Scite Auto Expansion

wiki

Typing

if |

becomes

if (|) {

and

for |

becomes

for (|; ; ) {

The "|" indicates cursor position before and after the expansion.

Expansion only occurs when the open file has a c or header file extension. The script also recognizes when you are typing in a commented section and will not auto-expand.

local in_word,current_word, substituting

local find = string.find   





-- Expand "if " to

-- if () {

--     

-- }

-- And set the cursor between the ()

-- Also works for "while "

function expandIf()

	-- The text is "if "

	editor:AddText("(")

	-- "if ("

	-- Remember where to bring the cursor to

	local tmp = editor.CurrentPos

	editor:AddText(") {")

	local line = editor:LineFromPosition(editor.CurrentPos)

	local tmpi = editor.LineIndentation[line]



	editor:AddText("\n")

	while tmpi >= 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("\n")

	tmpi = editor.LineIndentation[line]

	while tmpi > 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("}")

	

	-- Bring the cursor into the "()"

	editor:GotoPos(tmp)

end





function expandElse()

	local line = editor:LineFromPosition(editor.CurrentPos)

	local tmpi = editor.LineIndentation[line]



	editor:AddText("{\n")

	while tmpi >= 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	local tmp = editor.CurrentPos

	editor:AddText("\n")

	tmpi = editor.LineIndentation[line]

	while tmpi > 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("}")

	editor:GotoPos(tmp)

end





function expandFor()

	local line = editor:LineFromPosition(editor.CurrentPos)

	local tmpi = editor.LineIndentation[line]



	editor:AddText("(")

	local tmp = editor.CurrentPos

	editor:AddText("; ; ) {\n")

	while tmpi >= 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("\n")

	tmpi = editor.LineIndentation[line]

	while tmpi > 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("}")

	editor:GotoPos(tmp)

end





function expandDo()

	local line = editor:LineFromPosition(editor.CurrentPos)

	local tmpi = editor.LineIndentation[line]



	editor:AddText("{\n")

	while tmpi >= 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("\n")

	tmpi = editor.LineIndentation[line]

	while tmpi > 0 do

		editor:AddText("\t")

		tmpi = tmpi - 4

	end

	editor:AddText("} while (")

	local tmp = editor.CurrentPos

	editor:AddText(");")

	editor:GotoPos(tmp)

end



function expandCout()

	editor:AddText(" << \"")

	local tmp = editor.CurrentPos

	editor:AddText("\" << endl;")

	editor:GotoPos(tmp)

end



function OnChar(c)

	if not substituting then

		return false

	end

	

	-- Only activate on the space character

	if c == ' ' then

		-- The currentPos is the character after the cursor

		-- Get the style of the word that was just typed

		-- That is, the style of the character before the space

		cstyle = editor.StyleAt[editor.CurrentPos-2]

		

		-- If the typed word is a part of code

		-- Rather than a part of comments

		if cstyle == 0 or cstyle == 32 or cstyle == 4 or cstyle == 5 or cstyle == 10 or cstyle == 11 or cstyle == 16 then

			

			-- Get the word that was just typed

				local p, original_pos

				local lineStart

				

				-- get the current position and the start of the current line

				lineStart = editor:PositionFromLine(editor:LineFromPosition(editor.CurrentPos))

				original_pos = editor.CurrentPos

				

				-- Find the beginning of the current word

				p = editor.CurrentPos-2

				-- Stop on the space/tab/newline character

				while (p >= lineStart) and (find(string.char(editor.CharAt[p]), '%w')) do

					p = p - 1

				end

				-- Increment 1 to get the first character of the current word

				p = p + 1

				

				-- Select the word and get it

				editor:SetSel(p, editor.CurrentPos-1)

				current_word = editor:GetSelText()

				-- Clear the selection

				editor:SetSel(original_pos, original_pos)

			

			-- Got the word, now expand

				if current_word == "elseif" then

					editor:GotoPos(editor.CurrentPos - 3)

					editor:AddText(" ")

					editor:GotoPos(editor.CurrentPos + 3)

					expandIf()

				-- if and while have the same expansion

				elseif current_word == "if" or current_word == "while"  then

					expandIf()

				elseif current_word == "else" then

					expandElse()

				elseif current_word == "for" then

					expandFor()

				elseif current_word == "do" then

					expandDo()

				elseif current_word == "cout" then

					expandCout()

				end

			-- Expansion complete

		end

	end





	-- don't interfere with usual processing!

	return false

end  







function OnOpen(f)

	local ext = props['FileExt']

	if ext == 'h' or ext == 'c' or ext == 'hpp' or ext == 'cpp' or ext == 'cxx' or ext == 'cs' then 

		substituting = true

	else

		substituting = false

	end

end



function OnSwitchFile(f)

	local ext = props['FileExt']

	if ext == 'h' or ext == 'c' or ext == 'hpp' or ext == 'cpp' or ext == 'cxx' or ext == 'cs' then 

		substituting = true

	else

		substituting = false

	end

end

Originally based off of SteveDonovan's code for word substitution.