hardwrap.min.js (5479B)
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 (function(mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("../../lib/codemirror")); 7 else if (typeof define == "function" && define.amd) // AMD 8 define(["../../lib/codemirror"], mod); 9 else // Plain browser env 10 mod(CodeMirror); 11 })(function(CodeMirror) { 12 "use strict"; 13 14 var Pos = CodeMirror.Pos; 15 16 function findParagraph(cm, pos, options) { 17 var startRE = options.paragraphStart || cm.getHelper(pos, "paragraphStart"); 18 for (var start = pos.line, first = cm.firstLine(); start > first; --start) { 19 var line = cm.getLine(start); 20 if (startRE && startRE.test(line)) break; 21 if (!/\S/.test(line)) { ++start; break; } 22 } 23 var endRE = options.paragraphEnd || cm.getHelper(pos, "paragraphEnd"); 24 for (var end = pos.line + 1, last = cm.lastLine(); end <= last; ++end) { 25 var line = cm.getLine(end); 26 if (endRE && endRE.test(line)) { ++end; break; } 27 if (!/\S/.test(line)) break; 28 } 29 return {from: start, to: end}; 30 } 31 32 function findBreakPoint(text, column, wrapOn, killTrailingSpace) { 33 var at = column 34 while (at < text.length && text.charAt(at) == " ") at++ 35 for (; at > 0; --at) 36 if (wrapOn.test(text.slice(at - 1, at + 1))) break; 37 for (var first = true;; first = false) { 38 var endOfText = at; 39 if (killTrailingSpace) 40 while (text.charAt(endOfText - 1) == " ") --endOfText; 41 if (endOfText == 0 && first) at = column; 42 else return {from: endOfText, to: at}; 43 } 44 } 45 46 function wrapRange(cm, from, to, options) { 47 from = cm.clipPos(from); to = cm.clipPos(to); 48 var column = options.column || 80; 49 var wrapOn = options.wrapOn || /\s\S|-[^\.\d]/; 50 var killTrailing = options.killTrailingSpace !== false; 51 var changes = [], curLine = "", curNo = from.line; 52 var lines = cm.getRange(from, to, false); 53 if (!lines.length) return null; 54 var leadingSpace = lines[0].match(/^[ \t]*/)[0]; 55 56 for (var i = 0; i < lines.length; ++i) { 57 var text = lines[i], oldLen = curLine.length, spaceInserted = 0; 58 if (curLine && text && !wrapOn.test(curLine.charAt(curLine.length - 1) + text.charAt(0))) { 59 curLine += " "; 60 spaceInserted = 1; 61 } 62 var spaceTrimmed = ""; 63 if (i) { 64 spaceTrimmed = text.match(/^\s*/)[0]; 65 text = text.slice(spaceTrimmed.length); 66 } 67 curLine += text; 68 if (i) { 69 var firstBreak = curLine.length > column && leadingSpace == spaceTrimmed && 70 findBreakPoint(curLine, column, wrapOn, killTrailing); 71 // If this isn't broken, or is broken at a different point, remove old break 72 if (!firstBreak || firstBreak.from != oldLen || firstBreak.to != oldLen + spaceInserted) { 73 changes.push({text: [spaceInserted ? " " : ""], 74 from: Pos(curNo, oldLen), 75 to: Pos(curNo + 1, spaceTrimmed.length)}); 76 } else { 77 curLine = leadingSpace + text; 78 ++curNo; 79 } 80 } 81 while (curLine.length > column) { 82 var bp = findBreakPoint(curLine, column, wrapOn, killTrailing); 83 changes.push({text: ["", leadingSpace], 84 from: Pos(curNo, bp.from), 85 to: Pos(curNo, bp.to)}); 86 curLine = leadingSpace + curLine.slice(bp.to); 87 ++curNo; 88 } 89 } 90 if (changes.length) cm.operation(function() { 91 for (var i = 0; i < changes.length; ++i) { 92 var change = changes[i]; 93 if (change.text || CodeMirror.cmpPos(change.from, change.to)) 94 cm.replaceRange(change.text, change.from, change.to); 95 } 96 }); 97 return changes.length ? {from: changes[0].from, to: CodeMirror.changeEnd(changes[changes.length - 1])} : null; 98 } 99 100 CodeMirror.defineExtension("wrapParagraph", function(pos, options) { 101 options = options || {}; 102 if (!pos) pos = this.getCursor(); 103 var para = findParagraph(this, pos, options); 104 return wrapRange(this, Pos(para.from, 0), Pos(para.to - 1), options); 105 }); 106 107 CodeMirror.commands.wrapLines = function(cm) { 108 cm.operation(function() { 109 var ranges = cm.listSelections(), at = cm.lastLine() + 1; 110 for (var i = ranges.length - 1; i >= 0; i--) { 111 var range = ranges[i], span; 112 if (range.empty()) { 113 var para = findParagraph(cm, range.head, {}); 114 span = {from: Pos(para.from, 0), to: Pos(para.to - 1)}; 115 } else { 116 span = {from: range.from(), to: range.to()}; 117 } 118 if (span.to.line >= at) continue; 119 at = span.from.line; 120 wrapRange(cm, span.from, span.to, {}); 121 } 122 }); 123 }; 124 125 CodeMirror.defineExtension("wrapRange", function(from, to, options) { 126 return wrapRange(this, from, to, options || {}); 127 }); 128 129 CodeMirror.defineExtension("wrapParagraphsInRange", function(from, to, options) { 130 options = options || {}; 131 var cm = this, paras = []; 132 for (var line = from.line; line <= to.line;) { 133 var para = findParagraph(cm, Pos(line, 0), options); 134 paras.push(para); 135 line = para.to; 136 } 137 var madeChange = false; 138 if (paras.length) cm.operation(function() { 139 for (var i = paras.length - 1; i >= 0; --i) 140 madeChange = madeChange || wrapRange(cm, Pos(paras[i].from, 0), Pos(paras[i].to - 1), options); 141 }); 142 return madeChange; 143 }); 144 });