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Diffstat (limited to 'kviewshell/plugins/djvu/libdjvu/GException.cpp')
| -rw-r--r-- | kviewshell/plugins/djvu/libdjvu/GException.cpp | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/kviewshell/plugins/djvu/libdjvu/GException.cpp b/kviewshell/plugins/djvu/libdjvu/GException.cpp new file mode 100644 index 00000000..f3f84dda --- /dev/null +++ b/kviewshell/plugins/djvu/libdjvu/GException.cpp @@ -0,0 +1,284 @@ +//C- -*- C++ -*- +//C- ------------------------------------------------------------------- +//C- DjVuLibre-3.5 +//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun. +//C- Copyright (c) 2001 AT&T +//C- +//C- This software is subject to, and may be distributed under, the +//C- GNU General Public License, Version 2. The license should have +//C- accompanied the software or you may obtain a copy of the license +//C- from the Free Software Foundation at http://www.fsf.org . +//C- +//C- This program is distributed in the hope that it will be useful, +//C- but WITHOUT ANY WARRANTY; without even the implied warranty of +//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +//C- GNU General Public License for more details. +//C- +//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library +//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech +//C- Software authorized us to replace the original DjVu(r) Reference +//C- Library notice by the following text (see doc/lizard2002.djvu): +//C- +//C- ------------------------------------------------------------------ +//C- | DjVu (r) Reference Library (v. 3.5) +//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved. +//C- | The DjVu Reference Library is protected by U.S. Pat. No. +//C- | 6,058,214 and patents pending. +//C- | +//C- | This software is subject to, and may be distributed under, the +//C- | GNU General Public License, Version 2. The license should have +//C- | accompanied the software or you may obtain a copy of the license +//C- | from the Free Software Foundation at http://www.fsf.org . +//C- | +//C- | The computer code originally released by LizardTech under this +//C- | license and unmodified by other parties is deemed "the LIZARDTECH +//C- | ORIGINAL CODE." Subject to any third party intellectual property +//C- | claims, LizardTech grants recipient a worldwide, royalty-free, +//C- | non-exclusive license to make, use, sell, or otherwise dispose of +//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the +//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU +//C- | General Public License. This grant only confers the right to +//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to +//C- | the extent such infringement is reasonably necessary to enable +//C- | recipient to make, have made, practice, sell, or otherwise dispose +//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to +//C- | any greater extent that may be necessary to utilize further +//C- | modifications or combinations. +//C- | +//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY +//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF +//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. +//C- +------------------------------------------------------------------ +// +// $Id: GException.cpp,v 1.14 2004/08/06 15:11:29 leonb Exp $ +// $Name: release_3_5_15 $ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#if NEED_GNUG_PRAGMAS +# pragma implementation +#endif + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include "GException.h" +#include "DjVuMessageLite.h" +#include "debug.h" + + +#ifdef HAVE_NAMESPACES +namespace DJVU { +# ifdef NOT_DEFINED // Just to fool emacs c++ mode +} +#endif +#endif + + +// - Author: Leon Bottou, 05/1997 + +GException::GException() + : cause(0), file(0), func(0), line(0), source(GException::GINTERNAL) +{ +} + +const char * const +GException::outofmemory = ERR_MSG("GException.outofmemory"); + +GException::GException(const GException & exc) + : file(exc.file), func(exc.func), line(exc.line), source(exc.source) +{ + if (exc.cause && exc.cause!