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path: root/qmake/tools/qfileinfo_unix.cpp
authorkergoth <kergoth>2002-11-01 00:10:42 (UTC)
committer kergoth <kergoth>2002-11-01 00:10:42 (UTC)
commit5042e3cf0d3514552769e441f5aad590c8eaf967 (patch) (side-by-side diff)
tree4a5ea45f3519d981a172ab5275bf38c6fa778dec /qmake/tools/qfileinfo_unix.cpp
parent108c1c753e74e989cc13923086996791428c9af4 (diff)
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Adding qmake in preperation for new build system
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+/****************************************************************************
+** $Id$
+**
+** 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 for Unix/X11 or for Qt/Embedded 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 "qfiledefs_p.h"
+#include "qdatetime.h"
+#include "qdir.h"
+
+#include <limits.h>
+
+
+void QFileInfo::slashify( QString& )
+{
+ return;
+}
+
+
+void QFileInfo::makeAbs( QString & )
+{
+ return;
+}
+
+/*!
+ Returns TRUE if this object points to a file. Returns FALSE if the
+ object points to something which isn't a file, e.g. a directory or
+ a symlink.
+
+ \sa isDir(), isSymLink()
+*/
+bool QFileInfo::isFile() const
+{
+ if ( !fic || !cache )
+ doStat();
+ return fic ? (fic->st.st_mode & S_IFMT) == S_IFREG : FALSE;
+}
+
+/*!
+ Returns TRUE if this object points to a directory or to a symbolic
+ link to a directory; otherwise returns FALSE.
+
+ \sa isFile(), isSymLink()
+*/
+bool QFileInfo::isDir() const
+{
+ if ( !fic || !cache )
+ doStat();
+ return fic ? (fic->st.st_mode & S_IFMT) == S_IFDIR : FALSE;
+}
+
+/*!
+ Returns TRUE if this object points to a symbolic link (or to a
+ shortcut on Windows); otherwise returns FALSE.
+
+ \sa isFile(), isDir(), readLink()
+*/
+
+bool QFileInfo::isSymLink() const
+{
+ if ( !fic || !cache )
+ doStat();
+ return symLink;
+}
+
+/*!
+ Returns the name a symlink (or shortcut on Windows) points to, or
+ a QString::null if the object isn't a symbolic link.
+
+ This name may not represent an existing file; it is only a string.
+ QFileInfo::exists() returns TRUE if the symlink points to an
+ existing file.
+
+ \sa exists(), isSymLink(), isDir(), isFile()
+*/
+
+QString QFileInfo::readLink() const
+{
+ QString r;
+
+#if defined(Q_OS_UNIX) && !defined(Q_OS_OS2EMX)
+ char s[PATH_MAX+1];
+ if ( !isSymLink() )
+ return QString();
+ int len = readlink( QFile::encodeName(fn).data(), s, PATH_MAX );
+ if ( len >= 0 ) {
+ s[len] = '\0';
+ r = QFile::decodeName(s);
+ }
+#endif
+
+ return r;
+}
+
+static const uint nobodyID = (uint) -2;
+
+/*!
+ Returns the owner of the file. On Windows, on systems where files
+ do not have owners, or if an error occurs, QString::null is
+ returned.
+
+ This function can be time consuming under Unix (in the order of
+ milliseconds).
+
+ \sa ownerId(), group(), groupId()
+*/
+
+QString QFileInfo::owner() const
+{
+ passwd *pw = getpwuid( ownerId() );
+ if ( pw )
+ return QFile::decodeName( pw->pw_name );
+ return QString::null;
+}
+
+/*!
+ Returns the id of the owner of the file.
+
+ On Windows and on systems where files do not have owners this
+ function returns ((uint) -2).
+
+ \sa owner(), group(), groupId()
+*/
+
+uint QFileInfo::ownerId() const
+{
+ if ( !fic || !cache )
+ doStat();
+ if ( fic )
+ return fic->st.st_uid;
+ return nobodyID;
+}
+
+/*!
+ Returns the group of the file. On Windows, on systems where files
+ do not have groups, or if an error occurs, QString::null is
+ returned.
+
+ This function can be time consuming under Unix (in the order of
+ milliseconds).
+
+ \sa groupId(), owner(), ownerId()
+*/
+
+QString QFileInfo::group() const
+{
+ struct group *gr = getgrgid( groupId() );
+ if ( gr )
+ return QFile::decodeName( gr->gr_name );
+ return QString::null;
+}
+
+/*!
