utility to compute hash sums for files

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

util/CMakeLists.txt

@@ -4,3 +4,4 @@ add_subdirectory(normalize)
 add_subdirectory(plugintest)
 add_subdirectory(qlalr)
 add_subdirectory(imgconv)
+add_subdirectory(filehash)

util/filehash/CMakeLists.txt

@@ -0,0 +1,19 @@
+# add_definitions()
+set(EXTRA_FILEHASH_LIBS KtCore KtNetwork)
+
+include_directories(
+    ${CMAKE_BINARY_DIR}/include
+    ${CMAKE_BINARY_DIR}/privateinclude
+    ${CMAKE_BINARY_DIR}/include/QtCore
+    ${CMAKE_BINARY_DIR}/include/QtNetwork
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+set(FILEHASH_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/main.cpp
+)
+
+katie_setup_target(filehash ${FILEHASH_SOURCES})
+
+add_executable(filehash ${filehash_SOURCES})
+target_link_libraries(filehash ${EXTRA_FILEHASH_LIBS})

util/filehash/README

@@ -0,0 +1 @@
+This utility will print hash sum of file in chosen algorithm.

util/filehash/main.cpp

@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 Ivailo Monev
+**
+** This file is part of the utils of the Katie Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+**
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qfile.h>
+#include <QtNetwork/qcryptographichash.h>
+
+QT_USE_NAMESPACE
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication app(argc, argv);
+
+    const QStringList args = app.arguments().mid(1);
+    if (args.size() != 2) {
+        qWarning() << "Usage: imgconv <md5|sha1|sha256|sha512|blake3> <filepath>";
+        return 1;
+    }
+
+    QCryptographicHash::Algorithm algorithm = QCryptographicHash::Md5;
+    if (args.at(0) == "md5") {
+        algorithm = QCryptographicHash::Md5;
+    } else if (args.at(0) == "sha1") {
+        algorithm = QCryptographicHash::Sha1;
+    } else if (args.at(0) == "sha256") {
+        algorithm = QCryptographicHash::Sha256;
+    } else if (args.at(0) == "sha512") {
+        algorithm = QCryptographicHash::Sha512;
+    } else if (args.at(0) == "blake3") {
+        algorithm = QCryptographicHash::BLAKE3;
+    } else {
+        qWarning() << "Invalid algorithm" << args.at(0);
+        return 2;
+    }
+
+    QFile file(args.at(1));
+    if (file.open(QFile::ReadOnly) == false) {
+        qWarning() << "Could not open" << args.at(1);
+        return 3;
+    }
+
+    const QByteArray hash = QCryptographicHash::hash(file.readAll(), algorithm).toHex();
+    if (hash.isEmpty()) {
+        qWarning() << "Could not hash" << args.at(1);
+        return 4;
+    }
+
+    qDebug() << hash;
+
+    return 0;
+}
+