diff options
Diffstat (limited to 'kviewshell/plugins/djvu/libdjvu/GIFFManager.cpp')
| -rw-r--r-- | kviewshell/plugins/djvu/libdjvu/GIFFManager.cpp | 663 |
1 files changed, 663 insertions, 0 deletions
diff --git a/kviewshell/plugins/djvu/libdjvu/GIFFManager.cpp b/kviewshell/plugins/djvu/libdjvu/GIFFManager.cpp new file mode 100644 index 00000000..973c6cec --- /dev/null +++ b/kviewshell/plugins/djvu/libdjvu/GIFFManager.cpp @@ -0,0 +1,663 @@ +//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: GIFFManager.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 "GIFFManager.h" +#include "GException.h" +#include "debug.h" + + +#ifdef HAVE_NAMESPACES +namespace DJVU { +# ifdef NOT_DEFINED // Just to fool emacs c++ mode +} +#endif +#endif + + +GIFFChunk::~GIFFChunk(void) {} + +GIFFManager::~GIFFManager(void) {} + +GP<GIFFManager> +GIFFManager::create(void) +{ + GIFFManager *iff=new GIFFManager(); + GP<GIFFManager> retval=iff; + iff->init(); + return retval; +} + +GP<GIFFManager> +GIFFManager::create(const GUTF8String &name) +{ + GIFFManager *iff=new GIFFManager(); + GP<GIFFManager> retval=iff; + iff->init(name); + return retval; +} + +void +GIFFChunk::set_name(GUTF8String name) +{ + DEBUG_MSG("GIFFChunk::set_name(): name='" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + const int colon=name.search(':'); + if(colon>=0) + { + type=name.substr(0,colon); + name=name.substr(colon+1,(unsigned int)-1); + if(name.search(':')>=0) + G_THROW( ERR_MSG("GIFFManager.one_colon") ); + } + + DEBUG_MSG("auto-setting type to '" << type << "'\n"); + + if (name.contains(".[]")>=0) + G_THROW( ERR_MSG("GIFFManager.bad_char") ); + + strncpy(GIFFChunk::name, (const char *)name, 4); + GIFFChunk::name[4]=0; + for(int i=strlen(GIFFChunk::name);i<4;i++) + GIFFChunk::name[i]=' '; +} + +bool +GIFFChunk::check_name(GUTF8String name) +{ + GUTF8String type; + const int colon=name.search(':'); + if(colon>=0) + { + type=name.substr(0,colon); + name=name.substr(colon+1,(unsigned int)-1); + } + + const GUTF8String sname=(name.substr(0,4)+" ").substr(0,4); + + DEBUG_MSG("GIFFChunk::check_name(): type='" << type << "' name='" << sname << "'\n"); + return (type==GIFFChunk::type || !type.length() && GIFFChunk::type=="FORM") + && sname==GIFFChunk::name; +} + +void +GIFFChunk::save(IFFByteStream & istr, bool use_trick) +{ + DEBUG_MSG("GIFFChunk::save(): saving chunk '" << get_full_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (is_container()) + { + istr.put_chunk(get_full_name(), use_trick); + if (chunks.size()) + { + GPosition pos; + for(pos=chunks;pos;++pos) + if (chunks[pos]->get_type()=="PROP") + chunks[pos]->save(istr); + for(pos=chunks;pos;++pos) + if (chunks[pos]->get_type()!="PROP") + chunks[pos]->save(istr); + } else + { + DEBUG_MSG("but it's empty => saving empty container.\n"); + } + istr.close_chunk(); + } else + { + istr.put_chunk(get_name(), use_trick); + istr.get_bytestream()->writall((const char *) data, data.size()); + istr.close_chunk(); + } +} + +void +GIFFChunk::add_chunk(const GP<GIFFChunk> & chunk, int position) +{ + DEBUG_MSG("GIFFChunk::add_chunk(): Adding chunk to '" << get_name() << + "' @ position=" << position << "\n"); + DEBUG_MAKE_INDENT(3); + + if (!type.length()) + { + DEBUG_MSG("Converting the parent to FORM\n"); + type="FORM"; + } + + if (chunk->get_type()=="PROP") + { + DEBUG_MSG("Converting the parent to LIST\n"); + type="LIST"; + } + + GPosition pos; + if (position>=0 && chunks.nth(position, pos)) + { + chunks.insert_before(pos, chunk); + }else + { + chunks.append(chunk); + } +} + +GUTF8String +GIFFChunk::decode_name(const GUTF8String &name, int &number) +{ + DEBUG_MSG("GIFFChunk::decode_name(): Checking brackets in name '" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (name.search('.')