// (file is fully loaded in memory) and which understands CR/LF
// differences between platforms.
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 03.04.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
-#ifndef _TEXTFILE_H
-#define _TEXTFILE_H
+#ifndef _WX_TEXTFILE_H
+#define _WX_TEXTFILE_H
#ifdef __GNUG__
-#pragma interface "textfile.h"
+ #pragma interface "textfile.h"
#endif
#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// NB: this is always defined, even if !wxUSE_TEXTFILE
+
+// the line termination type
+enum wxTextFileType
+{
+ wxTextFileType_None, // incomplete (the last line of the file only)
+ wxTextFileType_Unix, // line is terminated with 'LF' = 0xA = 10 = '\n'
+ wxTextFileType_Dos, // 'CR' 'LF'
+ wxTextFileType_Mac, // 'CR' = 0xD = 13 = '\r'
+ wxTextFileType_Os2 // 'CR' 'LF'
+};
+
+#if wxUSE_TEXTFILE
+
#include "wx/string.h"
#include "wx/file.h"
#include "wx/dynarray.h"
// ----------------------------------------------------------------------------
// wxTextFile
// ----------------------------------------------------------------------------
-class wxTextFile
+
+WX_DEFINE_EXPORTED_ARRAY(wxTextFileType, ArrayFileType);
+
+class WXDLLEXPORT wxTextFile
{
public:
- // constants
- enum Type
- {
- Type_None, // incomplete (the last line of the file only)
- Type_Unix, // line is terminated with 'CR' = 0xA = 10 = '\n'
- Type_Dos, // 'LF' 'CR'
- Type_Mac // 'LF' = 0xD = 12 = '\r'
- };
-
- // default type for current platform (determined at compile time)
- static const Type typeDefault;
+ // constants and static functions
+ // default type for current platform (determined at compile time)
+ static const wxTextFileType typeDefault;
+
+ // this function returns a string which is identical to "text" passed in
+ // except that the line terminator characters are changed to correspond the
+ // given type. Called with the default argument, the function translates
+ // the string to the native format (Unix for Unix, DOS for Windows, ...).
+ static wxString Translate(const wxString& text,
+ wxTextFileType type = typeDefault);
+
+ // get the file termination string
+ static const wxChar *GetEOL(wxTextFileType type = typeDefault);
// ctors
// def ctor, use Open(string)
wxTextFile() { }
- //
+ //
wxTextFile(const wxString& strFile);
// file operations
// file exists?
bool Exists() const;
+ // create the file if it doesn't already exist
+ bool Create();
+ // same as Create() but with (another) file name
+ bool Create(const wxString& strFile);
// Open() also loads file in memory on success
bool Open();
// same as Open() but with (another) file name
// closes the file and frees memory, losing all changes
bool Close();
// is file currently opened?
- bool IsOpened() const { return m_file.IsOpened(); }
+ bool IsOpened() const { return m_isOpened; }
// accessors
// get the number of lines in the file
- size_t GetLineCount() const { return m_aLines.Count(); }
+ size_t GetLineCount() const { return m_aLines.Count(); }
// the returned line may be modified (but don't add CR/LF at the end!)
