39 lines
1.0 KiB
Python
39 lines
1.0 KiB
Python
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#!/usr/bin/env python2
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# Copyright 2015 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Support functions for extended command based testing."""
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import sys
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if hasattr(sys.stdout, 'isatty') and sys.stdout.isatty():
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cursor_back_cmd = '\x1b[1D' # Move one space to the left.
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else:
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cursor_back_cmd = ''
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def cursor_back():
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"""Return a string which would move cursor one space left, if available.
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This is used to remove the remaining 'spinner' character after the test
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completes and its result is printed on the same line where the 'spinner' was
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spinning.
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"""
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return cursor_back_cmd
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def hex_dump(binstr):
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"""Convert binary string into its multiline hex representation."""
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dump_lines = ['',]
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i = 0
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while i < len(binstr):
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strsize = min(16, len(binstr) - i)
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hexstr = ' '.join('%2.2x' % ord(x) for x in binstr[i:i+strsize])
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dump_lines.append(hexstr)
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i += strsize
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dump_lines.append('')
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return '\n'.join(dump_lines)
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