>=0) + G_THROW( ERR_MSG("GIFFManager.no_dots") ); + + number=0; + const int obracket=name.search('['); + GUTF8String short_name; + if (obracket >= 0) + { + const int cbracket=name.search(']',obracket+1); + if (cbracket < 0) + G_THROW( ERR_MSG("GIFFManager.unmatched") ); + if (name.length() > (unsigned int)(cbracket+1)) + G_THROW( ERR_MSG("GIFFManager.garbage") ); +// number =atoi((const char *)name.substr(obracket+1,cbracket-obracket-1)); + number= name.substr(obracket+1,cbracket-obracket-1).toInt(); + short_name=name.substr(0,obracket); + }else + { + short_name=name; + } + + const int colon=short_name.search(':'); + if (colon>=0) + short_name=short_name.substr(colon+1,(unsigned int)-1); + + for(int i=short_name.length();i<4;i++) + short_name.setat(i, ' '); + + DEBUG_MSG("short_name='" << short_name << "'\n"); + DEBUG_MSG("number=" << number << "\n"); + + return short_name; +} + +void +GIFFChunk::del_chunk(const GUTF8String &name) + // The name may contain brackets to specify the chunk number +{ + DEBUG_MSG("GIFFChunk::del_chunk(): Deleting chunk '" << name << + "' from '" << get_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + + int number; + const GUTF8String short_name=decode_name(name,number); + + GPosition pos=chunks; + for(int num=0;pos;++pos) + { + if ((chunks[pos]->get_name()==short_name)&&(num++ == number)) + { + chunks.del(pos); + break; + } + } + if(! pos) + { + G_THROW( ERR_MSG("GIFFManager.no_chunk") "\t"+short_name+"\t"+GUTF8String(number)+"\t"+get_name()); + } +} + +GP<GIFFChunk> +GIFFChunk::get_chunk(const GUTF8String &name, int * pos_ptr) + // The name may contain brackets to specify the chunk number +{ + DEBUG_MSG("GIFFChunk::get_chunk(): Returning chunk '" << name << + "' from '" << get_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + + int number; + const GUTF8String short_name=decode_name(name,number); + + int num=0; + int pos_num; + GP<GIFFChunk> retval; + GPosition pos; + for(pos=chunks, pos_num=0;pos;++pos, pos_num++) + { + if (chunks[pos]->get_name()==short_name && num++==number) + { + if (pos_ptr) + *pos_ptr=pos_num; + retval=chunks[pos]; + break; + } + } + return retval; +} + +int +GIFFChunk::get_chunks_number(void) +{ + DEBUG_MSG("GIFFChunk::get_chunks_number(): Returning number of chunks '" << name << + "' in '" << get_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + return chunks.size(); +} + +int +GIFFChunk::get_chunks_number(const GUTF8String &name) +{ + DEBUG_MSG("GIFFChunk::get_chunks_number(): Returning number of chunks '" << name << + "' in '" << get_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (name.contains("[]")>=0) + G_THROW( ERR_MSG("GIFFManager.no_brackets") ); + + int number; + GUTF8String short_name=decode_name(name,number); + + int num=0; + for(GPosition pos=chunks;pos;++pos) + num+=(chunks[pos]->get_name()==short_name); + return num; +} + +//************************************************************************ + +void +GIFFManager::add_chunk(GUTF8String parent_name, const GP<GIFFChunk> & chunk, + int pos) + // parent_name is the fully qualified name of the PARENT + // IT MAY BE EMPTY + // All the required chunks will be created + // pos=-1 means to append the chunk +{ + DEBUG_MSG("GIFFManager::add_chunk(): Adding chunk to name='" << parent_name << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (!top_level->get_name().length()) + { + if ((!parent_name.length())||(parent_name[0]!='.')) + G_THROW( ERR_MSG("GIFFManager.no_top_name") ); + if (parent_name.length() < 2) + { + // 'chunk' is actually the new top-level chunk + DEBUG_MSG("since parent_name=='.', making the chunk top-level\n"); + if (!chunk->is_container()) + G_THROW( ERR_MSG("GIFFManager.no_top_cont") ); + top_level=chunk; + return; + } + + DEBUG_MSG("Setting the name of the top-level chunk\n"); + const int next_dot=parent_name.search('.',1); + if(next_dot>=0) + { + top_level->set_name(parent_name.substr(1,next_dot-1)); + }else + { + top_level->set_name(parent_name.substr(1,(unsigned int)-1)); + } + } + + DEBUG_MSG("top level chunk name='" << top_level->get_name() << "'\n"); + + if (parent_name.length() && parent_name[0] == '.') + { + int next_dot=parent_name.search('.',1); + if(next_dot<0) + { + next_dot=parent_name.length(); + } + GUTF8String top_name=parent_name.substr(1,next_dot-1); + if (!top_level->check_name(top_name)) + G_THROW( ERR_MSG("GIFFManager.wrong_name") "\t"+top_name); + parent_name=parent_name.substr(next_dot,(unsigned int)-1); + } + + GP<GIFFChunk> cur_sec=top_level; + const char * start, * end=(const char *)parent_name-1; + do + { + for(start=++end;*end&&(*end!