src/adaptation/config.cpp - platform/external/libnfc-nci - Git at Google

 /******************************************************************************
  *
  *  Copyright (C) 2011-2012 Broadcom Corporation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
  *  You may obtain a copy of the License at:
  *
  *  http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  *
  ******************************************************************************/
 #include "OverrideLog.h"
 #include "config.h"
 #include <stdio.h>
 #include <string>
 #include <vector>
 #include <list>

 #define LOG_TAG "NfcAdaptation"

 #if GENERIC_TARGET
 const char alternative_config_path[] = "/data/nfc/";
 #else
 const char alternative_config_path[] = "";
 #endif

 const char transport_config_path[] = "/etc/";

 #define config_name             "libnfc-brcm.conf"
 #define extra_config_base       "libnfc-brcm-"
 #define extra_config_ext        ".conf"
 #define     IsStringValue       0x80000000

 using namespace::std;

 class CNfcParam : public string
 {
 public:
     CNfcParam();
     CNfcParam(const char* name, const string& value);
     CNfcParam(const char* name, unsigned long value);
     virtual ~CNfcParam();
     unsigned long numValue() const {return m_numValue;}
     const char*   str_value() const {return m_str_value.c_str();}
     size_t        str_len() const   {return m_str_value.length();}
 private:
     string          m_str_value;
     unsigned long   m_numValue;
 };

 class CNfcConfig : public vector<const CNfcParam*>
 {
 public:
     virtual ~CNfcConfig();
     static CNfcConfig& GetInstance();
     friend void readOptionalConfig(const char* optional);

     bool    getValue(const char* name, char* pValue, size_t len) const;
     bool    getValue(const char* name, unsigned long& rValue) const;
     bool    getValue(const char* name, unsigned short & rValue) const;
     const CNfcParam*    find(const char* p_name) const;
     void    clean();
 private:
     CNfcConfig();
     bool    readConfig(const char* name, bool bResetContent);
     void    moveFromList();
     void    moveToList();
     void    add(const CNfcParam* pParam);
     list<const CNfcParam*> m_list;
     bool    mValidFile;

     unsigned long   state;

     inline bool Is(unsigned long f) {return (state & f) == f;}
     inline void Set(unsigned long f) {state |= f;}
     inline void Reset(unsigned long f) {state &= ~f;}
 };

 /*******************************************************************************
 **
 ** Function:    isPrintable()
 **
 ** Description: detremine if a char is printable
 **
 ** Returns:     none
 **
 *******************************************************************************/
 inline bool isPrintable(char c)
 {
     return  (c >= 'A' && c <= 'Z') ||
             (c >= 'a' && c <= 'z') ||
             (c >= '0' && c <= '9') ||
             c == '/' || c == '_' || c == '-' || c == '.';
 }

 /*******************************************************************************
 **
 ** Function:    isDigit()
 **
 ** Description: detremine if a char is numeral digit
 **
 ** Returns:     none
 **
 *******************************************************************************/
 inline bool isDigit(char c, int base)
 {
     if ('0' <= c && c <= '9')
         return true;
     if (base == 16)
     {
         if (('A' <= c && c <= 'F') ||
             ('a' <= c && c <= 'f') )
             return true;
     }
     return false;
 }

 /*******************************************************************************
 **
 ** Function:    getDigitValue()
 **
 ** Description: return numercal value of a char
 **
 ** Returns:     none
 **
 *******************************************************************************/
 inline int getDigitValue(char c, int base)
 {
     if ('0' <= c && c <= '9')
         return c - '0';
     if (base == 16)
     {
         if ('A' <= c && c <= 'F')
             return c - 'A' + 10;
         else if ('a' <= c && c <= 'f')
             return c - 'a' + 10;
     }
     return 0;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::readConfig()
 **
 ** Description: read Config settings and parse them into a linked list
 **              move the element from linked list to a array at the end
 **
 ** Returns:     none
 **
 *******************************************************************************/
 bool CNfcConfig::readConfig(const char* name, bool bResetContent)
 {
     enum {
         BEGIN_LINE = 1,
         TOKEN,
         STR_VALUE,
         NUM_VALUE,
         BEGIN_HEX,
         BEGIN_QUOTE,
         END_LINE
     };

