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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
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PYCHECKER_MOULES = gdsii gdsii.library gdsii.structure gdsii.elements gdsii.types gdsii.tags \
gdsii._records gdsii.exceptions gdsii.record
PYTHON ?= python
help:
@echo Commands: doc clean check pychecker
doc:
$(MAKE) -C doc html
clean: clean-pyc
rm -rf build dist
rm -f MANIFEST
$(MAKE) -C doc clean
clean-pyc:
find . -name '*.py[co]' -print0 | xargs -r0 rm --
check:
$(PYTHON) -m gdsii.record
$(PYTHON) -m gdsii.tags
$(PYTHON) -m test.test_record
$(PYTHON) -m test.test_lib
pychecker:
pychecker -J 20 $(PYCHECKER_MOULES)
.PHONY: clean clean-pyc doc check pychecker

25
PKG-INFO Normal file
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Metadata-Version: 1.1
Name: python-gdsii
Version: 0.2.1
Summary: GDSII manipulation libaray
Home-page: http://www.gitorious.org/python-gdsii
Author: Eugeniy Meshcheryakov
Author-email: eugen@debian.org
License: LGPL-3+
Description:
python-gdsii is a library that can be used to read, create, modify and save
GDSII files. It supports both low-level record I/O and high level interface to
GDSII libraries (databases), structures, and elements.
This package also includes scripts that can be used to convert binary GDS file
to a simple text format (gds2txt), YAML (gds2yaml), and from text fromat back
to GDSII (txt2gds).
Platform: any
Classifier: Development Status :: 3 - Alpha
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
Classifier: Programming Language :: Python
Classifier: Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)
Classifier: Topic :: Software Development :: Libraries :: Python Modules

40
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python-gdsii --- a GDSII manipulation libaray
=============================================
python-gdsii is a library that can be used to read, create, modify and save
GDSII files. It supports both low-level record I/O and high level interface to
GDSII libraries (databases), structures, and elements.
This package also includes scripts that can be used to convert binary GDS file
to a simple text format (gds2txt), YAML (gds2yaml), and from text fromat
back to GDSII (txt2gds).
Usage
-----
For most cases interface provided by Library class from gdsii.library should be
enough. Here is a small example::
from gdsii.library import Library
from gdsii.elements import *
# read a library from a file
with open('file.gds', 'rb') as stream:
lib = Library.load(stream)
# let's move the first structure to a new library
new_lib = Library(5, b'NEWLIB.DB', 1e-9, 0.001)
struc = lib.pop(0) # libraries and structures are derived from list class
new_lib.append(struc)
# let's also add some elements...
# Note: first and last points in the boundary should be the same
# this is required by GDSII spec.
struc.append(Boundary(45, 0, [(-100000, -100000), (-100000, 0), (0,0), (0, -100000), (-100000, -100000)]))
# Save both files with different names...
with open('newfile1.gds', 'wb') as stream:
lib.save(stream)
with open('newfile2.gds', 'wb') as stream:
new_lib.save(stream)

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# Makefile for Sphinx documentation
#
# You can set these variables from the command line.
SPHINXOPTS =
SPHINXBUILD = sphinx-build
PAPER =
BUILDDIR = _build
# Internal variables.
PAPEROPT_a4 = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
.PHONY: help clean html dirhtml pickle json htmlhelp qthelp latex changes linkcheck doctest
help:
@echo "Please use \`make <target>' where <target> is one of"
@echo " html to make standalone HTML files"
@echo " dirhtml to make HTML files named index.html in directories"
@echo " pickle to make pickle files"
@echo " json to make JSON files"
@echo " htmlhelp to make HTML files and a HTML help project"
@echo " qthelp to make HTML files and a qthelp project"
@echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
@echo " changes to make an overview of all changed/added/deprecated items"
@echo " linkcheck to check all external links for integrity"
@echo " doctest to run all doctests embedded in the documentation (if enabled)"
clean:
-rm -rf $(BUILDDIR)/*
html:
$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
dirhtml:
$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
pickle:
$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
@echo
@echo "Build finished; now you can process the pickle files."
json:
$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
@echo
@echo "Build finished; now you can process the JSON files."
htmlhelp:
$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
@echo
@echo "Build finished; now you can run HTML Help Workshop with the" \
".hhp project file in $(BUILDDIR)/htmlhelp."
qthelp:
$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
@echo
@echo "Build finished; now you can run "qcollectiongenerator" with the" \
".qhcp project file in $(BUILDDIR)/qthelp, like this:"
@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/pygdsii.qhcp"
@echo "To view the help file:"
@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/pygdsii.qhc"
latex:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
@echo
@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
@echo "Run \`make all-pdf' or \`make all-ps' in that directory to" \
"run these through (pdf)latex."
changes:
$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
@echo
@echo "The overview file is in $(BUILDDIR)/changes."
linkcheck:
$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
@echo
@echo "Link check complete; look for any errors in the above output " \
"or in $(BUILDDIR)/linkcheck/output.txt."
doctest:
$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
@echo "Testing of doctests in the sources finished, look at the " \
"results in $(BUILDDIR)/doctest/output.txt."

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# -*- coding: utf-8 -*-
#
# pygdsii documentation build configuration file, created by
# sphinx-quickstart on Sun Aug 15 02:07:50 2010.
#
# This file is execfile()d with the current directory set to its containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
import sys, os
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
sys.path.append(os.path.abspath('..'))
# -- General configuration -----------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be extensions
# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = ['sphinx.ext.autodoc', 'sphinx.ext.todo', 'sphinx.ext.coverage']
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix of source filenames.
source_suffix = '.rst'
# The encoding of source files.
source_encoding = 'utf-8'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'python-gdsii'
copyright = u'2010–2011, Eugeniy Meshcheryakov'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = '0.2'
# The full version, including alpha/beta/rc tags.
release = '0.2'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'
# List of documents that shouldn't be included in the build.
#unused_docs = []
# List of directories, relative to source directory, that shouldn't be searched
# for source files.
exclude_trees = ['_build']
# The reST default role (used for this markup: `text`) to use for all documents.
#default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text.
#add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'default'
# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []
# -- Options for HTML output ---------------------------------------------------
# The theme to use for HTML and HTML Help pages. Major themes that come with
# Sphinx are currently 'default' and 'sphinxdoc'.
html_theme = 'sphinxdoc'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
#html_theme_path = []
# The name for this set of Sphinx documents. If None, it defaults to
# "<project> v<release> documentation".
#html_title = None
# A shorter title for the navigation bar. Default is the same as html_title.
#html_short_title = None
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
#html_logo = None
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
#html_favicon = None
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
#html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
#html_sidebars = {}
# Additional templates that should be rendered to pages, maps page names to
# template names.
#html_additional_pages = {}
# If false, no module index is generated.
#html_use_modindex = True
# If false, no index is generated.
#html_use_index = True
# If true, the index is split into individual pages for each letter.
#html_split_index = False
# If true, links to the reST sources are added to the pages.
#html_show_sourcelink = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
#html_use_opensearch = ''
# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
#html_file_suffix = ''
# Output file base name for HTML help builder.
#htmlhelp_basename = 'pygdsiidoc'
# -- Options for LaTeX output --------------------------------------------------
# The paper size ('letter' or 'a4').
#latex_paper_size = 'letter'
# The font size ('10pt', '11pt' or '12pt').
#latex_font_size = '10pt'
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass [howto/manual]).
latex_documents = [
('index', 'pygdsii.tex', u'python-gdsii Documentation',
u'Eugeniy Meshcheryakov', 'manual'),
]
# The name of an image file (relative to this directory) to place at the top of
# the title page.
#latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
#latex_use_parts = False
# Additional stuff for the LaTeX preamble.
#latex_preamble = ''
# Documents to append as an appendix to all manuals.
#latex_appendices = []
# If false, no module index is generated.
#latex_use_modindex = True

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.. automodule:: gdsii.elements
:synopsis: module containing classes for GDSII elements.
Possible instance attributes:
:attr:`elflags`
Element flags (:class:`int`, optional).
Bit 15 specifies template data.
Bit 14 specifies external data.
:attr:`plex`
Plex number (:class:`int`, optional).
:attr:`layer`
Element layer (:class:`int`)
:attr:`data_type`
Element data type (:class:`int`)
:attr:`path_type`
Type of path endpoints (:class:`int`, optional).
The values have the following meaning:
* 0 -- square ends, flush with endpoints
* 1 -- round ends, centered on endpoints
* 2 -- square ends, centered on endpoints
* 4 -- custom square ends
:attr:`width`
Width of the path (:class:`int`, optional). If the value is negative,
then the width is absolute and not affected by magnification factor.
:attr:`bgn_extn`, :attr:`end_extn`
Start end end extensions for :attr:`path_type` 4 (:class:`int`, optional).
:attr:`xy`
List of points (:class:`list` of tuples ``(x, y)``).
:attr:`struct_name`
Name of the referenced structure (:class:`bytes`).
:attr:`strans`
Transformation flags (:class:`int`, optional). Bits have the following meaning:
* 0 -- reclection about X axis
* 13 -- absolute magnification
* 14 -- absolute angle
:attr:`mag`
Magnification factor (:class:`float`, optional).
:attr:`angle`
Rotation factor in degrees (:class:`float`, optional). Rotation is counterclockwise.
:attr:`cols`
Number of columns (:class:`int`).
:attr:`rows`
Number of rows (:class:`int`).
:attr:`text_type`
Text type (:class:`int`).
:attr:`presentation`
Bit array that specifies how the text is presented (:class:`int`, optional).
Meaning of bits:
* Bits 10 and 11 specify font number (0-3).
* Bits 12 and 13 specify vertical justification (0 -- top, 1 -- middle, 2 -- bottom).
* Bits 14 and 15 specify horizontal justification (0 -- left, 1 -- center, 2 -- rigth).
:attr:`string`
String for :const:`TEXT` element (:class:`bytes`).
:attr:`node_type`
Node type (:class:`int`).
:attr:`box_type`
Box type (:class:`int`).
:attr:`properties`
Element properties, represented as a list of tupes (`propattr`, `propvalue`).
`propattr` is an :class:`int`, `propvalue` is :class:`bytes`.
This attribute is optional.
.. autoclass:: ARef
Required attributes: :attr:`struct_name`, :attr:`cols`, :attr:`rows`, :attr:`xy`.
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`strans`, :attr:`mag`,
:attr:`angle`, :attr:`properties`.
.. autoclass:: Boundary
Required attributes: :attr:`layer`, :attr:`data_type`, :attr:`xy`.
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`properties`.
.. autoclass:: Box
Required attributes: :attr:`layer`, :attr:`box_type`, :attr:`xy`.
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`properties`.
.. autoclass:: Node
Required attributes: :attr:`layer`, :attr:`node_type`, :attr:`xy`
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`properties`
.. autoclass:: Path
Required attributes: :attr:`layer`, :attr:`data_type`, :attr:`xy`
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`path_type`,
:attr:`width`, :attr:`bgn_extn`, :attr:`end_extn`, :attr:`properties`
.. autoclass:: SRef
Required attributes: :attr:`struct_name`, :attr:`xy`
Optional attributes: :attr:`elflags`, :attr:`strans`, :attr:`mag`,
:attr:`angle`, :attr:`properties`
.. autoclass:: Text
Required attributes: :attr:`layer`, :attr:`text_type`, :attr:`xy`, :attr:`string`
Optional attributes: :attr:`elflags`, :attr:`plex`, :attr:`presentation`,
:attr:`path_type`, :attr:`width`, :attr:`strans`, :attr:`mag`, :attr:`angle`, :attr:`properties`

