清屏后添加额外空格

Question

我有以下代码：

#include <unistd.h>
#include <stdio.h>
#include <stdbool.h>

#define RESET "\x1b[1J"

#define D "\x1b[0m"
#define Y "\x1b[33;1m"
#define W "\x1b[37;1m"
#define B "\x1b[30;1m"

void printLeft(bool color)
{
  if (color) {
    printf(Y "               __\n"
           "              /  |\n"
           "             /   \\n"
           "            /     |\n"
           W "      _\|  " Y "|" W "[" B "*" W "][" B "*" W "]" Y "|  " W "|/_\n"
           "        \  " Y "|      |  " W "/\n"
           "         --" Y "|" W "\____/" Y "|" W "--\n"
           Y "           \      |\n"
           "            \     /\n"
           "             \   |\n"
           W "             |" Y "\__|" W "|\n"
           "             |    |\n"
           "           ==|    |==");
  } else {
    printf("               __\n"
           "              /  |\n"
           "             /   \\n"
           "            /     |\n"
           "      _\|  |[*][*]|  |/_\n"
           "        \  |      |  /\n"
           "         --|\____/|--\n"
           "           \      |\n"
           "            \     /\n"
           "             \   |\n"
           "             |\__||\n"
           "             |    |\n"
           "           ==|    |==");
  }
}

void printRight(bool color) {
  if (color) {
    printf(Y "               __\n"
           "              |  \\n"
           "              /   \\n"
           "             |     \\n"
           W "        _\|  " Y "|" W "[" B "*" W "][" B "*" W "]" Y "|  " W "|/_\n"
           "          \  " Y "|      |  " W "/\n"
           "           --" Y "|" W "\____/" Y "|" W "--\n"
           Y "             |      /\n"
           "             \     /\n"
           "              |   /\n"
           W "             |" Y "|__/" W "|\n"
           "             |    |\n"
           "           ==|    |==");
  } else {
    printf("               __\n"
           "              |  \\n"
           "              /   \\n"
           "             |     \\n"
           "        _\|  |[*][*]|  |/_\n"
           "          \  |      |  /\n"
           "           --|\____/|--\n"
           "             |      /\n"
           "             \     /\n"
           "              |   /\n"
           "             ||__/|\n"
           "             |    |\n"
           "           ==|    |==");
  }
}

void printBottom(bool color) {
  if (color) {
    printf(Y "               __\n"
           "              |  |\n"
           "             /    \\n"
           "            |      |\n"
           "            |" W "[" B "*" W "][" B "*" W "]" Y"|\n"
           "            |      |\n"
           W "        _\| " Y "|" W "\____/" Y "| " W "|/_\n"
           "          \/" Y "|      |" W "\/\n"
           Y "            |      |\n"
           W "           /\" Y "\    /" W "/\\n"
           "        ==/   " Y "|__|   " W "\==");
  } else {
    printf("               __\n"
           "              |  |\n"
           "             /    \\n"
           "            |      |\n"
           "            |[*][*]|\n"
           "            |      |\n"
           "        _\| |\____/| |/_\n"
           "          \/|      |\/\n"
           "            |      |\n"
           "           /\\    //\\n"
           "        ==/   |__|   \==");
  }
}

int main(int argc, char *argv[])
{
  short counter = 0;
  while (1) {
    printf(RESET);
    if (counter == 0) printLeft(true);
    else if (counter == 2) printRight(true);
    else printBottom(true);
    if (true) {
      printf(Y "\n\n\"IT'S PEANUT BUTTER JELLY TIME\"" D);
    } else {
      printf("\n\n\"IT'S PEANUT BUTTER JELLY TIME\"");
    }
    fflush(stdout);
    usleep(200000);
    counter = (counter + 1) % 4;
  }
  return 0;
}

一切都很好，除了一件事。第一行似乎添加了额外的 space：

我怎样才能摆脱这个额外的space？

Answer 1

尝试在第一行前插入 \n 个字符。

Answer 2

虽然我无法在我的系统上使用控制代码进行测试，但您很可能需要在这段文字后加上 \n：

printf(Y "\n\n\"IT'S PEANUT BUTTER JELLY TIME\"\n" D);

至少，这在 Windows 系统上解决了同样的问题（而且 Y 和 D 似乎是颜色控制代码，所以这不应该影响位置无论如何）。

更新:

似乎也存在 position control code（虽然不能在这里测试）：

#define     GOTOYX   "\x1B[%.2d;%.2dH"
    Set cursor to (y, x). More...

所以您可以使用这段代码来定位您的第一行，而不是那个额外的换行符。

Answer 3

I;m on ubuntu linux 14.04 用 gcc 编译。

以下代码可以干净地编译并执行所需的操作。

我无法让 b[2j（清屏）工作，我发现我不需要它。

一些重大变化是

每个图形的最后一行以\n结束所以最后一行总是立即输出
将图形修改为相同的宽度和高度
修改了 if(true) 语句以在彩色和纯文本输出之间交替
删除了对 fflush()
图形第一行偏移量错误的原因是没有使用正确的间距来考虑图形中一行开头的 w 并且没有输出整个图形输出并且没有使所有图形相同 height/width.