     FILE*   fd;
     string  token;
     string  strValue;
     unsigned long    numValue = 0;
     CNfcParam* pParam = NULL;
     int     i;
     int     base;
     char    c;

     state = BEGIN_LINE;
     /* open config file, read it into a buffer */
     if ((fd = fopen(name, "rb")) == NULL)
     {
         ALOGD("%s Cannot open config file %s\n", __func__, name);
         if (bResetContent)
         {
             ALOGD("%s Using default value for all settings\n", __func__);
         mValidFile = false;
         }
         return false;
     }
     ALOGD("%s Opened %s config %s\n", __func__, (bResetContent ? "base" : "optional"), name);

     mValidFile = true;
     if (size() > 0)
     {
         if (bResetContent)
         clean();
         else
             moveToList();
     }

     while (!feof(fd) && fread(&c, 1, 1, fd) == 1)
     {
         switch (state & 0xff)
         {
         case BEGIN_LINE:
             if (c == '#')
                 state = END_LINE;
             else if (isPrintable(c))
             {
                 i = 0;
                 token.erase();
                 strValue.erase();
                 state = TOKEN;
                 token.push_back(c);
             }
             break;
         case TOKEN:
             if (c == '=')
             {
                 token.push_back('\0');
                 state = BEGIN_QUOTE;
             }
             else if (isPrintable(c))
                 token.push_back(c);
             else
                 state = END_LINE;
             break;
         case BEGIN_QUOTE:
             if (c == '"')
             {
                 state = STR_VALUE;
                 base = 0;
             }
             else if (c == '0')
                 state = BEGIN_HEX;
             else if (isDigit(c, 10))
             {
                 state = NUM_VALUE;
                 base = 10;
                 numValue = getDigitValue(c, base);
                 i = 0;
             }
             else if (c == '{')
             {
                 state = NUM_VALUE;
                 base = 16;
                 i = 0;
                 Set(IsStringValue);
             }
             else
                 state = END_LINE;
             break;
         case BEGIN_HEX:
             if (c == 'x' || c == 'X')
             {
                 state = NUM_VALUE;
                 base = 16;
                 numValue = 0;
                 i = 0;
                 break;
             }
             else if (isDigit(c, 10))
             {
                 state = NUM_VALUE;
                 base = 10;
                 numValue = getDigitValue(c, base);
                 break;
             }
             else if (c != '\n' && c != '\r')
             {
                 state = END_LINE;
                 break;
             }
             // fal through to numValue to handle numValue

         case NUM_VALUE:
             if (isDigit(c, base))
             {
                 numValue *= base;
                 numValue += getDigitValue(c, base);
                 ++i;
             }
             else if (base == 16 && (c == ':' || c == '-' || c == ' ' || c == '}'))
             {
                 if (i > 0)
                 {
                     int n = (i+1) / 2;
                     while (n-- > 0)
                     {
                         unsigned char c = (numValue >> (n * 8))  & 0xFF;
                         strValue.push_back(c);
                     }
                 }
                 Set(IsStringValue);
                 numValue = 0;
                 i = 0;
             }
             else
             {
                 if (c == '\n' || c == '\r')
                     state = BEGIN_LINE;
                 else
                     state = END_LINE;
                 if (Is(IsStringValue) && base == 16 && i > 0)
                 {
                     int n = (i+1) / 2;
                     while (n-- > 0)
                         strValue.push_back(((numValue >> (n * 8))  & 0xFF));
                 }
                 if (strValue.length() > 0)
                     pParam = new CNfcParam(token.c_str(), strValue);
                 else
                     pParam = new CNfcParam(token.c_str(), numValue);
                 add(pParam);
                 strValue.erase();
                 numValue = 0;
             }
             break;
         case STR_VALUE:
             if (c == '"')
             {
                 strValue.push_back('\0');
                 state = END_LINE;
                 pParam = new CNfcParam(token.c_str(), strValue);
                 add(pParam);
             }
             else if (isPrintable(c))
                 strValue.push_back(c);
             break;
         case END_LINE:
             if (c == '\n' || c == '\r')
                 state = BEGIN_LINE;
             break;
         default:
             break;
         }
     }

