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Make python script idempotent.

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Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
This commit is contained in:
Mateusz Starzyk 2021-05-27 13:50:40 +02:00
parent 284471c236
commit cad24bb5d8
1 changed files with 14 additions and 5 deletions
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19
apply_MBEDTLS_PRIVATE.py
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@ -74,24 +74,33 @@ for struct_file in struct_files:
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(files_to_visit)
mbedtls_private_access_include = "#include \"mbedtls/private_access.h\""
for file_path, variables in files_to_visit.items():
# check if this file has "mbedtls/private_access.h" include
file_has_private_access_include = False
with open(file_path, 'r') as file:
for line in file:
if mbedtls_private_access_include in line:
file_has_private_access_include = True
break
# FileInput redirects stdout to to 'file', so every print in this block will be put inside 'file'
with fileinput.FileInput(file_path, inplace=True) as file:
output_line_number = 1
# compile regex matching the header's include guard.
re_include_guard = re.compile(r"^#define.*{name}$".format(name=os.path.basename(file_path).replace('.','_').upper()))
for line in file:
insert_allow_private_include = False
insert_private_access_include = False
if re_include_guard.match(line):
insert_allow_private_include = True
insert_private_access_include = not file_has_private_access_include
# every line in file is checked against variables and lines in which they occur
for variable, var_lines in variables.items():
for var_line in var_lines:
# wrap variable with MBEDTLS_PRIVATE(...) macro
if output_line_number == var_line:
line = re.sub(r"(^.*?\W+)({var})(\W+.*$)".format(var=variable), r"\1MBEDTLS_PRIVATE(\2)\3", line)
line = re.sub(r"(^.*?\W+)((?!MBEDTLS_PRIVATE\(){var})(\W+.*$)".format(var=variable), r"\1MBEDTLS_PRIVATE(\2)\3", line)
output_line_number += 1
print(line, end='') # fileinput redirects stdout to the target file
if insert_allow_private_include:
insert_allow_private_include = False
if insert_private_access_include:
print("#include \"mbedtls/private_access.h\"")