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Classes | Functions
fl_json_message_codec.cc File Reference
`#include "flutter/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h"`
`#include <gmodule.h>`
`#include <cstring>`
`#include "rapidjson/reader.h"`
`#include "rapidjson/writer.h"`

Go to the source code of this file.

## Classes
struct | _FlJsonMessageCodec
struct | FlValueHandler

## Functions
| G_DEFINE_TYPE (FlJsonMessageCodec, fl_json_message_codec, fl_message_codec_get_type()) static gboolean write_value(rapidjson
static GBytes * | fl_json_message_codec_encode_message (FlMessageCodec *codec, FlValue *message, GError **error)
static FlValue * | fl_json_message_codec_decode_message (FlMessageCodec *codec, GBytes *message, GError **error)
static void | fl_json_message_codec_class_init (FlJsonMessageCodecClass *klass)
static void | fl_json_message_codec_init (FlJsonMessageCodec *self)
G_MODULE_EXPORT FlJsonMessageCodec * | fl_json_message_codec_new ()
G_MODULE_EXPORT gchar * | fl_json_message_codec_encode (FlJsonMessageCodec *codec, FlValue *value, GError **error)
G_MODULE_EXPORT FlValue * | fl_json_message_codec_decode (FlJsonMessageCodec *codec, const gchar *text, GError **error)

## Function Documentation

## ◆ fl_json_message_codec_class_init()

static void fl_json_message_codec_class_init | ( | FlJsonMessageCodecClass * | klass | ) |
| static

Definition at line 297 of file fl_json_message_codec.cc.

297 {
298 FL_MESSAGE_CODEC_CLASS(klass)->encode_message =
299 fl_json_message_codec_encode_message;
300 FL_MESSAGE_CODEC_CLASS(klass)->decode_message =
301 fl_json_message_codec_decode_message;
302 }

References fl_json_message_codec_decode_message(), and fl_json_message_codec_encode_message().

## ◆ fl_json_message_codec_decode()

G_MODULE_EXPORT FlValue* fl_json_message_codec_decode | ( | FlJsonMessageCodec * | codec,
|  | const gchar * | text,
|  | GError ** | error
| ) |  |

fl_json_message_codec_decode: @codec: an #FlJsonMessageCodec. @text: UTF-8 text in JSON format. @error: (allow-none): #GError location to store the error occurring, or NULL.

Decodes a value from a JSON string.

Returns: an FlValue or NULL on error.

Definition at line 326 of file fl_json_message_codec.cc.

328 {
329 g_return_val_if_fail(FL_IS_JSON_CODEC(codec), nullptr);
330
331 g_autoptr(GBytes) data = g_bytes_new_static(text, strlen(text));
332 g_autoptr(FlValue) value = fl_json_message_codec_decode_message(
333 FL_MESSAGE_CODEC(codec), data, error);
334 if (value == nullptr) {
335 return nullptr;
336 }
337
338 return fl_value_ref(value);
339 }

References error, fl_json_message_codec_decode_message(), fl_value_ref(), and value.

Referenced by decode_error_message(), decode_message(), and TEST().

## ◆ fl_json_message_codec_decode_message()

static FlValue* fl_json_message_codec_decode_message | ( | FlMessageCodec * | codec,
|  | GBytes * | message,
|  | GError ** | error
| ) |  |
| static

Definition at line 258 of file fl_json_message_codec.cc.

260 {
261 gsize data_length;
262 const gchar* data =
263 static_cast<const char*>(g_bytes_get_data(message, &data_length));
264 if (!g_utf8_validate(data, data_length, nullptr)) {
265 g_set_error(error, FL_JSON_MESSAGE_CODEC_ERROR,
266 FL_JSON_MESSAGE_CODEC_ERROR_INVALID_UTF8,
267 "Message is not valid UTF8");
268 return nullptr;
269 }
270
271 FlValueHandler handler;
272 rapidjson::Reader reader;
273 rapidjson::MemoryStream ss(data, data_length);
274 if (!reader.Parse(ss, handler)) {
275 if (handler.error != nullptr) {
276 g_propagate_error(error, handler.error);
277 handler.error = nullptr;
278 } else {
279 g_set_error(error, FL_JSON_MESSAGE_CODEC_ERROR,
280 FL_JSON_MESSAGE_CODEC_ERROR_INVALID_JSON,
281 "Message is not valid JSON");
282 }
283 return nullptr;
284 }
285
286 FlValue* value = handler.get_head();
287 if (value == nullptr) {
288 g_set_error(error, FL_JSON_MESSAGE_CODEC_ERROR,
289 FL_JSON_MESSAGE_CODEC_ERROR_INVALID_JSON,
290 "Message is not valid JSON");
291 return nullptr;
292 }
293
294 return fl_value_ref(value);
295 }

References error, FlValueHandler::error, FL_JSON_MESSAGE_CODEC_ERROR, FL_JSON_MESSAGE_CODEC_ERROR_INVALID_JSON, FL_JSON_MESSAGE_CODEC_ERROR_INVALID_UTF8, fl_value_ref(), FlValueHandler::get_head(), and value.

