Xinlei Cao / MbedSmartRest

Own fork of MbedSmartRest

Dependents:   MbedSmartRestMain MbedSmartRestMain

Fork of MbedSmartRest by Cumulocity Official

ParsedValue.cpp@0:099f76422485, 2014-07-03 (annotated)

Committer:
Cumulocity
Date:
Thu Jul 03 20:38:04 2014 +0200
Revision:
0:099f76422485
Child:
7:8159a2d12e4e
Updated from revision 0413a0179eb6

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Cumulocity 0:099f76422485 1 /*
Cumulocity 0:099f76422485 2 * ParsedValue.cpp
Cumulocity 0:099f76422485 3 *
Cumulocity 0:099f76422485 4 * Created on: Nov 1, 2013
Cumulocity 0:099f76422485 5 * * Authors: Vincent Wochnik <v.wochnik@gmail.com>
Cumulocity 0:099f76422485 6 *
Cumulocity 0:099f76422485 7 * Copyright (c) 2013 Cumulocity GmbH
Cumulocity 0:099f76422485 8 *
Cumulocity 0:099f76422485 9 * Permission is hereby granted, free of charge, to any person obtaining
Cumulocity 0:099f76422485 10 * a copy of this software and associated documentation files (the
Cumulocity 0:099f76422485 11 * "Software"), to deal in the Software without restriction, including
Cumulocity 0:099f76422485 12 * without limitation the rights to use, copy, modify, merge, publish,
Cumulocity 0:099f76422485 13 * distribute, sublicense, and/or sell copies of the Software, and to
Cumulocity 0:099f76422485 14 * permit persons to whom the Software is furnished to do so, subject to
Cumulocity 0:099f76422485 15 * the following conditions:
Cumulocity 0:099f76422485 16 *
Cumulocity 0:099f76422485 17 * The above copyright notice and this permission notice shall be
Cumulocity 0:099f76422485 18 * included in all copies or substantial portions of the Software.
Cumulocity 0:099f76422485 19 *
Cumulocity 0:099f76422485 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
Cumulocity 0:099f76422485 21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Cumulocity 0:099f76422485 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Cumulocity 0:099f76422485 23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
Cumulocity 0:099f76422485 24 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
Cumulocity 0:099f76422485 25 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
Cumulocity 0:099f76422485 26 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Cumulocity 0:099f76422485 27 */
Cumulocity 0:099f76422485 28
Cumulocity 0:099f76422485 29 #include "ParsedValue.h"
Cumulocity 0:099f76422485 30 #include <stdlib.h>
Cumulocity 0:099f76422485 31 #include <string.h>
Cumulocity 0:099f76422485 32 #include <ctype.h>
Cumulocity 0:099f76422485 33 #include <errno.h>
Cumulocity 0:099f76422485 34 #include <math.h>
Cumulocity 0:099f76422485 35 #include "NullValue.h"
Cumulocity 0:099f76422485 36 #include "IntegerValue.h"
Cumulocity 0:099f76422485 37 #include "FloatValue.h"
Cumulocity 0:099f76422485 38 #include "CharValue.h"
Cumulocity 0:099f76422485 39
Cumulocity 0:099f76422485 40 ParsedValue::ParsedValue(const char *str, bool copy) : _value(str, copy), _float(0.0), _digits(0), _zflag(false), _integer(0l)
Cumulocity 0:099f76422485 41 {
Cumulocity 0:099f76422485 42 if (_value.valueType() != VALUE_NULL) {
Cumulocity 0:099f76422485 43 _type = VALUE_CHARACTER;
Cumulocity 0:099f76422485 44 extractValue();
Cumulocity 0:099f76422485 45 } else {
Cumulocity 0:099f76422485 46 _type = VALUE_NULL;
Cumulocity 0:099f76422485 47 }
Cumulocity 0:099f76422485 48 }
Cumulocity 0:099f76422485 49
Cumulocity 0:099f76422485 50 uint8_t ParsedValue::valueType() const
Cumulocity 0:099f76422485 51 {
Cumulocity 0:099f76422485 52 return _type;
Cumulocity 0:099f76422485 53 }
Cumulocity 0:099f76422485 54
Cumulocity 0:099f76422485 55 long ParsedValue::integerValue() const
Cumulocity 0:099f76422485 56 {
Cumulocity 0:099f76422485 57 return _integer;
Cumulocity 0:099f76422485 58 }
Cumulocity 0:099f76422485 59
Cumulocity 0:099f76422485 60 double ParsedValue::floatValue() const
Cumulocity 0:099f76422485 61 {
Cumulocity 0:099f76422485 62 return _float;
Cumulocity 0:099f76422485 63 }
Cumulocity 0:099f76422485 64
Cumulocity 0:099f76422485 65 const char * ParsedValue::characterValue() const
Cumulocity 0:099f76422485 66 {
Cumulocity 0:099f76422485 67 if (_type != VALUE_CHARACTER)
Cumulocity 0:099f76422485 68 return NULL;
