author | Joerg Sonnenberger <joerg@bec.de> |
Tue, 06 Oct 2020 01:51:56 +0200 | |
changeset 45729 | 44d84b726c8a |
parent 45681 | a736ab681b78 |
child 45942 | 89a2afe31e82 |
permissions | -rw-r--r-- |
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# encoding.py - character transcoding support for Mercurial |
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# |
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# Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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from __future__ import absolute_import, print_function |
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import locale |
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import os |
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import unicodedata |
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from .pycompat import getattr |
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from . import ( |
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error, |
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policy, |
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pycompat, |
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) |
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from .pure import charencode as charencodepure |
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if pycompat.TYPE_CHECKING: |
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from typing import ( |
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Any, |
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Callable, |
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List, |
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Text, |
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Type, |
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TypeVar, |
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Union, |
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) |
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# keep pyflakes happy |
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for t in (Any, Callable, List, Text, Type, Union): |
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assert t |
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_Tlocalstr = TypeVar('_Tlocalstr', bound='localstr') |
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charencode = policy.importmod('charencode') |
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isasciistr = charencode.isasciistr |
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asciilower = charencode.asciilower |
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asciiupper = charencode.asciiupper |
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_jsonescapeu8fast = charencode.jsonescapeu8fast |
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_sysstr = pycompat.sysstr |
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if pycompat.ispy3: |
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unichr = chr |
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# These unicode characters are ignored by HFS+ (Apple Technote 1150, |
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# "Unicode Subtleties"), so we need to ignore them in some places for |
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# sanity. |
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_ignore = [ |
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unichr(int(x, 16)).encode("utf-8") |
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for x in b"200c 200d 200e 200f 202a 202b 202c 202d 202e " |
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b"206a 206b 206c 206d 206e 206f feff".split() |
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] |
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# verify the next function will work |
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assert all(i.startswith((b"\xe2", b"\xef")) for i in _ignore) |
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def hfsignoreclean(s): |
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# type: (bytes) -> bytes |
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"""Remove codepoints ignored by HFS+ from s. |
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>>> hfsignoreclean(u'.h\u200cg'.encode('utf-8')) |
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'.hg' |
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>>> hfsignoreclean(u'.h\ufeffg'.encode('utf-8')) |
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'.hg' |
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""" |
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if b"\xe2" in s or b"\xef" in s: |
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for c in _ignore: |
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s = s.replace(c, b'') |
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return s |
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# encoding.environ is provided read-only, which may not be used to modify |
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# the process environment |
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_nativeenviron = not pycompat.ispy3 or os.supports_bytes_environ |
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if not pycompat.ispy3: |
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environ = os.environ # re-exports |
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elif _nativeenviron: |
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environ = os.environb # re-exports |
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else: |
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# preferred encoding isn't known yet; use utf-8 to avoid unicode error |
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# and recreate it once encoding is settled |
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environ = { |
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k.encode('utf-8'): v.encode('utf-8') |
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for k, v in os.environ.items() # re-exports |
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} |
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_encodingrewrites = { |
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b'646': b'ascii', |
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b'ANSI_X3.4-1968': b'ascii', |
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} |
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# cp65001 is a Windows variant of utf-8, which isn't supported on Python 2. |
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# No idea if it should be rewritten to the canonical name 'utf-8' on Python 3. |
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# https://bugs.python.org/issue13216 |
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if pycompat.iswindows and not pycompat.ispy3: |
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_encodingrewrites[b'cp65001'] = b'utf-8' |
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try: |
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encoding = environ.get(b"HGENCODING") |
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if not encoding: |
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encoding = locale.getpreferredencoding().encode('ascii') or b'ascii' |
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encoding = _encodingrewrites.get(encoding, encoding) |
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except locale.Error: |
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encoding = b'ascii' |
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encodingmode = environ.get(b"HGENCODINGMODE", b"strict") |
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fallbackencoding = b'ISO-8859-1' |
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class localstr(bytes): |
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'''This class allows strings that are unmodified to be |
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round-tripped to the local encoding and back''' |
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|
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def __new__(cls, u, l): |
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s = bytes.__new__(cls, l) |
