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[pranavkulkarni]

ok.... I was planning some other approach, I will take complete one node in one string -- try to get the measures and unit -- then based on that I will produce other tags and then I will concatenanate the nodes.. please tell me how do you find this approach.... If possible give me some outline of this approach in terms of syntax...

[psycore]

For the regular expression part, see here, here or here (including next page). The last one is the best but also most complicated.

first = true
-- complete saves the whole text we want to write
complete = ""
-- tmp contains one node
tmp = ""
for line in input:lines() do
    --[[ pseudo code
        if line containes "equipment"
            -- if we find it the first time, there's no node to be saved yet
            if first then first = false
            else
                -- attach the node
                complete .. tmp .. "\n"
                -- change the node to centimeter
                in tmp replace meter with centimeter
                in tmp replace "<size>(%d+)" with "<size>%100" -- regular expression
                -- attach that part
                complete .. tmp .. "\n"
                -- change the node to milimeter
                in tmp replace centi with mili
                in tmp replace "<size>(%d+)" with "<size>%10" -- regular expression
                -- attach again
                complete .. tmp .. "\n"
            end
        -- if line is part of node attach to tmp
        elseif line doesn't contain catalog and line doesn't contain xml then
            tmp .. line .. "\n"
        else
            -- no part of node, directly attach to complete
            complete .. line .. "\n"
        end
    ]]--
end
-- output and close
input:close()
output:write(complete)
output:flush()
output:close()

This assumes that you have a input and a output variable which handle the files.

[Vlad84]

Help. How to make a long shadow (longer)?
Translated with http://translate.google.com/

[psycore]

Sorry, I don't understand.

[pranavkulkarni]

hi Sir, sorry for late reply... I was a bit busy in some other assignments...
I got your point.. but if I want to do this task based on the strings then how can I do that?
This is the example:
<?xml version="1.0" ?>
- <catalog>
- <equipment id="eq101">
<name>ruler</name>
<material>plastic Guide</material>
<measures>length</measures>
<unit>meter</meter>
<size>12</size>
</equipmentid>
<equipment id="eq102">
<name>ruler1</name>
<material>metal Guide</material>
<measures>length</measures>
<unit>centimeter</meter>
<size>2</size>
</equipmentid>
</catalog>

now in the above xml file, there are two sets of info, I can say... they are equipment id 101, 102...
now I will take all the info into one string say text.. so now in text I have full file ....
now I need to take the first string that is the content in between, <equipmentid> to </equipmentid> I will save the string as a first content of some table may be.... and so on... Can you please help me for the task which is explained above...

Thanks in advance!!
sorry again...

[psycore]

assuming that the content of the .xml file is stored in a variable called "text":

for a, content, b in string.gfind(text, "(<equipment.->)(.-)(</equipment>)") do
    -- content contains everything between <equipment ...> and </equipment>
end

I guess in the text you posted it's supposed to be "</equipment>" not "</equipmentid>".

[pranavkulkarni]

Thanks alot!!
yes, in the previous posts I metioned.. equipment and not equipmentid... but they are same only...
Sir I got solution from your side only partially... can you please tell me how it will work ?
it seems to be a bit complex..what is a and b in that for loop?

Thanks again

[psycore]

gfind(text, regex) returns a function which each time it is called returns the next occurrence of regex in text. So for example:

 findIt = gfind("I am a sentence", "a")
 findIt() -- returns "a" (the one of "am")
 findIt() -- returns "a" (the single "a")
 findIt() -- returns nil (no more a)

This works with regular expressions as well:

-- %w+ means any string of alphanumerical characters that is not empty
findIt = gfind("I am a sentence", "%w+")
findIt() -- returns "I"
findIt() -- returns "am"
findIt() -- returns "a"
findIt() -- returns "sentence"
findIt() -- returns nil

The next thing you can do is put stuff in parenthesis, in which case gfind will return only the stuff in parenthesis:

 -- search for two word, return seperately
 findIt = gfind("I am a sentence", "(%w+) (%w+)")
 findIt() -- returns "I" and returns "am"
 findIt() -- returns "a" and returns "sentence"
 findIt() -- returns nil

Now here's a little update on the loop (there's no need for a and b):

for content in string.gfind(text, "<equipment.->%s*(.-)%s*</equipment.->") do
    -- content contains everything between <equipment ...> and </equipment> without leading and trailing whitespace characters.
end

what this does is go through text until there is no more occurrence of <equipment ...>any text</equipment> and store the stuff between the tags into content.

[pranavkulkarni]

Excellent!!

Thanks a lot for your wonderful explaination!!
Surely it is very much helpful.....
I will again get back to you if I will have any doubt about LUA...

Thanks again!

[J0Y]

is there a way to get/set each bodypart's rotation?