Subject: Re: [boost] [Tokenizer]Usage and documentation
From: Yechezkel Mett (ymett.on.boost_at_[hidden])
Date: 2011-02-09 06:41:32
On Tue, Feb 8, 2011 at 3:13 PM, Max <more4less_at_[hidden]> wrote:
> I'm using boost::tokenizer to do some simple parsing of data file in a
> format specified by the following rules:
> - One record of several fields in a single line
> - Adjacent data fields in a record separated by space char's(space
> or tab), with or without ","
> - String without space(s), with or without quotation marks
> - String with space(s), with quotation marks
> One example of a 4-field-per-record file is like:
> "string 2" 3 4 5 4.3
> "String", 2, 3.04 4 3
> AnyOtherText, 2, 3.04 4 3
I normally use boost.regex's regex_token_iterator for this sort of task.
Try the following regex:
and tell regex_token_iterator to extract matches 1 and 2.
The above regex has a couple of quirks: "a""b" will be taken as two
fields, "a" and "b". a,,b will be taken as two fields, not three.
To read the file line by line, simply use std::getline.
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