System Initiative

use std::io::{ BufRead, Write, }; use object_tree::{ GraphError, NodeChild, NodeKind, NodeWithChildren, ReadBytes, WriteBytes, read_key_value_line, write_key_value_line, }; use super::PkgNode; use crate::spec::PositionSpec; const KEY_X_STR: &str = "x"; const KEY_Y_STR: &str = "y"; const KEY_WIDTH_STR: &str = "width"; const KEY_HEIGHT_STR: &str = "height"; #[derive(Clone, Debug)] pub struct PositionNode { pub x: String, pub y: String, pub width: Option<String>, pub height: Option<String>, } impl WriteBytes for PositionNode { fn write_bytes<W: Write>(&self, writer: &mut W) -> Result<(), GraphError> { write_key_value_line(writer, KEY_X_STR, &self.x)?; write_key_value_line(writer, KEY_Y_STR, &self.y)?; write_key_value_line(writer, KEY_WIDTH_STR, self.width.as_deref().unwrap_or(""))?; write_key_value_line(writer, KEY_HEIGHT_STR, self.height.as_deref().unwrap_or(""))?; Ok(()) } } impl ReadBytes for PositionNode { fn read_bytes<R: BufRead>(reader: &mut R) -> Result<Option<Self>, GraphError> where Self: std::marker::Sized, { let x = read_key_value_line(reader, KEY_X_STR)?; let y = read_key_value_line(reader, KEY_Y_STR)?; let width_str = read_key_value_line(reader, KEY_WIDTH_STR)?; let width = if width_str.is_empty() { None } else { Some(width_str) }; let height_str = read_key_value_line(reader, KEY_HEIGHT_STR)?; let height = if height_str.is_empty() { None } else { Some(height_str) }; Ok(Some(Self { x, y, width, height, })) } } impl NodeChild for PositionSpec { type NodeType = PkgNode; fn as_node_with_children(&self) -> NodeWithChildren<Self::NodeType> { NodeWithChildren::new( NodeKind::Leaf, Self::NodeType::Position(PositionNode { x: self.x.to_owned(), y: self.y.to_owned(), width: self.width.to_owned(), height: self.height.to_owned(), }), vec![], ) } }