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[gn build] Fix Python DeprecationWarning

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Summary:
This fixes two issues:
 - DeprecationWarning: invalid escape sequence \`
 - ResourceWarning: unclosed file

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67753

llvm-svn: 372876
This commit is contained in:
Marco Antognini 2019-09-25 14:15:34 +00:00
parent adcb0c2b69
commit 0945fbe7ba
1 changed files with 10 additions and 4 deletions
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14
utils/gn/build/write_cmake_config.py
View File

@ -1,5 +1,5 @@
#!/usr/bin/env python
"""Emulates the bits of CMake's configure_file() function needed in LLVM.
r"""Emulates the bits of CMake's configure_file() function needed in LLVM.
The CMake build uses configure_file() for several things. This emulates that
function for the GN build. In the GN build, this runs at build time instead
@ -62,7 +62,8 @@ def main():
# Matches e.g. '${FOO}' or '@FOO@' and captures FOO in group 1 or 2.
var_re = re.compile(r'\$\{([^}]*)\}|@([^@]*)@')
in_lines = open(args.input).readlines()
with open(args.input) as f:
in_lines = f.readlines()
out_lines = []
for in_line in in_lines:
def repl(m):
@ -102,8 +103,13 @@ def main():
file=sys.stderr)
return 1
if not os.path.exists(args.output) or open(args.output).read() != output:
open(args.output, 'w').write(output)
def read(filename):
with open(args.output) as f:
return f.read()
if not os.path.exists(args.output) or read(args.output) != output:
with open(args.output, 'w') as f:
f.write(output)
os.chmod(args.output, os.stat(args.input).st_mode & 0o777)