.. _program_listing_file_lib_Indicator.cpp:

Program Listing for File Indicator.cpp
======================================

|exhale_lsh| :ref:`Return to documentation for file <file_lib_Indicator.cpp>` (``lib/Indicator.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include <fmt/format.h>
   #include <sqlite3.h>
   #include <string>
   #include <vector>
   #include <iostream>
   #include "Indicator.hpp"
   #include <range/v3/all.hpp>
   
   using namespace std;
   namespace rs = ranges;
   
   void Indicator::set_default_unit() {
     // TODO: Repeated code block
     // An exact copy of the method AnalysisGraph::open_delphi_db()
     // defined in database.cpp
     // vvvvvvvvvvvvvvvvvvvvvvvvv
     char* pPath;
     pPath = getenv ("DELPHI_DB");
     if (pPath == NULL) {
       cout << "\n\nERROR: DELPHI_DB environment variable containing the path to delphi.db is not set!\n\n";
       exit(1);
     }
   
     sqlite3* db = nullptr;
     if (sqlite3_open_v2(getenv("DELPHI_DB"), &db, SQLITE_OPEN_READONLY, NULL) != SQLITE_OK) {
       cout << "\n\nERROR: delphi.db does not exist at " << pPath << endl;
       cout << sqlite3_errmsg(db) << endl;
       exit(1);
     }
     // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     // TODO: End repeated code block
   
     vector<string> units;
     sqlite3_stmt* stmt;
     string query =
         "select Unit from indicator where `Variable` like '" + name + "'";
     int rc = sqlite3_prepare_v2(db, query.c_str(), -1, &stmt, NULL);
     while ((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
       string ind_unit =
           string(reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)));
       units.push_back(ind_unit);
     }
     if (!units.empty()) {
       rs::sort(units);
       this->unit = units.front();
     }
     else {
       cerr << "Error: Indicator::set_indicator_default_unit()\n"
            << "\tIndicator: No data exists for " << name << endl;
     }
     sqlite3_finalize(stmt);
     sqlite3_close(db);
   }