1 files changed, 63 insertions, 0 deletions
diff --git a/sw/source/core/tox/ToxWhitespaceStripper.cxx b/sw/source/core/tox/ToxWhitespaceStripper.cxx
new file mode 100644
index 000000000..b2fe68727
--- /dev/null
+++ b/sw/source/core/tox/ToxWhitespaceStripper.cxx
@@ -0,0 +1,63 @@
+/* -*- 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/.
+ */
+
+#include <ToxWhitespaceStripper.hxx>
+
+#include <o3tl/safeint.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+
+
+namespace sw {
+
+ToxWhitespaceStripper::ToxWhitespaceStripper(const OUString& inputString)
+{
+    OUStringBuffer buffer;
+
+    bool lastCharacterWasWhitespace = false;
+    for (sal_Int32 pos = 0; pos < inputString.getLength(); ++pos) {
+        sal_Unicode cur = inputString[pos];
+
+        if (cur == ' ' || cur == '\n' || cur == '\t') {
+            // merge consecutive whitespaces (and translate them to spaces)
+            if (!lastCharacterWasWhitespace) {
+                buffer.append(' ');
+            }
+            lastCharacterWasWhitespace = true;
+        }
+        else {
+            buffer.append(cur);
+            lastCharacterWasWhitespace = false;
+        }
+        mNewPositions.push_back(buffer.getLength()-1);
+    }
+    // strip the last whitespace (if there was one)
+    if (lastCharacterWasWhitespace) {
+        buffer.truncate(buffer.getLength() - 1);
+    }
+    mNewPositions.push_back(buffer.getLength());
+    mStripped = buffer.getStr();
+}
+
+
+sal_Int32
+ToxWhitespaceStripper::GetPositionInStrippedString(sal_Int32 pos) const
+{
+    assert(0 <= pos);
+    if (o3tl::make_unsigned(pos) >= mNewPositions.size()) {
+        // TODO probably this should assert, not just warn?
+        SAL_WARN("sw.core", "Requested position of TOX entry text which does not exist. "
+                            "Maybe the formatting hint is corrupt?");
+        return mNewPositions.back();
+    }
+    return mNewPositions.at(pos);
+}
+
+
+}