From 6a842cdc53cf71f383e14dd97454b0f07a379940 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matthias=20K=C3=B6fferlein?= <matthias@koefferlein.de>
Date: Sat, 9 Apr 2022 18:07:30 +0200
Subject: [PATCH] First attempt to implement X2 net names. Needs
 reconfirmation. (#1056)

---
 .../pcb/db_plugin/dbGerberImporter.cc         | 23 +++++++++++-
 .../pcb/db_plugin/dbGerberImporter.h          |  2 +-
 .../streamers/pcb/db_plugin/dbRS274XReader.cc | 37 +++++++++++++++++++
 .../streamers/pcb/db_plugin/dbRS274XReader.h  |  2 +
 4 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.cc b/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.cc
index 44afbddad..7f1a64142 100644
--- a/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.cc
+++ b/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.cc
@@ -415,7 +415,7 @@ GerberFileReader::collect (db::Region &region)
 }
 
 void
-GerberFileReader::flush ()
+GerberFileReader::flush (const std::string &net_name)
 {
   process_clear_polygons ();
 
@@ -425,14 +425,35 @@ GerberFileReader::flush ()
     m_polygons.swap (merged_polygons);
   }
 
+  std::string nn = net_name;
   for (std::vector <unsigned int>::const_iterator t = m_target_layers.begin (); t != m_target_layers.end (); ++t) {
+
     db::Shapes &shapes = mp_top_cell->shapes (*t);
+
     for (std::vector<db::Polygon>::const_iterator p = m_polygons.begin (); p != m_polygons.end (); ++p) {
+
       shapes.insert (*p);
+
+      if (! nn.empty () && p->hull ().begin () != p->hull ().end ()) {
+        db::Point pt = *p->hull ().begin ();
+        shapes.insert (db::Text (nn, db::Trans (pt - db::Point ())));
+        nn.clear ();
+      }
+
     }
+
     for (std::vector<db::Path>::const_iterator p = m_lines.begin (); p != m_lines.end (); ++p) {
+
       shapes.insert (*p);
+
+      if (! nn.empty () && p->begin () != p->end ()) {
+        db::Point pt = *p->begin ();
+        shapes.insert (db::Text (nn, db::Trans (pt - db::Point ())));
+        nn.clear ();
+      }
+
     }
+
   }
 
   m_polygons.clear ();
diff --git a/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.h b/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.h
index cdfe8c2ca..0fcf5ebc4 100644
--- a/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.h
+++ b/src/plugins/streamers/pcb/db_plugin/dbGerberImporter.h
@@ -445,7 +445,7 @@ protected:
    *  @brief Flush the stored data to the output
    *  This method is similar to collect(), but writes the data to the layout.
    */
-  void flush ();
+  void flush (const std::string &net_name = std::string ());
 
   /**
    *  @brief Collects the data taken so far into the given region
diff --git a/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.cc b/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.cc
index bdeaa0b87..ee8e4eec8 100644
--- a/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.cc
+++ b/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.cc
@@ -66,6 +66,7 @@ RS274XReader::init ()
 {
   //  Initialize reader:
   m_clear = false;
+  m_net_name.clear ();
   m_guess_polarity = true;
   m_neg_polarity = false;
   m_relative = false;
@@ -263,6 +264,16 @@ RS274XReader::do_read ()
           read_pf_parameter (get_block ());
         } else if (param == "AD") {
           read_ad_parameter (get_block ());
+        } else if (param == "TO") {
+
+          std::string net_name;
+          if (read_net_name (get_block (), net_name)) {
+            if (! m_net_name.empty ()) {
+              flush (m_net_name);
+            }
+            m_net_name = net_name;
+          }
+
         } else if (param == "TA" || param == "TD" || param == "TF") {
 
           //  TA, TD and TF paramters are skipped for layout
@@ -677,6 +688,10 @@ RS274XReader::do_read ()
 
   }
 
+  if (! m_net_name.empty ()) {
+    flush (m_net_name);
+  }
+
   if (! graphics_stack_empty ()) {
     throw tl::Exception (tl::to_string (tr ("AB block not closed")));
   }
@@ -963,6 +978,28 @@ RS274XReader::read_pf_parameter (const std::string & /*block*/)
   warn (tl::to_string (tr ("PF parameters are ignored")));
 }
 
+bool
+RS274XReader::read_net_name (const std::string &block, std::string &net_name) const
+{
+  tl::Extractor ex (block.c_str ());
+
+  ex.test (".");
+
+  if (ex.test ("N")) {
+
+    //  only parse net names
+    ex.test (",");
+
+    std::string n = ex.get ();
+    if (! n.empty () && n != "N/C") {
+      net_name = n;
+      return true;
+    }
+  }
+
+  return false;
+}
+
 void
 RS274XReader::read_ad_parameter (const std::string &block)
 {
diff --git a/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.h b/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.h
index 40ff94a11..77db31ee0 100644
--- a/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.h
+++ b/src/plugins/streamers/pcb/db_plugin/dbRS274XReader.h
@@ -80,6 +80,7 @@ private:
   std::map<std::string, std::string> m_aperture_macros;
   enum { ab_xy, ab_yx } m_axis_mapping;
   RS274XApertureBase *m_current_aperture;
+  std::string m_net_name;
 
   void read_as_parameter (const std::string &block);
   void read_fs_parameter (const std::string &block);
@@ -103,6 +104,7 @@ private:
   void read_lp_parameter (const std::string &block);
   void read_sr_parameter (const std::string &block);
   void read_if_parameter (const std::string &block);
+  bool read_net_name (const std::string &block, std::string &net_name) const;
   void install_block_aperture (const std::string &dcode, const db::Region &region);
   void process_mcode (int mcode);
   const std::string &get_block ();