avm99963 | 99bb77c | 2020-01-27 03:15:08 +0100 | [diff] [blame^] | 1 | <?php |
| 2 | |
| 3 | // Protocol Buffers - Google's data interchange format |
| 4 | // Copyright 2008 Google Inc. All rights reserved. |
| 5 | // https://developers.google.com/protocol-buffers/ |
| 6 | // |
| 7 | // Redistribution and use in source and binary forms, with or without |
| 8 | // modification, are permitted provided that the following conditions are |
| 9 | // met: |
| 10 | // |
| 11 | // * Redistributions of source code must retain the above copyright |
| 12 | // notice, this list of conditions and the following disclaimer. |
| 13 | // * Redistributions in binary form must reproduce the above |
| 14 | // copyright notice, this list of conditions and the following disclaimer |
| 15 | // in the documentation and/or other materials provided with the |
| 16 | // distribution. |
| 17 | // * Neither the name of Google Inc. nor the names of its |
| 18 | // contributors may be used to endorse or promote products derived from |
| 19 | // this software without specific prior written permission. |
| 20 | // |
| 21 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 25 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 26 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 27 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 28 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 29 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 30 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 31 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | |
| 33 | namespace Google\Protobuf\Internal; |
| 34 | |
| 35 | class GPBJsonWire |
| 36 | { |
| 37 | |
| 38 | public static function serializeFieldToStream( |
| 39 | $value, |
| 40 | $field, |
| 41 | &$output, $has_field_name = true) |
| 42 | { |
| 43 | if ($has_field_name) { |
| 44 | $output->writeRaw("\"", 1); |
| 45 | $field_name = GPBJsonWire::formatFieldName($field); |
| 46 | $output->writeRaw($field_name, strlen($field_name)); |
| 47 | $output->writeRaw("\":", 2); |
| 48 | } |
| 49 | return static::serializeFieldValueToStream( |
| 50 | $value, |
| 51 | $field, |
| 52 | $output, |
| 53 | !$has_field_name); |
| 54 | } |
| 55 | |
| 56 | public static function serializeFieldValueToStream( |
| 57 | $values, |
| 58 | $field, |
| 59 | &$output, |
| 60 | $is_well_known = false) |
| 61 | { |
| 62 | if ($field->isMap()) { |
| 63 | $output->writeRaw("{", 1); |
| 64 | $first = true; |
| 65 | $map_entry = $field->getMessageType(); |
| 66 | $key_field = $map_entry->getFieldByNumber(1); |
| 67 | $value_field = $map_entry->getFieldByNumber(2); |
| 68 | |
| 69 | switch ($key_field->getType()) { |
| 70 | case GPBType::STRING: |
| 71 | case GPBType::SFIXED64: |
| 72 | case GPBType::INT64: |
| 73 | case GPBType::SINT64: |
| 74 | case GPBType::FIXED64: |
| 75 | case GPBType::UINT64: |
| 76 | $additional_quote = false; |
| 77 | break; |
| 78 | default: |
| 79 | $additional_quote = true; |
| 80 | } |
| 81 | |
| 82 | foreach ($values as $key => $value) { |
| 83 | if ($first) { |
| 84 | $first = false; |
| 85 | } else { |
| 86 | $output->writeRaw(",", 1); |
| 87 | } |
| 88 | if ($additional_quote) { |
| 89 | $output->writeRaw("\"", 1); |
| 90 | } |
| 91 | if (!static::serializeSingularFieldValueToStream( |
| 92 | $key, |
| 93 | $key_field, |
