如何根据也调整大小的终端宽度打印字符数? [英] How to print number of characters based on terminal width that also resize?

问题描述

不确定是否可能，但我希望做一些事情，我可以在一行上为终端的宽度打印一个连字符.如果窗口的宽度被调整大小，显示的连字符的数量将相应地打印出来.

Not sure if it's possible, but I was hoping to do something where I can print a hyphen for the width of the terminal on one line. If the window's width is resized, the amount of hyphens displayed would print accordingly.

推荐答案

这是一个更详细的版本，允许根据终端的尺寸始终打印您想要的任何内容.您还可以在未打印任何内容时调整终端大小，内容将相应调整大小.

This is a more elaborated version that allows printing whatever you want always according to the dimension of the terminal. You can also resize the terminal while nothing is being printed and the content will be resized accordingly.

我对代码进行了一些注释...但如果您需要，我可以更明确.

I commented the code a little bit... but if you need I can be more explicit.

#!/usr/bin/env python2

import threading
import Queue
import time
import sys
import subprocess
from backports.shutil_get_terminal_size import get_terminal_size

printq = Queue.Queue()
interrupt = False
lines = []

def main():

    ptt = threading.Thread(target=printer) # Turn the printer on
    ptt.daemon = True
    ptt.start()

    # Stupid example of stuff to print
    for i in xrange(1,100):
        printq.put(' '.join([str(x) for x in range(1,i)]))           # The actual way to send stuff to the printer
        time.sleep(.5)

def split_line(line, cols):
    if len(line) > cols:
        new_line = ''
        ww = line.split()
        i = 0
        while len(new_line) <= (cols - len(ww[i]) - 1):
            new_line += ww[i] + ' '
            i += 1
            print len(new_line)
        if new_line == '':
            return (line, '')

        return (new_line, ' '.join(ww[i:]))
    else:
        return (line, '')


def printer():

    while True:
        cols, rows = get_terminal_size() # Get the terminal dimensions
        msg = '#' + '-' * (cols - 2) + '#\n' # Create the
        try:
            new_line = str(printq.get_nowait())
            if new_line != '!@#EXIT#@!': # A nice way to turn the printer
                                         # thread out gracefully
                lines.append(new_line)
                printq.task_done()
            else:
                printq.task_done()
                sys.exit()
        except Queue.Empty:
            pass

        # Build the new message to show and split too long lines
        for line in lines:
            res = line          # The following is to split lines which are
                                # longer than cols.
            while len(res) !=0:
                toprint, res = split_line(res, cols)
                msg += '\n' + toprint

        # Clear the shell and print the new output
        subprocess.check_call('clear') # Keep the shell clean
        sys.stdout.write(msg)
        sys.stdout.flush()
        time.sleep(.5)


if __name__ == '__main__':
    main()

这篇关于如何根据也调整大小的终端宽度打印字符数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！