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Implemented the hash checking of generate_headers.py to avoid rebuilding unnecessarily (https://github.com/CoolProp/CoolProp/issues/34)

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Signed-off-by: Ian bell <ian.h.bell@gmail.com>
This commit is contained in:
Ian bell
2014-05-20 12:42:13 +02:00
parent c18e0801c9
commit bb10d0c1ab
2 changed files with 74 additions and 43 deletions
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32
dev/JSON_to_CPP.py
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@@ -6,6 +6,7 @@ import struct
import os
import argparse, textwrap
import sys
import generate_headers
# 0: Input file path relative to dev folder
# 1: Output file path relative to include folder
@@ -16,7 +17,7 @@ values = [
('mixtures/mixture_reducing_parameters.json', 'mixture_reducing_parameters_JSON.h', 'mixture_reducing_parameters_JSON')
]
def TO_CPP(root_dir):
def TO_CPP(root_dir, hashes):
def to_chunks(l, n):
if n<1:
n=1
@@ -48,17 +49,26 @@ def TO_CPP(root_dir):
# Put the lines back together again
# The chunks are joined together with commas, and then EOL are used to join the rest
hex_string = ',\n'.join([', '.join(chunk) for chunk in chunks])
# Check if hash is up to date based on using variable as key
if variable not in hashes or (variable in hashes and hashes[variable] != generate_headers.get_hash(hex_string)):
# Generate the output string
output = '// File generated by the script dev/JSON_to_CPP.py on '+ str(datetime.now()) + '\n\n'
output += '// JSON file encoded in binary form\n'
output += 'const unsigned char '+variable+'_binary[] = {\n' + hex_string + '\n};'+'\n\n'
output += '// Combined into a single std::string \n'
output += 'std::string {v:s}({v:s}_binary, {v:s}_binary + sizeof({v:s}_binary)/sizeof({v:s}_binary[0]));'.format(v = variable)
f = open(os.path.join(root_dir,'include',outfile), 'w')
f.write(output)
f.close()
# Generate the output string
output = '// File generated by the script dev/JSON_to_CPP.py on '+ str(datetime.now()) + '\n\n'
output += '// JSON file encoded in binary form\n'
output += 'const unsigned char '+variable+'_binary[] = {\n' + hex_string + '\n};'+'\n\n'
output += '// Combined into a single std::string \n'
output += 'std::string {v:s}({v:s}_binary, {v:s}_binary + sizeof({v:s}_binary)/sizeof({v:s}_binary[0]));'.format(v = variable)
# Write it to file
f = open(os.path.join(root_dir,'include',outfile), 'w')
f.write(output)
f.close()
# Store the hash of the data that was written to file (not including the header)
hashes[variable] = generate_headers.get_hash(hex_string)
else:
print(outfile + 'is up to date')
if __name__=='__main__':
parser = argparse.ArgumentParser(