How to draw a jerarchical tree in ASCII ??

Hi guys, I've been stuck in a small project of mine about organizational diagrams.
The idea is to produce a tiny domain specific language to describe a hierarchy of
entities in a organization. Like manager, offices, departaments, etc
So far the language part is already implemented parsing the input and creating
the hierarchy of this type
type unidad = {
name : string;
mutable parent : unidad option;
mutable children : unidad list;
the implementation language is Ocaml, the style of the hierarchy is procedural so we can treat
it as a C struct like this (I'm not experienced in C, maybe this struct definition is invalid...)
struct unidad {
char* name;
struct unidad* parent;
struct unidad** children;
the second phase is to draw some form of representation. Initially it was supposed this representation
be in ASCII. Here is an example of output (sorry the stupid example):
father
|
| | |
son girl boy
| | |
------- --------- |
| | | | |
dog cat doll bob-spongeball puppet
|
| | |
kitty spider homer
So far I'm short of ideas how to do this. I've tried in paper travelling from bottom nodes,
and mark every node as an offset (against an absolute columnt i don't know... see).
Say i reach to the last level and start with kitty, probe the parent, doll and mark it's
offset as 0, now mark it's children, kitty -1, spider 0 and homer 1, and now I know that
we need to go up... and then my head explodes...
Is there anyone who could enlighten me, designing an algorithm to draw this hierarchy ?

Tillotson wrote:Is Ocaml popular in Chile, how did you come to use it?
nah, I don't think so.
I am not that experienced guy to know the interests of people
into the languages field. I mean, I went to a 'good' university here and
sucked a lot because school was real easy that I had time to drink, being in
another planet... and stuff like that, but when the exigence
demanded to be constant I just couldn't handle it. Besides, topics
like economy or 'engineering' coming next year at that time scared
me more because I was really INTO my thing about computers. So I
dropped university with a really nice depression and got more
obsessed with knowledge (I have found this true, when you are sad
your mind is shouting more and more, beging for ideas to make sense of
your interests). This is how slowly my picture about the technical
side of the field has sharpened -languages more that anything else-...
I got interested in Turing as the man at that time, read one or
two papers of him and some revisions about his ideas, just to note
that it pervades computing (at that time I was a little paranoid) and
people actually keeps trying that path from different angles.
I've always been obsessed with programming-languages since I have a notion
of computation. So reading about Turing naturally took me to the theorical
side with references to some functional-or-like-that, lisp-or-like-that,
ml... you know.
As far of young people here, I don't believe their interests are
that independent to learn and explore Ocaml (even functional
programming is like voodo) because it's obvious when I try to talk to
teachers about the actual 'esoteric' paradigm I'm
fascinated with they don't want to involve.
Popular here would be C, php, social-shit,
networking as both consummers and theorists. That's my narrow vision
when this ideas haunt me at times.
So my idea is that they just do and think whatever their curricula
builds them in their heads. Yeah, it is a miserable
thought, I don't know, I just let my fixation with things like
this (languages) be my education -the real one- but I'm scared, I'm 24 and
I fear that when I finish university in this 2nd-or-3rd intent I'll get
jobs that make me neurotic and more miserable, typical web or repairing
houses jobs, thinking why I can't produce something interesting to sell.
I've found myself mentioning this discourse several times when talking to
people with my communication skills and irritability as an impediment.
Do you think I'm pedantic?, I mean when assisting to a shrink last year
we got to this theme and she attacked me -psichological tactic I think-
to the point it was patetic, me declaring 'I know nothing' but at the
same time it is clear that exploring things by your own gives you a
boost, an identity and a sense of being where you really want.

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