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##
## Copyright (C) by Argonne National Laboratory
## See COPYRIGHT in top-level directory
##
from local_python import RE
import subprocess
def collect_info_hint_blocks(root_dir):
"""Collect INFO_HINT_BLOCKS from source files and return a function-name-keyed dictionary"""
infos_by_funcname = {}
# xargs may process files in batches and return a non-zero exit code if grep comes up empty
# use "|| true" to avoid terminating the script in those instances
# https://stackoverflow.com/questions/26540813/got-exit-code-123-in-find-xargs-grep
files = subprocess.check_output(
"find %s -name '*.[ch]' |xargs grep -l BEGIN_INFO_HINT_BLOCK || true" % root_dir,
shell=True).splitlines()
for f in files:
infos = parse_info_block(f)
for info in infos:
for funcname in info['functions'].replace(' ', '').split(','):
if funcname not in infos_by_funcname:
infos_by_funcname[funcname] = []
infos_by_funcname[funcname].append(info)
return infos_by_funcname
def parse_info_block(f):
"""Parse a source file with INFO_HINT_BLOCKs, and return a list of info hints"""
hints = []
info = None # loop variable
stage = 0
with open(f) as In:
for line in In:
if line.startswith("=== BEGIN_INFO_HINT_BLOCK ==="):
stage = 1
elif line.startswith("=== END_INFO_HINT_BLOCK ==="):
stage = 0
elif stage:
if RE.match(r'\s*-\s*name\s*:\s*(\w+)', line):
info = {"name":RE.m.group(1)}
hints.append(info)
elif RE.match(r'\s*(functions|type|default)\s*:\s*(.*)', line):
info[RE.m.group(1)] = RE.m.group(2)
elif RE.match(r'\s*description\s*:\s*>-', line):
info['description'] = ""
elif RE.match(r'\s+(\S.+)', line):
info['description'] += RE.m.group(1) + ' '
else:
info = None
return hints
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