qurlinfo.cpp

奇趣公司比较新的qt/emd版本

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#include "qurlinfo.h"

#ifndef QT_NO_URLINFO

#include "qurl.h"
#include "qdir.h"
#include <limits.h>

class QUrlInfoPrivate
{
public:
    QUrlInfoPrivate() :
        permissions(0),
        size(0),
        isDir(false),
        isFile(true),
        isSymLink(false),
        isWritable(true),
        isReadable(true),
        isExecutable(false)
    {}

    QString name;
    int permissions;
    QString owner;
    QString group;
    qint64 size;

    QDateTime lastModified;
    QDateTime lastRead;
    bool isDir;
    bool isFile;
    bool isSymLink;
    bool isWritable;
    bool isReadable;
    bool isExecutable;
};


/*!
    \class QUrlInfo
    \brief The QUrlInfo class stores information about URLs.

    \ingroup io
    \ingroup misc

    The information about a URL that can be retrieved includes name(),
    permissions(), owner(), group(), size(), lastModified(),
    lastRead(), isDir(), isFile(), isSymLink(), isWritable(),
    isReadable() and isExecutable().

    You can create your own QUrlInfo objects passing in all the
    relevant information in the constructor, and you can modify a
    QUrlInfo; for each getter mentioned above there is an equivalent
    setter. Note that setting values does not affect the underlying
    resource that the QUrlInfo provides information about; for example
    if you call setWritable(true) on a read-only resource the only
    thing changed is the QUrlInfo object, not the resource.

    \sa QUrl, {FTP Example}
*/

/*!
    \enum QUrlInfo::PermissionSpec

    This enum is used by the permissions() function to report the
    permissions of a file.

    \value ReadOwner The file is readable by the owner of the file.
    \value WriteOwner The file is writable by the owner of the file.
    \value ExeOwner The file is executable by the owner of the file.
    \value ReadGroup The file is readable by the group.
    \value WriteGroup The file is writable by the group.
    \value ExeGroup The file is executable by the group.
    \value ReadOther The file is readable by anyone.
    \value WriteOther The file is writable by anyone.
    \value ExeOther The file is executable by anyone.
*/

/*!
    Constructs an invalid QUrlInfo object with default values.

    \sa isValid()
*/

QUrlInfo::QUrlInfo()
{
    d = 0;
}

/*!
    Copy constructor, copies \a ui to this URL info object.
*/

QUrlInfo::QUrlInfo(const QUrlInfo &ui)
{
    if (ui.d) {
        d = new QUrlInfoPrivate;
        *d = *ui.d;
    } else {
        d = 0;
    }
}

/*!
    Constructs a QUrlInfo object by specifying all the URL's
    information.

    The information that is passed is the \a name, file \a
    permissions, \a owner and \a group and the file's \a size. Also
    passed is the \a lastModified date/time and the \a lastRead
    date/time. Flags are also passed, specifically, \a isDir, \a
    isFile, \a isSymLink, \a isWritable, \a isReadable and \a
    isExecutable.
*/

QUrlInfo::QUrlInfo(const QString &name, int permissions, const QString &owner,
                    const QString &group, qint64 size, const QDateTime &lastModified,
                    const QDateTime &lastRead, bool isDir, bool isFile, bool isSymLink,
                    bool isWritable, bool isReadable, bool isExecutable)
{
    d = new QUrlInfoPrivate;
    d->name = name;
    d->permissions = permissions;
    d->owner = owner;
    d->group = group;
    d->size = size;
    d->lastModified = lastModified;
    d->lastRead = lastRead;
    d->isDir = isDir;
    d->isFile = isFile;
    d->isSymLink = isSymLink;
    d->isWritable = isWritable;
    d->isReadable = isReadable;
    d->isExecutable = isExecutable;
}


/*!
    Constructs a QUrlInfo object by specifying all the URL's
    information.

    The information that is passed is the \a url, file \a
    permissions, \a owner and \a group and the file's \a size. Also
    passed is the \a lastModified date/time and the \a lastRead
    date/time. Flags are also passed, specifically, \a isDir, \a
    isFile, \a isSymLink, \a isWritable, \a isReadable and \a
    isExecutable.
*/

QUrlInfo::QUrlInfo(const QUrl &url, int permissions, const QString &owner,
                    const QString &group, qint64 size, const QDateTime &lastModified,
                    const QDateTime &lastRead, bool isDir, bool isFile, bool isSymLink,
                    bool isWritable, bool isReadable, bool isExecutable)
{
    d = new QUrlInfoPrivate;
    d->name = QFileInfo(url.path()).fileName();
    d->permissions = permissions;
    d->owner = owner;
    d->group = group;
    d->size = size;
    d->lastModified = lastModified;
    d->lastRead = lastRead;
    d->isDir = isDir;
    d->isFile = isFile;
    d->isSymLink = isSymLink;
    d->isWritable = isWritable;
    d->isReadable = isReadable;
    d->isExecutable = isExecutable;
}


/*!
    Sets the name of the URL to \a name. The name is the full text,
    for example, "http://doc.trolltech.com/qurlinfo.html".

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setName(const QString &name)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->name = name;
}


/*!
    If \a b is true then the URL is set to be a directory; if \a b is
    false then the URL is set not to be a directory (which normally
    means it is a file). (Note that a URL can refer to both a file and
    a directory even though most file systems do not support this.)

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setDir(bool b)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->isDir = b;
}


/*!
    If \a b is true then the URL is set to be a file; if \b is false
    then the URL is set not to be a file (which normally means it is a
    directory). (Note that a URL can refer to both a file and a
    directory even though most file systems do not support this.)

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setFile(bool b)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->isFile = b;
}


/*!
    Specifies that the URL refers to a symbolic link if \a b is true
    and that it does not if \a b is false.

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setSymLink(bool b)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->isSymLink = b;
}


/*!
    Specifies that the URL is writable if \a b is true and not
    writable if \a b is false.

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setWritable(bool b)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->isWritable = b;
}


/*!
    Specifies that the URL is readable if \a b is true and not
    readable if \a b is false.

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setReadable(bool b)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->isReadable = b;
}

/*!
    Specifies that the owner of the URL is called \a s.

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setOwner(const QString &s)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->owner = s;
}

/*!
    Specifies that the owning group of the URL is called \a s.

    If you call this function for an invalid URL info, this function
    turns it into a valid one.

    \sa isValid()
*/

void QUrlInfo::setGroup(const QString &s)
{
    if (!d)
        d = new QUrlInfoPrivate;
    d->group = s;
}

/*!