#include <QFile.h>
Inheritance diagram for FX::QFile:
Not much to say about this - it works as you'd expect. It's also thread-safe so multiple threads can read and write from it (though the current file pointer is the same for both, so it probably doesn't help you much).
Most likely you'll prefer to use FX::QMemMap all the time as it offers superior performance and facilities in most cases. Indeed, QFile does no internal buffering as it is expected it will only be used rarely, mostly for small files with little i/o performed to them.
Like all file type i/o classes, QFile can perform automatic CR/LF translation as well as UTF-8 to UTF-16 and UTF-32 conversion. If you enable IO_Translate, the file data is probed and its unicode type determined such that the file unicode type is transparently converted into UTF-8 and back into its original form. This allows your code to work exclusively in UTF-8 using the standard FX::FXString functions. You can set the type of output using setUnicodeTranslation().
For speed, QFile maintains its own record of file length which it manages. This normally isn't a problem, but when multiple QFile's are working on the same file (either in-process or across processes) then the internal count can become desynchronised with the actual length. If you want to reset the length, call reloadSize().
One major difference is default security, especially on NT. QFile like all TnFOX sets very conservative permissions on all things it creates - see FX::FXACL::default_(). Note that until the file is opened, permissions() returns what will be applied to the file on open() rather than the file itself - if you want the latter, use the static method.
Definition at line 76 of file QFile.h.
Public Types | |
| typedef FXfval | Offset |
| Default | |
| Unix | |
| MacOS | |
| MSDOS | |
| NoTranslation | |
| UTF8 | |
| UTF16 | |
| UTF16LE | |
| UTF32 | |
| UTF32LE | |
| enum | CRLFType { Default, Unix, MacOS, MSDOS } |
| enum | UnicodeType { NoTranslation, UTF8, UTF16, UTF16LE, UTF32, UTF32LE } |
Public Member Functions | |
| QFile () | |
| QFile (const FXString &name) | |
| ~QFile () | |
| const FXString & | name () const |
| void | setName (const FXString &name) |
| bool | exists () const |
| bool | remove () |
| FXfval | reloadSize () |
| virtual bool | open (FXuint mode) |
| virtual void | close () |
| virtual void | flush () |
| virtual FXfval | size () const |
| virtual void | truncate (FXfval size) |
| virtual FXfval | at () const |
| virtual bool | at (FXfval newpos) |
| virtual bool | atEnd () const |
| virtual const FXACL & | permissions () const |
| virtual void | setPermissions (const FXACL &perms) |
| virtual FXuval | readBlock (char *data, FXuval maxlen) |
| virtual FXuval | writeBlock (const char *data, FXuval maxlen) |
| virtual FXuval | readBlockFrom (char *data, FXuval maxlen, FXfval pos) |
| virtual FXuval | writeBlockTo (FXfval pos, const char *data, FXuval maxlen) |
| virtual int | ungetch (int c) |
| FXuint | flags () const |
| FXuint | mode () const |
| FXuint | state () const |
| CRLFType | crlfFormat () const |
| void | setCRLFFormat (CRLFType type) |
| UnicodeType | unicodeTranslation () const |
| void | setUnicodeTranslation (UnicodeType type) |
| bool | isBuffered () const |
| bool | isRaw () const |
| bool | isTranslated () const |
| bool | isUTF16Translated () const |
| bool | isUTF32Translated () const |
| bool | isReadable () const |
| bool | isWriteable () const |
| bool | isWritable () const |
| bool | isReadWrite () const |
| bool | isClosed () const |
| bool | isInactive () const |
| bool | isOpen () const |
| virtual bool | isSynchronous () const |
| FXuval | readBlock (FXuchar *data, FXuval maxlen) |
| FXuval | writeBlock (const FXuchar *data, FXuval maxlen) |
| virtual FXuval | readLine (char *data, FXuval maxlen) |
| FXuval | readBlockFrom (FXuchar *data, FXuval maxlen, FXfval pos) |
| FXuval | writeBlockTo (FXfval pos, const FXuchar *data, FXuval maxlen) |
| virtual int | getch () |
| virtual int | putch (int c) |
| FXfval | shredData (FXfval offset, FXfval len=(FXfval)-1) |
Static Public Member Functions | |
| static QIODevice & | stdio (bool applyCRLFTranslation=false) |
| static FXACL | permissions (const FXString &path) |
| static void | setPermissions (const FXString &path, const FXACL &perms) |
| static UnicodeType | determineUnicodeType (FXuchar *data, FXuval len) throw () |
| static FXuval | applyCRLF (FXuchar *FXRESTRICT output, const FXuchar *FXRESTRICT input, FXuval outputlen, FXuval &inputlen, CRLFType crlftype=Default, UnicodeType utftype=NoTranslation) |
| static FXuval | removeCRLF (FXuchar *FXRESTRICT output, const FXuchar *FXRESTRICT input, FXuval outputlen, FXuval &inputlen, UnicodeType utftype=NoTranslation) |
Protected Member Functions | |
| void | setFlags (int f) |
| void | setMode (int m) |
| void | setState (int s) |
Protected Attributes | |
| FXfval | ioIndex |
Friends | |
| class | QMemMap |
| class | FXProcess |
| FXAPI FXStream & | operator<< (FXStream &s, QIODevice &i) |
| FXAPI FXStream & | operator>> (FXStream &s, QIODevice &i) |
v1.4.7