Re: [語法] 用c++寫閃爍

[wowtiger (小虎)]

MSVC CRT限用

#include <windows.h>
#include <stdio.h>

char spacebuf[128]
="
                                                     ";

#define MAXBUFSIZE 4096

int printf (const char *format, ...)
{
  int n_chars,count=0;
  char output[MAXBUFSIZE];
  HANDLE stdout_handle;
  va_list argptr;

  va_start (argptr, format);
  stdout_handle = GetStdHandle (STD_OUTPUT_HANDLE);
  n_chars = vsprintf (output, format, argptr);

  while(n_chars>count) {
    int num;
    unsigned long written;
    if(*(output+count)==0x1b&&*(output+count+1)=='[') {
      int new_attr;
      CONSOLE_SCREEN_BUFFER_INFO info;
      GetConsoleScreenBufferInfo (stdout_handle, &info);
      new_attr = info.wAttributes;
      count++;
AGAIN:
      count++;
      for(num=0;*(output+count)>='0'&&*(output+count)<='9';count++)
        num=(num*10)+(*(output+count)-0x30);
      if(num>=40)      { num-=40;
new_attr=(new_attr&0x8f)+((num&1)<<6)+((num&2)<<4)+((num&4)<<2); }
      else if(num>=30) { num-=30;
new_attr=(new_attr&0xf8)+((num&1)<<2)+((num&2)   )+((num&4)>>2); }
      else switch(num) {
      case 5: new_attr|=BACKGROUND_INTENSITY; break;
      case 1: new_attr|=FOREGROUND_INTENSITY; break;
      case 0: new_attr=(FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE);
break;
      }    if (*(output+count)==';') goto AGAIN;
      else if (*(output+count)=='m') SetConsoleTextAttribute (stdout_handle,
new_attr);
      else if (*(output+count)=='J'&&num==2) {} //cls code...
      else if (*(output+count)=='K')
WriteConsole(stdout_handle,spacebuf,info.dwSize.X-info.dwCursorPosition.X-1,&written,0);
      else goto NOANSI;
      count++;
    }
NOANSI:
    for(num=0;*(output+count+num)!=0x1b&&*(output+count+num)!=0;num++);
    WriteConsole(stdout_handle,output+count,num,&written,0);
    count+=num;
  }
  return n_chars;
}

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 59.120.96.114