【文件系统学习】- xulishow520 - 文本数据替换

rt_kprintf("Create Array<br>"); 
/* 打开/text.txt 作写入，如果该文件不存在则建立该文件*/
fd = open("1.txt", O_WRONLY | O_CREAT);
if (fd >= 0)
{
    write(fd, data, sizeof(data));
    close(fd);
}
/* 打开/text.txt 准备作读取动作*/
fd = open("1.txt", O_RDONLY);
if (fd >= 0)
{
    read(fd, buffer, sizeof(buffer));
    close(fd);
    rt_kprintf("%s", buffer);
}
rt_kprintf("Replace 123 to abc<br>");
num = 0;
for(i=0;i<(sizeof(buffer) - 3);i++)
{
    if(buffer* == '1')
    {
        if(buffer[i+1] == '2')
        {
            if(buffer[i+2] == '3')
            {
                temp[num] = i;
                num++;
            }
        }
    }
}
for(i=0;i<num;i++)
{
    for(j=0;j<3;j++)
    {
        buffer[(j + temp*)] = change_temp[j];
    }
}
fd = open("1.txt", O_WRONLY | O_CREAT);
if (fd >= 0)
{
    write(fd, buffer, sizeof(buffer));
    close(fd);
}
rt_kprintf("Show New Array<br>");
fd = open("1.txt", O_RDONLY);
if (fd >= 0)
{
    read(fd, buffer, sizeof(buffer));
    close(fd);
    rt_kprintf("%s", buffer);
}