Mercurial > hg
view mercurial/pure/charencode.py @ 51711:832a1aeb576f
pytype: only try the hacky way of finding PYTHON if not provided
This allows us to work in more environments, like when using pyenv. This
syntax is compatible with all POSIX shells.
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Tue, 23 Jul 2024 12:10:31 +0200 |
parents | b677bccf74b9 |
children | 43adbe03079b |
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# charencode.py - miscellaneous character encoding # # Copyright 2005-2009 Olivia Mackall <olivia@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import array from .. import pycompat def isasciistr(s): try: s.decode('ascii') return True except UnicodeDecodeError: return False def asciilower(s): """convert a string to lowercase if ASCII Raises UnicodeDecodeError if non-ASCII characters are found.""" s.decode('ascii') return s.lower() def asciiupper(s): """convert a string to uppercase if ASCII Raises UnicodeDecodeError if non-ASCII characters are found.""" s.decode('ascii') return s.upper() _jsonmap = [] _jsonmap.extend(b"\\u%04x" % x for x in range(32)) _jsonmap.extend(pycompat.bytechr(x) for x in range(32, 127)) _jsonmap.append(b'\\u007f') _jsonmap[0x09] = b'\\t' _jsonmap[0x0A] = b'\\n' _jsonmap[0x22] = b'\\"' _jsonmap[0x5C] = b'\\\\' _jsonmap[0x08] = b'\\b' _jsonmap[0x0C] = b'\\f' _jsonmap[0x0D] = b'\\r' _paranoidjsonmap = _jsonmap[:] _paranoidjsonmap[0x3C] = b'\\u003c' # '<' (e.g. escape "</script>") _paranoidjsonmap[0x3E] = b'\\u003e' # '>' _jsonmap.extend(pycompat.bytechr(x) for x in range(128, 256)) def jsonescapeu8fast(u8chars, paranoid): """Convert a UTF-8 byte string to JSON-escaped form (fast path) Raises ValueError if non-ASCII characters have to be escaped. """ if paranoid: jm = _paranoidjsonmap else: jm = _jsonmap try: return b''.join(jm[x] for x in bytearray(u8chars)) except IndexError: raise ValueError _utf8strict = r'surrogatepass' def jsonescapeu8fallback(u8chars, paranoid): """Convert a UTF-8 byte string to JSON-escaped form (slow path) Escapes all non-ASCII characters no matter if paranoid is False. """ if paranoid: jm = _paranoidjsonmap else: jm = _jsonmap # non-BMP char is represented as UTF-16 surrogate pair u16b = u8chars.decode('utf-8', _utf8strict).encode('utf-16', _utf8strict) u16codes = array.array('H', u16b) u16codes.pop(0) # drop BOM return b''.join(jm[x] if x < 128 else b'\\u%04x' % x for x in u16codes)