1 files changed, 14 insertions, 26 deletions

diff --git a/host/lib/usrp/multi_usrp.cpp b/host/lib/usrp/multi_usrp.cpp
index 182e774fc..d8322a39f 100644
--- a/host/lib/usrp/multi_usrp.cpp
+++ b/host/lib/usrp/multi_usrp.cpp
@@ -35,14 +35,20 @@ using namespace uhd::usrp;
 
 const std::string multi_usrp::ALL_GAINS = "";
 
-UHD_INLINE std::string string_vector_to_string(std::vector<std::string> values, std::string delimeter = std::string(" "))
+UHD_INLINE std::string string_vector_to_string(std::vector<std::string> values, std::string delimiter = std::string(" "))
 {
     std::string out = "";
     for (std::vector<std::string>::iterator iter = values.begin(); iter != values.end(); iter++)
-        out += delimeter + *iter;
+    {
+        out += (iter != values.begin() ? delimiter : "") + *iter;
+    }
     return out;
 }
 
+#define THROW_GAIN_NAME_ERROR(name,chan,dir) throw uhd::exception::runtime_error( \
+            (boost::format("%s: gain \"%s\" not found for channel %d.\nAvailable gains: %s\n") % \
+            __FUNCTION__ % name % chan % string_vector_to_string(get_##dir##_gain_names(chan))).str());
+
 /***********************************************************************
  * Helper methods
  **********************************************************************/
@@ -671,10 +677,7 @@ public:
         try {
             return rx_gain_group(chan)->set_value(gain, name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,rx);
         }
     }
 
@@ -682,10 +685,7 @@ public:
         try {
             return rx_gain_group(chan)->get_value(name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,rx);
         }
     }
 
@@ -693,10 +693,7 @@ public:
         try {
             return rx_gain_group(chan)->get_range(name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,rx);
         }
     }
 
@@ -861,10 +858,7 @@ public:
         try {
             return tx_gain_group(chan)->set_value(gain, name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,tx);
         }
     }
 
@@ -872,10 +866,7 @@ public:
         try {
             return tx_gain_group(chan)->get_value(name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,tx);
         }
     }
 
@@ -883,10 +874,7 @@ public:
         try {
             return tx_gain_group(chan)->get_range(name);
         } catch (uhd::key_error &e) {
-            std::stringstream err;
-            err << __FUNCTION__ << "(\"" << name << "\"): gain not found.\n" <<
-                "Available gains: " << string_vector_to_string(get_rx_gain_names(chan)) << std::endl;
-            throw uhd::exception::runtime_error(err.str());
+            THROW_GAIN_NAME_ERROR(name,chan,tx);
         }
     }