1 |
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2 |
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3 |
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4 | (function(mod) {
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5 | if (typeof exports == "object" && typeof module == "object")
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6 | mod(require("../../lib/codemirror"));
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7 | else if (typeof define == "function" && define.amd)
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8 | define(["../../lib/codemirror"], mod);
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9 | else
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10 | mod(CodeMirror);
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11 | })(function(CodeMirror) {
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12 | "use strict";
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13 |
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14 | var Pos = CodeMirror.Pos;
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15 |
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16 | function findParagraph(cm, pos, options) {
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17 | var startRE = options.paragraphStart || cm.getHelper(pos, "paragraphStart");
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18 | for (var start = pos.line, first = cm.firstLine(); start > first; --start) {
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19 | var line = cm.getLine(start);
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20 | if (startRE && startRE.test(line)) break;
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21 | if (!/\S/.test(line)) { ++start; break; }
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22 | }
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23 | var endRE = options.paragraphEnd || cm.getHelper(pos, "paragraphEnd");
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24 | for (var end = pos.line + 1, last = cm.lastLine(); end <= last; ++end) {
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25 | var line = cm.getLine(end);
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26 | if (endRE && endRE.test(line)) { ++end; break; }
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27 | if (!/\S/.test(line)) break;
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28 | }
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29 | return {from: start, to: end};
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30 | }
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31 |
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32 | function findBreakPoint(text, column, wrapOn, killTrailingSpace) {
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33 | var at = column
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34 | while (at < text.length && text.charAt(at) == " ") at++
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35 | for (; at > 0; --at)
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36 | if (wrapOn.test(text.slice(at - 1, at + 1))) break;
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37 | for (var first = true;; first = false) {
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38 | var endOfText = at;
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39 | if (killTrailingSpace)
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40 | while (text.charAt(endOfText - 1) == " ") --endOfText;
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41 | if (endOfText == 0 && first) at = column;
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42 | else return {from: endOfText, to: at};
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43 | }
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44 | }
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45 |
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46 | function wrapRange(cm, from, to, options) {
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47 | from = cm.clipPos(from); to = cm.clipPos(to);
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48 | var column = options.column || 80;
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49 | var wrapOn = options.wrapOn || /\s\S|-[^\.\d]/;
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50 | var killTrailing = options.killTrailingSpace !== false;
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51 | var changes = [], curLine = "", curNo = from.line;
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52 | var lines = cm.getRange(from, to, false);
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53 | if (!lines.length) return null;
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54 | var leadingSpace = lines[0].match(/^[ \t]*/)[0];
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55 | if (leadingSpace.length >= column) column = leadingSpace.length + 1
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56 |
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57 | for (var i = 0; i < lines.length; ++i) {
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58 | var text = lines[i], oldLen = curLine.length, spaceInserted = 0;
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59 | if (curLine && text && !wrapOn.test(curLine.charAt(curLine.length - 1) + text.charAt(0))) {
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60 | curLine += " ";
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61 | spaceInserted = 1;
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62 | }
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63 | var spaceTrimmed = "";
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64 | if (i) {
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65 | spaceTrimmed = text.match(/^\s*/)[0];
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66 | text = text.slice(spaceTrimmed.length);
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67 | }
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68 | curLine += text;
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69 | if (i) {
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70 | var firstBreak = curLine.length > column && leadingSpace == spaceTrimmed &&
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71 | findBreakPoint(curLine, column, wrapOn, killTrailing);
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72 |
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73 | if (!firstBreak || firstBreak.from != oldLen || firstBreak.to != oldLen + spaceInserted) {
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74 | changes.push({text: [spaceInserted ? " " : ""],
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75 | from: Pos(curNo, oldLen),
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76 | to: Pos(curNo + 1, spaceTrimmed.length)});
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77 | } else {
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78 | curLine = leadingSpace + text;
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79 | ++curNo;
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80 | }
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81 | }
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82 | while (curLine.length > column) {
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83 | var bp = findBreakPoint(curLine, column, wrapOn, killTrailing);
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84 | changes.push({text: ["", leadingSpace],
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85 | from: Pos(curNo, bp.from),
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86 | to: Pos(curNo, bp.to)});
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87 | curLine = leadingSpace + curLine.slice(bp.to);
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88 | ++curNo;
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89 | }
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90 | }
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91 | if (changes.length) cm.operation(function() {
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92 | for (var i = 0; i < changes.length; ++i) {
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93 | var change = changes[i];
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94 | if (change.text || CodeMirror.cmpPos(change.from, change.to))
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95 | cm.replaceRange(change.text, change.from, change.to);
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96 | }
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97 | });
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98 | return changes.length ? {from: changes[0].from, to: CodeMirror.changeEnd(changes[changes.length - 1])} : null;
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99 | }
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100 |
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101 | CodeMirror.defineExtension("wrapParagraph", function(pos, options) {
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102 | options = options || {};
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103 | if (!pos) pos = this.getCursor();
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104 | var para = findParagraph(this, pos, options);
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105 | return wrapRange(this, Pos(para.from, 0), Pos(para.to - 1), options);
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106 | });
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107 |
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108 | CodeMirror.commands.wrapLines = function(cm) {
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109 | cm.operation(function() {
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110 | var ranges = cm.listSelections(), at = cm.lastLine() + 1;
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111 | for (var i = ranges.length - 1; i >= 0; i--) {
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112 | var range = ranges[i], span;
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113 | if (range.empty()) {
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114 | var para = findParagraph(cm, range.head, {});
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115 | span = {from: Pos(para.from, 0), to: Pos(para.to - 1)};
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116 | } else {
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117 | span = {from: range.from(), to: range.to()};
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118 | }
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119 | if (span.to.line >= at) continue;
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120 | at = span.from.line;
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121 | wrapRange(cm, span.from, span.to, {});
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122 | }
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123 | });
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124 | };
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125 |
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126 | CodeMirror.defineExtension("wrapRange", function(from, to, options) {
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127 | return wrapRange(this, from, to, options || {});
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128 | });
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129 |
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130 | CodeMirror.defineExtension("wrapParagraphsInRange", function(from, to, options) {
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131 | options = options || {};
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132 | var cm = this, paras = [];
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133 | for (var line = from.line; line <= to.line;) {
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134 | var para = findParagraph(cm, Pos(line, 0), options);
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135 | paras.push(para);
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136 | line = para.to;
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137 | }
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138 | var madeChange = false;
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139 | if (paras.length) cm.operation(function() {
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140 | for (var i = paras.length - 1; i >= 0; --i)
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141 | madeChange = madeChange || wrapRange(cm, Pos(paras[i].from, 0), Pos(paras[i].to - 1), options);
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142 | });
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143 | return madeChange;
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144 | });
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145 | });
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