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reformat.py
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reformat.py
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#!/usr/bin/env python3
# -------------------------------------------------------------
# Salt — Reformat Salt states and source code files
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Project: Nasqueron
# Created: 2020-02-26
# License: BSD-2-Clause
# Description: This script detects multi-lines patterns
# and rewrite them to apply the new style.
#
# Before: \n BLOCK_START [...] BLOCK_START
# After: \n BLOCK_START [...] BLOCK_END
# -------------------------------------------------------------
import sys
BLOCK_START = "# -------------------------------------------------------------\n"
BLOCK_END = "# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n"
def usage():
print(f"usage: {sys.argv[0]} <file to reformat>", file=sys.stderr)
class Reformater:
def __init__(self, file):
self.file = file
self.pattern_detection_counter = 0
def reformat_inline(self):
buffer = []
with open(self.file, "r+") as fd:
for line in fd:
buffer.append(self.reformat_line(line))
fd.seek(0)
fd.truncate()
fd.writelines(buffer)
def reformat_line(self, line):
if self.pattern_detection_counter == 0 and line == "\n":
self.pattern_detection_counter += 1
elif self.pattern_detection_counter == 1 and line == BLOCK_START:
self.pattern_detection_counter += 1
elif self.pattern_detection_counter == 2:
if line == BLOCK_END:
# We're probably in a header block or a correct one, so skip
self.pattern_detection_counter = 0
elif line == BLOCK_START:
# We've got a winner
self.pattern_detection_counter = 0
return BLOCK_END
elif not line.startswith("#"):
# Let's go on, it's a multiline comments block
self.pattern_detection_counter = 0
else:
self.pattern_detection_counter = 0
return line
if __name__ == "__main__":
if len(sys.argv) < 2:
usage()
sys.exit(1)
file_to_reformat = sys.argv[1]
Reformater(file_to_reformat).reformat_inline()

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