Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 220 insertions, 0 deletions

diff --git a/libkdepim/spellingfilter.cpp b/libkdepim/spellingfilter.cpp
new file mode 100644
index 000000000..d58ab3162
--- /dev/null
+++ b/libkdepim/spellingfilter.cpp
@@ -0,0 +1,220 @@
+/**
+ * spellingfilter.cpp
+ *
+ * Copyright (c) 2002 Dave Corrie <kde@davecorrie.com>
+ *
+ *  This file is part of KMail.
+ *
+ *  KMail is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <kdebug.h>
+#include "spellingfilter.h"
+
+//-----------------------------------------------------------------------------
+// SpellingFilter implementation
+//
+
+SpellingFilter::SpellingFilter(const QString& text, const QString& quotePrefix,
+  UrlFiltering filterUrls, EmailAddressFiltering filterEmailAddresses,
+  const QStringList& filterStrings)
+  : mOriginal(text)
+{
+  TextCensor c(text);
+
+  if(!quotePrefix.isEmpty())
+    c.censorQuotations(quotePrefix);
+
+  if(filterUrls)
+    c.censorUrls();
+
+  if(filterEmailAddresses)
+    c.censorEmailAddresses();
+
+  QStringList::const_iterator iter = filterStrings.begin();
+  while(iter != filterStrings.end())
+  {
+    c.censorString(*iter);
+    ++iter;
+  }
+
+  mFiltered = c.censoredText();
+}
+
+QString SpellingFilter::originalText() const
+{
+  return mOriginal;
+}
+
+QString SpellingFilter::filteredText() const
+{
+  return mFiltered;
+}
+
+//-----------------------------------------------------------------------------
+// SpellingFilter::TextCensor implementation
+//
+
+SpellingFilter::TextCensor::TextCensor(const QString& s)
+  : LinkLocator(s)
+{
+
+}
+
+void SpellingFilter::TextCensor::censorQuotations(const QString& quotePrefix)
+{
+  mPos = 0;
+  while(mPos < static_cast<int>(mText.length()))
+  {
+    // Find start of quotation
+    findQuotation(quotePrefix);
+    if(mPos < static_cast<int>(mText.length()))
+    {
+      int start = mPos;
+      skipQuotation(quotePrefix);
+
+      // Replace quotation with spaces
+      int len = mPos - start;
+      QString spaces;
+      spaces.fill(' ', len);
+      mText.replace(start, len, spaces);
+
+      //kdDebug(5006) << "censored quotation ["
+      //  << start << ", " << mPos << ")" << endl;
+    }
+  }
+}
+
+void SpellingFilter::TextCensor::censorUrls()
+{
+  mPos = 0;
+  while(mPos < static_cast<int>(mText.length()))
+  {
+    // Find start of url
+    QString url;
+    while(mPos < static_cast<int>(mText.length()) && url.isEmpty())
+    {
+      url = getUrl();
+      ++mPos;
+    }
+
+    if(mPos < static_cast<int>(mText.length()) && !url.isEmpty())
+    {
+      int start = mPos - url.length();
+
+      // Replace url with spaces
+      url.fill(' ');
+      mText.replace(start, url.length(), url);
+
+      //kdDebug(5006) << "censored url ["
+      //  << start << ", " << mPos << ")" << endl;
+    }
+  }
+}
+
+void SpellingFilter::TextCensor::censorEmailAddresses()
+{
+  mPos = 0;
+  while(mPos < static_cast<int>(mText.length()))
+  {
+    // Find start of email address
+    findEmailAddress();
+    if(mPos < static_cast<int>(mText.length()))
+    {
+      QString address = getEmailAddress();
+      ++mPos;
+      if(!address.isEmpty())
+      {
+        int start = mPos - address.length();
+
+        // Replace address with spaces
+        address.fill(' ');
+        mText.replace(start, address.length(), address);
+
+        //kdDebug(5006) << "censored addr ["
+        //  << start << ", "<< mPos << ")" << endl;
+      }
+    }
+  }
+}
+
+void SpellingFilter::TextCensor::censorString(const QString& s)
+{
+  mPos = 0;
+  while(mPos != -1)
+  {
+    // Find start of string
+    mPos = mText.find(s, mPos);
+    if(mPos != -1)
+    {
+      // Replace string with spaces
+      QString spaces;
+      spaces.fill(' ', s.length());
+      mText.replace(mPos, s.length(), spaces);
+      mPos += s.length();
+
+      //kdDebug(5006) << "censored string ["
+      //  << mPos << ", "<< mPos+s.length() << ")" << endl;
+    }
+  }
+}
+
+QString SpellingFilter::TextCensor::censoredText() const
+{
+  return mText;
+}
+
+//-----------------------------------------------------------------------------
+// text censorship helper functions
+//
+
+bool SpellingFilter::TextCensor::atLineStart() const
+{
+  return (mPos == 0 && static_cast<int>(mText.length()) > 0) || (mText[mPos - 1] == '\n');
+}
+
+void SpellingFilter::TextCensor::skipLine()
+{
+  mPos = mText.find('\n', mPos);
+  if(mPos == -1)
+    mPos = static_cast<int>(mText.length());
+  else
+    ++mPos;
+}
+
+bool SpellingFilter::TextCensor::atQuotation(const QString& quotePrefix) const
+{
+  return atLineStart() &&
+    mText.mid(mPos, quotePrefix.length()) == quotePrefix;
+}
+
+void SpellingFilter::TextCensor::skipQuotation(const QString& quotePrefix)
+{
+  while(atQuotation(quotePrefix))
+    skipLine();
+}
+
+void SpellingFilter::TextCensor::findQuotation(const QString& quotePrefix)
+{
+  while(mPos < static_cast<int>(mText.length()) && !atQuotation(quotePrefix))
+    skipLine();
+}
+
+void SpellingFilter::TextCensor::findEmailAddress()
+{
+  while(mPos < static_cast<int>(mText.length()) && mText[mPos] != '@')
+    ++mPos;
+}
+