github.com/easysoft/zendata@v0.0.0-20240513203326-705bd5a7fd67/pkg/utils/display/screen.go (about)

     1  package display
     2  
     3  import (
     4  	"os"
     5  	"os/exec"
     6  	"regexp"
     7  	"strconv"
     8  	"strings"
     9  
    10  	commonUtils "github.com/easysoft/zendata/pkg/utils/common"
    11  	shellUtils "github.com/easysoft/zendata/pkg/utils/shell"
    12  )
    13  
    14  func GetScreenSize() (int, int) {
    15  	var cmd string
    16  	var width int
    17  	var height int
    18  
    19  	if commonUtils.IsWin() {
    20  		cmd = "mode" // tested for win7
    21  		out, _ := shellUtils.Exec(cmd)
    22  
    23  		//out := `设备状态 CON:
    24  		//		---------
    25  		//			行:　       300
    26  		//			列:　　     80
    27  		//			键盘速度:   31
    28  		//			键盘延迟:　 1
    29  		//			代码页:     936
    30  		//`
    31  		myExp := regexp.MustCompile(`CON:\s+[^\s]+\s*(.*?)(\d+)\s\s*(.*?)(\d+)\s`)
    32  		arr := myExp.FindStringSubmatch(out)
    33  		if len(arr) > 4 {
    34  			height, _ = strconv.Atoi(strings.TrimSpace(arr[2]))
    35  			width, _ = strconv.Atoi(strings.TrimSpace(arr[4]))
    36  		}
    37  	} else {
    38  		width, height = noWindowsSize()
    39  	}
    40  
    41  	return width, height
    42  }
    43  
    44  func noWindowsSize() (int, int) {
    45  	cmd := exec.Command("stty", "size")
    46  	cmd.Stdin = os.Stdin
    47  	out, err := cmd.Output()
    48  	output := string(out)
    49  
    50  	if err != nil {
    51  		return 0, 0
    52  	}
    53  	width, height, err := parseSize(output)
    54  
    55  	return width, height
    56  }
    57  func parseSize(input string) (int, int, error) {
    58  	parts := strings.Split(input, " ")
    59  	h, err := strconv.Atoi(parts[0])
    60  	if err != nil {
    61  		return 0, 0, err
    62  	}
    63  	w, err := strconv.Atoi(strings.Replace(parts[1], "\n", "", 1))
    64  	if err != nil {
    65  		return 0, 0, err
    66  	}
    67  	return int(w), int(h), nil
    68  }