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# vim: set fileencoding=utf-8 :
import sys
from contextlib import contextmanager
from io import StringIO
class _StderrCapture(StringIO):
def save(self):
self.safed = sys.stderr
sys.stderr = self
def restore(self):
if self.safed is not None:
sys.stderr = self.safed
self.safed = None
def output(self):
self.seek(0)
return self.read()
class _StdoutCapture(StringIO):
def save(self):
self.safed = sys.stdout
sys.stdout = self
def restore(self):
if self.safed is not None:
sys.stdout = self.safed
self.safed = None
def output(self):
self.seek(0)
return self.read()
@contextmanager
def capture_stderr():
"""Capture an output and return its content"""
c = _StderrCapture()
c.save()
yield c
c.restore()
@contextmanager
def capture_stdout():
"""Capture an output and return its content"""
c = _StdoutCapture()
c.save()
yield c
c.restore()
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