + $additional_quote = true; + } + + foreach ($values as $key => $value) { + if ($first) { + $first = false; + } else { + $output->writeRaw(",", 1); + } + if ($additional_quote) { + $output->writeRaw("\"", 1); + } + if (!static::serializeSingularFieldValueToStream( + $key, + $key_field, + $output)) { + return false; + } + if ($additional_quote) { + $output->writeRaw("\"", 1); + } + $output->writeRaw(":", 1); + if (!static::serializeSingularFieldValueToStream( + $value, + $value_field, + $output)) { + return false; + } + } + $output->writeRaw("}", 1); + return true; + } elseif ($field->isRepeated()) { + $output->writeRaw("[", 1); + $first = true; + foreach ($values as $value) { + if ($first) { + $first = false; + } else { + $output->writeRaw(",", 1); + } + if (!static::serializeSingularFieldValueToStream( + $value, + $field, + $output)) { + return false; + } + } + $output->writeRaw("]", 1); + return true; + } else { + return static::serializeSingularFieldValueToStream( + $values, + $field, + $output); + } + } + + private static function serializeSingularFieldValueToStream( + $value, + $field, + &$output) + { + switch ($field->getType()) { + case GPBType::SFIXED32: + case GPBType::SINT32: + case GPBType::INT32: + $str_value = strval($value); + $output->writeRaw($str_value, strlen($str_value)); + break; + case GPBType::FIXED32: + case GPBType::UINT32: + if ($value < 0) { + $value = bcadd($value, "4294967296"); + } + $str_value = strval($value); + $output->writeRaw($str_value, strlen($str_value)); + break; + case GPBType::FIXED64: + case GPBType::UINT64: + if ($value < 0) { + $value = bcadd($value, "18446744073709551616"); + } + // Intentional fall through. + case GPBType::SFIXED64: + case GPBType::INT64: + case GPBType::SINT64: + $output->writeRaw("\"", 1); + $str_value = strval($value); + $output->writeRaw($str_value, strlen($str_value)); + $output->writeRaw("\"", 1); + break; + case GPBType::FLOAT: + if (is_nan($value)) { + $str_value = "\"NaN\""; + } elseif ($value === INF) { + $str_value = "\"Infinity\""; + } elseif ($value === -INF) { + $str_value = "\"-Infinity\""; + } else { + $str_value = sprintf("%.8g", $value); + } + $output->writeRaw($str_value, strlen($str_value)); + break; + case GPBType::DOUBLE: + if (is_nan($value)) { + $str_value = "\"NaN\""; + } elseif ($value === INF) { + $str_value = "\"Infinity\""; + } elseif ($value === -INF) { + $str_value = "\"-Infinity\""; + } else { + $str_value = sprintf("%.17g", $value); + } + $output->writeRaw($str_value, strlen($str_value)); + break; + case GPBType::ENUM: + $enum_desc = $field->getEnumType(); + $enum_value_desc = $enum_desc->getValueByNumber($value); + if (!is_null($enum_value_desc)) { + $str_value = $enum_value_desc->getName(); + $output->writeRaw("\"", 1); + $output->writeRaw($str_value, strlen($str_value)); + $output->writeRaw("\"", 1); + } else { + $str_value = strval($value); + $output->writeRaw($str_value, strlen($str_value)); + } + break; + case GPBType::BOOL: + if ($value) { + $output->writeRaw("true", 4); + } else { + $output->writeRaw("false", 5); + } + break; + case GPBType::BYTES: + $value = base64_encode($value); + case GPBType::STRING: + $value = json_encode($value); + $output->writeRaw($value, strlen($value)); + break; + // case GPBType::GROUP: + // echo "GROUP\xA"; + // trigger_error("Not implemented.", E_ERROR); + // break; + case GPBType::MESSAGE: + $value->serializeToJsonStream($output); + break; + default: + user_error("Unsupported type."); + return false; + } + return true; + } + + private static function formatFieldName($field) + { + return $field->getJsonName(); + } + + // Used for escaping control chars in strings. + private static $k_control_char_limit = 0x20; + + private static function jsonNiceEscape($c) + { + switch ($c) { + case '"': return "\\\""; + case '\\': return "\\\\"; + case '/': return "\\/"; + case '\b': return "\\b"; + case '\f': return "\\f"; + case '\n': return "\\n"; + case '\r': return "\\r"; + case '\t': return "\\t"; + default: return NULL; + } + } + + private static function isJsonEscaped($c) + { + // See RFC 4627. + return $c < chr($k_control_char_limit) || $c === "\"" || $c === "\\"; + } + + public static function escapedJson($value) + { + $escaped_value = ""; + $unescaped_run = ""; + for ($i = 0; $i < strlen($value); $i++) { + $c = $value[$i]; + // Handle escaping. + if (static::isJsonEscaped($c)) { + // Use a "nice" escape, like \n, if one exists for this + // character. + $escape = static::jsonNiceEscape($c); + if (is_null($escape)) { + $escape = "\\u00" . bin2hex($c); + } + if ($unescaped_run !== "") { + $escaped_value .= $unescaped_run; + $unescaped_run = ""; + } + $escaped_value .= $escape; + } else { + if ($unescaped_run === "") { + $unescaped_run .= $c; + } + } + } + $escaped_value .= $unescaped_run; + return $escaped_value; + } + +} |