From 9b9bc8a81ad303ffb1e5eef12f34702b2aceef60 Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周三, 22 4月 2015 03:52:29 +0800
Subject: [PATCH] Support RESPONSE MESSAGE UNIT SEPARATOR, issue #21

---
 libscpi/src/parser.c    |   26 +++++++++++++++++++++++---
 libscpi/test/test_lib.c |   13 +++++++++++--
 2 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/libscpi/src/parser.c b/libscpi/src/parser.c
index 49080ff..f437018 100644
--- a/libscpi/src/parser.c
+++ b/libscpi/src/parser.c
@@ -192,6 +192,19 @@
 }
 
 /**
+ * Conditionaly write ";"
+ * @param context
+ * @return number of characters written
+ */
+static size_t writeSemicolon(scpi_t * context) {
+    if (context->output_count > 0) {
+        return writeData(context, ";", 1);
+    } else {
+        return 0;
+    }
+}
+
+/**
  * Process command
  * @param context
  */
@@ -199,6 +212,10 @@
     const scpi_command_t * cmd = context->paramlist.cmd;
 
     context->cmd_error = FALSE;
+
+    /* conditionaly write ; */
+    writeSemicolon(context);
+
     context->output_count = 0;
     context->input_count = 0;
 
@@ -209,9 +226,6 @@
             SCPI_ErrorPush(context, SCPI_ERROR_EXECUTION_ERROR);
         }
     }
-
-    /* conditionaly write new line */
-    writeNewLine(context);
 
     /* skip all whitespaces */
     paramSkipWhitespace(context);
@@ -266,6 +280,8 @@
         return -1;
     }
 
+    context->output_count = 0;
+
     while (cmdline_ptr < cmdline_end) {
         result = 0;
         cmd_len = cmdTerminatorPos(cmdline_ptr, cmdline_end - cmdline_ptr);
@@ -285,6 +301,10 @@
         cmdline_ptr += skipCmdLine(cmdline_ptr, cmdline_end - cmdline_ptr);
         cmdline_ptr += skipWhitespace(cmdline_ptr, cmdline_end - cmdline_ptr);
     }
+
+    /* conditionaly write new line */
+    writeNewLine(context);
+
     return result;
 }
 
diff --git a/libscpi/test/test_lib.c b/libscpi/test/test_lib.c
index 186cecd..2834582 100644
--- a/libscpi/test/test_lib.c
+++ b/libscpi/test/test_lib.c
@@ -213,6 +213,12 @@
     TEST_INPUT("*IDN?\r\n*IDN?\r\n*IDN?\r\n*IDN?\r\n", "MA, IN, 0, VER\r\nMA, IN, 0, VER\r\nMA, IN, 0, VER\r\nMA, IN, 0, VER\r\n");
     output_buffer_clear();
 
+    TEST_INPUT("*IDN?;*IDN?;*IDN?;*IDN?\r\n", "MA, IN, 0, VER;MA, IN, 0, VER;MA, IN, 0, VER;MA, IN, 0, VER\r\n");
+    output_buffer_clear();
+
+    TEST_INPUT("*IDN?;*OPC;*IDN?\r\n", "MA, IN, 0, VER;MA, IN, 0, VER\r\n");
+    output_buffer_clear();
+
     /* Test one command in multiple buffers */
     TEST_INPUT("*IDN?", "");
     TEST_INPUT("\r\n", "MA, IN, 0, VER\r\n");
@@ -224,7 +230,10 @@
     output_buffer_clear();
     
     /* Test ctree traversal */
-    TEST_INPUT("TEST:TREEA?;TREEB?\r\n", "10\r\n20\r\n");
+    TEST_INPUT("TEST:TREEA?;TREEB?\r\n", "10;20\r\n");
+    output_buffer_clear();
+
+    TEST_INPUT("TEST:TREEA?;:TEXT? \"PARAM1\", \"PARAM2\"\r\n", "10;\"PARAM2\"\r\n");
     output_buffer_clear();
 
     CU_ASSERT_EQUAL(err_buffer_pos, 0);
@@ -279,7 +288,7 @@
 
     TEST_IEEE4882("*SRE 0xFF\r\n", "");
     TEST_IEEE4882("*SRE?\r\n", "255\r\n");
-    TEST_IEEE4882("*STB?\r\n", "0\r\n"); 
+    TEST_IEEE4882("*STB?\r\n", "0\r\n");
     TEST_IEEE4882("*ESR?\r\n", "1\r\n");
     
     srq_val = 0;

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