feat(precheck): add zeroarea check

2026-11-03 04:36:09 +01:00 · 2024-04-20 00:36:09 +03:00
parent bd22f82b1b
commit f8dc00aeac
5 changed files with 112 additions and 0 deletions
@@ -0,0 +1,82 @@
+# based in part on: https://www.klayout.de/forum/discussion/173/use-klayout-in-batch-mode
+
+$errs = 0
+del = 0
+delZLp = true
+len0 = 0
+len0Del = 0
+
+ly = RBA::Layout.new
+source($input, $top_cell_name)
+ly.read($input)
+report("zero area check", $report)
+
+ly.layer_indices.each { |li|
+  ly.each_cell { |cell|
+    cell.shapes(li).each { |shape|
+      # TODO: must we check that shape is one of: box, polygon, path? What happens to text?
+      if shape.is_valid? && (!shape.is_null?) &&
+          (shape.is_box? || shape.is_path? || shape.is_polygon?) &&
+          shape.area == 0
+        $errs += 1
+        polygons().insert(shape.dpolygon).output("zero_area_shape")
+        if $cleaned_output
+          shape.delete
+          del += 1
+         end
+      elsif delZLp && shape.is_valid? && (!shape.is_null?) && shape.is_path?
+        # puts "path on layer:#{layer_info} area:#{shape.area}"
+        lastpt = nil
+        same = true
+        # walk the points. First time we identify at least two unique-points, skip: not a zero-length path.
+        shape.each_point { |pt|
+          if lastpt && lastpt != pt
+            same = false
+            break
+          end
+          lastpt = pt
+        }
+        if same
+          # puts "zero-length path on layer:#{layer_info} area:#{shape.area} path:#{shape.to_s}"
+          len0 += 1
+          $errs += 1
+          if $cleaned_output
+            shape.delete
+            len0Del += 1
+          end
+        end
+      end
+    }
+  }
+}
+
+if $cleaned_output
+  puts "writing to #{$cleaned_output}"
+  ly.write($cleaned_output)
+end
+
+puts "#{$errs} zero-area shapes"
+
+del += len0Del
+if delZLp
+  puts "#{len0} zero-length paths,  #{len0Del} zero-length paths deleted."
+end
+puts "#{$errs} total zero-area objects,  #{del} total objects deleted."
+
+# if we roll-over to 256, exit-status seen by shell is zero.
+# uncaught I/O errors will yield (built-in) exit status of 1.
+if $errs > 0
+  $errs = $errs + 1
+end
+if $errs > 127
+  $errs = 127
+end
+# experimental: report own peak process-stats. BUT: output-file isn't really written
+# until we exit (during exit). So these results are not 100% accurate.
+# VmHWM: max-resident-size, VmPeak: max virtual-size.
+# don't need: pid=Process.pid
+if   File.readable?("/proc/self/status")
+  puts File.foreach("/proc/self/status").grep(/^(VmPeak|VmHWM)/)
+end
+# does not work (to set exit-status) in 0.23.11. Does work in 0.24.2, 0.27.
+exit $errs