libdap Updated for version 3.20.11
libdap4 is an implementation of OPeNDAP's DAP protocol.
Int16.cc
1
2// -*- mode: c++; c-basic-offset:4 -*-
3
4// This file is part of libdap, A C++ implementation of the OPeNDAP Data
5// Access Protocol.
6
7// Copyright (c) 2002,2003 OPeNDAP, Inc.
8// Author: James Gallagher <jgallagher@opendap.org>
9//
10// This library is free software; you can redistribute it and/or
11// modify it under the terms of the GNU Lesser General Public
12// License as published by the Free Software Foundation; either
13// version 2.1 of the License, or (at your option) any later version.
14//
15// This library is distributed in the hope that it will be useful,
16// but WITHOUT ANY WARRANTY; without even the implied warranty of
17// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18// Lesser General Public License for more details.
19//
20// You should have received a copy of the GNU Lesser General Public
21// License along with this library; if not, write to the Free Software
22// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23//
24// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25
26// (c) COPYRIGHT URI/MIT 1996-1999
27// Please read the full copyright statement in the file COPYRIGHT_URI.
28//
29// Authors:
30// jhrg,jimg James Gallagher <jgallagher@gso.uri.edu>
31
32// Implementation for Int32.
33//
34// jhrg 9/7/94
35
36
37#include "config.h"
38
39#include <sstream>
40
41#include "Byte.h" // synonymous with UInt8 and Char
42#include "Int8.h"
43#include "Int16.h"
44#include "UInt16.h"
45#include "Int32.h"
46#include "UInt32.h"
47#include "Int64.h"
48#include "UInt64.h"
49#include "Float32.h"
50#include "Float64.h"
51#include "Str.h"
52#include "Url.h"
53
54#include "DDS.h"
55#include "Marshaller.h"
56#include "UnMarshaller.h"
57
58#include "DMR.h"
59#include "D4StreamMarshaller.h"
60#include "D4StreamUnMarshaller.h"
61
62#include "util.h"
63#include "parser.h"
64#include "Operators.h"
65#include "dods-limits.h"
66#include "debug.h"
67#include "InternalErr.h"
68#include "DapIndent.h"
69
70using std::cerr;
71using std::endl;
72
73namespace libdap {
74
79Int16::Int16(const string &n) : BaseType(n, dods_int16_c), d_buf(0)
80{}
81
89Int16::Int16(const string &n, const string &d) : BaseType(n, d, dods_int16_c), d_buf(0)
90{}
91
92Int16::Int16(const Int16 &copy_from) : BaseType(copy_from)
93{
94 d_buf = copy_from.d_buf;
95}
96
97BaseType *
99{
100 return new Int16(*this);
101}
102
103Int16 &
104Int16::operator=(const Int16 &rhs)
105{
106 if (this == &rhs)
107 return *this;
108 BaseType::operator=(rhs);
109 d_buf = rhs.d_buf;
110 return *this;
111}
112
113unsigned int
114Int16::width(bool) const
115{
116 return sizeof(dods_int16);
117}
118
119bool
121{
122#if USE_LOCAL_TIMEOUT_SCHEME
123 dds.timeout_on();
124#endif
125 if (!read_p())
126 read(); // read() throws Error and InternalErr
127
128 if (ce_eval && !eval.eval_selection(dds, dataset()))
129 return true;
130#if USE_LOCAL_TIMEOUT_SCHEME
131 dds.timeout_off();
132#endif
133 m.put_int16( d_buf ) ;
134
135 return true;
136}
137
138bool
140{
141 um.get_int16( d_buf ) ;
142
143 return false;
144}
145
146void
148{
149 checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
150}
151
160void
161Int16::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
162{
163 if (!read_p())
164 read(); // read() throws Error
165
166 m.put_int16( d_buf ) ;
167}
168
169void
171{
172 um.get_int16( d_buf ) ;
173}
174
175unsigned int
176Int16::val2buf(void *val, bool)
177{
178 // Jose Garcia
179 // This method is public therefore and I believe it has being designed
180 // to be use by read which must be implemented on the surrogated library,
181 // thus if the pointer val is NULL, is an Internal Error.
182 if (!val)
183 throw InternalErr(__FILE__, __LINE__,
184 "The incoming pointer does not contain any data.");
185
186 d_buf = *(dods_int16 *)val;
187
188 return width();
189}
190
191unsigned int
192Int16::buf2val(void **val)
193{
194 // Jose Garcia
195 // The same comment justifying throwing an Error in val2buf applies here.
196 if (!val)
197 throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
198
199 if (!*val)
200 *val = new dods_int16;
201
202 *(dods_int16 *)*val = d_buf;
203
204 return width();
205}
206
207dods_int16
208Int16::value() const
209{
210 return d_buf;
211}
212
213bool
214Int16::set_value(dods_int16 i)
215{
216 d_buf = i;
217 set_read_p(true);
218
219 return true;
220}
221
222void
223Int16::print_val(FILE *out, string space, bool print_decl_p)
224{
225 ostringstream oss;
226 print_val(oss, space, print_decl_p);
227 fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
228}
229
230void
231Int16::print_val(ostream &out, string space, bool print_decl_p)
232{
233 if (print_decl_p) {
234 print_decl(out, space, false);
235 out << " = " << d_buf << ";\n" ;
236 }
237 else
238 out << d_buf ;
239}
240
241bool
243{
244
245 // Extract the Byte arg's value.
246 if (!read_p() && !read()) {
247 // Jose Garcia
248 // Since the read method is virtual and implemented outside
249 // libdap++ if we cannot read the data that is the problem
250 // of the user or of whoever wrote the surrogate library
251 // implemeting read therefore it is an internal error.