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s._utf8 = u |
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return s |
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|
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if pycompat.TYPE_CHECKING: |
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# pseudo implementation to help pytype see localstr() constructor |
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def __init__(self, u, l): |
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# type: (bytes, bytes) -> None |
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super(localstr, self).__init__(l) |
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self._utf8 = u |
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def __hash__(self): |
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return hash(self._utf8) # avoid collisions in local string space |
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|
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class safelocalstr(bytes): |
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"""Tagged string denoting it was previously an internal UTF-8 string, |
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and can be converted back to UTF-8 losslessly |
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|
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>>> assert safelocalstr(b'\\xc3') == b'\\xc3' |
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>>> assert b'\\xc3' == safelocalstr(b'\\xc3') |
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>>> assert b'\\xc3' in {safelocalstr(b'\\xc3'): 0} |
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>>> assert safelocalstr(b'\\xc3') in {b'\\xc3': 0} |
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""" |
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144 |
|
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145 |
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146 |
def tolocal(s): |
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# type: (bytes) -> bytes |
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148 |
""" |
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Convert a string from internal UTF-8 to local encoding |
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150 |
|
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151 |
All internal strings should be UTF-8 but some repos before the |
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implementation of locale support may contain latin1 or possibly |
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153 |
other character sets. We attempt to decode everything strictly |
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154 |
using UTF-8, then Latin-1, and failing that, we use UTF-8 and |
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155 |
replace unknown characters. |
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156 |
|
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157 |
The localstr class is used to cache the known UTF-8 encoding of |
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158 |
strings next to their local representation to allow lossless |
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159 |
round-trip conversion back to UTF-8. |
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160 |
|
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161 |
>>> u = b'foo: \\xc3\\xa4' # utf-8 |
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162 |
>>> l = tolocal(u) |
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>>> l |
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'foo: ?' |
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>>> fromlocal(l) |
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'foo: \\xc3\\xa4' |
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167 |
>>> u2 = b'foo: \\xc3\\xa1' |
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168 |
>>> d = { l: 1, tolocal(u2): 2 } |
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>>> len(d) # no collision |
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2 |
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171 |
>>> b'foo: ?' in d |
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172 |
False |
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173 |
>>> l1 = b'foo: \\xe4' # historical latin1 fallback |
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174 |
>>> l = tolocal(l1) |
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175 |
>>> l |
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176 |
'foo: ?' |
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177 |
>>> fromlocal(l) # magically in utf-8 |
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178 |
'foo: \\xc3\\xa4' |
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179 |
""" |
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180 |
|
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181 |
if isasciistr(s): |
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182 |
return s |
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183 |
|
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184 |
try: |
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185 |
try: |
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186 |
# make sure string is actually stored in UTF-8 |
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187 |
u = s.decode('UTF-8') |
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188 |
if encoding == b'UTF-8': |
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189 |
# fast path |
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190 |
return s |
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191 |
r = u.encode(_sysstr(encoding), "replace") |
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192 |
if u == r.decode(_sysstr(encoding)): |
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# r is a safe, non-lossy encoding of s |
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return safelocalstr(r) |
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195 |
return localstr(s, r) |
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196 |
except UnicodeDecodeError: |
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197 |
# we should only get here if we're looking at an ancient changeset |
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198 |
try: |
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u = s.decode(_sysstr(fallbackencoding)) |
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r = u.encode(_sysstr(encoding), "replace") |
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if u == r.decode(_sysstr(encoding)): |
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# r is a safe, non-lossy encoding of s |
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return safelocalstr(r) |
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return localstr(u.encode('UTF-8'), r) |
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except UnicodeDecodeError: |
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u = s.decode("utf-8", "replace") # last ditch |
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# can't round-trip |
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return u.encode(_sysstr(encoding), "replace") |
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except LookupError as k: |
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raise error.Abort( |
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pycompat.bytestr(k), hint=b"please check your locale settings" |
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212 |
) |
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|
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|
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215 |
def fromlocal(s): |
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216 |
# type: (bytes) -> bytes |
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217 |
""" |
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Convert a string from the local character encoding to UTF-8 |
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219 |
|
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We attempt to decode strings using the encoding mode set by |
