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Re: Parsing using m//g

by ikegami (Pope)
on Sep 25, 2006 at 16:00 UTC ( #574768=note: print w/ replies, xml ) Need Help??


in reply to Parsing using m//g

my $contents = do { local $/; <DATA> }; while ($contents =~ / \s* ([^=\s]+) \s* = \s* ( (?: (?! \s* (?: [^=\s]+ \s* = | $ ) ) . )* ) /xmsg ) { print("[$1 => $2]\n"); } __DATA__ name1=value1 name2 = value2 name3 = value3 but wait, there is more name4= value4

Ouputs

[name1 => value1] [name2 => value2] [name3 => value3] [name4 => value4]

Update: The above works by never allowing bad data in the value. The following is an alternate solution that works by starting with an empty value, and extending it as much as possible.

my $contents = do { local $/; <DATA> }; while ($contents =~ / \s* ([^=\s]+) \s* = \s* (.*?) # Extend the value. (?= \s* (?: [^=\s]+ \s* = | $ ) ) /xmsg ) { print("[$1 => $2]\n"); }


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Re^2: Parsing using m//g
by pbeckingham (Parson) on Sep 25, 2006 at 16:03 UTC

    To be correct, your output would have to be:

    [name1 => value1] [name2 => value2] [name3 => value3 but wait, there is more] [name4 => value4]



    pbeckingham - typist, perishable vertebrate.

      Simply change /.../xmsg to /.../xsg.
      and/or
      Simply change $ to \z.

      Update: Added the second (and better) option.

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