Django自定义装饰器重定向问题(Django custom decorator redirect problem)

 听起来你正在尝试进行非常复杂的地图查找。 这不行吗？ 
 
    const string & getColor(string command, const map<string, string> & m)
    {
        map<string,string>::const_iterator i = m.find(command);
        return i == m.end() ? BLACK : i->second;
    }
 
 当然，这并没有解决所谓的相等字符串而不是比较平等的问题。 我想你需要为我们发布一个更完整的例子才能回答这个问题。 但关于嵌入式空字符的第一个答案是错误的。 你拥有的是嵌入式转义字符，这是完全正确的。 我唯一要做的就是使用const char * RED =等而不是#defines，因为变量比宏更容易处理。 
 
 编辑：似乎我在这里指的答案消失了。 
 
 编辑2：这与你想要做的相比如何？ 它对我有用，至少： 
 
    #include <cstdio>
    #include <string>
    #include <iostream>
    #include <sstream>
    #include <map>
    using namespace std;

    #define BLACK "\033[22;30m"
    #define RED "\033[22;31m"
    #define GREEN "\033[22;32m"

    const string & getColor(const string & command, const map<string, string> & m)
    {
        map<string,string>::const_iterator i = m.find(command);
        return i == m.end() ? BLACK : i->second;
    }

    int main() {
        map<string,string> cols;
        cols["BLACK"] = BLACK;
        cols["RED"]   = RED;
        cols["GREEN"] = GREEN;

        string line, cmd, val;
        while(getline(cin, line))
        {
            stringstream ss(line);
            if(ss >> cmd >> val && cmd == "color:")
                cout << getColor(val, cols);
            else cout << line << endl;
        }
    }
 
 输入 
 
This text is default color
color: RED
This text is red
color: GREEN
This text is green
 
 应该产生指示的颜色。 
 
 编辑3：根据您的新信息，似乎真正的问题是您的配置文件包含不包含实际转义字符，只包含字符'\'和'e'。 确保您的文件实际包含真正的转义字符。 如何生成这些因编辑器而异。 在vim中，您可以通过执行ctrl-V然后执行escape来键入转义。 在最坏的情况下，你可以通过从你自己的C程序打印它们来生成它 - 毕竟你已经有了定义： fprintf(conffile, "bold %s\n", BOLD) 。 

It sounds like you are trying to do a very complicated map lookup. Wouldn't this work?
 
    const string & getColor(string command, const map<string, string> & m)
    {
        map<string,string>::const_iterator i = m.find(command);
        return i == m.end() ? BLACK : i->second;
    }
 
Of course, this does not address the issue of supposedly equal strings not comparing equal. You will need to post a more complete example for us to be able to answer that, I think. But the first answer about embedded null characters is mistaken. What you have is embedded escape characters, which is fully correct. The only thing I would do different there is to use const char * RED = etc. instead of #defines, since variables are easier to deal with than macros.
 
Edit: Seems like the answer I was referring to here disappeared.
 
Edit2: How does this compare to what you are trying to do? It works for me, at least:
 
    #include <cstdio>
    #include <string>
    #include <iostream>
    #include <sstream>
    #include <map>
    using namespace std;

    #define BLACK "\033[22;30m"
    #define RED "\033[22;31m"
    #define GREEN "\033[22;32m"

    const string & getColor(const string & command, const map<string, string> & m)
    {
        map<string,string>::const_iterator i = m.find(command);
        return i == m.end() ? BLACK : i->second;
    }

    int main() {
        map<string,string> cols;
        cols["BLACK"] = BLACK;
        cols["RED"]   = RED;
        cols["GREEN"] = GREEN;

        string line, cmd, val;
        while(getline(cin, line))
        {
            stringstream ss(line);
            if(ss >> cmd >> val && cmd == "color:")
                cout << getColor(val, cols);
            else cout << line << endl;
        }
    }
 
The input
 
This text is default color
color: RED
This text is red
color: GREEN
This text is green
 
should produce the colors indicated.
 
Edit3: In light of your new information, it seems like the real problem is that your config file contains does not contain actual escape characters, just the characters '\' and 'e'. Make sure your file actually contains real escape characters. How to generate these varies from editor to editor. In vim, you would type an escape by doing ctrl-V followed by escape. In the worst case, you can generate this by printing them from your own C program - you already have the defines, after all: fprintf(conffile, "bold %s\n", BOLD).