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79 lines
1.9 KiB
Python
79 lines
1.9 KiB
Python
#! /usr/bin/env python
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"""
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Illustrate how to override a class method to do something
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In this case, print the commands being executed as strings
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(the commands are usually lists, so this can be misleading)
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"""
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import sys
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from waflib import Context, Utils, Errors, Logs
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def exec_command(self, cmd, **kw):
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subprocess = Utils.subprocess
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kw['shell'] = isinstance(cmd, str)
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if isinstance(cmd, str):
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kw['shell'] = True
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txt = cmd
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else:
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txt = ' '.join(repr(x) if ' ' in x else x for x in cmd)
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Logs.debug('runner: %s' % txt)
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Logs.debug('runner_env: kw=%s' % kw)
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if self.logger:
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self.logger.info(cmd)
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if 'stdout' not in kw:
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kw['stdout'] = subprocess.PIPE
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if 'stderr' not in kw:
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kw['stderr'] = subprocess.PIPE
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if Logs.verbose and not kw['shell'] and not Utils.check_exe(cmd[0]):
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raise Errors.WafError("Program %s not found!" % cmd[0])
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wargs = {}
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if 'timeout' in kw:
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if kw['timeout'] is not None:
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wargs['timeout'] = kw['timeout']
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del kw['timeout']
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if 'input' in kw:
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if kw['input']:
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wargs['input'] = kw['input']
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kw['stdin'] = Utils.subprocess.PIPE
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del kw['input']
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try:
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if kw['stdout'] or kw['stderr']:
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p = subprocess.Popen(cmd, **kw)
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(out, err) = p.communicate(**wargs)
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ret = p.returncode
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else:
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out, err = (None, None)
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ret = subprocess.Popen(cmd, **kw).wait(**wargs)
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except Exception as e:
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raise Errors.WafError('Execution failure: %s' % str(e), ex=e)
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if out:
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if not isinstance(out, str):
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out = out.decode(sys.stdout.encoding or 'iso8859-1')
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if self.logger:
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self.logger.debug('out: %s' % out)
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else:
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Logs.info(out, extra={'stream':sys.stdout, 'c1': ''})
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if err:
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if not isinstance(err, str):
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err = err.decode(sys.stdout.encoding or 'iso8859-1')
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if self.logger:
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self.logger.error('err: %s' % err)
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else:
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Logs.info(err, extra={'stream':sys.stderr, 'c1': ''})
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return ret
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Context.Context.exec_command = exec_command
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