From ce5cb5bc57ae95ca920b0a8b4715a201a491d897 Mon Sep 17 00:00:00 2001
From: Arno <am@disconnect.de>
Date: Wed, 12 May 2010 16:52:19 +0200
Subject: Got rid of crypto++ dependency

Replaced calls to crypto++ with QCryptographicHash
---
 helper.cpp | 45 ++++++++++++++++++++++-----------------------
 shemov.pro |  2 --
 2 files changed, 22 insertions(+), 25 deletions(-)

diff --git a/helper.cpp b/helper.cpp
index e30b299..1b8640b 100644
--- a/helper.cpp
+++ b/helper.cpp
@@ -10,12 +10,7 @@
 #include <QFileInfo>
 #include <QFile>
 #include <QSettings>
-
-#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
-#include <md5.h>
-#include <files.h>
-#include <filters.h>
-#include <hex.h>
+#include <QCryptographicHash>
 
 #include "helper.h"
 
@@ -41,8 +36,8 @@ namespace Helper {
 					retval = "video/";
 				}
 			}
-			return retval;
 		}
+		return retval;
 	}
 
 	const QString md5Sum(const QString &path){
@@ -51,28 +46,32 @@ namespace Helper {
 			return QString();
 		}
 
-		using namespace CryptoPP;
-		Weak::MD5 hash;
-		std::string res;
 		QString retval;
+		QCryptographicHash h(QCryptographicHash::Md5);
+		QFile file(path);
+		file.open(QIODevice::ReadOnly);
+		qint64 read = 0;
 		if(info.size() < (5 * 1024 * 1024)){
-			FileSource f(qPrintable(path), true, new HashFilter(hash, new HexEncoder(new StringSink(res))));
-			retval = QString::fromStdString(res).toLower();
+			QByteArray data(4096, '\0');
+			do {
+				read = file.read(data.data(), 4096);
+				h.addData(data.data(), read);
+			} while (read == 4096);
+			QByteArray res = h.result();
+			retval = res.toHex().toLower();
 		}else{
-			QFile file(path);
-			file.open(QIODevice::ReadOnly);
+			QByteArray data(512, '\0');
 			int offset = info.size() / 3;
 			file.seek(offset);
 			int numBytes = 512 * 1024;
-			char *data = new char[numBytes];
-			int read = file.read(data, numBytes);
-			if(read != numBytes){
-				delete [] data;
-				return QString();
-			}
-			StringSource s((byte*)data, numBytes, true, new HashFilter(hash, new HexEncoder(new StringSink(res))));
-			retval = QString::fromStdString(res).toLower();
-			delete [] data;
+			int readBytes = 0;
+			do {
+				read = file.read(data.data(), 512);
+				readBytes += read;
+				h.addData(data.data(), read);
+			} while(readBytes < numBytes);
+			QByteArray res = h.result();
+			retval = res.toHex().toLower();
 		}
 		return retval;
 	}
diff --git a/shemov.pro b/shemov.pro
index c4f7449..1201dbd 100644
--- a/shemov.pro
+++ b/shemov.pro
@@ -78,6 +78,4 @@ HEADERS = listitem.h \
     graphbarwidget.h \
     programconfigurator.h
 LIBS += -lmagic
-LIBS += -lcryptopp
-INCLUDEPATH += /usr/include/cryptopp
 RESOURCES = shemov.qrc
-- 
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