Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Hi exilepanda,

Only I thought that would be some build in perl func or syntactical trick can do the job. Seem there should be no simple direct way to do that now.

Well sure there is :-)

my $data = {}; while (<DATA>) { chomp; my @fields = split /\s*[=\.]\s*/; build( $data, \@fields, pop @fields ); } sub build { my ($ref, $path, $val) = @_; return $val unless @$path; my $el = shift @$path; if ($el=~/^\[(\d+)\]$/) { $ref->[$1] = build( $ref->[$1], $path, $val ) } else { $ref->{$el} = build( $ref->{$el}, $path, $val ) } return $ref; } __DATA__ object.prop.subprop.[0].name = foo object.prop.subprop.[1].name = bar obj.prop.[0] = blah obj.prop.[1] = 1000

$data then looks like so:

{ obj => { prop => ["blah", 1000] }, object => { prop => { subprop => [{ name => "foo" }, { name => "bar" + }] } }, }

And then to walk the data structure:

sub dive { my ($ref,@path) = @_; return $ref unless @path; my $el = shift @path; if ($el=~/^\[(\d+)\]$/) { return dive( $ref->[$1], @path ) } else { return dive( $ref->{$el}, @path ) } } print dive( $data, qw/ obj prop [0] / ), "\n"; # prints "blah" print dive( $data, qw/ object prop subprop [1] name / ), "\n"; # prints "bar"

Hope this helps,
-- Hauke D

In reply to Re^3: How to get a reference from an eval() string? by haukex
in thread How to get a reference from an eval() string? by exilepanda

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (8)
    As of 2020-03-30 10:22 GMT
    Find Nodes?
      Voting Booth?
      To "Disagree to disagree" means to:

      Results (175 votes). Check out past polls.