C++ file_info::meta_enum_value_count方法代码示例

bool file_info::g_is_meta_equal_debug(const file_info & p_item1,const file_info & p_item2) {
    const t_size count = p_item1.meta_get_count();
    if (count != p_item2.meta_get_count()) {
        uDebugLog() << "meta count mismatch";
        return false;
    }
    pfc::map_t<const char*,t_size,field_name_comparator> item2_meta_map;
    for(t_size n=0; n<count; n++) {
        item2_meta_map.set(p_item2.meta_enum_name(n),n);
    }
    for(t_size n1=0; n1<count; n1++) {
        t_size n2;
        if (!item2_meta_map.query(p_item1.meta_enum_name(n1),n2)) {
            uDebugLog() << "item2 doesn't have " << p_item1.meta_enum_name(n1);
            return false;
        }
        t_size value_count = p_item1.meta_enum_value_count(n1);
        if (value_count != p_item2.meta_enum_value_count(n2)) {
            uDebugLog() << "meta value count mismatch: " << p_item1.meta_enum_name(n1) << " : " << value_count << " vs " << p_item2.meta_enum_value_count(n2);
            return false;
        }
        for(t_size v = 0; v < value_count; v++) {
            if (strcmp(p_item1.meta_enum_value(n1,v),p_item2.meta_enum_value(n2,v)) != 0) {
                uDebugLog() << "meta mismatch: " << p_item1.meta_enum_name(n1) << " : " << p_item1.meta_enum_value(n1,v) << " vs " << p_item2.meta_enum_value(n2,v);
                return false;
            }
        }
    }
    return true;
}

static t_size merge_tags_calc_rating_by_index(const file_info & p_info,t_size p_index) {
	t_size n,m = p_info.meta_enum_value_count(p_index);
	t_size ret = 0;
	for(n=0;n<m;n++)
		ret += strlen(p_info.meta_enum_value(p_index,n)) + 10;//yes, strlen on utf8 data, plus a slight bump to prefer multivalue over singlevalue w/ separator
	return ret;
}

void stream_encoders::update_metadata(const file_info&p_info){
	metadata.remove_all();

	pfc::string artist,title;
    for (unsigned i=0;i<p_info.meta_get_count();i++) {
		pfc::string name = p_info.meta_enum_name(i);
		for (unsigned j=0;j<p_info.meta_enum_value_count(i);j++){
			pfc::string value = p_info.meta_enum_value(i,j);
			pfc::string buffer=name+"="+value;
			metadata.add_item(buffer);

			if(pfc::string::g_equalsCaseInsensitive(name,"artist"))
				artist=value;
			if(pfc::string::g_equalsCaseInsensitive(name,"title"))
				title=value;
		}
    }

	pfc::string meta=artist+" - "+title;
	for(unsigned i=0;i<enc_list.get_count();++i){
		strcpy(enc_list[i]->config->gSongTitle,(char*)meta.ptr());
		enc_list[i]->config->ice2songChange=true;
		updateSongTitle(enc_list[i]->config,0);
	}
}

void selection_properties_t::g_print_field(const char * field, const file_info & p_info, pfc::string_base & p_out)
{
	t_size meta_index = p_info.meta_find(field);
	if (meta_index != pfc_infinite)
	{
		t_size i, count = p_info.meta_enum_value_count(meta_index);
		for (i = 0; i < count; i++)
			p_out << p_info.meta_enum_value(meta_index, i) << (i + 1 < count ? "; " : "");

	}
}

void file_info::copy_meta_single_rename_ex(const file_info & p_source,t_size p_index,const char * p_new_name,t_size p_new_name_length)
{
    t_size n, m = p_source.meta_enum_value_count(p_index);
    t_size new_index = pfc_infinite;
    for(n=0; n<m; n++)
    {
        const char * value = p_source.meta_enum_value(p_index,n);
        if (n == 0) new_index = meta_set_ex(p_new_name,p_new_name_length,value,pfc_infinite);
        else meta_add_value(new_index,value);
    }
}

void file_info::copy_meta_single_nocheck(const file_info & p_source,t_size p_index)
{
    const char * name = p_source.meta_enum_name(p_index);
    t_size n, m = p_source.meta_enum_value_count(p_index);
    t_size new_index = pfc_infinite;
    for(n=0; n<m; n++)
    {
        const char * value = p_source.meta_enum_value(p_index,n);
        if (n == 0) new_index = meta_set_nocheck(name,value);
        else meta_add_value(new_index,value);
    }
}

static void strip_redundant_track_meta(unsigned p_tracknumber,const file_info & p_cueinfo,file_info_record::t_meta_map & p_meta,const char * p_metaname) {
	t_size metaindex = p_cueinfo.meta_find(p_metaname);
	if (metaindex == pfc_infinite) return;
	pfc::string_formatter namelocal;
	build_cue_meta_name(p_metaname,p_tracknumber,namelocal);
	{
		const file_info_record::t_meta_value * val = p_meta.query_ptr(namelocal);
		if (val == NULL) return;
		file_info_record::t_meta_value::const_iterator iter = val->first();
		for(t_size valwalk = 0, valcount = p_cueinfo.meta_enum_value_count(metaindex); valwalk < valcount; ++valwalk) {
			if (iter.is_empty()) return;
			if (strcmp(*iter,p_cueinfo.meta_enum_value(metaindex,valwalk)) != 0) return;
			++iter;
		}
		if (!iter.is_empty()) return;
	}
	//success
	p_meta.remove(namelocal);
}

void file_info_const_impl::copy(const file_info & p_source)
{
//	profiler(file_info_const_impl__copy);
	t_size meta_size = 0;
	t_size info_size = 0;
	t_size valuemap_size = 0;
	t_size stringbuffer_size = 0;
#ifdef __file_info_const_impl_have_hintmap__
	t_size hintmap_size = 0;
#endif