252 throw InternalErr(__FILE__, __LINE__, "This value not read!");
253 }
254
255 // Extract the second arg's value.
256 if (!b || !(b->read_p() || b->read())) {
257 // Jose Garcia
258 // Since the read method is virtual and implemented outside
259 // libdap++ if we cannot read the data that is the problem
260 // of the user or of whoever wrote the surrogate library
261 // implemeting read therefore it is an internal error.
262 throw InternalErr(__FILE__, __LINE__, "This value not read!");
263 }
264
265 return d4_ops(b, op);
266}
267
271bool Int16::d4_ops(BaseType *b, int op)
272{
273 switch (b->type()) {
274 case dods_int8_c:
275 return Cmp<dods_int16, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
276 case dods_byte_c:
277 return Cmp<dods_int16, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
278 case dods_int16_c:
279 return Cmp<dods_int16, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
280 case dods_uint16_c:
281 return Cmp<dods_int16, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
282 case dods_int32_c:
283 return Cmp<dods_int16, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
284 case dods_uint32_c:
285 return Cmp<dods_int16, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
286 case dods_int64_c:
287 return Cmp<dods_int16, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
288 case dods_uint64_c:
289 return Cmp<dods_int16, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
290 case dods_float32_c:
291 return Cmp<dods_int16, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
292 case dods_float64_c:
293 return Cmp<dods_int16, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
294 case dods_str_c:
295 case dods_url_c:
296 throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");
297 default:
298 throw Error(malformed_expr, "Relational operators only work with scalar types.");
299 }
300}
301
310void
311Int16::dump(ostream &strm) const
312{
313 strm << DapIndent::LMarg << "Int16::dump - ("
314 << (void *)this << ")" << endl ;
315 DapIndent::Indent() ;
316 BaseType::dump(strm) ;
317 strm << DapIndent::LMarg << "value: " << d_buf << endl ;
318 DapIndent::UnIndent() ;
319}
320
321} // namespace libdap
322
Definition: crc.h:77
void AddData(const uint8_t *pData, const uint32_t length)
Definition: crc.h:98
The basic data type for the DODS DAP types.
Definition: BaseType.h:118
virtual bool read()
Read data into a local buffer.
Definition: BaseType.cc:895
virtual void print_decl(FILE *out, string space=" ", bool print_semi=true, bool constraint_info=false, bool constrained=false)
Print an ASCII representation of the variable structure.
Definition: BaseType.cc:999
virtual bool read_p()
Has this variable been read?
Definition: BaseType.cc:476
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition: BaseType.cc:512
virtual string dataset() const
Returns the name of the dataset used to create this instance.
Definition: BaseType.cc:354
void dump(ostream &strm) const override
dumps information about this object
Definition: BaseType.cc:287
virtual Type type() const
Returns the type of the class instance.
Definition: BaseType.cc:361
Holds a single byte.
Definition: Byte.h:61
Evaluate a constraint expression.
bool eval_selection(DDS &dds, const std::string &dataset)
Evaluate a boolean-valued constraint expression. This is main method for the evaluator and is called ...
Marshaller that knows how to marshal/serialize dap data objects to a C++ iostream using DAP4's receiv...
Read data from the stream made by D4StreamMarshaller.
A class for error processing.
Definition: Error.h:94
Holds a 32-bit floating point value.
Definition: Float32.h:62
Holds a 64-bit (double precision) floating point value.
Definition: Float64.h:61
Holds a 16-bit signed integer value.
Definition: Int16.h:60
virtual void print_val(FILE *out, string space="", bool print_decl_p=true)
Prints the value of the variable.
Definition: Int16.cc:223
virtual BaseType * ptr_duplicate()
Definition: Int16.cc:98
virtual bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false)
Receive data from the net.
Definition: Int16.cc:139
virtual void dump(ostream &strm) const
dumps information about this object
Definition: Int16.cc:311
virtual bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval=true)
Move data to the net, then remove them from the object.
Definition: Int16.cc:120
virtual unsigned int width(bool constrained=false) const
How many bytes does this variable use Return the number of bytes of storage this variable uses....
Definition: Int16.cc:114
virtual unsigned int buf2val(void **val)
Reads the class data.
Definition: Int16.cc:192
Int16(const string &n)
Definition: Int16.cc:79
virtual void compute_checksum(Crc32 &checksum)
include the data for this variable in the checksum DAP4 includes a checksum with every data response....
Definition: Int16.cc:147
virtual unsigned int val2buf(void *val, bool reuse=false)
Loads class data.
Definition: Int16.cc:176
virtual bool ops(BaseType *b, int op)
Evaluate relational operators.
Definition: Int16.cc:242
virtual bool d4_ops(BaseType *b, int op)
Definition: Int16.cc:271
Holds a 32-bit signed integer.
Definition: Int32.h:66
Holds a64-bit signed integer.
Definition: Int64.h:50
Holds an 8-bit signed integer value.
Definition: Int8.h:43
A class for software fault reporting.
Definition: InternalErr.h:65
abstract base class used to marshal/serialize dap data objects
Definition: Marshaller.h:50
Holds an unsigned 16-bit integer.
Definition: UInt16.h:58
Holds a 32-bit unsigned integer.
Definition: UInt32.h:60
Holds a 64-bit unsigned integer.
Definition: UInt64.h:50
abstract base class used to unmarshall/deserialize dap data objects
Definition: UnMarshaller.h:55
top level DAP object to house generic methods
Definition: AlarmHandler.h:36