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# yarnstep.py -- Python code for making yarn IMPLEMENTS sections nicer
#
# This is meant to be imported, not used with yarn --shell-library.
#
# Copyright 2016 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import os
import cliapp
_next_match = 1
def get_next_match():
global _next_match
name = 'MATCH_{}'.format(_next_match)
_next_match += 1
return os.environ[name]
def get_next_match_as_int():
return int(get_next_match())
def get_next_match_as_datadir_path():
return datadir(get_next_match())
def datadir(relative):
return os.path.join(os.environ['DATADIR'], relative)
def srcdir(relative):
return os.path.join(os.environ['SRCDIR'], relative)
def iter_over_files(root):
for dirname, _, filenames in os.walk(root):
for filename in filenames:
yield os.path.join(dirname, filename)
def cat(filename):
with open(filename) as f:
return f.read()
def write_file(filename, data):
dirname = os.path.dirname(filename)
if not os.path.exists(dirname):
os.makedirs(dirname)
with open(filename, 'w') as f:
f.write(data)
def unescape_backslashes(s):
result = ''
while s:
if s.startswith('\\') and len(s) > 1:
result += unescape_char(s[1])
s = s[2:]
else:
result += s[0]
s = s[1:]
return result
def unescape_char(c):
table = {
'n': '\n',
}
return table.get(c, c)
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