MessagePtr JsonMsgDecoder::decodeMsg() {
this->checkNext('{');
this->checkNext('"');
std::string key = this->nextKey();
if(key != Message::MSG_HEADER) {
throw JsonException("invalid msg-header!");
}
this->checkNext(':');
this->checkNext('"');
std::string msgkey = this->nextKey();
this->checkNext(',');
this->checkNext('"');
key = this->nextKey();
if(key != Message::DATA_HEADER) {
throw JsonException("invalid data-header!");
}
this->checkNext(':');
JsonItemPtr o = this->nextValue();
this->checkNext('}');
return MessagePtr(new Message(Message::convertToMsgType(msgkey), o));
}
JsonValue JsonValue::read(const std::string &json, size_t &pos)
{
read_whitespace(json, pos);
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
switch (json[pos])
{
case '{':
return read_object(json, pos);
case '[':
return read_array(json, pos);
case '"':
return read_string(json, pos);
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return read_number(json, pos);
case 'f':
case 't':
return read_boolean(json, pos);
default:
throw JsonException("Unexpected character in JSON data");
}
}
void Collection::checkWritable (std::string const& label)
{
if (!enabled_)
throw JsonException (label + ": not enabled");
if (!writer_)
throw JsonException (label + ": not writable");
}
JsonStringPtr JsonDecoder::nextString() {
char c;
std::stringstream sb;
for(int i = 0; i < JsonDecoder::MAX_STRING_LENGTH; ++i) {
c = this->next();
switch(c) {
case '\n':
case '\r':
throw JsonException("invalid char");
case '\\':
c = this->next();
switch (c) {
case 'b':
sb << '\b';
break;
case 't':
sb << '\t';
break;
case 'n':
sb << '\n';
break;
case 'f':
sb << '\f';
break;
case 'r':
sb << '\r';
break;
case 'u':
//FIXME sb.append((char)Integer.parseInt(this->next(4), 16));
break;
case '"':
case '\\':
case '/':
sb << c;
break;
default:
throw JsonException("invalid escape-sequence");
}
break;
case '"':
return toJsonStringPtr(sb.str());
default:
sb << c;
break;
}
}
throw JsonException("maximum string-length reached!");
}
JsonObject::JsonObject(const QByteArray& json) {
QJsonParseError pe;
QJsonDocument doc = QJsonDocument::fromJson(json, &pe);
if (pe.error != QJsonParseError::NoError)
throw JsonException("cannot parse JSON: " + pe.errorString());
if ( ! doc.isObject()) {
throw JsonException("expected object");
}
o = doc.object();
}
JsonValue JsonValue::read_object(const std::string &json, size_t &pos)
{
JsonValue result(Type::object);
pos++;
read_whitespace(json, pos);
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
while (pos != json.length() && json[pos] != '}')
{
std::string key = read_string(json, pos);
read_whitespace(json, pos);
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
else if (json[pos] != ':')
throw JsonException("Unexpected character in JSON data");
pos++;
read_whitespace(json, pos);
result.members[key] = read(json, pos);
read_whitespace(json, pos);
if (pos == json.length())
{
throw JsonException("Unexpected end of JSON data");
}
else if (json[pos] == '}')
{
pos++;
break;
}
else if (json[pos] == ',')
{
pos++;
read_whitespace(json, pos);
}
else
{
throw JsonException("Unexpected character in JSON data");
}
}
return result;
}
JsonItemPtr JsonDecoder::parseValue(const std::string &s) {
if(!s.length()) {
throw JsonException("empty value");
}
if(boost::iequals(s, "true")) {
return toJsonBoolPtr(true);
}
if(boost::iequals(s, "false")) {
return toJsonBoolPtr(false);
}
if(boost::iequals(s, "null")) {
return toJsonNULLPtr();
}
char b = s[0];
try {
if((b >= '0' && b <= '9') || b == '-') {
if(
b == '0' &&
s.length() > 2 &&
(s[1] == 'x' || s[1] == 'X')
) {
return JsonItemPtr(
new JsonNumber<long int>(strtol(&(s.c_str()[2]), NULL, 16))
);
}
if(
s.find('.') != std::string::npos ||
s.find('e') != std::string::npos ||
s.find('E') != std::string::npos
) {
std::stringstream buffer;
double output;
buffer << s;
buffer >> output;
return toJsonNumberPtr(output);
}
return toJsonNumberPtr(atol(s.c_str()));
}
} catch(std::exception e) {
throw JsonException(
std::string("parsing, error could not determine value: <") +
std::string(e.what()) + ">"
);
}
std::cout << "---" << s << "---" << std::endl;
throw JsonException("parsing error, could not determine value" );
}
void JsonExpressFormater::WriteExpression(stringx name, ref<JsonNode> node, ref<StringBuilder> sb, int level)
{
switch (node->GetType())
{
case JSN_String:
WriteValue(name, '\"' + node->TextValue() + '\"', sb, level);
break;
case JSN_Integer:
WriteValue(name, Converter::ToString(node->IntValue()), sb, level);
break;
case JSN_Boolean:
WriteValue(name, node->BoolValue() ? __X("true") : __X("false"), sb, level);
break;
case JSN_None:
WriteValue(name, __X("null"), sb, level);
break;
case JSN_Dictionary:
WriteSubDictionary(name, node, sb, level);
break;
case JSN_NodeList:
WriteSubList(name, node, sb, level);
break;
default:
cdec_throw(JsonException(EC_JSON_NotImplemented, 0));
}
}
JsonArrayPtr JsonDecoder::nextArray() {
JsonArrayPtr v(new JsonArray());
char c = this->next();
if(c == ']') {
return v;
}
this->lastChar = c;
v->push_back(this->nextValue());
while(true) {
c = this->next();
switch(c) {
case ',':
v->push_back(this->nextValue());
break;
case ']':
return v;
default:
throw JsonException("expected ',' or ']'");
}
}
}
JsonValue JsonValue::read_number(const std::string &json, size_t &pos)
{
int start_pos = pos;
if (json[pos] == '-')
pos++;
while (pos < json.length() && json[pos] >= '0' && json[pos] <= '9')
pos++;
if (pos != json.length() && json[pos] == '.')
