ParsedRecord.cpp

00001 /*
00002  * ParsedRecord.cpp
00003  *
00004  * Created on: Nov 1, 2013
00005  * * Authors: Vincent Wochnik <v.wochnik@gmail.com>
00006  *
00007  * Copyright (c) 2013 Cumulocity GmbH
00008  *
00009  * Permission is hereby granted, free of charge, to any person obtaining
00010  * a copy of this software and associated documentation files (the
00011  * "Software"), to deal in the Software without restriction, including
00012  * without limitation the rights to use, copy, modify, merge, publish,
00013  * distribute, sublicense, and/or sell copies of the Software, and to
00014  * permit persons to whom the Software is furnished to do so, subject to
00015  * the following conditions:
00016  *
00017  * The above copyright notice and this permission notice shall be
00018  * included in all copies or substantial portions of the Software.
00019  *
00020  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00021  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00022  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00023  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00024  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00025  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00026  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00027  */
00028 #include <stdlib.h>
00029 #include <string.h>
00030 #include <stdio.h>
00031 
00032 #include "ParsedRecord.h"
00033 #include "ComposedRecord.h"
00034 #include "ParsedValue.h"
00035 
00036 
00037 /*-------------------------------------------------------------------------*/
00038 ParsedRecord::ParsedRecord(bool copy) :
00039     _copy(copy)
00040 {
00041     _count = 0;
00042 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00043     _values = NULL;
00044 #endif
00045     _buffer = NULL;
00046 }
00047 /*-------------------------------------------------------------------------*/
00048 ParsedRecord::~ParsedRecord()
00049 {
00050     clear();
00051 
00052 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00053     if (_values)
00054         free(_values);
00055 #endif
00056 }
00057 /*-------------------------------------------------------------------------*/
00058 size_t ParsedRecord::values() const
00059 {
00060     return _count;
00061 }
00062 /*-------------------------------------------------------------------------*/
00063 const Value& ParsedRecord::value(size_t index) const
00064 {
00065     return *_values[index];
00066 }
00067 /*-------------------------------------------------------------------------*/
00068 ParsedRecord* ParsedRecord::copy() const
00069 {
00070     ParsedRecord *copy = new ParsedRecord(true);
00071     copy->set(_buffer, _count);
00072     return copy;
00073 }
00074 /*-------------------------------------------------------------------------*/
00075 const char * ParsedRecord::rawValue(size_t index) const
00076 {
00077     if (index >= _count)
00078         return NULL;
00079 
00080     const char *ptr = _buffer;
00081     for (size_t n = 0; n < index; n++) {
00082         ptr += strlen(ptr) + 1;
00083     }
00084     return ptr;
00085 }
00086 /*-------------------------------------------------------------------------*/
00087 bool ParsedRecord::set(const char *buffer, size_t count)
00088 {
00089     clear();
00090 
00091 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00092     const Value **values = (const Value**)realloc(_values, count*sizeof(Value*));
00093     if (values == NULL)
00094         return false;
00095     _values = values;
00096 #else
00097     if (count > SMARTREST_PARSED_FIXED_SIZE)
00098         count = SMARTREST_PARSED_FIXED_SIZE;
00099 #endif
00100 
00101     if (_copy) {
00102         const char *ptr = buffer;
00103         for (size_t n = 0; n < count; n++)
00104             ptr += strlen(ptr) + 1;
00105         _buffer = (const char*)malloc(ptr-buffer);
00106         if (_buffer == NULL)
00107             return false;
00108         memcpy((char*)_buffer, buffer, ptr-buffer);
00109     } else {
00110         _buffer = buffer;
00111     }
00112     _count = count;
00113 
00114     const char *ptr = _buffer;
00115     for (size_t n = 0; n < count; n++) {
00116         _values[n] = new ParsedValue(ptr, false);
00117         ptr += strlen(ptr) + 1;
00118     }
00119     return true;
00120 }
00121 /*-------------------------------------------------------------------------*/
00122 void ParsedRecord::clear()
00123 {
00124     for (size_t n = 0; n < _count; n++)
00125         delete _values[n];
00126     if ((_copy) && (_buffer != NULL))
00127         free((char*)_buffer);
00128     _buffer = NULL;
00129     _count = 0;
00130 }
00131 /*-------------------------------------------------------------------------*/