Getting index from strsplit or strfind in a null (00) terminated string

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Simon 2016-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/278259-getting-index-from-strsplit-or-strfind-in-a-null-00-terminated-string

编辑： per isakson 2016-4-11

I have a long string with chunks of data. Each data chunk is separated/terminated by null (hex 00). Right now I use strsplit(data, '\0') to split the string, which works fine, but it returns a cell array with data, however, I rather need the functionality of strfind and get a list of indices for where the string is split.

Example of data:

data_chunk "null/0x00" data_chunk "null/0x00" data_chunk "null/0x00"

I know the first chunk is obviously at index 0, but I would also like to get the indices of the remaining chunks.

Is it possible to use strfind and search for null?

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Azzi Abdelmalek 2016-4-10

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Post clearly your data, for example:

str='null/0x00'

Then explain what is the expected result

result=?

Simon 2016-4-10

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For reference, an example of the string could be

str = 'engine_thrust combustion yaw pitch roll'

where the whitespaces are char null i.e. hex value 0x00.

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采纳的回答

per isakson 2016-4-10

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https://ww2.mathworks.cn/matlabcentral/answers/278259-getting-index-from-strsplit-or-strfind-in-a-null-00-terminated-string#answer_217303

编辑：per isakson 2016-4-10

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What am I missing?

>> str = [char(0),'abc',char(0),'123',char(0)];
>> find( str==char(0) )
ans =
     1     5     9
>> strfind( str, char(0) )
ans =
     1     5     9
>> strsplit( str, '\0') 
ans = 
    ''    'abc'    '123'    ''

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Simon 2016-4-11

Great, nice to know, might as well keep it as clean as possible.

per isakson 2016-4-11

编辑：per isakson 2016-4-11

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IMO: Explicit casting makes the code easier to read (and often faster).

>> ['B'+1, 67]
ans =
    67    67
>> ['B', 67]
ans =
BC
>> ['B'+1, 'C']
ans =
CC

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