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#!/usr/bin/python3
from lintian_brush.fixer import report_result, fixed_lintian_tag
import os
SCRIPTS = ['preinst', 'prerm', 'postinst', 'config', 'postrm']
def replace_set_e(path):
lines = []
try:
with open(path, 'rb') as f:
lines = list(f.readlines())
except (FileNotFoundError, IsADirectoryError):
return
if b'set -e\n' in lines:
return
# TODO(jelmer): Handle -e in combination with other flags.
if lines[0] != b"#!/bin/sh -e\n":
return
lines[0] = b'#!/bin/sh\n'
for i, line in enumerate(lines[1:]):
if line == b'set -e\n':
return
if (not (line.startswith(b'#') or line == b'\n') or
line.strip() == b'#DEBHELPER#'):
fixed_lintian_tag(
'source', 'maintainer-script-without-set-e',
os.path.basename(path))
if not lines[i-1].strip():
lines.insert(i, b'set -e\n')
lines.insert(i+1, b'\n')
else:
lines.insert(i, b'\n')
lines.insert(i+1, b'set -e\n')
break
with open(path, 'wb') as f:
f.writelines(lines)
for name in SCRIPTS:
replace_set_e(os.path.join('debian', name))
report_result('Use set -e rather than passing -e on the shebang-line.')
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