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 
00029 #include "ParsedRecord.h"
00030 #include "ComposedRecord.h"
00031 #include "ParsedValue.h"
00032 #include <stdlib.h>
00033 #include <string.h>
00034 
00035 
00036 /*-------------------------------------------------------------------------*/
00037 ParsedRecord::ParsedRecord(bool copy) :
00038     _copy(copy)
00039 {
00040     _count = 0;
00041 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00042     _values = NULL;
00043 #endif
00044     _buffer = NULL;
00045 }
00046 /*-------------------------------------------------------------------------*/
00047 ParsedRecord::~ParsedRecord()
00048 {
00049     clear();
00050 
00051 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00052     if (_values != NULL)
00053         free(_values);
00054 #endif
00055 }
00056 /*-------------------------------------------------------------------------*/
00057 size_t ParsedRecord::values() const
00058 {
00059     return _count;
00060 }
00061 /*-------------------------------------------------------------------------*/
00062 const Value& ParsedRecord::value(size_t index) const
00063 {
00064     return *_values[index];
00065 }
00066 /*-------------------------------------------------------------------------*/
00067 ParsedRecord* ParsedRecord::copy() const
00068 {
00069     ParsedRecord *copy = new ParsedRecord(true);
00070     copy->set(_buffer, _count);
00071     return copy;
00072 }
00073 /*-------------------------------------------------------------------------*/
00074 const char * ParsedRecord::rawValue(size_t index) const
00075 {
00076     if (index >= _count)
00077         return NULL;
00078 
00079     const char *ptr = _buffer;
00080     for (size_t n = 0; n < index; n++)
00081     {
00082         ptr += strlen(ptr) + 1;
00083     }
00084 
00085     return ptr;
00086 }
00087 /*-------------------------------------------------------------------------*/
00088 bool ParsedRecord::set(const char *buffer, size_t count)
00089 {
00090     clear();
00091 
00092 #ifdef SMARTREST_PARSED_DYNAMIC_ALLOC
00093     const Value **values = (const Value**)realloc(_values, count*sizeof(Value*));
00094     if (values == NULL)
00095         return false;
00096     _values = values;
00097 #else
00098     if (count > SMARTREST_PARSED_FIXED_SIZE)
00099         count = SMARTREST_PARSED_FIXED_SIZE;
00100 #endif
00101 
00102     if (_copy)
00103     {
00104         const char *ptr = buffer;
00105         for (size_t n = 0; n < count; n++)
00106             ptr += strlen(ptr) + 1;
00107         _buffer = (const char*)malloc(ptr-buffer);
00108         if (_buffer == NULL)
00109             return false;
00110         memcpy((char*)_buffer, buffer, ptr-buffer);
00111     }
00112     else
00113     {
00114         _buffer = buffer;
00115     }
00116     _count = count;
00117 
00118     const char *ptr = _buffer;
00119     for (size_t n = 0; n < count; n++)
00120     {
00121         _values[n] = new ParsedValue(ptr, false);
00122         ptr += strlen(ptr) + 1;
00123     }
00124 
00125     return true;
00126 }
00127 /*-------------------------------------------------------------------------*/
00128 void ParsedRecord::clear()
00129 {
00130     for (size_t n = 0; n < _count; n++)
00131         delete _values[n];
00132     if ((_copy) && (_buffer != NULL))
00133         free((char*)_buffer);
00134     _buffer = NULL;
00135     _count = 0;
00136 }
00137 /*-------------------------------------------------------------------------*/