function [Type, Name, Column] = SelectConnection(tag, map)
%GET_CONNECTION 读取信号连接信息
%   type为信号连接类型:
%   's'-连接至软件注入点
%   'p'-连接至物理注入点
%   'v'-连接至变量
%   'a'-连接至数组
%   'n'-无效连接
Type = 'n';
Name = '';
Column = 0;
for i = 1:length(map)
    if strcmp(tag, map(i).from)
        if isa(map(i).to, 'char')
            Type = 'v';
            Name = map(i).to;
        elseif isa(map(i).to, 'struct')
            if strcmp(map(i).to.type, 'port')
                if strcmp(map(i).to.spec, 'software')
                    Type = 's';
                    Name = map(i).to.channel;
                elseif strcmp(map(i).to.spec, 'physical')
                    Type = 'p';
                    Name = map(i).to.channel;
                end
            elseif strcmp(map(i).to.type, "array")
                Type = 'a';
                Name = map(i).to.name;
                Column = map(i).to.column;
            end
        end
        break;
    end
end