     fclose(fd);

     moveFromList();
     return size() > 0;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::CNfcConfig()
 **
 ** Description: class constructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcConfig::CNfcConfig() :
     mValidFile(true)
 {
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::~CNfcConfig()
 **
 ** Description: class destructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcConfig::~CNfcConfig()
 {
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::GetInstance()
 **
 ** Description: get class singleton object
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcConfig& CNfcConfig::GetInstance()
 {
     static CNfcConfig theInstance;

     if (theInstance.size() == 0 && theInstance.mValidFile)
     {
         string strPath;
         if (alternative_config_path[0] != '\0')
         {
             strPath.assign(alternative_config_path);
             strPath += config_name;
             theInstance.readConfig(strPath.c_str(), true);
             if (!theInstance.empty())
             {
                 return theInstance;
         }
         }
         strPath.assign(transport_config_path);
         strPath += config_name;
         theInstance.readConfig(strPath.c_str(), true);
     }

     return theInstance;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::getValue()
 **
 ** Description: get a string value of a setting
 **
 ** Returns:     true if setting exists
 **              false if setting does not exist
 **
 *******************************************************************************/
 bool CNfcConfig::getValue(const char* name, char* pValue, size_t len) const
 {
     const CNfcParam* pParam = find(name);
     if (pParam == NULL)
         return false;

     if (pParam->str_len() > 0)
     {
         memset(pValue, 0, len);
         memcpy(pValue, pParam->str_value(), pParam->str_len());
         return true;
     }
     return false;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::getValue()
 **
 ** Description: get a long numerical value of a setting
 **
 ** Returns:     true if setting exists
 **              false if setting does not exist
 **
 *******************************************************************************/
 bool CNfcConfig::getValue(const char* name, unsigned long& rValue) const
 {
     const CNfcParam* pParam = find(name);
     if (pParam == NULL)
         return false;

     if (pParam->str_len() == 0)
     {
         rValue = static_cast<unsigned long>(pParam->numValue());
         return true;
     }
     return false;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::getValue()
 **
 ** Description: get a short numerical value of a setting
 **
 ** Returns:     true if setting exists
 **              false if setting does not exist
 **
 *******************************************************************************/
 bool CNfcConfig::getValue(const char* name, unsigned short& rValue) const
 {
     const CNfcParam* pParam = find(name);
     if (pParam == NULL)
         return false;

     if (pParam->str_len() == 0)
     {
         rValue = static_cast<unsigned short>(pParam->numValue());
         return true;
     }
     return false;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::find()
 **
 ** Description: search if a setting exist in the setting array
 **
 ** Returns:     pointer to the setting object
 **
 *******************************************************************************/
 const CNfcParam* CNfcConfig::find(const char* p_name) const
 {
     if (size() == 0)
         return NULL;

     for (const_iterator it = begin(), itEnd = end(); it != itEnd; ++it)
     {
         if (**it < p_name)
             continue;
         else if (**it == p_name)
         {
             if((*it)->str_len() > 0)
                 ALOGD("%s found %s=%s\n", __func__, p_name, (*it)->str_value());
             else
                 ALOGD("%s found %s=(0x%X)\n", __func__, p_name, (*it)->numValue());
             return *it;
         }
         else
             break;
     }
     return NULL;
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::clean()
 **
 ** Description: reset the setting array
 **
 ** Returns:     none
 **
 *******************************************************************************/
 void CNfcConfig::clean()
 {
     if (size() == 0)
         return;

     for (iterator it = begin(), itEnd = end(); it != itEnd; ++it)
         delete *it;
     clear();
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::Add()
 **
 ** Description: add a setting object to the list
 **
 ** Returns:     none
 **
 *******************************************************************************/
 void CNfcConfig::add(const CNfcParam* pParam)
 {
     if (m_list.size() == 0)
     {
         m_list.push_back(pParam);
         return;
     }
     for (list<const CNfcParam*>::iterator it = m_list.begin(), itEnd = m_list.end(); it != itEnd; ++it)
     {
         if (**it < pParam->c_str())
             continue;
         m_list.insert(it, pParam);
         return;
     }
     m_list.push_back(pParam);
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::moveFromList()
 **
 ** Description: move the setting object from list to array
 **
 ** Returns:     none
 **
 *******************************************************************************/
 void CNfcConfig::moveFromList()
 {
     if (m_list.size() == 0)
         return;

     for (list<const CNfcParam*>::iterator it = m_list.begin(), itEnd = m_list.end(); it != itEnd; ++it)
         push_back(*it);
     m_list.clear();
 }

