Current Dev State

static/js/ketcher2/node_modules/jschardet/src/charsetgroupprober.js

@@ -0,0 +1,118 @@
+/*
+ * The Original Code is Mozilla Universal charset detector code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2001
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   António Afonso (antonio.afonso gmail.com) - port to JavaScript
+ *   Mark Pilgrim - port to Python
+ *   Shy Shalom - original C code
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301  USA
+ */
+
+!function(jschardet) {
+
+jschardet.CharSetGroupProber = function() {
+    jschardet.CharSetProber.apply(this);
+
+    var self = this;
+
+    function init() {
+        self._mActiveNum = 0;
+        self._mProbers = [];
+        self._mBestGuessProber = null;
+    }
+
+    this.reset = function() {
+        jschardet.CharSetGroupProber.prototype.reset.apply(this);
+        this._mActiveNum = 0;
+        for( var i = 0, prober; prober = this._mProbers[i]; i++ ) {
+            if( prober ) {
+                prober.reset();
+                prober.active = true;
+                this._mActiveNum++;
+            }
+        }
+        this._mBestGuessProber = null;
+    }
+
+    this.getCharsetName = function() {
+        if( !this._mBestGuessProber ) {
+            this.getConfidence();
+            if( !this._mBestGuessProber ) return null;
+        }
+        return this._mBestGuessProber.getCharsetName();
+    }
+
+    this.feed = function(aBuf) {
+        for( var i = 0, prober; prober = this._mProbers[i]; i++ ) {
+            if( !prober || !prober.active ) continue;
+            var st = prober.feed(aBuf);
+            if( !st ) continue;
+            if( st == jschardet.Constants.foundIt ) {
+                this._mBestGuessProber = prober;
+                return this.getState();
+            } else if( st == jschardet.Constants.notMe ) {
+                prober.active = false;
+                this._mActiveNum--;
+                if( this._mActiveNum <= 0 ) {
+                    this._mState = jschardet.Constants.notMe;
+                    return this.getState();
+                }
+            }
+        }
+        return this.getState();
+    }
+
+    this.getConfidence = function() {
+        var st = this.getState();
+        if( st == jschardet.Constants.foundIt ) {
+            return 0.99;
+        } else if( st == jschardet.Constants.notMe ) {
+            return 0.01;
+        }
+        var bestConf = 0.0;
+        this._mBestGuessProber = null;
+        for( var i = 0, prober; prober = this._mProbers[i]; i++ ) {
+            if( !prober ) continue;
+            if( !prober.active ) {
+                if( jschardet.Constants._debug ) {
+                    jschardet.log(prober.getCharsetName() + " not active\n");
+                }
+                continue;
+            }
+            var cf = prober.getConfidence();
+            if( jschardet.Constants._debug ) {
+                jschardet.log(prober.getCharsetName() + " confidence = " + cf + "\n");
+            }
+            if( bestConf < cf ) {
+                bestConf = cf;
+                this._mBestGuessProber = prober;
+            }
+        }
+        if( !this._mBestGuessProber ) return 0.0;
+        return bestConf;
+    }
+
+    init();
+}
+jschardet.CharSetGroupProber.prototype = new jschardet.CharSetProber();
+
+}(require('./init'));