FFStr.cc

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// -*- mode: c++; c-basic-offset:4 -*-

// This file is part of ff_handler a FreeForm API handler for the OPeNDAP
// DAP2 data server.

// Copyright (c) 2005 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This is free software; you can redistribute it and/or modify it under the
// terms of the GNU Lesser General Public License as published by the Free
// Software Foundation; either version 2.1 of the License, or (at your
// option) any later version.
//
// This software 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 Lesser General Public
// License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.

// (c) COPYRIGHT URI/MIT 1997-99
// Please read the full copyright statement in the file COPYRIGHT.
//
// Authors: reza (Reza Nekovei)

// FreeFrom sub-class implementation for FFByte,...FFGrid.
// The files are patterned after the subcalssing examples
// Test<type>.c,h files.
//
// ReZa 6/18/97

#include "config_ff.h"

#ifndef WIN32
#include <strings.h>
#endif

#include <ctype.h>
#include <string>
#include <cstring>

#include "FFStr.h"
#include "util.h"

extern long BufPtr;   // set by read functions
extern char * BufVal; // set by first call to sequence

FFStr::FFStr(const string &n, const string &d) : Str(n, d)
{
}

BaseType *
FFStr::ptr_duplicate()
{
    return new FFStr(*this);
}

bool
FFStr::read()
{
        if (read_p())                   // nothing to do
                return true;

        if (BufVal) { // Data in cache
                char * ptr = BufVal + BufPtr;

                // TODO Use vector? jhrg 8/19/14
                char *TmpBuf = new char[length() + 1];

                // This code prunes both trailing and leading spaces from strings.
                // Spaces are often added to URLs in file server data sets since the
                // URL length can vary but in FF a field is a fixed size. However, if
                // you want the FF handler to return _exactly_ the string data, this
                // should be turned off. Once the subject of much debate... jhrg

                int i, j;

                //remove trailing white space
                for (i = length() - 1; i >= 0; i--)
                        if (!isspace(*(ptr + i))) break;

                //remove leading white space
                for (j = 0; j < i; j++)
                        if (!isspace(*(ptr + j))) break;

                strncpy(TmpBuf, ptr + j, i - j + 1);
                TmpBuf[i - j + 1] = '\0';

                // Use set_value() jhrg 8/19/14
                set_value(TmpBuf);
#if 0
                string *Nstr = new string((const char *) TmpBuf);
                delete[] TmpBuf;

                val2buf(Nstr);
                delete Nstr;
#endif
                set_read_p(true);

                BufPtr += length();
                return true;
        }

        return false;
}