| 94 | $output, |
| 95 | $is_well_known)) { |
| 96 | return false; |
| 97 | } |
| 98 | if ($additional_quote) { |
| 99 | $output->writeRaw("\"", 1); |
| 100 | } |
| 101 | $output->writeRaw(":", 1); |
| 102 | if (!static::serializeSingularFieldValueToStream( |
| 103 | $value, |
| 104 | $value_field, |
| 105 | $output, |
| 106 | $is_well_known)) { |
| 107 | return false; |
| 108 | } |
| 109 | } |
| 110 | $output->writeRaw("}", 1); |
| 111 | return true; |
| 112 | } elseif ($field->isRepeated()) { |
| 113 | $output->writeRaw("[", 1); |
| 114 | $first = true; |
| 115 | foreach ($values as $value) { |
| 116 | if ($first) { |
| 117 | $first = false; |
| 118 | } else { |
| 119 | $output->writeRaw(",", 1); |
| 120 | } |
| 121 | if (!static::serializeSingularFieldValueToStream( |
| 122 | $value, |
| 123 | $field, |
| 124 | $output, |
| 125 | $is_well_known)) { |
| 126 | return false; |
| 127 | } |
| 128 | } |
| 129 | $output->writeRaw("]", 1); |
| 130 | return true; |
| 131 | } else { |
| 132 | return static::serializeSingularFieldValueToStream( |
| 133 | $values, |
| 134 | $field, |
| 135 | $output, |
| 136 | $is_well_known); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | private static function serializeSingularFieldValueToStream( |
| 141 | $value, |
| 142 | $field, |
| 143 | &$output, $is_well_known = false) |
| 144 | { |
| 145 | switch ($field->getType()) { |
| 146 | case GPBType::SFIXED32: |
| 147 | case GPBType::SINT32: |
| 148 | case GPBType::INT32: |
| 149 | $str_value = strval($value); |
| 150 | $output->writeRaw($str_value, strlen($str_value)); |
| 151 | break; |
| 152 | case GPBType::FIXED32: |
| 153 | case GPBType::UINT32: |
| 154 | if ($value < 0) { |
| 155 | $value = bcadd($value, "4294967296"); |
| 156 | } |
| 157 | $str_value = strval($value); |
| 158 | $output->writeRaw($str_value, strlen($str_value)); |
| 159 | break; |
| 160 | case GPBType::FIXED64: |
| 161 | case GPBType::UINT64: |
| 162 | if ($value < 0) { |
| 163 | $value = bcadd($value, "18446744073709551616"); |
| 164 | } |
| 165 | // Intentional fall through. |
| 166 | case GPBType::SFIXED64: |
| 167 | case GPBType::INT64: |
| 168 | case GPBType::SINT64: |
| 169 | $output->writeRaw("\"", 1); |
| 170 | $str_value = strval($value); |
| 171 | $output->writeRaw($str_value, strlen($str_value)); |
| 172 | $output->writeRaw("\"", 1); |
| 173 | break; |
| 174 | case GPBType::FLOAT: |
| 175 | if (is_nan($value)) { |
| 176 | $str_value = "\"NaN\""; |
| 177 | } elseif ($value === INF) { |
| 178 | $str_value = "\"Infinity\""; |
| 179 | } elseif ($value === -INF) { |
| 180 | $str_value = "\"-Infinity\""; |
| 181 | } else { |
| 182 | $str_value = sprintf("%.8g", $value); |
| 183 | } |
| 184 | $output->writeRaw($str_value, strlen($str_value)); |
| 185 | break; |
| 186 | case GPBType::DOUBLE: |
| 187 | if (is_nan($value)) { |
| 188 | $str_value = "\"NaN\""; |
| 189 | } elseif ($value === INF) { |
| 190 | $str_value = "\"Infinity\""; |
| 191 | } elseif ($value === -INF) { |
| 192 | $str_value = "\"-Infinity\""; |
| 193 | } else { |
| 194 | $str_value = sprintf("%.17g", $value); |
| 195 | } |
| 196 | $output->writeRaw($str_value, strlen($str_value)); |
| 197 | break; |
| 198 | case GPBType::ENUM: |
| 199 | $enum_desc = $field->getEnumType(); |
| 200 | if ($enum_desc->getClass() === "Google\Protobuf\NullValue") { |
