Merge pull request #7 from curtacircuitos/zeros_convention

Zeros convention

1 files changed, 16 insertions, 15 deletions

diff --git a/gerber/excellon.py b/gerber/excellon.py
index 17b870a..79a6e1f 100755
--- a/gerber/excellon.py
+++ b/gerber/excellon.py
@@ -43,7 +43,9 @@ def read(filename):
         An ExcellonFile created from the specified file.

 

     """

-    return ExcellonParser(None).parse(filename)

+    # File object should use settings from source file by default.

+    settings = FileSettings(**detect_excellon_format(filename))

+    return ExcellonParser(settings).parse(filename)

 

 

 class ExcellonFile(CamFile):

@@ -116,7 +118,7 @@ class ExcellonParser(object):
     def __init__(self, settings=None):

         self.notation = 'absolute'

         self.units = 'inch'

-        self.zero_suppression = 'leading'

+        self.zeros = 'leading'

         self.format = (2, 4)

         self.state = 'INIT'

         self.statements = []

@@ -126,7 +128,7 @@ class ExcellonParser(object):
         self.pos = [0., 0.]

         if settings is not None:

             self.units = settings.units

-            self.zero_suppression = settings.zero_suppression

+            self.zeros = settings.zeros

             self.notation = settings.notation

             self.format = settings.format

 

@@ -207,7 +209,7 @@ class ExcellonParser(object):
         elif 'INCH' in line or 'METRIC' in line:

             stmt = UnitStmt.from_excellon(line)

             self.units = stmt.units

-            self.zero_suppression = stmt.zero_suppression

+            self.zeros = stmt.zeros

             self.statements.append(stmt)

 

         elif line[:3] == 'M71' or line [:3] == 'M72':

@@ -270,8 +272,7 @@ class ExcellonParser(object):
 

     def _settings(self):

         return FileSettings(units=self.units, format=self.format,

-                            zero_suppression=self.zero_suppression,

-                            notation=self.notation)

+                            zeros=self.zeros, notation=self.notation)

 

 

 def detect_excellon_format(filename):

@@ -293,7 +294,7 @@ def detect_excellon_format(filename):
     results = {}

     detected_zeros = None

     detected_format = None

-    zs_options = ('leading', 'trailing', )

+    zeros_options = ('leading', 'trailing', )

     format_options = ((2, 4), (2, 5), (3, 3),)

 

     # Check for obvious clues:

@@ -301,7 +302,7 @@ def detect_excellon_format(filename):
     p.parse(filename)

 

     # Get zero_suppression from a unit statement

-    zero_statements = [stmt.zero_suppression for stmt in p.statements

+    zero_statements = [stmt.zeros for stmt in p.statements

                        if isinstance(stmt, UnitStmt)]

 

     # get format from altium comment

@@ -316,19 +317,19 @@ def detect_excellon_format(filename):
 

     # Bail out here if possible

     if detected_format is not None and detected_zeros is not None:

-        return {'format': detected_format, 'zero_suppression': detected_zeros}

+        return {'format': detected_format, 'zeros': detected_zeros}

 

     # Only look at remaining options

     if detected_format is not None:

         format_options = (detected_format,)

     if detected_zeros is not None:

-        zs_options = (detected_zeros,)

+        zeros_options = (detected_zeros,)

 

     # Brute force all remaining options, and pick the best looking one...

-    for zs in zs_options:

+    for zeros in zeros_options:

         for fmt in format_options:

-            key = (fmt, zs)

-            settings = FileSettings(zero_suppression=zs, format=fmt)

+            key = (fmt, zeros)

+            settings = FileSettings(zeros=zeros, format=fmt)

             try:

                 p = ExcellonParser(settings)

                 p.parse(filename)

@@ -351,7 +352,7 @@ def detect_excellon_format(filename):
 

     # Bail out here if we got everything....

     if detected_format is not None and detected_zeros is not None:

-        return {'format': detected_format, 'zero_suppression': detected_zeros}

+        return {'format': detected_format, 'zeros': detected_zeros}

 

     # Otherwise score each option and pick the best candidate

     else:

@@ -362,7 +363,7 @@ def detect_excellon_format(filename):
         minscore = min(scores.values())

         for key in scores.iterkeys():

             if scores[key] == minscore:

-                return {'format': key[0], 'zero_suppression': key[1]}

+                return {'format': key[0], 'zeros': key[1]}

 

 

 def _layer_size_score(size, hole_count, hole_area):