libdap Updated for version 3.21.0
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
113bool
115{
116#if USE_LOCAL_TIMEOUT_SCHEME
117 dds.timeout_on();
118#endif
119 if (!read_p())
120 read(); // read() throws Error and InternalErr
121
122 if (ce_eval && !eval.eval_selection(dds, dataset()))
123 return true;
124#if USE_LOCAL_TIMEOUT_SCHEME
125 dds.timeout_off();
126#endif
127 m.put_int16( d_buf ) ;
128
129 return true;
130}
131
132bool
134{
135 um.get_int16( d_buf ) ;
136
137 return false;
138}
139
140void
142{
143 checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
144}
145
154void
155Int16::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
156{
157 if (!read_p())
158 read(); // read() throws Error
159
160 m.put_int16( d_buf ) ;
161}
162
163void
165{
166 um.get_int16( d_buf ) ;
167}
168
169unsigned int
170Int16::val2buf(void *val, bool)
171{
172 // Jose Garcia
173 // This method is public therefore and I believe it has being designed
174 // to be use by read which must be implemented on the surrogated library,
175 // thus if the pointer val is NULL, is an Internal Error.
176 if (!val)
177 throw InternalErr(__FILE__, __LINE__,
178 "The incoming pointer does not contain any data.");
179
180 d_buf = *(dods_int16 *)val;
181
182 return width();
183}
184
185unsigned int
186Int16::buf2val(void **val)
187{
188 // Jose Garcia
189 // The same comment justifying throwing an Error in val2buf applies here.
190 if (!val)
191 throw InternalErr(__FILE__, __LINE__, "NULL pointer.");
192
193 if (!*val)
194 *val = new dods_int16;
195
196 *(dods_int16 *)*val = d_buf;
197
198 return width();
199}
200
201dods_int16
202Int16::value() const
203{
204 return d_buf;
205}
206
207bool
208Int16::set_value(dods_int16 i)
209{
210 d_buf = i;
211 set_read_p(true);
212
213 return true;
214}
215
216void
217Int16::print_val(FILE *out, string space, bool print_decl_p)
218{
219 ostringstream oss;
220 print_val(oss, space, print_decl_p);
221 fwrite(oss.str().data(), sizeof(char), oss.str().length(), out);
222}
223
224void
225Int16::print_val(ostream &out, string space, bool print_decl_p)
226{
227 if (print_decl_p) {
228 print_decl(out, space, false);
229 out << " = " << d_buf << ";\n" ;
230 }
231 else
232 out << d_buf ;
233}
234
235bool
237{
238
239 // Extract the Byte arg's value.
240 if (!read_p() && !read()) {
241 // Jose Garcia
242 // Since the read method is virtual and implemented outside
243 // libdap++ if we cannot read the data that is the problem
244 // of the user or of whoever wrote the surrogate library
245 // implemeting read therefore it is an internal error.
246 throw InternalErr(__FILE__, __LINE__, "This value not read!");
247 }
248
249 // Extract the second arg's value.
250 if (!b || !(b->read_p() || b->read())) {
251 // Jose Garcia
252 // Since the read method is virtual and implemented outside
253 // libdap++ if we cannot read the data that is the problem
254 // of the user or of whoever wrote the surrogate library
255 // implemeting read therefore it is an internal error.
256 throw InternalErr(__FILE__, __LINE__, "This value not read!");
257 }
258
259 return d4_ops(b, op);
260}
261
265bool Int16::d4_ops(BaseType *b, int op)
266{
267 switch (b->type()) {
268 case dods_int8_c:
269 return Cmp<dods_int16, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
270 case dods_byte_c:
271 return Cmp<dods_int16, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
272 case dods_int16_c:
273 return Cmp<dods_int16, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
274 case dods_uint16_c:
275 return Cmp<dods_int16, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
276 case dods_int32_c:
277 return Cmp<dods_int16, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
278 case dods_uint32_c:
279 return Cmp<dods_int16, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
280 case dods_int64_c:
281 return Cmp<dods_int16, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
282 case dods_uint64_c:
283 return Cmp<dods_int16, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
284 case dods_float32_c:
285 return Cmp<dods_int16, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
286 case dods_float64_c:
287 return Cmp<dods_int16, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
288 case dods_str_c:
289 case dods_url_c:
290 throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");
291 default:
292 throw Error(malformed_expr, "Relational operators only work with scalar types.");
293 }
294}
295
304void
305Int16::dump(ostream &strm) const
306{
307 strm << DapIndent::LMarg << "Int16::dump - ("
308 << (void *)this << ")" << endl ;
309 DapIndent::Indent() ;
310 BaseType::dump(strm) ;
311 strm << DapIndent::LMarg << "value: " << d_buf << endl ;
312 DapIndent::UnIndent() ;
313}
314
315} // namespace libdap
316
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:120
virtual bool read()
Read data into a local buffer.
Definition BaseType.cc:905
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:1009
virtual bool read_p()
Has this variable been read?
Definition BaseType.cc:477
virtual void set_read_p(bool state)
Sets the value of the read_p property.
Definition BaseType.cc:513
virtual string dataset() const
Returns the name of the dataset used to create this instance.
Definition BaseType.cc:355
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:362
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
void print_val(FILE *out, string space="", bool print_decl_p=true) override
Prints the value of the variable.
Definition Int16.cc:217
unsigned int width(bool=false) const override
How many bytes does this variable use Return the number of bytes of storage this variable uses....
Definition Int16.h:76
unsigned int buf2val(void **val) override
Reads the class data.
Definition Int16.cc:186
void dump(ostream &strm) const override
dumps information about this object
Definition Int16.cc:305
BaseType * ptr_duplicate() override
Definition Int16.cc:98
Int16(const string &n)
Definition Int16.cc:79
bool deserialize(UnMarshaller &um, DDS *dds, bool reuse=false) override
Receive data from the net.
Definition Int16.cc:133
bool d4_ops(BaseType *b, int op) override
Definition Int16.cc:265
bool ops(BaseType *b, int op) override
Evaluate relational operators.
Definition Int16.cc:236
unsigned int val2buf(void *val, bool reuse=false) override
Loads class data.
Definition Int16.cc:170
void compute_checksum(Crc32 &checksum) override
include the data for this variable in the checksum DAP4 includes a checksum with every data response....
Definition Int16.cc:141
bool serialize(ConstraintEvaluator &eval, DDS &dds, Marshaller &m, bool ce_eval=true) override
Move data to the net, then remove them from the object.
Definition Int16.cc:114
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
top level DAP object to house generic methods
Definition AISConnect.cc:30