X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/60d8e88654bc14d7c7016f1f8281a26656dc3b10..eff8f7952ed2ecc85b48dd01a047658d7f4eafcb:/src/common/imagpcx.cpp?ds=inline diff --git a/src/common/imagpcx.cpp b/src/common/imagpcx.cpp index 00ebb750a6..fdbb60c16d 100644 --- a/src/common/imagpcx.cpp +++ b/src/common/imagpcx.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: imagpcx.cpp +// Name: src/common/imagpcx.cpp // Purpose: wxImage PCX handler // Author: Guillermo Rodriguez Garcia // Version: 1.1 @@ -8,33 +8,27 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) -#pragma implementation "imagpcx.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif +#if wxUSE_IMAGE && wxUSE_PCX + #ifndef WX_PRECOMP -# include "wx/defs.h" -# include "wx/palette.h" + #include "wx/object.h" + #include "wx/list.h" + #include "wx/log.h" + #include "wx/intl.h" + #include "wx/palette.h" + #include "wx/hash.h" + #include "wx/module.h" #endif -#if wxUSE_IMAGE && wxUSE_PCX - #include "wx/imagpcx.h" #include "wx/wfstream.h" -#include "wx/module.h" -#include "wx/log.h" -#include "wx/intl.h" - -#include "wx/hash.h" -#include "wx/list.h" -#include "wx/object.h" //----------------------------------------------------------------------------- // wxPCXHandler @@ -93,17 +87,15 @@ void RLEencode(unsigned char *p, unsigned int size, wxOutputStream& s) void RLEdecode(unsigned char *p, unsigned int size, wxInputStream& s) { - unsigned int i, data, cont; - // Read 'size' bytes. The PCX official specs say there will be // a decoding break at the end of each scanline (but not at the // end of each plane inside a scanline). Only use this function // to read one or more _complete_ scanlines. Else, more than // 'size' bytes might be read and the buffer might overflow. - while (size > 0) + while (size != 0) { - data = (unsigned char)s.GetC(); + unsigned int data = (unsigned char)s.GetC(); // If ((data & 0xC0) != 0xC0), then the value read is a data // byte. Else, it is a counter (cont = val & 0x3F) and the @@ -116,9 +108,11 @@ void RLEdecode(unsigned char *p, unsigned int size, wxInputStream& s) } else { - cont = data & 0x3F; + unsigned int cont = data & 0x3F; + if (cont > size) // can happen only if the file is malformed + break; data = (unsigned char)s.GetC(); - for (i = 1; i <= cont; i++) + for (unsigned int i = 1; i <= cont; i++) *(p++) = (unsigned char)data; size -= cont; } @@ -220,7 +214,7 @@ int ReadPCX(wxImage *image, wxInputStream& stream) image->Create(width, height); - if (!image->Ok()) + if (!image->IsOk()) return wxPCX_MEMERR; if ((p = (unsigned char *) malloc(bytesperline * nplanes)) == NULL) @@ -337,7 +331,7 @@ int SavePCX(wxImage *image, wxOutputStream& stream) // according to PCX specs) and allocate space for one complete // scanline. - if (!image->Ok()) + if (!image->IsOk()) return wxPCX_INVFORMAT; width = image->GetWidth(); @@ -445,7 +439,9 @@ bool wxPCXHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose if (!CanRead(stream)) { if (verbose) + { wxLogError(_("PCX: this is not a PCX file.")); + } return false; } @@ -493,7 +489,7 @@ bool wxPCXHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos bool wxPCXHandler::DoCanRead( wxInputStream& stream ) { - unsigned char c = stream.GetC(); + unsigned char c = stream.GetC(); // it's ok to modify the stream position here if ( !stream ) return false; @@ -504,4 +500,3 @@ bool wxPCXHandler::DoCanRead( wxInputStream& stream ) #endif // wxUSE_STREAMS #endif // wxUSE_IMAGE && wxUSE_PCX -