new function 'decode()'

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@754 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 23 insertions, 0 deletions

diff --git a/plugin_math.c b/plugin_math.c
index b74f188..c3748e1 100644
--- a/plugin_math.c
+++ b/plugin_math.c
@@ -114,6 +114,26 @@ static void my_ceil(RESULT * result, RESULT * arg)
     SetResult(&result, R_NUMBER, &value);
 }
 
+static void my_decode(RESULT * result, int argc, RESULT * argv[])
+{
+    int index;
+    
+    if (argc < 2) {
+	error("decode(): wrong number of parameters");
+	SetResult(&result, R_STRING, "");
+	return;
+    }
+
+    index = R2N(argv[0]);
+    
+    if (index < 0 || index >= argc-1) {
+	SetResult(&result, R_STRING, "");
+	return;
+    }
+    
+    CopyResult (&result, argv[index+1]);
+}
+
 
 int plugin_init_math(void)
 {
@@ -138,6 +158,9 @@ int plugin_init_math(void)
     AddFunction("floor", 1, my_floor);
     AddFunction("ceil", 1, my_ceil);
 
+    /* decode */
+    AddFunction("decode", -1, my_decode);
+
     return 0;
 }