From 2a441ecbea378da1a2cdea969c48bb7d9e547135 Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Wed, 8 Oct 2008 19:22:25 +0200
Subject: Import new upstream release 0.42

---
 cursor.cpp | 158 -------------------------------------------------------------
 1 file changed, 158 deletions(-)
 delete mode 100755 cursor.cpp

(limited to 'cursor.cpp')

diff --git a/cursor.cpp b/cursor.cpp
deleted file mode 100755
index cef8c7a..0000000
--- a/cursor.cpp
+++ /dev/null
@@ -1,158 +0,0 @@
-/* $Id: cursor.cpp,v 1.3 2006/11/05 04:42:43 ganzhorn Exp $
- * This file is part of lfhex.
- * Copyright (C) 2006 Salem Ganzhorn <eyekode@yahoo.com>
- *
- * This program 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 version 2.
- *
- * 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 "local.h"
-#include "cursor.hpp"
-
-//
-// Cursor implimentation
-//
-
-Cursor::Cursor(off_t byteOffset, 
-	       off_t charOffset, 
-	       off_t low,
-	       off_t high,
-	       off_t charsPerByte) 
-: _byteOffset(byteOffset), 
-  _charOffset(charOffset), 
-  _low(low),
-  _high(high),
-  _charsPerByte(charsPerByte)
-{}
-// note: range includes low but excludes high: [low,high) (like stl)
-// note: [foo,foo) is considered the empty set
-bool Cursor::setRange( off_t low, off_t high )
-{
-  if ( low > high )
-    return false;
-  _low = low;
-  _high = high;
-  return true;
-}
-
-off_t Cursor::decrByByte( off_t n )
-{
-  // check for underflow
-  if (n > _byteOffset)
-    return OutOfRange;
-  else
-    _byteOffset -= n;
-  return _byteOffset;
-}
-off_t Cursor::decrByChar( off_t n )
-{
-  off_t byteDelta = n/_charsPerByte;
-  off_t charDelta = n%_charsPerByte;
-  
-  if ( charDelta > _charOffset ) {
-    if( byteDelta == MAX_OFFSET ) {
-      throw out_of_range("Cursor decriment underflowed.\n");
-    }
-    byteDelta++;
-  }
-  // if underflow.. then just return
-  if( byteDelta && OutOfRange == decrByByte( byteDelta ) ) {
-      return _charOffset;
-  }
-  if ( charDelta > _charOffset ) {
-    // offset == maxidx - abs(_charOffset - charDelta)
-    _charOffset = (_charsPerByte) - (charDelta - _charOffset);
-  } else {
-    _charOffset -= charDelta;
-  }
-  return _charOffset;
-}
-// note: off_t is always positive
-off_t Cursor::incrByChar( off_t n )
-{
-  off_t byteDelta = n/_charsPerByte;
-  off_t charDelta = n%_charsPerByte;
-
-  // carry
-  if ( charDelta + _charOffset >= _charsPerByte ) {
-    // Note: this cannot overflow unless chars perbyte == 1
-    if (  byteDelta == MAX_OFFSET ) {
-      throw out_of_range("Cursor increment exceeded maximum offset.\n");
-    }
-    byteDelta++;
-  }
-  // if out of range, just leave the char offset where it is
-  if( byteDelta && OutOfRange == incrByByte( byteDelta ) ) {
-      return _charOffset;
-  }
-  // limit _charOffset to _charsPerByte - 1
-  _charOffset = (charDelta + _charOffset)%_charsPerByte;
-  return _charOffset;
-}
-
-off_t Cursor::incrByByte( off_t byteDelta )
-{
-  if ( byteDelta > MAX_OFFSET - _byteOffset ) {
-    throw out_of_range("Cursor increment exceeded maximum offset.\n");
-  }
-  if ( _byteOffset + byteDelta >= _high ) 
-    return OutOfRange;
-  return (_byteOffset += byteDelta);
-}
-
-//
-// accessor implimentations
-//
-off_t Cursor::byteOffset() const
-{
-  return _byteOffset;
-}
-off_t Cursor::charOffset() const
-{
-  return _charOffset;
-}
-#define MIN(a,b) (a < b)?a:b
-off_t Cursor::setCharsPerByte( off_t charsPerByte )
-{
-  _charsPerByte = charsPerByte;
-  _charOffset = MIN(_charOffset,charsPerByte-1);
-  return _charsPerByte;
-}
-// _byteOffset values are clamped to:
-// [_low,_high)
-// _charOffset values are clamped to:
-// [0,_charsPerByte-1]
-void Cursor::setOffset( off_t byteOffset, off_t charOffset )
-{
-  assignClamped(_byteOffset,byteOffset,0,_high);
-  assignClamped(_charOffset,charOffset,0,_charsPerByte);
-}
-off_t Cursor::charOffsetAbsolute() const
-{
-  return _byteOffset*_charsPerByte + _charOffset;
-}
-//
-// void Cursor::assignClamped(dst,src, low,high);
-// convienience function for assigning dst = src
-// clamped to [low,high)
-//
-void Cursor::assignClamped(off_t& dst, off_t src, off_t low, off_t high)
-{
-  if( src < low ) {
-    dst = low;
-  } else if( src >= high ) {
-    dst = high-1;
-  } else {
-    dst = src;
-  }
-} 
-- 
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