='.');end++) + EMPTY_LOOP; + if (end>start) + { + GUTF8String name(start,end-start); + GUTF8String short_name; + int number=0; + const int obracket=name.search('['); + if (obracket >= 0) + { + const int cbracket=name.search(']',obracket+1); + if (cbracket < 0) + G_THROW( ERR_MSG("GIFFManager.unmatched") ); +// number=atoi((const char *)name.substr(obracket+1,cbracket-obracket-1)); + number = name.substr(obracket+1,cbracket-obracket-1).toInt(); + short_name=name.substr(0,obracket); + }else + { + short_name=name; + } + + for(int i=cur_sec->get_chunks_number(short_name);i<number+1;i++) + cur_sec->add_chunk(GIFFChunk::create(short_name)); + cur_sec=cur_sec->get_chunk(name); + if (!cur_sec) + G_THROW( ERR_MSG("GIFFManager.unknown") "\t"+name); + } + } while(*end); + cur_sec->add_chunk(chunk, pos); +} + +void +GIFFManager::add_chunk(GUTF8String name, const TArray<char> & data) + // name is fully qualified name of the chunk TO BE INSERTED. + // it may contain brackets at the end to set the position + // All the required chunks will be created +{ + DEBUG_MSG("GIFFManager::add_chunk(): adding plain chunk with name='" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + GUTF8String chunk_name; + const int lastdot=name.rsearch('.'); + if(lastdot < 0) + { + chunk_name=name; + name=name.substr(0,lastdot); + }else + { + chunk_name=name.substr(lastdot+1,(unsigned int)-1); + } + + int pos=-1; + const int obracket=chunk_name.search('['); + if (obracket >= 0) + { + const int cbracket=chunk_name.search(']',obracket+1); + if (cbracket < 0) + G_THROW( ERR_MSG("GIFFManager.unmatched") ); + if (name.length() > (unsigned int)(cbracket+1)) + G_THROW( ERR_MSG("GIFFManager.garbage") ); +// pos=atoi((const char *)chunk_name.substr(obracket+1,cbracket-obracket-1)); + pos = chunk_name.substr(obracket+1,cbracket-obracket-1).toInt(); + chunk_name=chunk_name.substr(0,obracket); + } + DEBUG_MSG("Creating new chunk with name " << chunk_name << "\n"); + GP<GIFFChunk> chunk; + chunk=GIFFChunk::create(chunk_name, data); + add_chunk(name, chunk, pos); +} + +void +GIFFManager::del_chunk(void) +{ + DEBUG_MSG("GIFFManager::del_chunk(): Deleting chunk\n"); + DEBUG_MAKE_INDENT(3); + + G_THROW( ERR_MSG("GIFFManager.del_empty") ); +} + +void +GIFFManager::del_chunk(GUTF8String name) + // "name" should be fully qualified, that is contain dots. + // It may also end with [] to set the chunk order number +{ + DEBUG_MSG("GIFFManager::del_chunk(): Deleting chunk '" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (!name.length()) + G_THROW( ERR_MSG("GIFFManager.del_empty") ); + + if (name[0]=='.') + { + const int next_dot=name.search('.',1); + if (next_dot < 0) + { + if (top_level->check_name(name.substr(1,(unsigned int)-1))) + { + DEBUG_MSG("Removing top level chunk..\n"); + top_level=GIFFChunk::create(); + return; + } + G_THROW( ERR_MSG("GIFFManager.wrong_name2") "\t"+name.substr(1,(unsigned int)-1)); + } + const GUTF8String top_name=name.substr(1,next_dot-1); + if (!top_level->check_name(top_name)) + G_THROW( ERR_MSG("GIFFManager.wrong_name2") "\t"+top_name); + name=name.substr(next_dot+1,(unsigned int)-1); + } + + GP<GIFFChunk> cur_sec=top_level; + const char * start, * end=(const char *)name-1; + do + { + for(start=++end;*end&&(*end!