- wxString& GetLine(uint n) const { return m_aLines[n]; }
- wxString& operator[](uint n) const { return m_aLines[n]; }
+ wxString& GetLine(size_t n) const { return m_aLines[n]; }
+ wxString& operator[](size_t n) const { return m_aLines[n]; }
+
+ // the current line has meaning only when you're using
+ // GetFirstLine()/GetNextLine() functions, it doesn't get updated when
+ // you're using "direct access" i.e. GetLine()
+ size_t GetCurrentLine() const { return m_nCurLine; }
+ void GoToLine(size_t n) { m_nCurLine = n; }
+ bool Eof() const { return (m_aLines.Count() == 0 || m_nCurLine == m_aLines.Count() - 1); }
+
+ // these methods allow more "iterator-like" traversal of the list of
+ // lines, i.e. you may write something like:
+ // for ( str = GetFirstLine(); !Eof(); str = GetNextLine() ) { ... }
+
+ // NB: const is commented out because not all compilers understand
+ // 'mutable' keyword yet (m_nCurLine should be mutable)
+ wxString& GetFirstLine() /* const */ { return m_aLines[m_nCurLine = 0]; }
+ wxString& GetNextLine() /* const */ { return m_aLines[++m_nCurLine]; }
+ wxString& GetPrevLine() /* const */
+ { wxASSERT(m_nCurLine > 0); return m_aLines[--m_nCurLine]; }
+ wxString& GetLastLine() /* const */
+ { return m_aLines[m_nCurLine = m_aLines.Count() - 1]; }
+
// get the type of the line (see also GetEOL)
- Type GetLineType(uint n) const { return m_aTypes[n]; }
+ wxTextFileType GetLineType(size_t n) const { return m_aTypes[n]; }
// guess the type of file (m_file is supposed to be opened)
- Type GuessType() const;
+ wxTextFileType GuessType() const;
// get the name of the file
- const char *GetName() const { return m_strFile.c_str(); }
+ const wxChar *GetName() const { return m_strFile.c_str(); }
// add/remove lines
// add a line to the end
- void AddLine(const wxString& str, Type type = typeDefault)
+ void AddLine(const wxString& str, wxTextFileType type = typeDefault)
{ m_aLines.Add(str); m_aTypes.Add(type); }
// insert a line before the line number n
- void InsertLine(const wxString& str, uint n, Type type = typeDefault)
+ void InsertLine(const wxString& str,
+ size_t n,
+ wxTextFileType type = typeDefault)
{ m_aLines.Insert(str, n); m_aTypes.Insert(type, n); }
// delete one line
- void RemoveLine(uint n) { m_aLines.Remove(n); m_aTypes.Remove(n); }
+ void RemoveLine(size_t n) { m_aLines.RemoveAt(n); m_aTypes.RemoveAt(n); }
// change the file on disk (default argument means "don't change type")
// possibly in another format
- bool Write(Type typeNew = Type_None);
-
- // get the file termination string
- inline static const char *GetEOL(Type type = typeDefault)
- {
- switch ( type ) {
- case Type_None: return "";
- case Type_Unix: return "\n";
- case Type_Dos: return "\r\n";
- case Type_Mac: return "\r";
-
- default:
- wxFAIL_MSG("bad file type in wxTextFile::GetEOL.");
- return NULL;
- }
- }
+ bool Write(wxTextFileType typeNew = wxTextFileType_None);
// dtor
~wxTextFile();
// read the file in memory (m_file is supposed to be just opened)
bool Read();
- WX_DEFINE_ARRAY(Type, ArrayFileType);
-
wxFile m_file; // current file
+
ArrayFileType m_aTypes; // type of each line
wxArrayString m_aLines; // lines of file
+
+ size_t m_nCurLine; // number of current line in the file
+
+ bool m_isOpened; // was the file successfully opened the last time?
+
wxString m_strFile; // name of the file
};
-#endif //_TEXTFILE_H
+#else // !wxUSE_TEXTFILE
+
+// these static wxTextFile methods are used internally by wxWindows, so should
+// be defined even if we're compiling without wxTextFile at all.
+
+class WXDLLEXPORT wxTextFile
+{
+public:
+ // default type for current platform (determined at compile time)
+ static const wxTextFileType typeDefault;
+
+ // this function returns a string which is identical to "text" passed in
+ // except that the line terminator characters are changed to correspond the
+ // given type. Called with the default argument, the function translates
+ // the string to the native format (Unix for Unix, DOS for Windows, ...).
+ static wxString Translate(const wxString& text,
+ wxTextFileType type = typeDefault);
+
+ // get the file termination string
+ static const wxChar *GetEOL(wxTextFileType type = typeDefault);
+
+private:
+ // copy ctor/assignment operator not implemented
+ wxTextFile(const wxTextFile&);
+ wxTextFile& operator=(const wxTextFile&);
+
+ // suppress the gcc warning: 'class defines only private constructors and
+ // has no friends'
+#ifdef __GNUG__
+ friend class wxTextFileDummyFriend;
+#endif // gcc
+};
+
+#endif // wxUSE_TEXTFILE
+
+#endif // _WX_TEXTFILE_H
+
projects / wxWidgets.git / blobdiff