[DGD] Search and replace with parse_string?

[Krister Svanlund]

I checked this file out earlier but it feels too advanced for what I
want to do. Also I don't understand why this grammer gives nil of the
string "hello!!":
exc = /[!]/
word = /[a-z]+/
excs : exc
excs : exc excs
worde : word
worde : word excs
sentance : worde
sentance : worde sentance

I did however figure out how to write it while writing this e-mail:
exc = /[!]/
word = /[a-z]+/
worde = word
worde = word exc
sentance : worde
sentance : worde sentance

On Fri, Jul 23, 2010 at 6:22 PM,  <bart at wotf.org> wrote:
> Hi Krister,
>
> Maybe http://mud.wotf.org/downloads/lpc/colorize.c is useful as an example for
> this.
>
> Regards,
> Bart
>
> On Fri, 23 Jul 2010 17:49:52 +0200, Krister Svanlund wrote
>> I've just started playing with DGD again after quite some time away
>> from text-based games and thought I would do som actual coding this
>> time.
>>
>> Just to get a feel for LPC i decided to write a small module to add
>> color and escape-sequences to strings, since I like a colorful
>> terminal window :)
>>
>> My basic idea is that if a string such as "Hello
>> %RED!%World%RESET%!!" is sent to a user the %RED!% part will be
>> replaced with \x1b[1;31m and the %RESET% part with \x1b[0m. I have
>> gotten it to (kind of) work a few times but it's always with severe
>> limitations, such as % being unusable in the string. I solved this
>> by doing what I would have done in C and looped over the text and
>> calling a function on each color-string (such as RED!). This being
>> my current version I'm attempting to parse those strings with parse_string.
>>
>> My idea is to have a grammer something like this:
>>
>> mod = /[!_]/ /* ! becomes bold, !! becomes highcolor bold etc. */
>> move = /[\^v<>]/ /* different kinds of cursor movements, also used as
>> function arguments for clear and such */
>> word = /[a-zA-Z]+/
>> count = /[0-9]+/
>> mods : mod mods /* each mod can be followed by several other mods */
>> mods : mod
>> color : word ? colorify /* a color can either be a simple color name
>> or a color name followed by a modifier */
>> color : word mods ? colorify
>> movement : move ? movify /* a movement can be specified with a number
>> otherwise it defaults to one */
>> movement : count move ? movify
>> func : word ? funcify
>> func : word move ? funcify
>> func : word count move ? funcify /* this should be used for clear...
>> and maybe something else */
>>
>> This does not seems to work. At best I get a nil back no matter what
>>
>> (correct) text i feed it. If anyone can help me, either with a
>> grammar that handles it all or just a grammer for the color-
>> specification it would be really cool.
>>
>> I'm running DGD 1.4.3 and Kernel mudlib 1.3.3 and all this on linux.
>> ___________________________________________
>> https://mail.dworkin.nl/mailman/listinfo/dgd
>
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