='.');end++) + EMPTY_LOOP; + if (end>start && *end=='.') + cur_sec=cur_sec->get_chunk(GUTF8String(start, end-start)); + if (!cur_sec) + G_THROW( ERR_MSG("GIFFManager.cant_find") "\t"+GUTF8String(name)); + } while(*end); + + if (!start[0]) + { + G_THROW(GUTF8String( ERR_MSG("GIFFManager.malformed") "\t")+name); + } + + cur_sec->del_chunk(start); +} + +GP<GIFFChunk> +GIFFManager::get_chunk(GUTF8String name, int * pos_num) + // "name" should be fully qualified, that is contain dots. + // It may also end with [] to set the chunk order number +{ + DEBUG_MSG("GIFFManager::get_chunk(): Returning chunk '" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + if (!name.length()) + G_THROW( ERR_MSG("GIFFManager.get_empty") ); + + if (name[0]=='.') + { + const int next_dot=name.search('.',1); + if (next_dot < 0) + { + if (top_level->check_name(name.substr(1,(unsigned int)-1))) + { + DEBUG_MSG("Removing top level chunk..\n"); + return top_level; + } + G_THROW( ERR_MSG("GIFFManager.wrong_name2") "\t"+name.substr(1,(unsigned int)-1)); + } + const GUTF8String top_name=name.substr(1,next_dot-1); + if (!top_level->check_name(top_name)) + G_THROW( ERR_MSG("GIFFManager.wrong_name2") "\t"+top_name); + name=name.substr(next_dot+1,(unsigned int)-1); + } + + GP<GIFFChunk> cur_sec=top_level; + const char * start, * end=(const char *) name-1; + do + { + for(start=++end;*end&&(*end!='.');end++) + EMPTY_LOOP; + if (end>start) + cur_sec=cur_sec->get_chunk(GUTF8String(start, end-start), pos_num); + if (!cur_sec) + break; + } while(*end); + + return cur_sec; +} + +int +GIFFManager::get_chunks_number(void) +{ + DEBUG_MSG("GIFFManager::get_chunks_number()\n"); + DEBUG_MAKE_INDENT(3); + return top_level->get_chunks_number(); +} + +int +GIFFManager::get_chunks_number(const GUTF8String &name) + // Returns the number of chunks with given fully qualified name +{ + DEBUG_MSG("GIFFManager::get_chunks_number(): name='" << name << "'\n"); + DEBUG_MAKE_INDENT(3); + + int retval; + const int last_dot=name.rsearch('.'); + if (last_dot<0) + { + retval=top_level->get_chunks_number(name); + }else if(!last_dot) + { + retval=(top_level->get_name()==name.substr(1,(unsigned int)-1))?1:0; + }else + { + GP<GIFFChunk> chunk=get_chunk(name.substr(0,last_dot)); + retval=( chunk + ?(chunk->get_chunks_number(name.substr(last_dot+1,(unsigned int)-1))) + :0 ); + } + return retval; +} + +void +GIFFManager::load_chunk(IFFByteStream & istr, GP<GIFFChunk> chunk) +{ + DEBUG_MSG("GIFFManager::load_chunk(): loading contents of chunk '" << + chunk->get_name() << "'\n"); + DEBUG_MAKE_INDENT(3); + + int chunk_size; + GUTF8String chunk_id; + while ((chunk_size=istr.get_chunk(chunk_id))) + { + if (istr.check_id(chunk_id)) + { + GP<GIFFChunk> ch=GIFFChunk::create(chunk_id); + load_chunk(istr, ch); + chunk->add_chunk(ch); + } else + { + TArray<char> data(chunk_size-1); + istr.get_bytestream()->readall( (char*)data, data.size()); + GP<GIFFChunk> ch=GIFFChunk::create(chunk_id, data); + chunk->add_chunk(ch); + } + istr.close_chunk(); + } +} + +void +GIFFManager::load_file(const TArray<char> & data) +{ + GP<ByteStream> str=ByteStream::create((const char *)data, data.size()); + load_file(str); +} + +void +GIFFManager::load_file(GP<ByteStream> str) +{ + DEBUG_MSG("GIFFManager::load_file(): Loading IFF file.\n"); + DEBUG_MAKE_INDENT(3); + + GP<IFFByteStream> gistr=IFFByteStream::create(str); + IFFByteStream &istr=*gistr; + GUTF8String chunk_id; + if (istr.get_chunk(chunk_id)) + { + if (chunk_id.substr(0,5) != "FORM:") + G_THROW( ERR_MSG("GIFFManager.cant_find2") ); + set_name(chunk_id); + load_chunk(istr, top_level); + istr.close_chunk(); + } +} + +void +GIFFManager::save_file(TArray<char> & data) +{ + GP<ByteStream> gstr=ByteStream::create(); + save_file(gstr); + data=gstr->get_data(); +} + +void +GIFFManager::save_file(GP<ByteStream> str) +{ + GP<IFFByteStream> istr=IFFByteStream::create(str); + top_level->save(*istr, 1); +} + + +#ifdef HAVE_NAMESPACES +} +# ifndef NOT_USING_DJVU_NAMESPACE +using namespace DJVU; +# endif +#endif + |