X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5949d30725e8af5b7938c86102b3e37da7caedd2..6f41c10973643552837c6bd38b23779e65a2eaa3:/include/wx/filesys.h diff --git a/include/wx/filesys.h b/include/wx/filesys.h index f24323363c..026fff1f28 100644 --- a/include/wx/filesys.h +++ b/include/wx/filesys.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: filesys.h +// Name: wx/filesys.h // Purpose: class for opening files - virtual file system // Author: Vaclav Slavik // Copyright: (c) 1999 Vaclav Slavik @@ -12,6 +12,8 @@ #include "wx/defs.h" +#if wxUSE_FILESYSTEM + #if !wxUSE_STREAMS #error You cannot compile virtual file systems without wxUSE_STREAMS #endif @@ -20,15 +22,14 @@ #error You cannot compile wxHTML without virtual file systems #endif -#if wxUSE_FILESYSTEM - #include "wx/stream.h" #include "wx/datetime.h" #include "wx/filename.h" +#include "wx/hashmap.h" -class WXDLLIMPEXP_BASE wxFSFile; -class WXDLLIMPEXP_BASE wxFileSystemHandler; -class WXDLLIMPEXP_BASE wxFileSystem; +class WXDLLIMPEXP_FWD_BASE wxFSFile; +class WXDLLIMPEXP_FWD_BASE wxFileSystemHandler; +class WXDLLIMPEXP_FWD_BASE wxFileSystem; //-------------------------------------------------------------------------------- // wxFSFile @@ -49,29 +50,43 @@ public: { m_Stream = stream; m_Location = loc; - m_MimeType = mimetype; m_MimeType.MakeLower(); + m_MimeType = mimetype.Lower(); m_Anchor = anchor; #if wxUSE_DATETIME m_Modif = modif; #endif // wxUSE_DATETIME } - virtual ~wxFSFile() { if (m_Stream) delete m_Stream; } + virtual ~wxFSFile() { delete m_Stream; } + + // returns stream. This doesn't give away ownership of the stream object. + wxInputStream *GetStream() const { return m_Stream; } + + // gives away the ownership of the current stream. + wxInputStream *DetachStream() + { + wxInputStream *stream = m_Stream; + m_Stream = NULL; + return stream; + } - // returns stream. This doesn't _create_ stream, it only returns - // pointer to it. - wxInputStream *GetStream() const {return m_Stream;} + // deletes the current stream and takes ownership of another. + void SetStream(wxInputStream *stream) + { + delete m_Stream; + m_Stream = stream; + } // returns file's mime type - const wxString& GetMimeType() const {return m_MimeType;} + const wxString& GetMimeType() const; // returns the original location (aka filename) of the file - const wxString& GetLocation() const {return m_Location;} + const wxString& GetLocation() const { return m_Location; } - const wxString& GetAnchor() const {return m_Anchor;} + const wxString& GetAnchor() const { return m_Anchor; } #if wxUSE_DATETIME - wxDateTime GetModificationTime() const {return m_Modif;} + wxDateTime GetModificationTime() const { return m_Modif; } #endif // wxUSE_DATETIME private: @@ -84,7 +99,7 @@ private: #endif // wxUSE_DATETIME DECLARE_ABSTRACT_CLASS(wxFSFile) - DECLARE_NO_COPY_CLASS(wxFSFile) + wxDECLARE_NO_COPY_CLASS(wxFSFile); }; @@ -117,28 +132,28 @@ public: virtual wxString FindFirst(const wxString& spec, int flags = 0); virtual wxString FindNext(); + // Returns MIME type of the file - w/o need to open it + // (default behaviour is that it returns type based on extension) + static wxString GetMimeTypeFromExt(const wxString& location); + protected: // returns protocol ("file", "http", "tar" etc.) The last (most right) // protocol is used: // {it returns "tar" for "file:subdir/archive.tar.gz#tar:/README.txt"} - wxString GetProtocol(const wxString& location) const; + static wxString GetProtocol(const wxString& location); // returns left part of address: // {it returns "file:subdir/archive.tar.gz" for "file:subdir/archive.tar.gz#tar:/README.txt"} - wxString