 /*******************************************************************************
 **
 ** Function:    CNfcConfig::moveToList()
 **
 ** Description: move the setting object from array to list
 **
 ** Returns:     none
 **
 *******************************************************************************/
 void CNfcConfig::moveToList()
 {
     if (m_list.size() != 0)
         m_list.clear();

     for (iterator it = begin(), itEnd = end(); it != itEnd; ++it)
         m_list.push_back(*it);
     clear();
 }

 /*******************************************************************************
 **
 ** Function:    CNfcParam::CNfcParam()
 **
 ** Description: class constructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcParam::CNfcParam() :
     m_numValue(0)
 {
 }

 /*******************************************************************************
 **
 ** Function:    CNfcParam::~CNfcParam()
 **
 ** Description: class destructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcParam::~CNfcParam()
 {
 }

 /*******************************************************************************
 **
 ** Function:    CNfcParam::CNfcParam()
 **
 ** Description: class copy constructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcParam::CNfcParam(const char* name,  const string& value) :
     string(name),
     m_str_value(value),
     m_numValue(0)
 {
 }

 /*******************************************************************************
 **
 ** Function:    CNfcParam::CNfcParam()
 **
 ** Description: class copy constructor
 **
 ** Returns:     none
 **
 *******************************************************************************/
 CNfcParam::CNfcParam(const char* name,  unsigned long value) :
     string(name),
     m_numValue(value)
 {
 }

 /*******************************************************************************
 **
 ** Function:    GetStrValue
 **
 ** Description: API function for getting a string value of a setting
 **
 ** Returns:     none
 **
 *******************************************************************************/
 extern "C" int GetStrValue(const char* name, char* pValue, unsigned long len)
 {
     CNfcConfig& rConfig = CNfcConfig::GetInstance();

     return rConfig.getValue(name, pValue, len);
 }

 /*******************************************************************************
 **
 ** Function:    GetNumValue
 **
 ** Description: API function for getting a numerical value of a setting
 **
 ** Returns:     none
 **
 *******************************************************************************/
 extern "C" int GetNumValue(const char* name, void* pValue, unsigned long len)
 {
     if (!pValue)
         return false;

     CNfcConfig& rConfig = CNfcConfig::GetInstance();
     const CNfcParam* pParam = rConfig.find(name);

     if (pParam == NULL)
         return false;
     unsigned long v = pParam->numValue();
     if (v == 0 && pParam->str_len() > 0 && pParam->str_len() < 4)
     {
         const unsigned char* p = (const unsigned char*)pParam->str_value();
         for (int i = 0 ; i < pParam->str_len(); ++i)
         {
             v *= 256;
             v += *p++;
         }
     }
     switch (len)
     {
     case sizeof(unsigned long):
         *(static_cast<unsigned long*>(pValue)) = (unsigned long)v;
         break;
     case sizeof(unsigned short):
         *(static_cast<unsigned short*>(pValue)) = (unsigned short)v;
         break;
     case sizeof(unsigned char):
         *(static_cast<unsigned char*> (pValue)) = (unsigned char)v;
         break;
     default:
         return false;
     }
     return true;
 }

 /*******************************************************************************
 **
 ** Function:    resetConfig
 **
 ** Description: reset settings array
 **
 ** Returns:     none
 **
 *******************************************************************************/
 extern void resetConfig()
 {
     CNfcConfig& rConfig = CNfcConfig::GetInstance();

     rConfig.clean();
 }

 /*******************************************************************************
 **
 ** Function:    readOptionalConfig()
 **
 ** Description: read Config settings from an optional conf file
 **
 ** Returns:     none
 **
 *******************************************************************************/
 void readOptionalConfig(const char* extra)
 {
     string strPath;
     strPath.assign(transport_config_path);
     if (alternative_config_path[0] != '\0')
         strPath.assign(alternative_config_path);

     strPath += extra_config_base;
     strPath += extra;
     strPath += extra_config_ext;
     CNfcConfig::GetInstance().readConfig(strPath.c_str(), false);
 }
	/******************************************************************************
	*
	* Copyright (C) 2011-2012 Broadcom Corporation
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at:
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*
	******************************************************************************/
	#include "OverrideLog.h"
	#include "config.h"
	#include <stdio.h>
	#include <string>
	#include <vector>
	#include <list>

