1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.internal.util;
18
19import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
20
21
22/**
23 * Delegate used to provide new implementation of a select few methods of {@link XmlUtils}
24 *
25 * Through the layoutlib_create tool, the original  methods of XmlUtils have been replaced
26 * by calls to methods of the same name in this delegate class.
27 *
28 */
29public class XmlUtils_Delegate {
30
31    @LayoutlibDelegate
32    /*package*/ static final int convertValueToInt(CharSequence charSeq, int defaultValue) {
33        if (null == charSeq)
34            return defaultValue;
35
36        String nm = charSeq.toString();
37
38        // This code is copied from the original implementation. The issue is that
39        // The Dalvik libraries are able to handle Integer.parse("XXXXXXXX", 16) where XXXXXXX
40        // is > 80000000 but the Java VM cannot.
41
42        int sign = 1;
43        int index = 0;
44        int len = nm.length();
45        int base = 10;
46
47        if ('-' == nm.charAt(0)) {
48            sign = -1;
49            index++;
50        }
51
52        if ('0' == nm.charAt(index)) {
53            //  Quick check for a zero by itself
54            if (index == (len - 1))
55                return 0;
56
57            char c = nm.charAt(index + 1);
58
59            if ('x' == c || 'X' == c) {
60                index += 2;
61                base = 16;
62            } else {
63                index++;
64                base = 8;
65            }
66        }
67        else if ('#' == nm.charAt(index)) {
68            index++;
69            base = 16;
70        }
71
72        return ((int)Long.parseLong(nm.substring(index), base)) * sign;
73    }
74}
75