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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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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, forceBreak) {
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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
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38 if (!forceBreak && at <= text.match(/^[ \t]*/)[0].length) {
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39 // didn't find a break point before column, in non-forceBreak mode try to
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40 // find one after 'column'.
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41 for (at = column + 1; at < text.length - 1; ++at) {
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42 if (wrapOn.test(text.slice(at - 1, at + 1))) break;
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43 }
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44 }
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45
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46 for (var first = true;; first = false) {
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47 var endOfText = at;
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48 if (killTrailingSpace)
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49 while (text.charAt(endOfText - 1) == " ") --endOfText;
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50 if (endOfText == 0 && first) at = column;
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51 else return {from: endOfText, to: at};
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52 }
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53 }
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54
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55 function wrapRange(cm, from, to, options) {
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56 from = cm.clipPos(from); to = cm.clipPos(to);
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57 var column = options.column || 80;
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58 var wrapOn = options.wrapOn || /\s\S|-[^\.\d]/;
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59 var forceBreak = options.forceBreak !== false;
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60 var killTrailing = options.killTrailingSpace !== false;
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61 var changes = [], curLine = "", curNo = from.line;
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62 var lines = cm.getRange(from, to, false);
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63 if (!lines.length) return null;
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64 var leadingSpace = lines[0].match(/^[ \t]*/)[0];
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65 if (leadingSpace.length >= column) column = leadingSpace.length + 1
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66
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67 for (var i = 0; i < lines.length; ++i) {
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68 var text = lines[i], oldLen = curLine.length, spaceInserted = 0;
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69 if (curLine && text && !wrapOn.test(curLine.charAt(curLine.length - 1) + text.charAt(0))) {
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70 curLine += " ";
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71 spaceInserted = 1;
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72 }
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73 var spaceTrimmed = "";
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74 if (i) {
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75 spaceTrimmed = text.match(/^\s*/)[0];
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76 text = text.slice(spaceTrimmed.length);
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77 }
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78 curLine += text;
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79 if (i) {
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80 var firstBreak = curLine.length > column && leadingSpace == spaceTrimmed &&
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81 findBreakPoint(curLine, column, wrapOn, killTrailing, forceBreak);
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82 // If this isn't broken, or is broken at a different point, remove old break
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83 if (!firstBreak || firstBreak.from != oldLen || firstBreak.to != oldLen + spaceInserted) {
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84 changes.push({text: [spaceInserted ? " " : ""],
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85 from: Pos(curNo, oldLen),
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86 to: Pos(curNo + 1, spaceTrimmed.length)});
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87 } else {
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88 curLine = leadingSpace + text;
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89 ++curNo;
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90 }
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91 }
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92 while (curLine.length > column) {
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93 var bp = findBreakPoint(curLine, column, wrapOn, killTrailing, forceBreak);
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94 if (bp.from != bp.to ||
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95 forceBreak && leadingSpace !== curLine.slice(0, bp.to)) {
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96 changes.push({text: ["", leadingSpace],
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97 from: Pos(curNo, bp.from),
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98 to: Pos(curNo, bp.to)});
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99 curLine = leadingSpace + curLine.slice(bp.to);
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100 ++curNo;
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101 } else {
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102 break;
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103 }
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104 }
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105 }
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106 if (changes.length) cm.operation(function() {
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107 for (var i = 0; i < changes.length; ++i) {
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108 var change = changes[i];
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109 if (change.text || CodeMirror.cmpPos(change.from, change.to))
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110 cm.replaceRange(change.text, change.from, change.to);
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111 }
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112 });
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113 return changes.length ? {from: changes[0].from, to: CodeMirror.changeEnd(changes[changes.length - 1])} : null;
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114 }
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115
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116 CodeMirror.defineExtension("wrapParagraph", function(pos, options) {
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117 options = options || {};
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118 if (!pos) pos = this.getCursor();
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119 var para = findParagraph(this, pos, options);
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120 return wrapRange(this, Pos(para.from, 0), Pos(para.to - 1), options);
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121 });
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122
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123 CodeMirror.commands.wrapLines = function(cm) {
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124 cm.operation(function() {
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125 var ranges = cm.listSelections(), at = cm.lastLine() + 1;
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126 for (var i = ranges.length - 1; i >= 0; i--) {
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127 var range = ranges[i], span;
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128 if (range.empty()) {
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129 var para = findParagraph(cm, range.head, {});
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130 span = {from: Pos(para.from, 0), to: Pos(para.to - 1)};
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131 } else {
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132 span = {from: range.from(), to: range.to()};
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133 }
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134 if (span.to.line >= at) continue;
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135 at = span.from.line;
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136 wrapRange(cm, span.from, span.to, {});
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137 }
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138 });
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139 };
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140
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141 CodeMirror.defineExtension("wrapRange", function(from, to, options) {
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142 return wrapRange(this, from, to, options || {});
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143 });
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144
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145 CodeMirror.defineExtension("wrapParagraphsInRange", function(from, to, options) {
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146 options = options || {};
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147 var cm = this, paras = [];
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148 for (var line = from.line; line <= to.line;) {
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149 var para = findParagraph(cm, Pos(line, 0), options);
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150 paras.push(para);
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151 line = para.to;
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152 }
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153 var madeChange = false;
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154 if (paras.length) cm.operation(function() {
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155 for (var i = paras.length - 1; i >= 0; --i)
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156 madeChange = madeChange || wrapRange(cm, Pos(paras[i].from, 0), Pos(paras[i].to - 1), options);
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157 });
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158 return madeChange;
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159 });
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160 });
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