specctra: changes for compatibility with EasyEDA

src/specctra/mesadata.rs

@@ -103,8 +103,21 @@ impl SpecctraMesadata {
                 .map(|class| (class.name.clone(), SpecctraRule::from_dsn(&class.rule))),
         );
 
+        let mut structure_rule = super::structure::Rule {
+            width: 0.0,
+            clearances: Vec::new(),
+        };
+        // workaround for differing syntax
+        // collapse multiple rule entries into a single one
+        for rule in &pcb.structure.rules {
+            if rule.width.is_some() {
+                structure_rule.width = rule.width.unwrap()
+            }
+            structure_rule.clearances.extend_from_slice(&rule.clearances);
+        }
+
         Self {
-            structure_rule: SpecctraRule::from_dsn(&pcb.structure.rule),
+            structure_rule: SpecctraRule::from_dsn(&structure_rule),
             class_rules,
             layer_layername,
             net_netname,

src/specctra/structure.rs

@@ -53,9 +53,9 @@ pub struct DsnFile {
 pub struct Pcb {
     #[anon]
     pub name: String,
-    pub parser: Parser,
+    pub parser: Option<Parser>,
     pub resolution: Resolution,
-    pub unit: String,
+    pub unit: Option<String>,
     pub structure: Structure,
     pub placement: Placement,
     pub library: Library,
@@ -87,7 +87,13 @@ pub struct Structure {
     #[vec("plane")]
     pub planes: Vec<Plane>,
     pub via: ViaNames,
-    pub rule: Rule,
+    #[vec("grid")]
+    pub grids: Vec<Grid>,
+    // this is a vec of special structs because EasyEDA uses different syntax
+    // it outputs a sequence of rules containing a clearance each
+    // (in class rules it outputs a single rule with all clearances like KiCad)
+    #[vec("rule")]
+    pub rules: Vec<StructureRule>,
 }
 
 #[derive(ReadDsn, WriteSes, Debug)]
@@ -121,6 +127,21 @@ pub struct ViaNames {
     pub names: Vec<String>,
 }
 
+#[derive(ReadDsn, WriteSes, Debug)]
+pub struct Grid {
+    #[anon]
+    pub kind: String,
+    #[anon]
+    pub value: f64,
+}
+
+#[derive(ReadDsn, WriteSes, Debug)]
+pub struct StructureRule {
+    pub width: Option<f32>,
+    #[vec("clearance")]
+    pub clearances: Vec<Clearance>,
+}
+
 #[derive(ReadDsn, WriteSes, Debug)]
 pub struct Placement {
     #[vec("component")]
@@ -428,7 +449,7 @@ pub struct Rule {
     pub clearances: Vec<Clearance>,
 }
 
-#[derive(ReadDsn, WriteSes, Debug)]
+#[derive(ReadDsn, WriteSes, Clone, Debug)]
 pub struct Clearance {
     #[anon]
     pub value: f32,