// Name: textfile.cpp
// Purpose: implementation of wxTextFile class
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 03.04.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// ============================================================================
#ifdef __GNUG__
-#pragma implementation "textfile.h"
+ #pragma implementation "textfile.h"
#endif
#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
+ #pragma hdrstop
#endif //__BORLANDC__
-#include <wx/string.h>
-#include <wx/intl.h>
-#include <wx/file.h>
-#include <wx/log.h>
-#include <wx/textfile.h>
+#if !wxUSE_FILE
+ #undef wxUSE_TEXTFILE
+ #define wxUSE_TEXTFILE 0
+#endif // wxUSE_FILE
+
+#ifndef WX_PRECOMP
+ #include "wx/string.h"
+ #include "wx/intl.h"
+ #include "wx/file.h"
+ #include "wx/log.h"
+#endif
+
+#include "wx/textfile.h"
// ============================================================================
// wxTextFile class implementation
// ============================================================================
// ----------------------------------------------------------------------------
-// static variables
+// static methods (always compiled in)
// ----------------------------------------------------------------------------
-
+
// default type is the native one
-const wxTextFile::Type wxTextFile::typeDefault = wxTextFile::
-#if defined(__WXMSW__)
- Type_Dos;
+const wxTextFileType wxTextFile::typeDefault =
+#if defined(__WINDOWS__)
+ wxTextFileType_Dos;
#elif defined(__UNIX__)
- Type_Unix;
-#elif defined(__MAC__)
- Type_Mac;
- // if you feel brave, remove the next line
- #error "wxTextFile: code for Mac files is untested."
+ wxTextFileType_Unix;
+#elif defined(__WXMAC__)
+ wxTextFileType_Mac;
+#elif defined(__WXPM__)
+ wxTextFileType_Os2;
#else
- Type_None;
+ wxTextFileType_None;
#error "wxTextFile: unsupported platform."
#endif
+const wxChar *wxTextFile::GetEOL(wxTextFileType type)
+{
+ switch ( type ) {
+ default:
+ wxFAIL_MSG(wxT("bad file type in wxTextFile::GetEOL."));
+ // fall through nevertheless - we must return something...
+
+ case wxTextFileType_None: return wxT("");
+ case wxTextFileType_Unix: return wxT("\n");
+ case wxTextFileType_Dos: return wxT("\r\n");
+ case wxTextFileType_Mac: return wxT("\r");
+ }
+}
+
+wxString wxTextFile::Translate(const wxString& text, wxTextFileType type)
+{
+ // don't do anything if there is nothing to do
+ if ( type == wxTextFileType_None )
+ return text;
+
+ // GRG: don't do anything either if it is empty
+ if ( text.IsEmpty() )
+ return text;
+
+ wxString eol = GetEOL(type), result;
+
+ // optimization: we know that the length of the new string will be about
+ // the same as the length of the old one, so prealloc memory to aviod
+ // unnecessary relocations
+ result.Alloc(text.Len());
+
+ wxChar chLast = 0;
+ for ( const wxChar *pc = text.c_str(); *pc; pc++ )
+ {
+ wxChar ch = *pc;
+ switch ( ch ) {
+ case _T('\n'):
+ // Dos/Unix line termination
+ result += eol;
+ chLast = 0;
+ break;
+
+ case _T('\r'):
+ if ( chLast == _T('\r') ) {
+ // Mac empty line
+ result += eol;
+ }
+ else {
+ // just remember it: we don't know whether it is just "\r"
+ // or "\r\n" yet
+ chLast = _T('\r');
+ }
+ break;
+
+ default:
+ if ( chLast == _T('\r') ) {
+ // Mac line termination
+ result += eol;
+
+ // reset chLast to avoid inserting another eol before the
+ // next character
+ chLast = 0;
+ }
+
+ // add to the current line
+ result += ch;
+ }
+ }
+
+ if ( chLast ) {
+ // trailing '\r'
+ result += eol;
+ }
+
+ return result;
+}
+
+#if wxUSE_TEXTFILE
// ----------------------------------------------------------------------------
// ctors & dtor