Referenced by fl_json_message_codec_class_init(), and fl_json_message_codec_decode().

## ◆ fl_json_message_codec_encode()

G_MODULE_EXPORT gchar* fl_json_message_codec_encode | ( | FlJsonMessageCodec * | codec,
|  | FlValue * | value,
|  | GError ** | error
| ) |  |

fl_json_message_codec_encode: @codec: an #FlJsonMessageCodec. @value: value to encode. @error: (allow-none): #GError location to store the error occurring, or NULL.

Encodes a value to a JSON string.

Returns: a JSON representation of this value or NULL on error.

Definition at line 311 of file fl_json_message_codec.cc.

313 {
314 g_return_val_if_fail(FL_IS_JSON_CODEC(codec), nullptr);
315
316 rapidjson::StringBuffer buffer;
317 rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
318
319 if (!write_value(writer, value, error)) {
320 return nullptr;
321 }
322
323 return g_strdup(buffer.GetString());
324 }

References buffer, error, and value.

Referenced by encode_error_message(), encode_message(), and TEST().

## ◆ fl_json_message_codec_encode_message()

static GBytes* fl_json_message_codec_encode_message | ( | FlMessageCodec * | codec,
|  | FlValue * | message,
|  | GError ** | error
| ) |  |
| static

Definition at line 243 of file fl_json_message_codec.cc.

245 {
246 rapidjson::StringBuffer buffer;
247 rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
248
249 if (!write_value(writer, message, error)) {
250 return nullptr;
251 }
252
253 const gchar* text = buffer.GetString();
254 return g_bytes_new(text, strlen(text));
255 }

References buffer, and error.

Referenced by fl_json_message_codec_class_init().

## ◆ fl_json_message_codec_init()

static void fl_json_message_codec_init | ( | FlJsonMessageCodec * | self | ) |
| static

Definition at line 304 of file fl_json_message_codec.cc.

304 {}

## ◆ fl_json_message_codec_new()

G_MODULE_EXPORT FlJsonMessageCodec* fl_json_message_codec_new | ( |  | ) |

Definition at line 306 of file fl_json_message_codec.cc.

306 {
307 return static_cast<FlJsonMessageCodec*>(
308 g_object_new(fl_json_message_codec_get_type(), nullptr));
309 }

Referenced by decode_error_message(), decode_message(), encode_error_message(), encode_message(), fl_json_method_codec_init(), fl_key_channel_responder_new(), fl_settings_plugin_new(), MATCHER_P2(), and TEST().

## ◆ G_DEFINE_TYPE()

G_DEFINE_TYPE | ( | FlJsonMessageCodec | ,
|  | fl_json_message_codec | ,
|  | fl_message_codec_get_type() |
| ) |  |

Definition at line 20 of file fl_json_message_codec.cc.