pos++;
while (pos < json.length() && json[pos] >= '0' && json[pos] <= '9')
pos++;
if (pos != json.length() && (json[pos] == 'e' || json[pos] == 'E'))
{
pos++;
if (pos != json.length() && (json[pos] == '+' || json[pos] == '-'))
pos++;
while (pos < json.length() && json[pos] >= '0' && json[pos] <= '9')
pos++;
}
int end_pos = pos;
std::string number_string = json.substr(start_pos, end_pos - start_pos);
if (number_string.empty())
throw JsonException("Unexpected character in JSON data");
double result = 0.0;
sscanf(number_string.c_str(), "%lf", &result);
return result;
}
JsonValue JsonValue::read_boolean(const std::string &json, size_t &pos)
{
if (json[pos] == 't')
{
if (pos + 4 > json.length() || memcmp(&json[pos], "true", 4) != 0)
throw JsonException("Unexpected character in JSON data");
pos += 4;
return JsonValue::boolean(true);
}
else
{
if (pos + 5 > json.length() || memcmp(&json[pos], "false", 5) != 0)
throw JsonException("Unexpected character in JSON data");
pos += 5;
return JsonValue::boolean(false);
}
}
cJSON *IncludeResolver::readToJson(const std::string &jsonFileName)
{
std::ifstream fin((m_path + jsonFileName).c_str());
if (!fin)
throw JsonException("Error Json Referenced File not present " + m_path + jsonFileName);
std::stringstream buffer;
buffer << fin.rdbuf();
std::string str = buffer.str();
return cJSON_Parse(str.c_str());
}
JsonObjectPtr JsonDecoder::nextObject() {
JsonObjectPtr map(new JsonObject());
std::string key;
char c;
for(int i = 0; i < JsonDecoder::MAX_STRING_LENGTH; ++i) {
c = this->next(!this->strict);
switch(c) {
case '}':
return map;
case '"':
key = this->nextKey();
break;
default:
throw JsonException("invalid key");
}
this->checkNext(':');
if(map->find(key) != map->end()) {
throw JsonException(std::string("duplicate key <") + key + ">");
}
(*map)[key] = this->nextValue();
switch(this->next(!this->strict)) {
case ',':
c = this->next(!this->strict);
if(c == '}'){
throw JsonException("expected new key");
}
this->lastChar = c;
break;
case '}':
return map;
default:
throw JsonException("expected a ',' or '}'");
}
}
throw JsonException("maximum string-length reached!");
}
void JsonDecoder::checkNext(const char x) {
char c = this->next(!this->strict);
if(c != x) {
throw JsonException(
std::string("expected '") +
std::string(1, x) + "' found '" +
std::string(1, c) + "'!"
