summaryrefslogtreecommitdiffstats
path: root/src/corelib/doc/snippets/code/src_corelib_io_qurl.cpp
blob: 62ecc58a80a97dffaf7846ea5b2252faf2b0d2a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

//! [0]
QUrl url("http://www.example.com/List of holidays.xml");
// url.toEncoded() == "http://www.example.com/List%20of%20holidays.xml"
//! [0]


//! [1]
QUrl url = QUrl::fromEncoded("http://qt-project.org/List%20of%20holidays.xml");
//! [1]


//! [2]
bool checkUrl(const QUrl &url) {
    if (!url.isValid()) {
        qDebug("Invalid URL: %s", qUtf8Printable(url.toString()));
        return false;
    }

    return true;
}
//! [2]


//! [3]
QTcpSocket sock;
sock.connectToHost(url.host(), url.port(80));
//! [3]


//! [4]
http://www.example.com/cgi-bin/drawgraph.cgi?type(pie)color(green)
//! [4]


//! [5]
QUrl baseUrl("http://qt.digia.com/Support/");
QUrl relativeUrl("../Product/Library/");
qDebug(baseUrl.resolved(relativeUrl).toString());
// prints "http://qt.digia.com/Product/Library/"
//! [5]


//! [6]
QByteArray ba = QUrl::toPercentEncoding("{a fishy string?}", "{}", "s");
qDebug(ba.constData());
// prints "{a fi%73hy %73tring%3F}"
//! [6]

//! [7]
QUrl url("http://qt-project.org/support/file.html");
// url.adjusted(RemoveFilename) == "http://qt-project.org/support/"
// url.fileName() == "file.html"
//! [7]

//! [8]
    qDebug() << QUrl("main.qml").isRelative();          // true: no scheme
    qDebug() << QUrl("qml/main.qml").isRelative();      // true: no scheme
    qDebug() << QUrl("file:main.qml").isRelative();     // false: has "file" scheme
    qDebug() << QUrl("file:qml/main.qml").isRelative(); // false: has "file" scheme
//! [8]

//! [9]
    // Absolute URL, relative path
    QUrl url("file:file.txt");
    qDebug() << url.isRelative();                 // false: has "file" scheme
    qDebug() << QDir::isAbsolutePath(url.path()); // false: relative path

    // Relative URL, absolute path
    url = QUrl("/home/user/file.txt");
    qDebug() << url.isRelative();                 // true: has no scheme
    qDebug() << QDir::isAbsolutePath(url.path()); // true: absolute path
//! [9]

//! [10]
    QUrl original("http://example.com/?q=a%2B%3Db%26c");
    QUrl copy(original);
    copy.setQuery(copy.query(QUrl::FullyDecoded), QUrl::DecodedMode);

    qDebug() << original.toString();   // prints: http://example.com/?q=a%2B%3Db%26c
    qDebug() << copy.toString();       // prints: http://example.com/?q=a+=b&c
//! [10]

//! [11]
    QUrl url;
    url.setScheme("ftp");
//! [11]

//! [12]
    qDebug() << QUrl("file:file.txt").path();                   // "file.txt"
    qDebug() << QUrl("/home/user/file.txt").path();             // "/home/user/file.txt"
    qDebug() << QUrl("http://www.example.com/test/123").path(); // "/test/123"
//! [12]

//! [13]
    qDebug() << QUrl("/foo%FFbar").path();
//! [13]

//! [14]
    qDebug() << QUrl("/foo+bar%2B").path(); // "/foo+bar+"
//! [14]

//! [15]
    const QUrl url("/tmp/Mambo %235%3F.mp3");
    qDebug() << url.path(QUrl::FullyDecoded);  // "/tmp/Mambo #5?.mp3"
    qDebug() << url.path(QUrl::PrettyDecoded); // "/tmp/Mambo #5?.mp3"
    qDebug() << url.path(QUrl::FullyEncoded);  // "/tmp/Mambo%20%235%3F.mp3"
//! [15]

//! [16]
    qDebug() << QUrl::fromLocalFile("file.txt");            // QUrl("file:file.txt")
    qDebug() << QUrl::fromLocalFile("/home/user/file.txt"); // QUrl("file:///home/user/file.txt")
    qDebug() << QUrl::fromLocalFile("file:file.txt");       // doesn't make sense; expects path, not url with scheme
//! [16]

//! [17]
    QUrl url = QUrl::fromLocalFile("file.txt");
    QUrl baseUrl = QUrl("file:/home/user/");
    // wrong: prints QUrl("file:file.txt"), as url already has a scheme
    qDebug() << baseUrl.resolved(url);
//! [17]

//! [18]
    // correct: prints QUrl("file:///home/user/file.txt")
    url.setScheme(QString());
    qDebug() << baseUrl.resolved(url);
//! [18]

//! [19]
    QUrl url = QUrl("file.txt");
    QUrl baseUrl = QUrl("file:/home/user/");
    // prints QUrl("file:///home/user/file.txt")
    qDebug() << baseUrl.resolved(url);
//! [19]

//! [20]
    qDebug() << QUrl("file:file.txt").toLocalFile();            // "file.txt"
    qDebug() << QUrl("file:/home/user/file.txt").toLocalFile(); // "/home/user/file.txt"
    qDebug() << QUrl("file.txt").toLocalFile();                 // ""; wasn't a local file as it had no scheme
//! [20]