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.. automodule:: gdsii.exceptions
:members:
:show-inheritance:

13
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:mod:`gdsii` --- GDSII manipulation library
===========================================
.. toctree::
:maxdepth: 2
library
structure
elements
tags
types
record
exceptions

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.. automodule:: gdsii.library
:synopsis: module containing GDSII library class.
.. autoclass:: Library
:show-inheritance:
.. automethod:: __init__
Instance attributes:
.. attribute:: version
GDSII file verion (:class:`int`).
Number as found in a GDSII file.
For example value is 5 for GDSII v5 and 0x600 for GDSII v6.
.. attribute:: name
Library name (:class:`bytes`).
.. attribute:: physical_unit
Size of database unit in meters (:class:`float`).
.. attribute:: logical_unit
Size of user unit in database units (:class:`float`).
.. attribute:: mod_time
Last modification time (:class:`datetime`).
.. attribute:: acc_time
Last access time (:class:`datetime`).
.. attribute:: libdirsize
Number of pages in the library directory (:class:`int`, optional).
.. attribute:: srfname
Name of spacing rules file (:class:`bytes`, optional).
.. attribute:: acls
ACL data (:class:`list` of tuples ``(GID, UID, ACCESS)``, optional).
.. attribute:: reflibs
Names of reference libraries (:class:`bytes`, optional).
See GDSII stream format documentation for format.
.. attribute:: fonts
Names of font definition files (:class:`bytes`, optional).
The content is not parsed, see GDSII stream format documentation
for format.
.. attribute:: attrtable
Name of attribute definition file (:class:`bytes`, optional).
.. attribute:: generations
Number of copies for deleted structures (:class:`int`, optional)
.. attribute:: format
Library format (:class:`int`, optional). Possible values:
* 0 -- GDSII archive format
* 1 -- GDSII filtered format
* 2 -- EDSIII archive format
* 3 -- EDSIII filtered format
.. attribute:: masks
Masks for filtered format (:class:`list` of :class:`bytes`, optional).
.. automethod:: load
.. automethod:: save

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.. automodule:: gdsii.record
.. autoclass:: Record
:members:
.. attribute:: data
Element data.
.. attribute:: tag
Element tag (:class:`int`).
.. autoclass:: Reader
:members:
.. attribute:: current
Last record read from stream.

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.. automodule:: gdsii.structure
:synopsis: module containing GDSII structure class.
.. autoclass:: Structure
:show-inheritance:
.. automethod:: __init__
Instance attributes:
.. attribute:: name
Structure name (:class:`bytes`).
.. attribute:: mod_time
Last modification time (:class:`datetime`).
.. attribute:: acc_time
Last access time (:class:`datetime`).
.. attribute:: strclass
Structure class (:class:`int`, optional).

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.. automodule:: gdsii.tags
The following vaues are defined::
HEADER = 0x0002
BGNLIB = 0x0102
LIBNAME = 0x0206
UNITS = 0x0305
ENDLIB = 0x0400
BGNSTR = 0x0502
STRNAME = 0x0606
ENDSTR = 0x0700
BOUNDARY = 0x0800
PATH = 0x0900
SREF = 0x0A00
AREF = 0x0B00
TEXT = 0x0C00
LAYER = 0x0D02
DATATYPE = 0x0E02
WIDTH = 0x0F03
XY = 0x1003
ENDEL = 0x1100
SNAME = 0x1206
COLROW = 0x1302
TEXTNODE = 0x1400
NODE = 0x1500
TEXTTYPE = 0x1602
PRESENTATION = 0x1701
STRING = 0x1906
STRANS = 0x1A01
MAG = 0x1B05
ANGLE = 0x1C05
REFLIBS = 0x1F06
FONTS = 0x2006
PATHTYPE = 0x2102
GENERATIONS = 0x2202
ATTRTABLE = 0x2306
STYPTABLE = 0x2406
STRTYPE = 0x2502
ELFLAGS = 0x2601
ELKEY = 0x2703
NODETYPE = 0x2A02
PROPATTR = 0x2B02
PROPVALUE = 0x2C06
BOX = 0x2D00
BOXTYPE = 0x2E02
PLEX = 0x2F03
BGNEXTN = 0x3003
ENDEXTN = 0x3103
TAPENUM = 0x3202
TAPECODE = 0x3302
STRCLASS = 0x3401
FORMAT = 0x3602
MASK = 0x3706
ENDMASKS = 0x3800
LIBDIRSIZE = 0x3902
SRFNAME = 0x3A06
LIBSECUR = 0x3B02
Types used only with Custom Plus (not handled by pygdsii)::
BORDER = 0x3C00
SOFTFENCE = 0x3D00
HARDFENCE = 0x3E00
SOFTWIRE = 0x3F00
HARDWIRE = 0x4000
PATHPORT = 0x4100
NODEPORT = 0x4200
USERCONSTRAINT = 0x4300
SPACERERROR = 0x4400
CONTACT = 0x4500
Additionaly this module contains the following members:
.. autofunction:: type_of_tag
.. data:: DICT
A dictionary that maps tag names to tag IDs.
.. data:: REV_DICT
A dictionary that maps tag IDs to tag names.

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.. automodule:: gdsii.types
Defined members::
NODATA = 0
BITARRAY = 1
INT2 = 2
INT4 = 3
REAL4 = 4
REAL8 = 5
ASCII = 6
Type :const:`REAL4` is not used in GDSII and not handled by `python-gdsii`.
Additionaly this module contains the following members:
.. data:: DICT
A dictionary that maps type names to type IDs.
.. data:: REV_DICT
A dictionary that maps type IDs to type names.

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Welcome to python-gdsii's documentation!
========================================
`python-gdsii` is a library that can be used to read, create, modify and save
GDSII files. It supports both low-level record I/O and high level interface to
GDSII libraries (databases), structures, and elements.
This package also includes scripts that can be used to convert binary GDS file
to a simple text format (`gds2txt`), YAML (`gds2yaml`), and from text format
back to GDSII (`txt2gds`).
Contents:
.. toctree::
:maxdepth: 2
gdsii/index
Download
--------
`python-gdsii` can be downloaded from its Python Package Index `page <http://pypi.python.org/pypi/python-gdsii/>`_.
The source code repository is available on `gitorious.org <http://gitorious.org/python-gdsii>`_.
Usage
-----
For most cases interface provided by Library class from gdsii.library should be
enough. Here is a small example::
from gdsii.library import Library
from gdsii.elements import *
# read a library from a file
with open('file.gds', 'rb') as stream:
lib = Library.load(stream)
# let's move the first structure to a new library
new_lib = Library(5, b'NEWLIB.DB', 1e-9, 0.001)
struc = lib.pop(0) # libraries and structures are derived from list class
new_lib.append(struc)
# let's also add some elements...
# Note: first and last points in the boundary should be the same
# this is required by GDSII spec.
struc.append(Boundary(45, 0, [(-100000, -100000), (-100000, 0), (0,0), (0, -100000), (-100000, -100000)]))
# Save both files with different names...
with open('newfile1.gds', 'wb') as stream:
lib.save(stream)
with open('newfile2.gds', 'wb') as stream:
new_lib.save(stream)
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

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@ECHO OFF
REM Command file for Sphinx documentation
set SPHINXBUILD=sphinx-build
set BUILDDIR=_build
set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
if NOT "%PAPER%" == "" (
set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
)
if "%1" == "" goto help
if "%1" == "help" (
:help
echo.Please use `make ^<target^>` where ^<target^> is one of
echo. html to make standalone HTML files
echo. dirhtml to make HTML files named index.html in directories
echo. pickle to make pickle files
echo. json to make JSON files
echo. htmlhelp to make HTML files and a HTML help project
echo. qthelp to make HTML files and a qthelp project
echo. latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter
echo. changes to make an overview over all changed/added/deprecated items
echo. linkcheck to check all external links for integrity
echo. doctest to run all doctests embedded in the documentation if enabled
goto end
)
if "%1" == "clean" (
for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
del /q /s %BUILDDIR%\*
goto end
)
if "%1" == "html" (
%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
echo.
echo.Build finished. The HTML pages are in %BUILDDIR%/html.
goto end
)
if "%1" == "dirhtml" (
%SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
echo.
echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
goto end
)
if "%1" == "pickle" (
%SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
echo.
echo.Build finished; now you can process the pickle files.
goto end
)
if "%1" == "json" (
%SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
echo.
echo.Build finished; now you can process the JSON files.
goto end
)
if "%1" == "htmlhelp" (
%SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
echo.
echo.Build finished; now you can run HTML Help Workshop with the ^
.hhp project file in %BUILDDIR%/htmlhelp.
goto end
)
if "%1" == "qthelp" (
%SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
echo.
echo.Build finished; now you can run "qcollectiongenerator" with the ^
.qhcp project file in %BUILDDIR%/qthelp, like this:
echo.^> qcollectiongenerator %BUILDDIR%\qthelp\pygdsii.qhcp
echo.To view the help file:
echo.^> assistant -collectionFile %BUILDDIR%\qthelp\pygdsii.ghc
goto end
)
if "%1" == "latex" (
%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
echo.
echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
goto end
)
if "%1" == "changes" (
%SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
echo.
echo.The overview file is in %BUILDDIR%/changes.
goto end
)
if "%1" == "linkcheck" (
%SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
echo.
echo.Link check complete; look for any errors in the above output ^
or in %BUILDDIR%/linkcheck/output.txt.
goto end
)
if "%1" == "doctest" (
%SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
echo.
echo.Testing of doctests in the sources finished, look at the ^
results in %BUILDDIR%/doctest/output.txt.
goto end
)
:end