);
}
}
std::string JsonDecoder::nextKey() {
std::stringstream sb;
for(int i = 0; i < JsonDecoder::MAX_STRING_LENGTH; ++i) {
char c = this->next();
if(isspace(c) || !(isalnum(c) || c == '_' || c == '"')) {
throw JsonException("key contains invalide char!");
}
if(c == '"') {
std::string s = sb.str();
boost::algorithm::trim(s);
if(s.length() == 0) {
throw JsonException("key is empty");
}
return s;
}
sb << c;
}
throw JsonException("maximum string-length reached!");
}
JsonValue JsonValue::read_array(const std::string &json, size_t &pos)
{
JsonValue result(Type::array);
pos++;
read_whitespace(json, pos);
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
while (json[pos] != ']')
{
read_whitespace(json, pos);
result.items.push_back(read(json, pos));
read_whitespace(json, pos);
if (pos == json.length())
{
throw JsonException("Unexpected end of JSON data");
}
else if (json[pos] == ']')
{
break;
}
else if (json[pos] == ',')
{
pos++;
read_whitespace(json, pos);
}
else
{
throw JsonException("Unexpected character in JSON data");
}
}
pos++;
return result;
}
JsonItemPtr JsonDecoder::nextJValue() {
char c;
std::stringstream sb;
for(int i = 0; i < JsonDecoder::MAX_STRING_LENGTH; ++i) {
c = this->next();
if(c == ',' || c == ']' || c == '}') {
this->lastChar = c;
return this->parseValue(sb.str());
}
if(
(c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') ||
c == '-' || c == '+'
) {
sb << c;
continue;
}
throw JsonException("parsing error");
}
throw JsonException("maximum string-length reached!");
}
char JsonDecoder::next(bool ignoreWhitespace) {
if(this->lastChar != 0) {
char t = this->lastChar;
this->lastChar = 0;
return t;
}
char c;
do {
c = this->read();
} while(::isspace(c) && ignoreWhitespace);
if(c == -1 || c == 0) {
throw JsonException("input stream corrupted!");
}
return c;
}
std::string JsonValue::read_string(const std::string &json, size_t &pos)
{
pos++;
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
std::string result;
while (true)
{
if (pos == json.length())
{
throw JsonException("Unexpected end of JSON data");
}
else if (json[pos] == '"')
{
break;
}
else if (json[pos] == '\\')
{
pos++;
if (pos == json.length())
throw JsonException("Unexpected end of JSON data");
unsigned codepoint;
switch (json[pos])
{
case '"':
result.push_back('"');
break;
case '\\':
result.push_back('\\');
break;
case '/':
result.push_back('/');
break;
case 'b':
result.push_back('\b');
break;
case 'f':
result.push_back('\f');
break;
case 'n':
result.push_back('\n');
break;
case 'r':
result.push_back('\r');
break;
case 't':
result.push_back('\t');
break;
case 'u':
if (pos + 5 > json.length())
throw JsonException("Unexpected end of JSON data");
codepoint = 0;
for (int i = 0; i < 4; i++)
{
char c = json[pos + 1 + i];
if (c >= '0' && c <= '9')
{
codepoint <<= 4;
codepoint |= c - '0';
}
else if (c >= 'a' && c <= 'f')
{
codepoint <<= 4;
codepoint |= c - 'a' + 10;
}
else if (c >= 'A' && c <= 'F')
{
codepoint <<= 4;
codepoint |= c - 'A' + 10;
}
else
{
throw JsonException("Invalid unicode escape");
}
}
result += StringHelp::unicode_to_utf8(codepoint);
pos += 4;
break;
}
pos++;
}
else
{
result.push_back(json[pos]);
pos++;
}
}
pos++;
return result;
}
DefinitionsPtr JsonSchema::readRef(std::string m_ref)
{
std::string delimiter1 = "#";
std::string delimiter2 = "/";
std::string fileName;
if (! m_ref.empty())
{
std::size_t pos = m_ref.find(delimiter1);
if ( (pos = m_ref.find(delimiter1)) != std::string::npos)
{
fileName = m_ref.substr(0, pos);
m_ref.erase(0, pos);
}
m_ref.erase(0, delimiter1 .length());
std::string defName;
if (! m_ref.empty())
{
m_ref.erase(0, delimiter2 .length());
std::string keyName;
if ( (pos = m_ref.find(delimiter2)) != std::string::npos)
{
keyName = m_ref.substr(0, pos);
m_ref.erase(0, pos + delimiter2.length());
if (keyName == "definitions")
{
if ( (pos = m_ref.find(delimiter2)) != std::string::npos)
{
defName = m_ref.substr(0, pos);
}
else if (! m_ref.empty())
{
defName = m_ref;
}
}
}
}
if (!fileName.empty())
{
if (!(defName.empty()))
{
cJSON *m_json = m_includeResolver->readToJson(fileName);
JsonSchemaPtr Refparser = std::make_shared<JsonSchema>(m_json, m_includeResolver);
DefinitionsPtr definition = Refparser->getDefinition(defName);
if (definition == nullptr)
throw JsonException("Definition Name Incorrect");
return definition;
}
}
else
{
if (!(defName.empty()))
{
if (getDefinition(defName) == nullptr)
throw JsonException("Definition Name Incorrect");
return getDefinition(defName);
}
}
}
throw JsonException("Definition Name Empty");
return nullptr;
}
void JsonObject::checkContains(const QString& key) const {
if ( ! contains(key))
throw JsonException("expected value for " + key);
}
void wrongType(const QString& type, const QString& key) {
throw JsonException("expected " + type + " for " + key);
}
