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