27 {
28 if (value == nullptr) {
29 writer.Null();
30 return TRUE;
31 }
32
33 switch (fl_value_get_type(value)) {
34 case FL_VALUE_TYPE_NULL:
35 writer.Null();
36 break;
37 case FL_VALUE_TYPE_BOOL:
38 writer.Bool(fl_value_get_bool(value));
39 break;
40 case FL_VALUE_TYPE_INT:
41 writer.Int64(fl_value_get_int(value));
42 break;
43 case FL_VALUE_TYPE_FLOAT:
44 writer.Double(fl_value_get_float(value));
45 break;
46 case FL_VALUE_TYPE_STRING:
47 writer.String(fl_value_get_string(value));
48 break;
49 case FL_VALUE_TYPE_UINT8_LIST: {
50 writer.StartArray();
51 const uint8_t* data = fl_value_get_uint8_list(value);
52 for (size_t i = 0; i < fl_value_get_length(value); i++) {
53 writer.Int(data[i]);
54 }
55 writer.EndArray();
56 break;
57 }
58 case FL_VALUE_TYPE_INT32_LIST: {
59 writer.StartArray();
60 const int32_t* data = fl_value_get_int32_list(value);
61 for (size_t i = 0; i < fl_value_get_length(value); i++) {
62 writer.Int(data[i]);
63 }
64 writer.EndArray();
65 break;
66 }
67 case FL_VALUE_TYPE_INT64_LIST: {
68 writer.StartArray();
69 const int64_t* data = fl_value_get_int64_list(value);
70 for (size_t i = 0; i < fl_value_get_length(value); i++) {
71 writer.Int64(data[i]);
72 }
73 writer.EndArray();
74 break;
75 }
76 case FL_VALUE_TYPE_FLOAT_LIST: {
77 writer.StartArray();
78 const double* data = fl_value_get_float_list(value);
79 for (size_t i = 0; i < fl_value_get_length(value); i++) {
80 writer.Double(data[i]);
81 }
82 writer.EndArray();
83 break;
84 }
85 case FL_VALUE_TYPE_LIST: {
86 writer.StartArray();
87 for (size_t i = 0; i < fl_value_get_length(value); i++) {
88 if (!write_value(writer, fl_value_get_list_value(value, i), error)) {
89 return FALSE;
90 }
91 }
92 writer.EndArray();
93 break;
94 }
95 case FL_VALUE_TYPE_MAP: {
96 writer.StartObject();
97 for (size_t i = 0; i < fl_value_get_length(value); i++) {
98 FlValue* key = fl_value_get_map_key(value, i);
99 if (fl_value_get_type(key) != FL_VALUE_TYPE_STRING) {
100 g_set_error(error, FL_JSON_MESSAGE_CODEC_ERROR,
101 FL_JSON_MESSAGE_CODEC_ERROR_INVALID_OBJECT_KEY_TYPE,
102 "Invalid object key type");
103 return FALSE;
104 }
105 writer.Key(fl_value_get_string(key));
106 if (!write_value(writer, fl_value_get_map_value(value, i), error)) {
107 return FALSE;
108 }
109 }
110 writer.EndObject();
111 break;
112 }
113 default:
114 g_set_error(error, FL_MESSAGE_CODEC_ERROR,
115 FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE,
116 "Unexpected FlValue type %d", fl_value_get_type(value));
117 return FALSE;
118 }
119
120 return TRUE;
121 }

References error, FL_JSON_MESSAGE_CODEC_ERROR, FL_JSON_MESSAGE_CODEC_ERROR_INVALID_OBJECT_KEY_TYPE, FL_MESSAGE_CODEC_ERROR, FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE, fl_value_get_bool(), fl_value_get_float(), fl_value_get_float_list(), fl_value_get_int(), fl_value_get_int32_list(), fl_value_get_int64_list(), fl_value_get_length(), fl_value_get_list_value(), fl_value_get_map_key(), fl_value_get_map_value(), fl_value_get_string(), fl_value_get_type(), fl_value_get_uint8_list(), FL_VALUE_TYPE_BOOL, FL_VALUE_TYPE_FLOAT, FL_VALUE_TYPE_FLOAT_LIST, FL_VALUE_TYPE_INT, FL_VALUE_TYPE_INT32_LIST, FL_VALUE_TYPE_INT64_LIST, FL_VALUE_TYPE_LIST, FL_VALUE_TYPE_MAP, FL_VALUE_TYPE_NULL, FL_VALUE_TYPE_STRING, FL_VALUE_TYPE_UINT8_LIST, TRUE, and value.

