/**************************************************************************** ** ** ** Implementation of QDir class ** ** Created : 950427 ** ** 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 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" #include "qdir.h" #ifndef QT_NO_DIR #include "qfileinfo.h" #include "qfiledefs_p.h" #include "qregexp.h" #include "qstringlist.h" #include #include // NOT REVISED /*! \class QDir qdir.h \brief Traverses directory structures and contents in a platform-independent way. \ingroup io A QDir can point to a file using either a relative or an absolute file path. Absolute file paths begin with the directory separator ('/') or a drive specification (not applicable to UNIX). Relative file names begin with a directory name or a file name and specify a path relative to the current 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 if a QDir is using a relative or an absolute file path. You can call the function convertToAbs() to convert a relative QDir to an absolute one. The directory "example" under the current directory is checked for existence in the example below: \code QDir d( "example" ); // "./example" if ( !d.exists() ) qWarning( "Cannot find the example directory" ); \endcode If you always use '/' as a directory separator, Qt will translate your paths to conform to the underlying operating system. cd() and cdUp() can be used to navigate the directory tree. Note that the logical cd and cdUp operations are not performed if the new directory does not exist. Example: \code QDir d = QDir::root(); // "/" if ( !d.cd("tmp") ) { // "/tmp" qWarning( "Cannot find the \"/tmp\" directory" ); } else { QFile f( d.filePath("ex1.txt") ); // "/tmp/ex1.txt" if ( !f.open(IO_ReadWrite) ) qWarning( "Cannot create the file %s", f.name() ); } \endcode To read the contents of a directory you can use the entryList() and entryInfoList() functions. Example: \code #include #include // // This program scans the current directory and lists all files // that are not symbolic links, sorted by size with the smallest files // first. // int main( int argc, char **argv ) { QDir d; d.setFilter( QDir::Files | QDir::Hidden | QDir::NoSymLinks ); d.setSorting( QDir::Size | QDir::Reversed ); const QFileInfoList *list = d.entryInfoList(); QFileInfoListIterator it( *list ); // create list iterator QFileInfo *fi; // pointer for traversing printf( " BYTES FILENAME\n" ); // print header while ( (fi=it.current()) ) { // for each file... printf( "%10li %s\n", fi->size(), fi->fileName().data() ); ++it; // goto next list element } } \endcode */ /*! Constructs a QDir pointing to the current directory. \sa currentDirPath() */ QDir::QDir() { dPath = QString::fromLatin1("."); init(); } /*! Constructs a QDir. \arg \e path is the directory. \arg \e nameFilter is the file name filter. \arg \e sortSpec is the sort specification, which describes how to sort the files in the directory. \arg \e filterSpec is the filter specification, which describes how to filter the files in the directory. Most of these arguments (except \e path) have optional values. Example: \code // lists all files in /tmp QDir d( "/tmp" ); for ( int i=0; i= 0 || old == QString::fromLatin1(".") || dirName == QString::fromLatin1("..") ) dPath = cleanDirPath( dPath ); } if ( !exists() ) { dPath = old; // regret return FALSE; } dirty = TRUE; return TRUE; } /*! Changes directory by moving one directory up the path followed to arrive at the current directory. Returns TRUE if the new directory exists and is readable. Note that the logical cdUp() operation is not performed if the new directory does not exist. \sa cd(), isReadable(), exists(), path() */ bool QDir::cdUp() { return cd( QString::fromLatin1("..") ); } /*! \fn QString QDir::nameFilter() const Returns the string set by setNameFilter() \sa setNameFilter() */ /*! Sets the name filter used by entryList() and entryInfoList(). The name filter is a wildcarding filter that understands "*" and "?" wildcards, You may specify several filter entries separated by a " " or a ";". If you want entryList() and entryInfoList() to list all files ending with ".cpp" and all files ending with ".h", you simply call dir.setNameFilter("*.cpp *.h") or dir.setNameFilter("*.cpp;*.h") \sa nameFilter() */ void QDir::setNameFilter( const QString &nameFilter ) { nameFilt = nameFilter; if ( nameFilt.isEmpty() ) nameFilt = QString::fromLatin1("*"); dirty = TRUE; } /*! \fn QDir::FilterSpec QDir::filter() const Returns the value set by setFilter() \sa setFilter() */ /*! \enum QDir::FilterSpec This enum describes how QDir is to select what entries in a directory to return. The filter value is specified by or-ing together values from the following list:
  • \c Dirs - List directories only
  • \c Files - List files only
  • \c Drives - List disk drives (does nothing under unix)
  • \c NoSymLinks - Do not list symbolic links (where they exist)
  • \c Readable - List files for which the application has read access.
