Update require text.

[command.git] / include / option.h

diff --git a/include/option.h b/include/option.h
index a77d8f446d19f179b9799ae5f7393d23c4240042..935914e86112dca86c6e8bf5fad935785773c843 100644 (file)
--- a/include/option.h
+++ b/include/option.h
@@ -10,7 +10,7 @@
 namespace command {
     /**
      * Class responsible for handling commandline options.
-     * Options are non-required, named parameters of program.
+     * Options are named parameters of program.
      *
      * Example:
      *  ./myprog OptionName=OptionValue
@@ -26,16 +26,13 @@ namespace command {
         /**
          * Current Option name
          */
-        OptionName name;
+        const OptionName name;
 
         /**
          * Current Option value
          */
         OptionType value;
 
-        /** Variable indicating if current Option was already used or not */
-        bool used = false;
-
     public:
         /**
          * Default constructor.
@@ -44,7 +41,7 @@ namespace command {
          * @param description Description of current Option
          * @param function Function used to handle current Option.
          */
-        Option(std::string name, const std::string & description, void (*function)(OptionType))
+        Option(const std::string & name, const std::string & description, void (*function)(OptionType))
             : Parameter(description), Callable<OptionType>(function), name(name) {
         }
 
@@ -87,18 +84,21 @@ namespace command {
          * @throw std::invalid_argument when OptionValue part failed conversion
          *  to OptionType
          */
-        virtual bool understand(const std::string & argv) {
-            if ((!used) &&
-                (argv.find(name) == 0)) {
+        virtual bool understand(const std::string & argv)
+            throw(std::invalid_argument) {
+
+            if ((!isUsed()) && (argv.find(name) == 0)) {
                 std::size_t pos = argv.find("=");
+
                 if (pos != name.size()) {
                     throw std::invalid_argument("Option: " + name + " requires value but no one has been provided");
                 }
 
                 std::stringstream ss;
-
                 ss << argv.substr(pos + 1);
-                ss >> value;
+                ss >> value;// memory leak? when uncommented and exception is
+                            // thrown, valgrind shows e.g.:
+                            //  possibly lost: 380 bytes in 7 blocks
 
                 if (ss.fail()) {
                     throw std::invalid_argument("Value for option: " + name + " failed conversion to the required type");
@@ -132,11 +132,7 @@ namespace command {
         /**
          * Current Option name
          */
-        OptionName name;
-
-        /** Variable indicating if current Option was already used or not */
-        bool used = false;
-
+        const OptionName name;
     public:
         /**
          * Default constructor.
@@ -145,15 +141,10 @@ namespace command {
          * @param description Description of current Option
          * @param function Function used to handle current Option.
          */
-        Option(std::string name, const std::string & description, void (*function)(void))
+        Option(const std::string & name, const std::string & description, void (*function)(void))
             : Parameter(description), Callable<void>(function), name(name) {
         }
 
-        /**
-         *
-         */
-        virtual ~Option() { }
-
         /**
          *
          */
@@ -177,7 +168,7 @@ namespace command {
          *  used to check against next value.
          */
         virtual bool understand(const std::string & argv) {
-            if ((!used) &&
+            if ((!isUsed()) &&
                 (argv == name)) {
                 used = true;
                 return true;