	#define LOG_TAG "NfcAdaptation"

	#if GENERIC_TARGET
	const char alternative_config_path[] = "/data/nfc/";
	#else
	const char alternative_config_path[] = "";
	#endif

	const char transport_config_path[] = "/etc/";

	#define config_name "libnfc-brcm.conf"
	#define extra_config_base "libnfc-brcm-"
	#define extra_config_ext ".conf"
	#define IsStringValue 0x80000000

	using namespace::std;

	class CNfcParam : public string
	{
	public:
	CNfcParam();
	CNfcParam(const char* name, const string& value);
	CNfcParam(const char* name, unsigned long value);
	virtual ~CNfcParam();
	unsigned long numValue() const {return m_numValue;}
	const char* str_value() const {return m_str_value.c_str();}
	size_t str_len() const {return m_str_value.length();}
	private:
	string m_str_value;
	unsigned long m_numValue;
	};

	class CNfcConfig : public vector<const CNfcParam*>
	{
	public:
	virtual ~CNfcConfig();
	static CNfcConfig& GetInstance();
	friend void readOptionalConfig(const char* optional);

	bool getValue(const char* name, char* pValue, size_t len) const;
	bool getValue(const char* name, unsigned long& rValue) const;
	bool getValue(const char* name, unsigned short & rValue) const;
	const CNfcParam* find(const char* p_name) const;
	void clean();
	private:
	CNfcConfig();
	bool readConfig(const char* name, bool bResetContent);
	void moveFromList();
	void moveToList();
	void add(const CNfcParam* pParam);
	list<const CNfcParam*> m_list;
	bool mValidFile;

	unsigned long state;

	inline bool Is(unsigned long f) {return (state & f) == f;}
	inline void Set(unsigned long f) {state \|= f;}
	inline void Reset(unsigned long f) {state &= ~f;}
	};

	/*******************************************************************************
	**
	** Function: isPrintable()
	**
	** Description: detremine if a char is printable
	**
	** Returns: none
	**
	*******************************************************************************/
	inline bool isPrintable(char c)
	{
	return (c >= 'A' && c <= 'Z') \|\|
	(c >= 'a' && c <= 'z') \|\|
	(c >= '0' && c <= '9') \|\|
	c == '/' \|\| c == '_' \|\| c == '-' \|\| c == '.';
	}

	/*******************************************************************************
	**
	** Function: isDigit()
	**
	** Description: detremine if a char is numeral digit
	**
	** Returns: none
	**
	*******************************************************************************/
	inline bool isDigit(char c, int base)
	{
	if ('0' <= c && c <= '9')
	return true;
	if (base == 16)
	{
	if (('A' <= c && c <= 'F') \|\|
	('a' <= c && c <= 'f') )
	return true;
	}
	return false;
	}

	/*******************************************************************************
	**
	** Function: getDigitValue()
	**
	** Description: return numercal value of a char
	**
	** Returns: none
	**
	*******************************************************************************/
	inline int getDigitValue(char c, int base)
	{
	if ('0' <= c && c <= '9')
	return c - '0';
	if (base == 16)
	{
	if ('A' <= c && c <= 'F')
	return c - 'A' + 10;
	else if ('a' <= c && c <= 'f')
	return c - 'a' + 10;
	}
	return 0;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::readConfig()
	**
	** Description: read Config settings and parse them into a linked list
	** move the element from linked list to a array at the end
	**
	** Returns: none
	**
	*******************************************************************************/
	bool CNfcConfig::readConfig(const char* name, bool bResetContent)
	{
	enum {
	BEGIN_LINE = 1,
	TOKEN,
	STR_VALUE,
	NUM_VALUE,
	BEGIN_HEX,
	BEGIN_QUOTE,
	END_LINE
	};

