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use std::io::Write;
use itertools::PutBack;
use ::{
CodePair,
DxfError,
DxfResult,
Point,
Vector,
};
use ::enums::AcadVersion;
use ::helper_functions::*;
use ::code_pair_writer::CodePairWriter;
pub(crate) const XDATA_APPLICATIONNAME: i32 = 1001;
const XDATA_STRING: i32 = 1000;
const XDATA_CONTROLGROUP: i32 = 1002;
const XDATA_LAYER: i32 = 1003;
const XDATA_BINARYDATA: i32 = 1004;
const XDATA_HANDLE: i32 = 1005;
const XDATA_THREEREALS: i32 = 1010;
const XDATA_WORLDSPACEPOSITION: i32 = 1011;
const XDATA_WORLDSPACEDISPLACEMENT: i32 = 1012;
const XDATA_WORLDDIRECTION: i32 = 1013;
const XDATA_REAL: i32 = 1040;
const XDATA_DISTANCE: i32 = 1041;
const XDATA_SCALEFACTOR: i32 = 1042;
const XDATA_INTEGER: i32 = 1070;
const XDATA_LONG: i32 = 1071;
#[derive(Clone, Debug)]
#[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
pub struct XData {
pub application_name: String,
pub items: Vec<XDataItem>,
}
#[derive(Clone, Debug, PartialEq)]
#[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
pub enum XDataItem {
Str(String),
ControlGroup(Vec<XDataItem>),
LayerName(String),
BinaryData(Vec<u8>),
Handle(u32),
ThreeReals(f64, f64, f64),
WorldSpacePosition(Point),
WorldSpaceDisplacement(Point),
WorldDirection(Vector),
Real(f64),
Distance(f64),
ScaleFactor(f64),
Integer(i16),
Long(i32),
}
impl XData {
pub(crate) fn read_item<I>(application_name: String, iter: &mut PutBack<I>) -> DxfResult<XData>
where I: Iterator<Item = DxfResult<CodePair>> {
let mut xdata = XData { application_name: application_name, items: vec![] };
loop {
let pair = match iter.next() {
Some(Ok(pair @ CodePair { code: 0, .. })) => {
iter.put_back(Ok(pair));
return Ok(xdata);
},
Some(Ok(pair)) => pair,
Some(Err(e)) => return Err(e),
None => return Ok(xdata),
};
if pair.code == XDATA_APPLICATIONNAME || pair.code < XDATA_STRING {
break;
}
xdata.items.push(XDataItem::read_item(&pair, iter)?);
}
Ok(xdata)
}
pub(crate) fn write<T>(&self, version: &AcadVersion, writer: &mut CodePairWriter<T>) -> DxfResult<()>
where T: Write {
if version >= &AcadVersion::R2000 {
writer.write_code_pair(&CodePair::new_string(XDATA_APPLICATIONNAME, &self.application_name))?;
for item in &self.items {
item.write(writer)?;
}
}
Ok(())
}
}
impl XDataItem {
fn read_item<I>(pair: &CodePair, iter: &mut PutBack<I>) -> DxfResult<XDataItem>
where I: Iterator<Item = DxfResult<CodePair>> {
loop {
match pair.code {
XDATA_STRING => return Ok(XDataItem::Str(pair.assert_string()?)),
XDATA_CONTROLGROUP => {
let mut items = vec![];
loop {
let pair = match iter.next() {
Some(Ok(pair)) => {
if pair.code < XDATA_STRING {
return Err(DxfError::UnexpectedCodePair(pair, String::from("expected XDATA item")));
}
pair
}
Some(Err(e)) => return Err(e),
None => return Err(DxfError::UnexpectedEndOfInput),
};
if pair.code == XDATA_CONTROLGROUP && pair.assert_string()? == "}" {
break;
}
items.push(XDataItem::read_item(&pair, iter)?);
}
return Ok(XDataItem::ControlGroup(items));
},
XDATA_LAYER => return Ok(XDataItem::LayerName(pair.assert_string()?)),
XDATA_BINARYDATA => {
let mut data = vec![];
parse_hex_string(&pair.assert_string()?, &mut data, pair.offset)?;
return Ok(XDataItem::BinaryData(data));
},
XDATA_HANDLE => return Ok(XDataItem::Handle(pair.as_handle()?)),
XDATA_THREEREALS => return Ok(XDataItem::ThreeReals(pair.assert_f64()?, XDataItem::read_double(iter, pair.code)?, XDataItem::read_double(iter, pair.code)?)),
XDATA_WORLDSPACEDISPLACEMENT => return Ok(XDataItem::WorldSpaceDisplacement(XDataItem::read_point(iter, pair.assert_f64()?, pair.code)?)),
XDATA_WORLDSPACEPOSITION => return Ok(XDataItem::WorldSpacePosition(XDataItem::read_point(iter, pair.assert_f64()?, pair.code)?)),
