Subversion-Projekte lars-tiefland.ci

// CodeMirror, copyright (c) by Marijn Haverbeke and others

// Distributed under an MIT license: http://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) {

    for (var at = column; at > 0; --at)

      if (wrapOn.test(text.slice(at - 1, at + 1))) break;

    if (at == 0) at = column;

    var endOfText = at;

    if (killTrailingSpace)

      while (text.charAt(endOfText - 1) == " ") --endOfText;

    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];

    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 += " ";

        spaceInserted = 1;

      }

      var spaceTrimmed = "";

      if (i) {

        spaceTrimmed = text.match(/^\s*/)[0];

        text = text.slice(spaceTrimmed.length);

      }

      curLine += text;

      if (i) {

        var firstBreak = curLine.length > column && leadingSpace == spaceTrimmed &&

          findBreakPoint(curLine, column, wrapOn, killTrailing);

        // If this isn't broken, or is broken at a different point, remove old break

        if (!firstBreak || firstBreak.from != oldLen || firstBreak.to != oldLen + spaceInserted) {

          changes.push({text: [spaceInserted ? " " : ""],

                        from: Pos(curNo, oldLen),

                        to: Pos(curNo + 1, spaceTrimmed.length)});

        } else {

          curLine = leadingSpace + text;

          ++curNo;

        }

      }

      while (curLine.length > column) {

        var bp = findBreakPoint(curLine, column, wrapOn, killTrailing);

        changes.push({text: ["", leadingSpace],

                      from: Pos(curNo, bp.from),

                      to: Pos(curNo, bp.to)});

        curLine = leadingSpace + curLine.slice(bp.to);

        ++curNo;

      }

    }

    if (changes.length) cm.operation(function() {

      for (var i = 0; i < changes.length; ++i) {

        var change = changes[i];

        cm.replaceRange(change.text, change.from, change.to);

      }

    });

    return changes.length ? {from: changes[0].from, to: CodeMirror.changeEnd(changes[changes.length - 1])} : null;

  }

  CodeMirror.defineExtension("wrapParagraph", function(pos, options) {

    options = options || {};

    if (!pos) pos = this.getCursor();

    var para = findParagraph(this, pos, options);

    return wrapRange(this, Pos(para.from, 0), Pos(para.to - 1), options);

  });

  CodeMirror.commands.wrapLines = function(cm) {

    cm.operation(function() {

      var ranges = cm.listSelections(), at = cm.lastLine() + 1;

      for (var i = ranges.length - 1; i >= 0; i--) {

        var range = ranges[i], span;

        if (range.empty()) {

          var para = findParagraph(cm, range.head, {});

          span = {from: Pos(para.from, 0), to: Pos(para.to - 1)};

        } else {

          span = {from: range.from(), to: range.to()};

        }

        if (span.to.line >= at) continue;

        at = span.from.line;

        wrapRange(cm, span.from, span.to, {});

      }

    });

  };

  CodeMirror.defineExtension("wrapRange", function(from, to, options) {

    return wrapRange(this, from, to, options || {});

  });

  CodeMirror.defineExtension("wrapParagraphsInRange", function(from, to, options) {

    options = options || {};

    var cm = this, paras = [];

    for (var line = from.line; line <= to.line;) {

      var para = findParagraph(cm, Pos(line, 0), options);

      paras.push(para);

      line = para.to;

    }

    var madeChange = false;

    if (paras.length) cm.operation(function() {

      for (var i = paras.length - 1; i >= 0; --i)

        madeChange = madeChange || wrapRange(cm, Pos(paras[i].from, 0), Pos(paras[i].to - 1), options);

    });

    return madeChange;

  });

});