=outofmemory) + { + char *s = new char[strlen(exc.cause)+1]; + strcpy(s, exc.cause); + cause = s; + } + else + { + cause = exc.cause; + } +} + +GException::GException (const char *xcause, const char *file, int line, + const char *func, const source_type xsource) + : file(file), func(func), line(line), source(xsource) +{ + // good place to set a breakpoint and DEBUG message too. + // It'd hard to track exceptions which seem to go from nowhere +#ifdef DEBUG_MSG + DEBUG_MSG("GException::GException(): cause=" << (xcause ? xcause : "unknown") << "\n"); +#endif + if (xcause && xcause!=outofmemory) + { + char *s = new char[strlen(xcause)+1]; + strcpy(s, xcause); + cause = s; + } + else + { + cause = xcause; + } +} + +GException::~GException(void) +{ + if (cause && cause!=outofmemory ) + delete [] const_cast<char*>(cause); + cause=file=func=0; +} + +GException & +GException::operator=(const GException & exc) +{ + if (cause && cause!=outofmemory) + delete [] const_cast<char*>(cause); + cause = 0; + file = exc.file; + func = exc.func; + line = exc.line; + source=exc.source; + if (exc.cause && exc.cause!=outofmemory) + { + char *s = new char[strlen(exc.cause)+1]; + strcpy(s, exc.cause); + cause = s; + } + else + { + cause = exc.cause; + } + return *this; +} + +void +GException::perror(void) const +{ + fflush(0); + DjVuPrintErrorUTF8("*** "); + DjVuMessageLite::perror(get_cause()); + if (file && line>0) + DjVuPrintErrorUTF8("*** (%s:%d)\n", file, line); + else if (file) + DjVuPrintErrorUTF8("*** (%s)\n", file); + if (func) + DjVuPrintErrorUTF8("*** '%s'\n", func); + DjVuPrintErrorUTF8("\n"); +} + +const char* +GException::get_cause(void) const +{ + if (! cause) + return "Invalid exception"; + return cause; +} + +int +GException::cmp_cause(const char s1[] , const char s2[]) +{ + int retval; + if(! s2 || !s2[0]) + { + retval=(s1&&s1[0])?1:(-1); + }else if(! s1 || !s1[0]) + { + retval=(-1); + }else + { + const char *end_s1=strpbrk(s1,"\t\n"); + const int n1=end_s1?(int)((size_t)end_s1-(size_t)s1):strlen(s1); + const char *end_s2=strpbrk(s1,"\t\n"); + const int n2=end_s2?(int)((size_t)end_s2-(size_t)s2):strlen(s2); + retval=(n1==n2)?strncmp(s1,s2,n1):strcmp(s1,s2); + } + return retval; +} + +int +GException::cmp_cause(const char s2[]) const +{ + return cmp_cause(cause,s2); +} + +#ifdef USE_EXCEPTION_EMULATION + +GExceptionHandler *GExceptionHandler::head = 0; + +void +GExceptionHandler::emthrow(const GException &gex) +{ + if (head) + { + head->current = gex; + longjmp(head->jump, -1); + } + else + { + DjVuPrintErrorUTF8("\n*** Unhandled exception"); + gex.perror(); + abort(); + } +} + +#else // ! USE_EXCEPTION_EMULATION + +static int abort_on_exception = 0; + +void +#ifndef NO_LIBGCC_HOOKS +GExceptionHandler::exthrow(const GException &ex) +#else +GExceptionHandler::exthrow(const GException ex) +#endif /* NO_LIBGCC_HOOKS */ +{ + if (abort_on_exception) + abort(); + throw ex; +} + +void +GExceptionHandler::rethrow(void) +{ + if (abort_on_exception) + abort(); + throw; +} + +#endif + + + +// ------ MEMORY MANAGEMENT HANDLER + +#ifndef NEED_DJVU_MEMORY +// This is not activated when C++ memory management +// is overidden. The overriding functions handle +// memory exceptions by themselves. +# if defined(_MSC_VER) +// Microsoft is different! +static int throw_memory_error(size_t) { G_THROW(GException::outofmemory); return 0; } +static int (*old_handler)(size_t) = _set_new_handler(throw_memory_error); +# else // !_MSC_VER +// Standard C++ +static void throw_memory_error() { G_THROW(GException::outofmemory); } +# if !defined(WIN32) && !defined(__CYGWIN32__) && !defined(OS2) +# ifdef HAVE_STDINCLUDES +static void (*old_handler)() = std::set_new_handler(throw_memory_error); +# else +static void (*old_handler)() = set_new_handler(throw_memory_error); +# endif // HAVE_STDINCLUDES +# endif // ! WIN32 +# endif // !_MSC_VER +#endif // !NEED_DJVU_MEMORY + + +#ifdef HAVE_NAMESPACES +} +# ifndef NOT_USING_DJVU_NAMESPACE +using namespace DJVU; +# endif +#endif + |