下面的代码就是结果

#define _GNU_SOURCE
#include <stdio.h>
#include <unistd.h>
#include <stdbool.h>

#define D "\x1b[0m"
#define Y "\x1b[33;1m"
#define W "\x1b[37;1m"
#define B "\x1b[30;1m"
#define CURSOR_1_1 "\x1b[1;1f \n"

void printLeft(bool color)
{
  if (color) {
    printf(CURSOR_1_1
           Y
           "               __                               \n"
           "              /  |                              \n"
           "             /   \                             \n"
           "            /     |                             \n"
           W
           "      _\|  " Y "|" W "[" B "*" W "][" B "*" W "]" Y "|  " W "|/_\n"
           "        \  " Y "|      |  " W "/               \n"
           "         --" Y "|" W "\____/" Y "|" W "--      \n"
           Y
           "           \      |                            \n"
           "            \     /                            \n"
           "             \   |                             \n"
           W
           "             |" Y "\__|" W "|                  \n"
           "             |    |                             \n"
           "           ==|    |=                            \n");
  } else {
    printf(CURSOR_1_1
           "               __                               \n"
           "              /  |                              \n"
           "             /   \                             \n"
           "            /     |                             \n"
           "      _\|  |[*][*]|  |/_                       \n"
           "        \  |      |  /                         \n"
           "         --|\____/|--                          \n"
           "           \      |                            \n"
           "            \     /                            \n"
           "             \   |                             \n"
           "             |\__||                            \n"
           "             |    |                             \n"
           "           ==|    |==                           \n");
  }
}

void printRight(bool color) {
  if (color) {
    printf(CURSOR_1_1
           Y
           "               __                               \n"
           "              |  \                             \n"
           "              /   \                            \n"
           "             |     \                           \n"
           W
           "        _\|  " Y "|" W "[" B "*" W "][" B "*" W "]" Y "|  " W "|/_        \n"
           "          \  " Y "|      |  " W "/             \n"
           "           --" Y "|" W "\____/" Y "|" W "--    \n"
           Y
           "             |      /                           \n"
           "             \     /                           \n"
           "              |   /                             \n"
           W
           "             |" Y "|__/" W "|                   \n"
           "             |    |                             \n"
           "           ==|    |==                           \n");
  } else {
    printf(CURSOR_1_1
           "               __                               \n"
           "              |  \                             \n"
           "              /   \                            \n"
           "             |     \                           \n"
           "        _\|  |[*][*]|  |/_                     \n"
           "          \  |      |  /                       \n"
           "           --|\____/|--                        \n"
           "             |      /                           \n"
           "             \     /                           \n"
           "              |   /                             \n"
           "             ||__/|                             \n"
           "             |    |                             \n"
           "           ==|    |==                           \n");
  }
}

void printBottom(bool color) {
  if (color) {
    printf(CURSOR_1_1
           Y
           "               __                               \n"
           "              |  |                              \n"
           "             /    \                            \n"
           "            |      |                            \n"
           "            |" W "[" B "*" W "][" B "*" W "]" Y"|         \n"
           "            |      |                            \n"
           W
           "        _\| " Y "|" W "\____/" Y "| " W "|/_  \n"
           "          \/" Y "|      |" W "\/              \n"
           Y
           "            |      |                            \n"
           W
           "           /\" Y "\    /" W "/\              \n"
           "        ==/   " Y "|__|   " W "\==             \n"
           "                                                \n"
           "                                                \n");
  } else {
    printf(CURSOR_1_1
           "               __                               \n"
           "              |  |                              \n"
           "             /    \                            \n"
           "            |      |                            \n"
           "            |[*][*]|                            \n"
           "            |      |                            \n"
           "        _\| |\____/| |/_                      \n"
           "          \/|      |\/                        \n"
           "            |      |                            \n"
           "           /\\    //\                        \n"
           "        ==/   |__|   \==                       \n"
           "                                                \n"
           "                                                \n");
  }
}

int main( void )
{
    int counter = 0;
    printf(CURSOR_1_1);
    while (1)
    {
        if (counter == 0) printLeft(true);
        else if (counter == 2) printRight(true);
        else printBottom(true);

        if (counter&0x01)
        {
          printf(Y "\n\n\"IT'S PEANUT BUTTER JELLY TIME\"%s\n", D );
        }

        else
        {
          printf("\n\n\"IT'S PEANUT BUTTER JELLY TIME\"\n");
        }
        //fflush(stdout);
        usleep(200000);
        counter = (counter + 1) % 4;
    }
    return 0;
}

清屏后添加额外空格

Extra Spaces Being Added After Clear Screen

c

ansi-escape