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use crate::datatype::*;
use crate::individual::*;
use crate::parser::*;
use cbor::types::Type;
use cbor::{Config, Decoder};
use std::io::Cursor;
#[derive(PartialEq, Debug)]
pub enum TagId {
None = 255,
TextRu = 42,
TextEn = 43,
StandardDateTime = 0,
EpochDateTime = 1,
PositiveBigint = 2,
NegativeBigint = 3,
DecimalFraction = 4,
CborEncoded = 24,
URI = 32,
}
pub fn parse_cbor(raw: &mut RawObj) -> Result<String, i8> {
if raw.data.is_empty() || raw.raw_type != RawType::CBOR {
return Err(-1);
}
let input = Cursor::new(raw.data.to_owned());
let mut config = Config::default();
if raw.data.len() > 200_000 {
config.max_len_array = 10000;
}
let mut d = Decoder::new(config, input);
if let Ok(len) = d.object() {
raw.len_predicates = len as u32;
if let Ok(type_info) = d.typeinfo() {
if let Ok(predicate) = d._text(&type_info) {
if predicate == "@" {
if let Ok(type_info) = d.typeinfo() {
if let Ok(uri) = d._text(&type_info) {
raw.cur = d.into_reader().position();
return Ok(uri);
}
}
} else {
return Err(-1);
}
}
}
}
Err(-1)
}
pub fn parse_cbor_to_predicate(expect_predicate: &str, iraw: &mut Individual) -> bool {
if iraw.raw.cur >= iraw.raw.data.len() as u64 {
return false;
}
let mut is_found = false;
let mut cur = Cursor::new(iraw.raw.data.as_slice());
cur.set_position(iraw.raw.cur);
let mut config = Config::default();
let len = iraw.raw.data.len();
if len > 200_000 {
config.max_len_array = 10000;
}
let mut d = Decoder::new(config, cur);
for _ in iraw.raw.cur_predicates..iraw.raw.len_predicates {
if let Ok(type_info) = d.typeinfo() {
if let Ok(predicate) = d._text(&type_info) {
if predicate == expect_predicate {
is_found = true;
}
if !add_value(&predicate, &mut d, &mut iraw.obj) {
return false;
}
}
}
if is_found {
iraw.raw.cur = d.into_reader().position();
return true;
}
}
false
}
fn add_value(predicate: &str, d: &mut Decoder<Cursor<&[u8]>>, indv: &mut IndividualObj) -> bool {
if let Ok((type_info, tag)) = d.typeinfo_and_tag() {
match type_info.0 {
Type::Bool => {
if let Ok(b) = d._bool(&type_info) {
indv.add_bool(&predicate, b);
}
}
Type::Bytes => {
if let Ok(t) = d._text(&type_info) {
if tag == TagId::URI as u64 {
indv.add_uri(&predicate, &t);
} else {
let mut lang = Lang::NONE;
if tag == TagId::TextRu as u64 || tag == TagId::TextEn as u64 {
if tag == TagId::TextRu as u64 {
lang = Lang::RU;
} else if tag == TagId::TextEn as u64 {
lang = Lang::EN;
}
}
indv.add_string(predicate, &t, lang);
}
}
}
Type::Text => {
if let Ok(t) = d._text(&type_info) {
if tag == TagId::URI as u64 {
indv.add_uri(&predicate, &t);
} else {
let mut lang = Lang::NONE;
if tag == TagId::TextRu as u64 || tag == TagId::TextEn as u64 {
if tag == TagId::TextRu as u64 {
lang = Lang::RU;
} else if tag == TagId::TextEn as u64 {
lang = Lang::EN;
}
}
indv.add_string(predicate, &t, lang);
}
}
}
Type::UInt8 | Type::Int8 | Type::UInt16 | Type::Int16 | Type::UInt32 | Type::Int32 | Type::Int64 | Type::UInt64 => {
if let Ok(mut i) = d._i64(&type_info) {
if i < 0 {
i += 1;
}
if tag == TagId::EpochDateTime as u64 {
indv.add_datetime(&predicate, i);
} else {
indv.add_integer(&predicate, i);
}
}
}
Type::Array => {
if let Ok(len) = d._array(&type_info) {
if tag == TagId::DecimalFraction as u64 {
if let Ok((type_info, _tag)) = d.typeinfo_and_tag() {
if let Ok(mut m) = d._i64(&type_info) {
if m < 0 {
m += 1;
}
if let Ok((type_info, _tag)) = d.typeinfo_and_tag() {
if let Ok(mut e) = d._i64(&type_info) {
if e < 0 {
e += 1;
}
indv.add_decimal_d(&predicate, m as i64, e);
}
}
}
}
} else {
for _x in 0..len {
add_value(predicate, d, indv);
}
}
} else {
return false;
}
}
_ => {
error!("parse cbor:unknown type {:?}, predicate={}, id={}", type_info.0, predicate, indv.uri);
return false;
}
}
}
true
}