22c248be96
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@386 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
124 lines
3.8 KiB
C++
124 lines
3.8 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: textfile.h
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// Purpose: class wxTextFile to work with text files of _small_ size
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// (file is fully loaded in memory) and which understands CR/LF
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// differences between platforms.
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 03.04.98
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _TEXTFILE_H
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#define _TEXTFILE_H
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#ifdef __GNUG__
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#pragma interface "textfile.h"
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#endif
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#include "wx/defs.h"
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#include "wx/string.h"
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#include "wx/file.h"
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#include "wx/dynarray.h"
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// ----------------------------------------------------------------------------
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// wxTextFile
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// ----------------------------------------------------------------------------
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class wxTextFile
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{
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public:
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// constants
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enum Type
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{
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Type_None, // incomplete (the last line of the file only)
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Type_Unix, // line is terminated with 'CR' = 0xA = 10 = '\n'
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Type_Dos, // 'LF' 'CR'
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Type_Mac // 'LF' = 0xD = 12 = '\r'
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};
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// default type for current platform (determined at compile time)
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static const Type typeDefault;
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// ctors
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// def ctor, use Open(string)
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wxTextFile() { }
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//
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wxTextFile(const wxString& strFile);
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// file operations
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// file exists?
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bool Exists() const;
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// Open() also loads file in memory on success
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bool Open();
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// same as Open() but with (another) file name
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bool Open(const wxString& strFile);
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// closes the file and frees memory, losing all changes
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bool Close();
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// is file currently opened?
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bool IsOpened() const { return m_file.IsOpened(); }
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// accessors
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// get the number of lines in the file
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size_t GetLineCount() const { return m_aLines.Count(); }
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// the returned line may be modified (but don't add CR/LF at the end!)
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wxString& GetLine(uint n) const { return m_aLines[n]; }
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wxString& operator[](uint n) const { return m_aLines[n]; }
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// get the type of the line (see also GetEOL)
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Type GetLineType(uint n) const { return m_aTypes[n]; }
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// guess the type of file (m_file is supposed to be opened)
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Type GuessType() const;
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// get the name of the file
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const char *GetName() const { return m_strFile.c_str(); }
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// add/remove lines
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// add a line to the end
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void AddLine(const wxString& str, Type type = typeDefault)
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{ m_aLines.Add(str); m_aTypes.Add(type); }
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// insert a line before the line number n
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void InsertLine(const wxString& str, uint n, Type type = typeDefault)
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{ m_aLines.Insert(str, n); m_aTypes.Insert(type, n); }
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// delete one line
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void RemoveLine(uint n) { m_aLines.Remove(n); m_aTypes.Remove(n); }
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// change the file on disk (default argument means "don't change type")
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// possibly in another format
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bool Write(Type typeNew = Type_None);
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// get the file termination string
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inline static const char *GetEOL(Type type = typeDefault)
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{
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switch ( type ) {
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case Type_None: return "";
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case Type_Unix: return "\n";
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case Type_Dos: return "\r\n";
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case Type_Mac: return "\r";
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default:
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wxFAIL_MSG("bad file type in wxTextFile::GetEOL.");
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return NULL;
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}
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}
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// dtor
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~wxTextFile();
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private:
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// copy ctor/assignment operator not implemented
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wxTextFile(const wxTextFile&);
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wxTextFile& operator=(const wxTextFile&);
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// read the file in memory (m_file is supposed to be just opened)
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bool Read();
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WX_DEFINE_ARRAY(Type, ArrayFileType);
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wxFile m_file; // current file
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ArrayFileType m_aTypes; // type of each line
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wxArrayString m_aLines; // lines of file
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wxString m_strFile; // name of the file
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};
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#endif //_TEXTFILE_H
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