Hi guys! Got stuck with this..

[kulet]

"2nd post as i noone could do it"

Hi guys! Got stuck with this..
I have a chunks of text separated with blanc line. All I need is to
take every last 3 lines of that text before the blanc line and put it
in to the new text file: example:

1some text
2some text
3some text
4some text
5some text


6some text
7some text
8some text
9some text
10some text


11some text
12some text
13some text
14some text
15some text


End result mast be...


3some text
4some text
5some text
8some text
9some text
10some text
13some text
14some text
15some text


Any idea?

[mootmail-googlegroups@yahoo.com]

Re: Hi guys! Got stuck with this..

kulet wrote:

Hi guys! Got stuck with this..
I have a chunks of text separated with blanc line. All I need is to
take every last 3 lines of that text before the blanc line and put it
in to the new text file: example:

You could keep a rolling buffer of the previous 3 lines as variables
(or an array, which I would personally use). Each time you get a new
line, move each previous entry down the buffer getting rid of the
oldest. Then, when you encounter a blank line, dump your buffer to the
file.

Something like (untested):
$currLine = //get line data somehow
if (strlen($currLi ne)==0){
//output array contents to file
unset($buffer);
} else {
$buffer[] = $currLine;
if (count($buffer) >3){
array_shift($bu ffer);
}
}

[frothpoker]

Re: Hi guys! Got stuck with this..

Messy but effective:-

Read the whole of the text into a variable.

Reverse the string. I dont know if there is a function to do this or
whether you would have to write one.

copy the first three lines after each paragraph to a new variable.

Reverse this string to get it back into the correct direction.

OR:

more effective.

Copy the whole text to a variable
Split it at CRLF into an array.
The blank lines should create an 'empty' array element
For each array element, check the next three elements and if any of
them are empty (not sure if it will be null or just length zero) then
add it to a variable.

return the variable.

easy.

Aaron
mootmail-googlegroups@ya hoo.com wrote:

kulet wrote:

Hi guys! Got stuck with this..
I have a chunks of text separated with blanc line. All I need is to
take every last 3 lines of that text before the blanc line and put it
in to the new text file: example:

>
>
You could keep a rolling buffer of the previous 3 lines as variables
(or an array, which I would personally use). Each time you get a new
line, move each previous entry down the buffer getting rid of the
oldest. Then, when you encounter a blank line, dump your buffer to the
file.
>
Something like (untested):
$currLine = //get line data somehow
if (strlen($currLi ne)==0){
//output array contents to file
unset($buffer);
} else {
$buffer[] = $currLine;
if (count($buffer) >3){
array_shift($bu ffer);
}
}