| // $Id: tag_find.cpp,v 1.28 2003/03/02 14:39:25 t1mpy Exp $ |
| |
| // id3lib: a C++ library for creating and manipulating id3v1/v2 tags |
| // Copyright 1999, 2000 Scott Thomas Haug |
| |
| // This library is free software; you can redistribute it and/or modify it |
| // under the terms of the GNU Library General Public License as published by |
| // the Free Software Foundation; either version 2 of the License, or (at your |
| // option) any later version. |
| // |
| // This library is distributed in the hope that it will be useful, but WITHOUT |
| // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
| // License for more details. |
| // |
| // You should have received a copy of the GNU Library General Public License |
| // along with this library; if not, write to the Free Software Foundation, |
| // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| // The id3lib authors encourage improvements and optimisations to be sent to |
| // the id3lib coordinator. Please see the README file for details on where to |
| // send such submissions. See the AUTHORS file for a list of people who have |
| // contributed to id3lib. See the ChangeLog file for a list of changes to |
| // id3lib. These files are distributed with id3lib at |
| // http://download.sourceforge.net/id3lib/ |
| |
| #include "tag_impl.h" //has <stdio.h> "tag.h" "header_tag.h" "frame.h" "field.h" "spec.h" "id3lib_strings.h" "utils.h" |
| |
| using namespace dami; |
| |
| ID3_TagImpl::const_iterator ID3_TagImpl::Find(const ID3_Frame *frame) const |
| { |
| const_iterator cur = _frames.begin(); |
| |
| for (; cur != _frames.end(); ++cur) |
| { |
| if (*cur == frame) |
| { |
| break; |
| } |
| } |
| |
| return cur; |
| } |
| |
| ID3_TagImpl::iterator ID3_TagImpl::Find(const ID3_Frame *frame) |
| { |
| iterator cur = _frames.begin(); |
| |
| for (; cur != _frames.end(); ++cur) |
| { |
| if (*cur == frame) |
| { |
| break; |
| } |
| } |
| |
| return cur; |
| } |
| |
| ID3_Frame *ID3_TagImpl::Find(ID3_FrameID id) const |
| { |
| ID3_Frame *frame = NULL; |
| |
| // reset the cursor if it isn't set |
| if (_frames.end() == _cursor) |
| { |
| _cursor = _frames.begin(); |
| } |
| |
| |
| for (int iCount = 0; iCount < 2 && frame == NULL; iCount++) |
| { |
| // We want to cycle through the list to find the matching frame. We |
| // should begin from the cursor, search each successive frame, wrapping |
| // if necessary. The enclosing loop and the assignment statments below |
| // ensure that we first begin at the cursor and search to the end of the |
| // list and, if unsuccessful, start from the beginning of the list and |
| // search to the cursor. |
| const_iterator |
| begin = (0 == iCount ? _cursor : _frames.begin()), |
| end = (0 == iCount ? _frames.end() : _cursor); |
| // search from the cursor to the end |
| for (const_iterator cur = begin; cur != end; ++cur) |
| { |
| if ((*cur != NULL) && ((*cur)->GetID() == id)) |
| { |
| // We've found a valid frame. Set the cursor to be the next element |
| frame = *cur; |
| _cursor = ++cur; |
| break; |
| } |
| } |
| } |
| |
| return frame; |
| } |
| |
| ID3_Frame *ID3_TagImpl::Find(ID3_FrameID id, ID3_FieldID fldID, const char* data, ID3_TextEnc sourceEnc) const |
| { |
| ID3_Frame *frame = NULL; |
| ID3D_NOTICE( "Find: looking for comment with data = " << data.c_str() ); |
| |
| // reset the cursor if it isn't set |
| if (_frames.end() == _cursor) |
| { |
| _cursor = _frames.begin(); |
| ID3D_NOTICE( "Find: resetting cursor" ); |
| } |
| |
| for (int iCount = 0; iCount < 2 && frame == NULL; iCount++) |
| { |
| ID3D_NOTICE( "Find: iCount = " << iCount ); |
| // We want to cycle through the list to find the matching frame. We |
| // should begin from the cursor, search each successive frame, wrapping |
| // if necessary. The enclosing loop and the assignment statments below |
| // ensure that we first begin at the cursor and search to the end of the |
| // list and, if unsuccessful, start from the beginning of the list and |
| // search to the cursor. |
| const_iterator |
| begin = (0 == iCount ? _cursor : _frames.begin()), |
| end = (0 == iCount ? _frames.end() : _cursor); |
| // search from the cursor to the end |
| for (const_iterator cur = begin; cur != end; ++cur) |
| { |
| ID3D_NOTICE( "Find: frame = " << iCount << (uint32) *cur ); |
| if ((*cur != NULL) && ((*cur)->GetID() == id) && |
| (*cur)->Contains(fldID)) |
| { |
| ID3_Field* fld = (*cur)->GetField(fldID); |
| if (NULL == fld) |
| { |
| continue; |
| ID3D_NOTICE( "Find: didn't have the right field" ); |
| } |
| |
| if ( data == fld->GetText(sourceEnc) ) // bug, does only look in the first text item! |
| { |
| // We've found a valid frame. Set cursor to be the next element |
| frame = *cur; |
| _cursor = ++cur; |
| break; |
| } |
| } |
| } |
| } |
| |
| return frame; |
| } |
| |
| |
| ID3_Frame *ID3_TagImpl::Find(ID3_FrameID id, ID3_FieldID fldID, uint32 data) const |
| { |
| ID3_Frame *frame = NULL; |
| |
| // reset the cursor if it isn't set |
| if (_frames.end() == _cursor) |
| { |
| _cursor = _frames.begin(); |
| } |
| |
| for (int iCount = 0; iCount < 2 && frame == NULL; iCount++) |
| { |
| // We want to cycle through the list to find the matching frame. We |
| // should begin from the cursor, search each successive frame, wrapping |
| // if necessary. The enclosing loop and the assignment statments below |
| // ensure that we first begin at the cursor and search to the end of the |
| // list and, if unsuccessful, start from the beginning of the list and |
| // search to the cursor. |
| const_iterator |
| begin = (0 == iCount ? _cursor : _frames.begin()), |
| end = (0 == iCount ? _frames.end() : _cursor); |
| // search from the cursor to the end |
| for (const_iterator cur = begin; cur != end; ++cur) |
| { |
| if ((*cur != NULL) && ((*cur)->GetID() == id) && |
| ((*cur)->GetField(fldID)->Get() == data)) |
| { |
| // We've found a valid frame. Set the cursor to be the next element |
| frame = *cur; |
| _cursor = ++cur; |
| break; |
| } |
| } |
| } |
| |
| return frame; |
| } |
| |