mirror of
https://github.com/lionsoul2014/ip2region.git
synced 2025-12-08 19:25:22 +00:00
139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
/**
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* ip2region header file
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*
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* @author chenxin<chenxin619315@gmail.com>
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* @author Leo Ma<http://git.oschina.net/begeekmyfriend>
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*/
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#ifndef _IP2REGION_H
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#define _IP2REGION_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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//yat, just take it as this way, 99 percent and they works find
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#if ( defined(_WIN32) || defined(_WINDOWS_) || defined(__WINDOWS_) )
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# define OS_WINDOW
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#else
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# define OS_LINUX
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#endif
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#ifdef OS_WINDOW
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# define IP2R_API extern __declspec(dllexport)
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#else
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/*platform shared library statement :: unix*/
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# define IP2R_API extern
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#endif
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#define print(str) printf("%s", str)
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#define println(str) printf("%s\n", str)
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/*
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* memory allocation macro definition.
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* cause we should use emalloc,ecalloc .ege. in php.
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* so you could make it better apdat the php environment.
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*/
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#define IP2R_CALLOC(_bytes, _blocks) calloc(_bytes, _blocks)
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#define IP2R_MALLOC(_bytes) malloc(_bytes)
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#define IP2R_FREE(_ptr) free(_ptr)
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typedef unsigned short ushort_t;
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typedef unsigned char uchar_t;
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typedef unsigned int uint_t;
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typedef unsigned long ulong_t;
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#define INDEX_BLOCK_LENGTH 12
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#define TOTAL_HEADER_LENGTH 4096
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/*
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* ip2region properties struct
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*/
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typedef struct {
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uint_t *HeaderSip; //header start ip blocks
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uint_t *HeaderPtr; //header ptr blocks
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uint_t headerLen; //header block number
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char *dbFile; //path of db file
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char *dbBinStr; //db binary string for memory search mode
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uint_t dbSize;
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uint_t firstIndexPtr; //first index ptr
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uint_t lastIndexPtr; //last index ptr
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uint_t totalBlocks; //total index blocks number
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} ip2region_entry;
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typedef ip2region_entry * ip2region_t;
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/*
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* data block
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*/
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typedef struct {
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uint_t city_id;
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char region[256];
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} datablock_entry;
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typedef datablock_entry * datablock_t;
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/**
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* create a new ip2region object
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*
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* @param ip2rObj
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* @param dbFile path
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*/
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IP2R_API uint_t ip2region_create(ip2region_t, char *);
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/**
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* destroy the specified ip2region object
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*
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* @param ip2region_t
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*/
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IP2R_API uint_t ip2region_destroy(ip2region_t);
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/**
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* get the region associated with the specified ip address with memory binary search algorithm
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*
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* @param ip2region_t
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* @param uint_t
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* @param datablock_t
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* @date 2016/06/30
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*/
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IP2R_API uint_t ip2region_binary_search(ip2region_t, uint_t, datablock_t);
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IP2R_API uint_t ip2region_binary_search_string(ip2region_t, char *, datablock_t);
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/**
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* get the region associated with the specified ip address with b-tree algorithm
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*
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* @param ip2rObj
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* @param ip
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* @param datablock
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* @return uint_t
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*/
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IP2R_API uint_t ip2region_btree_search(ip2region_t, uint_t, datablock_t);
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IP2R_API uint_t ip2region_btree_search_string(ip2region_t, char *, datablock_t);
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/**
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* get a unsinged long(4bytes) from a specified buffer start from the specified offset
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*
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* @param buffer
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* @param offset
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* @return uint_t
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*/
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IP2R_API uint_t getUnsignedInt(char *, int);
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/**
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* string ip to long
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*
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* @param ip
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* @return uint_t
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*/
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IP2R_API uint_t ip2long(char *);
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/**
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* long to string ip
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*
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* @param ip
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* @param buffer
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* @return uint_t(1 for success and 0 for failed)
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*/
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IP2R_API uint_t long2ip(uint_t, char *);
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#endif /*end ifndef*/
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