201803-3 URL映射

  1 #include <bits/stdc++.h>
  2 
  3 using namespace std;
  4 const int N = 100 + 5;
  5 
  6 int n, m;
  7 vector<string> reg[N];
  8 vector<string> reg_name;
  9 
 10 void format_reg(int c, string & line)
 11 {
 12     stringstream ss(line);
 13     string name;
 14     ss >> line >> name;
 15     reg_name.push_back(name);
 16 
 17     for(int i = 0; i < (int)line.length(); i++) {
 18         if(line[i] == ‘/‘) {
 19             reg[c].push_back("/");
 20         }else {
 21             if(reg[c].back() == "/") {
 22                 reg[c].push_back(string(&line[i], &line[i] + 1));
 23             }else {
 24                 string & tmp = reg[c].back();
 25                 tmp += string(&line[i], &line[i] + 1);
 26             }
 27         }
 28     }
 29 }
 30 
 31 void url_split(string &url, vector<string> &urls)
 32 {
 33      for(int i = 0; i < url.length(); i++) {
 34         if(url[i] == ‘/‘) {
 35             urls.push_back("/");
 36         }else {
 37             if(urls.back() == "/") {
 38                 urls.push_back(string(&url[i], &url[i] + 1));
 39             }else {
 40                 string & tmp = urls.back();
 41                 tmp += string(&url[i], &url[i] + 1);
 42             }
 43         }
 44      }
 45 }
 46 bool is_int(string & s)
 47 {
 48     for(int i = s.length() - 1; i >= 0; i--) {
 49         if(!isdigit(s[i])) return false;
 50     }
 51     return true;
 52 }
 53 
 54 bool is_equal(string & regn, vector<string> & urls, vector<string> & param)
 55 {
 56 
 57     if(urls.size() == 0) return false;
 58     if(regn == urls.front()) {
 59         urls.erase(urls.begin());
 60         return true;
 61     }else if(regn == "<path>") {
 62         string tmp = "";
 63         for(int j = 0; j < (int)urls.size(); j++) {
 64             tmp += urls[j];
 65         }
 66         param.push_back(tmp);
 67         urls.clear();
 68         return true;
 69     }else if(regn == "<int>") {
 70         if(is_int(urls.front())) {
 71             param.push_back(urls.front());
 72             urls.erase(urls.begin());
 73             return true;
 74         }
 75         return false;
 76     }else if(regn == "<str>") {
 77         param.push_back(urls.front());
 78         urls.erase(urls.begin());
 79         return true;
 80     }
 81     return false;
 82 }
 83 
 84 bool match(const int &c, string url, vector<string> & param)
 85 {
 86     vector<string> urls;
 87     stringstream ss(url);
 88     url_split(url, urls);
 89 
 90     for(size_t i = 0; i < reg[c].size(); i++) {
 91         if(!is_equal(reg[c][i], urls, param)) return false;
 92         if(urls.size() == 0 && i == reg[c].size() - 1) return true;
 93     }
 94 
 95     return false;
 96 }
 97 
 98 void print_reg()
 99 {
100     for(int i = 0; i < n; i++) {
101         for(auto & tmp : reg[i]) cout << tmp << " ";
102         cout << endl;
103     }
104 }
105 
106 int get_result(string & url, vector<string> & param)
107 {
108 
109     for(int i = 0; i < n; i++) {
110         param.clear();
111         //cout << "---------------------------" << endl;
112         if(match(i, url, param)) return i;
113     }
114     return -1;
115 }
116 
117 int main()
118 {
119     cin >> n >> m;
120     cin.ignore();
121     string line;
122     for(int i = 0; i < n; i++) {
123         getline(cin, line);
124         format_reg(i, line);
125     }
126     //print_reg();
127 
128     vector<string> param;
129     for(int i = 0; i < m; i++) {
130         getline(cin, line);
131         int ans = get_result(line, param);
132         if(ans == -1) {
133             cout << 404 << endl;
134         }else {
135             cout << reg_name[ans]<< " ";
136             for(int i = 0; i < (int)param.size(); i++) {
137                 if(is_int(param[i])) {
138                     int ans = atoi(param[i].c_str());
139                     cout << ans << " ";
140                 }else
141                     cout << param[i] << " ";
142             }
143             cout << endl;
144         }
145     }
146 }