Mercurial > hg
view mercurial/pure/charencode.py @ 50072:a99dcf53eebd
dirstate-guard: remove the feature
The dirstate guard duplicated some of the logic already implemented in the
transaction (and now the changing_* context).
However the feature was incomplete, for example, living only in memory meant we
could not recover from the hardest crash. In addition this duplicated with the
transaction logic meant things could go out of sync or step on each other.
Removing the feature now that we no longer needs it seems the safest.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Thu, 16 Feb 2023 00:33:15 +0100 |
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)