1                 : /******************************************************************************
       2                 :  * $Id: ddfutils.cpp 10645 2007-01-18 02:22:39Z warmerdam $
       3                 :  *
       4                 :  * Project:  ISO 8211 Access
       5                 :  * Purpose:  Various utility functions.
       6                 :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       7                 :  *
       8                 :  ******************************************************************************
       9                 :  * Copyright (c) 1999, Frank Warmerdam
      10                 :  *
      11                 :  * Permission is hereby granted, free of charge, to any person obtaining a
      12                 :  * copy of this software and associated documentation files (the "Software"),
      13                 :  * to deal in the Software without restriction, including without limitation
      14                 :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      15                 :  * and/or sell copies of the Software, and to permit persons to whom the
      16                 :  * Software is furnished to do so, subject to the following conditions:
      17                 :  *
      18                 :  * The above copyright notice and this permission notice shall be included
      19                 :  * in all copies or substantial portions of the Software.
      20                 :  *
      21                 :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      22                 :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      23                 :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      24                 :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      25                 :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      26                 :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      27                 :  * DEALINGS IN THE SOFTWARE.
      28                 :  ****************************************************************************/
      29                 : 
      30                 : #include "iso8211.h"
      31                 : #include "cpl_conv.h"
      32                 : 
      33                 : CPL_CVSID("$Id: ddfutils.cpp 10645 2007-01-18 02:22:39Z warmerdam $");
      34                 : 
      35                 : /************************************************************************/
      36                 : /*                             DDFScanInt()                             */
      37                 : /*                                                                      */
      38                 : /*      Read up to nMaxChars from the passed string, and interpret      */
      39                 : /*      as an integer.                                                  */
      40                 : /************************************************************************/
      41                 : 
      42            9574 : long DDFScanInt( const char * pszString, int nMaxChars )
      43                 : 
      44                 : {
      45                 :     char        szWorking[33];
      46                 : 
      47            9574 :     if( nMaxChars > 32 || nMaxChars == 0 )
      48               0 :         nMaxChars = 32;
      49                 : 
      50            9574 :     memcpy( szWorking, pszString, nMaxChars );
      51            9574 :     szWorking[nMaxChars] = '\0';
      52                 : 
      53            9574 :     return( atoi(szWorking) );
      54                 : }
      55                 : 
      56                 : /************************************************************************/
      57                 : /*                          DDFScanVariable()                           */
      58                 : /*                                                                      */
      59                 : /*      Establish the length of a variable length string in a           */
      60                 : /*      record.                                                         */
      61                 : /************************************************************************/
      62                 : 
      63               0 : int DDFScanVariable( const char *pszRecord, int nMaxChars, int nDelimChar )
      64                 : 
      65                 : {
      66                 :     int         i;
      67                 :     
      68               0 :     for( i = 0; i < nMaxChars-1 && pszRecord[i] != nDelimChar; i++ ) {}
      69                 : 
      70               0 :     return i;
      71                 : }
      72                 : 
      73                 : /************************************************************************/
      74                 : /*                          DDFFetchVariable()                          */
      75                 : /*                                                                      */
      76                 : /*      Fetch a variable length string from a record, and allocate      */
      77                 : /*      it as a new string (with CPLStrdup()).                          */
      78                 : /************************************************************************/
      79                 : 
      80                 : char * DDFFetchVariable( const char *pszRecord, int nMaxChars,
      81                 :                          int nDelimChar1, int nDelimChar2,
      82            1416 :                          int *pnConsumedChars )
      83                 : 
      84                 : {
      85                 :     int         i;
      86                 :     char        *pszReturn;
      87                 : 
      88            1416 :     for( i = 0; i < nMaxChars-1 && pszRecord[i] != nDelimChar1
      89                 :                                 && pszRecord[i] != nDelimChar2; i++ ) {}
      90                 : 
      91            1416 :     *pnConsumedChars = i;
      92            1416 :     if( i < nMaxChars
      93                 :         && (pszRecord[i] == nDelimChar1 || pszRecord[i] == nDelimChar2) )
      94            1303 :         (*pnConsumedChars)++;
      95                 : 
      96            1416 :     pszReturn = (char *) CPLMalloc(i+1);
      97            1416 :     pszReturn[i] = '\0';
      98            1416 :     strncpy( pszReturn, pszRecord, i );
      99                 : 
     100            1416 :     return pszReturn;
     101                 : }