FL_JSON_MESSAGE_CODEC_ERROR_INVALID_UTF8
@ FL_JSON_MESSAGE_CODEC_ERROR_INVALID_UTF8
Definition: fl_json_message_codec.h:31
fl_value_get_int32_list
const G_MODULE_EXPORT int32_t * fl_value_get_int32_list(FlValue *self)
Definition: fl_value.cc:696
FL_VALUE_TYPE_UINT8_LIST
@ FL_VALUE_TYPE_UINT8_LIST
Definition: fl_value.h:70
FL_VALUE_TYPE_MAP
@ FL_VALUE_TYPE_MAP
Definition: fl_value.h:75
FL_JSON_MESSAGE_CODEC_ERROR_INVALID_OBJECT_KEY_TYPE
@ FL_JSON_MESSAGE_CODEC_ERROR_INVALID_OBJECT_KEY_TYPE
Definition: fl_json_message_codec.h:33
fl_value_get_float_list
const G_MODULE_EXPORT double * fl_value_get_float_list(FlValue *self)
Definition: fl_value.cc:717
FlValue
typedefG_BEGIN_DECLS struct _FlValue FlValue
Definition: fl_value.h:42
FL_VALUE_TYPE_LIST
@ FL_VALUE_TYPE_LIST
Definition: fl_value.h:74
FlValueHandler::get_head
FlValue * get_head()
Definition: fl_json_message_codec.cc:147
fl_value_get_bool
G_MODULE_EXPORT bool fl_value_get_bool(FlValue *self)
Definition: fl_value.cc:661
fl_value_get_uint8_list
const G_MODULE_EXPORT uint8_t * fl_value_get_uint8_list(FlValue *self)
Definition: fl_value.cc:689
fl_value_get_string
const G_MODULE_EXPORT gchar * fl_value_get_string(FlValue *self)
Definition: fl_value.cc:682
FL_VALUE_TYPE_NULL
@ FL_VALUE_TYPE_NULL
Definition: fl_value.h:65
fl_value_get_int
G_MODULE_EXPORT int64_t fl_value_get_int(FlValue *self)
Definition: fl_value.cc:668
fl_value_ref
G_MODULE_EXPORT FlValue * fl_value_ref(FlValue *self)
Definition: fl_value.cc:394
fl_value_get_type
G_MODULE_EXPORT FlValueType fl_value_get_type(FlValue *self)
Definition: fl_value.cc:466
fl_value_get_list_value
G_MODULE_EXPORT FlValue * fl_value_get_list_value(FlValue *self, size_t index)
Definition: fl_value.cc:776
FL_VALUE_TYPE_STRING
@ FL_VALUE_TYPE_STRING
Definition: fl_value.h:69
TRUE
return TRUE
Definition: fl_pixel_buffer_texture_test.cc:53
fl_json_message_codec_encode_message
static GBytes * fl_json_message_codec_encode_message(FlMessageCodec *codec, FlValue *message, GError **error)
Definition: fl_json_message_codec.cc:243
fl_value_get_float
G_MODULE_EXPORT double fl_value_get_float(FlValue *self)
Definition: fl_value.cc:675
fl_value_get_length
G_MODULE_EXPORT size_t fl_value_get_length(FlValue *self)
Definition: fl_value.cc:724
FL_VALUE_TYPE_INT64_LIST
@ FL_VALUE_TYPE_INT64_LIST
Definition: fl_value.h:72
FL_VALUE_TYPE_INT
@ FL_VALUE_TYPE_INT
Definition: fl_value.h:67
fl_json_message_codec_decode_message
static FlValue * fl_json_message_codec_decode_message(FlMessageCodec *codec, GBytes *message, GError **error)
Definition: fl_json_message_codec.cc:258
error
const uint8_t uint32_t uint32_t GError ** error
Definition: fl_pixel_buffer_texture_test.cc:40
FlValueHandler
Definition: fl_json_message_codec.cc:124
FL_VALUE_TYPE_FLOAT_LIST
@ FL_VALUE_TYPE_FLOAT_LIST
Definition: fl_value.h:73
FL_JSON_MESSAGE_CODEC_ERROR
#define FL_JSON_MESSAGE_CODEC_ERROR
Definition: fl_json_message_codec.h:27
buffer
static const uint8_t buffer[]
Definition: fl_pixel_buffer_texture_test.cc:44
FL_VALUE_TYPE_FLOAT
@ FL_VALUE_TYPE_FLOAT
Definition: fl_value.h:68
FL_VALUE_TYPE_INT32_LIST
@ FL_VALUE_TYPE_INT32_LIST
Definition: fl_value.h:71
FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE
@ FL_MESSAGE_CODEC_ERROR_UNSUPPORTED_TYPE
Definition: fl_message_codec.h:37
FlValueHandler::error
GError * error
Definition: fl_json_message_codec.cc:127
FL_JSON_MESSAGE_CODEC_ERROR_INVALID_JSON
@ FL_JSON_MESSAGE_CODEC_ERROR_INVALID_JSON
Definition: fl_json_message_codec.h:32
fl_value_get_map_key
G_MODULE_EXPORT FlValue * fl_value_get_map_key(FlValue *self, size_t index)
Definition: fl_value.cc:784
fl_value_get_int64_list
const G_MODULE_EXPORT int64_t * fl_value_get_int64_list(FlValue *self)
Definition: fl_value.cc:703
FL_VALUE_TYPE_BOOL
@ FL_VALUE_TYPE_BOOL
Definition: fl_value.h:66
value
uint8_t value
Definition: fl_standard_message_codec.cc:36
fl_value_get_map_value
G_MODULE_EXPORT FlValue * fl_value_get_map_value(FlValue *self, size_t index)
Definition: fl_value.cc:792
FL_MESSAGE_CODEC_ERROR
#define FL_MESSAGE_CODEC_ERROR
Definition: fl_message_codec.h:30