  • \c Writable - List files for which the application has write access.
  • \c Executable - List files for which the application has execute access
  • \c Modified - Only list files that have been modified (does nothing under unix)
  • \c Hidden - List hidden files (on unix, files starting with a .)
  • \c System - List system files (does nothing under unix)
If you do not set any of \c Readable, \c Writable or \c Executable, QDir will set all three of them. This makes the default easy to write and at the same time useful. Examples: \c Readable|Writable means list all files for which the application has read access, write access or both. \c Dirs|Drives means list drives, directories, all files that the application can read, write or execute, and also symlinks to such files/directories. */ /*! Sets the filter used by entryList() and entryInfoList(). The filter is used to specify the kind of files that should be returned by entryList() and entryInfoList(). \sa nameFilter() */ void QDir::setFilter( int filterSpec ) { if ( filtS == (FilterSpec) filterSpec ) return; filtS = (FilterSpec) filterSpec; dirty = TRUE; } /*! \fn QDir::SortSpec QDir::sorting() const Returns the value set by setSorting() \sa setSorting() */ /*! \enum QDir::SortSpec This enum describes how QDir is to sort entries in a directory when it returns a list of them. The sort value is specified by or-ing together values from the following list:
  • \c Name - sort by name
  • \c Time - sort by time (modification time)
  • \c Size - sort by file size
  • \c Unsorted - do not sort
  • \c DirsFirst - put all directories first in the list
  • \c Reversed - reverse the sort order
  • \c IgnoreCase - sort case-insensitively
You can only specify one of the first four. If you specify both \c DirsFirst and \c Reversed, directories are still put first but the list is otherwise reversed. */ // ### Unsorted+DirsFirst ? Unsorted+Reversed? /*! Sets the sorting order used by entryList() and entryInfoList(). The \e sortSpec is specified by or-ing values from the enum SortSpec. The different values are: One of these:
Name
Sort by name (alphabetical order).
Time
Sort by time (most recent first).
Size
Sort by size (largest first).
Unsorted
Use the operating system order (UNIX does NOT sort alphabetically). ORed with zero or more of these:
DirsFirst
Always put directory names first.
Reversed
Reverse sort order.
IgnoreCase
Ignore case when sorting by name.
*/ void QDir::setSorting( int sortSpec ) { if ( sortS == (SortSpec) sortSpec ) return; sortS = (SortSpec) sortSpec; dirty = TRUE; } /*! \fn bool QDir::matchAllDirs() const Returns the value set by setMatchAllDirs() \sa setMatchAllDirs() */ /*! If \e enable is TRUE, all directories will be listed (even if they do not match the filter or the name filter), otherwise only matched directories will be listed. \bug Currently, directories that do not match the filter will not be included (the name filter will be ignored as expected). \sa matchAllDirs() */ void QDir::setMatchAllDirs( bool enable ) { if ( (bool)allDirs == enable ) return; allDirs = enable; dirty = TRUE; } /*! Returns the number of files that was found. Equivalent to entryList().count(). \sa operator[](), entryList() */ uint QDir::count() const { return entryList().count(); } /*! Returns the file name at position \e index in the list of found file names. Equivalent to entryList().at(index). Returns null if the \e index is out of range or if the entryList() function failed. \sa count(), entryList() */ QString QDir::operator[]( int index ) const { entryList(); return fList && index >= 0 && index < (int)fList->count() ? (*fList)[index] : QString::null; } /*! This function is included to easy porting from Qt 1.x to Qt 2.0, it is the same as entryList(), but encodes the filenames as 8-bit strings using QFile::encodedName(). It is more efficient to use entryList(). */ QStrList QDir::encodedEntryList( int filterSpec, int sortSpec ) const { QStrList