	{
//		profiler(file_info_const_impl__copy__pass1);
		t_size index;
		m_meta_count = pfc::downcast_guarded<t_index>(p_source.meta_get_count());
		meta_size = m_meta_count * sizeof(meta_entry);
#ifdef __file_info_const_impl_have_hintmap__
		hintmap_size = (m_meta_count > hintmap_cutoff) ? m_meta_count * sizeof(t_index) : 0;
#endif//__file_info_const_impl_have_hintmap__
		for(index = 0; index < m_meta_count; index++ )
		{
			{
				const char * name = p_source.meta_enum_name(index);
				if (optimize_fieldname(name) == 0)
					stringbuffer_size += strlen(name) + 1;
			}

			t_size val; const t_size val_max = p_source.meta_enum_value_count(index);
			
			if (val_max == 1)
			{
				stringbuffer_size += strlen(p_source.meta_enum_value(index,0)) + 1;
			}
			else
			{
				valuemap_size += val_max * sizeof(char*);

				for(val = 0; val < val_max; val++ )
				{
					stringbuffer_size += strlen(p_source.meta_enum_value(index,val)) + 1;
				}
			}
		}

		m_info_count = pfc::downcast_guarded<t_index>(p_source.info_get_count());
		info_size = m_info_count * sizeof(info_entry);
		for(index = 0; index < m_info_count; index++ )
		{
			const char * name = p_source.info_enum_name(index);
			if (optimize_infoname(name) == NULL) stringbuffer_size += strlen(name) + 1;
			stringbuffer_size += strlen(p_source.info_enum_value(index)) + 1;
		}
	}


	{
//		profiler(file_info_const_impl__copy__alloc);
		m_buffer.set_size(
#ifdef __file_info_const_impl_have_hintmap__
			hintmap_size + 
#endif
			meta_size + info_size + valuemap_size + stringbuffer_size);
	}

	char * walk = m_buffer.get_ptr();

#ifdef __file_info_const_impl_have_hintmap__
	t_index* hintmap = (hintmap_size > 0) ? (t_index*) walk : NULL;
	walk += hintmap_size;
#endif
	meta_entry * meta = (meta_entry*) walk;
	walk += meta_size;
	char ** valuemap = (char**) walk;
	walk += valuemap_size;
	info_entry * info = (info_entry*) walk;
	walk += info_size;
	char * stringbuffer = walk;

	m_meta = meta;
	m_info = info;
#ifdef __file_info_const_impl_have_hintmap__
	m_hintmap = hintmap;
#endif

	{
//		profiler(file_info_const_impl__copy__pass2);
		t_size index;
		for( index = 0; index < m_meta_count; index ++ )
		{
			t_size val; const t_size val_max = p_source.meta_enum_value_count(index);

			{
				const char * name = p_source.meta_enum_name(index);
				const char * name_opt = optimize_fieldname(name);
				if (name_opt == NULL)
					meta[index].m_name = stringbuffer_append(stringbuffer, name );
				else
					meta[index].m_name = name_opt;
			}
			
//.........这里部分代码省略.........

void embeddedcue_metadata_manager::set_tag(file_info const & p_info) {
	m_content.remove_all();
	
	{
		track_record & track0 = m_content.find_or_add((unsigned)0);
		track0.m_info.from_info(p_info);
		track0.m_info.m_info.set("cue_embedded","no");
	}
	
	

	const char * cuesheet = p_info.meta_get("cuesheet",0);
	if (cuesheet == NULL) {
		return;
	}

	//processing order
	//1. cuesheet content
	//2. overwrite with global metadata from the tag
	//2. overwrite with local metadata from the tag

	{
		cue_creator::t_entry_list entries;
		try {
			cue_parser::parse_full(cuesheet,entries);
		} catch(exception_io_data const & e) {
			console::print(e.what());
			return;
		}

		for(cue_creator::t_entry_list::const_iterator iter = entries.first(); iter.is_valid(); ) {
			cue_creator::t_entry_list::const_iterator next = iter;
			++next;
			track_record & entry = m_content.find_or_add(iter->m_track_number);
			entry.m_file = iter->m_file;
			entry.m_flags = iter->m_flags;
			entry.m_index_list = iter->m_index_list;
			entry.m_info.from_info(iter->m_infos);
			entry.m_info.from_info_overwrite_info(p_info);
			entry.m_info.m_info.set("cue_embedded","yes");
			double begin = entry.m_index_list.start(), end = next.is_valid() ? next->m_index_list.start() : p_info.get_length();
			if (end <= begin) throw exception_io_data();
			entry.m_info.set_length(end - begin);
			iter = next;
		}
	}
	
	for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
		const char * name = p_info.meta_enum_name(metawalk);
		const t_size valuecount = p_info.meta_enum_value_count(metawalk);
		if (valuecount > 0 && !is_reserved_meta_entry(name) && is_global_meta_entry(name)) {
			__set_tag_global_field_relay relay(p_info,metawalk);
			m_content.enumerate(relay);
		}
	}

	{
		pfc::string8_fastalloc namebuffer;
		for(t_size metawalk = 0, metacount = p_info.meta_get_count(); metawalk < metacount; ++metawalk) {
			const char * name = p_info.meta_enum_name(metawalk);
			const t_size valuecount = p_info.meta_enum_value_count(metawalk);
			unsigned trackno;
			if (valuecount > 0 && !is_reserved_meta_entry(name) && resolve_cue_meta_name(name,namebuffer,trackno)) {
				track_record * rec = m_content.query_ptr(trackno);
				if (rec != NULL) {
					rec->m_info.transfer_meta_entry(namebuffer,p_info,metawalk);
				}
			}
		}
	}
}