Incs/codemirror/addon/wrap/hardwrap.js

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var Pos = CodeMirror.Pos;

  function findParagraph(cm, pos, options) {
    var startRE = options.paragraphStart || cm.getHelper(pos, "paragraphStart");
    for (var start = pos.line, first = cm.firstLine(); start > first; --start) {
      var line = cm.getLine(start);
      if (startRE && startRE.test(line)) break;
      if (!/\S/.test(line)) { ++start; break; }
    }
    var endRE = options.paragraphEnd || cm.getHelper(pos, "paragraphEnd");
    for (var end = pos.line + 1, last = cm.lastLine(); end <= last; ++end) {
      var line = cm.getLine(end);
      if (endRE && endRE.test(line)) { ++end; break; }
      if (!/\S/.test(line)) break;
    }
    return {from: start, to: end};
  }

  function findBreakPoint(text, column, wrapOn, killTrailingSpace) {
    var at = column
    while (at < text.length && text.charAt(at) == " ") at++
    for (; at > 0; --at)
      if (wrapOn.test(text.slice(at - 1, at + 1))) break;
    for (var first = true;; first = false) {
      var endOfText = at;
      if (killTrailingSpace)
        while (text.charAt(endOfText - 1) == " ") --endOfText;
      if (endOfText == 0 && first) at = column;
      else return {from: endOfText, to: at};
    }
  }

  function wrapRange(cm, from, to, options) {
    from = cm.clipPos(from); to = cm.clipPos(to);
    var column = options.column || 80;
    var wrapOn = options.wrapOn || /\s\S|-[^\.\d]/;
    var killTrailing = options.killTrailingSpace !== false;
    var changes = [], curLine = "", curNo = from.line;
    var lines = cm.getRange(from, to, false);
    if (!lines.length) return null;
    var leadingSpace = lines[0].match(/^[ \t]*/)[0];
    if (leadingSpace.length >= column) column = leadingSpace.length + 1

    for (var i = 0; i < lines.length; ++i) {
      var text = lines[i], oldLen = curLine.length, spaceInserted = 0;
      if (curLine && text && !wrapOn.test(curLine.charAt(curLine.length - 1) + text.charAt(0))) {
        curLine += " ";