Quick setup

This script allows you to select the word under the cursor. This is similar to the Edit/Select Word command in many text editors.

First of all, put the following code into your Lua startup file:

function isWordChar(char)
 local strChar = string.char(char)
 local beginIndex = string.find(strChar, '%w')
 if beginIndex ~= nil then
 return true
 end
 if strChar == '_' then
 return true
 end
 return false
end
function SelectWord()
 local beginPos = editor.CurrentPos
 local endPos = beginPos
 while isWordChar(editor.CharAt[beginPos-1]) do
 beginPos = beginPos - 1
 end
 while isWordChar(editor.CharAt[endPos]) do
 endPos = endPos + 1
 end
 if beginPos ~= endPos then
 editor.SelectionStart = beginPos
 editor.SelectionEnd = endPos
 end
end

After that, you need to bind a shortcut key for SelectWord. In your properties file place the following code, replacing 13 with an unused command number. Also, feel free to use whatever shortcut you like instead of Ctrl+J.

command.name.13.*=Select Word
command.mode.13.*=subsystem:lua,savebefore:no,groupundo
command.shortcut.13.*=Ctrl+J
command.13.*=SelectWord

Explanations

The algorithm is quite simple. We have two variables which will be the the start and the end positions of the word. Initially, they are equals and point to cursor's position. We move beginPos to the left (by decrementing it) and endPos to the right (by incrementing it) until we hit the word's boundaries. Then we set the editor's selection using these variables.

MocanuCristian

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Last edited August 31, 2006 2:50 pm GMT (diff)