X-Git-Url: https://git.dlugolecki.net.pl/?a=blobdiff_plain;f=include%2Foption.h;h=7e9917b589c7021a0c5852695e90eecb5fa36908;hb=71d10208f91a566b40ea1bdbb1e2f20f85f8182f;hp=59de3957b9d9f97cdfb651b57b470ce03dc057b6;hpb=32ec13f77dce87c6f8086baa954b1d0f9fedb89c;p=command.git

diff --git a/include/option.h b/include/option.h
index 59de395..7e9917b 100644
--- a/include/option.h
+++ b/include/option.h
@@ -8,6 +8,7 @@
 #include "parameter.h"
 #include "exception/missingOptionValue.h"
 #include "exception/optionFailedConversion.h"
+#include "exception/optionValueNotSpecified.h"
 
 namespace command {
     /**
@@ -88,26 +89,43 @@ namespace command {
          *  to ParameterType
          */
         virtual bool understand(const std::string & argv) {
-
-            if (argv.find(name) == 0) {
-                std::size_t pos = argv.find("=");
+            if (this->hasName(argv)) {
+                std::size_t pos = this->valuePosition(argv);
 
                 if (pos != name.size()) {
                     throw MissingOptionValue("Option: " + name + " requires value but no one has been provided");
                 }
 
                 std::stringstream ss;
-                ss << argv.substr(pos + 1);
+                ss << std::fixed << argv.substr(pos + 1);
                 ss >> value;
 
                 if (ss.fail()) {
-                    throw OptionFailedConversion("Value for option: " + name + " failed conversion to the required type");
+                    throw OptionFailedConversion("Option: " + name + " failed value conversion to the required type");
                 }
 
                 return true;
             }
             return false;
         }
+
+        /**
+         * \inheritdoc
+         */
+        virtual unsigned int valuePosition(const std::string & value) {
+            std::size_t pos = value.find("=");
+
+            if ((this->hasName(value)) && (pos == std::string::npos)) {
+                throw OptionValueNotSpecified("Option: " + name + " requires value to be specified after equal sign, but no equal sign was found");
+            }
+
+            return pos;
+        }
+
+    protected:
+        bool hasName(const std::string & argv) {
+            return argv.find(name) == 0;
+        }
     };
 
     /**
@@ -173,6 +191,13 @@ namespace command {
             }
             return false;
         }
+
+        /**
+         * \inheritdoc
+         */
+        virtual unsigned int valuePosition(const std::string & ) {
+            throw new std::invalid_argument(this->describe() + " is void Option, so it does not have value part");
+        }
     };
 }