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File: FrontEndScripts/libs/codemirror/addon/search/searchcursor.js

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  Classes of Aleksey Nemiro   PHP Small Server Administrator   FrontEndScripts/libs/codemirror/addon/search/searchcursor.js   Download  
File: FrontEndScripts/libs/codemirror/addon/search/searchcursor.js
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Class: PHP Small Server Administrator
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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: http://codemirror.net/LICENSE (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 (fold(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, origin) { if (!this.atOccurrence) return; var lines = CodeMirror.splitLines(newText); this.doc.replaceRange(lines, this.pos.from, this.pos.to, origin); 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 = []; var cur = this.getSearchCursor(query, this.getCursor("from"), caseFold); while (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); }); });