Lao Tzu
99 lines
3.0 KiB
Python
99 lines
3.0 KiB
Python
#
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# Copyright (C) 2017-2020 Dimitar Toshkov Zhekov <dimitar.zhekov@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation; either version 2 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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import sys
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# -- Various --
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UNICODE_MAX = 1114111 # 0x10FFFF
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UNICODE_BMP_MAX = 65535 # 0xFFFF
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def parse_dec(name, s, min_value=0, max_value=UNICODE_MAX):
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try:
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value = int(s)
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except ValueError:
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raise Exception('invalid %s format' % name)
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if min_value is not None and value < min_value:
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raise Exception('%s must be >= %d' % (name, min_value))
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if max_value is not None and value > max_value:
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raise Exception('%s must be <= %d' % (name, max_value))
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return value
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def parse_hex(name, s, min_value=0, max_value=UNICODE_MAX):
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try:
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value = int(s, 16)
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except ValueError:
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raise Exception('invalid %s format' % name)
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if min_value is not None and value < min_value:
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raise Exception('%s must be >= %X' % (name, min_value))
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if max_value is not None and value > max_value:
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raise Exception('%s must be <= %X' % (name, max_value))
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return value
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def quote(bstr):
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return b'"%s"' % bstr.replace(b'"', b'""')
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def unquote(bstr, name=None):
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if len(bstr) >= 2 and bstr.startswith(b'"') and bstr.endswith(b'"'):
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bstr = bstr[1 : len(bstr) - 1].replace(b'""', b'"')
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elif name is not None:
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raise Exception(name + ' must be quoted')
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return bstr
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def message(prefix, severity, text):
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sys.stderr.write('%s%s%s\n' % (prefix, severity + ': ' if severity else '', text))
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def warning(prefix, text):
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message(prefix, 'warning', text)
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def split_words(name, value, count):
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words = value.split(None, count)
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if len(words) != count:
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raise Exception('%s must contain %d values' % (name, count))
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return words
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GPL2PLUS_LICENSE = ('' +
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'This program is free software; you can redistribute it and/or modify it\n' +
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'under the terms of the GNU General Public License as published by the Free\n' +
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'Software Foundation; either version 2 of the License, or (at your option)\n' +
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'any later version.\n' +
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'\n' +
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'This program is distributed in the hope that it will be useful, but\n' +
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'WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\n' +
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'or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License\n' +
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'for more details.\n' +
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'\n' +
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'You should have received a copy of the GNU General Public License along\n' +
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'with this program; if not, write to the Free Software Foundation, Inc.,\n' +
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'51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\n')
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