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import absolute_import
from . import record, tags
class AbstractRecord(object):
def __init__(self, variable):
self.variable = variable
def read(self, instance, gen):
raise NotImplementedError
def save(self, instance, stream):
raise NotImplementedError
def __repr__(self):
return '<property: %s>'%self.variable
class SecondVar(object):
"""Class that simplifies second property support."""
def __init__(self, variable2):
self.variable2 = variable2
class SimpleRecord(AbstractRecord):
def __init__(self, variable, gds_record):
AbstractRecord.__init__(self, variable)
self.gds_record = gds_record
def read(self, instance, gen):
rec = gen.current
rec.check_tag(self.gds_record)
rec.check_size(1)
setattr(instance, self.variable, rec.data[0])
gen.read_next()
def save(self, instance, stream):
record.Record(self.gds_record, (getattr(instance, self.variable),)).save(stream)
class SimpleOptionalRecord(SimpleRecord):
def optional_read(self, instance, unused_gen, rec):
"""
Called when optional tag is found. `rec` contains that tag.
`gen` is advanced to next record befor calling this function.
"""
rec.check_size(1)
setattr(instance, self.variable, rec.data[0])
def read(self, instance, gen):
rec = gen.current
if rec.tag == self.gds_record:
gen.read_next()
self.optional_read(instance, gen, rec)
def save(self, instance, stream):
data = getattr(instance, self.variable, None)
if data is not None:
record.Record(self.gds_record, (data,)).save(stream)
class OptionalWholeRecord(SimpleOptionalRecord):
"""Class for records that need to store all data (not data[0])."""
def optional_read(self, instance, unused_gen, rec):
setattr(instance, self.variable, rec.data)
def save(self, instance, stream):
data = getattr(instance, self.variable, None)
if data is not None:
record.Record(self.gds_record, data).save(stream)
class PropertiesRecord(AbstractRecord):
def read(self, instance, gen):
rec = gen.current
props = []
while rec.tag == tags.PROPATTR:
rec.check_size(1)
propattr = rec.data[0]
rec = gen.read_next()
rec.check_tag(tags.PROPVALUE)
props.append((propattr, rec.data))
rec = gen.read_next()
setattr(instance, self.variable, props)
def save(self, instance, stream):
props = getattr(instance, self.variable)
if props:
for (propattr, propvalue) in props:
record.Record(tags.PROPATTR, (propattr,)).save(stream)
record.Record(tags.PROPVALUE, propvalue).save(stream)
class XYRecord(SimpleRecord):
def read(self, instance, gen):
rec = gen.current
rec.check_tag(self.gds_record)
setattr(instance, self.variable, rec.points)
gen.read_next()
def save(self, instance, stream):
pts = getattr(instance, self.variable)
record.Record(self.gds_record, points=pts).save(stream)
class StringRecord(SimpleRecord):
def read(self, instance, gen):
rec = gen.current
rec.check_tag(self.gds_record)
setattr(instance, self.variable, rec.data)
gen.read_next()
def save(self, instance, stream):
record.Record(self.gds_record, getattr(instance, self.variable)).save(stream)
class ColRowRecord(AbstractRecord, SecondVar):
def __init__(self, variable1, variable2):
AbstractRecord.__init__(self, variable1)
SecondVar.__init__(self, variable2)
def read(self, instance, gen):
rec = gen.current
rec.check_tag(tags.COLROW)
rec.check_size(2)
cols, rows = rec.data
setattr(instance, self.variable, cols)
setattr(instance, self.variable2, rows)
gen.read_next()
def save(self, instance, stream):
col = getattr(instance, self.variable)
row = getattr(instance, self.variable2)
record.Record(tags.COLROW, (col, row)).save(stream)
class TimestampsRecord(SimpleRecord, SecondVar):
def __init__(self, variable1, variable2, gds_record):
SimpleRecord.__init__(self, variable1, gds_record)
SecondVar.__init__(self, variable2)
def read(self, instance, gen):
rec = gen.current
rec.check_tag(self.gds_record)
mod_time, acc_time = rec.times
setattr(instance, self.variable, mod_time)
setattr(instance, self.variable2, acc_time)
gen.read_next()
def save(self, instance, stream):
mod_time = getattr(instance, self.variable)
acc_time = getattr(instance, self.variable2)
record.Record(self.gds_record, times=(mod_time, acc_time)).save(stream)
class STransRecord(OptionalWholeRecord):
mag = SimpleOptionalRecord('mag', tags.MAG)
angle = SimpleOptionalRecord('angle', tags.ANGLE)
def optional_read(self, instance, gen, rec):
setattr(instance, self.variable, rec.data)
self.mag.read(instance, gen)
self.angle.read(instance, gen)
def save(self, instance, stream):
data = getattr(instance, self.variable, None)
if data is not None:
OptionalWholeRecord.save(self, instance, stream)
self.mag.save(instance, stream)
self.angle.save(instance, stream)
class ACLRecord(SimpleOptionalRecord):
def optional_read(self, instance, unused_gen, rec):
setattr(instance, self.variable, rec.acls)
def save(self, instance, stream):
data = getattr(instance, self.variable, None)
if data:
record.Record(self.gds_record, acls=data).save(stream)
class FormatRecord(SimpleOptionalRecord, SecondVar):
def __init__(self, variable1, variable2, gds_record):
SimpleOptionalRecord.__init__(self, variable1, gds_record)
SecondVar.__init__(self, variable2)
def optional_read(self, instance, gen, rec):
SimpleOptionalRecord.optional_read(self, instance, gen, rec)
cur_rec = gen.curent
if cur_rec.tag == tags.MASK:
masks = []
while cur_rec.tag == tags.MASK:
masks.append(cur_rec.data)
cur_rec = gen.read_next()
cur_rec.check_tag(tags.ENDMASKS)
setattr(instance, self.variable2, masks)
gen.read_next()
def save(self, instance, stream):
fmt = getattr(instance, self.variable, None)
if fmt is not None:
SimpleOptionalRecord.save(self, instance, stream)
masks = getattr(instance, self.variable2, None)
if masks:
for mask in masks:
record.Record(tags.MASK, mask).save(stream)
record.Record(tags.ENDMASKS).save(stream)
class UnitsRecord(SimpleRecord, SecondVar):
def __init__(self, variable1, variable2, gds_record):
SimpleRecord.__init__(self, variable1, gds_record)
SecondVar.__init__(self, variable2)
def read(self, instance, gen):
rec = gen.current
rec.check_tag(self.gds_record)
rec.check_size(2)
unit1, unit2 = rec.data
setattr(instance, self.variable, unit1)
setattr(instance, self.variable2, unit2)
gen.read_next()
def save(self, instance, stream):
unit1 = getattr(instance, self.variable)
unit2 = getattr(instance, self.variable2)
record.Record(self.gds_record, (unit1, unit2)).save(stream)

