Adding TIC::Horodate::addSeconds()

include/TIC/DatasetView.h

@@ -41,6 +41,14 @@ class Horodate {
 
     static Horodate fromLabelBytes(const uint8_t* bytes, unsigned int count);
 
+    /**
+     * @brief Make the current horodate go forward a given seconds in time
+     * 
+     * @param seconds The seconds to add
+     * @return true if the result is in the same day as the original value, false otherwise (in that case, the current horodate is *not* modified, calculation in cancelled)
+     */
+    bool addSeconds(unsigned int seconds);
+
 private:
     /**
      * @brief Comparison of timestamps with another horodate
@@ -128,4 +136,11 @@ class DatasetView {
     unsigned int dataSz; /*!< The size of the label in bytes */
     Horodate horodate; /*!< The horodate for this dataset */
 };
-} // namespace TIC
+} // namespace TIC
+
+#ifdef __TIC_LIB_USE_STD_STRING__
+/* std::to_string() for Horodate */
+namespace std {
+    std::string to_string(const TIC::Horodate& horodate);
+}
+#endif

src/TIC/DatasetView.cpp

@@ -70,6 +70,28 @@ TIC::Horodate TIC::Horodate::fromLabelBytes(const uint8_t* bytes, unsigned int c
     return result;
 }
 
+bool TIC::Horodate::addSeconds(unsigned int seconds) {
+    uint8_t initialSecond = this->second;
+    uint8_t initialMinute = this->minute;
+    uint8_t initialHour = this->hour;
+    this->second+=30; /* Forward in time */
+    if (this->second < 60)
+        return true;
+    this->second = 0;
+    this->minute++;
+    if (this->minute < 60)
+        return true;
+    this->minute = 0;
+    this->hour++;
+    if (this->hour < 24)
+        return true;
+    /* Day overflow, cancel calculation, reset to initial values */
+    this->hour = initialHour;
+    this->minute = initialMinute;
+    this->second = initialSecond;
+    return false;
+}
+
 int TIC::Horodate::timeStampOnlyCmp(const TIC::Horodate& other) const {
     if (this->year > other.year) return 1;
     if (this->year < other.year) return -1;