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標題: 十六進制數據改寫為C語言數組形式 [打印本頁]

作者: 馮特洛夫斯基 時間: 2022-10-13 10:58
標題: 十六進制數據改寫為C語言數組形式
/*
十六進制數據改寫為C語言數組形式
如：
0111
022222
03333333
生成：
{0x01,0x11},
{0x02,0x22,0x22},
{0x03,0x33,0x33,0x33},

如果第一個數為數據長度信息，第二個數為地址，其他為數據
如：
0111
022222
03333333
生成：
{0x01,0x01,0x11},
{0x02,0x02,0x22,0x22},
{0x03,0x03,0x33,0x33,0x33},

*/

#include <stdio.h>
#include <string.h>

int main(void)
{
      FILE *fp = NULL;
      int count = 0;
      int num = 0;
      int num2 = 0;
      int num3 = 0;
      int num4 = 0;
      char buf[16000] = {}; //存儲原來的數據
      char buf2[16000] = {}; //原來的數據加上每行的數據個數
      char result[16000] = {}; //改寫為C語言數組形式。
      fp = fopen("str.txt", "r");
      if  (fp == NULL) {
            printf("open str.txt err!\n");
            return -1;
      }

      count = fread(buf, sizeof(char), sizeof(buf), fp);
      printf("read %d bytes\n", count);
      if (count < 0) {
            printf("read err!\n");
            return -1;
      }
      fclose(fp);
/* 每行前面兩個數據為該行有效16進制數據的長度,不需要長度信息，可以把下面這段屏蔽掉 */
#if 1
      num2 += 2;
      num3 = 0;
      while(num < count) {
            while(buf[num] != '\n') {
                     buf2[num2] = buf[num];
                     num2++;
                     num++;
            }
            if (buf[num] == '\n') {
                     buf2[num2] = buf[num];
                     num4 = (num2 - num3 - 1) / 2 - 1;
                     if (num4 / 16 >= 10)
                              buf2[num3] = num4 / 16 % 10 + 'A';
                     else
                              buf2[num3] = num4 / 16 + '0';

                     if (num4 % 16 >= 10)
                              buf2[num3+1] = num4 % 16 % 10 + 'A';
                     else
                              buf2[num3+1] = num4 % 16 + '0';

                     printf("num=%d, num2=%d, num3=%d, num4=%d\n", num, num2, num3, num4);
                     num3 = num2 + 1;
                     num2 += 3;
                     num++;
            }
      }
      memset(buf, 0, sizeof(buf));
      memcpy(buf, buf2, sizeof(buf));
      printf("buf = %s\n", buf);
      count = num2;
      num = 0;
      num2 = 0;
      num3 = 0;
      num4 = 0;
#endif

      result[0] = '{';
      result[1] = '0';
      result[2] = 'x';
      num2 = 3;
      while (num < count) {
            num3++;
            if (buf[num] == '\n') {
                     num3 = 0;
                     result[num2++] = '}';
                     result[num2++] = ',';
                     result[num2++] = buf[num];
                     result[num2++] = '{';
                     result[num2++] = '0';
                     result[num2++] = 'x';
                     num++;
                     continue;
            }
            if (num3 <= 2) {
                     result[num2++] = buf[num];
            }
            if (num3 == 2) {
                     if (buf[num+1] != '\n') {
                              result[num2++] = ',';
                              result[num2++] = '0';
                              result[num2++] = 'x';
                     }
                     num3 = 0;
            }
            num++;
      }
      fp = fopen("result.txt", "w+");
      if  (fp == NULL) {
            printf("open result.txt err!\n");
            return -1;
      }
      count = fwrite(result, 1, num2+1, fp);
      printf("write %d bytes\n", count);
      if (count < 0) {
            printf("write result.txt err!\n");
            return -1;
      }
      fclose(fp);
      return 0;
}

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