wxTextFile::wxTextFile(const wxString& strFile) : m_strFile(strFile)
{
+ m_nCurLine = 0;
+ m_isOpened = FALSE;
}
wxTextFile::~wxTextFile()
// file operations
// ----------------------------------------------------------------------------
+bool wxTextFile::Exists() const
+{
+ return wxFile::Exists(m_strFile);
+}
+
+bool wxTextFile::Create(const wxString& strFile)
+{
+ m_strFile = strFile;
+
+ return Create();
+}
+
+bool wxTextFile::Create()
+{
+ // file name must be either given in ctor or in Create(const wxString&)
+ wxASSERT( !m_strFile.IsEmpty() );
+
+ // if the file already exists do nothing
+ if ( Exists() ) return FALSE;
+
+ if ( m_file.Open(m_strFile, wxFile::write) )
+ {
+ m_file.Close();
+ return TRUE;
+ }
+ else
+ {
+ return FALSE;
+ }
+}
+
bool wxTextFile::Open(const wxString& strFile)
{
m_strFile = strFile;
+
return Open();
}
return FALSE;
// read file into memory
- bool bRet = Read();
+ m_isOpened = Read();
m_file.Close();
- return bRet;
+ return m_isOpened;
}
// analyse some lines of the file trying to guess it's type.
// if it fails, it assumes the native type for our platform.
-wxTextFile::Type wxTextFile::GuessType() const
+wxTextFileType wxTextFile::GuessType() const
{
// file should be opened and we must be in it's beginning
wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 );
// scan the file lines
- uint nUnix = 0, // number of '\n's alone
+ size_t nUnix = 0, // number of '\n's alone
nDos = 0, // number of '\r\n'
nMac = 0; // number of '\r's
// we take MAX_LINES_SCAN in the beginning, middle and the end of file
#define MAX_LINES_SCAN (10)
- uint nCount = m_aLines.Count() / 3,
+ size_t nCount = m_aLines.Count() / 3,
nScan = nCount > 3*MAX_LINES_SCAN ? MAX_LINES_SCAN : nCount / 3;
#define AnalyseLine(n) \
switch ( m_aTypes[n] ) { \
- case Type_Unix: nUnix++; break; \
- case Type_Dos: nDos++; break; \
- case Type_Mac: nMac++; break; \
+ case wxTextFileType_Unix: nUnix++; break; \
+ case wxTextFileType_Dos: nDos++; break; \
+ case wxTextFileType_Mac: nMac++; break; \
+ default: wxFAIL_MSG(_("unknown line terminator")); \
}
- uint n;
+ size_t n;
for ( n = 0; n < nScan; n++ ) // the beginning
AnalyseLine(n);
for ( n = (nCount - nScan)/2; n < (nCount + nScan)/2; n++ )
#undef AnalyseLine
- // interpret the results (@@ far from being even 50% fool proof)
+ // interpret the results (FIXME far from being even 50% fool proof)
if ( nDos + nUnix + nMac == 0 ) {
// no newlines at all
- wxLogWarning("'%s' is probably a binary file.", m_strFile.c_str());
+ wxLogWarning(_("'%s' is probably a binary file."), m_strFile.c_str());
}
else {
#define GREATER_OF(t1, t2) n##t1 == n##t2 ? typeDefault \
- : n##t1 > n##t2 ? Type_##t1 \
- : Type_##t2
+ : n##t1 > n##t2 \
+ ? wxTextFileType_##t1 \
+ : wxTextFileType_##t2
+ // Watcom C++ doesn't seem to be able to handle the macro
+#if !defined(__WATCOMC__)
if ( nDos > nUnix )
return GREATER_OF(Dos, Mac);
else if ( nDos < nUnix )
return GREATER_OF(Unix, Mac);
else {
// nDos == nUnix
- return nMac > nDos ? Type_Mac : typeDefault;
+ return nMac > nDos ? wxTextFileType_Mac : typeDefault;
}
+#endif // __WATCOMC__
#undef GREATER_OF
}
wxString str;
char ch, chLast = '\0';
- while ( !m_file.Eof() ) {
- // @@ should really use a buffer for efficiency
- if ( m_file.Read(&ch, sizeof(ch)) == ofsInvalid ) {
- // read error
- m_file.Close();
+ char buf[1024];
+ int n, nRead;
+ do {
+ nRead = m_file.Read(buf, WXSIZEOF(buf));
+ if ( nRead == wxInvalidOffset ) {
+ // read error (error message already given in wxFile::Read)
return FALSE;
}
- #ifdef __MAC__
- #pragma message("wxTextFile::Read() hasn't been tested with Mac files.")
