Xinlei Cao / MbedSmartRest

Own fork of MbedSmartRest

Dependents:   MbedSmartRestMain MbedSmartRestMain

Fork of MbedSmartRest by Cumulocity Official

CharValue.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 * CharValue.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 "CharValue.h"
Cumulocity 0:099f76422485 30 #include "NullValue.h"
Cumulocity 0:099f76422485 31 #include <stdlib.h>
Cumulocity 0:099f76422485 32 #include <string.h>
Cumulocity 0:099f76422485 33
Cumulocity 0:099f76422485 34 inline int8_t __charvalue_need_escape(const char *str);
Cumulocity 0:099f76422485 35
Cumulocity 0:099f76422485 36 CharValue::CharValue(const char *str, bool copy)
Cumulocity 0:099f76422485 37 {
Cumulocity 0:099f76422485 38 if ((str == NULL) || (*str == '\0')) {
Cumulocity 0:099f76422485 39 _alloc = false;
Cumulocity 0:099f76422485 40 _str = NULL;
Cumulocity 0:099f76422485 41 } else {
Cumulocity 0:099f76422485 42 _alloc = copy;
Cumulocity 0:099f76422485 43 if (copy) {
Cumulocity 0:099f76422485 44 _str = (const char*)malloc(strlen(str)*sizeof(char));
Cumulocity 0:099f76422485 45 strcpy((char*)_str, str);
Cumulocity 0:099f76422485 46 } else {
Cumulocity 0:099f76422485 47 _str = str;
Cumulocity 0:099f76422485 48 }
Cumulocity 0:099f76422485 49 }
Cumulocity 0:099f76422485 50 }
Cumulocity 0:099f76422485 51
Cumulocity 0:099f76422485 52 CharValue::~CharValue()
Cumulocity 0:099f76422485 53 {
Cumulocity 0:099f76422485 54 if (_alloc)
Cumulocity 0:099f76422485 55 free((void*)_str);
Cumulocity 0:099f76422485 56 }
Cumulocity 0:099f76422485 57
Cumulocity 0:099f76422485 58 uint8_t CharValue::valueType() const
Cumulocity 0:099f76422485 59 {
Cumulocity 0:099f76422485 60 if (_str == NULL)
Cumulocity 0:099f76422485 61 return VALUE_NULL;
Cumulocity 0:099f76422485 62 return VALUE_CHARACTER;
Cumulocity 0:099f76422485 63 }
Cumulocity 0:099f76422485 64
Cumulocity 0:099f76422485 65 long CharValue::integerValue() const
Cumulocity 0:099f76422485 66 {
Cumulocity 0:099f76422485 67 return 0;
Cumulocity 0:099f76422485 68 }
Cumulocity 0:099f76422485 69
Cumulocity 0:099f76422485 70 double CharValue::floatValue() const
Cumulocity 0:099f76422485 71 {
Cumulocity 0:099f76422485 72 return 0.0;
Cumulocity 0:099f76422485 73 }
Cumulocity 0:099f76422485 74
Cumulocity 0:099f76422485 75 const char * CharValue::characterValue() const
Cumulocity 0:099f76422485 76 {
Cumulocity 0:099f76422485 77 return _str;
Cumulocity 0:099f76422485 78 }
Cumulocity 0:099f76422485 79
Cumulocity 0:099f76422485 80 size_t CharValue::write(AbstractDataSink& sink) const
Cumulocity 0:099f76422485 81 {
Cumulocity 0:099f76422485 82 if (_str == NULL)
Cumulocity 0:099f76422485 83 return 0;
Cumulocity 0:099f76422485 84 size_t n = 0;
Cumulocity 0:099f76422485 85 int8_t esc = __charvalue_need_escape(_str) ? 1 : 0;
Cumulocity 0:099f76422485 86 if (esc) n += sink.write('"');
Cumulocity 0:099f76422485 87 for (char *q = (char*)_str, c; (c = *q) != 0; q++) {
Cumulocity 0:099f76422485 88 if ((esc) && (c == '"'))
Cumulocity 0:099f76422485 89 n += sink.write('"');
Cumulocity 0:099f76422485 90 n += sink.write(c);
Cumulocity 0:099f76422485 91 }
Cumulocity 0:099f76422485 92 if (esc) n += sink.write('"');
Cumulocity 0:099f76422485 93 return n;
Cumulocity 0:099f76422485 94 }
Cumulocity 0:099f76422485 95
Cumulocity 0:099f76422485 96 size_t CharValue::length() const
Cumulocity 0:099f76422485 97 {
Cumulocity 0:099f76422485 98 if (_str == NULL)
Cumulocity 0:099f76422485 99 return 0;
Cumulocity 0:099f76422485 100 size_t n = 0;
Cumulocity 0:099f76422485 101 int8_t esc = __charvalue_need_escape(_str) ? 1 : 0;
Cumulocity 0:099f76422485 102 if (esc)
Cumulocity 0:099f76422485 103 n += 2;
Cumulocity 0:099f76422485 104 for (char *q = (char*)_str, c; (c = *q) != 0; q++) {
Cumulocity 0:099f76422485 105 if ((esc) && (c == '"'))
Cumulocity 0:099f76422485 106 n++;
Cumulocity 0:099f76422485 107 n++;
Cumulocity 0:099f76422485 108 }
Cumulocity 0:099f76422485 109 return n;
Cumulocity 0:099f76422485 110 }
Cumulocity 0:099f76422485 111
Cumulocity 0:099f76422485 112 int8_t __charvalue_need_escape(const char *str)
Cumulocity 0:099f76422485 113 {
Cumulocity 0:099f76422485 114 int8_t w = 0;
Cumulocity 0:099f76422485 115 for (char c; (c = *str) != 0; str++) {
Cumulocity 0:099f76422485 116 if ((c == ' ') || (c == '\t')) {
Cumulocity 0:099f76422485 117 if (w == 0)
Cumulocity 0:099f76422485 118 return 1;
Cumulocity 0:099f76422485 119 w = 2;
Cumulocity 0:099f76422485 120 } else {
Cumulocity 0:099f76422485 121 w = 1;
Cumulocity 0:099f76422485 122 if ((c == '"') || (c == ',') || (c == '\r') || (c == '\n'))
Cumulocity 0:099f76422485 123 return 1;
Cumulocity 0:099f76422485 124 }
Cumulocity 0:099f76422485 125 }
Cumulocity 0:099f76422485 126 if (w == 2)
Cumulocity 0:099f76422485 127 return 1;
Cumulocity 0:099f76422485 128 return 0;
Cumulocity 0:099f76422485 129 }
Cumulocity 0:099f76422485 130
Cumulocity 0:099f76422485 131 Value* CharValue::copy() const
Cumulocity 0:099f76422485 132 {
Cumulocity 0:099f76422485 133 if (_str == NULL)
Cumulocity 0:099f76422485 134 return new NullValue();
Cumulocity 0:099f76422485 135 return new CharValue(_str, true);
Cumulocity 0:099f76422485 136 }
Cumulocity 0:099f76422485 137