XDATA_WORLDDIRECTION => return Ok(XDataItem::WorldDirection(XDataItem::read_vector(iter, pair.assert_f64()?, pair.code)?)),
XDATA_REAL => return Ok(XDataItem::Real(pair.assert_f64()?)),
XDATA_DISTANCE => return Ok(XDataItem::Distance(pair.assert_f64()?)),
XDATA_SCALEFACTOR => return Ok(XDataItem::ScaleFactor(pair.assert_f64()?)),
XDATA_INTEGER => return Ok(XDataItem::Integer(pair.assert_i16()?)),
XDATA_LONG => return Ok(XDataItem::Long(pair.assert_i32()?)),
_ => return Err(DxfError::UnexpectedCode(pair.code, pair.offset)),
}
}
}
fn read_double<T>(iter: &mut PutBack<T>, expected_code: i32) -> DxfResult<f64>
where T: Iterator<Item = DxfResult<CodePair>> {
match iter.next() {
Some(Ok(ref pair)) if pair.code == expected_code => return Ok(pair.assert_f64()?),
Some(Ok(pair)) => return Err(DxfError::UnexpectedCode(pair.code, pair.offset)),
Some(Err(e)) => return Err(e),
None => return Err(DxfError::UnexpectedEndOfInput),
}
}
fn read_point<I>(iter: &mut PutBack<I>, first: f64, expected_code: i32) -> DxfResult<Point>
where I: Iterator<Item = DxfResult<CodePair>> {
Ok(Point::new(first, XDataItem::read_double(iter, expected_code)?, XDataItem::read_double(iter, expected_code)?))
}
fn read_vector<I>(iter: &mut PutBack<I>, first: f64, expected_code: i32) -> DxfResult<Vector>
where I: Iterator<Item = DxfResult<CodePair>> {
Ok(Vector::new(first, XDataItem::read_double(iter, expected_code)?, XDataItem::read_double(iter, expected_code)?))
}
pub(crate) fn write<T>(&self, writer: &mut CodePairWriter<T>) -> DxfResult<()>
where T: Write {
match self {
&XDataItem::Str(ref s) => { writer.write_code_pair(&CodePair::new_string(XDATA_STRING, s))?; },
&XDataItem::ControlGroup(ref items) => {
writer.write_code_pair(&CodePair::new_str(XDATA_CONTROLGROUP, "{"))?;
for item in &items[..] {
item.write(writer)?;
}
writer.write_code_pair(&CodePair::new_str(XDATA_CONTROLGROUP, "}"))?;
},
&XDataItem::LayerName(ref l) => { writer.write_code_pair(&CodePair::new_string(XDATA_LAYER, l))?; },
&XDataItem::BinaryData(ref data) => {
let mut line = String::new();
for b in data {
line.push_str(&format!("{:02X}", b));
}
writer.write_code_pair(&CodePair::new_string(XDATA_BINARYDATA, &line))?;
},
&XDataItem::Handle(h) => { writer.write_code_pair(&CodePair::new_string(XDATA_HANDLE, &as_handle(h)))?; },
&XDataItem::ThreeReals(x, y, z) => {
writer.write_code_pair(&CodePair::new_f64(XDATA_THREEREALS, x))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_THREEREALS, y))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_THREEREALS, z))?;
},
&XDataItem::WorldSpacePosition(ref p) => {
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEPOSITION, p.x))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEPOSITION, p.y))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEPOSITION, p.z))?;
},
&XDataItem::WorldSpaceDisplacement(ref p) => {
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEDISPLACEMENT, p.x))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEDISPLACEMENT, p.y))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDSPACEDISPLACEMENT, p.z))?;
},
&XDataItem::WorldDirection(ref v) => {
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDDIRECTION, v.x))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDDIRECTION, v.y))?;
writer.write_code_pair(&CodePair::new_f64(XDATA_WORLDDIRECTION, v.z))?;
},
&XDataItem::Real(f) => { writer.write_code_pair(&CodePair::new_f64(XDATA_REAL, f))?; },
&XDataItem::Distance(f) => { writer.write_code_pair(&CodePair::new_f64(XDATA_DISTANCE, f))?; },
&XDataItem::ScaleFactor(f) => { writer.write_code_pair(&CodePair::new_f64(XDATA_SCALEFACTOR, f))?; },
&XDataItem::Integer(i) => { writer.write_code_pair(&CodePair::new_i16(XDATA_INTEGER, i))?; },
&XDataItem::Long(i) => { writer.write_code_pair(&CodePair::new_i32(XDATA_LONG, i))?; },
}
Ok(())
}
}