C语言版字符串转换为二进制

最新推荐文章于 2024-03-12 11:25:34 发布

她的睫毛613

最新推荐文章于 2024-03-12 11:25:34 发布

阅读量6.6k

点赞数 3

分类专栏： Windows平台

本文链接：https://blog.youkuaiyun.com/qq_16124631/article/details/28922025

版权

Windows平台专栏收录该内容

4 篇文章

订阅专栏

此程序功能:
假如： unsigned char *szBuf = "1234567890 ";
那么使用此程序后：
unsigned char *szBuf ="\x12\x34\x56\x78"; //即成员是 0x12, 0x34, 0x56, 0x78,0x90。

请大家支持一下我的商城: http://www.yangcheng520.com/goods.php?id=14604

点击(此处)折叠或打开

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#define APP_SUCC 0
#define APP_FAIL -1
#define MAX_NUM 8000
/******************************************************************************
* 函数名称：PubAscToHex
* 函数介绍：将AscII码的字符串转换成压缩的HEX格式
* 函数描述：非偶数长度的字符串根据对齐方式，采取左补0，右补F方式
* 入口参数：pszAsciiBuf ---- 被转换的ASCII字符串
* nLen ---- 输入数据长度(ASCII字符串的长度)
* cType ---- 对齐方式 0－左对齐 1－右对齐
* 出口参数：pszBcdBuf ---- 转换输出的HEX数据
* 返回值：APP_SUCC 0 成功; APP_FAIL -1 失败
* 修改日期：2006-09-11
*******************************************************************************/
int PubAscToHex (const unsigned char* pszAsciiBuf, int nLen, char cType, unsigned char* pszBcdBuf)
{
int i = 0;
char cTmp, cTmp1;
if (pszAsciiBuf == NULL)
{
return APP_FAIL;
}
if (nLen & 0x01 && cType)/*判别是否为奇数以及往那边对齐*/
{
cTmp1 = 0 ;
}
else
{
cTmp1 = 0x55 ;
}
for (i = 0; i < nLen; pszAsciiBuf ++, i ++)
{
if ( *pszAsciiBuf >= 'a' )
{
cTmp = *pszAsciiBuf - 'a' + 10 ;
}
else if ( *pszAsciiBuf >= 'A' )
{
cTmp = *pszAsciiBuf - 'A' + 10 ;
}
else if ( *pszAsciiBuf >= '0' )
{
cTmp = *pszAsciiBuf - '0' ;
}
else
{
cTmp = *pszAsciiBuf;
cTmp&=0x0f;
}
if ( cTmp1 == 0x55 )
{
cTmp1 = cTmp;
}
else
{
*pszBcdBuf ++ = cTmp1 << 4 | cTmp;
cTmp1 = 0x55;
}
}
if (cTmp1 != 0x55)
{
*pszBcdBuf = cTmp1 << 4;
}
return APP_SUCC;
}
int PubDispData(const unsigned char *data, int len)
{
int i = 0;
int j = 1;
for(i = 0; i < len; i++)
{
if(data[i] <= 9)
{
printf("%02x ", data[i]);
}
else
{
printf("%02x ", data[i]);
}
if(i == (8*j-1))
{
printf("\n");
j++;
}
}
printf("\n");
return 0;
}
int main(int argc, char *argv[])
{
int i, j;
int len, rec;
int nENnum = 0;
int recTmp = 0;
char *asc_in = "ASC_IN";
char *hex_out = "HEX_OUT";
FILE *out;
unsigned char in_str[128];
unsigned char szTmpBuf[MAX_NUM];
unsigned char szHexbuf[MAX_NUM];
unsigned char szAscbuf[MAX_NUM];
memset(in_str, 0, 128);
memset(szAscbuf, 0, sizeof(szAscbuf));
memset(szHexbuf, 0, sizeof(szHexbuf));
rec = 0;
len = MAX_NUM+1;
out = fopen(asc_in, "rb");
if(out != NULL){
printf("成功打开了 ASC_IN文件\n");
}
else{
printf("打开文件出错!");
getch();
return -1;
}
rec = fread(szAscbuf, sizeof(unsigned char), len, out);
printf("读出的字符串长度: %d\n", rec);
//PubDispData(szAscbuf, rec);
if(rec >= len){
printf("读出的字符串长度大于8k!\n");
fclose(out);
getch();
return APP_FAIL;
}
if(rec == 0){
printf("ASC_IN文件没有数据!\n");
fclose(out);
getch();
return APP_FAIL;
}
fclose(out);
memcpy(szTmpBuf, szAscbuf, rec);
recTmp = rec;
j = 0;
for(i = 0; i < recTmp; i++)
{
if(szTmpBuf[i] == 0x0D && szTmpBuf[i+1] == 0x0A)
{
rec -= 2;
nENnum++;
i++;
continue;
}
else{
szAscbuf[j] = szTmpBuf[i];
j++;
}
}
printf("去点回车字节个数:%d,包含%d个字节\n", nENnum, nENnum*2);
printf("去点回车字节后长度:%d", rec);
len = rec;
PubAscToHex(szAscbuf, len, 0, szHexbuf);
out = fopen(hex_out, "wb");
fwrite(szHexbuf, sizeof(unsigned char), (len/2+len%2), out);
fclose(out);
/*
out = fopen("Test", "r+");
fread(in_str, sizeof(unsigned char), len, out);
for(i = 0; i < len; i++)
printf("%x ", in_str[i]);
fclose(out);*/
printf("\n");
getch();
/*
{
memset(in_str, 0, 128);
int fd;
fd = open("PText", O_CREAT|O_RDWR, 0666);
write(fd, string, len);
close(fd);
fd = open("PText", O_RDWR);
read(fd, in_str, len);
for(i = 0; i < len; i++)
printf("%x ", in_str[i]);
close(fd);
printf("\n");
}
{
out = fopen("TTest", "w+");
for(i = 0; i < len; i++){
fprintf(out, "0x%x ", string[i]);
}
fclose(out);
memset(in_str, 0, 128);
out = fopen("TTest", "r+");
for(i = 0; i < len; i++){
fscanf(out, "%x", &in_str[i]);
}
for(i = 0; i < len; i++)
printf("%x ", in_str[i]);
fclose(out);
printf("\n");
}
*/
return 0;
}