- #endif
-
- switch ( ch ) {
- case '\n':
- // Dos/Unix line termination
- m_aLines.Add(str);
- m_aTypes.Add(chLast == '\r' ? Type_Dos : Type_Unix);
- str.Empty();
- chLast = '\n';
- break;
-
- case '\r':
- if ( chLast == '\r' ) {
- // Mac empty line
- m_aLines.Add("");
- m_aTypes.Add(Type_Mac);
- }
- else
- chLast = '\r';
- break;
-
- default:
- if ( chLast == '\r' ) {
- // Mac line termination
+ for ( n = 0; n < nRead; n++ ) {
+ ch = buf[n];
+ switch ( ch ) {
+ case '\n':
+ // Dos/Unix line termination
m_aLines.Add(str);
- m_aTypes.Add(Type_Mac);
- str = ch;
- }
- else {
- // add to the current line
- str += ch;
- }
+ m_aTypes.Add(chLast == '\r' ? wxTextFileType_Dos
+ : wxTextFileType_Unix);
+ str.Empty();
+ chLast = '\n';
+ break;
+
+ case '\r':
+ if ( chLast == '\r' ) {
+ // Mac empty line
+ m_aLines.Add(wxEmptyString);
+ m_aTypes.Add(wxTextFileType_Mac);
+ }
+ else
+ chLast = '\r';
+ break;
+
+ default:
+ if ( chLast == '\r' ) {
+ // Mac line termination
+ m_aLines.Add(str);
+ m_aTypes.Add(wxTextFileType_Mac);
+ chLast = ch;
+ str = ch;
+ }
+ else {
+ // add to the current line
+ str += ch;
+ }
+ }
}
- }
+ } while ( nRead == WXSIZEOF(buf) );
// anything in the last line?
if ( !str.IsEmpty() ) {
- m_aTypes.Add(Type_None); // no line terminator
+ m_aTypes.Add(wxTextFileType_None); // no line terminator
m_aLines.Add(str);
}
return TRUE;
}
-bool wxTextFile::Write(Type typeNew)
+bool wxTextFile::Close()
+{
+ m_aTypes.Clear();
+ m_aLines.Clear();
+ m_nCurLine = 0;
+ m_isOpened = FALSE;
+
+ return TRUE;
+}
+
+bool wxTextFile::Write(wxTextFileType typeNew)
{
wxTempFile fileTmp(m_strFile);
if ( !fileTmp.IsOpened() ) {
- wxLogError("can't write file '%s' to disk.", m_strFile.c_str());
+ wxLogError(_("can't write file '%s' to disk."), m_strFile.c_str());
return FALSE;
}
- uint nCount = m_aLines.Count();
- for ( uint n = 0; n < nCount; n++ ) {
- fileTmp.Write(m_aLines[n] +
- GetEOL(typeNew == Type_None ? m_aTypes[n] : typeNew));
+ size_t nCount = m_aLines.Count();
+ for ( size_t n = 0; n < nCount; n++ ) {
+ fileTmp.Write(m_aLines[n] +
+ GetEOL(typeNew == wxTextFileType_None ? m_aTypes[n]
+ : typeNew));
}
// replace the old file with this one
return fileTmp.Commit();
-}
\ No newline at end of file
+}
+
+#endif // wxUSE_TEXTFILE
+
projects / wxWidgets.git / blobdiff