390
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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.elements` -- interface to GDSII elements
====================================================
This module contains definitions for classes representing
various GDSII elements. Mapping between GDSII elements and
classes is given in the following table:
+-------------------+-------------------+
| GDSII Record | Class |
+===================+===================+
| :const:`AREF` | :class:`ARef` |
+-------------------+-------------------+
| :const:`BOUNDARY` | :class:`Boundary` |
+-------------------+-------------------+
| :const:`BOX` | :class:`Box` |
+-------------------+-------------------+
| :const:`NODE` | :class:`Node` |
+-------------------+-------------------+
| :const:`PATH` | :class:`Path` |
+-------------------+-------------------+
| :const:`SREF` | :class:`SRef` |
+-------------------+-------------------+
| :const:`TEXT` | :class:`Text` |
+-------------------+-------------------+
This module implements the following GDS syntax:
.. productionlist::
element: `aref` |
: `boundary` |
: `box` |
: `node` |
: `path` |
: `sref` |
: `text`
Additional definitions:
.. productionlist::
properties: `property`*
property: PROPATTR
: PROPVALUE
strans: STRANS
: [MAG]
: [ANGLE]
.. moduleauthor:: Eugeniy Meshcheryakov <eugen@debian.org>
"""
from __future__ import absolute_import
from . import exceptions, record, tags, _records
__all__ = (
'Boundary',
'Path',
'SRef',
'ARef',
'Text',
'Node',
'Box'
)
_ELFLAGS = _records.OptionalWholeRecord('elflags', tags.ELFLAGS)
_PLEX = _records.SimpleOptionalRecord('plex', tags.PLEX)
_LAYER = _records.SimpleRecord('layer', tags.LAYER)
_DATATYPE = _records.SimpleRecord('data_type', tags.DATATYPE)
_PATHTYPE = _records.SimpleOptionalRecord('path_type', tags.PATHTYPE)
_WIDTH = _records.SimpleOptionalRecord('width', tags.WIDTH)
_BGNEXTN = _records.SimpleOptionalRecord('bgn_extn', tags.BGNEXTN)
_ENDEXTN = _records.SimpleOptionalRecord('end_extn', tags.ENDEXTN)
_XY = _records.XYRecord('xy', tags.XY)
_SNAME = _records.StringRecord('struct_name', tags.SNAME)
_STRANS = _records.STransRecord('strans', tags.STRANS)
_COLROW = _records.ColRowRecord('cols', 'rows')
_TEXTTYPE = _records.SimpleRecord('text_type', tags.TEXTTYPE)
_PRESENTATION = _records.OptionalWholeRecord('presentation', tags.PRESENTATION)
_STRING = _records.StringRecord('string', tags.STRING)
_NODETYPE = _records.SimpleRecord('node_type', tags.NODETYPE)
_BOXTYPE = _records.SimpleRecord('box_type', tags.BOXTYPE)
_PROPERTIES = _records.PropertiesRecord('properties')
class _Base(object):
"""Base class for all GDSII elements."""
# dummy descriptors to silence pyckecker, should be set in derived classes
_gds_tag = None
_gds_objs = None
__slots__ = ()
def __init__(self):
"""Initialize the element."""
self._init_optional()
def _init_optional(self):
"""Initialize optional attributes to None."""
raise NotImplementedError
@classmethod
def _load(cls, gen):
"""
Load an element from file using given generator `gen`.
:param gen: :class:`pygdsii.record.Record` generator
:returns: new element of class defined by `gen`
"""
element_class = cls._tag_to_class_map[gen.current.tag]
if not element_class:
raise exceptions.FormatError('unexpected element tag')
# do not call __init__() during reading from file
# __init__() should require some arguments
new_element = element_class._read_element(gen)
return new_element
@classmethod
def _read_element(cls, gen):
"""Read element using `gen` generator."""
self = cls.__new__(cls)
self._init_optional()
gen.read_next()
for obj in self._gds_objs:
obj.read(self, gen)
gen.current.check_tag(tags.ENDEL)
gen.read_next()
return self
def _save(self, stream):
record.Record(self._gds_tag).save(stream)
for obj in self._gds_objs:
obj.save(self, stream)
record.Record(tags.ENDEL).save(stream)
class Boundary(_Base):
"""
Class for :const:`BOUNDARY` GDSII element.
GDS syntax:
.. productionlist::
boundary: BOUNDARY
: [ELFLAGS]
: [PLEX]
: LAYER
: DATATYPE
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.BOUNDARY
_gds_objs = (_ELFLAGS, _PLEX, _LAYER, _DATATYPE, _XY, _PROPERTIES)
__slots__ = ('layer', 'data_type', 'xy', 'elflags', 'plex', 'properties')
def __init__(self, layer, data_type, xy):
_Base.__init__(self)
self.layer = layer
self.data_type = data_type
self.xy = xy
def _init_optional(self):
self.elflags = None
self.plex = None
self.properties = None
class Path(_Base):
"""
Class for :const:`PATH` GDSII element.
GDS syntax:
.. productionlist::
path: PATH
: [ELFLAGS]
: [PLEX]
: LAYER
: DATATYPE
: [PATHTYPE]
: [WIDTH]
: [BGNEXTN]
: [ENDEXTN]
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.PATH
_gds_objs = (_ELFLAGS, _PLEX, _LAYER, _DATATYPE, _PATHTYPE, _WIDTH,
_BGNEXTN, _ENDEXTN, _XY, _PROPERTIES)
__slots__ = ('layer', 'data_type', 'xy', 'elflags', 'plex', 'path_type',
'width', 'bgn_extn', 'end_extn', 'properties')
def __init__(self, layer, data_type, xy):
_Base.__init__(self)
self.layer = layer
self.data_type = data_type
self.xy = xy
def _init_optional(self):
self.elflags = None
self.plex = None
self.path_type = None
self.width = None
self.bgn_extn = None
self.end_extn = None
self.properties = None
class SRef(_Base):
"""
Class for :const:`SREF` GDSII element.
GDS syntax:
.. productionlist::
sref: SREF
: [ELFLAGS]
: [PLEX]
: SNAME
: [`strans`]
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.SREF
_gds_objs = (_ELFLAGS, _PLEX, _SNAME, _STRANS, _XY, _PROPERTIES)
__slots__ = ('struct_name', 'xy', 'elflags', 'strans', 'mag', 'angle',
'properties')
def __init__(self, struct_name, xy):
_Base.__init__(self)
self.struct_name = struct_name
self.xy = xy
def _init_optional(self):
self.elflags = None
self.strans = None
self.mag = None
self.angle = None
self.properties = None
class ARef(_Base):
"""
Class for :const:`AREF` GDSII element.
GDS syntax:
.. productionlist::
aref: AREF
: [ELFLAGS]
: [PLEX]
: SNAME
: [`strans`]
: COLROW
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.AREF
_gds_objs = (_ELFLAGS, _PLEX, _SNAME, _STRANS, _COLROW, _XY, _PROPERTIES)
__slots__ = ('struct_name', 'cols', 'rows', 'xy', 'elflags', 'plex',
'strans', 'mag', 'angle', 'properties')
def __init__(self, struct_name, cols, rows, xy):
_Base.__init__(self)
self.struct_name = struct_name
self.cols = cols
self.rows = rows
self.xy = xy
def _init_optional(self):
self.elflags = None
self.plex = None
self.strans = None
self.mag = None
self.angle = None
self.properties = None
class Text(_Base):
"""
Class for :const:`TEXT` GDSII element.
GDS syntax:
.. productionlist::
text: TEXT
: [ELFLAGS]
: [PLEX]
: LAYER
: TEXTTYPE
: [PRESENTATION]
: [PATHTYPE]
: [WIDTH]
: [`strans`]
: XY
: STRING
: [`properties`]
: ENDEL
"""
_gds_tag = tags.TEXT
_gds_objs = (_ELFLAGS, _PLEX, _LAYER, _TEXTTYPE, _PRESENTATION, _PATHTYPE,
_WIDTH, _STRANS, _XY, _STRING, _PROPERTIES)
__slots__ = ('layer', 'text_type', 'xy', 'string', 'elflags', 'plex',
'presentation', 'path_type', 'width', 'strans', 'mag', 'angle',
'properties')
def __init__(self, layer, text_type, xy, string):
_Base.__init__(self)
self.layer = layer
self.text_type = text_type
self.xy = xy
self.string = string
def _init_optional(self):
self.elflags = None
self.plex = None
self.presentation = None
self.path_type = None
self.width = None
self.strans = None
self.mag = None
self.angle = None
self.properties = None
class Node(_Base):
"""
Class for :const:`NODE` GDSII element.
GDS syntax:
.. productionlist::
node: NODE
: [ELFLAGS]
: [PLEX]
: LAYER
: NODETYPE
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.NODE
_gds_objs = (_ELFLAGS, _PLEX, _LAYER, _NODETYPE, _XY, _PROPERTIES)
__slots__ = ('layer', 'node_type', 'xy', 'elflags', 'plex', 'properties')
def __init__(self, layer, node_type, xy):
_Base.__init__(self)
self.layer = layer
self.node_type = node_type
self.xy = xy
def _init_optional(self):
self.elflags = None
self.plex = None
self.properties = None
class Box(_Base):
"""
Class for :const:`BOX` GDSII element.
GDS syntax:
.. productionlist::
box: BOX
: [ELFLAGS]
: [PLEX]
: LAYER
: BOXTYPE
: XY
: [`properties`]
: ENDEL
"""
_gds_tag = tags.BOX
_gds_objs = (_ELFLAGS, _PLEX, _LAYER, _BOXTYPE, _XY, _PROPERTIES)
__slots__ = ('layer', 'box_type', 'xy', 'elflags', 'plex', 'properties')
def __init__(self, layer, box_type, xy):
_Base.__init__(self)
self.layer = layer
self.box_type = box_type
self.xy = xy
def _init_optional(self):
self.elflags = None
self.plex = None
self.properties = None
_all_elements = (Boundary, Path, SRef, ARef, Text, Node, Box)
_Base._tag_to_class_map = (lambda: dict(((cls._gds_tag, cls) for cls in _all_elements)))()

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.exceptions` --- GDSII exceptions
============================================
This module contains exception classes used in `python-gdsii`.
"""
__all__ = ('FormatError', 'EndOfFileError', 'IncorrectDataSize',
'UnsupportedTagType', 'MissingRecord', 'DataSizeError')
class FormatError(Exception):
"""Base class for all GDSII exceptions."""
class EndOfFileError(FormatError):
"""Raised on unexpected end of file."""
class IncorrectDataSize(FormatError):
"""Raised if data size is incorrect."""
class UnsupportedTagType(FormatError):
"""Raised on unsupported tag type."""
class MissingRecord(FormatError):
"""Raised when required record is not found."""
class DataSizeError(FormatError):
"""Raised when data size is incorrect for a given record."""

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.library` --- interface to a GDSII library
=====================================================
This module contains class that represents a GDSII library.
.. moduleauthor:: Eugeniy Meshcheryakov <eugen@debian.org>
"""
from __future__ import absolute_import
from . import exceptions, record, structure, tags, _records
from datetime import datetime
_HEADER = _records.SimpleRecord('version', tags.HEADER)
_BGNLIB = _records.TimestampsRecord('mod_time', 'acc_time', tags.BGNLIB)
_LIBDIRSIZE = _records.SimpleOptionalRecord('libdirsize', tags.LIBDIRSIZE)
_SRFNAME = _records.OptionalWholeRecord('srfname', tags.SRFNAME)
_LIBSECUR = _records.ACLRecord('acls', tags.LIBSECUR)
_LIBNAME = _records.StringRecord('name', tags.LIBNAME)
_REFLIBS = _records.OptionalWholeRecord('reflibs', tags.REFLIBS)
_FONTS = _records.OptionalWholeRecord('fonts', tags.FONTS)
_ATTRTABLE = _records.OptionalWholeRecord('attrtable', tags.ATTRTABLE)
_GENERATIONS = _records.SimpleOptionalRecord('generations', tags.GENERATIONS)
_FORMAT = _records.FormatRecord('format', 'masks', tags.FORMAT)
_UNITS = _records.UnitsRecord('logical_unit', 'physical_unit', tags.UNITS)
class Library(list):
"""
GDSII library class. This class is derived from :class:`list` and can contain
one one more instances of :class:`gdsii.structure.Structure`.
GDS syntax for the library:
.. productionlist::
library: HEADER
: BGNLIB
: [LIBDIRSIZE]
: [SRFNAME]
: [LIBSECUR]
: LIBNAME
: [REFLIBS]
: [FONTS]
: [ATTRTABLE]
: [GENERATIONS]
: [`format`]
: UNITS
: {`structure`}*
: ENDLIB
format: FORMAT
: [MASK+ ENDMASKS]
"""
_gds_objs = (_HEADER, _BGNLIB, _LIBDIRSIZE, _SRFNAME, _LIBSECUR, _LIBNAME, _REFLIBS,
_FONTS, _ATTRTABLE, _GENERATIONS, _FORMAT, _UNITS)
def __init__(self, version, name, physical_unit, logical_unit, mod_time=None,
acc_time=None):
"""
Initialize the library.
`mod_time` and `acc_time` are set to current UTC time by default.
"""
list.__init__(self)
self.version = version
self.name = name
self.physical_unit = physical_unit
self.logical_unit = logical_unit
self.mod_time = mod_time if mod_time is not None else datetime.utcnow()
self.acc_time = acc_time if acc_time is not None else datetime.utcnow()
self._init_optional()
def _init_optional(self):
"""Initialize optional attributes to None."""
self.libdirsize = None
self.srfname = None
self.acls = None
self.reflibs = None
self.fonts = None
self.attrtable = None
self.generations = None
self.format = None
self.masks = None
@classmethod
def load(cls, stream):
"""
Load a GDS library from a file.
:param stream: a :class:`file` or file-like object opened for reading in binary mode.
:returns: a new library.
"""
self = cls.__new__(cls)
list.__init__(self)
self._init_optional()
gen = record.Reader(stream)
gen.read_next()
for obj in self._gds_objs:
obj.read(self, gen)
# read structures starting with BGNSTR or ENDLIB
rec = gen.current
while True:
if rec.tag == tags.BGNSTR:
self.append(structure.Structure._load(gen))
rec = gen.read_next()
elif rec.tag == tags.ENDLIB:
break
else:
raise exceptions.FormatError('unexpected tag where BGNSTR or ENDLIB are expected: %d', rec.tag)
return self
def save(self, stream):
"""
Save the library into a file.
:param stream: a :class:`file` or file-like object opened for writing in binary mode.
"""
for obj in self._gds_objs:
obj.save(self, stream)
for struc in self:
struc._save(stream)
record.Record(tags.ENDLIB).save(stream)
def __repr__(self):
return '<Library: %s>' % self.name.decode()