	FILE* fd;
	string token;
	string strValue;
	unsigned long numValue = 0;
	CNfcParam* pParam = NULL;
	int i;
	int base;
	char c;

	state = BEGIN_LINE;
	/* open config file, read it into a buffer */
	if ((fd = fopen(name, "rb")) == NULL)
	{
	ALOGD("%s Cannot open config file %s\n", __func__, name);
	if (bResetContent)
	{
	ALOGD("%s Using default value for all settings\n", __func__);
	mValidFile = false;
	}
	return false;
	}
	ALOGD("%s Opened %s config %s\n", __func__, (bResetContent ? "base" : "optional"), name);

	mValidFile = true;
	if (size() > 0)
	{
	if (bResetContent)
	clean();
	else
	moveToList();
	}

	while (!feof(fd) && fread(&c, 1, 1, fd) == 1)
	{
	switch (state & 0xff)
	{
	case BEGIN_LINE:
	if (c == '#')
	state = END_LINE;
	else if (isPrintable(c))
	{
	i = 0;
	token.erase();
	strValue.erase();
	state = TOKEN;
	token.push_back(c);
	}
	break;
	case TOKEN:
	if (c == '=')
	{
	token.push_back('\0');
	state = BEGIN_QUOTE;
	}
	else if (isPrintable(c))
	token.push_back(c);
	else
	state = END_LINE;
	break;
	case BEGIN_QUOTE:
	if (c == '"')
	{
	state = STR_VALUE;
	base = 0;
	}
	else if (c == '0')
	state = BEGIN_HEX;
	else if (isDigit(c, 10))
	{
	state = NUM_VALUE;
	base = 10;
	numValue = getDigitValue(c, base);
	i = 0;
	}
	else if (c == '{')
	{
	state = NUM_VALUE;
	base = 16;
	i = 0;
	Set(IsStringValue);
	}
	else
	state = END_LINE;
	break;
	case BEGIN_HEX:
	if (c == 'x' \|\| c == 'X')
	{
	state = NUM_VALUE;
	base = 16;
	numValue = 0;
	i = 0;
	break;
	}
	else if (isDigit(c, 10))
	{
	state = NUM_VALUE;
	base = 10;
	numValue = getDigitValue(c, base);
	break;
	}
	else if (c != '\n' && c != '\r')
	{
	state = END_LINE;
	break;
	}
	// fal through to numValue to handle numValue

	case NUM_VALUE:
	if (isDigit(c, base))
	{
	numValue *= base;
	numValue += getDigitValue(c, base);
	++i;
	}
	else if (base == 16 && (c == ':' \|\| c == '-' \|\| c == ' ' \|\| c == '}'))
	{
	if (i > 0)
	{
	int n = (i+1) / 2;
	while (n-- > 0)
	{
	unsigned char c = (numValue >> (n * 8)) & 0xFF;
	strValue.push_back(c);
	}
	}
	Set(IsStringValue);
	numValue = 0;
	i = 0;
	}
	else
	{
	if (c == '\n' \|\| c == '\r')
	state = BEGIN_LINE;
	else
	state = END_LINE;
	if (Is(IsStringValue) && base == 16 && i > 0)
	{
	int n = (i+1) / 2;
	while (n-- > 0)
	strValue.push_back(((numValue >> (n * 8)) & 0xFF));
	}
	if (strValue.length() > 0)
	pParam = new CNfcParam(token.c_str(), strValue);
	else
	pParam = new CNfcParam(token.c_str(), numValue);
	add(pParam);
	strValue.erase();
	numValue = 0;
	}
	break;
	case STR_VALUE:
	if (c == '"')
	{
	strValue.push_back('\0');
	state = END_LINE;
	pParam = new CNfcParam(token.c_str(), strValue);
	add(pParam);
	}
	else if (isPrintable(c))
	strValue.push_back(c);
	break;
	case END_LINE:
	if (c == '\n' \|\| c == '\r')
	state = BEGIN_LINE;
	break;
	default:
	break;
	}
	}

	fclose(fd);

