Revision: 2669
http://rigsofrods.svn.sourceforge.net/rigsofrods/?rev=2669&view=rev
Author: rorthomas
Date: 2012-05-26 00:09:28 +0000 (Sat, 26 May 2012)
Log Message:
-----------
added new util function "generateHashFromDataStream"
Modified Paths:
--------------
trunk/source/main/utils/utils.cpp
trunk/source/main/utils/utils.h
Modified: trunk/source/main/utils/utils.cpp
===================================================================
--- trunk/source/main/utils/utils.cpp 2012-05-25 21:38:30 UTC (rev 2668)
+++ trunk/source/main/utils/utils.cpp 2012-05-26 00:09:28 UTC (rev 2669)
@@ -27,6 +27,8 @@
#include <iconv.h>
#endif //WIN32
+#include "sha1.h"
+
#include "Ogre.h"
using namespace Ogre;
@@ -368,3 +370,30 @@
return value;
}
+
+Ogre::String generateHashFromDataStream(Ogre::DataStreamPtr &ds)
+{
+ // copy whole file into a buffer
+ uint8_t *buf = 0;
+ ds->seek(0); // from start
+ // alloc buffer
+ uint32_t bufSize = ds->size();
+ buf = (uint8_t *)malloc(bufSize);
+ // read into buffer
+ ds->read(buf, bufSize);
+
+ // and build the hash over it
+ char hash_result[250];
+ memset(hash_result, 0, 249);
+ RoR::CSHA1 sha1;
+ sha1.UpdateHash(buf, bufSize);
+ sha1.Final();
+ sha1.ReportHash(hash_result, RoR::CSHA1::REPORT_HEX_SHORT);
+
+ // revert DS to start
+ ds->seek(0);
+ // release memory
+ free(buf);
+
+ return String(hash_result);
+}
Modified: trunk/source/main/utils/utils.h
===================================================================
--- trunk/source/main/utils/utils.h 2012-05-25 21:38:30 UTC (rev 2668)
+++ trunk/source/main/utils/utils.h 2012-05-26 00:09:28 UTC (rev 2669)
@@ -26,6 +26,7 @@
#include <OgrePrerequisites.h>
#include <OgreUTFString.h>
+#include <OgreDataStream.h>
#ifdef USE_MYGUI
#include <MyGUI.h>
@@ -135,4 +136,6 @@
Ogre::Real Round(Ogre::Real value, unsigned short ndigits = 0);
+// generates a hash from a Datastream, beware, its loading the whole thing
into a bufer, so its not suited for big files
+Ogre::String generateHashFromDataStream(Ogre::DataStreamPtr &ds);
#endif //UTILS_H_
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