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.record` --- GDSII record I/O
========================================
This module contains classes for low-level GDSII I/O.
.. moduleauthor:: Eugeniy Meshcheryakov <eugen@debian.org>
"""
from __future__ import absolute_import
from . import exceptions, tags, types
from datetime import datetime
import math
import struct
__all__ = [
'Record',
'Reader'
]
_RECORD_HEADER_FMT = struct.Struct('>HH')
def _parse_nodata(data):
"""Parse :const:`NODATA` data type. Does nothing."""
def _parse_bitarray(data):
"""
Parse :const:`BITARRAY` data type.
>>> _parse_bitarray(b'ab') # ok, 2 bytes
24930
>>> _parse_bitarray(b'abcd') # too long
Traceback (most recent call last):
...
IncorrectDataSize: BITARRAY
>>> _parse_bitarray('') # zero bytes
Traceback (most recent call last):
...
IncorrectDataSize: BITARRAY
"""
if len(data) != 2:
raise exceptions.IncorrectDataSize('BITARRAY')
(val,) = struct.unpack('>H', data)
return val
def _parse_int2(data):
"""
Parse INT2 data type.
>>> _parse_int2(b'abcd') # ok, even number of bytes
(24930, 25444)
>>> _parse_int2(b'abcde') # odd number of bytes
Traceback (most recent call last):
...
IncorrectDataSize: INT2
>>> _parse_int2(b'') # zero bytes
Traceback (most recent call last):
...
IncorrectDataSize: INT2
"""
data_len = len(data)
if not data_len or (data_len % 2):
raise exceptions.IncorrectDataSize('INT2')
return struct.unpack('>%dh' % (data_len//2), data)
def _parse_int4(data):
"""
Parse INT4 data type.
>>> _parse_int4(b'abcd')
(1633837924,)
>>> _parse_int4(b'abcdef') # not divisible by 4
Traceback (most recent call last):
...
IncorrectDataSize: INT4
>>> _parse_int4(b'') # zero bytes
Traceback (most recent call last):
...
IncorrectDataSize: INT4
"""
data_len = len(data)
if not data_len or (data_len % 4):
raise exceptions.IncorrectDataSize('INT4')
return struct.unpack('>%dl' % (data_len//4), data)
def _int_to_real(num):
"""
Convert REAL8 from internal integer representation to Python reals.
Zeroes:
>>> print(_int_to_real(0x0))
0.0
>>> print(_int_to_real(0x8000000000000000)) # negative
0.0
>>> print(_int_to_real(0xff00000000000000)) # denormalized
0.0
Others:
>>> print(_int_to_real(0x4110000000000000))
1.0
>>> print(_int_to_real(0xC120000000000000))
-2.0
"""
sgn = -1 if 0x8000000000000000 & num else 1
mant = num & 0x00ffffffffffffff
exp = (num >> 56) & 0x7f
return math.ldexp(sgn * mant, 4 * (exp - 64) - 56)
def _parse_real8(data):
"""
Parse REAL8 data type.
>>> _parse_real8(struct.pack('>3Q', 0x0, 0x4110000000000000, 0xC120000000000000))
(0.0, 1.0, -2.0)
>>> _parse_real8(b'') # zero bytes
Traceback (most recent call last):
...
IncorrectDataSize: REAL8
>>> _parse_real8(b'abcd') # not divisible by 8
Traceback (most recent call last):
...
IncorrectDataSize: REAL8
"""
data_len = len(data)
if not data_len or (data_len % 8):
raise exceptions.IncorrectDataSize('REAL8')
ints = struct.unpack('>%dQ' % (data_len//8), data)
return tuple(_int_to_real(n) for n in ints)
def _parse_ascii(data):
r"""
Parse ASCII data type.
>>> _parse_ascii(b'') # zero bytes
Traceback (most recent call last):
...
IncorrectDataSize: ASCII
>>> _parse_ascii(b'abcde') == b'abcde'
True
>>> _parse_ascii(b'abcde\0') == b'abcde' # strips trailing NUL
True
"""
if not len(data):
raise exceptions.IncorrectDataSize('ASCII')
# XXX cross-version compatibility
if data[-1:] == b'\0':
return data[:-1]
return data
_PARSE_FUNCS = {
types.NODATA: _parse_nodata,
types.BITARRAY: _parse_bitarray,
types.INT2: _parse_int2,
types.INT4: _parse_int4,
types.REAL8: _parse_real8,
types.ASCII: _parse_ascii
}
def _pack_nodata(data):
"""
Pack NODATA tag data. Should always return empty string::
>>> packed = _pack_nodata([])
>>> packed == b''
True
>>> len(packed)
0
"""
return b''
def _pack_bitarray(data):
"""
Pack BITARRAY tag data.
>>> packed = _pack_bitarray(123)
>>> packed == struct.pack('>H', 123)
True
>>> len(packed)
2
"""
return struct.pack('>H', data)
def _pack_int2(data):
"""
Pack INT2 tag data.
>>> _pack_int2([1, 2, -3]) == struct.pack('>3h', 1, 2, -3)
True
>>> packed = _pack_int2((1, 2, 3))
>>> packed == struct.pack('>3h', 1, 2, 3)
True
>>> len(packed)
6
"""
size = len(data)
return struct.pack('>{0}h'.format(size), *data)
def _pack_int4(data):
"""
Pack INT4 tag data.
>>> _pack_int4([1, 2, -3]) == struct.pack('>3l', 1, 2, -3)
True
>>> packed = _pack_int4((1, 2, 3))
>>> packed == struct.pack('>3l', 1, 2, 3)
True
>>> len(packed)
12
"""
size = len(data)
return struct.pack('>{0}l'.format(size), *data)
def _real_to_int(fnum):
"""
Convert REAL8 from Python real to internal integer representation.
>>> '0x%016x' % _real_to_int(0.0)
'0x0000000000000000'
>>> print(_int_to_real(_real_to_int(1.0)))
1.0
>>> print(_int_to_real(_real_to_int(-2.0)))
-2.0
>>> print(_int_to_real(_real_to_int(1e-9)))
1e-09
"""
# first convert number to IEEE double and split it in parts
(ieee,) = struct.unpack('=Q', struct.pack('=d', fnum))
sign = ieee & 0x8000000000000000
ieee_exp = (ieee >> 52) & 0x7ff
ieee_mant = ieee & 0xfffffffffffff
if ieee_exp == 0:
# zero or denormals
# TODO maybe handle denormals
return 0
# substract exponent bias
unb_ieee_exp = ieee_exp - 1023
# add leading one and move to GDSII position
ieee_mant_full = (ieee_mant + 0x10000000000000) << 3
# convert exponent to 16-based, +1 for differences in presentation
# of mantissa (1.xxxx in EEEE and 0.1xxxxx in GDSII
exp16, rest = divmod(unb_ieee_exp + 1, 4)
# compensate exponent converion
if rest:
rest = 4 - rest
exp16 += 1
ieee_mant_comp = ieee_mant_full >> rest
# add GDSII exponent bias
exp16_biased = exp16 + 64
# try to fit everything
if exp16_biased < -14:
return 0 # number is too small. FIXME is it possible?
elif exp16_biased < 0:
ieee_mant_comp = ieee_mant_comp >> (exp16_biased * 4)
exp16_biased = 0
elif exp16_biased > 0x7f:
raise exceptions.FormatError('number is to big for REAL8')
return sign | (exp16_biased << 56) | ieee_mant_comp
def _pack_real8(data):
"""
Pack REAL8 tag data.
>>> packed = _pack_real8([0, 1, -1, 0.5, 1e-9])
>>> len(packed)
40
>>> list(map(str, _parse_real8(packed)))
['0.0', '1.0', '-1.0', '0.5', '1e-09']
"""
size = len(data)
return struct.pack('>{0}Q'.format(size), *[_real_to_int(num) for num in data])
def _pack_ascii(data):
r"""
Pack ASCII tag data.
>>> _pack_ascii(b'abcd') == b'abcd'
True
>>> _pack_ascii(b'abc') == b'abc\0'
True
"""
size = len(data)
if size % 2:
return data + b'\0'
return data
_PACK_FUNCS = {
types.NODATA: _pack_nodata,
types.BITARRAY: _pack_bitarray,
types.INT2: _pack_int2,
types.INT4: _pack_int4,
types.REAL8: _pack_real8,
types.ASCII: _pack_ascii
}
class Record(object):
"""
Class for representing a GDSII record with attached data.
Example::
>>> r = Record(tags.STRNAME, 'my_structure')
>>> '%04x' % r.tag
'0606'
>>> r.tag_name
'STRNAME'
>>> r.tag_type
6
>>> r.tag_type_name
'ASCII'
>>> r.data
'my_structure'
>>> r = Record(0xffff, 'xxx') # Unknown tag type
>>> r.tag_name
'0xffff'
>>> r.tag_type_name
'0xff'
"""
__slots__ = ['tag', 'data']
def __init__(self, tag, data=None, points=None, times=None, acls=None):
"""Initialize with tag and parsed data."""
self.tag = tag
if data is not None:
self.data = data
elif points is not None:
new_data = []
# TODO make it faster
for point in points:
new_data.append(point[0])
new_data.append(point[1])
self.data = new_data
elif times is not None:
mod_time = times[0]
acc_time = times[1]
self.data = (
mod_time.year - 1900,
mod_time.month,
mod_time.day,
mod_time.hour,
mod_time.minute,
mod_time.second,
acc_time.year - 1900,
acc_time.month,
acc_time.day,
acc_time.hour,
acc_time.minute,
acc_time.second
)
elif acls is not None:
new_data = []
for acl in acls:
new_data.extend(acl)
self.data = new_data
else:
self.data = None
def check_tag(self, tag):
"""
Checks if current record has the same tag as the given one.
Raises :exc:`MissingRecord` exception otherwise. For example::
>>> rec = Record(tags.STRNAME, b'struct')
>>> rec.check_tag(tags.STRNAME)
>>> rec.check_tag(tags.DATATYPE)
Traceback (most recent call last):
...
MissingRecord: Wanted: 3586, got: STRNAME
"""
if self.tag != tag:
raise exceptions.MissingRecord('Wanted: %s, got: %s'%(tag, self.tag_name))
def check_size(self, size):
"""
Checks if data size equals to the given size.
Raises :exc:`DataSizeError` otherwise. For example::
>>> rec = Record(tags.DATATYPE, (0,))
>>> rec.check_size(1)
>>> rec.check_size(5)
Traceback (most recent call last):
...
DataSizeError: 3586
"""
if len(self.data) != size:
raise exceptions.DataSizeError(self.tag)
@classmethod
def read(cls, stream):
"""
Read a GDSII record from file.
:param stream: GDS file opened for reading in binary mode
:returns: a new :class:`Record` instance
:raises: :exc:`UnsupportedTagType` if data cannot be parsed
:raises: :exc:`EndOfFileError` if end of file is reached
"""
header = stream.read(4)
if not header or len(header) != 4:
raise exceptions.EndOfFileError
data_size, tag = _RECORD_HEADER_FMT.unpack(header)
if data_size < 4:
raise exceptions.IncorrectDataSize('data size is too small')
if data_size % 2:
raise exceptions.IncorrectDataSize('data size is odd')
data_size -= 4 # substract header size
data = stream.read(data_size)
if len(data) != data_size:
raise exceptions.EndOfFileError
tag_type = tags.type_of_tag(tag)
try:
parse_func = _PARSE_FUNCS[tag_type]
except KeyError:
raise exceptions.UnsupportedTagType(tag_type)
return cls(tag, parse_func(data))
def save(self, stream):
"""
Save record to a GDS file.
:param stream: file opened for writing in binary mode
:raises: :exc:`UnsupportedTagType` if tag type is not supported
:raises: :exc:`FormatError` on incorrect data sizes, etc
:raises: whatever :func:`struct.pack` can raise
"""
tag_type = self.tag_type
try:
pack_func = _PACK_FUNCS[tag_type]
except KeyError:
raise exceptions.UnsupportedTagType(tag_type)
packed_data = pack_func(self.data)
record_size = len(packed_data) + 4
if record_size > 0xFFFF:
raise exceptions.FormatError('data size is too big')
header = _RECORD_HEADER_FMT.pack(record_size, self.tag)
stream.write(header)
stream.write(packed_data)
@property
def tag_name(self):
"""Tag name, if known, otherwise tag ID formatted as hex number."""
if self.tag in tags.REV_DICT:
return tags.REV_DICT[self.tag]
return '0x%04x' % self.tag
@property
def tag_type(self):
"""Tag data type ID."""
return tags.type_of_tag(self.tag)
@property
def tag_type_name(self):
"""Tag data type name, if known, and formatted number otherwise."""
tag_type = tags.type_of_tag(self.tag)
if tag_type in types.REV_DICT:
return types.REV_DICT[tag_type]
return '0x%02x' % tag_type
@property
def points(self):
"""
Convert data to list of points. Useful for :const:`XY` record.
Raises :exc:`DataSizeError` if data size is incorrect.
For example::
>>> r = Record(tags.XY, [0, 1, 2, 3])
>>> r.points
[(0, 1), (2, 3)]
>>> r = Record(tags.XY, []) # not allowed
>>> r.points
Traceback (most recent call last):
...
DataSizeError: 4099
>>> r = Record(tags.XY, [1, 2, 3]) # odd number of coordinates
>>> r.points
Traceback (most recent call last):
...
DataSizeError: 4099
"""
data_size = len(self.data)
if not data_size or (data_size % 2):
raise exceptions.DataSizeError(self.tag)
return [(self.data[i], self.data[i+1]) for i in range(0, data_size, 2)]
@property
def times(self):
"""
Convert data to tuple ``(modification time, access time)``.
Useful for :const:`BGNLIB` and :const:`BGNSTR`.
>>> r = Record(tags.BGNLIB, [100, 1, 1, 1, 2, 3, 110, 8, 14, 21, 10, 35])
>>> print(r.times[0].isoformat())
2000-01-01T01:02:03
>>> print(r.times[1].isoformat())
2010-08-14T21:10:35
>>> r = Record(tags.BGNLIB, [100, 1, 1, 1, 2, 3]) # wrong data length
>>> r.times
Traceback (most recent call last):
...
DataSizeError: 258
"""
if len(self.data) != 12:
raise exceptions.DataSizeError(self.tag)
return (datetime(self.data[0]+1900, *self.data[1:6]),
datetime(self.data[6]+1900, *self.data[7:12]))
@property
def acls(self):
"""
Convert data to list of acls ``(GID, UID, ACCESS)``.
Useful for :const:`LIBSECUR`.
>>> r = Record(tags.LIBSECUR, [1, 2, 3, 4, 5, 6])
>>> r.acls
[(1, 2, 3), (4, 5, 6)]
>>> r = Record(tags.LIBSECUR, [1, 2, 3, 4]) # wrong data size
>>> r.acls
Traceback (most recent call last):
...
DataSizeError: 15106
"""
if len(self.data) % 3:
raise exceptions.DataSizeError(self.tag)
return list(zip(self.data[::3], self.data[1::3], self.data[2::3]))
@classmethod
def iterate(cls, stream):
"""
Generator function for iterating over all records in a GDSII file.
Yields :class:`Record` objects.
:param stream: GDS file opened for reading in binary mode
"""
last = False
while not last:
rec = cls.read(stream)
if rec.tag == tags.ENDLIB:
last = True
yield rec
class Reader(object):
"""Class for buffered reading of Records"""
__slots__ = ('current', 'stream')
def __init__(self, stream):
self.stream = stream
def read_next(self):
"""Read and return next record from stream."""
self.current = Record.read(self.stream)
return self.current
if __name__ == '__main__':
import doctest
doctest.testmod(optionflags=doctest.IGNORE_EXCEPTION_DETAIL)

