170 lines
4.6 KiB
Python
Executable File
170 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# SSnR.py
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#
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# Copyright 2017 Rémi BERTHO <remi.bertho@dalan.fr>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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#
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import sys
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import argparse
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import regex
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def main():
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"""
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Main function
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"""
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parser = argparse.ArgumentParser(description='Search and replace tool', prog='SSnR')
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parser.add_argument('-e', '--regex', help='Regex', required=True)
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parser.add_argument('-s', '--string', help='String', required=False)
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parser.add_argument('-i', '--input', help='Input file', required=False)
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parser.add_argument('-o', '--output', help='Output file', required=False)
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parser.add_argument('-r', '--replace', help='Replace', required=False)
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parser.add_argument('-m', '--print_nb_match', help='Print the number of match in replace',
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required=False, action='store_true')
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parser.add_argument('-c', '--ignore_case', help='Ignore the case',
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required=False, action='store_true')
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args = vars(parser.parse_args())
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# Get input
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if args["input"] is not None:
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try:
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with open(args["input"], "r") as file:
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string = file.read()
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except OSError as exception:
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print("Error: file not found: " + str(exception))
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return -1
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is_file = True
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elif args["string"] is not None:
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string = args["string"]
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is_file = False
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else:
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print("Error: You need an input string or file")
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return -1
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# Get output
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if args["output"] is not None:
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try:
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output_file = open(args["output"], "w")
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except OSError as exception:
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print("Error: file not found: " + str(exception))
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return -1
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use_output_file = True
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else:
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use_output_file = False
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# Compile regex
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try:
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ex = compile_regex(args["regex"])
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except SyntaxError as exception:
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print("Error when compiling regex: " + str(exception))
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return -1
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except regex.error as exception:
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print("Error when compiling regex: " + exception.msg)
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return -1
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# Search or replace
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if args["replace"] is not None:
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replace_string = replace(ex, string, args["replace"], args["print_nb_match"])
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if use_output_file:
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output_file.write(replace_string)
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else:
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print(replace_string)
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else:
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search(ex, string, is_file)
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return 0
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def compile_regex(ex):
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"""
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Compile regex
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:param ex: Regular expression
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"""
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regex_compile = regex.compile(ex, regex.MULTILINE)
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if regex_compile is None:
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raise SyntaxError('Error in the regex')
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else:
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return regex_compile
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def search(ex, string, is_file):
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"""
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Search in a string
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:param ex: Regular expression
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:param string: A string
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"""
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if is_file:
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new_lines = get_line_pos(string)
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ite = ex.finditer(string)
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nb_match = 0
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for match in ite:
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nb_match += 1
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if is_file:
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num_line, begin_pos, end_pos = find_line(match.start(0), match.end(0), new_lines)
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print(" - Found \"" + match.group(0) + "\" at line " + str(num_line) + " [" + str(begin_pos) +
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":" + str(end_pos) + "]")
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else:
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print(" - Found \"" + match.group(0) + "\" at [" + str(match.start(0) + 1) +
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":" + str(match.end(0)) + "]")
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print("Number of match: " + str(nb_match))
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def replace(ex, string, replace_string, print_nb):
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"""
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Replace in a string
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:param ex: Regular expression
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:param string: A string
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:param print_nb: Print the number of match
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"""
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res = ex.subn(replace_string, string)
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if print_nb:
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print("Number of match: " + str(res[1]))
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return res[0]
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def get_line_pos(string):
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"""
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Get new lines postion in a string
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:param string: a string
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"""
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ex = regex.compile("^", regex.MULTILINE)
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ite = ex.finditer(string)
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new_lines = []
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for match in ite:
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new_lines.append(match.start(0))
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return new_lines
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def find_line(begin_pos, end_pos, new_lines):
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"""
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Find the line number and the position in the line
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:param pos: the position to find the line
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:param new_lines: then new lines
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"""
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num_line = 0
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old_pos_line = 0
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for pos_line in new_lines:
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if pos_line > begin_pos:
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return num_line, begin_pos - old_pos_line + 1, end_pos - old_pos_line
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num_line += 1
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old_pos_line = pos_line
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if __name__ == '__main__':
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sys.exit(main())
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