Added --hash-check-only opiton.

Added --hash-check-only opiton.  If true is given, after hash check
using --check-integrity option, abort download whether or not download
is complete. The default value is false.

src/BtCheckIntegrityEntry.cc

@@ -51,6 +51,9 @@ BtCheckIntegrityEntry::~BtCheckIntegrityEntry() {}
 void BtCheckIntegrityEntry::onDownloadIncomplete
 (std::vector<Command*>& commands, DownloadEngine* e)
 {
+  if(getRequestGroup()->getOption()->getAsBool(PREF_HASH_CHECK_ONLY)) {
+    return;
+  }
   const SharedHandle<DiskAdaptor>& diskAdaptor =
     getRequestGroup()->getPieceStorage()->getDiskAdaptor();
   if(diskAdaptor->isReadOnlyEnabled()) {
@@ -71,7 +74,8 @@ void BtCheckIntegrityEntry::onDownloadFinished
   // are valid, then aira2 goes to seeding mode. Sometimes it is better
   // to exit rather than doing seeding. So, it would be good to toggle this
   // behavior.
-  if(getRequestGroup()->getOption()->getAsBool(PREF_BT_HASH_CHECK_SEED)) {
+  if(!getRequestGroup()->getOption()->getAsBool(PREF_HASH_CHECK_ONLY) &&
+     getRequestGroup()->getOption()->getAsBool(PREF_BT_HASH_CHECK_SEED)) {
     SharedHandle<BtFileAllocationEntry> entry
       (new BtFileAllocationEntry(getRequestGroup()));
     proceedFileAllocation(commands, entry, e);

src/OptionHandlerFactory.cc

@@ -306,6 +306,20 @@ OptionHandlers OptionHandlerFactory::createOptionHandlers()
     op->addTag(TAG_BASIC);
     handlers.push_back(op);
   }
+#ifdef ENABLE_MESSAGE_DIGEST
+  {
+    SharedHandle<OptionHandler> op(new BooleanOptionHandler
+                                   (PREF_HASH_CHECK_ONLY,
+                                    TEXT_HASH_CHECK_ONLY,
+                                    A2_V_FALSE,
+                                    OptionHandler::OPT_ARG));
+    op->addTag(TAG_ADVANCED);
+    op->addTag(TAG_BITTORRENT);
+    op->addTag(TAG_METALINK);
+    op->addTag(TAG_FILE);
+    handlers.push_back(op);
+  }
+#endif // ENABLE_MESSAGE_DIGEST
   {
     SharedHandle<OptionHandler> op(new BooleanOptionHandler
                                    (PREF_HUMAN_READABLE,

src/StreamCheckIntegrityEntry.cc

@@ -36,6 +36,8 @@
 #include "RequestGroup.h"
 #include "DownloadEngine.h"
 #include "StreamFileAllocationEntry.h"
+#include "prefs.h"
+#include "Option.h"
 
 namespace aria2 {
 
@@ -49,6 +51,9 @@ StreamCheckIntegrityEntry::~StreamCheckIntegrityEntry() {}
 void StreamCheckIntegrityEntry::onDownloadIncomplete
 (std::vector<Command*>& commands, DownloadEngine* e)
 {
+  if(getRequestGroup()->getOption()->getAsBool(PREF_HASH_CHECK_ONLY)) {
+    return;
+  }
   SharedHandle<FileAllocationEntry> entry
     (new StreamFileAllocationEntry(getRequestGroup(), popNextCommand()));
   proceedFileAllocation(commands, entry, e);

src/download_helper.cc

@@ -168,7 +168,8 @@ const std::set<std::string>& listRequestOptions()
     PREF_RETRY_WAIT,
     PREF_METALINK_BASE_URI,
     PREF_PAUSE,
-    PREF_STREAM_PIECE_SELECTOR
+    PREF_STREAM_PIECE_SELECTOR,
+    PREF_HASH_CHECK_ONLY
   };
   static std::set<std::string> requestOptions
     (vbegin(REQUEST_OPTIONS), vend(REQUEST_OPTIONS));

src/prefs.cc

@@ -221,6 +221,8 @@ const std::string PREF_TRUNCATE_CONSOLE_READOUT("truncate-console-readout");
 const std::string PREF_PAUSE("pause");
 // value: default | full
 const std::string PREF_DOWNLOAD_RESULT("download-result");
+// value: true | false
+const std::string PREF_HASH_CHECK_ONLY("hash-check-only");
 
 /**
  * FTP related preferences

src/prefs.h

@@ -224,6 +224,8 @@ extern const std::string PREF_TRUNCATE_CONSOLE_READOUT;
 extern const std::string PREF_PAUSE;
 // value: default | full
 extern const std::string PREF_DOWNLOAD_RESULT;
+// value: true | false
+extern const std::string PREF_HASH_CHECK_ONLY;
 
 /**
  * FTP related preferences

src/usage_text.h

@@ -818,3 +818,7 @@
     "                              path/URI. The percentage of progress and\n" \
     "                              path/URI are printed for each requested file in\n" \
     "                              each row.")
+#define TEXT_HASH_CHECK_ONLY                    \
+  _(" --hash-check-only[=true|false] If true is given, after hash check using\n" \
+    "                              --check-integrity option, abort download whether\n" \
+    "                              or not download is complete.")