	moveFromList();
	return size() > 0;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::CNfcConfig()
	**
	** Description: class constructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcConfig::CNfcConfig() :
	mValidFile(true)
	{
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::~CNfcConfig()
	**
	** Description: class destructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcConfig::~CNfcConfig()
	{
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::GetInstance()
	**
	** Description: get class singleton object
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcConfig& CNfcConfig::GetInstance()
	{
	static CNfcConfig theInstance;

	if (theInstance.size() == 0 && theInstance.mValidFile)
	{
	string strPath;
	if (alternative_config_path[0] != '\0')
	{
	strPath.assign(alternative_config_path);
	strPath += config_name;
	theInstance.readConfig(strPath.c_str(), true);
	if (!theInstance.empty())
	{
	return theInstance;
	}
	}
	strPath.assign(transport_config_path);
	strPath += config_name;
	theInstance.readConfig(strPath.c_str(), true);
	}

	return theInstance;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::getValue()
	**
	** Description: get a string value of a setting
	**
	** Returns: true if setting exists
	** false if setting does not exist
	**
	*******************************************************************************/
	bool CNfcConfig::getValue(const char* name, char* pValue, size_t len) const
	{
	const CNfcParam* pParam = find(name);
	if (pParam == NULL)
	return false;

	if (pParam->str_len() > 0)
	{
	memset(pValue, 0, len);
	memcpy(pValue, pParam->str_value(), pParam->str_len());
	return true;
	}
	return false;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::getValue()
	**
	** Description: get a long numerical value of a setting
	**
	** Returns: true if setting exists
	** false if setting does not exist
	**
	*******************************************************************************/
	bool CNfcConfig::getValue(const char* name, unsigned long& rValue) const
	{
	const CNfcParam* pParam = find(name);
	if (pParam == NULL)
	return false;

	if (pParam->str_len() == 0)
	{
	rValue = static_cast<unsigned long>(pParam->numValue());
	return true;
	}
	return false;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::getValue()
	**
	** Description: get a short numerical value of a setting
	**
	** Returns: true if setting exists
	** false if setting does not exist
	**
	*******************************************************************************/
	bool CNfcConfig::getValue(const char* name, unsigned short& rValue) const
	{
	const CNfcParam* pParam = find(name);
	if (pParam == NULL)
	return false;

	if (pParam->str_len() == 0)
	{
	rValue = static_cast<unsigned short>(pParam->numValue());
	return true;
	}
	return false;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::find()
	**
	** Description: search if a setting exist in the setting array
	**
	** Returns: pointer to the setting object
	**
	*******************************************************************************/
	const CNfcParam* CNfcConfig::find(const char* p_name) const
	{
	if (size() == 0)
	return NULL;

	for (const_iterator it = begin(), itEnd = end(); it != itEnd; ++it)
	{
	if (**it < p_name)
	continue;
	else if (**it == p_name)
	{
	if((*it)->str_len() > 0)
	ALOGD("%s found %s=%s\n", __func__, p_name, (*it)->str_value());
	else
	ALOGD("%s found %s=(0x%X)\n", __func__, p_name, (*it)->numValue());
	return *it;
	}
	else
	break;
	}
	return NULL;
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::clean()
	**
	** Description: reset the setting array
	**
	** Returns: none
	**
	*******************************************************************************/
	void CNfcConfig::clean()
	{
	if (size() == 0)
	return;

	for (iterator it = begin(), itEnd = end(); it != itEnd; ++it)
	delete *it;
	clear();
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::Add()
	**
	** Description: add a setting object to the list
	**
	** Returns: none
	**
	*******************************************************************************/
	void CNfcConfig::add(const CNfcParam* pParam)
	{
	if (m_list.size() == 0)
	{
	m_list.push_back(pParam);
	return;
	}
	for (list<const CNfcParam*>::iterator it = m_list.begin(), itEnd = m_list.end(); it != itEnd; ++it)
	{
	if (**it < pParam->c_str())
	continue;
	m_list.insert(it, pParam);
	return;
	}
	m_list.push_back(pParam);
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::moveFromList()
	**
	** Description: move the setting object from list to array
	**
	** Returns: none
	**
	*******************************************************************************/
	void CNfcConfig::moveFromList()
	{
	if (m_list.size() == 0)
	return;

	for (list<const CNfcParam*>::iterator it = m_list.begin(), itEnd = m_list.end(); it != itEnd; ++it)
	push_back(*it);
	m_list.clear();
	}

