[CTRLRFC-1594] Apply memorized dynamic attributes at init

See CTRLRFC-1594

src/SingleShotAO.cpp

@@ -368,6 +368,7 @@ void SingleShotAO::init_device()
 		return;
 	}
 
+
 	// add dynamic attributes: channel, speed & initial for each channel
   	std::vector<yat4tango::DynamicAttributeInfo> l_dynAttrList;
 	for (unsigned int l_cpt = 0; l_cpt < m_nb_chan; l_cpt++)
@@ -476,9 +477,9 @@ void SingleShotAO::init_device()
 		
     	l_dynAttrList.push_back(dai_initial);
 	}
-
   	m_dyn_attr_manager->add_attributes(l_dynAttrList);
 
+
 	// Get memorized values from database
 	for (unsigned int l_cpt = 0; l_cpt < m_nb_chan; l_cpt++)
 	{
@@ -757,21 +758,37 @@ Tango::ConstDevString SingleShotAO::dev_status()
 
 //+------------------------------------------------------------------
 /**
- * Extract the first number found in a string.
- * Used for extracting the channel number from dynamic attribute names
- * like "channelX", "speedX", "initialX" where X is the channel number.
+ * Extract the number from a dynamic attribute name with a specific prefix.
+ * Used for parsing dynamic attribute names like "channelX", "speedX", "initialX"
+ * where X is the channel number.
  * 
  * @param str The input string to search for numbers
- * @return The first number found in the string
- * @throws DevFailed if no number is found in the string
+ * @param prefix The expected prefix (e.g., "channel", "speed", "initial")
+ * @return The number found after the prefix
+ * @throws DevFailed if string doesn't start with prefix or no number is found
  */
-int extractNumber(const std::string &str)
+int extractNumber(const std::string &str, const char* prefix) 
 {
-	size_t pos = str.find_first_of("0123456789");
-	if (pos == std::string::npos)
-		raise_error("No number found in string", "extractNumber");
+	// Validate string starts with the given prefix
+	if (str.find(prefix) != 0)
+	{
+		THROW_DEVFAILED("DEVICE_ERROR",
+			"String must start with the expected prefix",
+			"SingleShotAO::extractNumber");
+	}
 
+	// Find first digit after the prefix
+	size_t pos = strlen(prefix);
+
+	// Extract and convert the number 
 	std::string numberStr = str.substr(pos);
+	if (numberStr.empty() || !isdigit(numberStr[0]))
+	{
+		THROW_DEVFAILED("DEVICE_ERROR",
+			"No number found after prefix",
+			"SingleShotAO::extractNumber");
+	}
+
 	return std::stoi(numberStr);
 }
 
@@ -787,7 +804,7 @@ void SingleShotAO::read_channel(yat4tango::DynamicAttributeReadCallbackData & cb
 {
 	yat::AutoMutex<> guard(m_lock);
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kCHANNEL); // extract channel nb
 
     CHECK_MANAGER();
 	double l_val = m_manager->get_channel(l_idx);
@@ -809,7 +826,7 @@ void SingleShotAO::write_channel(yat4tango::DynamicAttributeWriteCallbackData &
 	cbd.tga->get_write_value(l_val);
 
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kCHANNEL); // extract channel nb
 
     CHECK_MANAGER();
 	try
@@ -846,7 +863,7 @@ void SingleShotAO::read_speed(yat4tango::DynamicAttributeReadCallbackData & cbd)
 {
 	yat::AutoMutex<> guard(m_lock);
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kSPEED); // extract channel nb
 
     CHECK_MANAGER();
 	double l_val = m_manager->get_speed(l_idx);
@@ -870,7 +887,7 @@ void SingleShotAO::write_speed(yat4tango::DynamicAttributeWriteCallbackData & cb
 	cbd.tga->get_write_value(l_val);
 
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kSPEED); // extract channel nb
 	if (l_val < 0)
 	{
 		l_val = -l_val;
@@ -912,7 +929,7 @@ void SingleShotAO::read_initial(yat4tango::DynamicAttributeReadCallbackData & cb
 {
 	yat::AutoMutex<> guard(m_lock);
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kINITIAL); // extract channel nb
 
 	CHECK_MANAGER();
 	double l_val = m_manager->get_initial(l_idx);
@@ -936,7 +953,7 @@ void SingleShotAO::write_initial(yat4tango::DynamicAttributeWriteCallbackData &
 	cbd.tga->get_write_value(l_val);
 
 	std::string l_attr_name = cbd.dya->get_name();
-	yat::uint16 l_idx = extractNumber(l_attr_name); // extract channel nb
+	yat::uint16 l_idx = extractNumber(l_attr_name, kINITIAL); // extract channel nb
 
 	CHECK_MANAGER();
 	try