basic edition impl

util/src/main/coffee/edition.coffee

@@ -0,0 +1,79 @@
+Citation2tag =
+  article: ['div', 'type']
+  section: ['milestone', 'unit']
+  chapter: ['milestone', 'unit']
+  page: ['milestone', 'unit']
+  book: ['div', 'type']
+  text: ['text']
+  line: ['l']
+  scene: ['div', 'type']
+  act: ['div', 'type']
+  entry: ['div', 'type']
+  card: ['milestone', 'unit']
+  speech: ['div', 'type']
+  root: ['div', 'type']
+  poem: ['div', 'type']
+
+class Edition
+  constructor: (@citationScheme, @passageSelector, @annotator, @text) ->
+    annotate(@text, @annotator)
+    @passage = selectPassage(@text, @citationScheme, @passageSelector)
+    @parents = parents(@passage)
+
+  find: (path) ->
+    wrap(@text, @passage, @parents).find(path)
+
+  annotate = (text, annotator) ->
+    stack = [@text]
+    while node = stack.pop()
+      for childNode in node.childNodes
+        cursor = childNode
+        if childNode.name() == 'text'
+          for annotation in annotator.annotate(childNode.text())
+            annotationNode = childNode.node('annotation', annotation.form)
+            annotationNode.attr(annotation)
+            cursor.addNextSibling(annotationNode)
+          childNode.remove()
+        else
+          stack.push(childNode)
+
+  selectPassage = (citationScheme, passageSelector, text) ->
+    return xml if !passageSelector
+    return unless text = xml.get('/TEI.2/text')
+    passageSelectorParts = passageSelector.split('.')
+    passage = text
+    for citation, i in citationMapping
+      break if i > passageSelectorParts.length - 1
+
+      [tag, attr] = Citation2tag[label = citation.label]
+      xpath = ".//#{tag}"
+      xpath += "[" + (if attr then "@#{attr}='#{label}' and " else '') + "@n='#{passageSelectorParts[i]}']"
+      node = text.get(xpath)
+      return unless node
+    node
+
+  parents = (passage) ->
+    parents = new Set
+    node = passage
+
+    parents.add(node)
+    while node.parent && (node = node.parent())
+      parents.add(node)
+    parents
+
+  wrap = (node, passage, parents) ->
+    find: (path) ->
+      for found in passage.find(path) when parents.has(found)
+        if found == passage
+          passage
+        else
+          wrap(found, passage, parents)
+    attr: (name) ->
+      node.attr(name)
+    text: ->
+      node.text()
+    path: ->
+      node.path()
+
+module.exports =
+  Edition: Edition