55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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#ifndef JT808_UTIL_H_
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#define JT808_UTIL_H_
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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// #include <vector>
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// namespace libjt808
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// {
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// 无符号64位整型转无符号字节数组.
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union U64ToU8Array
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{
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unsigned long u64val;
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unsigned char u8array[8];
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};
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// 无符号32位整型转无符号字节数组.
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union U32ToU8Array
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{
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unsigned int u32val;
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unsigned char u8array[4];
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};
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// 无符号16位整型转无符号字节数组.
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union U16ToU8Array
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{
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unsigned short u16val;
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unsigned char u8array[2];
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};
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// 大小端互换.
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unsigned short EndianSwap16(unsigned short u16val);
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// 大小端互换.
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unsigned int EndianSwap32(unsigned int u32val);
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// 转义函数.
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int Escape_C(unsigned char *in, unsigned int inlen, unsigned char *out, unsigned int *outlen);
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int ReverseEscape_C(unsigned char *in, unsigned int inlen, unsigned char *out, unsigned int *outlen);
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// 异或校验.
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unsigned char BccCheckSum(const unsigned char *src, unsigned long len);
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//处理字符串，返回子串在母串的第一个字符的位置
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int strStr(const char * haystack, const char * needle);
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#endif // JT808_UTIL_H_
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