r; QStringList l = entryList(filterSpec,sortSpec); for ( QStringList::Iterator it = l.begin(); it != l.end(); ++it ) { r.append( QFile::encodeName(*it) ); } return r; } /*! This function is included to easy porting from Qt 1.x to Qt 2.0, it is the same as entryList(), but encodes the filenames as 8-bit strings using QFile::encodedName(). It is more efficient to use entryList(). */ QStrList QDir::encodedEntryList( const QString &nameFilter, int filterSpec, int sortSpec ) const { QStrList r; QStringList l = entryList(nameFilter,filterSpec,sortSpec); for ( QStringList::Iterator it = l.begin(); it != l.end(); ++it ) { r.append( QFile::encodeName(*it) ); } return r; } /*! Returns a list of the names of all files and directories in the directory indicated by the setSorting(), setFilter() and setNameFilter() specifications. The the filter and sorting specifications can be overridden using the \e filterSpec and \e sortSpec arguments. Returns an empty list if the directory is unreadable or does not exist. \sa entryInfoList(), setNameFilter(), setSorting(), setFilter(), encodedEntryList() */ QStringList QDir::entryList( int filterSpec, int sortSpec ) const { if ( !dirty && filterSpec == (int)DefaultFilter && sortSpec == (int)DefaultSort ) return *fList; return entryList( nameFilt, filterSpec, sortSpec ); } /*! Returns a list of the names of all files and directories in the directory indicated by the setSorting(), setFilter() and setNameFilter() specifications. The the filter and sorting specifications can be overridden using the \e nameFilter, \e filterSpec and \e sortSpec arguments. Returns and empty list if the directory is unreadable or does not exist. \sa entryInfoList(), setNameFilter(), setSorting(), setFilter(), encodedEntryList() */ QStringList QDir::entryList( const QString &nameFilter, int filterSpec, int sortSpec ) const { if ( filterSpec == (int)DefaultFilter ) filterSpec = filtS; if ( sortSpec == (int)DefaultSort ) sortSpec = sortS; QDir *that = (QDir*)this; // mutable function if ( that->readDirEntries(nameFilter, filterSpec, sortSpec) ) return *that->fList; else return QStringList(); } /*! Returns a list of QFileInfo objects for all files and directories in the directory pointed to using the setSorting(), setFilter() and setNameFilter() specifications. The the filter and sorting specifications can be overridden using the \e filterSpec and \e sortSpec arguments. Returns 0 if the directory is unreadable or does not exist. The returned pointer is a const pointer to a QFileInfoList. The list is owned by the QDir object and will be reused on the next call to entryInfoList() for the same QDir instance. If you want to keep the entries of the list after a subsequent call to this function you will need to copy them. \sa entryList(), setNameFilter(), setSorting(), setFilter() */ const QFileInfoList *QDir::entryInfoList( int filterSpec, int sortSpec ) const { if ( !dirty && filterSpec == (int)DefaultFilter && sortSpec == (int)DefaultSort ) return fiList; return entryInfoList( nameFilt, filterSpec, sortSpec ); } /*! Returns a list of QFileInfo objects for all files and directories in the directory pointed to using the setSorting(), setFilter() and setNameFilter() specifications. The the filter and sorting specifications can be overridden using the \e nameFilter, \e filterSpec and \e sortSpec arguments. Returns 0 if the directory is unreadable or does not exist. The returned pointer is a const pointer to a QFileInfoList. The list is owned by the QDir object and will be reused on the next call to entryInfoList() for the same QDir instance. If you want to keep the entries of the list after a subsequent call to this function you will need to copy them. \sa entryList(), setNameFilter(), setSorting(), setFilter() */ const QFileInfoList *QDir::entryInfoList( const QString &nameFilter, int filterSpec, int sortSpec ) const { if ( filterSpec == (int)DefaultFilter ) filterSpec = filtS; if ( sortSpec == (int)DefaultSort ) sortSpec = sortS; QDir *that = (QDir*)this; // mutable function if ( that->readDirEntries(nameFilter, filterSpec, sortSpec) ) return that->fiList; else return 0; } /*! Returns TRUE if the directory exists. (If a file with the same name is found this function will of course return FALSE). \sa QFileInfo::exists(), QFile::exists() */ bool QDir::exists() const { QFileInfo fi( dPath ); return fi.exists() && fi.isDir(); } /*! Returns TRUE if the directory path is relative to the current directory, FALSE if the path is absolute (e.g. under UNIX a path is relative if it does not start with a '/'). According to Einstein this function should always return TRUE. \sa convertToAbs() */ bool QDir::isRelative() const { return isRelativePath( dPath ); } /*! Converts the directory path to an absolute path. If it is already absolute nothing is done. \sa isRelative() */ void QDir::convertToAbs() { dPath = absPath(); } /*! Makes a copy of d and assigns it to this QDir. */ QDir &QDir::operator=( const QDir &d ) { dPath = d.dPath; delete fList; fList = 0; delete fiList; fiList = 0; nameFilt = d.nameFilt; dirty = TRUE; allDirs = d.allDirs; filtS = d.filtS; sortS = d.sortS; return *this; } /*! Sets the directory path to be the given path. */ QDir &QDir::operator=( const QString &path ) { dPath = cleanDirPath( path ); dirty = TRUE; return *this; } /*! \fn bool QDir::operator!=( const QDir &d ) const Returns TRUE if the \e d and this dir have different path or different sort/filter settings, otherwise FALSE. */ /*! Returns TRUE if the \e d and this dir have the same path and all sort and filter settings are equal, otherwise FALSE. */ bool QDir::operator==( const QDir &d ) const { return dPath == d.dPath && nameFilt == d.nameFilt && allDirs == d.allDirs && filtS == d.filtS && sortS == d.sortS; } /*! Removes a file. If \e acceptAbsPath is TRUE a path starting with a separator ('/') will remove the file with the absolute path, if \e acceptAbsPath is FALSE any number of separators at the beginning of \e fileName will be removed. Returns TRUE if successful, otherwise FALSE. */ bool QDir::remove( const QString &fileName, bool acceptAbsPath ) { if ( fileName.isEmpty() ) { #if defined(CHECK_NULL) qWarning( "QDir::remove: Empty or null file name" ); #endif return FALSE; } QString p = filePath( fileName, acceptAbsPath ); return QFile::remove( p ); } /*! Checks for existence of a file. If \e acceptAbsPaths is TRUE a path starting with a separator ('/') will check the file with the absolute path, if \e acceptAbsPath is FALSE any number of separators at the beginning of \e name will be removed. Returns TRUE if the file exists, otherwise FALSE. \sa QFileInfo::exists(), QFile::exists() */ bool QDir::exists( const QString &name, bool acceptAbsPath ) { if ( name.isEmpty() ) { #if defined(CHECK_NULL) qWarning( "QDir::exists: Empty or null file name" ); #endif return FALSE; } QString tmp = filePath( name, acceptAbsPath ); return QFile::exists( tmp ); } /*! Returns the native directory separator; '/' under UNIX and '\' under MS-DOS, Windows NT and OS/2. You do not need to use this function to build file paths. If you always use '/', Qt will translate your paths to conform to the underlying operating system. */ char QDir::separator() { #if defined(_OS_UNIX_) return '/'; #elif defined (_OS_FATFS_) return '\\'; #elif defined (_OS_MAC_) return ':'; #else return '/'; #endif } /*! Returns the current directory. \sa currentDirPath(), QDir::QDir() */ QDir QDir::current() { return QDir( currentDirPath() ); } /*! Returns the home directory. \sa homeDirPath() */ QDir QDir::home() { return QDir( homeDirPath() ); } /*! Returns the root directory. \sa rootDirPath() drives() */ QDir QDir::root() { return QDir( rootDirPath() ); } /*! \fn QString QDir::homeDirPath() Returns the absolute path for the user's home directory, \sa home() */ QStringList qt_makeFilterList( const QString &filter ) { if ( filter.isEmpty() ) return