virtualx-engine/compat.py
Rémi Verschelde 7bf9787921 SCons: Format buildsystem files with psf/black
Configured for a max line length of 120 characters.

psf/black is very opinionated and purposely doesn't leave much room for
configuration. The output is mostly OK so that should be fine for us,
but some things worth noting:

- Manually wrapped strings will be reflowed, so by using a line length
  of 120 for the sake of preserving readability for our long command
  calls, it also means that some manually wrapped strings are back on
  the same line and should be manually merged again.

- Code generators using string concatenation extensively look awful,
  since black puts each operand on a single line. We need to refactor
  these generators to use more pythonic string formatting, for which
  many options are available (`%`, `format` or f-strings).

- CI checks and a pre-commit hook will be added to ensure that future
  buildsystem changes are well-formatted.

(cherry picked from commit cd4e46ee65)
2020-06-10 15:30:52 +02:00

90 lines
1.9 KiB
Python

import sys
if sys.version_info < (3,):
def isbasestring(s):
return isinstance(s, basestring)
def open_utf8(filename, mode):
return open(filename, mode)
def byte_to_str(x):
return str(ord(x))
import cStringIO
def StringIO():
return cStringIO.StringIO()
def encode_utf8(x):
return x
def decode_utf8(x):
return x
def iteritems(d):
return d.iteritems()
def itervalues(d):
return d.itervalues()
def escape_string(s):
if isinstance(s, unicode):
s = s.encode("ascii")
result = ""
for c in s:
if not (32 <= ord(c) < 127) or c in ("\\", '"'):
result += "\\%03o" % ord(c)
else:
result += c
return result
else:
def isbasestring(s):
return isinstance(s, (str, bytes))
def open_utf8(filename, mode):
return open(filename, mode, encoding="utf-8")
def byte_to_str(x):
return str(x)
import io
def StringIO():
return io.StringIO()
import codecs
def encode_utf8(x):
return codecs.utf_8_encode(x)[0]
def decode_utf8(x):
return codecs.utf_8_decode(x)[0]
def iteritems(d):
return iter(d.items())
def itervalues(d):
return iter(d.values())
def charcode_to_c_escapes(c):
rev_result = []
while c >= 256:
c, low = (c // 256, c % 256)
rev_result.append("\\%03o" % low)
rev_result.append("\\%03o" % c)
return "".join(reversed(rev_result))
def escape_string(s):
result = ""
if isinstance(s, str):
s = s.encode("utf-8")
for c in s:
if not (32 <= c < 127) or c in (ord("\\"), ord('"')):
result += charcode_to_c_escapes(c)
else:
result += chr(c)
return result