1 files changed, 443 insertions, 0 deletions
diff --git a/kate/part/katetextline.cpp b/kate/part/katetextline.cpp
new file mode 100644
index 000000000..250be5236
--- /dev/null
+++ b/kate/part/katetextline.cpp
@@ -0,0 +1,443 @@
+/* This file is part of the KDE libraries
+   Copyright (C) 2001-2003 Christoph Cullmann <cullmann@kde.org>
+   Copyright (C) 2002 Joseph Wenninger <jowenn@kde.org>
+
+   Based on:
+     KateTextLine : Copyright (C) 1999 Jochen Wilhelmy <digisnap@cs.tu-berlin.de>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License version 2 as published by the Free Software Foundation.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+
+#include "katetextline.h"
+#include "katerenderer.h"
+
+#include <kglobal.h>
+
+#include <qregexp.h>
+
+KateTextLine::KateTextLine ()
+  : m_flags(0)
+{
+}
+
+KateTextLine::~KateTextLine()
+{
+}
+
+void KateTextLine::insertText (uint pos, uint insLen, const QChar *insText, uchar *insAttribs)
+{
+  // nothing to do
+  if (insLen == 0)
+    return;
+
+  // calc new textLen, store old
+  uint oldTextLen = m_text.length();
+  m_text.insert (pos, insText, insLen);
+  uint textLen = m_text.length();
+
+  // resize the array
+  m_attributes.resize (textLen);
+
+  // HA, insert behind text end, fill with spaces
+  if (pos >= oldTextLen)
+  {
+    for (uint z = oldTextLen; z < pos; z++)
+      m_attributes[z] = 0;
+  }
+  // HA, insert in text, move the old text behind pos
+  else if (oldTextLen > 0)
+  {
+    for (int z = oldTextLen -1; z >= (int) pos; z--)
+      m_attributes[z+insLen] = m_attributes[z];
+  }
+
+  // BUH, actually insert the new text
+  for (uint z = 0; z < insLen; z++)
+  {
+    if (insAttribs == 0)
+      m_attributes[z+pos] = 0;
+    else
+      m_attributes[z+pos] = insAttribs[z];
+  }
+}
+
+void KateTextLine::removeText (uint pos, uint delLen)
+{
+  // nothing to do
+  if (delLen == 0)
+    return;
+
+  uint textLen = m_text.length();
+
+  if (textLen == 0)
+    return; // uh, again nothing real to do ;)
+
+  if (pos >= textLen)
+    return;
+
+  if ((pos + delLen) > textLen)
+    delLen = textLen - pos;
+
+  // BU, MOVE THE OLD TEXT AROUND
+  for (uint z = pos; z < textLen - delLen; z++)
+    m_attributes[z] = m_attributes[z+delLen];
+
+  m_text.remove (pos, delLen);
+  m_attributes.resize (m_text.length ());
+}
+
+void KateTextLine::truncate(uint newLen)
+{
+  if (newLen < m_text.length())
+  {
+    m_text.truncate (newLen);
+    m_attributes.truncate (newLen);
+  }
+}
+
+int KateTextLine::nextNonSpaceChar(uint pos) const
+{
+  const uint len = m_text.length();
+  const QChar *unicode = m_text.unicode();
+
+  for(uint i = pos; i < len; i++)
+  {
+    if(!unicode[i].isSpace())
+      return i;
+  }
+
+  return -1;
+}
+
+int KateTextLine::previousNonSpaceChar(uint pos) const
+{
+  const int len = m_text.length();
+
+  if (pos >= (uint)len)
+    pos = len - 1;
+
+  const QChar *unicode = m_text.unicode();
+
+  for(int i = pos; i >= 0; i--)
+  {
+    if(!unicode[i].isSpace())
+      return i;
+  }
+
+  return -1;
+}
+
+int KateTextLine::firstChar() const
+{
+  return nextNonSpaceChar(0);
+}
+
+int KateTextLine::lastChar() const
+{
+  return previousNonSpaceChar(m_text.length() - 1);
+}
+
+const QChar *KateTextLine::firstNonSpace() const
+{
