utils/conv_gen.py: improve application flexibility
This change makes the conv_gen application more interactive
and flexible, allowing to generate not only code definitions
but also the test vectors and header files in the future.
Moreover, it becomes possible to select exact code family,
such as GSM, GMR etc.
Change-Id: I0b476b00234c17f78b41d695cf3bfd13edb64c28
diff --git a/utils/conv_gen.py b/utils/conv_gen.py
index 60580ed..e6eb50c 100644
--- a/utils/conv_gen.py
+++ b/utils/conv_gen.py
@@ -23,7 +23,7 @@
*/
"""
-import sys, os, math
+import sys, os, math, argparse
from functools import reduce
import conv_codes_gsm
@@ -254,13 +254,15 @@
code = ConvolutionalCode(0, polys, name = name)
code.print_state_and_output(fi)
-def generate_codes(codes, path, prefix):
+def generate_codes(codes, path, prefix, name):
# Open a new file for writing
- f = open(os.path.join(path, prefix + "_conv.c"), 'w')
+ f = open(os.path.join(path, name), 'w')
f.write(mod_license + "\n")
f.write("#include <stdint.h>\n")
f.write("#include <osmocom/core/conv.h>\n\n")
+ sys.stderr.write("Generating convolutional codes...\n")
+
# Print shared tables first
if hasattr(codes, "shared_polys"):
print_shared(f, codes.shared_polys)
@@ -279,12 +281,40 @@
code.gen_tables(prefix, f, shared_tables = shared)
+def parse_argv():
+ parser = argparse.ArgumentParser()
+
+ # Positional arguments
+ parser.add_argument("action",
+ help = "what to generate",
+ choices = ["gen_codes"])
+ parser.add_argument("family",
+ help = "convolutional code family",
+ choices = ["gsm"])
+
+ # Optional arguments
+ parser.add_argument("-p", "--prefix",
+ help = "internal naming prefix")
+ parser.add_argument("-n", "--target-name",
+ help = "target name for generated file")
+ parser.add_argument("-P", "--target-path",
+ help = "target path for generated file")
+
+ return parser.parse_args()
+
if __name__ == '__main__':
- path = sys.argv[1] if len(sys.argv) > 1 else os.getcwd()
+ # Parse and verify arguments
+ argv = parse_argv()
+ path = argv.target_path or os.getcwd()
- sys.stderr.write("Generating convolutional codes...\n")
+ # Determine convolutional code family
+ if argv.family == "gsm":
+ codes = conv_codes_gsm
+ prefix = argv.prefix or "gsm0503"
- # Generate GSM specific codes
- generate_codes(conv_codes_gsm, path, "gsm0503")
+ # What to generate?
+ if argv.action == "gen_codes":
+ name = argv.target_name or prefix + "_conv.c"
+ generate_codes(codes, path, prefix, name)
sys.stderr.write("Generation complete.\n")