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diff --git a/qmake/tools/qfileinfo.cpp b/qmake/tools/qfileinfo.cpp new file mode 100644 index 0000000..3af7932 --- a/dev/null +++ b/qmake/tools/qfileinfo.cpp @@ -0,0 +1,659 @@ +/**************************************************************************** +** $Id$ +** +** Implementation of QFileInfo class +** +** Created : 950628 +** +** Copyright (C) 1992-2002 Trolltech AS. All rights reserved. +** +** This file is part of the tools module of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Trolltech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses may use this file in accordance with the Qt Commercial License +** Agreement provided with the Software. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** See http://www.trolltech.com/qpl/ for QPL licensing information. +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#include "qplatformdefs.h" + +#include "qfileinfo.h" +#include "qdatetime.h" +#include "qdir.h" +#include "qfiledefs_p.h" +#if defined(QT_LARGEFILE_SUPPORT) && !defined(QT_ABI_QT4) +#include <limits.h> +#endif + + +extern bool qt_file_access( const QString& fn, int t ); + +/*! + \class QFileInfo + \reentrant + \brief The QFileInfo class provides system-independent file information. + + \ingroup io + + QFileInfo provides information about a file's name and position + (path) in the file system, its access rights and whether it is a + directory or symbolic link, etc. The file's size and last + modified/read times are also available. + + A QFileInfo can point to a file with either a relative or an + absolute file path. Absolute file paths begin with the directory + separator "/" (or with a drive specification on Windows). Relative + file names begin with a directory name or a file name and specify + a path relative to the current working directory. An example of an + absolute path is the string "/tmp/quartz". A relative path might + look like "src/fatlib". You can use the function isRelative() to + check whether a QFileInfo is using a relative or an absolute file + path. You can call the function convertToAbs() to convert a + relative QFileInfo's path to an absolute path. + + The file that the QFileInfo works on is set in the constructor or + later with setFile(). Use exists() to see if the file exists and + size() to get its size. + + To speed up performance, QFileInfo caches information about the + file. Because files can be changed by other users or programs, or + even by other parts of the same program, there is a function that + refreshes the file information: refresh(). If you want to switch + off a QFileInfo's caching and force it to access the file system + every time you request information from it call setCaching(FALSE). + + The file's type is obtained with isFile(), isDir() and + isSymLink(). The readLink() function provides the name of the file + the symlink points to. + + Elements of the file's name can be extracted with dirPath() and + fileName(). The fileName()'s parts can be extracted with + baseName() and extension(). + + The file's dates are returned by created(), lastModified() and + lastRead(). Information about the file's access permissions is + obtained with isReadable(), isWritable() and isExecutable(). The + file's ownership is available from owner(), ownerId(), group() and + groupId(). You can examine a file's permissions and ownership in a + single statement using the permission() function. + + If you need to read and traverse directories, see the QDir class. +*/ + +/*! + \enum QFileInfo::PermissionSpec + + This enum is used by the permission() function to report the + permissions and ownership of a file. The values may be OR-ed + together to test multiple permissions and