+  int first = firstChar();
+  return (first > -1) ? ((QChar*)m_text.unicode())+first : m_text.unicode();
+}
+
+uint KateTextLine::indentDepth (uint tabwidth) const
+{
+  uint d = 0;
+  const uint len = m_text.length();
+  const QChar *unicode = m_text.unicode();
+
+  for(uint i = 0; i < len; i++)
+  {
+    if(unicode[i].isSpace())
+    {
+      if (unicode[i] == QChar('\t'))
+        d += tabwidth - (d % tabwidth);
+      else
+        d++;
+    }
+    else
+      return d;
+  }
+
+  return d;
+}
+
+bool KateTextLine::stringAtPos(uint pos, const QString& match) const
+{
+  const uint len = m_text.length();
+  const uint matchlen = match.length();
+
+  if ((pos+matchlen) > len)
+    return false;
+
+  // (pos > len) in case the uint pos was assigned a signed -1, pos+matchlen can
+  // overflow again which (pos+matchlen > len) does not catch; see bugs #129263 and #129580
+  Q_ASSERT(pos < len);
+
+  const QChar *unicode = m_text.unicode();
+  const QChar *matchUnicode = match.unicode();
+
+  for (uint i=0; i < matchlen; i++)
+    if (unicode[i+pos] != matchUnicode[i])
+      return false;
+
+  return true;
+}
+
+bool KateTextLine::startingWith(const QString& match) const
+{
+  const uint matchlen = match.length();
+
+  if (matchlen > m_text.length())
+    return false;
+
+  const QChar *unicode = m_text.unicode();
+  const QChar *matchUnicode = match.unicode();
+
+  for (uint i=0; i < matchlen; i++)
+    if (unicode[i] != matchUnicode[i])
+      return false;
+
+  return true;
+}
+
+bool KateTextLine::endingWith(const QString& match) const
+{
+  const uint matchlen = match.length();
+
+  if (matchlen > m_text.length())
+    return false;
+
+  const QChar *unicode = m_text.unicode();
+  const QChar *matchUnicode = match.unicode();
+
+  uint start = m_text.length() - matchlen;
+  for (uint i=0; i < matchlen; i++)
+    if (unicode[start+i] != matchUnicode[i])
+      return false;
+
+  return true;
+}
+
+int KateTextLine::cursorX(uint pos, uint tabChars) const
+{
+  uint x = 0;
+
+  const uint n = kMin (pos, m_text.length());
+  const QChar *unicode = m_text.unicode();
+
+  for ( uint z = 0; z < n; z++)
+  {
+    if (unicode[z] == QChar('\t'))
+      x += tabChars - (x % tabChars);
+    else
+      x++;
+  }
+
+  return x;
+}
+
+
+uint KateTextLine::lengthWithTabs (uint tabChars) const
+{
+  uint x = 0;
+  const uint len = m_text.length();
+  const QChar *unicode = m_text.unicode();
+
+  for ( uint z = 0; z < len; z++)
+  {
+    if (unicode[z] == QChar('\t'))
+      x += tabChars - (x % tabChars);
+    else
+      x++;
+  }
+
+  return x;
+}
+
+bool KateTextLine::searchText (uint startCol, const QString &text, uint *foundAtCol, uint *matchLen, bool casesensitive, bool backwards)
+{
+  int index;
+
+  if (backwards)
+  {
+    int col = startCol;
+    uint l = text.length();
+    // allow finding the string ending at eol
+    if ( col == (int) m_text.length() ) ++startCol;
+
+    do {
+      index = m_text.findRev( text, col, casesensitive );
+      col--;
+    } while ( col >= 0 && l + index >= startCol );
+  }
+  else
+    index = m_text.find (text, startCol, casesensitive);
+
+  if (index > -1)
+  {
+    if (foundAtCol)
+      (*foundAtCol) = index;
+    if (matchLen)
+      (*matchLen)=text.length();
+    return true;
+  }
+
