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"""
Scan the directory of nep files and extract their metadata. The
metadata is passed to Jinja for filling out `index.rst.tmpl`.
"""
import os
import sys
import jinja2
import glob
import re
def render(tpl_path, context):
path, filename = os.path.split(tpl_path)
return jinja2.Environment(
loader=jinja2.FileSystemLoader(path or './')
).get_template(filename).render(context)
def nep_metadata():
ignore = ('nep-template.rst')
sources = sorted(glob.glob(r'nep-*.rst'))
sources = [s for s in sources if not s in ignore]
meta_re = r':([a-zA-Z]*): (.*)'
neps = {}
print('Loading metadata for:')
for source in sources:
print(f' - {source}')
nr = int(re.match(r'nep-([0-9]{4}).*\.rst', source).group(1))
with open(source) as f:
lines = f.readlines()
tags = [re.match(meta_re, line) for line in lines]
tags = [match.groups() for match in tags if match is not None]
tags = {tag[0]: tag[1] for tag in tags}
# We could do a clever regexp, but for now just assume the title is
# the second line of the document
tags['Title'] = lines[1].strip()
tags['Filename'] = source
neps[nr] = tags
return {'neps': neps}
infile = 'index.rst.tmpl'
outfile = 'index.rst'
meta = nep_metadata()
print(f'Compiling {infile} -> {outfile}')
index = render(infile, meta)
with open(outfile, 'w') as f:
f.write(index)
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