	/*******************************************************************************
	**
	** Function: CNfcConfig::moveToList()
	**
	** Description: move the setting object from array to list
	**
	** Returns: none
	**
	*******************************************************************************/
	void CNfcConfig::moveToList()
	{
	if (m_list.size() != 0)
	m_list.clear();

	for (iterator it = begin(), itEnd = end(); it != itEnd; ++it)
	m_list.push_back(*it);
	clear();
	}

	/*******************************************************************************
	**
	** Function: CNfcParam::CNfcParam()
	**
	** Description: class constructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcParam::CNfcParam() :
	m_numValue(0)
	{
	}

	/*******************************************************************************
	**
	** Function: CNfcParam::~CNfcParam()
	**
	** Description: class destructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcParam::~CNfcParam()
	{
	}

	/*******************************************************************************
	**
	** Function: CNfcParam::CNfcParam()
	**
	** Description: class copy constructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcParam::CNfcParam(const char* name, const string& value) :
	string(name),
	m_str_value(value),
	m_numValue(0)
	{
	}

	/*******************************************************************************
	**
	** Function: CNfcParam::CNfcParam()
	**
	** Description: class copy constructor
	**
	** Returns: none
	**
	*******************************************************************************/
	CNfcParam::CNfcParam(const char* name, unsigned long value) :
	string(name),
	m_numValue(value)
	{
	}

	/*******************************************************************************
	**
	** Function: GetStrValue
	**
	** Description: API function for getting a string value of a setting
	**
	** Returns: none
	**
	*******************************************************************************/
	extern "C" int GetStrValue(const char* name, char* pValue, unsigned long len)
	{
	CNfcConfig& rConfig = CNfcConfig::GetInstance();

	return rConfig.getValue(name, pValue, len);
	}

	/*******************************************************************************
	**
	** Function: GetNumValue
	**
	** Description: API function for getting a numerical value of a setting
	**
	** Returns: none
	**
	*******************************************************************************/
	extern "C" int GetNumValue(const char* name, void* pValue, unsigned long len)
	{
	if (!pValue)
	return false;

	CNfcConfig& rConfig = CNfcConfig::GetInstance();
	const CNfcParam* pParam = rConfig.find(name);

	if (pParam == NULL)
	return false;
	unsigned long v = pParam->numValue();
	if (v == 0 && pParam->str_len() > 0 && pParam->str_len() < 4)
	{
	const unsigned char* p = (const unsigned char*)pParam->str_value();
	for (int i = 0 ; i < pParam->str_len(); ++i)
	{
	v *= 256;
	v += *p++;
	}
	}
	switch (len)
	{
	case sizeof(unsigned long):
	(static_cast<unsigned long>(pValue)) = (unsigned long)v;
	break;
	case sizeof(unsigned short):
	(static_cast<unsigned short>(pValue)) = (unsigned short)v;
	break;
	case sizeof(unsigned char):
	(static_cast<unsigned char> (pValue)) = (unsigned char)v;
	break;
	default:
	return false;
	}
	return true;
	}

	/*******************************************************************************
	**
	** Function: resetConfig
	**
	** Description: reset settings array
	**
	** Returns: none
	**
	*******************************************************************************/
	extern void resetConfig()
	{
	CNfcConfig& rConfig = CNfcConfig::GetInstance();

	rConfig.clean();
	}

	/*******************************************************************************
	**
	** Function: readOptionalConfig()
	**
	** Description: read Config settings from an optional conf file
	**
	** Returns: none
	**
	*******************************************************************************/
	void readOptionalConfig(const char* extra)
	{
	string strPath;
	strPath.assign(transport_config_path);
	if (alternative_config_path[0] != '\0')
	strPath.assign(alternative_config_path);

	strPath += extra_config_base;
	strPath += extra;
	strPath += extra_config_ext;
	CNfcConfig::GetInstance().readConfig(strPath.c_str(), false);
	}