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Diffstat (limited to 'qtools/qfileinfo_unix.cpp')
| -rw-r--r-- | qtools/qfileinfo_unix.cpp | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/qtools/qfileinfo_unix.cpp b/qtools/qfileinfo_unix.cpp new file mode 100644 index 0000000..5a8fe04 --- /dev/null +++ b/qtools/qfileinfo_unix.cpp @@ -0,0 +1,425 @@ +/**************************************************************************** +** +** +** Implementation of QFileInfo class +** +** Created : 950628 +** +** Copyright (C) 1992-2000 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 "qglobal.h" + +#if defined(_OS_SUN_) +#define readlink _qt_hide_readlink +#endif + +#include <pwd.h> +#include <grp.h> + +#include "qfileinfo.h" +#include "qfiledefs_p.h" +#include "qdatetime.h" +#include "qdir.h" + +#if defined(_OS_SUN_) +#undef readlink +extern "C" int readlink( const char *, void *, uint ); +#endif + + +void QFileInfo::slashify( QString& ) +{ + return; +} + + +void QFileInfo::makeAbs( QString & ) +{ + return; +} + +extern bool qt_file_access( const QString& fn, int t ); + +/*! + Returns TRUE if we are pointing to a real file. + \sa isDir(), isSymLink() +*/ +bool QFileInfo::isFile() const +{ + if ( !fic || !cache ) + doStat(); + return fic ? (fic->st.st_mode & STAT_MASK) == STAT_REG : FALSE; +} + +/*! + Returns TRUE if we are pointing to a directory or a symbolic link to + a directory. + \sa isFile(), isSymLink() +*/ + +bool QFileInfo::isDir() const +{ + if ( !fic || !cache ) + doStat(); + return fic ? (fic->st.st_mode & STAT_MASK) == STAT_DIR : FALSE; +} + +/*! + Returns TRUE if we are pointing to a symbolic link. + \sa isFile(), isDir(), readLink() +*/ + +bool QFileInfo::isSymLink() const +{ + if ( !fic || !cache ) + doStat(); + return fic ? fic->isSymLink : FALSE; +} + + +/*! + Returns the name a symlink points to, or a null QString if the + object does not refer to 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(_OS_UNIX_) && !defined(_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 systems where files do not have owners this function returns 0. + + Note that this function can be time-consuming under UNIX. (in the order + of milliseconds on a 486 DX2/66 running Linux). + + \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 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 the file belongs to. + + On systems where files do not have groups this function always + returns 0. + + Note that this function can be time-consuming under UNIX (in the order of + milliseconds on a 486 DX2/66 running Linux). + + \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 systems where files do not have groups this function always + returns ((uind) -2). + + \sa group(), owner(), ownerId() +*/ + +uint QFileInfo::groupId() const +{ + if ( !fic || !cache ) + doStat(); + if ( fic ) + return fic->st.st_gid; + return nobodyID; +} + + +/*! + \fn bool QFileInfo::permission( int permissionSpec ) const + + Tests for file permissions. The \e permissionSpec argument can be several + flags of type 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/tonsils" ); + if ( fi.permission( QFileInfo::WriteUser | QFileInfo::ReadGroup ) ) + qWarning( "Tonsils can be changed by me, and the group can read them."); + if ( fi.permission( QFileInfo::WriteGroup | QFileInfo::WriteOther ) ) + qWarning( "Danger! Tonsils can be changed by the group or others!" ); + \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(CHECK_NULL) + qWarning( "QFileInfo::permission: permissionSpec is 0" ); +#endif + return TRUE; + } + } else { + return FALSE; + } +} + +/*! + Returns the file size in bytes, or 0 if the file does not exist if the size + cannot be fetched. +*/ + +uint QFileInfo::size() const +{ + if ( !fic || !cache ) + doStat(); + if ( fic ) + return (uint)fic->st.st_size; + else + return 0; +} + + +/*! + Returns the date and time when the file was last modified. + \sa 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 systems that do not support last read times, the modification time is + returned. + + \sa lastModified() +*/ + +QDateTime QFileInfo::lastRead() const +{ + QDateTime dt; + if ( !fic || !cache ) + doStat(); + if ( fic ) + dt.setTime_t( fic->st.st_atime ); + return dt; +} + + +void QFileInfo::doStat() const +{ + QFileInfo *that = ((QFileInfo*)this); // mutable function + if ( !that->fic ) + that->fic = new QFileInfoCache; + STATBUF *b = &that->fic->st; + that->fic->isSymLink = FALSE; + +#if defined(_OS_UNIX_) && defined(S_IFLNK) + if ( ::lstat(QFile::encodeName(fn),b) == 0 ) { + if ( S_ISLNK( b->st_mode ) ) + that->fic->isSymLink = TRUE; + else + return; + } +#endif + int r; + + r = STAT( QFile::encodeName(fn), b ); + + if ( r != 0 ) { + delete that->fic; + that->fic = 0; + } +} + +/*! + Returns the directory path of the file. + + If \e absPath is TRUE an absolute path is always 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, the file path is not included. + + Example: + \code + QFileInfo fi( "/tmp/abdomen.lower" ); + QString name = fi.fileName(); // name = "abdomen.lower" + \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); + } +} + +/*! + Returns the absolute path name. + + The absolute path name is the file name including the absolute path. If + the QFileInfo is absolute (i.e. not relative) this function will return + the same string as filePath(). + + Note that this function can be time-consuming under UNIX. (in the order + of milliseconds on a 486 DX2/66 running Linux). + + \sa isRelative(), filePath() +*/ +#ifndef QT_NO_DIR +QString QFileInfo::absFilePath() const +{ + if ( QDir::isRelativePath(fn) ) { + QString tmp = QDir::currentDirPath(); + tmp += '/'; + tmp += fn; + makeAbs( tmp ); + return QDir::cleanDirPath( tmp ); + } else { + QString tmp = fn; + makeAbs( tmp ); + return QDir::cleanDirPath( tmp ); + } + +} +#endif |