Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  ISO 8211 Access
       4             :  * Purpose:  Various utility functions.
       5             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 1999, Frank Warmerdam
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "cpl_port.h"
      14             : #include "iso8211.h"
      15             : 
      16             : #include <cstdlib>
      17             : #include <cstring>
      18             : 
      19             : #include "cpl_conv.h"
      20             : 
      21             : /************************************************************************/
      22             : /*                             DDFScanInt()                             */
      23             : /*                                                                      */
      24             : /*      Read up to nMaxChars from the passed string, and interpret      */
      25             : /*      as an integer.                                                  */
      26             : /************************************************************************/
      27             : 
      28       24112 : int DDFScanInt(const char *pszString, int nMaxChars)
      29             : 
      30             : {
      31       24112 :     char szWorking[33] = {};
      32             : 
      33       24112 :     if (nMaxChars > 32 || nMaxChars == 0)
      34           0 :         nMaxChars = 32;
      35             : 
      36       24112 :     memcpy(szWorking, pszString, nMaxChars);
      37       24112 :     szWorking[nMaxChars] = '\0';
      38             : 
      39       24112 :     return atoi(szWorking);
      40             : }
      41             : 
      42             : /************************************************************************/
      43             : /*                          DDFScanVariable()                           */
      44             : /*                                                                      */
      45             : /*      Establish the length of a variable length string in a           */
      46             : /*      record.                                                         */
      47             : /************************************************************************/
      48             : 
      49           0 : int DDFScanVariable(const char *pszRecord, int nMaxChars, int nDelimChar)
      50             : 
      51             : {
      52           0 :     int i = 0;  // Used after for.
      53             : 
      54           0 :     for (; i < nMaxChars - 1 && pszRecord[i] != nDelimChar; i++)
      55             :     {
      56             :     }
      57             : 
      58           0 :     return i;
      59             : }
      60             : 
      61             : /************************************************************************/
      62             : /*                          DDFFetchVariable()                          */
      63             : /*                                                                      */
      64             : /*      Fetch a variable length string from a record, and allocate      */
      65             : /*      it as a new string (with CPLStrdup()).                          */
      66             : /************************************************************************/
      67             : 
      68        5868 : char *DDFFetchVariable(const char *pszRecord, int nMaxChars, int nDelimChar1,
      69             :                        int nDelimChar2, int *pnConsumedChars)
      70             : 
      71             : {
      72        5868 :     int i = 0;  // Used after for.
      73      139383 :     for (; i < nMaxChars - 1 && pszRecord[i] != nDelimChar1 &&
      74      133515 :            pszRecord[i] != nDelimChar2;
      75             :          i++)
      76             :     {
      77             :     }
      78             : 
      79        5868 :     *pnConsumedChars = i;
      80        5868 :     if (i < nMaxChars &&
      81        5527 :         (pszRecord[i] == nDelimChar1 || pszRecord[i] == nDelimChar2))
      82        5527 :         (*pnConsumedChars)++;
      83             : 
      84        5868 :     char *pszReturn = static_cast<char *>(CPLMalloc(i + 1));
      85        5868 :     pszReturn[i] = '\0';
      86        5868 :     strncpy(pszReturn, pszRecord, i);
      87             : 
      88        5868 :     return pszReturn;
      89             : }