Str.h
// -*- mode: c++; c-basic-offset:4 -*-
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
// Copyright (c) 2002,2003 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library 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 library 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 1995-1999
// Please read the full copyright statement in the file COPYRIGHT_URI.
//
// Authors:
// jhrg,jimg James Gallagher <jgallagher@gso.uri.edu>
// Interface for Str type.
//
// jhrg 9/7/94
#ifndef _str_h
#define _str_h 1
#include <string>
#include "BaseType.h"
#include "dods-limits.h"
namespace libdap {
// max_str_len should be large since we always send strings with length bytes
// as a prefix (so xdr_string will always know how much memory to malloc) but
// if deserialize gets confused and thinks a ctor (in particular) is a string
// xdr_string in turn will max_str_len if it cannot get a length byte. A long
// term solution is to fix libdap, but strings should not routinely be > 32k
// for the time being... jhrg 4/30/97
const unsigned int max_str_len = DODS_USHRT_MAX - 1;
class Str : public BaseType {
protected:
string d_buf;
public:
Str(const string &n);
Str(const string &n, const string &d);
virtual ~Str() {}
Str(const Str &copy_from);
Str &operator=(const Str &rhs);
BaseType *ptr_duplicate() override;
unsigned int width(bool = false) const override { return sizeof(string); }
int64_t width_ll(bool = false) const override { return sizeof(string); }
// Return the length of the stored string or zero if no string has been
// stored in the instance's internal buffer.
int length() const override;
int64_t length_ll() const override;
// DAP2
bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval = true) override;
bool deserialize(UnMarshaller &um, DDS *dds, bool reuse = false) override;
// DAP4
void compute_checksum(Crc32 &checksum) override;
void serialize(D4StreamMarshaller &m, DMR &dmr, /*ConstraintEvaluator &eval,*/ bool filter = false) override;
void deserialize(D4StreamUnMarshaller &um, DMR &dmr) override;
unsigned int val2buf(void *val, bool reuse = false) override;
unsigned int buf2val(void **val) override;
virtual bool set_value(const string &value);
virtual string value() const;
virtual string esc_string_variable_value(const string &s);
void print_val(FILE *out, string space = "", bool print_decl_p = true) override;
void print_val(ostream &out, string space = "", bool print_decl_p = true) override;
bool ops(BaseType *b, int op) override;
bool d4_ops(BaseType *b, int op) override;
void dump(ostream &strm) const override;
};
} // namespace libdap
#endif // _str_h
BaseType
Crc32
Definition crc.h:45
libdap::ConstraintEvaluator
Evaluate a constraint expression.
Definition ConstraintEvaluator.h:41
libdap::D4StreamMarshaller
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiv...
Definition D4StreamMarshaller.h:71
libdap::D4StreamUnMarshaller
Read data from the stream made by D4StreamMarshaller.
Definition D4StreamUnMarshaller.h:65
libdap::DDS
Definition DDS.h:176
libdap::DMR
Definition DMR.h:56
libdap::Marshaller
abstract base class used to marshal/serialize dap data objects
Definition Marshaller.h:50
libdap::Str::buf2val
unsigned int buf2val(void **val) override
Definition Str.cc:177
libdap::Str::Str
Str(const string &n)
Definition Str.cc:91
libdap::Str::d4_ops
bool d4_ops(BaseType *b, int op) override
Definition Str.cc:281
libdap::Str::value
virtual string value() const
Definition Str.cc:228
libdap::Str::dump
void dump(ostream &strm) const override
dumps information about this object
Definition Str.cc:311
libdap::Str::val2buf
unsigned int val2buf(void *val, bool reuse=false) override
Definition Str.cc:202
libdap::Str::set_value
virtual bool set_value(const string &value)
Definition Str.cc:219
libdap::Str::esc_string_variable_value
virtual string esc_string_variable_value(const string &s)
Escape non-printable characters and quotes from a Str variable value. The value printed is used mostl...
Definition Str.cc:243
libdap::UnMarshaller
abstract base class used to unmarshall/deserialize dap data objects
Definition UnMarshaller.h:53
libdap
top level DAP object to house generic methods
Definition AlarmHandler.h:35
libdap::ptr_duplicate
virtual BaseType * ptr_duplicate()=0
libdap::length_ll
virtual int64_t length_ll() const
Get the number of elements in this variable This version of the function deprecates length() which is...
Definition BaseType.h:216
libdap::length
virtual int length() const
How many elements are in this variable? Uses -1 in places.
Definition BaseType.h:207