Own fork of MbedSmartRest
Dependents: MbedSmartRestMain MbedSmartRestMain
Fork of MbedSmartRest by
Diff: CharValue.cpp
- Revision:
- 0:099f76422485
- Child:
- 7:8159a2d12e4e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/CharValue.cpp Thu Jul 03 20:38:04 2014 +0200 @@ -0,0 +1,137 @@ +/* + * CharValue.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 "CharValue.h" +#include "NullValue.h" +#include <stdlib.h> +#include <string.h> + +inline int8_t __charvalue_need_escape(const char *str); + +CharValue::CharValue(const char *str, bool copy) +{ + if ((str == NULL) || (*str == '\0')) { + _alloc = false; + _str = NULL; + } else { + _alloc = copy; + if (copy) { + _str = (const char*)malloc(strlen(str)*sizeof(char)); + strcpy((char*)_str, str); + } else { + _str = str; + } + } +} + +CharValue::~CharValue() +{ + if (_alloc) + free((void*)_str); +} + +uint8_t CharValue::valueType() const +{ + if (_str == NULL) + return VALUE_NULL; + return VALUE_CHARACTER; +} + +long CharValue::integerValue() const +{ + return 0; +} + +double CharValue::floatValue() const +{ + return 0.0; +} + +const char * CharValue::characterValue() const +{ + return _str; +} + +size_t CharValue::write(AbstractDataSink& sink) const +{ + if (_str == NULL) + return 0; + size_t n = 0; + int8_t esc = __charvalue_need_escape(_str) ? 1 : 0; + if (esc) n += sink.write('"'); + for (char *q = (char*)_str, c; (c = *q) != 0; q++) { + if ((esc) && (c == '"')) + n += sink.write('"'); + n += sink.write(c); + } + if (esc) n += sink.write('"'); + return n; +} + +size_t CharValue::length() const +{ + if (_str == NULL) + return 0; + size_t n = 0; + int8_t esc = __charvalue_need_escape(_str) ? 1 : 0; + if (esc) + n += 2; + for (char *q = (char*)_str, c; (c = *q) != 0; q++) { + if ((esc) && (c == '"')) + n++; + n++; + } + return n; +} + +int8_t __charvalue_need_escape(const char *str) +{ + int8_t w = 0; + for (char c; (c = *str) != 0; str++) { + if ((c == ' ') || (c == '\t')) { + if (w == 0) + return 1; + w = 2; + } else { + w = 1; + if ((c == '"') || (c == ',') || (c == '\r') || (c == '\n')) + return 1; + } + } + if (w == 2) + return 1; + return 0; +} + +Value* CharValue::copy() const +{ + if (_str == NULL) + return new NullValue(); + return new CharValue(_str, true); +} +