admin | bae64d8 | 2013-08-01 10:50:15 -0700 | [diff] [blame^] | 1 | // the tagRangeFinder function is |
| 2 | // Copyright (C) 2011 by Daniel Glazman <daniel@glazman.org> |
| 3 | // released under the MIT license (../../LICENSE) like the rest of CodeMirror |
| 4 | CodeMirror.tagRangeFinder = function(cm, line, hideEnd) { |
| 5 | var nameStartChar = "A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD"; |
| 6 | var nameChar = nameStartChar + "\-\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040"; |
| 7 | var xmlNAMERegExp = new RegExp("^[" + nameStartChar + "][" + nameChar + "]*"); |
| 8 | |
| 9 | var lineText = cm.getLine(line); |
| 10 | var found = false; |
| 11 | var tag = null; |
| 12 | var pos = 0; |
| 13 | while (!found) { |
| 14 | pos = lineText.indexOf("<", pos); |
| 15 | if (-1 == pos) // no tag on line |
| 16 | return; |
| 17 | if (pos + 1 < lineText.length && lineText[pos + 1] == "/") { // closing tag |
| 18 | pos++; |
| 19 | continue; |
| 20 | } |
| 21 | // ok we weem to have a start tag |
| 22 | if (!lineText.substr(pos + 1).match(xmlNAMERegExp)) { // not a tag name... |
| 23 | pos++; |
| 24 | continue; |
| 25 | } |
| 26 | var gtPos = lineText.indexOf(">", pos + 1); |
| 27 | if (-1 == gtPos) { // end of start tag not in line |
| 28 | var l = line + 1; |
| 29 | var foundGt = false; |
| 30 | var lastLine = cm.lineCount(); |
| 31 | while (l < lastLine && !foundGt) { |
| 32 | var lt = cm.getLine(l); |
| 33 | var gt = lt.indexOf(">"); |
| 34 | if (-1 != gt) { // found a > |
| 35 | foundGt = true; |
| 36 | var slash = lt.lastIndexOf("/", gt); |
| 37 | if (-1 != slash && slash < gt) { |
| 38 | var str = lineText.substr(slash, gt - slash + 1); |
| 39 | if (!str.match( /\/\s*\>/ )) { // yep, that's the end of empty tag |
| 40 | if (hideEnd === true) l++; |
| 41 | return l; |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | l++; |
| 46 | } |
| 47 | found = true; |
| 48 | } |
| 49 | else { |
| 50 | var slashPos = lineText.lastIndexOf("/", gtPos); |
| 51 | if (-1 == slashPos) { // cannot be empty tag |
| 52 | found = true; |
| 53 | // don't continue |
| 54 | } |
| 55 | else { // empty tag? |
| 56 | // check if really empty tag |
| 57 | var str = lineText.substr(slashPos, gtPos - slashPos + 1); |
| 58 | if (!str.match( /\/\s*\>/ )) { // finally not empty |
| 59 | found = true; |
| 60 | // don't continue |
| 61 | } |
| 62 | } |
| 63 | } |
| 64 | if (found) { |
| 65 | var subLine = lineText.substr(pos + 1); |
| 66 | tag = subLine.match(xmlNAMERegExp); |
| 67 | if (tag) { |
| 68 | // we have an element name, wooohooo ! |
| 69 | tag = tag[0]; |
| 70 | // do we have the close tag on same line ??? |
| 71 | if (-1 != lineText.indexOf("</" + tag + ">", pos)) // yep |
| 72 | { |
| 73 | found = false; |
| 74 | } |
| 75 | // we don't, so we have a candidate... |
| 76 | } |
| 77 | else |
| 78 | found = false; |
| 79 | |
| 80 | } |
| 81 | if (!found) |
| 82 | pos++; |
| 83 | } |
| 84 | |
| 85 | if (found) { |
| 86 | var startTag = "(\\<\\/" + tag + "\\>)|(\\<" + tag + "\\>)|(\\<" + tag + "\\s)|(\\<" + tag + "$)"; |
| 87 | var startTagRegExp = new RegExp(startTag, "g"); |
| 88 | var endTag = "</" + tag + ">"; |
| 89 | var depth = 1; |
| 90 | var l = line + 1; |
| 91 | var lastLine = cm.lineCount(); |
| 92 | while (l < lastLine) { |
| 93 | lineText = cm.getLine(l); |
| 94 | var match = lineText.match(startTagRegExp); |
| 95 | if (match) { |
| 96 | for (var i = 0; i < match.length; i++) { |
| 97 | if (match[i] == endTag) |
| 98 | depth--; |
| 99 | else |
| 100 | depth++; |
| 101 | if (!depth) { |
| 102 | if (hideEnd === true) l++; |
| 103 | return l; |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | l++; |
| 108 | } |
| 109 | return; |
| 110 | } |
| 111 | }; |
| 112 | |
| 113 | CodeMirror.braceRangeFinder = function(cm, line, hideEnd) { |
| 114 | var lineText = cm.getLine(line); |
| 115 | var startChar = lineText.lastIndexOf(" "); |
| 116 | if (startChar < 0 || lineText.lastIndexOf(" ") > startChar) return; |
| 117 | var tokenType = cm.getTokenAt({line: line, ch: startChar}).className; |
