C++ (Cpp) OGR_SRSNode::importFromWkt Examples

Example #1

File: ogr_srsnode.cpp Project: nvdnkpr/node-srs

OGRErr OGR_SRSNode::importFromWkt( char ** ppszInput, int nRecLevel, int* pnNodes )

{
    const char  *pszInput = *ppszInput;
    int         bInQuotedString = FALSE;

    /* Sanity checks */
    if( nRecLevel == 10 )
    {
        return OGRERR_CORRUPT_DATA;
    }
    if( *pnNodes == 1000 )
    {
        return OGRERR_CORRUPT_DATA;
    }
    
/* -------------------------------------------------------------------- */
/*      Clear any existing children of this node.                       */
/* -------------------------------------------------------------------- */
    ClearChildren();
    
/* -------------------------------------------------------------------- */
/*      Read the ``value'' for this node.                               */
/* -------------------------------------------------------------------- */
    char        szToken[512];
    int         nTokenLen = 0;
    
    while( *pszInput != '\0' && nTokenLen < (int) sizeof(szToken)-1 )
    {
        if( *pszInput == '"' )
        {
            bInQuotedString = !bInQuotedString;
        }
        else if( !bInQuotedString
              && (*pszInput == '[' || *pszInput == ']' || *pszInput == ','
                  || *pszInput == '(' || *pszInput == ')' ) )
        {
            break;
        }
        else if( !bInQuotedString 
                 && (*pszInput == ' ' || *pszInput == '\t' 
                     || *pszInput == 10 || *pszInput == 13) )
        {
            /* just skip over whitespace */
        } 
        else
        {
            szToken[nTokenLen++] = *pszInput;
        }

        pszInput++;
    }

    if( *pszInput == '\0' || nTokenLen == sizeof(szToken) - 1 )
        return OGRERR_CORRUPT_DATA;

    szToken[nTokenLen++] = '\0';
    SetValue( szToken );

/* -------------------------------------------------------------------- */
/*      Read children, if we have a sublist.                            */
/* -------------------------------------------------------------------- */
    if( *pszInput == '[' || *pszInput == '(' )
    {
        do
        {
            OGR_SRSNode *poNewChild;
            OGRErr      eErr;

            pszInput++; // Skip bracket or comma.

            poNewChild = new OGR_SRSNode();

            (*pnNodes) ++;
            eErr = poNewChild->importFromWkt( (char **) &pszInput, nRecLevel + 1, pnNodes );
            if( eErr != OGRERR_NONE )
            {
                delete poNewChild;
                return eErr;
            }

            AddChild( poNewChild );
            
            // swallow whitespace
            while( isspace(*pszInput) ) 
                pszInput++;

        } while( *pszInput == ',' );

        if( *pszInput != ')' && *pszInput != ']' )
            return OGRERR_CORRUPT_DATA;

        pszInput++;
    }

    *ppszInput = (char *) pszInput;

    return OGRERR_NONE;
}

Example #2

OGRErr OGR_SRSNode::importFromWkt( char ** ppszInput )

{
    const char  *pszInput = *ppszInput;
    int         bInQuotedString = FALSE;
    
/* -------------------------------------------------------------------- */
/*      Clear any existing children of this node.                       */
/* -------------------------------------------------------------------- */
    ClearChildren();
    
/* -------------------------------------------------------------------- */
/*      Read the ``value'' for this node.                               */
/* -------------------------------------------------------------------- */
    char        szToken[512];
    int         nTokenLen = 0;
    
    while( *pszInput != '\0' && nTokenLen < (int) sizeof(szToken)-1 )
    {
        if( *pszInput == '"' )
        {
            bInQuotedString = !bInQuotedString;
        }
        else if( !bInQuotedString
              && (*pszInput == '[' || *pszInput == ']' || *pszInput == ','
                  || *pszInput == '(' || *pszInput == ')' ) )
        {
            break;
        }
        else
        {
            szToken[nTokenLen++] = *pszInput;
        }

        pszInput++;
    }

    if( *pszInput == '\0' || nTokenLen == sizeof(szToken) - 1 )
        return OGRERR_CORRUPT_DATA;

    szToken[nTokenLen++] = '\0';
    SetValue( szToken );

/* -------------------------------------------------------------------- */
/*      Read children, if we have a sublist.                            */
/* -------------------------------------------------------------------- */
    if( *pszInput == '[' || *pszInput == '(' )
    {
        do
        {
            OGR_SRSNode *poNewChild;
            OGRErr      eErr;

            pszInput++; // Skip bracket or comma.

            poNewChild = new OGR_SRSNode();

            eErr = poNewChild->importFromWkt( (char **) &pszInput );
            if( eErr != OGRERR_NONE )
                return eErr;

            AddChild( poNewChild );
            
        } while( *pszInput == ',' );

        if( *pszInput != ')' && *pszInput != ']' )
            return OGRERR_CORRUPT_DATA;

        pszInput++;
    }

    *ppszInput = (char *) pszInput;

    return OGRERR_NONE;
}