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# -*- coding: utf-8 -*-
# The MIT License (MIT)
# Copyright (c) 2014-2022 Matias Bordese
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
"""Useful constants and regexes used by the package."""
from __future__ import unicode_literals
import re
RE_SOURCE_FILENAME = re.compile(
r'^--- (?P<filename>[^\t\n]+)(?:\t(?P<timestamp>[^\n]+))?')
RE_TARGET_FILENAME = re.compile(
r'^\+\+\+ (?P<filename>[^\t\n]+)(?:\t(?P<timestamp>[^\n]+))?')
# check diff git line for git renamed files support
RE_DIFF_GIT_HEADER = re.compile(
r'^diff --git (?P<source>a/[^\t\n]+) (?P<target>b/[^\t\n]+)')
RE_DIFF_GIT_HEADER_URI_LIKE = re.compile(
r'^diff --git (?P<source>.*://[^\t\n]+) (?P<target>.*://[^\t\n]+)')
RE_DIFF_GIT_HEADER_NO_PREFIX = re.compile(
r'^diff --git (?P<source>[^\t\n]+) (?P<target>[^\t\n]+)')
# check diff git new file marker `deleted file mode 100644`
RE_DIFF_GIT_DELETED_FILE = re.compile(r'^deleted file mode \d+$')
# check diff git new file marker `new file mode 100644`
RE_DIFF_GIT_NEW_FILE = re.compile(r'^new file mode \d+$')
# @@ (source offset, length) (target offset, length) @@ (section header)
RE_HUNK_HEADER = re.compile(
r"^@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))?\ @@[ ]?(.*)")
# kept line (context)
# \n empty line (treat like context)
# + added line
# - deleted line
# \ No newline case
RE_HUNK_BODY_LINE = re.compile(
r'^(?P<line_type>[- \+\\])(?P<value>.*)', re.DOTALL)
RE_HUNK_EMPTY_BODY_LINE = re.compile(
r'^(?P<line_type>[- \+\\]?)(?P<value>[\r\n]{1,2})', re.DOTALL)
RE_NO_NEWLINE_MARKER = re.compile(r'^\\ No newline at end of file')
RE_BINARY_DIFF = re.compile(
r'^Binary files? '
r'(?P<source_filename>[^\t]+?)(?:\t(?P<source_timestamp>[\s0-9:\+-]+))?'
r'(?: and (?P<target_filename>[^\t]+?)(?:\t(?P<target_timestamp>[\s0-9:\+-]+))?)? (differ|has changed)')
DEFAULT_ENCODING = 'UTF-8'
DEV_NULL = '/dev/null'
LINE_TYPE_ADDED = '+'
LINE_TYPE_REMOVED = '-'
LINE_TYPE_CONTEXT = ' '
LINE_TYPE_EMPTY = ''
LINE_TYPE_NO_NEWLINE = '\\'
LINE_VALUE_NO_NEWLINE = ' No newline at end of file'
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