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Diffstat (limited to 'tools/display-fpathconf.py')
-rw-r--r-- | tools/display-fpathconf.py | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/display-fpathconf.py b/tools/display-fpathconf.py new file mode 100644 index 0000000..d40cbae --- /dev/null +++ b/tools/display-fpathconf.py @@ -0,0 +1,41 @@ +#!/usr/bin/env python +"""Displays os.fpathconf values related to terminals. """ +from __future__ import print_function +import sys +import os + + +def display_fpathconf(): + DISP_VALUES = ( + ('PC_MAX_CANON', ('Max no. of bytes in a ' + 'terminal canonical input line.')), + ('PC_MAX_INPUT', ('Max no. of bytes for which ' + 'space is available in a terminal input queue.')), + ('PC_PIPE_BUF', ('Max no. of bytes which will ' + 'be written atomically to a pipe.')), + ('PC_VDISABLE', 'Terminal character disabling value.') + ) + FMT = '{name:<13} {value:<5} {description}' + + # column header + print(FMT.format(name='name', value='value', description='description')) + print(FMT.format(name=('-' * 13), value=('-' * 5), description=('-' * 11))) + + fd = sys.stdin.fileno() + for name, description in DISP_VALUES: + key = os.pathconf_names.get(name, None) + if key is None: + value = 'UNDEF' + else: + try: + value = os.fpathconf(fd, name) + except OSError as err: + value = 'OSErrno {0.errno}'.format(err) + if name == 'PC_VDISABLE': + value = hex(value) + print(FMT.format(name=name, value=value, description=description)) + print() + + +if __name__ == '__main__': + display_fpathconf() |