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.structure` --- interface to a GDSII structure
=========================================================
This module contains class that represents a GDSII structure.
.. moduleauthor:: Eugeniy Meshcheryakov <eugen@debian.org>
"""
from __future__ import absolute_import
from . import elements, record, tags, _records
from datetime import datetime
_STRNAME = _records.StringRecord('name', tags.STRNAME)
_BGNSTR = _records.TimestampsRecord('mod_time', 'acc_time', tags.BGNSTR)
_STRCLASS = _records.SimpleOptionalRecord('strclass', tags.STRCLASS)
class Structure(list):
"""
GDSII structure class. This class is derived for :class:`list` and can
contain one or more elements from :mod:`gdsii.elements`.
GDS syntax for the structure:
.. productionlist::
structure: BGNSTR
: STRNAME
: [STRCLASS]
: {`element`}*
: ENDSTR
"""
_gds_objs = (_BGNSTR, _STRNAME, _STRCLASS)
def __init__(self, name, mod_time=None, acc_time=None):
"""
Initialize the structure.
`mod_time` and `acc_time` are set to current UTC time by default.
"""
list.__init__(self)
self.name = name
self.mod_time = mod_time if mod_time is not None else datetime.utcnow()
self.acc_time = acc_time if acc_time is not None else datetime.utcnow()
def _init_optional(self):
"""Initialize optional attributes to None."""
self.strclass = None
@classmethod
def _load(cls, gen):
self = cls.__new__(cls)
list.__init__(self)
self._init_optional()
for obj in self._gds_objs:
obj.read(self, gen)
# read elements till ENDSTR
while gen.current.tag != tags.ENDSTR:
self.append(elements._Base._load(gen))
return self
def _save(self, stream):
for obj in self._gds_objs:
obj.save(self, stream)
for elem in self:
elem._save(stream)
record.Record(tags.ENDSTR).save(stream)
def __repr__(self):
return '<Structure: %s>' % self.name.decode()