GetLeftLocation(const wxString& location) const; + static wxString GetLeftLocation(const wxString& location); // returns anchor part of address: // {it returns "anchor" for "file:subdir/archive.tar.gz#tar:/README.txt#anchor"} // NOTE: anchor is NOT a part of GetLeftLocation()'s return value - wxString GetAnchor(const wxString& location) const; + static wxString GetAnchor(const wxString& location); // returns right part of address: // {it returns "/README.txt" for "file:subdir/archive.tar.gz#tar:/README.txt"} - wxString GetRightLocation(const wxString& location) const; - - // Returns MIME type of the file - w/o need to open it - // (default behaviour is that it returns type based on extension) - wxString GetMimeTypeFromExt(const wxString& location); + static wxString GetRightLocation(const wxString& location); DECLARE_ABSTRACT_CLASS(wxFileSystemHandler) }; @@ -152,11 +167,20 @@ protected: // kinds of files (HTPP, FTP, local, tar.gz etc..) //-------------------------------------------------------------------------------- +// Open Bit Flags +enum wxFileSystemOpenFlags +{ + wxFS_READ = 1, // Open for reading + wxFS_SEEKABLE = 4 // Returned stream will be seekable +}; + +WX_DECLARE_VOIDPTR_HASH_MAP_WITH_DECL(wxFileSystemHandler*, wxFSHandlerHash, class WXDLLIMPEXP_BASE); + class WXDLLIMPEXP_BASE wxFileSystem : public wxObject { public: wxFileSystem() : wxObject() { m_FindFileHandler = NULL;} - virtual ~wxFileSystem() { } + virtual ~wxFileSystem(); // sets the current location. Every call to OpenFile is // relative to this location. @@ -173,7 +197,7 @@ public: // It first tries to open the file in relative scope // (based on ChangePathTo()'s value) and then as an absolute // path. - wxFSFile* OpenFile(const wxString& location); + wxFSFile* OpenFile(const wxString& location, int flags = wxFS_READ); // Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting // the query to directories or wxFILE for files only or 0 for either. @@ -182,7 +206,8 @@ public: wxString FindNext(); // find a file in a list of directories, returns false if not found - bool FindFileInPath(wxString *pStr, const wxChar *path, const wxChar *file); + bool FindFileInPath(wxString *pStr, + const wxString& path, const wxString& file); // Adds FS handler. // In fact, this class is only front-end to the FS handlers :-) @@ -191,7 +216,6 @@ public: // Removes FS handler static wxFileSystemHandler* RemoveHandler(wxFileSystemHandler *handler); - // Returns true if there is a handler which can open the given location. static bool HasHandlerForPath(const wxString& location); @@ -206,6 +230,8 @@ public: protected: + wxFileSystemHandler *MakeLocal(wxFileSystemHandler *h); + wxString m_Path; // the path (location) we are currently in // this is path, not file! @@ -217,9 +243,11 @@ protected: // list of FS handlers wxFileSystemHandler *m_FindFileHandler; // handler that succeed in FindFirst query + wxFSHandlerHash m_LocalHandlers; + // Handlers local to this instance DECLARE_DYNAMIC_CLASS(wxFileSystem) - DECLARE_NO_COPY_CLASS(wxFileSystem) + wxDECLARE_NO_COPY_CLASS(wxFileSystem); }; @@ -265,7 +293,20 @@ protected: static wxString ms_root; }; +// Stream reading data from wxFSFile: this allows to use virtual files with any +// wx functions accepting streams. +class WXDLLIMPEXP_BASE wxFSInputStream : public wxWrapperInputStream +{ +public: + // Notice that wxFS_READ is implied in flags. + wxFSInputStream(const wxString& filename, int flags = 0); + virtual ~wxFSInputStream(); +private: + wxFSFile* m_file; + + wxDECLARE_NO_COPY_CLASS(wxFSInputStream); +}; #endif // wxUSE_FILESYSTEM