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comparison mercurial/utils/procutil.py @ 46175:a04c03b0678e

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procutil: assign pseudo file object if sys.stdout/stderr is missing This basically simulates the Python 2 behavior. If libc stdio were used, these file objects would be available and raise EBADF. There is subtle difference between py2 and py3, but I think py3 behavior (i.e. exit 255) is more correct. "if" conditions are adjust so that they look similar to dispatch.initstdio().
author Yuya Nishihara <yuya@tcha.org>
date Fri, 18 Dec 2020 20:09:11 +0900
parents a1601ff3877c
children 128a17d8436f
comparison
equal deleted inserted replaced
46174:a1601ff3877c 46175:a04c03b0678e
129 # the data. 129 # the data.
130 return WriteAllWrapper(stream) 130 return WriteAllWrapper(stream)
131 131
132 132
133 if pycompat.ispy3: 133 if pycompat.ispy3:
134 # Python 3 implements its own I/O streams. 134 # Python 3 implements its own I/O streams. Unlike stdio of C library,
135 # sys.stdin/stdout/stderr may be None if underlying fd is closed.
136
135 # TODO: .buffer might not exist if std streams were replaced; we'll need 137 # TODO: .buffer might not exist if std streams were replaced; we'll need
136 # a silly wrapper to make a bytes stream backed by a unicode one. 138 # a silly wrapper to make a bytes stream backed by a unicode one.
137 139
138 # sys.stdin can be None 140 if sys.stdin is None:
139 if sys.stdin: 141 stdin = BadFile()
142 else:
140 stdin = sys.stdin.buffer 143 stdin = sys.stdin.buffer
144 if sys.stdout is None:
145 stdout = BadFile()
141 else: 146 else:
142 stdin = BadFile() 147 stdout = _make_write_all(sys.stdout.buffer)
143 stdout = _make_write_all(sys.stdout.buffer) 148 if sys.stderr is None:
144 stderr = _make_write_all(sys.stderr.buffer) 149 stderr = BadFile()
150 else:
151 stderr = _make_write_all(sys.stderr.buffer)
152
145 if pycompat.iswindows: 153 if pycompat.iswindows:
146 # Work around Windows bugs. 154 # Work around Windows bugs.
147 stdout = platform.winstdout(stdout) 155 stdout = platform.winstdout(stdout)
148 stderr = platform.winstdout(stderr) 156 stderr = platform.winstdout(stderr)
149 if isatty(stdout): 157 if isatty(stdout):