plugins/janacontrol/janaJSON.h

0001
0002 // Copyright 2020, Jefferson Science Associates, LLC.
0003 // Subject to the terms in the LICENSE file found in the top-level directory.
0004
0005 #include <sstream>
0006 #include <vector>
0007 #include <string>
0008 #include <map>
0009
0010 #include <JANA/JObject.h>
0011
0012
0013 // Generic (double, float, int, uint64_t, ...)
0014 template <typename T>
0015 void JJSON_Add(std::stringstream &ss, const T &t, int &indent_level){
0016     ss << std::string(indent_level*2, ' ') << t;
0017 }
0018
0019 // std::string
0020 //template <typename T>
0021 void JJSON_Add(std::stringstream &ss, const std::string &s, int &indent_level){
0022     // Next 3 lines decide whether to put quotes around string
0023     bool has_whitespace = s.find_first_not_of("\t\n ") != string::npos;
0024     bool is_json = s.find_first_not_of("{[\t\n ") != 0;
0025     std::string quote = ((has_whitespace && !is_json) || s.empty()) ? "\"":"";
0026     ss << std::string(indent_level*2, ' ') << quote << s << quote;
0027 }
0028
0029 // std::vector
0030 template <typename T>
0031 void JJSON_Add(std::stringstream &ss, const std::vector<T> &V, int &indent_level){
0032
0033     ss << std::string(indent_level*2, ' ') << "[\n";
0034     indent_level++;
0035     auto items_left = V.size();
0036     for( auto v : V){
0037         JJSON_Add(ss, v, indent_level);
0038         if(--items_left != 0) ss << ",";
0039         ss << "\n";
0040     }
0041     indent_level--;
0042     ss << std::string(indent_level*2, ' ') << "]";
0043 }
0044
0045 // std::map
0046 template <typename T>
0047 void JJSON_Add(std::stringstream &ss, const std::map<std::string, T> &M, int &indent_level){
0048
0049     ss << std::string(indent_level*2, ' ') << "{\n";
0050     indent_level++;
0051     auto items_left = M.size();
0052     for( auto p : M){
0053         ss << std::string(indent_level*2, ' ') << "\"" << p.first << "\":";
0054         JJSON_Add(ss, p.second, indent_level);
0055         if(--items_left != 0) ss << ",";
0056         ss << "\n";
0057     }
0058     indent_level--;
0059     ss << std::string(indent_level*2, ' ') << "}";
0060 }
0061 // std::unordered_map
0062 template <typename T>
0063 void JJSON_Add(std::stringstream &ss, const std::unordered_map<std::string, T> &M, int &indent_level){
0064
0065     ss << std::string(indent_level*2, ' ') << "{\n";
0066     indent_level++;
0067     auto items_left = M.size();
0068     for( auto p : M){
0069         ss << std::string(indent_level*2, ' ') << "\"" << p.first << "\":";
0070         JJSON_Add(ss, p.second, indent_level);
0071         if(--items_left != 0) ss << ",";
0072         ss << "\n";
0073     }
0074     indent_level--;
0075     ss << std::string(indent_level*2, ' ') << "}";
0076 }
0077
0078 // JObjectSummary
0079 void JJSON_Add(std::stringstream &ss, const JObjectSummary &jobj_summary, int &indent_level) {
0080     auto fields = jobj_summary.get_fields();
0081     JJSON_Add(ss, fields, indent_level);
0082 }
0083
0084 // JObjectMember
0085 void JJSON_Add(std::stringstream &ss, const JObjectMember &jobj_member, int &indent_level) {
0086     std::unordered_map<std::string, std::string> vals;
0087     vals["name"] = jobj_member.name;
0088     vals["type"] = jobj_member.type;
0089     vals["value"] = jobj_member.value;
0090     JJSON_Add(ss, vals, indent_level);
0091 }
0092
0093 template<typename T>
0094 std::string JJSON_Create(const T &t, int indent_level = 0){
0095     std::stringstream ss;
0096     JJSON_Add(ss, t, indent_level);
0097     return ss.str();
0098 }