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Use recursion to substitute text

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This commit is contained in:
Corey Johnson & Nathan Sobo
2012-03-21 16:29:00 -07:00
parent 65a0d099bc
commit 12c315ecfd
1 changed files with 19 additions and 11 deletions
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30
src/atom/command-interpreter/substitution.coffee
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@@ -3,21 +3,29 @@ class Substitution
global: false
constructor: (@findText, @replaceText, @options) ->
@findRegex = new RegExp(@findText, "g")
@findRegex = new RegExp(@findText)
@global = 'g' in @options
perform: (editor) ->
{ buffer } = editor
selectedText = editor.getSelectedText()
selectionStartIndex = buffer.characterIndexForPosition(editor.getSelection().getBufferRange().start)
selectionStartIndex = editor.buffer.characterIndexForPosition(editor.getSelection().getBufferRange().start)
selectionEndIndex = selectionStartIndex + selectedText.length
while match = @findRegex.exec(selectedText)
matchStartIndex = selectionStartIndex + match.index
matchEndIndex = matchStartIndex + match[0].length
@replace(editor, selectedText, selectionStartIndex)
startPosition = buffer.positionForCharacterIndex(matchStartIndex)
endPosition = buffer.positionForCharacterIndex(matchEndIndex)
replace: (editor, text, startIndex) ->
return unless match = text.match(@findRegex)
buffer.change([startPosition, endPosition], @replaceText)
break unless @global
selectedText = editor.getSelectedText()
matchStartIndex = startIndex + match.index
matchEndIndex = matchStartIndex + match[0].length
buffer = editor.buffer
startPosition = buffer.positionForCharacterIndex(matchStartIndex)
endPosition = buffer.positionForCharacterIndex(matchEndIndex)
buffer.change([startPosition, endPosition], @replaceText)
if @global
text = text[(match.index + match[0].length)..]
startIndex = matchStartIndex + @replaceText.length
@replace(editor, text, startIndex)