Renamed version4 to flaim and version5 to xflaim
git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@7 0109f412-320b-0410-ab79-c3e0c5ffbbe6
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198
flaim/src/gtxt2num.cpp
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198
flaim/src/gtxt2num.cpp
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//-------------------------------------------------------------------------
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// Desc: Convert internal text to internal number
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// Tabs: 3
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//
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// Copyright (c) 1992-1994,1996-2001,2003-2006 Novell, Inc. All Rights Reserved.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, contact Novell, Inc.
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//
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// To contact Novell about this file by physical or electronic mail,
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// you may find current contact information at www.novell.com
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//
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// $Id: gtxt2num.cpp 12309 2006-01-19 15:09:04 -0700 (Thu, 19 Jan 2006) dsanders $
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//-------------------------------------------------------------------------
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#include "flaimsys.h"
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/****************************************************************************
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Desc: This routine converts an internal text string to a number.
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Ret: SUCCESS or FERR_CONV_BAD_DIGIT or FERR_CONV_DEST_OVERFLOW.
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Notes: If the buffer pointer is NULL, the routine just determines how
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much buffer space is needed to return the text in number
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format.
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****************************************************************************/
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RCODE GedTextToNum(
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FLMBYTE * textStr, /* Pointer to buffer containing TEXT */
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FLMUINT textLen, /* Length of text (in bytes) */
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FLMBYTE * buffer, /* Pointer to buffer where number data is to be
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returned */
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FLMUINT * bufLenRV) /* Return length -- on input contains buffer size */
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{
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FLMBYTE * outPtr;
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FLMBYTE c;
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FLMUINT bytesProcessed;
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FLMUINT bytesOutput;
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FLMUINT outputData;
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FLMUINT maxOutLen;
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FLMUINT objType;
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FLMUINT objLength;
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FLMBOOL firstNibble;
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FLMBOOL have1Num;
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FLMBOOL insideNum;
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FLMBOOL haveSign;
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maxOutLen = *bufLenRV;
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outputData = ((buffer != NULL) && (maxOutLen));
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bytesProcessed =
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bytesOutput = 0;
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outPtr = buffer;
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/* Parse through the string outputting data to the buffer */
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/* as we go. */
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haveSign =
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have1Num =
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insideNum = 0;
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firstNibble = 1;
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if( textStr == NULL)
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textLen = 0;
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for(
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; bytesProcessed < textLen
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; textStr += objLength, bytesProcessed += objLength)
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{
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/* Determine what we are pointing at */
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c = *textStr;
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objType = (FLMBYTE)GedTextObjType( c); /* Don't put this in if() below */
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if( objType == ASCII_CHAR_CODE)
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{
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objLength = 1;
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if( (c == ASCII_SPACE) || (c == ASCII_TAB) || (c == ASCII_NEWLINE) || (c == ASCII_CR))
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{
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if( insideNum)
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have1Num = 1;
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break;
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}
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/* Code below was a break - now skips leading zeros */
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if( (c == ASCII_ZERO) && (!insideNum)) /* Ignore leading zeroes */
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continue;
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if( (c >= ASCII_ZERO) && (c <= ASCII_NINE))
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{
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if( !insideNum)
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{
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insideNum = 1;
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haveSign = 1;
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}
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c -= ASCII_ZERO;
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}
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/* Handle sign characters ('+', '-') */
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else if( ((c == ASCII_PLUS) || (c == ASCII_MINUS)) && (!haveSign) && (!insideNum))
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{
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haveSign = 1;
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if( c == ASCII_MINUS)
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c = 0x0B;
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}
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else
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return( RC_SET( FERR_CONV_BAD_DIGIT));
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if( outputData)
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{
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if( (firstNibble) && (bytesOutput == maxOutLen))
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return( RC_SET( FERR_CONV_DEST_OVERFLOW));
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if( firstNibble)
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{
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c <<= 4;
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*outPtr = c;
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}
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else
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{
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*outPtr = (FLMBYTE)(*outPtr + c);
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outPtr++;
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}
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}
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if( firstNibble)
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bytesOutput++;
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firstNibble = !firstNibble;
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}
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else switch( objType)
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{
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case WHITE_SPACE_CODE:
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objLength = 1;
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break;
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/* Skip the unkown codes for now */
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case UNK_GT_255_CODE:
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objLength = (1 + sizeof( FLMUINT16) + FB2UW( textStr + 1));
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break;
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case UNK_LE_255_CODE:
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objLength = (2 + (FLMUINT16)*(textStr + 1));
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break;
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case UNK_EQ_1_CODE:
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objLength = 2;
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break;
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case CHAR_SET_CODE:
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case EXT_CHAR_CODE:
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case OEM_CODE:
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case UNICODE_CODE:
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// Should not hit default.
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default:
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return( RC_SET( FERR_CONV_BAD_DIGIT));
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}
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}
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/* Interpret empty number or all zeroes as single zero */
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if( (!insideNum) && (!have1Num))
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{
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if( outputData)
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{
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if( (firstNibble) && (bytesOutput == maxOutLen))
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return( RC_SET( FERR_CONV_DEST_OVERFLOW));
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if( firstNibble)
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{
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*outPtr = 0x00;
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}
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else
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outPtr++;
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}
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if( firstNibble)
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bytesOutput++;
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firstNibble = !firstNibble;
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}
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/* Add Terminator code to the end of the number */
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if( outputData)
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{
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if( (firstNibble) && (bytesOutput == maxOutLen))
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return( RC_SET( FERR_CONV_DEST_OVERFLOW));
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if( firstNibble)
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*outPtr = 0xFF;
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else
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*outPtr = (FLMBYTE)(*outPtr + 0x0F);
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}
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if( firstNibble)
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bytesOutput++;
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*bufLenRV = bytesOutput;
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return( FERR_OK);
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}
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