+ Returns the id of the group the file belongs to.
+
+ On Windows and on systems where files do not have groups this
+ function always returns (uint) -2.
+
+ \sa group(), owner(), ownerId()
+*/
+
+uint QFileInfo::groupId() const
+{
+ if ( !fic || !cache )
+ doStat();
+ if ( fic )
+ return fic->st.st_gid;
+ return nobodyID;
+}
+
+
+/*!
+ Tests for file permissions. The \a permissionSpec argument can be
+ several flags of type \c PermissionSpec OR-ed together to check
+ for permission combinations.
+
+ On systems where files do not have permissions this function
+ always returns TRUE.
+
+ Example:
+ \code
+ QFileInfo fi( "/tmp/archive.tar.gz" );
+ if ( fi.permission( QFileInfo::WriteUser | QFileInfo::ReadGroup ) )
+ qWarning( "I can change the file; my group can read the file.");
+ if ( fi.permission( QFileInfo::WriteGroup | QFileInfo::WriteOther ) )
+ qWarning( "The group or others can change the file!" );
+ \endcode
+
+ \sa isReadable(), isWritable(), isExecutable()
+*/
+
+bool QFileInfo::permission( int permissionSpec ) const
+{
+ if ( !fic || !cache )
+ doStat();
+ if ( fic ) {
+ uint mask = 0;
+ if ( permissionSpec & ReadUser )
+ mask |= S_IRUSR;
+ if ( permissionSpec & WriteUser )
+ mask |= S_IWUSR;
+ if ( permissionSpec & ExeUser )
+ mask |= S_IXUSR;
+ if ( permissionSpec & ReadGroup )
+ mask |= S_IRGRP;
+ if ( permissionSpec & WriteGroup )
+ mask |= S_IWGRP;
+ if ( permissionSpec & ExeGroup )
+ mask |= S_IXGRP;
+ if ( permissionSpec & ReadOther )
+ mask |= S_IROTH;
+ if ( permissionSpec & WriteOther )
+ mask |= S_IWOTH;
+ if ( permissionSpec & ExeOther )
+ mask |= S_IXOTH;
+ if ( mask ) {
+ return (fic->st.st_mode & mask) == mask;
+ } else {
+#if defined(QT_CHECK_NULL)
+ qWarning( "QFileInfo::permission: permissionSpec is 0" );
+#endif
+ return TRUE;
+ }
+ } else {
+ return FALSE;
+ }
+}
+
+void QFileInfo::doStat() const
+{
+ QFileInfo *that = ((QFileInfo*)this); // mutable function
+ if ( !that->fic )
+ that->fic = new QFileInfoCache;
+ that->symLink = FALSE;
+ struct stat *b = &that->fic->st;
+#if defined(Q_OS_UNIX) && defined(S_IFLNK)
+ if ( ::lstat( QFile::encodeName(fn), b ) == 0 ) {
+ if ( S_ISLNK( b->st_mode ) )
+ that->symLink = TRUE;
+ else
+ return;
+ }
+#endif
+
+ int r = ::stat( QFile::encodeName(fn), b );
+ if ( r != 0 && !that->symLink ) {
+ delete that->fic;
+ that->fic = 0;
+ }
+}
+
+/*!
+ Returns the file's path.
+
+ If \a absPath is TRUE an absolute path is returned.
+
+ \sa dir(), filePath(), fileName(), isRelative()
+*/
+#ifndef QT_NO_DIR
+QString QFileInfo::dirPath( bool absPath ) const
+{
+ QString s;
+ if ( absPath )
+ s = absFilePath();
+ else
+ s = fn;
+ int pos = s.findRev( '/' );
+ if ( pos == -1 ) {
+ return QString::fromLatin1( "." );
+ } else {
+ if ( pos == 0 )
+ return QString::fromLatin1( "/" );
+ return s.left( pos );
+ }
+}
+#endif
+
+/*!
+ Returns the name of the file, excluding the path.
+
+ Example:
+ \code
+ QFileInfo fi( "/tmp/archive.tar.gz" );
+ QString name = fi.fileName(); // name = "archive.tar.gz"
+ \endcode
+
+ \sa isRelative(), filePath(), baseName(), extension()
+*/
+
+QString QFileInfo::fileName() const
+{
+ int p = fn.findRev( '/' );
+ if ( p == -1 ) {
+ return fn;
+ } else {
+ return fn.mid( p + 1 );
+ }
+}