ownership values. + + \value ReadUser The file is readable by the user. + \value WriteUser The file is writable by the user. + \value ExeUser The file is executable by the user. + \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 a new empty QFileInfo. +*/ + +QFileInfo::QFileInfo() +{ + fic = 0; + cache = TRUE; +#if defined(Q_OS_UNIX) + symLink = FALSE; +#endif +} + +/*! + Constructs a new QFileInfo that gives information about the given + file. The \a file can also include an absolute or relative path. + + \sa setFile(), isRelative(), QDir::setCurrent(), QDir::isRelativePath() +*/ + +QFileInfo::QFileInfo( const QString &file ) +{ + fn = file; + slashify( fn ); + fic = 0; + cache = TRUE; +#if defined(Q_OS_UNIX) + symLink = FALSE; +#endif +} + +/*! + Constructs a new QFileInfo that gives information about file \a + file. + + If the \a file has a relative path, the QFileInfo will also have a + relative path. + + \sa isRelative() +*/ + +QFileInfo::QFileInfo( const QFile &file ) +{ + fn = file.name(); + slashify( fn ); + fic = 0; + cache = TRUE; +#if defined(Q_OS_UNIX) + symLink = FALSE; +#endif +} + +/*! + Constructs a new QFileInfo that gives information about the file + called \a fileName in the directory \a d. + + If \a d has a relative path, the QFileInfo will also have a + relative path. + + \sa isRelative() +*/ +#ifndef QT_NO_DIR +QFileInfo::QFileInfo( const QDir &d, const QString &fileName ) +{ + fn = d.filePath( fileName ); + slashify( fn ); + fic = 0; + cache = TRUE; +#if defined(Q_OS_UNIX) + symLink = FALSE; +#endif +} +#endif +/*! + Constructs a new QFileInfo that is a copy of \a fi. +*/ + +QFileInfo::QFileInfo( const QFileInfo &fi ) +{ + fn = fi.fn; + if ( fi.fic ) { + fic = new QFileInfoCache; + *fic = *fi.fic; + } else { + fic = 0; + } + cache = fi.cache; +#if defined(Q_OS_UNIX) + symLink = fi.symLink; +#endif +} + +/*! + Destroys the QFileInfo and frees its resources. +*/ + +QFileInfo::~QFileInfo() +{ + delete fic; +} + + +/*! + Makes a copy of \a fi and assigns it to this QFileInfo. +*/ + +QFileInfo &QFileInfo::operator=( const QFileInfo &fi ) +{ + fn = fi.fn; + if ( !fi.fic ) { + delete fic; + fic = 0; + } else { + if ( !fic ) { + fic = new QFileInfoCache; + Q_CHECK_PTR( fic ); + } + *fic = *fi.fic; + } + cache = fi.cache; +#if defined(Q_OS_UNIX) + symLink = fi.symLink; +#endif + return *this; +} + + +/*! + Sets the file that the QFileInfo provides information about to \a + file. + + The \a file can also include an absolute or relative file path. + Absolute paths begin with the directory separator (e.g. "/" under + Unix) or a drive specification (under Windows). Relative file + names begin with a directory name or a file name and specify a + path relative to the current directory. + + Example: + \code + QString absolute = "/local/bin"; + QString relative = "local/bin"; + QFileInfo absFile( absolute ); + QFileInfo relFile( relative ); + + QDir::setCurrent( QDir::rootDirPath() ); + // absFile and relFile now point to the same file + + QDir::setCurrent( "/tmp" ); + // absFile now points to "/local/bin", + // while relFile points to "/tmp/local/bin" + \endcode + + \sa isRelative(), QDir::setCurrent(), QDir::isRelativePath() +*/ + +void QFileInfo::setFile( const QString &file ) +{ + fn = file; + slashify( fn ); + delete fic; + fic = 0; +} + +/*! + \overload + + Sets the file that the QFileInfo provides information about to \a + file. + + If \a file includes a relative path, the QFileInfo will also have + a relative path. + + \sa isRelative() +*/ + +void QFileInfo::setFile( const QFile &file ) +{ + fn = file.name(); + slashify( fn ); + delete fic; + fic = 0; +} + +/*! + \overload + + Sets the file that the QFileInfo provides information about to \a + fileName in directory \a d. + + If \a fileName includes a relative path, the QFileInfo will also + have a relative path. + + \sa isRelative() +*/ +#ifndef QT_NO_DIR +void QFileInfo::setFile( const QDir &d, const QString &fileName ) +{ + fn = d.filePath( fileName ); + slashify( fn ); + delete fic; + fic = 0; +} +#endif + +/*! + Returns TRUE if the file exists; otherwise returns FALSE. +*/ + +bool QFileInfo::exists() const +{ + return qt_file_access( fn, F_OK ); +} + +/*! + Refreshes the information about the file, i.e. reads in information + from the file system the next time a cached property is fetched. + + \sa setCaching() +*/ + +void QFileInfo::refresh() const +{ + QFileInfo *that = (QFileInfo*)this; // Mutable function + delete that->fic; + that->fic = 0; +} + +/*! + \fn bool QFileInfo::caching() const + + Returns TRUE if caching is enabled; otherwise returns FALSE. + + \sa setCaching(), refresh() +*/ + +/*! + If \a enable is TRUE, enables caching of file information. If \a + enable is FALSE caching is disabled. + + When caching is enabled, QFileInfo reads the file information from + the file system the first time it's needed, but generally not + later. + + Caching is enabled by default. + + \sa refresh(), caching() +*/ + +void QFileInfo::setCaching( bool enable ) +{ + if ( cache == enable ) + return; + cache = enable; + if ( cache ) { + delete fic; + fic = 0; + } +} + + +/*! + Returns the file name, including the path (which may be absolute + or relative). + + \sa isRelative(), absFilePath() +*/ + +QString QFileInfo::filePath() const +{ + return fn; +} + +/*! + Returns the base name of the file. + + If \a complete is FALSE (the default) the base name consists of + all characters in the file name up to (but not including) the \e + first '.' character. + + If \a complete is TRUE the base name consists of all characters in + the file up to (but not including) the \e last '.' character. + + The path is not included in either case. + + Example: + \code + QFileInfo fi( "/tmp/archive.tar.gz" ); + QString base = fi.baseName(); // base = "archive" + base = fi.baseName( TRUE ); // base = "archive.tar" + \endcode + + \sa fileName(), extension() +*/ + +QString QFileInfo::baseName( bool complete ) const +{ + QString tmp = fileName(); + int pos = complete ? tmp.findRev( '.' ) : tmp.find( '.' ); + if ( pos == -1 ) + return tmp; + else + return tmp.left( pos ); +} + +/*! + Returns the file's extension name. + + If \a complete is TRUE (the default), extension() returns the + string of all characters in the file name after (but not + including) the first '.' character. + + If \a complete is FALSE, extension() returns the string of all + characters in the file name after (but not including) the last '.' + character. + + Example: + \code + QFileInfo fi( "/tmp/archive.tar.gz" ); + QString ext = fi.extension(); // ext = "tar.gz" + ext = fi.extension( FALSE ); // ext = "gz" + \endcode + + \sa fileName(), baseName() +*/ + +QString QFileInfo::extension( bool complete ) const +{ + QString s = fileName(); + int pos = complete ? s.find( '.' ) : s.findRev( '.' ); + if ( pos < 0 ) + return QString::fromLatin1( "" ); + else + return s.right( s.length() - pos - 1 ); +} + +/*! + Returns the file's path as a QDir object. + + If the QFileInfo is relative and \a absPath is FALSE, the QDir + will be relative; otherwise it will be absolute. + + \sa dirPath(), filePath(), fileName(), isRelative() +*/ +#ifndef QT_NO_DIR +QDir QFileInfo::dir( bool absPath ) const +{ + return QDir( dirPath(absPath) ); +} +#endif + + +/*! + Returns TRUE if the file is readable; otherwise returns FALSE. + + \sa isWritable(), isExecutable(), permission() +*/ + +bool QFileInfo::isReadable() const +{ + return qt_file_access( fn, R_OK ) && permission( ReadUser ); +} + +/*! + Returns TRUE if the file is writable; otherwise returns FALSE. + + \sa isReadable(), isExecutable(), permission() +*/ + +bool QFileInfo::isWritable() const +{ + return qt_file_access( fn, W_OK ) && permission( WriteUser ); +} + +/*! + Returns TRUE if the file is executable; otherwise returns FALSE. + + \sa isReadable(), isWritable(), permission() +*/ + +bool QFileInfo::isExecutable() const +{ + return qt_file_access( fn, X_OK ) && permission( ExeUser ); +} + +#ifndef Q_WS_WIN +bool QFileInfo::isHidden() const +{ + return fileName()[ 0 ] == QChar( '.' ); +} +#endif + +/*! + Returns TRUE if the file path name is relative. Returns FALSE if + the path is absolute (e.g. under Unix a path is absolute if it + begins with a "/"). +*/ +#ifndef QT_NO_DIR +bool QFileInfo::isRelative() const +{ + return QDir::isRelativePath( fn ); +} + +/*! + Converts the file's path to an absolute path. + + If it is already absolute, nothing is done. + + \sa filePath(), isRelative() +*/ + +bool QFileInfo::convertToAbs() +{ + if ( isRelative() ) + fn = absFilePath(); + return QDir::isRelativePath( fn ); +} +#endif + +/*! + Returns the file size in bytes, or 0 if the file does not exist or + if the size is 0 or if the size cannot be fetched. +*/ +#if defined(QT_ABI_QT4) +QIODevice::Offset QFileInfo::size() const +#else +uint QFileInfo::size() const +#endif +{ + if ( !fic || !cache ) + doStat(); + if ( fic ) +#if defined(QT_ABI_QT4) + return (QIODevice::Offset)fic->st.st_size; +#elif defined(QT_LARGEFILE_SUPPORT) + return (uint)fic->st.st_size > UINT_MAX ? UINT_MAX : (uint)fic->st.st_size; +#else + return (uint)fic->st.st_size; +#endif + else + return 0; +} + +/*! + Returns the date and time when the file was created. + + On platforms where this information is not available, returns the + same as lastModified(). + + \sa created() lastModified() lastRead() +*/ + +QDateTime QFileInfo::created() const +{ + QDateTime dt; + if ( !fic || !cache ) + doStat(); + if ( fic && fic->st.st_ctime != 0 ) { + dt.setTime_t( fic->st.st_ctime ); + return dt; + } else { + return lastModified(); + } +} + +/*! + Returns the date and time when the file was last modified. + + \sa created() lastModified() lastRead() +*/ + +QDateTime QFileInfo::lastModified() const +{ + QDateTime dt; + if ( !fic || !cache ) + doStat(); + if ( fic ) + dt.setTime_t( fic->st.st_mtime ); + return dt; +} + +/*! + Returns the date and time when the file was last read (accessed). + + On platforms where this information is not available, returns the + same as lastModified(). + + \sa created() lastModified() lastRead() +*/ + +QDateTime QFileInfo::lastRead() const +{ + QDateTime dt; + if ( !fic || !cache ) + doStat(); + if ( fic && fic->st.st_atime != 0 ) { + dt.setTime_t( fic->st.st_atime ); + return dt; + } else { + return lastModified(); + } +} + +#ifndef QT_NO_DIR + +/*! + Returns the absolute path including the file name. + + The absolute path name consists of the full path and the file + name. On Unix this will always begin with the root, '/', + directory. On Windows this will always begin 'D:/' where D is a + drive letter, except for network shares that are not mapped to a + drive letter, in which case the path will begin '//sharename/'. + + This function returns the same as filePath(), unless isRelative() + is TRUE. + + This function can be time consuming under Unix (in the order of + milliseconds). + + \sa isRelative(), filePath() +*/ +QString QFileInfo::absFilePath() const +{ + QString tmp; + if ( QDir::isRelativePath(fn) +#if defined(Q_OS_WIN32) || defined(Q_OS_WIN64) + && fn[1] != ':' +#endif + ) { + tmp = QDir::currentDirPath(); + tmp += '/'; + } + tmp += fn; + makeAbs( tmp ); + return QDir::cleanDirPath( tmp ); +} + +#endif |