1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "content/content_detector.h"
27#include "PlatformString.h"
28
29#define NAVIGATION_MAX_PHONE_LENGTH 14
30
31struct FindState {
32    int mStartResult;
33    int mEndResult;
34    char* mPattern;
35    UChar mStore[NAVIGATION_MAX_PHONE_LENGTH + 1];
36    UChar* mStorePtr;
37    UChar mBackOne;
38    UChar mBackTwo;
39    UChar mCurrent;
40    bool mOpenParen;
41    bool mInitialized;
42    bool mContinuationNode;
43};
44
45enum FoundState {
46    FOUND_NONE,
47    FOUND_PARTIAL,
48    FOUND_COMPLETE
49};
50
51// Searches for phone numbers (US only) or email addresses based off of the navcache code
52class PhoneEmailDetector : public ContentDetector {
53public:
54    PhoneEmailDetector();
55    virtual ~PhoneEmailDetector() {}
56
57private:
58    // Implementation of ContentDetector.
59    virtual bool FindContent(const string16::const_iterator& begin,
60                             const string16::const_iterator& end,
61                             size_t* start_pos,
62                             size_t* end_pos);
63
64    virtual std::string GetContentText(const WebKit::WebRange& range);
65    virtual GURL GetIntentURL(const std::string& content_text);
66    virtual size_t GetMaximumContentLength() {
67        return NAVIGATION_MAX_PHONE_LENGTH * 4;
68    }
69    virtual bool IsEnabled(const WebKit::WebHitTestInfo& hit_test) OVERRIDE;
70
71    DISALLOW_COPY_AND_ASSIGN(PhoneEmailDetector);
72
73    FindState m_findState;
74    FoundState m_foundResult;
75    const char* m_prefix;
76    // TODO: This shouldn't be done like this. PhoneEmailDetector should be
77    // refactored into two pieces and follow the IsEnabled style. This will
78    // only work because we always call IsEnabled before FindContent
79    bool m_isPhoneDetectionEnabled;
80    bool m_isEmailDetectionEnabled;
81};
82