js2coffee

newLine = /^\s*\n+\s*$/ ### # Strips spaces out of the SourceNode. ### stripSpaces = (node) -> node = stripPre(node) node = stripPost(node) node = stripMid(node) node = stripIndents(node) node ### # Strip lines that only have indents ### stripIndents = (node) -> step = 0 indent = null replace node, {}, (str) -> # Wait for "\n" if step is 0 or step is 1 and str.match(newLine) step = 1 str # Followed by spaces (supress it) else if step is 1 and str.match(/^[ \t]+$/) indent = str step = 2 "" # Then merge the spaces into the next tode else if step is 2 step = 1 if str.match(newLine) str else indent + str else step = 0 str ### # Strip beginning newlines. ### stripPre = (node) -> replace node, {}, (str) -> if str.match(newLine) "" else @break() str ### # Strip ending newlines. ### stripPost = (node) -> replace node, reverse: true, (str) -> if str.match(newLine) "" else @break() "#{str}\n" ### # Strip triple new lines. ### stripMid = (node) -> streak = 0 replace node, {}, (n) -> if n is "\n" streak += 1 else if n.match(/^\s*$/) # pass else streak = 0 if streak >= 3 then "" else n ### # Walk and replace. # # replace node, {}, (str) -> # if str is "true" # "replacement" # else # str ### replace = (node, options = {}, fn) -> broken = false ctx = break: (str) -> broken = true walk = (node, options = {}, fn) -> range = if options.reverse [node.children.length-1..0] else [0...node.children.length] for i in range return node if broken child = node.children[i] if !child # pass else if child.children walk child, options, fn else if child isnt '' output = fn.call(ctx, child) node.children[i] = output node walk.call ctx, node, options, fn module.exports = stripSpaces