src/corelib/io/qfsfileengine_p.h

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  41
  42 #ifndef QFSFILEENGINE_P_H
  43 #define QFSFILEENGINE_P_H
  44
  45 //
  46 //  W A R N I N G
  47 //  -------------
  48 //
  49 // This file is not part of the Qt API.  It exists purely as an
  50 // implementation detail.  This header file may change from version to
  51 // version without notice, or even be removed.
  52 //
  53 // We mean it.
  54 //
  55
  56 #include "qplatformdefs.h"
  57 #include "QtCore/qfsfileengine.h"
  58 #include "private/qabstractfileengine_p.h"
  59 #include <qhash.h>
  60
  61 #ifndef QT_NO_FSFILEENGINE
  62
  63 QT_BEGIN_NAMESPACE
  64
  65 #if defined(Q_OS_WINCE_STD) && _WIN32_WCE < 0x600
  66 #define Q_USE_DEPRECATED_MAP_API 1
  67 #endif
  68
  69 class QFSFileEnginePrivate : public QAbstractFileEnginePrivate
  70 {
  71     Q_DECLARE_PUBLIC(QFSFileEngine)
  72
  73 public:
  74 #ifdef Q_WS_WIN
  75     static QString longFileName(const QString &path);
  76 #endif
  77     static QString canonicalized(const QString &path);
  78
  79     QString filePath;
  80     QByteArray nativeFilePath;
  81     QIODevice::OpenMode openMode;
  82
  83     void nativeInitFileName();
  84     bool nativeOpen(QIODevice::OpenMode openMode);
  85     bool openFh(QIODevice::OpenMode flags, FILE *fh);
  86     bool openFd(QIODevice::OpenMode flags, int fd);
  87     bool nativeClose();
  88     bool closeFdFh();
  89     bool nativeFlush();
  90     bool flushFh();
  91     qint64 nativeSize() const;
  92     qint64 sizeFdFh() const;
  93     qint64 nativePos() const;
  94     qint64 posFdFh() const;
  95     bool nativeSeek(qint64);
  96     bool seekFdFh(qint64);
  97     qint64 nativeRead(char *data, qint64 maxlen);
  98     qint64 readFdFh(char *data, qint64 maxlen);
  99     qint64 nativeReadLine(char *data, qint64 maxlen);
 100     qint64 readLineFdFh(char *data, qint64 maxlen);
 101     qint64 nativeWrite(const char *data, qint64 len);
 102     qint64 writeFdFh(const char *data, qint64 len);
 103     int nativeHandle() const;
 104     bool nativeIsSequential() const;
 105     bool isSequentialFdFh() const;
 106
 107     uchar *map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags);
 108     bool unmap(uchar *ptr);
 109
 110     FILE *fh;
 111 #ifdef Q_WS_WIN
 112     HANDLE fileHandle;
 113     QHash<uchar *, QPair<int /*offset*/, HANDLE /*handle*/> > maps;
 114     mutable int cachedFd;
 115     mutable DWORD fileAttrib;
 116 #else
 117     QHash<uchar *, QPair<int /*offset % PageSize*/, size_t /*length + offset % PageSize*/> > maps;
 118     mutable QT_STATBUF st;
 119 #endif
 120     int fd;
 121
 122 #ifdef Q_USE_DEPRECATED_MAP_API
 123     void mapHandleClose();
 124     HANDLE fileMapHandle;
 125 #endif
 126
 127     enum LastIOCommand
 128     {
 129         IOFlushCommand,
 130         IOReadCommand,
 131         IOWriteCommand
 132     };
 133     LastIOCommand  lastIOCommand;
 134     bool lastFlushFailed;
 135     bool closeFileHandle;
 136
 137     mutable uint is_sequential : 2;
 138     mutable uint could_stat : 1;
 139     mutable uint tried_stat : 1;
 140 #if !defined(Q_OS_WINCE)
 141     mutable uint need_lstat : 1;
 142     mutable uint is_link : 1;
 143 #endif
 144
 145     bool doStat() const;
 146     bool isSymlink() const;
 147
 148 #if defined(Q_OS_WIN32)
 149     int sysOpen(const QString &, int flags);
 150 #endif
 151
 152 #if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
 153     static void resolveLibs();
 154     static bool resolveUNCLibs();
 155     static bool uncListSharesOnServer(const QString &server, QStringList *list);
 156 #endif
 157
 158 protected:
 159     QFSFileEnginePrivate();
 160
 161     void init();
 162
 163 #if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
 164     QAbstractFileEngine::FileFlags getPermissions() const;
 165 #endif
 166 };
 167
 168 QT_END_NAMESPACE
 169
 170 #endif // QT_NO_FSFILEENGINE
 171
 172 #endif // QFSFILEENGINE_P_H