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Use the nice array based interface for fcntl.ioctl

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Kovid Goyal
2018-02-20 17:01:14 +05:30
parent e44910212c
commit 95384d437a
2 changed files with 9 additions and 9 deletions
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graphics-protocol.asciidoc
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@@ -46,10 +46,10 @@ printf("number of columns: %i, number of rows: %i, screen width: %i, screen heig
In Python:
```py
import struct, fcntl, termios
s = struct.pack('HHHH', 0, 0, 0, 0)
x = struct.unpack('HHHH', fcntl.ioctl(1, termios.TIOCGWINSZ, s))
print(f'number of columns: {x[0]}, number of rows: {x[1]}, screen width: {x[2]}, screen height: {x[3]}')
import array, fcntl, termios
buf = array.array('H', [0, 0, 0, 0])
fcntl.ioctl(sys.stdout, termios.TIOCGWINSZ, buf)
print('number of columns: {}, number of rows: {}, screen width: {}, screen height: {}'.format(*buf))
```
Note that some terminals return `0` for the width and height values. Such terminals should be modified to return the correct values.