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.tags` --- definitions of GDSII tags
===============================================
This module containing definitions of GDSII record tags.
.. moduleauthor:: Eugeniy Meshcheryakov <eugen@debian.org>
"""
DICT = {
'HEADER': 0x0002,
'BGNLIB': 0x0102,
'LIBNAME': 0x0206,
'UNITS': 0x0305,
'ENDLIB': 0x0400,
'BGNSTR': 0x0502,
'STRNAME': 0x0606,
'ENDSTR': 0x0700,
'BOUNDARY': 0x0800,
'PATH': 0x0900,
'SREF': 0x0A00,
'AREF': 0x0B00,
'TEXT': 0x0C00,
'LAYER': 0x0D02,
'DATATYPE': 0x0E02,
'WIDTH': 0x0F03,
'XY': 0x1003,
'ENDEL': 0x1100,
'SNAME': 0x1206,
'COLROW': 0x1302,
'TEXTNODE': 0x1400,
'NODE': 0x1500,
'TEXTTYPE': 0x1602,
'PRESENTATION': 0x1701,
# SPACING: 0x18??
'STRING': 0x1906,
'STRANS': 0x1A01,
'MAG': 0x1B05,
'ANGLE': 0x1C05,
# UINTEGER: 0x1D??
# USTRING: 0x1E??
'REFLIBS': 0x1F06,
'FONTS': 0x2006,
'PATHTYPE': 0x2102,
'GENERATIONS': 0x2202,
'ATTRTABLE': 0x2306,
'STYPTABLE': 0x2406,
'STRTYPE': 0x2502,
'ELFLAGS': 0x2601,
'ELKEY': 0x2703,
# LINKTYPE: 0x28??
# LINKKEYS: 0x29??
'NODETYPE': 0x2A02,
'PROPATTR': 0x2B02,
'PROPVALUE': 0x2C06,
'BOX': 0x2D00,
'BOXTYPE': 0x2E02,
'PLEX': 0x2F03,
'BGNEXTN': 0x3003,
'ENDEXTN': 0x3103,
'TAPENUM': 0x3202,
'TAPECODE': 0x3302,
'STRCLASS': 0x3401,
# RESERVED: 0x3503
'FORMAT': 0x3602,
'MASK': 0x3706,
'ENDMASKS': 0x3800,
'LIBDIRSIZE': 0x3902,
'SRFNAME': 0x3A06,
'LIBSECUR': 0x3B02,
# Types used only with Custom Plus
'BORDER': 0x3C00,
'SOFTFENCE': 0x3D00,
'HARDFENCE': 0x3E00,
'SOFTWIRE': 0x3F00,
'HARDWIRE': 0x4000,
'PATHPORT': 0x4100,
'NODEPORT': 0x4200,
'USERCONSTRAINT': 0x4300,
'SPACERERROR': 0x4400,
'CONTACT': 0x4500
}
REV_DICT = {}
for (key, value) in DICT.items():
globals()[key] = value
REV_DICT[value] = key
del key, value
def type_of_tag(tag):
"""
Returns type of a tag.
:param tag: tag ID
:type tag: int
:rtype: int
Examples:
>>> type_of_tag(HEADER)
2
>>> type_of_tag(MASK)
6
"""
return tag & 0xff
if __name__ == '__main__':
import doctest
doctest.testmod()

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# -*- coding: utf-8 -*-
#
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
:mod:`gdsii.types` --- definitions of GDSII data types
======================================================
This module contains definitions of GDSII data types.
"""
DICT = {
'NODATA': 0,
'BITARRAY': 1,
'INT2': 2,
'INT4': 3,
'REAL4': 4, # not used
'REAL8': 5,
'ASCII': 6
}
REV_DICT = {}
for (key, value) in DICT.items():
globals()[key] = value
REV_DICT[value] = key
del key, value

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#! /usr/bin/python
# -*- coding: utf-8 -*-
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
# This file is licensed under GNU Lesser General Public License version 3 or later.
"""Demonstration program for basic gdsii reading function."""
from __future__ import print_function
from gdsii import types
from gdsii.record import Record
import sys
def show_data(rec):
"""Shows data in a human-readable format."""
if rec.tag_type == types.ASCII:
return '"%s"' % rec.data.decode() # TODO escape
elif rec.tag_type == types.BITARRAY:
return str(rec.data)
return ', '.join('{0}'.format(i) for i in rec.data)
def main(name):
with open(name, 'rb') as a_file:
for rec in Record.iterate(a_file):
if rec.tag_type == types.NODATA:
print(rec.tag_name)
else:
print('%s: %s' % (rec.tag_name, show_data(rec)))
def usage(prog):
print('Usage: %s <file.gds>' % prog)
if __name__ == '__main__':
if (len(sys.argv) > 1):
main(sys.argv[1])
else:
usage(sys.argv[0])
sys.exit(1)
sys.exit(0)

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#! /usr/bin/python
# -*- coding: utf-8 -*-
# Copyright © 2010 Eugeniy Meshcheryakov <eugen@debian.org>
# This file is licensed under GNU Lesser General Public License version 3 or later.
from __future__ import print_function
from gdsii.library import Library
from gdsii import elements
import sys
from yaml.dumper import Dumper
from yaml import events
# standard tags
STR = 'tag:yaml.org,2002:str'
TIMESTAMP = 'tag:yaml.org,2002:timestamp'
FLOAT = 'tag:yaml.org,2002:float'
INT = 'tag:yaml.org,2002:int'
SEQ = 'tag:yaml.org,2002:seq'
MAP = 'tag:yaml.org,2002:map'
# non-standard tags
LIBRARY = 'tag:gdsii,2010:library'
STRUCTURE = 'tag:gdsii,2010:structure'
BOUNDARY = 'tag:gdsii,2010:element:boundary'
PATH = 'tag:gdsii,2010:element:path'
SREF = 'tag:gdsii,2010:element:sref'
AREF = 'tag:gdsii,2010:element:aref'
TEXT = 'tag:gdsii,2010:element:text'
NODE = 'tag:gdsii,2010:element:node'
BOX = 'tag:gdsii,2010:element:box'
def emit_string(dumper, prop, tag, value):
dumper.emit(events.ScalarEvent(None, STR, (True, False), prop))
dumper.emit(events.ScalarEvent(None, tag, (True, False), value))
def start_named_seq(dumper, name):
dumper.emit(events.ScalarEvent(None, STR, (True, False), name))
dumper.emit(events.SequenceStartEvent(None, SEQ, True))
def end_named_seq(dumper):
dumper.emit(events.SequenceEndEvent())
def simple_dumper(name, tag):
def dump_fn(dumper, obj):
value = getattr(obj, name)
emit_string(dumper, name, tag, str(value))
return dump_fn
def simple_string_dumper(name):
def dump_fn(dumper, obj):
value = getattr(obj, name)
emit_string(dumper, name, STR, value.decode())
return dump_fn
def timestamp_dumper(name):
def dump_fn(dumper, obj):
value = getattr(obj, name)
emit_string(dumper, name, TIMESTAMP, value.isoformat(' '))
return dump_fn
def optional_dumper(name, tag):
def dump_fn(dumper, obj):
try:
value = getattr(obj, name)
except AttributeError:
value = None
if value is not None:
emit_string(dumper, name, tag, str(value))
return dump_fn
def optional_flags_dumper(name, tag):
def dump_fn(dumper, obj):
try:
value = getattr(obj, name)
except AttributeError:
value = None
if value is not None:
emit_string(dumper, name, tag, '0x%x'%value)
return dump_fn
def xy_dumper(name):
def dump_fn(dumper, obj):
points = getattr(obj, name)
start_named_seq(dumper, name)
for point in points:
dumper.emit(events.SequenceStartEvent(None, SEQ, True, flow_style=True))
dumper.emit(events.ScalarEvent(None, INT, (True, False), str(point[0])))
dumper.emit(events.ScalarEvent(None, INT, (True, False), str(point[1])))
dumper.emit(events.SequenceEndEvent())
end_named_seq(dumper)
return dump_fn
def properties_dumper(name):
def dump_fn(dumper, obj):
properties = getattr(obj, name)
if (properties):
start_named_seq(dumper, name)
for (prop, value) in properties:
dumper.emit(events.MappingStartEvent(None, MAP, True))
dumper.emit(events.ScalarEvent(None, INT, (True, False), str(prop)))
dumper.emit(events.ScalarEvent(None, STR, (True, False), value.decode()))
dumper.emit(events.MappingEndEvent())
end_named_seq(dumper)
return dump_fn
def strans_dumper(name):
my_dumper = optional_flags_dumper('strans', INT)
mag = optional_dumper('mag', FLOAT)
angle = optional_dumper('angle', FLOAT)
def dump_fn(dumper, obj):
try:
value = getattr(obj, name)
except AttributeError:
value = None
if value is not None:
my_dumper(dumper, obj)
mag(dumper, obj)
angle(dumper, obj)
return dump_fn
elflags = optional_flags_dumper('elflags', INT)
plex = optional_dumper('plex', INT)
layer = simple_dumper('layer', INT)
data_type = simple_dumper('data_type', INT)
path_type = optional_dumper('path_type', INT)
width = optional_dumper('width', INT)
bgn_extn = optional_dumper('bgn_extn', INT)
end_extn = optional_dumper('end_extn', INT)
struct_name = simple_string_dumper('struct_name')
strans = strans_dumper('strans')
cols = simple_dumper('cols', INT)
rows = simple_dumper('rows', INT)
text_type = optional_dumper('text_type', INT)
presentation = optional_flags_dumper('presentation', INT)
string = simple_string_dumper('string')
node_type = simple_dumper('node_type', INT)
box_type = simple_dumper('box_type', INT)
xy = xy_dumper('xy')
properties = properties_dumper('properties')
DUMPERS = (
(elements.Boundary, BOUNDARY, (elflags, plex, layer, data_type, xy, properties)),
(elements.Path, PATH, (elflags, plex, layer, data_type, path_type, width, bgn_extn, end_extn, xy, properties)),
(elements.SRef, SREF, (elflags, plex, struct_name, strans, xy, properties)),
(elements.ARef, AREF, (elflags, plex, struct_name, strans, cols, rows, xy, properties)),
(elements.Text, TEXT, (elflags, plex, layer, text_type, presentation, path_type, width, strans, xy, string, properties)),
(elements.Node, NODE, (elflags, plex, layer, node_type, xy)),
(elements.Box, BOX, (elflags, plex, layer, box_type, xy, properties))
)
def dump_element(dumper, elem):
for rec in DUMPERS:
if isinstance(elem, rec[0]):
tag = rec[1]
dumpers = rec[2]
dumper.emit(events.MappingStartEvent(None, tag, False))
for fn in dumpers:
fn(dumper, elem)
dumper.emit(events.MappingEndEvent())
break
else:
raise Exception('Unsupported element: %s' % str(elem))
name = simple_string_dumper('name')
mod_time = timestamp_dumper('mod_time')
acc_time = timestamp_dumper('acc_time')
strclass = optional_dumper('strclass', INT)
def dump_structure(dumper, struc):
dumper.emit(events.MappingStartEvent(None, STRUCTURE, False))
name(dumper, struc)
mod_time(dumper, struc)
acc_time(dumper, struc)
strclass(dumper, struc)
start_named_seq(dumper, 'elements')
for elem in struc:
dump_element(dumper, elem)
end_named_seq(dumper)
dumper.emit(events.MappingEndEvent())
physical_unit = simple_dumper('physical_unit', FLOAT)
logical_unit = simple_dumper('logical_unit', FLOAT)
libdirsize = optional_dumper('libdirsize', INT)
def dump_library(dumper, lib):
dumper.emit(events.StreamStartEvent(encoding='utf-8'))
dumper.emit(events.DocumentStartEvent(explicit=False))
dumper.emit(events.MappingStartEvent(None, LIBRARY, False))
emit_string(dumper, 'version', INT, '0x%x'%lib.version)
name(dumper, lib)
mod_time(dumper, lib)
acc_time(dumper, lib)
libdirsize(dumper, lib)
# TODO
physical_unit(dumper, lib)
logical_unit(dumper, lib)
start_named_seq(dumper, 'structures')
for struc in lib:
dump_structure(dumper, struc)
end_named_seq(dumper)
dumper.emit(events.MappingEndEvent())
dumper.emit(events.DocumentEndEvent(explicit=False))
dumper.emit(events.StreamEndEvent())
def main(name):
with open(name, 'rb') as a_file:
lib = Library.load(stream=a_file)
dumper = Dumper(sys.stdout)
dump_library(dumper, lib)
def usage(prog):
print('Usage: %s <file.gds>' % prog)
if __name__ == '__main__':
if (len(sys.argv) > 1):
main(sys.argv[1])
else:
usage(sys.argv[0])
sys.exit(1)
sys.exit(0)

