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annotate c/utils.cpp @ 686:cdee6a3a47b4 dev
allowing alternate database and filename for classify-objects
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Tue, 09 Jun 2015 17:29:03 +0200 |
parents | c389fae9689a |
children | bee0e7407af7 |
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1 #include "utils.hpp" |
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2 |
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3 #include <boost/foreach.hpp> |
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4 |
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5 #include <iostream> |
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6 #include <fstream> |
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7 #include <sstream> |
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8 |
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9 using namespace std; |
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11 std::vector<std::vector<float> > loadNumbers(const string& filename, const string& separator /* = " " */) { |
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12 ifstream in(filename.c_str()); |
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13 std::vector<std::vector<float> > result; |
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14 |
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15 if (::openCheck(in, filename, "loadNumbers")) { |
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16 while (!in.eof()) { |
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17 string line = ::getlineComment(in); |
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18 std::vector<string> tokens; |
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19 ::split(tokens, line, separator); |
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20 std::vector<float> numbers; |
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21 BOOST_FOREACH(string s, tokens) |
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22 numbers.push_back(::toFloat(s)); |
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23 if (!numbers.empty()) |
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24 result.push_back(numbers); |
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25 } |
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26 } |
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27 |
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28 return result; |
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29 } |
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30 |
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31 int toInt(const std::string& s) { int i; fromString(i, s); return i;} //atoi |
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32 |
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33 float toFloat(const std::string& s) { float x; fromString(x, s); return x;}// lexical_cast<float>(s) |
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34 |
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35 double toDouble(const std::string& s) { double x; fromString(x, s); return x;} |
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36 |
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37 string getlineComment(ifstream& f) { |
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38 string s; |
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39 getline(f, s); |
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40 while ((!f.eof()) && (s[0] == ::commentChar)) { |
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41 getline(f, s); |
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42 } |
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43 |
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44 if (!s.empty() && s[0] == ::commentChar) |
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45 s.clear(); |
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46 return s; |
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47 } |
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48 |
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49 void openWriteScientificPrecision(ofstream& out, const string& filename, const int& precision) { |
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50 ::openWritePrecision(out, filename, precision); |
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51 out.setf(ios::scientific); |
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52 } |
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53 |
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54 void openWritePrecision(ofstream& out, const string& filename, const int& precision) { |
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55 out.open(filename.c_str(), ios::binary); |
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56 ::openCheck(out, filename, "openWritePrecision"); |
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57 out.precision(precision); |
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58 } |
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59 |
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60 bool openCheck(ifstream& f, const string& filename, const string& callingFunctionName) { |
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61 if (!f.is_open()) { |
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62 cerr << "Pb opening file " << filename << " in " << callingFunctionName << endl; |
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63 return false; |
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64 } else |
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65 return true; |
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66 } |
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67 |
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68 bool openCheck(ofstream& f, const string& filename, const string& callingFunctionName) { |
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69 if (!f.is_open()) { |
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70 cerr << "Pb opening file " << filename << " in " << callingFunctionName << endl; |
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71 return false; |
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72 } else |
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73 return true; |
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74 } |