pym4
A GNU m4 1.4 compatible macro processor written in pure Python: no compiler,
no m4.exe, no dependencies.
pym4 follows GNU m4's expansion model (rescanning, argument collection, quoting,
comments, diversions) and implements the GNU builtins, including eval,
regexp/patsubst with GNU regex semantics, translit, format, include
and M4PATH. The shell builtins syscmd and esyscmd are disabled on purpose.
It was written to run Circuit Macros without installing GNU m4, and is one part of a pure-Python toolchain:
| Package | Replaces | Role |
|---|---|---|
| pym4 | GNU m4 | m4 → pic |
| pppic | dpic -p | pic → PSTricks |
| m4cmpy | m4cm.py | m4 → PDF / PNG / JPG / SVG / EPS |
Install
pip install pym4
Use
Command line (a subset of GNU m4's options):
pym4 [-I DIR] [-D NAME[=VALUE]] [-U NAME] [-Q] [-o OUTPUT] [FILE ...]
pym4 -I path/to/circuit_macros examples/circuit.m4
Python:
from pym4 import M4Lite, expand
print(expand("define(`greet', `Hello, $1!')greet(`world')"))
m4 = M4Lite(include_dirs=["path/to/circuit_macros"])
pic = m4.expand(open("circuit.m4").read(), "circuit.m4")
Tests
python -m unittest discover -s tests -v
CI also checks that pym4 gives the same output as GNU m4 for the files in examples, including a Circuit Macros diagram.
Licence
GPL-3.0-or-later; see LICENSE. pym4 reproduces the behaviour of GNU m4, Copyright (C) Free Software Foundation, Inc.
1 maintainer
Metadata
1 maintainer
Release files for pym4 1.0.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
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| pym4-1.0.0.tar.gz | 29.3 kB | With provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pym4-1.0.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 56.8 kB
Release files / pym4-1.0.0.tar.gz
| Download URL | pym4-1.0.0.tar.gz |
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| Size | 29.3 kB |
| Tags | Source |
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| Tags | Python 3 |
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