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51 lines
1.2 KiB
51 lines
1.2 KiB
4 years ago
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#!/usr/bin/env python
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# This code must be source compatible with Python 2.4 through 3.3.
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#
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# Copyright 2003 Google Inc. All Rights Reserved.
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"""Utility functions for dealing with command interpreters."""
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import os
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# Running windows?
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win32 = (os.name == 'nt')
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def ShellEscapeList(words):
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"""Turn a list of words into a shell-safe string.
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Args:
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words: A list of words, e.g. for a command.
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Returns:
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A string of shell-quoted and space-separated words.
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"""
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if win32:
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return ' '.join(words)
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s = ''
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for word in words:
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# Single quote word, and replace each ' in word with '"'"'
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s += "'" + word.replace("'", "'\"'\"'") + "' "
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return s[:-1]
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def ShellifyStatus(status):
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"""Translate from a wait() exit status to a command shell exit status."""
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if not win32:
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if os.WIFEXITED(status):
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# decode and return exit status
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status = os.WEXITSTATUS(status)
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else:
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# On Unix, the wait() produces a 16 bit return code. Unix shells
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# lossily compress this to an 8 bit value, using the formula below.
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# Shell status code < 128 means the process exited normally, status
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# code >= 128 means the process died because of a signal.
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status = 128 + os.WTERMSIG(status)
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return status
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