| 201 | $output->writeRaw("null", 4); |
| 202 | break; |
| 203 | } |
| 204 | $enum_value_desc = $enum_desc->getValueByNumber($value); |
| 205 | if (!is_null($enum_value_desc)) { |
| 206 | $str_value = $enum_value_desc->getName(); |
| 207 | $output->writeRaw("\"", 1); |
| 208 | $output->writeRaw($str_value, strlen($str_value)); |
| 209 | $output->writeRaw("\"", 1); |
| 210 | } else { |
| 211 | $str_value = strval($value); |
| 212 | $output->writeRaw($str_value, strlen($str_value)); |
| 213 | } |
| 214 | break; |
| 215 | case GPBType::BOOL: |
| 216 | if ($value) { |
| 217 | $output->writeRaw("true", 4); |
| 218 | } else { |
| 219 | $output->writeRaw("false", 5); |
| 220 | } |
| 221 | break; |
| 222 | case GPBType::BYTES: |
| 223 | $bytes_value = base64_encode($value); |
| 224 | $output->writeRaw("\"", 1); |
| 225 | $output->writeRaw($bytes_value, strlen($bytes_value)); |
| 226 | $output->writeRaw("\"", 1); |
| 227 | break; |
| 228 | case GPBType::STRING: |
| 229 | $value = json_encode($value, JSON_UNESCAPED_UNICODE); |
| 230 | $output->writeRaw($value, strlen($value)); |
| 231 | break; |
| 232 | // case GPBType::GROUP: |
| 233 | // echo "GROUP\xA"; |
| 234 | // trigger_error("Not implemented.", E_ERROR); |
| 235 | // break; |
| 236 | case GPBType::MESSAGE: |
| 237 | $value->serializeToJsonStream($output); |
| 238 | break; |
| 239 | default: |
| 240 | user_error("Unsupported type."); |
| 241 | return false; |
| 242 | } |
| 243 | return true; |
| 244 | } |
| 245 | |
| 246 | private static function formatFieldName($field) |
| 247 | { |
| 248 | return $field->getJsonName(); |
| 249 | } |
| 250 | |
| 251 | // Used for escaping control chars in strings. |
| 252 | private static $k_control_char_limit = 0x20; |
| 253 | |
| 254 | private static function jsonNiceEscape($c) |
| 255 | { |
| 256 | switch ($c) { |
| 257 | case '"': return "\\\""; |
| 258 | case '\\': return "\\\\"; |
| 259 | case '/': return "\\/"; |
| 260 | case '\b': return "\\b"; |
| 261 | case '\f': return "\\f"; |
| 262 | case '\n': return "\\n"; |
| 263 | case '\r': return "\\r"; |
| 264 | case '\t': return "\\t"; |
| 265 | default: return NULL; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | private static function isJsonEscaped($c) |
| 270 | { |
| 271 | // See RFC 4627. |
| 272 | return $c < chr($k_control_char_limit) || $c === "\"" || $c === "\\"; |
| 273 | } |
| 274 | |
| 275 | public static function escapedJson($value) |
| 276 | { |
| 277 | $escaped_value = ""; |
| 278 | $unescaped_run = ""; |
| 279 | for ($i = 0; $i < strlen($value); $i++) { |
| 280 | $c = $value[$i]; |
| 281 | // Handle escaping. |
| 282 | if (static::isJsonEscaped($c)) { |
| 283 | // Use a "nice" escape, like \n, if one exists for this |
| 284 | // character. |
| 285 | $escape = static::jsonNiceEscape($c); |
| 286 | if (is_null($escape)) { |
| 287 | $escape = "\\u00" . bin2hex($c); |
| 288 | } |
| 289 | if ($unescaped_run !== "") { |
| 290 | $escaped_value .= $unescaped_run; |
| 291 | $unescaped_run = ""; |
| 292 | } |
| 293 | $escaped_value .= $escape; |
| 294 | } else { |
| 295 | if ($unescaped_run === "") { |
| 296 | $unescaped_run .= $c; |
| 297 | } |
| 298 | } |
| 299 | } |
| 300 | $escaped_value .= $unescaped_run; |
| 301 | return $escaped_value; |
| 302 | } |
| 303 | |
| 304 | } |