Cumulocity 0:099f76422485 69 return _value.characterValue();
Cumulocity 0:099f76422485 70 }
Cumulocity 0:099f76422485 71
Cumulocity 0:099f76422485 72 size_t ParsedValue::write(AbstractDataSink& sink) const
Cumulocity 0:099f76422485 73 {
Cumulocity 0:099f76422485 74 return _value.write(sink);
Cumulocity 0:099f76422485 75 }
Cumulocity 0:099f76422485 76
Cumulocity 0:099f76422485 77 size_t ParsedValue::length() const
Cumulocity 0:099f76422485 78 {
Cumulocity 0:099f76422485 79 return _value.length();
Cumulocity 0:099f76422485 80 }
Cumulocity 0:099f76422485 81
Cumulocity 0:099f76422485 82 Value* ParsedValue::copy() const
Cumulocity 0:099f76422485 83 {
Cumulocity 0:099f76422485 84 if (_type == VALUE_NULL)
Cumulocity 0:099f76422485 85 return new NullValue();
Cumulocity 0:099f76422485 86 if (_type == VALUE_INTEGER)
Cumulocity 0:099f76422485 87 return new IntegerValue(_integer);
Cumulocity 0:099f76422485 88 if (_type == VALUE_FLOAT)
Cumulocity 0:099f76422485 89 return new FloatValue(_float, _digits, _zflag);
Cumulocity 0:099f76422485 90 return new CharValue(_value.characterValue(), true);
Cumulocity 0:099f76422485 91 }
Cumulocity 0:099f76422485 92
Cumulocity 0:099f76422485 93 void ParsedValue::extractValue()
Cumulocity 0:099f76422485 94 {
Cumulocity 0:099f76422485 95 const char *str; char *ptr, c;
Cumulocity 0:099f76422485 96 bool floating = false, zflag = false, negative = false;
Cumulocity 0:099f76422485 97 uint8_t digits = 0;
Cumulocity 0:099f76422485 98
Cumulocity 0:099f76422485 99 str = _value.characterValue();
Cumulocity 0:099f76422485 100
Cumulocity 0:099f76422485 101 if (isspace(*str))
Cumulocity 0:099f76422485 102 return;
Cumulocity 0:099f76422485 103
Cumulocity 0:099f76422485 104 // easy check for nan
Cumulocity 0:099f76422485 105 if (strcmp(str, "nan") == 0) {
Cumulocity 0:099f76422485 106 _float = NAN;
Cumulocity 0:099f76422485 107 _type = VALUE_FLOAT;
Cumulocity 0:099f76422485 108 return;
Cumulocity 0:099f76422485 109 }
Cumulocity 0:099f76422485 110
Cumulocity 0:099f76422485 111 if (*str == '-') {
Cumulocity 0:099f76422485 112 negative = true;
Cumulocity 0:099f76422485 113 str++;
Cumulocity 0:099f76422485 114 }
Cumulocity 0:099f76422485 115
Cumulocity 0:099f76422485 116 if (strcmp(str, "inf") == 0) {
Cumulocity 0:099f76422485 117 _float = (negative) ? -INFINITY : INFINITY;
Cumulocity 0:099f76422485 118 _type = VALUE_FLOAT;
Cumulocity 0:099f76422485 119 return;
Cumulocity 0:099f76422485 120 }
Cumulocity 0:099f76422485 121
Cumulocity 0:099f76422485 122 for (ptr = (char*)str; (c = *ptr) != 0; ptr++) {
Cumulocity 0:099f76422485 123 if (floating) {
Cumulocity 0:099f76422485 124 if (!isdigit(c))
Cumulocity 0:099f76422485 125 return;
Cumulocity 0:099f76422485 126 digits++;
Cumulocity 0:099f76422485 127 } else {
Cumulocity 0:099f76422485 128 if (c == '.') {
Cumulocity 0:099f76422485 129 if (*(ptr+1) == '\0')
Cumulocity 0:099f76422485 130 return;
Cumulocity 0:099f76422485 131 floating = true;
Cumulocity 0:099f76422485 132 } else if (isdigit(c)) {
Cumulocity 0:099f76422485 133 _zflag = true;
Cumulocity 0:099f76422485 134 } else {
Cumulocity 0:099f76422485 135 return;
Cumulocity 0:099f76422485 136 }
Cumulocity 0:099f76422485 137 }
Cumulocity 0:099f76422485 138 }
Cumulocity 0:099f76422485 139
Cumulocity 0:099f76422485 140 if (floating) {
Cumulocity 0:099f76422485 141 errno = 0;
Cumulocity 0:099f76422485 142 if ((((_float = strtod(str, &ptr)) != 0.0) || (errno == 0)) &&
Cumulocity 0:099f76422485 143 (*ptr == '\0')) {
Cumulocity 0:099f76422485 144 if (negative)
Cumulocity 0:099f76422485 145 _float = -_float;
Cumulocity 0:099f76422485 146 _zflag = zflag;
Cumulocity 0:099f76422485 147 _digits = digits;
Cumulocity 0:099f76422485 148 _type = VALUE_FLOAT;
Cumulocity 0:099f76422485 149 }
Cumulocity 0:099f76422485 150 } else {
Cumulocity 0:099f76422485 151 errno = 0;
Cumulocity 0:099f76422485 152 if ((((_integer = strtol(str, &ptr, 10)) != 0) || (errno == 0)) &&
Cumulocity 0:099f76422485 153 (*ptr == '\0')) {
Cumulocity 0:099f76422485 154 if (negative)
Cumulocity 0:099f76422485 155 _integer = -_integer;
Cumulocity 0:099f76422485 156 _type = VALUE_INTEGER;
Cumulocity 0:099f76422485 157 return;
Cumulocity 0:099f76422485 158 }
Cumulocity 0:099f76422485 159 }
Cumulocity 0:099f76422485 160 }