fc2291e5687166730bc9040250deb4dc.js 6.6 KB

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  1. ace.define("ace/ext/whitespace",["require","exports","module","ace/lib/lang"], function(require, exports, module){"use strict";
  2. var lang = require("../lib/lang");
  3. exports.$detectIndentation = function (lines, fallback) {
  4. var stats = [];
  5. var changes = [];
  6. var tabIndents = 0;
  7. var prevSpaces = 0;
  8. var max = Math.min(lines.length, 1000);
  9. for (var i = 0; i < max; i++) {
  10. var line = lines[i];
  11. if (!/^\s*[^*+\-\s]/.test(line))
  12. continue;
  13. if (line[0] == "\t") {
  14. tabIndents++;
  15. prevSpaces = -Number.MAX_VALUE;
  16. }
  17. else {
  18. var spaces = line.match(/^ */)[0].length;
  19. if (spaces && line[spaces] != "\t") {
  20. var diff = spaces - prevSpaces;
  21. if (diff > 0 && !(prevSpaces % diff) && !(spaces % diff))
  22. changes[diff] = (changes[diff] || 0) + 1;
  23. stats[spaces] = (stats[spaces] || 0) + 1;
  24. }
  25. prevSpaces = spaces;
  26. }
  27. while (i < max && line[line.length - 1] == "\\")
  28. line = lines[i++];
  29. }
  30. function getScore(indent) {
  31. var score = 0;
  32. for (var i = indent; i < stats.length; i += indent)
  33. score += stats[i] || 0;
  34. return score;
  35. }
  36. var changesTotal = changes.reduce(function (a, b) { return a + b; }, 0);
  37. var first = { score: 0, length: 0 };
  38. var spaceIndents = 0;
  39. for (var i = 1; i < 12; i++) {
  40. var score = getScore(i);
  41. if (i == 1) {
  42. spaceIndents = score;
  43. score = stats[1] ? 0.9 : 0.8;
  44. if (!stats.length)
  45. score = 0;
  46. }
  47. else
  48. score /= spaceIndents;
  49. if (changes[i])
  50. score += changes[i] / changesTotal;
  51. if (score > first.score)
  52. first = { score: score, length: i };
  53. }
  54. if (first.score && first.score > 1.4)
  55. var tabLength = first.length;
  56. if (tabIndents > spaceIndents + 1) {
  57. if (tabLength == 1 || spaceIndents < tabIndents / 4 || first.score < 1.8)
  58. tabLength = undefined;
  59. return { ch: "\t", length: tabLength };
  60. }
  61. if (spaceIndents > tabIndents + 1)
  62. return { ch: " ", length: tabLength };
  63. };
  64. exports.detectIndentation = function (session) {
  65. var lines = session.getLines(0, 1000);
  66. var indent = exports.$detectIndentation(lines) || {};
  67. if (indent.ch)
  68. session.setUseSoftTabs(indent.ch == " ");
  69. if (indent.length)
  70. session.setTabSize(indent.length);
  71. return indent;
  72. };
  73. exports.trimTrailingSpace = function (session, options) {
  74. var doc = session.getDocument();
  75. var lines = doc.getAllLines();
  76. var min = options && options.trimEmpty ? -1 : 0;
  77. var cursors = [], ci = -1;
  78. if (options && options.keepCursorPosition) {
  79. if (session.selection.rangeCount) {
  80. session.selection.rangeList.ranges.forEach(function (x, i, ranges) {
  81. var next = ranges[i + 1];
  82. if (next && next.cursor.row == x.cursor.row)
  83. return;
  84. cursors.push(x.cursor);
  85. });
  86. }
  87. else {
  88. cursors.push(session.selection.getCursor());
  89. }
  90. ci = 0;
  91. }
  92. var cursorRow = cursors[ci] && cursors[ci].row;
  93. for (var i = 0, l = lines.length; i < l; i++) {
  94. var line = lines[i];
  95. var index = line.search(/\s+$/);
  96. if (i == cursorRow) {
  97. if (index < cursors[ci].column && index > min)
  98. index = cursors[ci].column;
  99. ci++;
  100. cursorRow = cursors[ci] ? cursors[ci].row : -1;
  101. }
  102. if (index > min)
  103. doc.removeInLine(i, index, line.length);
  104. }
  105. };
  106. exports.convertIndentation = function (session, ch, len) {
  107. var oldCh = session.getTabString()[0];
  108. var oldLen = session.getTabSize();
  109. if (!len)
  110. len = oldLen;
  111. if (!ch)
  112. ch = oldCh;
  113. var tab = ch == "\t" ? ch : lang.stringRepeat(ch, len);
  114. var doc = session.doc;
  115. var lines = doc.getAllLines();
  116. var cache = {};
  117. var spaceCache = {};
  118. for (var i = 0, l = lines.length; i < l; i++) {
  119. var line = lines[i];
  120. var match = line.match(/^\s*/)[0];
  121. if (match) {
  122. var w = session.$getStringScreenWidth(match)[0];
  123. var tabCount = Math.floor(w / oldLen);
  124. var reminder = w % oldLen;
  125. var toInsert = cache[tabCount] || (cache[tabCount] = lang.stringRepeat(tab, tabCount));
  126. toInsert += spaceCache[reminder] || (spaceCache[reminder] = lang.stringRepeat(" ", reminder));
  127. if (toInsert != match) {
  128. doc.removeInLine(i, 0, match.length);
  129. doc.insertInLine({ row: i, column: 0 }, toInsert);
  130. }
  131. }
  132. }
  133. session.setTabSize(len);
  134. session.setUseSoftTabs(ch == " ");
  135. };
  136. exports.$parseStringArg = function (text) {
  137. var indent = {};
  138. if (/t/.test(text))
  139. indent.ch = "\t";
  140. else if (/s/.test(text))
  141. indent.ch = " ";
  142. var m = text.match(/\d+/);
  143. if (m)
  144. indent.length = parseInt(m[0], 10);
  145. return indent;
  146. };
  147. exports.$parseArg = function (arg) {
  148. if (!arg)
  149. return {};
  150. if (typeof arg == "string")
  151. return exports.$parseStringArg(arg);
  152. if (typeof arg.text == "string")
  153. return exports.$parseStringArg(arg.text);
  154. return arg;
  155. };
  156. exports.commands = [{
  157. name: "detectIndentation",
  158. description: "Detect indentation from content",
  159. exec: function (editor) {
  160. exports.detectIndentation(editor.session);
  161. }
  162. }, {
  163. name: "trimTrailingSpace",
  164. description: "Trim trailing whitespace",
  165. exec: function (editor, args) {
  166. exports.trimTrailingSpace(editor.session, args);
  167. }
  168. }, {
  169. name: "convertIndentation",
  170. description: "Convert indentation to ...",
  171. exec: function (editor, arg) {
  172. var indent = exports.$parseArg(arg);
  173. exports.convertIndentation(editor.session, indent.ch, indent.length);
  174. }
  175. }, {
  176. name: "setIndentation",
  177. description: "Set indentation",
  178. exec: function (editor, arg) {
  179. var indent = exports.$parseArg(arg);
  180. indent.length && editor.session.setTabSize(indent.length);
  181. indent.ch && editor.session.setUseSoftTabs(indent.ch == " ");
  182. }
  183. }];
  184. }); (function() {
  185. ace.require(["ace/ext/whitespace"], function(m) {
  186. if (typeof module == "object" && typeof exports == "object" && module) {
  187. module.exports = m;
  188. }
  189. });
  190. })();