The Tor Browser: comparison browser/devtools/sourceeditor/codemirror/search/searchcursor.js

comparison: browser/devtools/sourceeditor/codemirror/search/searchcursor.js

browser/devtools/sourceeditor/codemirror/search/searchcursor.js

branch: TOR_BUG_9701
changeset 15: b8a032363ba2

equal deleted inserted replaced

--1:000000000000
+:5b655866ebb6
+(function(mod) {
+if (typeof exports == "object" && typeof module == "object") // CommonJS
+mod(require("../../lib/codemirror"));
+else if (typeof define == "function" && define.amd) // AMD
+define(["../../lib/codemirror"], mod);
+else // Plain browser env
+mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+var Pos = CodeMirror.Pos;
+function SearchCursor(doc, query, pos, caseFold) {
+this.atOccurrence = false; this.doc = doc;
+if (caseFold == null && typeof query == "string") caseFold = false;
+pos = pos ? doc.clipPos(pos) : Pos(0, 0);
+this.pos = {from: pos, to: pos};
+// The matches method is filled in based on the type of query.
+// It takes a position and a direction, and returns an object
+// describing the next occurrence of the query, or null if no
+// more matches were found.
+if (typeof query != "string") { // Regexp match
+if (!query.global) query = new RegExp(query.source, query.ignoreCase ? "ig" : "g");
+this.matches = function(reverse, pos) {
+if (reverse) {
+query.lastIndex = 0;
+var line = doc.getLine(pos.line).slice(0, pos.ch), cutOff = 0, match, start;
+for (;;) {
+query.lastIndex = cutOff;
+var newMatch = query.exec(line);
+if (!newMatch) break;
+match = newMatch;
+start = match.index;
+cutOff = match.index + (match[0].length || 1);
+if (cutOff == line.length) break;
+}
+var matchLen = (match && match[0].length) || 0;
+if (!matchLen) {
+if (start == 0 && line.length == 0) {match = undefined;}
+else if (start != doc.getLine(pos.line).length) {
+matchLen++;
+}
+}
+} else {
+query.lastIndex = pos.ch;
+var line = doc.getLine(pos.line), match = query.exec(line);
+var matchLen = (match && match[0].length) || 0;
+var start = match && match.index;
+if (start + matchLen != line.length && !matchLen) matchLen = 1;
+}
+if (match && matchLen)
+return {from: Pos(pos.line, start),
+to: Pos(pos.line, start + matchLen),
+match: match};
+};
+} else { // String query
+var origQuery = query;
+if (caseFold) query = query.toLowerCase();
+var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;};
+var target = query.split("\n");
+// Different methods for single-line and multi-line queries
+if (target.length == 1) {
+if (!query.length) {
+// Empty string would match anything and never progress, so
+// we define it to match nothing instead.
+this.matches = function() {};
+} else {
+this.matches = function(reverse, pos) {
+if (reverse) {
+var orig = doc.getLine(pos.line).slice(0, pos.ch), line = fold(orig);
+var match = line.lastIndexOf(query);
+if (match > -1) {
+match = adjustPos(orig, line, match);
+return {from: Pos(pos.line, match), to: Pos(pos.line, match + origQuery.length)};
+}
+} else {
+var orig = doc.getLine(pos.line).slice(pos.ch), line = fold(orig);
+var match = line.indexOf(query);
+if (match > -1) {
+match = adjustPos(orig, line, match) + pos.ch;
+return {from: Pos(pos.line, match), to: Pos(pos.line, match + origQuery.length)};
+}
+}
+};
+}
+} else {
+var origTarget = origQuery.split("\n");
+this.matches = function(reverse, pos) {
+var last = target.length - 1;
+if (reverse) {
+if (pos.line - (target.length - 1) < doc.firstLine()) return;
+if (fold(doc.getLine(pos.line).slice(0, origTarget[last].length)) != target[target.length - 1]) return;
+var to = Pos(pos.line, origTarget[last].length);
+for (var ln = pos.line - 1, i = last - 1; i >= 1; --i, --ln)
+if (target[i] != fold(doc.getLine(ln))) return;
+var line = doc.getLine(ln), cut = line.length - origTarget[0].length;
+if (fold(line.slice(cut)) != target[0]) return;
+return {from: Pos(ln, cut), to: to};
+} else {
+if (pos.line + (target.length - 1) > doc.lastLine()) return;
+var line = doc.getLine(pos.line), cut = line.length - origTarget[0].length;
+if (fold(line.slice(cut)) != target[0]) return;
+var from = Pos(pos.line, cut);
+for (var ln = pos.line + 1, i = 1; i < last; ++i, ++ln)
+if (target[i] != fold(doc.getLine(ln))) return;
+if (doc.getLine(ln).slice(0, origTarget[last].length) != target[last]) return;
+return {from: from, to: Pos(ln, origTarget[last].length)};
+}
+};
+}
+}
+}
+SearchCursor.prototype = {
+findNext: function() {return this.find(false);},
+findPrevious: function() {return this.find(true);},
+find: function(reverse) {
+var self = this, pos = this.doc.clipPos(reverse ? this.pos.from : this.pos.to);
+function savePosAndFail(line) {
+var pos = Pos(line, 0);
+self.pos = {from: pos, to: pos};
+self.atOccurrence = false;
+return false;
+}
+for (;;) {
+if (this.pos = this.matches(reverse, pos)) {
+this.atOccurrence = true;
+return this.pos.match || true;
+}
+if (reverse) {
+if (!pos.line) return savePosAndFail(0);
+pos = Pos(pos.line-1, this.doc.getLine(pos.line-1).length);
+}
+else {
+var maxLine = this.doc.lineCount();
+if (pos.line == maxLine - 1) return savePosAndFail(maxLine);
+pos = Pos(pos.line + 1, 0);
+}
+}
+},
+from: function() {if (this.atOccurrence) return this.pos.from;},
+to: function() {if (this.atOccurrence) return this.pos.to;},
+replace: function(newText) {
+if (!this.atOccurrence) return;
+var lines = CodeMirror.splitLines(newText);
+this.doc.replaceRange(lines, this.pos.from, this.pos.to);
+this.pos.to = Pos(this.pos.from.line + lines.length - 1,
+lines[lines.length - 1].length + (lines.length == 1 ? this.pos.from.ch : 0));
+}
+};
+// Maps a position in a case-folded line back to a position in the original line
+// (compensating for codepoints increasing in number during folding)
+function adjustPos(orig, folded, pos) {
+if (orig.length == folded.length) return pos;
+for (var pos1 = Math.min(pos, orig.length);;) {
+var len1 = orig.slice(0, pos1).toLowerCase().length;
+if (len1 < pos) ++pos1;
+else if (len1 > pos) --pos1;
+else return pos1;
+}
+}
+CodeMirror.defineExtension("getSearchCursor", function(query, pos, caseFold) {
+return new SearchCursor(this.doc, query, pos, caseFold);
+});
+CodeMirror.defineDocExtension("getSearchCursor", function(query, pos, caseFold) {
+return new SearchCursor(this, query, pos, caseFold);
+});
+CodeMirror.defineExtension("selectMatches", function(query, caseFold) {
+var ranges = [], next;
+var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold);
+while (next = cur.findNext()) {
+if (CodeMirror.cmpPos(cur.to(), this.getCursor("to")) > 0) break;
+ranges.push({anchor: cur.from(), head: cur.to()});
+}
+if (ranges.length)
+this.setSelections(ranges, 0);
+});
+});