2009-09-09 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

Added LocalFilePathOptionHandler which check whether the specified
	file path does exist or not.
	* src/OptionHandlerImpl.cc
	* src/message.h

ChangeLog

@@ -1,3 +1,10 @@
+2009-09-09  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Added LocalFilePathOptionHandler which check whether the specified
+	file path does exist or not.
+	* src/OptionHandlerImpl.cc
+	* src/message.h
+
 2009-09-07  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Updated wiki page URI.

src/OptionHandlerImpl.h

@@ -53,6 +53,8 @@
 #include "A2STR.h"
 #include "Request.h"
 #include "a2functional.h"
+#include "message.h"
+#include "File.h"
 
 namespace aria2 {
 
@@ -572,6 +574,32 @@ public:
   }
 };
 
+class LocalFilePathOptionHandler : public NameMatchOptionHandler {
+public:
+  LocalFilePathOptionHandler
+  (const std::string& optName,
+   const std::string& description = NO_DESCRIPTION,
+   const std::string& defaultValue = NO_DEFAULT_VALUE,
+   char shortName = 0):
+    NameMatchOptionHandler(optName, description, defaultValue,
+			   OptionHandler::REQ_ARG,
+			   shortName) {}
+
+  virtual void parseArg(Option& option, const std::string& optarg)
+  {
+    if(!File(optarg).exists()) {
+      throw DL_ABORT_EX
+	(StringFormat(MSG_FILE_NOT_EXIST, optarg.c_str()).str());
+    }
+    option.put(_optName, optarg);
+  }
+  
+  virtual std::string createPossibleValuesString() const
+  {
+    return "/path/to/file";
+  }
+};
+
 } // namespace aria2
 
 #endif // _D_OPTION_HANDLER_IMPL_H_

src/message.h

@@ -174,6 +174,7 @@
 #define MSG_GID_NOT_PROVIDED "GID is not provided."
 #define MSG_CANNOT_PARSE_XML_RPC_REQUEST "Failed to parse xml-rpc request."
 #define MSG_GOOD_BYE_SEEDER "Client is in seed state: Good Bye Seeder;)"
+#define MSG_FILE_NOT_EXIST "File %s was not found."
 
 #define EX_TIME_OUT _("Timeout.")
 #define EX_INVALID_CHUNK_SIZE _("Invalid chunk size.")