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#!/usr/bin/env python3
#
# Creates the amalgamated source files.
#
import zipfile
import sys
import os.path
import subprocess
import os
import re
import shutil
import datetime
if sys.version_info[0] < 3:
sys.stdout.write('Sorry, requires Python 3.x or better\n')
sys.exit(1)
SCRIPTPATH = os.path.dirname(os.path.abspath(sys.argv[0]))
PROJECTPATH = os.path.dirname(SCRIPTPATH)
print(f'SCRIPTPATH={SCRIPTPATH} PROJECTPATH={PROJECTPATH}')
if 'AMALGAMATE_SOURCE_PATH' not in os.environ:
AMALGAMATE_SOURCE_PATH = os.path.join(PROJECTPATH, 'src')
else:
AMALGAMATE_SOURCE_PATH = os.environ['AMALGAMATE_SOURCE_PATH']
if 'AMALGAMATE_INCLUDE_PATH' not in os.environ:
AMALGAMATE_INCLUDE_PATH = os.path.join(PROJECTPATH, 'include')
else:
AMALGAMATE_INCLUDE_PATH = os.environ['AMALGAMATE_INCLUDE_PATH']
if 'AMALGAMATE_OUTPUT_PATH' not in os.environ:
AMALGAMATE_OUTPUT_PATH = os.path.join(SCRIPTPATH)
else:
AMALGAMATE_OUTPUT_PATH = os.environ['AMALGAMATE_OUTPUT_PATH']
# this list excludes the "src/generic headers"
ALLCFILES = ['ada.cpp']
# order matters
ALLCHEADERS = ['ada.h']
found_includes = []
current_implementation = ''
def doinclude(fid: str, file: str, line: str, origin: str) -> None:
p = os.path.join(AMALGAMATE_INCLUDE_PATH, file)
pi = os.path.join(AMALGAMATE_SOURCE_PATH, file)
if os.path.exists(p):
if file not in found_includes:
found_includes.append(file)
dofile(fid, AMALGAMATE_INCLUDE_PATH, file)
else:
pass
elif os.path.exists(pi):
if file not in found_includes:
found_includes.append(file)
dofile(fid, AMALGAMATE_SOURCE_PATH, file)
else:
pass
else:
# If we don't recognize it, just emit the #include
print('unrecognized:', file, ' from ', line, ' in ', origin)
print(line, file=fid)
def dofile(fid: str, prepath: str, filename: str) -> None:
file = os.path.join(prepath, filename)
RELFILE = os.path.relpath(file, PROJECTPATH)
# Last lines are always ignored. Files should end by an empty lines.
print(f'/* begin file {RELFILE} */', file=fid)
includepattern = re.compile('\\s*#\\s*include "(.*)"')
with open(file, 'r') as fid2:
for line in fid2:
line = line.rstrip('\n')
s = includepattern.search(line)
if s:
includedfile = s.group(1)
if includedfile == 'ada.h' and filename == 'ada.cpp':
print(line, file=fid)
continue
if includedfile.startswith('../'):
includedfile = includedfile[2:]
# we explicitly include ada headers, one time each
doinclude(fid, includedfile, line, filename)
else:
print(line, file=fid)
print(f'/* end file {RELFILE} */', file=fid)
# Get the generation date from git, so the output is reproducible.
# The %ci specifier gives the unambiguous ISO 8601 format, and
# does not change with locale and timezone at time of generation.
# Forcing it to be UTC is difficult, because it needs to be portable
# between gnu date and busybox date.
try:
timestamp = (
subprocess.run(['git', 'show', '-s', '--format=%ci', 'HEAD'], stdout=subprocess.PIPE)
.stdout.decode('utf-8')
.strip()
)
except Exception:
print('git not found, timestamp based on current time')
timestamp = str(datetime.datetime.now())
print(f'timestamp is {timestamp}')
os.makedirs(AMALGAMATE_OUTPUT_PATH, exist_ok=True)
AMAL_H = os.path.join(AMALGAMATE_OUTPUT_PATH, 'ada.h')
AMAL_C = os.path.join(AMALGAMATE_OUTPUT_PATH, 'ada.cpp')
DEMOCPP = os.path.join(AMALGAMATE_OUTPUT_PATH, 'cpp')
README = os.path.join(AMALGAMATE_OUTPUT_PATH, 'README.md')
print(f'Creating {AMAL_H}')
amal_h = open(AMAL_H, 'w')
print(f'/* auto-generated on {timestamp}. Do not edit! */', file=amal_h)
for h in ALLCHEADERS:
doinclude(amal_h, h, f'ERROR {h} not found', h)
amal_h.close()
print()
print()
print(f'Creating {AMAL_C}')
amal_c = open(AMAL_C, 'w')
print(f'/* auto-generated on {timestamp}. Do not edit! */', file=amal_c)
for c in ALLCFILES:
doinclude(amal_c, c, f'ERROR {c} not found', c)
amal_c.close()
# copy the README and DEMOCPP
if SCRIPTPATH != AMALGAMATE_OUTPUT_PATH:
shutil.copy2(os.path.join(SCRIPTPATH, 'demo.cpp'), AMALGAMATE_OUTPUT_PATH)
shutil.copy2(os.path.join(SCRIPTPATH, 'demo.c'), AMALGAMATE_OUTPUT_PATH)
shutil.copy2(os.path.join(SCRIPTPATH, 'README.md'), AMALGAMATE_OUTPUT_PATH)
shutil.copy2(os.path.join(AMALGAMATE_INCLUDE_PATH, 'ada_c.h'), AMALGAMATE_OUTPUT_PATH)
zf = zipfile.ZipFile(os.path.join(AMALGAMATE_OUTPUT_PATH, 'singleheader.zip'), 'w', zipfile.ZIP_DEFLATED)
zf.write(os.path.join(AMALGAMATE_OUTPUT_PATH, 'ada.cpp'), 'ada.cpp')
zf.write(os.path.join(AMALGAMATE_OUTPUT_PATH, 'ada.h'), 'ada.h')
zf.write(os.path.join(AMALGAMATE_INCLUDE_PATH, 'ada_c.h'), 'ada_c.h')
print('Done with all files generation.')
print(f'Files have been written to directory: {AMALGAMATE_OUTPUT_PATH}/')
print('Done with all files generation.')
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