Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 61 insertions, 0 deletions

diff --git a/vcl/inc/graphic/DetectorTools.hxx b/vcl/inc/graphic/DetectorTools.hxx
new file mode 100644
index 000000000..3847457fc
--- /dev/null
+++ b/vcl/inc/graphic/DetectorTools.hxx
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#pragma once
+
+namespace vcl
+{
+const char* matchArray(const char* pSource, sal_Int32 nSourceSize, const char* pSearch,
+                       sal_Int32 nSearchSize)
+{
+    for (sal_Int32 increment = 0; increment <= (nSourceSize - nSearchSize); ++increment)
+    {
+        bool bMatch = true;
+        // search both arrays if they match
+        for (sal_Int32 index = 0; index < nSearchSize && bMatch; ++index)
+        {
+            if (pSource[index] != pSearch[index])
+                bMatch = false;
+        }
+        // match has been found
+        if (bMatch)
+            return pSource;
+        pSource++;
+    }
+    return nullptr;
+}
+
+const char* matchArrayWithString(const char* pSource, sal_Int32 nSourceSize, OString const& rString)
+{
+    return matchArray(pSource, nSourceSize, rString.getStr(), rString.getLength());
+}
+
+bool checkArrayForMatchingStrings(const char* pSource, sal_Int32 nSourceSize,
+                                  std::vector<OString> const& rStrings)
+{
+    if (rStrings.empty())
+        return false;
+    if (rStrings.size() < 2)
+        return matchArrayWithString(pSource, nSourceSize, rStrings[0]) != nullptr;
+
+    const char* pBegin = pSource;
+    const char* pCurrent = pSource;
+    for (OString const& rString : rStrings)
+    {
+        sal_Int32 nCurrentSize = nSourceSize - sal_Int32(pCurrent - pBegin);
+        pCurrent = matchArray(pCurrent, nCurrentSize, rString.getStr(), rString.getLength());
+        if (pCurrent == nullptr)
+            return false;
+    }
+    return true;
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */