Own fork of MbedSmartRest
Dependents: MbedSmartRestMain MbedSmartRestMain
Fork of MbedSmartRest by
Diff: ParsedValue.cpp
- Revision:
- 0:099f76422485
- Child:
- 7:8159a2d12e4e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ParsedValue.cpp Thu Jul 03 20:38:04 2014 +0200 @@ -0,0 +1,160 @@ +/* + * ParsedValue.cpp + * + * Created on: Nov 1, 2013 + * * Authors: Vincent Wochnik <v.wochnik@gmail.com> + * + * Copyright (c) 2013 Cumulocity GmbH + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "ParsedValue.h" +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> +#include <math.h> +#include "NullValue.h" +#include "IntegerValue.h" +#include "FloatValue.h" +#include "CharValue.h" + +ParsedValue::ParsedValue(const char *str, bool copy) : _value(str, copy), _float(0.0), _digits(0), _zflag(false), _integer(0l) +{ + if (_value.valueType() != VALUE_NULL) { + _type = VALUE_CHARACTER; + extractValue(); + } else { + _type = VALUE_NULL; + } +} + +uint8_t ParsedValue::valueType() const +{ + return _type; +} + +long ParsedValue::integerValue() const +{ + return _integer; +} + +double ParsedValue::floatValue() const +{ + return _float; +} + +const char * ParsedValue::characterValue() const +{ + if (_type != VALUE_CHARACTER) + return NULL; + return _value.characterValue(); +} + +size_t ParsedValue::write(AbstractDataSink& sink) const +{ + return _value.write(sink); +} + +size_t ParsedValue::length() const +{ + return _value.length(); +} + +Value* ParsedValue::copy() const +{ + if (_type == VALUE_NULL) + return new NullValue(); + if (_type == VALUE_INTEGER) + return new IntegerValue(_integer); + if (_type == VALUE_FLOAT) + return new FloatValue(_float, _digits, _zflag); + return new CharValue(_value.characterValue(), true); +} + +void ParsedValue::extractValue() +{ + const char *str; char *ptr, c; + bool floating = false, zflag = false, negative = false; + uint8_t digits = 0; + + str = _value.characterValue(); + + if (isspace(*str)) + return; + + // easy check for nan + if (strcmp(str, "nan") == 0) { + _float = NAN; + _type = VALUE_FLOAT; + return; + } + + if (*str == '-') { + negative = true; + str++; + } + + if (strcmp(str, "inf") == 0) { + _float = (negative) ? -INFINITY : INFINITY; + _type = VALUE_FLOAT; + return; + } + + for (ptr = (char*)str; (c = *ptr) != 0; ptr++) { + if (floating) { + if (!isdigit(c)) + return; + digits++; + } else { + if (c == '.') { + if (*(ptr+1) == '\0') + return; + floating = true; + } else if (isdigit(c)) { + _zflag = true; + } else { + return; + } + } + } + + if (floating) { + errno = 0; + if ((((_float = strtod(str, &ptr)) != 0.0) || (errno == 0)) && + (*ptr == '\0')) { + if (negative) + _float = -_float; + _zflag = zflag; + _digits = digits; + _type = VALUE_FLOAT; + } + } else { + errno = 0; + if ((((_integer = strtol(str, &ptr, 10)) != 0) || (errno == 0)) && + (*ptr == '\0')) { + if (negative) + _integer = -_integer; + _type = VALUE_INTEGER; + return; + } + } +}