X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1b6dea5de110cd0c5695949d351436048e84e7f8..33754c4d83c59b7523a6da0c4fb21079cb60301c:/src/common/textfile.cpp?ds=sidebyside diff --git a/src/common/textfile.cpp b/src/common/textfile.cpp index 89a8e94033..63f02f1a37 100644 --- a/src/common/textfile.cpp +++ b/src/common/textfile.cpp @@ -1,5 +1,5 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: textfile.cpp +// Name: src/common/textfile.cpp // Purpose: implementation of wxTextFile class // Author: Vadim Zeitlin // Modified by: @@ -23,11 +23,13 @@ #pragma hdrstop #endif //__BORLANDC__ -#if !wxUSE_FILE +#if !wxUSE_FILE || !wxUSE_TEXTBUFFER #undef wxUSE_TEXTFILE #define wxUSE_TEXTFILE 0 #endif // wxUSE_FILE +#if wxUSE_TEXTFILE + #ifndef WX_PRECOMP #include "wx/string.h" #include "wx/intl.h" @@ -35,254 +37,75 @@ #include "wx/log.h" #endif -#include "wx/textfile.h" +#include "wx/textfile.h" // ============================================================================ // wxTextFile class implementation // ============================================================================ -// ---------------------------------------------------------------------------- -// static methods (always compiled in) -// ---------------------------------------------------------------------------- - -// default type is the native one -const wxTextFileType wxTextFile::typeDefault = -#if defined(__WINDOWS__) - wxTextFileType_Dos; -#elif defined(__UNIX__) - wxTextFileType_Unix; -#elif defined(__WXMAC__) - wxTextFileType_Mac; -#elif defined(__WXPM__) - wxTextFileType_Os2; -#else - wxTextFileType_None; - #error "wxTextFile: unsupported platform." -#endif - -const wxChar *wxTextFile::GetEOL(wxTextFileType type) +wxTextFile::wxTextFile(const wxString& strFileName) + : wxTextBuffer(strFileName) { - switch ( type ) { - default: - wxFAIL_MSG(wxT("bad file type in wxTextFile::GetEOL.")); - // fall through nevertheless - we must return something... - - case wxTextFileType_None: return wxT(_T("")); - case wxTextFileType_Unix: return wxT(_T("\n")); - case wxTextFileType_Dos: return wxT(_T("\r\n")); - case wxTextFileType_Mac: return wxT(_T("\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; - } - - // add to the current line - result += ch; - } - } - - if ( chLast ) { - // trailing '\r' - result += eol; - } - - return result; -} - -#if wxUSE_TEXTFILE // ---------------------------------------------------------------------------- -// ctors & dtor +// file operations // ---------------------------------------------------------------------------- -wxTextFile::wxTextFile(const wxString& strFile) : m_strFile(strFile) +bool wxTextFile::OnExists() const { - m_nCurLine = 0; - m_isOpened = FALSE; + return wxFile::Exists(m_strBufferName); } -wxTextFile::~wxTextFile() + +bool wxTextFile::OnOpen(const wxString &strBufferName, wxTextBufferOpenMode OpenMode) { - // m_file dtor called automatically -} + wxFile::OpenMode FileOpenMode; -// ---------------------------------------------------------------------------- -// file operations -// ---------------------------------------------------------------------------- + switch ( OpenMode ) + { + default: + wxFAIL_MSG( _T("unknown open mode in wxTextFile::Open") ); + // fall through -bool wxTextFile::Exists() const -{ - return wxFile::Exists(m_strFile); -} + case ReadAccess : + FileOpenMode = wxFile::read; + break; -bool wxTextFile::Create(const wxString& strFile) -{ - m_strFile = strFile; + case WriteAccess : + FileOpenMode = wxFile::write; + break; + } - return Create(); + return m_file.Open(strBufferName.c_str(), FileOpenMode); } -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) +bool wxTextFile::OnClose() { - m_strFile = strFile; - - return Open(); + return m_file.Close(); } -bool wxTextFile::Open() -{ - // file name must be either given in ctor or in Open(const wxString&) - wxASSERT( !m_strFile.IsEmpty() ); - - // open file in read-only mode - if ( !m_file.Open(m_strFile) ) - return FALSE; - - // read file into memory - m_isOpened = Read(); - m_file.Close(); - - 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. -wxTextFileType wxTextFile::GuessType() const +bool wxTextFile::OnRead(wxMBConv& conv) { // file should be opened and we must be in it's beginning wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 ); - // scan the file lines - 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) - 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 wxTextFileType_Unix: nUnix++; break; \ - case wxTextFileType_Dos: nDos++; break; \ - case wxTextFileType_Mac: nMac++; break; \ - default: wxFAIL_MSG(_("unknown line terminator")); \ - } - - size_t n; - for ( n = 0; n < nScan; n++ ) // the beginning - AnalyseLine(n); - for ( n = (nCount - nScan)/2; n < (nCount + nScan)/2; n++ ) - AnalyseLine(n); - for ( n = nCount - nScan; n < nCount; n++ ) - AnalyseLine(n); - - #undef AnalyseLine - - // 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()); - } - else { - #define GREATER_OF(t1, t2) n##t1 == n##t2 ? typeDefault \ - : 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 ? wxTextFileType_Mac : typeDefault; - } -#endif // __WATCOMC__ - - #undef GREATER_OF - } - - return typeDefault; -} - -bool wxTextFile::Read() -{ - // file should be opened and we must be in it's beginning - wxASSERT( m_file.IsOpened() && m_file.Tell() == 0 ); +#if wxUSE_UNICODE + char conv_mbBuf[2]; + wchar_t conv_wcBuf[2]; + conv_mbBuf[1] = 0; +#else + (void)conv; +#endif wxString str; char ch, chLast = '\0'; char buf[1024]; int n, nRead; - while ( !m_file.Eof() ) { + do { nRead = m_file.Read(buf, WXSIZEOF(buf)); if ( nRead == wxInvalidOffset ) { // read error (error message already given in wxFile::Read) @@ -294,8 +117,7 @@ bool wxTextFile::Read() switch ( ch ) { case '\n': // Dos/Unix line termination - m_aLines.Add(str); - m_aTypes.Add(chLast == '\r' ? wxTextFileType_Dos + AddLine(str, chLast == '\r' ? wxTextFileType_Dos : wxTextFileType_Unix); str.Empty(); chLast = '\n'; @@ -304,8 +126,7 @@ bool wxTextFile::Read() case '\r': if ( chLast == '\r' ) { // Mac empty line - m_aLines.Add(wxEmptyString); - m_aTypes.Add(wxTextFileType_Mac); + AddLine(wxEmptyString, wxTextFileType_Mac); } else chLast = '\r'; @@ -314,56 +135,60 @@ bool wxTextFile::Read() default: if ( chLast == '\r' ) { // Mac line termination - m_aLines.Add(str); - m_aTypes.Add(wxTextFileType_Mac); + AddLine(str, wxTextFileType_Mac); chLast = ch; +#if wxUSE_UNICODE + conv_mbBuf[0] = ch; + if (conv.MB2WC(conv_wcBuf, conv_mbBuf, 2) == (size_t)-1) + conv_wcBuf[0] = ch; + str = conv_wcBuf[0]; +#else str = ch; +#endif } else { // add to the current line +#if wxUSE_UNICODE + conv_mbBuf[0] = ch; + if (conv.MB2WC(conv_wcBuf, conv_mbBuf, 2) == (size_t)-1) + conv_wcBuf[0] = ch; + str += conv_wcBuf[0]; +#else str += ch; +#endif } } } - } + } while ( nRead == WXSIZEOF(buf) ); // anything in the last line? if ( !str.IsEmpty() ) { - m_aTypes.Add(wxTextFileType_None); // no line terminator - m_aLines.Add(str); + AddLine(str, wxTextFileType_None); // no line terminator } return TRUE; } -bool wxTextFile::Close() -{ - m_aTypes.Clear(); - m_aLines.Clear(); - m_nCurLine = 0; - m_isOpened = FALSE; - - return TRUE; -} -bool wxTextFile::Write(wxTextFileType typeNew) +bool wxTextFile::OnWrite(wxTextFileType typeNew, wxMBConv& conv) { - wxTempFile fileTmp(m_strFile); + wxTempFile fileTmp(m_strBufferName); - if ( !fileTmp.IsOpened() ) { - wxLogError(_("can't write file '%s' to disk."), m_strFile.c_str()); - return FALSE; - } + if ( !fileTmp.IsOpened() ) { + wxLogError(_("can't write buffer '%s' to disk."), m_strBufferName.c_str()); + return FALSE; + } - 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)); - } + size_t nCount = GetLineCount(); + for ( size_t n = 0; n < nCount; n++ ) { + fileTmp.Write(GetLine(n) + + GetEOL(typeNew == wxTextFileType_None ? GetLineType(n) + : typeNew), + conv); + } - // replace the old file with this one - return fileTmp.Commit(); + // replace the old file with this one + return fileTmp.Commit(); } #endif // wxUSE_TEXTFILE