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Posted by Jerry Stuckle on 09/28/13 12:01
Kailash Nadh wrote:
> On Jan 28, 1:16 am, Jerry Stuckle <jstuck...@attglobal.net> wrote:
>> KailashNadhwrote:
>>> Hello all.
>>> I have this tab formatted hierarchical structure.
>>> --------------------
>>> 0 A
>>> 1 B
>>> 2 C
>>> 2 D
>>> 1 E
>>> --------------------
>>> Every line has a string intended to its depth with tabs. (The numbers
>>> in the above example are the number of tabs intending that line and
>>> are not present in the actual data)
>>> I need to parse the above structure into a tree (multi-dimensional
>>> array), for eg:
>>> Array
>>> (
>>> [A] => Array
>>> (
>>> [B] => Array
>>> (
>>> [C] =>
>>> [D] =>
>>> )
>>> [E] =>
>>> )
>>> )
>>> I have this loop that parses each line and has the following for every
>>> line,
>>> $depth = (number of tabs) and $key = (A, B etc..)
>>> So the string in each line is the KEY of the array / tree. Needn't
>>> worry about the value.
>>> This is pretty simple, but I just can't get my head around it. Could
>>> anyone throw some light on this issue?
>>> Thank you.
>>> --
>>> KailashNadh|http://kailashnadh.name
>> Personally, I'd use a recursive function. Parameters to the function
>> are reference to a variable and depth (first is an empty array and 0).
>>
>> Read a new item. If it is on same level, just add it to the current
>> array. If it's one level lower, add an array as the new element and
>> recurse with the new array as the parameter.
>>
>> --
>> ==================
>> Remove the "x" from my email address
>> Jerry Stuckle
>> JDS Computer Training Corp.
>> jstuck...@attglobal.net
>> ==================
>
> I already thought of using a recursive function, but what would happen
> if there's a case like this ?
> 0|
> 1| A
> 2| B
> 3| C
> 4| D
> 4| E
> 5| F
> 6| G
> 6| H
> 2| I
> 2| H
> 3| K
>
> After level 6, $depth suddenly jumps back to 2 and goes to 3 and so
> on.
>
> Thank you.
>
> --
> Kailash Nadh | http://kailashnadh.name
>
No problem. If the depth is lower than the current one, return to
higher levels until you have the correct depth.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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