- The MAG reader now has access to the details of the proposed
technology (set in KLayout), specifically inside library paths
($(tech_name), $(tech_dir)). This allows setting the MAG reader
path relative to the technology path.
- If no specific technology is set before MAG files are read and
the technology listed there is found in KLayout, KLayout will
attach the layout to this technology.
- OASIS layers are turned into pure layer name (not lxdy_name) for
MAG output
- Boxes of instances had been incorrect
- consistent naming of cell files in presence of special chars
- MAG writer output name does not need to match a cell name
(this file is not written in this case, but the path and extension
are taken from it). A warning is issued in this case.
- Strings for layer and cell names are normalized (special chars, UTF8)
- Cell duplicates won't be produced but existing cells are reused.
This enables "incremental reads".
- force lower-case layer names to allow CIF/MAG loop (CIF needs
upper-case layer names, MAG doesn't)
- reverted CIF reader to standard
- new options for writer: tech, "zero timestamp".
- file name MUST be consistent with one cell name.
Reason: it's not possible to derive the initial
cell from the given options, so without the file name
being consistent, we can't know what to write there.
Basically the file name rather supplies the path.
The change is to allow lower-case cell and layer names when they
are separated from the command with a blank. So
"Layername XZY;": "L" is the command, "ayername" is ignored
BUT:
"L xyz;": "xyz" is not part of the command, but the layername.
Same for "DS".
This is a deviation from the "standard", but a useful one. Otherwise
case sensitivity cannot be maintained anymore in a CIF/Magic loop.
The implementation uses extrapolation of strings in the
"Expressions" framework.
There is how:
* $(tech_name) -> substituted by the technology name
* $(tech_dir) -> substituted by the directory the technology file is stored in
* $(tech_file) -> substituted by the absolute path to the tech file
* $(appdata_path) -> substituted by KLayout's home directory (e.g. ~/.klayout)
* $(env('X')) -> substituted by the environment variable $X
The problem is solved by always producing subcircuits for cell
instances, even if there are no connections.
The netlist comparer had to be adjusted too because subcircuits
without pins were used for representing "unknown" subcircuit pairing.
In addition, this patch should lead to a better matching of
parallel subcircuit configurations where two different subcircuits
are entirely parallel.