goto line

[Castillo]

hey, i have a question, i want to create a system for "goto line" like in notepad, but my question is how to? if someone could give me a example of something i will be very appreciated.

Thanks in advance.

[Castillo]

any idea how to?

[Aibo]

no idea, 'cause i dont really get what you want. labels in code? dont think thats needed.

[Zango]

Are you creating a file editor in MTA or something?

[Static-X]

Let me guess, he(Castillo/Solidsnake14) is making a notepad for his computer system resource right?

[Castillo]

Zango got the point i'm creating a in-game script editor, so to be easier to go to a line i need something like notepad has, goto line, but my problem is how to make that? i'm using a memo btw.

[Zango]

are lines just separated by enter? Or do they properly include \n (newline)

If not, when client presses enter and the memo is in focus you could set it to secretly add \n to the string

this way, you can count the amount of times \n has been used in your string, or alternatively plus a variable 'lines' by 1 each time

[Castillo]

i open the file with fileOpen then i use fileRead and trigger it to client then guiSetText to the memo.

[Castillo]

i've tried this,

guiMemoSetCaretIndex(script_memo,tonumber(line)) 

but when i set to example: line 50 it doesn't sends me there but at same time when i do line 1 it moves to start of script o_O

[Aibo]

i've tried this,

guiMemoSetCaretIndex(script_memo,tonumber(line)) 

but when i set to example: line 50 it doesn't sends me there but at same time when i do line 1 it moves to start of script o_O

index is not line index, its character index.

you can calcutate positions of line breaks (\n) and move to the next symbol by guiMemoSetCaretIndex

[Castillo]

oh, i suposed because i did goto line 100000 and worked , so how i can make what you say?

[Aibo]

with some combination ot string functions i suppose, need to think about best way

[dzek (varez)]

  
function explode(div,str) 
  if (div=='') then return false end 
  local pos,arr = 0,{} 
  -- for each divider found 
  for st,sp in function() return string.find(str,div,pos,true) end do 
    table.insert(arr,string.sub(str,pos,st-1)) -- Attach chars left of current divider 
    pos = sp + 1 -- Jump past current divider 
  end 
  table.insert(arr,string.sub(str,pos)) -- Attach chars right of last divider 
  return arr 
end 
  
local mystring = "some\ntext\nbla\nbla\nbla" -- this text have 5 lines 
local exp = explode("\n", mystring) 
  
local targetLine = 3 
  
local index=0 
for i=1, targetLine-1 do 
  index = index + exp[i].len 
end 
  
guiMemoSetCaretIndex(memo, index) -- i have my brain overheated, maybe you will need to add 1 to index to make it work correctly (but probably not) 
  

sorry if its buggy ;]

[Aibo]

function explode(div,str) 

https://wiki.multitheftauto.com/wiki/Split

[dzek (varez)]

can be used instead, but explode will split via any string (like "i rule-:-and this is 2nd string", then explode("-:-", string)), this requires ASCII number (for new line it will be 10 BTW (or 13? but 13 was for \r afair)

[Castillo]

i don't get how to implement your code varez in my script.

btw it gives an error at this line: index = index + exp.len

attempt to perform arithmetic on field 'len' (a function value)

edit: fixed error, index = index + exp:len()

edit2:

i've tryed to implement it, question: do i have to add:

local mystring = guiGetText(script_memo) 
local exp = explode("\n", mystring) 
local targetLine = tonumber ( guiGetText ( script_memo ) ) 
local index=0 
for i=1, targetLine-1 do 
  index = index + exp[i]:len() 
end 
guiMemoSetCaretIndex(script_memo,index) 

in the event when click "goto line" button? or let it external?

[Aibo]

in the event when click "goto line" button? or let it external?

add it as a function and call it to get index for guiMemoSetCaretIndex when "goto" button clicked:

function getLineIndex(mystring, targetLine) 
  local exp = explode("\n", mystring) 
  local index=0 
  for i=1, targetLine-1 do 
    index = index + exp[i]:len() 
  end 
  return index 
end 
  
-- onClientGUIClick your "goto line" button: 
guiMemoSetCaretIndex(script_memo, getLineIndex(guiGetText(script_memo), guiGetText(someLineNumberEditBox))) 

[Castillo]

i get an error: attempt to perform arithmetic on local 'targetLine' (a nil value)

code:

function explode(div,str) 
  if (div=='') then return false end 
  local pos,arr = 0,{} 
  for st,sp in function() return string.find(str,div,pos,true) end do 
    table.insert(arr,string.sub(str,pos,st-1)) 
    pos = sp + 1 
  end 
  table.insert(arr,string.sub(str,pos)) 
  return arr 
end 
  
local mystring = guiGetText(script_memo) 
local exp = explode("\n", mystring) 
local targetLine = tonumber ( guiGetText ( script_memo ) ) 
  
local index=0 
for i=1, targetLine-1 do 
  index = index + exp[i]:len() 
end 
  
function getLineIndex(mystring, targetLine) 
  local exp = explode("\n", mystring) 
  local index=0 
  for i=1, targetLine-1 do 
    index = index + exp[i]:len() 
  end 
  return index 
end 

Edit: i set targetLine to 3 and no errors, i do goto line 1 and it moves to start of script, but my problem is: how i can do something to select the line?

Edited December 5, 2010 by Guest

[Aibo]

well i dont know how your editBox called where client puts line number to go to. replace someLineNumberEditBox with that variable

function explode(div,str) 
  if (div=='') then return false end 
  local pos,arr = 0,{} 
  for st,sp in function() return string.find(str,div,pos,true) end do 
    table.insert(arr,string.sub(str,pos,st-1)) 
    pos = sp + 1 
  end 
  table.insert(arr,string.sub(str,pos)) 
  return arr 
end 
  
--[[-- you don't need this part:  
local mystring = guiGetText(script_memo) 
local exp = explode("\n", mystring) 
local targetLine = tonumber ( guiGetText ( script_memo ) ) 
  
local index=0 
for i=1, targetLine-1 do 
  index = index + exp[i]:len() 
end  
--]]-- since its in a function now 
  
function getLineIndex(mystring, targetLine) 
  local exp = explode("\n", mystring) 
  local index=0 
  for i=1, targetLine-1 do 
    index = index + exp[i]:len() 
  end 
  return index 
end 

[Castillo]

it seems to work, but now about selecting the text, how i can do this? is possible?

[Aibo]

i dont think it is, not in an easy way at least.