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#!/usr/bin/env python3
"""
Cross-platform compatibility tool: Convert multi-line shell commands with backslash (\) line continuation to single-line commands
Usage: python convert_to_single_line.py input_file [output_file]
If no output file is specified, the input file will be overwritten
"""
import sys
import os
import re
def convert_multiline_to_single_line(file_path, output_path=None):
"""
Convert multi-line commands (ending with backslash) to single-line commands
"""
if output_path is None:
output_path = file_path
try:
with open(file_path, 'r', encoding='utf-8') as file:
content = file.read()
# Preserve the original file permissions
original_mode = os.stat(file_path).st_mode
# Use regular expression to find lines ending with \ and remove newlines and \
pattern = r'\\\s*\n\s*'
converted_content = re.sub(pattern, ' ', content)
# Write the converted content to the output file
with open(output_path, 'w', encoding='utf-8') as file:
file.write(converted_content)
# Restore the original file permissions
os.chmod(output_path, original_mode)
print(f"Successfully converted {file_path} to single-line command format, saved to {output_path}")
return True
except Exception as e:
print(f"Error: {str(e)}")
return False
def convert_single_line_to_multiline(file_path, output_path=None, line_prefix="--"):
"""
Convert single-line commands back to multi-line format (using \ continuation), with each parameter on a separate line
Mainly used to split parameters starting with line_prefix into separate lines
"""
if output_path is None:
output_path = file_path
try:
with open(file_path, 'r', encoding='utf-8') as file:
content = file.read()
# Preserve the original file permissions
original_mode = os.stat(file_path).st_mode
# Find command lines and convert them
lines = content.split('\n')
converted_lines = []
for line in lines:
if line_prefix in line:
# Split the command line
parts = line.split(line_prefix)
# Save the first part (command name)
first_part = parts[0].rstrip() + " \\"
converted_lines.append(first_part)
# Process each parameter
for i, part in enumerate(parts[1:], 1):
if part.strip():
# If not the last parameter, add continuation character
if i < len(parts) - 1:
converted_lines.append(line_prefix + part.rstrip() + " \\")
else:
converted_lines.append(line_prefix + part.rstrip())
else:
converted_lines.append(line)
# Write the converted content to the output file
with open(output_path, 'w', encoding='utf-8') as file:
file.write('\n'.join(converted_lines))
# Restore the original file permissions
os.chmod(output_path, original_mode)
print(f"Successfully converted {file_path} to multi-line command format, saved to {output_path}")
return True
except Exception as e:
print(f"Error: {str(e)}")
return False
def main():
if len(sys.argv) < 2:
print(f"Usage: {sys.argv[0]} input_file [output_file] [--to-multiline]")
return
file_path = sys.argv[1]
output_path = sys.argv[2] if len(sys.argv) > 2 and not sys.argv[2].startswith('--') else None
# Check if conversion to multi-line is needed
to_multiline = '--to-multiline' in sys.argv
if not os.path.exists(file_path):
print(f"Error: File {file_path} does not exist")
return
if to_multiline:
convert_single_line_to_multiline(file_path, output_path)
else:
convert_multiline_to_single_line(file_path, output_path)
if __name__ == "__main__":
main()
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