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clickable.cpp
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20 
21 #include <QDesktopServices>
22 #include <QModelIndex>
23 #include <QUrl>
24 
25 #include "buffermodel.h"
26 #include "clickable.h"
27 #include "client.h"
28 
29 void Clickable::activate(NetworkId networkId, const QString &text) const
30 {
31  if (!isValid())
32  return;
33 
34  QString str = text.mid(start(), length());
35 
36  switch (type()) {
37  case Clickable::Url:
38  if (!str.contains("://"))
39  str = "http://" + str;
40  QDesktopServices::openUrl(QUrl::fromEncoded(str.toUtf8(), QUrl::TolerantMode));
41  break;
42  case Clickable::Channel:
43  Client::bufferModel()->switchToOrJoinBuffer(networkId, str);
44  break;
45  default:
46  break;
47  }
48 }
49 
50 
51 // NOTE: This method is not threadsafe and not reentrant!
52 // (RegExps are not constant while matching, and they are static here for efficiency)
54 {
55  // For matching URLs
56  static QString scheme("(?:(?:mailto:|(?:[+.-]?\\w)+://)|www(?=\\.\\S+\\.))");
57  static QString authority("(?:(?:[,.;@:]?[-\\w]+)+\\.?|\\[[0-9a-f:.]+\\])(?::\\d+)?");
58  static QString urlChars("(?:[,.;:]*[\\w~@/?&=+$()!%#*-])");
59  static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
60 
61  static QRegExp regExp[] = {
62  // URL
63  // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
64  QRegExp(QString("\\b(%1%2(?:/%3*)?)%4").arg(scheme, authority, urlChars, urlEnd), Qt::CaseInsensitive),
65 
66  // Channel name
67  // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
68  QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b", Qt::CaseInsensitive)
69 
70  // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
71  };
72 
73  static const int regExpCount = 2; // number of regexps in the array above
74 
75  qint16 matches[] = { 0, 0, 0 };
76  qint16 matchEnd[] = { 0, 0, 0 };
77 
78  ClickableList result;
79  //QString str = data(ChatLineModel::DisplayRole).toString();
80 
81  qint16 idx = 0;
82  qint16 minidx;
83  int type = -1;
84 
85  do {
86  type = -1;
87  minidx = str.length();
88  for (int i = 0; i < regExpCount; i++) {
89  if (matches[i] < 0 || matchEnd[i] > str.length()) continue;
90  if (idx >= matchEnd[i]) {
91  matches[i] = regExp[i].indexIn(str, qMax(matchEnd[i], idx));
92  if (matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
93  }
94  if (matches[i] >= 0 && matches[i] < minidx) {
95  minidx = matches[i];
96  type = i;
97  }
98  }
99  if (type >= 0) {
100  idx = matchEnd[type];
101  QString match = str.mid(matches[type], matchEnd[type] - matches[type]);
102  if (type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
103  if (!match.contains('(')) {
104  matchEnd[type]--;
105  match.chop(1);
106  }
107  }
108  if (type == Clickable::Channel) {
109  // don't make clickable if it could be a #number
110  if (QRegExp("^#\\d+$").exactMatch(match))
111  continue;
112  }
113  result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
114  }
115  }
116  while (type >= 0);
117  return result;
118 }
119 
120 
122 {
123  foreach(const Clickable &click, *this) {
124  if (idx >= click.start() && idx < click.start() + click.length())
125  return click;
126  }
127  return Clickable();
128 }