54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
"""
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Example data formatters for strings represented as (pointer,length) pairs
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encoded in UTF8/16/32 for use with the LLDB debugger
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To use in your projects, tweak the children names as appropriate for your data structures
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and use as summaries for your data types
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part of The LLVM Compiler Infrastructure
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This file is distributed under the University of Illinois Open Source
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License. See LICENSE.TXT for details.
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"""
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import lldb
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def utf8_summary(value, unused):
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pointer = value.GetChildMemberWithName("first").GetValueAsUnsigned(0)
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length = value.GetChildMemberWithName("second").GetValueAsUnsigned(0)
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if pointer == 0:
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return False
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if length == 0:
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return '""'
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error = lldb.SBError()
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string_data = value.process.ReadMemory(pointer, length, error)
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return '"%s"' % (string_data) # utf8 is safe to emit as-is on OSX
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def utf16_summary(value, unused):
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pointer = value.GetChildMemberWithName("first").GetValueAsUnsigned(0)
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length = value.GetChildMemberWithName("second").GetValueAsUnsigned(0)
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# assume length is in bytes - if in UTF16 chars, just multiply by 2
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if pointer == 0:
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return False
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if length == 0:
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return '""'
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error = lldb.SBError()
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string_data = value.process.ReadMemory(pointer, length, error)
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# utf8 is safe to emit as-is on OSX
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return '"%s"' % (string_data.decode('utf-16').encode('utf-8'))
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def utf32_summary(value, unused):
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pointer = value.GetChildMemberWithName("first").GetValueAsUnsigned(0)
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length = value.GetChildMemberWithName("second").GetValueAsUnsigned(0)
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# assume length is in bytes - if in UTF32 chars, just multiply by 4
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if pointer == 0:
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return False
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if length == 0:
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return '""'
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error = lldb.SBError()
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string_data = value.process.ReadMemory(pointer, length, error)
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# utf8 is safe to emit as-is on OSX
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return '"%s"' % (string_data.decode('utf-32').encode('utf-8'))
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