| 118 | var count = 1, lastLine = cm.lineCount(), end; |
| 119 | outer: for (var i = line + 1; i < lastLine; ++i) { |
| 120 | var text = cm.getLine(i), pos = 0; |
| 121 | for (;;) { |
| 122 | var nextOpen = text.indexOf("", pos), nextClose = text.indexOf("", pos); |
| 123 | if (nextOpen < 0) nextOpen = text.length; |
| 124 | if (nextClose < 0) nextClose = text.length; |
| 125 | pos = Math.min(nextOpen, nextClose); |
| 126 | if (pos == text.length) break; |
| 127 | if (cm.getTokenAt({line: i, ch: pos + 1}).className == tokenType) { |
| 128 | if (pos == nextOpen) ++count; |
| 129 | else if (!--count) { end = i; break outer; } |
| 130 | } |
| 131 | ++pos; |
| 132 | } |
| 133 | } |
| 134 | if (end == null || end == line + 1) return; |
| 135 | if (hideEnd === true) end++; |
| 136 | return end; |
| 137 | }; |
| 138 | |
| 139 | CodeMirror.braceRangeFinde = function(cm, line, hideEnd) { |
| 140 | var lineText = cm.getLine(line); |
| 141 | var startChar = lineText.lastIndexOf("{"); |
| 142 | if (startChar < 0 || lineText.lastIndexOf("}") > startChar) return; |
| 143 | var tokenType = cm.getTokenAt({line: line, ch: startChar}).className; |
| 144 | var count = 1, lastLine = cm.lineCount(), end; |
| 145 | outer: for (var i = line + 1; i < lastLine; ++i) { |
| 146 | var text = cm.getLine(i), pos = 0; |
| 147 | for (;;) { |
| 148 | var nextOpen = text.indexOf("{", pos), nextClose = text.indexOf("}", pos); |
| 149 | if (nextOpen < 0) nextOpen = text.length; |
| 150 | if (nextClose < 0) nextClose = text.length; |
| 151 | pos = Math.min(nextOpen, nextClose); |
| 152 | if (pos == text.length) break; |
| 153 | if (cm.getTokenAt({line: i, ch: pos + 1}).className == tokenType) { |
| 154 | if (pos == nextOpen) ++count; |
| 155 | else if (!--count) { end = i; break outer; } |
| 156 | } |
| 157 | ++pos; |
| 158 | } |
| 159 | } |
| 160 | if (end == null || end == line + 1) return; |
| 161 | if (hideEnd === true) end++; |
| 162 | return end; |
| 163 | }; |
| 164 | |
| 165 | CodeMirror.indentRangeFinder = function(cm, line) { |
| 166 | var tabSize = cm.getOption("tabSize"); |
| 167 | var myIndent = cm.getLineHandle(line).indentation(tabSize), last; |
| 168 | for (var i = line + 1, end = cm.lineCount(); i < end; ++i) { |
| 169 | var handle = cm.getLineHandle(i); |
| 170 | if (!/^\s*$/.test(handle.text)) { |
| 171 | if (handle.indentation(tabSize) <= myIndent) break; |
| 172 | last = i; |
| 173 | } |
| 174 | } |
| 175 | if (!last) return null; |
| 176 | return last + 1; |
| 177 | }; |
| 178 | |
| 179 | CodeMirror.newFoldFunction = function(rangeFinder, markText, hideEnd) { |
| 180 | var folded = []; |
| 181 | if (markText == null) markText = '<div style="position: absolute; left: 2px; color:#600">▼</div>%N%'; |
| 182 | |
| 183 | function isFolded(cm, n) { |
| 184 | for (var i = 0; i < folded.length; ++i) { |
| 185 | var start = cm.lineInfo(folded[i].start); |
| 186 | if (!start) folded.splice(i--, 1); |
| 187 | else if (start.line == n) return {pos: i, region: folded[i]}; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | function expand(cm, region) { |
| 192 | cm.clearMarker(region.start); |
| 193 | for (var i = 0; i < region.hidden.length; ++i) |
| 194 | cm.showLine(region.hidden[i]); |
| 195 | } |
| 196 | |
| 197 | return function(cm, line) { |
| 198 | cm.operation(function() { |
| 199 | var known = isFolded(cm, line); |
| 200 | if (known) { |
| 201 | folded.splice(known.pos, 1); |
| 202 | expand(cm, known.region); |
| 203 | } else { |
| 204 | var end = rangeFinder(cm, line, hideEnd); |
| 205 | if (end == null) return; |
| 206 | var hidden = []; |
| 207 | for (var i = line + 1; i < end; ++i) { |
| 208 | var handle = cm.hideLine(i); |
| 209 | if (handle) hidden.push(handle); |
| 210 | } |
| 211 | var first = cm.setMarker(line, markText); |
| 212 | var region = {start: first, hidden: hidden}; |
| 213 | cm.onDeleteLine(first, function() { expand(cm, region); }); |
| 214 | folded.push(region); |
| 215 | } |
| 216 | }); |
| 217 | }; |
| 218 | }; |