QStringList(); int i = filter.find( ' ', 0 ); QChar sep( ' ' ); if ( i == -1 ) { if ( filter.find( ';', 0 ) != -1 ) { sep = QChar( ';' ); i = filter.find( sep, 0 ); } } QStringList lst = QStringList::split( sep, filter ); QStringList lst2; QStringList::Iterator it = lst.begin(); for ( ; it != lst.end(); ++it ) { QString s = *it; if ( s[ (int)s.length() - 1 ] == ';' ) s.remove( s.length() - 1, 1 ); lst2 << s; } return lst2; } /*! Returns TRUE if the \e fileName matches one of the wildcards in the list \e filters. \sa QRegExp */ bool QDir::match( const QStringList &filters, const QString &fileName ) { QStringList::ConstIterator sit = filters.begin(); bool matched = FALSE; for ( ; sit != filters.end(); ++sit ) { QRegExp regexp( *sit, FALSE, TRUE ); if ( regexp.match( fileName ) != -1 ) { matched = TRUE; break; } } return matched; } /*! Returns TRUE if the \e fileName matches the wildcard \e filter. \a Filter may also contain multiple wildcards separated by spaces or semicolons. \sa QRegExp */ bool QDir::match( const QString &filter, const QString &fileName ) { QStringList lst = qt_makeFilterList( filter ); return match( lst, fileName ); } /*! Removes all multiple directory separators ('/') and resolves any "." or ".." found in the path. Symbolic links are kept. This function does not return the canonical path, but rather the most simplified version of the input. "../stuff" becomes "stuff", "stuff/../nonsense" becomes "nonsense" and "\\stuff\\more\\..\\nonsense" becomes "\\stuff\\nonsense". \sa absPath() canonicalPath() */ QString QDir::cleanDirPath( const QString &filePath ) { QString name = filePath; QString newPath; if ( name.isEmpty() ) return name; slashify( name ); bool addedSeparator; if ( isRelativePath(name) ) { addedSeparator = TRUE; name.insert( 0, '/' ); } else { addedSeparator = FALSE; } int ePos, pos, upLevel; pos = ePos = name.length(); upLevel = 0; int len; while ( pos && (pos = name.findRev('/',--pos)) != -1 ) { len = ePos - pos - 1; if ( len == 2 && name.at(pos + 1) == '.' && name.at(pos + 2) == '.' ) { upLevel++; } else { if ( len != 0 && (len != 1 || name.at(pos + 1) != '.') ) { if ( !upLevel ) newPath = QString::fromLatin1("/") + name.mid(pos + 1, len) + newPath; else upLevel--; } } ePos = pos; } if ( addedSeparator ) { while ( upLevel-- ) newPath.insert( 0, QString::fromLatin1("/..") ); if ( !newPath.isEmpty() ) newPath.remove( 0, 1 ); else newPath = QString::fromLatin1("."); } else { if ( newPath.isEmpty() ) newPath = QString::fromLatin1("/"); #if defined(_OS_FATFS_) || defined(_OS_OS2EMX_) if ( name[0] == '/' ) { if ( name[1] == '/' ) // "\\machine\x\ ..." newPath.insert( 0, '/' ); } else { newPath = name.left(2) + newPath; } #endif } return newPath; } int qt_cmp_si_sortSpec; #if defined(Q_C_CALLBACKS) extern "C" { #endif int qt_cmp_si( const void *n1, const void *n2 ) { if ( !n1 || !n2 ) return 0; QDirSortItem* f1 = (QDirSortItem*)n1; QDirSortItem* f2 = (QDirSortItem*)n2; if ( qt_cmp_si_sortSpec & QDir::DirsFirst ) if ( f1->item->isDir() != f2->item->isDir() ) return f1->item->isDir() ? -1 : 1; int r = 0; int sortBy = qt_cmp_si_sortSpec & QDir::SortByMask; switch ( sortBy ) { case QDir::Time: r = f1->item->lastModified().secsTo(f2->item->lastModified()); break; case QDir::Size: r = f2->item->size() - f1->item->size(); break; default: ; } if ( r == 0 && sortBy != QDir::Unsorted ) { // Still not sorted - sort by name bool ic = qt_cmp_si_sortSpec & QDir::IgnoreCase; if ( f1->filename_cache.isNull() ) f1->filename_cache = ic ? f1->item->fileName().lower() : f1->item->fileName(); if ( f2->filename_cache.isNull() ) f2->filename_cache = ic ? f2->item->fileName().lower() : f2->item->fileName(); r = f1->filename_cache.compare(f2->filename_cache); } if ( r == 0 ) { // Enforce an order - the order the items appear in the array r = (char*)n1 - (char*)n2; } if ( qt_cmp_si_sortSpec & QDir::Reversed ) return -r; else return r; } #if defined(Q_C_CALLBACKS) } #endif #endif // QT_NO_DIR