+  return false;
+}
+
+bool KateTextLine::searchText (uint startCol, const QRegExp &regexp, uint *foundAtCol, uint *matchLen, bool backwards)
+{
+  int index;
+
+  if (backwards)
+  {
+    int col = startCol;
+
+    // allow finding the string ending at eol
+    if ( col == (int) m_text.length() ) ++startCol;
+    do {
+      index = regexp.searchRev (m_text, col);
+      col--;
+    } while ( col >= 0 && regexp.matchedLength() + index >= (int)startCol );
+  }
+  else
+    index = regexp.search (m_text, startCol);
+
+  if (index > -1)
+  {
+    if (foundAtCol)
+      (*foundAtCol) = index;
+
+    if (matchLen)
+      (*matchLen)=regexp.matchedLength();
+    return true;
+  }
+
+  return false;
+}
+
+char *KateTextLine::dump (char *buf, bool withHighlighting) const
+{
+  uint l = m_text.length();
+  char f = m_flags;
+
+  if (!withHighlighting)
+    f = f | KateTextLine::flagNoOtherData;
+
+  memcpy(buf, (char *) &f, 1);
+  buf += 1;
+
+  memcpy(buf, &l, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy(buf, (char *) m_text.unicode(), sizeof(QChar)*l);
+  buf += sizeof(QChar) * l;
+
+  if (!withHighlighting)
+    return buf;
+
+  memcpy(buf, (char *)m_attributes.data(), sizeof(uchar) * l);
+  buf += sizeof (uchar) * l;
+
+  uint lctx = m_ctx.size();
+  uint lfold = m_foldingList.size();
+  uint lind = m_indentationDepth.size();
+
+  memcpy(buf, &lctx, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy(buf, &lfold, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy(buf, &lind, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy(buf, (char *)m_ctx.data(), sizeof(short) * lctx);
+  buf += sizeof (short) * lctx;
+
+  memcpy(buf, (char *)m_foldingList.data(), sizeof(uint)*lfold);
+  buf += sizeof (uint) * lfold;
+
+  memcpy(buf, (char *)m_indentationDepth.data(), sizeof(unsigned short) * lind);
+  buf += sizeof (unsigned short) * lind;
+
+  return buf;
+}
+
+char *KateTextLine::restore (char *buf)
+{
+  uint l = 0;
+  char f = 0;
+
+  memcpy((char *) &f, buf, 1);
+  buf += 1;
+
+  // text + context length read
+  memcpy((char *) &l, buf, sizeof(uint));
+  buf += sizeof(uint);
+
+  // text + attributes
+  m_text.setUnicode ((QChar *) buf, l);
+  buf += sizeof(QChar) * l;
+
+  // we just restore a KateTextLine from a buffer first time
+  if (f & KateTextLine::flagNoOtherData)
+  {
+    m_flags = 0;
+
+    if (f & KateTextLine::flagAutoWrapped)
+      m_flags = m_flags | KateTextLine::flagAutoWrapped;
+
+    // fill with clean empty attribs !
+    m_attributes.fill (0, l);
+
+    return buf;
+  }
+  else
+    m_flags = f;
+
+  m_attributes.duplicate ((uchar *) buf, l);
+  buf += sizeof(uchar) * l;
+
+  uint lctx = 0;
+  uint lfold = 0;
+  uint lind = 0;
+
+  memcpy((char *) &lctx, buf, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy((char *) &lfold, buf, sizeof(uint));
+  buf += sizeof(uint);
+
+  memcpy((char *) &lind, buf, sizeof(uint));
+  buf += sizeof(uint);
+
+  m_ctx.duplicate ((short *) buf, lctx);
+  buf += sizeof(short) * lctx;
+
+  m_foldingList.duplicate ((uint *) buf, lfold);
+  buf += sizeof(uint)*lfold;
+
+  m_indentationDepth.duplicate ((unsigned short *) buf, lind);
+  buf += sizeof(unsigned short) * lind;
+
+  return buf;
+}
+
+// kate: space-indent on; indent-width 2; replace-tabs on;