Reading of ini file
Ini.h code
# ifndef INI_H
# define INI_H
# include
# include
Using namespace std
# define CONFIGLEN 256
Enum INI_RES
{
INI_SUCCESS, / / successful
INI_ERROR, / / Common error
INI_OPENFILE_ERROR, / / failed to open the file
INI_NO_ATTR / / has no corresponding key value
}
/ / subkey index subkey value
Typedef map KEYMAP
/ / Primary key index primary key value
Typedef map MAINKEYMAP
/ / basic operation class of config file
Class CIni
{
Public:
/ / Constructor
CIni ()
/ / Analysis of sufficient function
Virtual ~ CIni ()
Public:
/ / get the key value of × ×
Int GetInt (const char* mAttr, const char* cAttr)
/ / get the string of the key value
Char* GetStr (const char* mAttr, const char* cAttr)
/ / Open the config file
INI_RES OpenFile (const char* pathName, const char* type)
/ / close the config file
INI_RES CloseFile ()
Protected:
/ / read config file
INI_RES GetKey (const char* mAttr, const char* cAttr, char* value)
Protected:
/ / File handle opened
FILE* m_fp
Char m_ szKey[CONFIGLEN]
MAINKEYMAP m_Map
}
# endif
Ini.cpp code
# include "ini.h"
/ *
* function: constructor
* parameters: none
* return value: none
* remarks:
* * /
CIni::CIni ()
{
Memset (m_szKey, 0, sizeof (m_szKey))
M_fp = NULL
}
/ *
* function: destructor
* parameters: none
* return value: none
* remarks:
* * /
CIni::~CIni ()
{
M_Map.clear ()
}
/ *
* function: open file function
* parameters: none
* return value:
* remarks:
* * /
INI_RES CIni::OpenFile (const char* pathName, const char* type)
{
String szLine, szMainKey, szLastMainKey, szSubKey
Char strLine [CONFIGLEN] = {0}
KEYMAP mLastMap
Int nIndexPos =-1
Int nLeftPos =-1
Int nRightPos =-1
M_fp = fopen (pathName, type)
If (m_fp = = NULL)
{
Printf ("open inifile% s error!\ n", pathName)
Return INI_OPENFILE_ERROR
}
M_Map.clear ()
While (fgets (strLine, CONFIGLEN, m_fp))
{
SzLine.assign (strLine)
/ / remove unnecessary characters from a string
NLeftPos = szLine.find ("\ n")
If (string::npos! = nLeftPos)
{
SzLine.erase (nLeftPos, 1)
}
NLeftPos = szLine.find ("\ r")
If (string::npos! = nLeftPos)
{
SzLine.erase (nLeftPos, 1)
}
/ / determine whether it is a primary key
NLeftPos = szLine.find ("[")
NRightPos = szLine.find ("]")
If (nLeftPos! = string::npos & & nRightPos! = string::npos)
{
SzLine.erase (nLeftPos, 1)
NRightPos--
SzLine.erase (nRightPos, 1)
M _ Map [szLastMainKey] = mLastMap
MLastMap.clear ()
SzLastMainKey = szLine
}
Else
{
/ / whether it is a subkey
If (nIndexPos = szLine.find ("="), string::npos! = nIndexPos)
{
String szSubKey, szSubValue
SzSubKey = szLine.substr (0, nIndexPos)
SzSubValue = szLine.substr (nIndexPos + 1, szLine.length ()-nIndexPos-1)
MLastMap [szSubKey] = szSubValue
}
Else
{
/ / TODO: contents such as comments that do not conform to the ini key value template
}
}
}
/ / insert the last primary key
M _ Map [szLastMainKey] = mLastMap
Return INI_SUCCESS
}
/ *
* function: turn off file function
* parameters: none
* return value:
* remarks:
* * /
INI_RES CIni::CloseFile ()
{
If (m_fp! = NULL)
{
Fclose (m_fp)
M_fp = NULL
}
Return INI_SUCCESS
}
/ *
* function: a string that gets a key value under [SECTION]
* parameters:
* char* mAttr input parameter primary key
* char* cAttr input parameter subkey
* char* value output parameter subkey value
* return value:
* remarks:
* * /
INI_RES CIni::GetKey (const char* mAttr, const char* cAttr, char* pValue)
{
KEYMAP mKey = m _ map [mAttr]
String sTemp = mKey [cAttr]
Strcpy (pValue, sTemp.c_str ())
Return INI_SUCCESS
}
/ *
* function: obtain the key value of × ×
* parameters:
* cAttr primary key
* cAttr subkey
* return value: if the value is normal, if the corresponding value is not read successfully, 0 is returned (the key value itself is 0 does not conflict)
* remarks:
* * /
Int CIni::GetInt (const char* mAttr, const char* cAttr)
{
Int nRes = 0
Memset (m_szKey, 0, sizeof (m_szKey))
If (INI_SUCCESS = = GetKey (mAttr, cAttr, m_szKey))
{
NRes = atoi (m_szKey)
}
Return nRes
}
/ *
* function: the string that gets the key value
* parameters:
* cAttr primary key
* cAttr subkey
* return value: "NULL" is returned if the read subkey string is not read successfully.
* remarks:
* * /
Char* CIni::GetStr (const char* mAttr, const char* cAttr)
{
Memset (m_szKey, 0, sizeof (m_szKey))
If (INI_SUCCESS! = GetKey (mAttr, cAttr, m_szKey))
{
Strcpy (m_szKey, "NULL")
}
Return m_szKey
}
Config.ini
[cctv.thrift]
IP=192.168.37.123
Port=7001
Username=admin
Password=admin
test
Static void ReadIniFile ()
{
CIni ini
Ini.OpenFile ("config.ini", "r")
Char * pVal1 = ini.GetStr ("cctv.thrift", "IP")
Int nKey = ini.GetInt ("cctv.thrift", "Port")
}
Be careful
The string returned by GetStr must be saved to other variables immediately. If GetInt is called again at this time, the value of the above pVal1 will be changed.
