diff options
Diffstat (limited to 'kviewshell/plugins/djvu/libdjvu/DjVuNavDir.cpp')
| -rw-r--r-- | kviewshell/plugins/djvu/libdjvu/DjVuNavDir.cpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/kviewshell/plugins/djvu/libdjvu/DjVuNavDir.cpp b/kviewshell/plugins/djvu/libdjvu/DjVuNavDir.cpp new file mode 100644 index 00000000..615041b0 --- /dev/null +++ b/kviewshell/plugins/djvu/libdjvu/DjVuNavDir.cpp @@ -0,0 +1,237 @@ +//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: DjVuNavDir.cpp,v 1.8 2003/11/07 22:08:21 leonb Exp $ +// $Name: release_3_5_15 $ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif +#if NEED_GNUG_PRAGMAS +# pragma implementation +#endif + +#include "DjVuNavDir.h" +#include "debug.h" +#include "GException.h" +#include "GOS.h" +#include "ByteStream.h" +#include "GURL.h" +#include <ctype.h> + + + +#ifdef HAVE_NAMESPACES +namespace DJVU { +# ifdef NOT_DEFINED // Just to fool emacs c++ mode +} +#endif +#endif + + + +DjVuNavDir::DjVuNavDir(const GURL &dirURL) +{ + if (!dirURL) G_THROW( ERR_MSG("DjVuNavDir.zero_dir") ); + baseURL=dirURL.base(); +} + +DjVuNavDir::DjVuNavDir(ByteStream & str, const GURL &dirURL) +{ + if (!dirURL) G_THROW( ERR_MSG("DjVuNavDir.zero_dir") ); + + baseURL=GURL(dirURL).base(); + + decode(str); +} + +void +DjVuNavDir::decode(ByteStream & str) +{ + GCriticalSectionLock lk(&lock); + + GList<GUTF8String> tmp_page2name; + int eof=0; + while(!eof) + { + char buffer[1024]; + char * ptr; + for(ptr=buffer;ptr-buffer<1024;ptr++) + if ((eof=!str.read(ptr, 1)) || *ptr=='\n') break; + if (ptr-buffer==1024) G_THROW( ERR_MSG("DjVuNavDir.long_line") ); + *ptr=0; + if (!strlen(buffer)) continue; + + if (!tmp_page2name.contains(buffer)) + tmp_page2name.append(buffer); + }; + + // Now copying lists to arrays for faster access later + int pages=tmp_page2name.size(); + page2name.resize(pages-1); + + int cnt; + GPosition pos; + for(pos=tmp_page2name, cnt=0;pos;++pos, cnt++) + page2name[cnt]=tmp_page2name[pos]; + + // Now creating reverse mapping (strings => numbers) + for(cnt=0;cnt<pages;cnt++) + { + name2page[page2name[cnt]]=cnt; + url2page[GURL::UTF8(page2name[cnt],baseURL)]=cnt; + } +} + +#ifndef NEED_DECODER_ONLY +void +DjVuNavDir::encode(ByteStream & str) +{ + GCriticalSectionLock lk(&lock); + + for(int i=0;i<page2name.size();i++) + { + GUTF8String & name=page2name[i]; + str.writall((const char*)name, name.length()); + str.writall("\n", 1); + }; +} +#endif //NEED_DECODER_ONLY + +int +DjVuNavDir::get_pages_num(void) const +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + return page2name.size(); +} + +int +DjVuNavDir::name_to_page(const char * name) const +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + if (!name2page.contains(name)) return -1; + return name2page[name]; +} + +int +DjVuNavDir::url_to_page(const GURL & url) const +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + if (!url2page.contains(url)) return -1; + return url2page[url]; +} + +GUTF8String +DjVuNavDir::page_to_name(int page) const +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + if (page<0) + G_THROW( ERR_MSG("DjVuNavDir.neg_page") ); + if (page>=page2name.size()) + G_THROW( ERR_MSG("DjVuNavDir.large_page") ); + return page2name[page]; +} + +GURL +DjVuNavDir::page_to_url(int page) const +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + return GURL::UTF8(page_to_name(page),baseURL); +} + +void +DjVuNavDir::insert_page(int where, const char * name) +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + int pages=page2name.size(); + if (where<0) where=pages; + + page2name.resize(pages); + for(int i=pages;i>where;i--) + page2name[i]=page2name[i-1]; + page2name[where]=name; + name2page[name]=where; + url2page[GURL::UTF8(name,baseURL)]=where; +} + +#ifndef NEED_DECODER_ONLY +void +DjVuNavDir::delete_page(int page_num) +{ + GCriticalSectionLock lk((GCriticalSection *)&lock); + + int pages=page2name.size(); + + if (page_num<0 || page_num>=pages) + G_THROW( ERR_MSG("DjVuNavDir.bad_page") ); + + for(int i=page_num;i<pages-1;i++) + page2name[i]=page2name[i+1]; + page2name.resize(--pages-1); +} +#endif + + + +#ifdef HAVE_NAMESPACES +} +# ifndef NOT_USING_DJVU_NAMESPACE +using namespace DJVU; +# endif +#endif |