1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
// -*- mode: c++; c-basic-offset:4 -*-
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
// Copyright (c) 2013 OPeNDAP, Inc.
// Authors: Nathan Potter <npotter@opendap.org>
// 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.
#include "config.h"
#include <BaseType.h>
#include <TestFloat64.h>
#include <TestStr.h>
#include <TestArray.h>
#include <Error.h>
#include <DDS.h>
#include "DMR.h"
#include "D4RValue.h"
#include <debug.h>
#include <util.h>
#include "D4TestFunction.h"
namespace libdap {
/**
* @brief scale a scalar or array variable
* This does not work for DAP2 Grids; only Array and scalar variables.
*/
void
function_scale_dap2(int argc, BaseType * argv[], DDS &, BaseType **btpp)
{
string info =
string("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n") +
"<function name=\"scale\" version=\"1.1\" href=\"http://docs.opendap.org/index.php/Server_Side_Processing_Functions\">\n" +
"</function>";
if (argc == 0) {
Str *response = new TestStr("info");
response->set_value(info);
*btpp = response;
return;
}
// Check for 2 arguments
DBG(cerr << "argc = " << argc << endl);
if (argc != 2)
throw Error(malformed_expr,"Wrong number of arguments to scale().");
double m = extract_double_value(argv[1]);
DBG(cerr << "m: " << m << << endl);
// Read the data, scale and return the result.
BaseType *dest = 0;
double *data;
if (argv[0]->is_vector_type()) {
TestArray &source = static_cast<TestArray&>(*argv[0]);
source.read();
data = extract_double_array(&source);
int length = source.length();
for (int i = 0; i < length; ++i)
data[i] = data[i] * m;
Array *result = new TestArray(source);
result->add_var_nocopy(new TestFloat64(source.name()));
result->set_value(data, length);
delete[] data; // set_value copies.
dest = result;
}
else if (argv[0]->is_simple_type() && !(argv[0]->type() == dods_str_c || argv[0]->type() == dods_url_c)) {
argv[0]->read();
double data = extract_double_value(argv[0]);
data *= m;
Float64 *fdest = new TestFloat64(argv[0]->name());
fdest->set_value(data);
dest = fdest;
}
else {
throw Error(malformed_expr,"The scale() function works only for Arrays and scalars.");
}
*btpp = dest;
return;
}
/**
* @brief DAP4 scale a scalar or array variable
* This does not work for DAP2 Grids; only Array and scalar variables.
*/
BaseType *
function_scale_dap4(D4RValueList *args, DMR &dmr)
{
string info =
string("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n") +
"<function name=\"scale\" version=\"1.1\" href=\"http://docs.opendap.org/index.php/Server_Side_Processing_Functions\">\n" +
"</function>";
// DAP4 function porting information: in place of 'argc' use 'args.size()'
if (args->size() == 0) {
Str *response = new TestStr("info");
response->set_value(info);
// DAP4 function porting: return a BaseType* instead of using the value-result parameter
return response;
}
// Check for 2 arguments
DBG(cerr << "args.size() = " << args.size() << endl);
if (args->size() != 2)
throw Error(malformed_expr, "Wrong number of arguments to scale().");
// DAP4 function porting information: in place of 'argv[n]' use args->get_rvalue(n)->value(dmr)
// where 'n' is between 0 and args.size()-1. The line below is the DAP4 equivalent of 'argv[1].'
double m = extract_double_value(args->get_rvalue(1)->value(dmr));
DBG(cerr << "m: " << m << << endl);
// Read the data, scale and return the result.
//BaseType *dest = 0;
double *data;
BaseType *arg0 = args->get_rvalue(0)->value(dmr); // DAP4 function porting: ... 'argv[0]'
if (arg0->is_vector_type()) {
Array *source = dynamic_cast<Array*>(arg0);
if (!source)
throw Error(malformed_expr, string("Expected an Array as an argument, but got '"
+ arg0->type_name()) + "' instead.");
if (!source->read_p())
source->read();
data = extract_double_array(source);
int length = source->length();
for (int i = 0; i < length; ++i)
data[i] = data[i] * m;
Array *result = new Array(*source);
result->add_var_nocopy(new Float64(source->name()));
result->set_value(data, length);
delete[] data; // set_value copies.
// DAP4 function porting: return a BaseType* instead of using the value-result parameter
return result;
}
else if (arg0->is_simple_type() && !(arg0->type() == dods_str_c || arg0->type() == dods_url_c)) {
arg0->read();
double data = extract_double_value(arg0);
data *= m;
Float64 *fdest = new TestFloat64(arg0->name());
fdest->set_value(data);
return fdest;
}
else {
throw Error(malformed_expr,"The scale() function works only for numerical arrays and scalars.");
}
}
} // namesspace libdap
|