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#! /usr/bin/python
# -*- coding: utf-8 -*-
# Copyright © 2011 Eugeniy Meshcheryakov <eugen@debian.org>
# This file is licensed under GNU Lesser General Public License version 3 or later.
"""Converter from format produced by gds2txt back to GDSII."""
from __future__ import print_function
from gdsii import tags, types
from gdsii.record import Record
import sys
import getopt
import re
def parse_file(ifile, ofile):
rexp = re.compile(r'^(?P<tag>[^:]+)(:\s*(?P<rest>.*))?$')
lineno = 1
for line in ifile:
stripped = line.strip()
m = rexp.match(stripped)
if not m:
print('Parse error at line {0}'.format(lineno), file=sys.stderr)
sys.exit(1)
tag_name = m.group('tag')
rest = m.group('rest')
tag = tags.DICT[tag_name]
tag_type = tags.type_of_tag(tag)
if tag_type == types.NODATA:
data = None
elif tag_type == types.ASCII:
data = rest[1:-1].encode() # FIXME
elif tag_type == types.BITARRAY:
data = int(rest)
elif tag_type == types.REAL8:
data = [float(s) for s in rest.split(',')]
elif tag_type == types.INT2 or tag_type == types.INT4:
data = [int(s) for s in rest.split(',')]
else:
raise Exception('Unsupported type')
rec = Record(tag, data)
rec.save(ofile)
lineno += 1
def main(argv):
opts, args = getopt.gnu_getopt(argv[1:], 'o:')
if len(opts) != 1 or opts[0][0] != '-o' or len(args) > 1:
usage(argv[0])
sys.exit(2)
with open(opts[0][1], 'wb') as ofile:
if len(args) == 0:
parse_file(sys.stdin, ofile)
else:
with open(args[0], 'r') as ifile:
parse_file(ifile, ofile)
def usage(prog):
print('Usage: %s -o <file.gds> [<input.txt>]' % prog)
if __name__ == '__main__':
if len(sys.argv) > 1:
main(sys.argv)
else:
usage(sys.argv[0])
sys.exit(1)

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from distutils.core import setup
long_desc = """
python-gdsii is a library that can be used to read, create, modify and save
GDSII files. It supports both low-level record I/O and high level interface to
GDSII libraries (databases), structures, and elements.
This package also includes scripts that can be used to convert binary GDS file
to a simple text format (gds2txt), YAML (gds2yaml), and from text fromat back
to GDSII (txt2gds).
"""
setup(
name = 'python-gdsii',
version = '0.2.1',
description = 'GDSII manipulation libaray',
long_description = long_desc,
author = 'Eugeniy Meshcheryakov',
author_email = 'eugen@debian.org',
url = 'http://www.gitorious.org/python-gdsii',
packages = ['gdsii'],
scripts = [
'scripts/gds2txt',
'scripts/gds2yaml',
'scripts/txt2gds',
],
classifiers = [
'Development Status :: 3 - Alpha',
'Environment :: Console',
'Intended Audience :: Developers',
'License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)',
'Programming Language :: Python',
'Topic :: Scientific/Engineering :: Electronic Design Automation (EDA)',
'Topic :: Software Development :: Libraries :: Python Modules'
],
license = 'LGPL-3+',
platforms = 'any'
)

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HEADER: 5
BGNLIB: 110, 8, 17, 14, 22, 22, 110, 8, 17, 14, 36, 21
LIBNAME: "TEST.DB"
UNITS: 0.001, 1e-09
BGNSTR: 70, 1, 1, 1, 0, 0, 110, 8, 17, 14, 35, 55
STRNAME: "test_struc1"
BOUNDARY
LAYER: 34
DATATYPE: 0
XY: 33100, -198900, 48100, -198900, 48100, -186800, 33100, -186800, 33100, -198900
ENDEL
PATH
LAYER: 44
DATATYPE: 0
PATHTYPE: 0
WIDTH: 15000
XY: -125000, 0, -125000, -52000, -52000, -125000, 13100, -125000
PROPATTR: 1
PROPVALUE: "test property 1"
PROPATTR: 2
PROPVALUE: "test property 2"
ENDEL
ENDSTR
ENDLIB

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import unittest
from gdsii import library, elements
import os.path
class TestLibraryLoad(unittest.TestCase):
def setUp(self):
file_name = os.path.join(os.path.dirname(__file__), 'data', 'test1.gds')
with open(file_name, 'rb') as stream:
self.library = library.Library.load(stream)
def test_library(self):
library = self.library
self.assertEqual(library.version, 5)
self.assertEqual(library.name, b'TEST.DB')
self.assertEqual(library.mod_time.isoformat(), '2010-08-17T14:22:22')
self.assertEqual(library.acc_time.isoformat(), '2010-08-17T14:36:21')
self.assertAlmostEqual(library.physical_unit, 1e-9)
self.assertAlmostEqual(library.logical_unit, 0.001)
def test_structure(self):
library = self.library
self.assertEqual(len(library), 1)
struc = library[0]
self.assertEqual(struc.name, b'test_struc1')
self.assertEqual(struc.mod_time.isoformat(), '1970-01-01T01:00:00')
self.assertEqual(struc.acc_time.isoformat(), '2010-08-17T14:35:55')
self.assertEqual(struc.strclass, None)
def test_elements(self):
struc = self.library[0]
self.assertEqual(len(struc), 2)
elem = struc[0]
self.assertTrue(isinstance(elem, elements.Boundary))
self.assertEqual(elem.layer, 34)
self.assertEqual(elem.data_type, 0)
self.assertEqual(elem.xy, [(33100, -198900), (48100, -198900), (48100, -186800),
(33100, -186800), (33100, -198900)])
self.assertEqual(elem.properties, []) # TODO it should not be so
elem = struc[1]
self.assertTrue(isinstance(elem, elements.Path))
self.assertEqual(elem.layer, 44)
self.assertEqual(elem.data_type, 0)
self.assertEqual(elem.path_type, 0)
self.assertEqual(elem.width, 15000)
self.assertEqual(elem.xy, [(-125000, 0), (-125000, -52000), (-52000, -125000), (13100, -125000)])
self.assertEqual(len(elem.properties), 2)
self.assertEqual(elem.properties[0], (1, b'test property 1'))
self.assertEqual(elem.properties[1], (2, b'test property 2'))
test_cases = (TestLibraryLoad,)
def load_tests(loader, tests, pattern):
suite = unittest.TestSuite()
for test_class in test_cases:
tests = loader.loadTestsFromTestCase(test_class)
suite.addTests(tests)
return suite
if __name__ == '__main__':
unittest.main()

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import unittest
from gdsii.record import _parse_real8, _pack_real8, _int_to_real, _real_to_int
from gdsii import exceptions
import struct
class TestReal8(unittest.TestCase):
data = {
0x4110000000000000: 1.0,
0x4120000000000000: 2.0,
0x4130000000000000: 3.0,
0xC110000000000000: -1.0,
0xC120000000000000: -2.0,
0xC130000000000000: -3.0,
0x4080000000000000: 0.5,
0x4099999999999999: 0.6,
0x40B3333333333333: 0.7,
0x4118000000000000: 1.5,
0x4119999999999999: 1.6,
0x411B333333333333: 1.7,
0x0000000000000000: 0.0,
0x41A0000000000000: 10.0,
0x4264000000000000: 100.0,
0x433E800000000000: 1000.0, # there is error in doc?
0x4427100000000000: 10000.0,
0x45186A0000000000: 100000.0
}
def test_from_int(self):
for int_val, real_val in self.data.items():
self.assertAlmostEqual(_int_to_real(int_val), real_val)
def test_to_int(self):
for int_val, real_val in self.data.items():
self.assertAlmostEqual(real_val, _int_to_real(_real_to_int(real_val)))
def test_parse(self):
packed_data = struct.pack('>{0}Q'.format(len(self.data)), *self.data.keys())
unpacked = _parse_real8(packed_data)
expected_results = list(self.data.values())
self.assertEqual(len(unpacked), len(expected_results))
for i in range(len(unpacked)):
self.assertAlmostEqual(unpacked[i], expected_results[i])
def test_pack(self):
packed_data = _pack_real8(self.data.values())
unpacked = _parse_real8(packed_data)
expected_results = list(self.data.values())
self.assertEqual(len(unpacked), len(expected_results))
for i in range(len(unpacked)):
self.assertAlmostEqual(unpacked[i], expected_results[i])
def test_exceptions(self):
for i in range(8):
self.assertRaises(exceptions.IncorrectDataSize, _parse_real8, b' '*i)
test_cases = (TestReal8,)
def load_tests(loader, tests, pattern):
suite = unittest.TestSuite()
for test_class in test_cases:
tests = loader.loadTestsFromTestCase(test_class)
suite.addTests(tests)
return suite
if __name__ == '__main__':
unittest.main()