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HGENCODINGMODE, which defaults to 'strict'. In this mode, unknown |
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characters will cause an error message. Other modes include |
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'replace', which replaces unknown characters with a special |
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Unicode character, and 'ignore', which drops the character. |
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""" |
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226 |
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# can we do a lossless round-trip? |
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if isinstance(s, localstr): |
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return s._utf8 |
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if isasciistr(s): |
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return s |
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232 |
|
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try: |
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u = s.decode(_sysstr(encoding), _sysstr(encodingmode)) |
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return u.encode("utf-8") |
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except UnicodeDecodeError as inst: |
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sub = s[max(0, inst.start - 10) : inst.start + 10] |
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raise error.Abort( |
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b"decoding near '%s': %s!" % (sub, pycompat.bytestr(inst)) |
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240 |
) |
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except LookupError as k: |
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raise error.Abort(k, hint=b"please check your locale settings") |
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243 |
|
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244 |
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def unitolocal(u): |
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# type: (Text) -> bytes |
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"""Convert a unicode string to a byte string of local encoding""" |
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return tolocal(u.encode('utf-8')) |
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249 |
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250 |
|
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251 |
def unifromlocal(s): |
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252 |
# type: (bytes) -> Text |
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253 |
"""Convert a byte string of local encoding to a unicode string""" |
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254 |
return fromlocal(s).decode('utf-8') |
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255 |
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256 |
|
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def unimethod(bytesfunc): |
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# type: (Callable[[Any], bytes]) -> Callable[[Any], Text] |
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259 |
"""Create a proxy method that forwards __unicode__() and __str__() of |
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260 |
Python 3 to __bytes__()""" |
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261 |
|
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262 |
def unifunc(obj): |
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263 |
return unifromlocal(bytesfunc(obj)) |
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264 |
|
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265 |
return unifunc |
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266 |
|
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267 |
|
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268 |
# converter functions between native str and byte string. use these if the |
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269 |
# character encoding is not aware (e.g. exception message) or is known to |
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270 |
# be locale dependent (e.g. date formatting.) |
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271 |
if pycompat.ispy3: |
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272 |
strtolocal = unitolocal |
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273 |
strfromlocal = unifromlocal |
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274 |
strmethod = unimethod |
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275 |
else: |
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276 |
|
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277 |
def strtolocal(s): |
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278 |
# type: (str) -> bytes |
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return s # pytype: disable=bad-return-type |
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280 |
|
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281 |
def strfromlocal(s): |
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282 |
# type: (bytes) -> str |
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283 |
return s # pytype: disable=bad-return-type |
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284 |
|
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strmethod = pycompat.identity |
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286 |
|
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287 |
if not _nativeenviron: |
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288 |
# now encoding and helper functions are available, recreate the environ |
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289 |
# dict to be exported to other modules |
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290 |
environ = { |
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291 |
tolocal(k.encode('utf-8')): tolocal(v.encode('utf-8')) |
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for k, v in os.environ.items() # re-exports |
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293 |
} |
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294 |
|
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295 |
if pycompat.ispy3: |
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296 |
# os.getcwd() on Python 3 returns string, but it has os.getcwdb() which |
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297 |
# returns bytes. |
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298 |
if pycompat.iswindows: |
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299 |
# Python 3 on Windows issues a DeprecationWarning about using the bytes |
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300 |
# API when os.getcwdb() is called. |
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301 |
getcwd = lambda: strtolocal(os.getcwd()) # re-exports |
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302 |
else: |
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getcwd = os.getcwdb # re-exports |
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304 |
else: |
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305 |
getcwd = os.getcwd # re-exports |
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306 |
|
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307 |
# How to treat ambiguous-width characters. Set to 'wide' to treat as wide. |
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308 |
_wide = _sysstr( |
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environ.get(b"HGENCODINGAMBIGUOUS", b"narrow") == b"wide" |
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310 |
and b"WFA" |
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311 |
or b"WF" |
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312 |
) |
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313 |
|
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314 |
|
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def colwidth(s): |
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# type: (bytes) -> int |
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317 |
"""Find the column width of a string for display in the local encoding""" |
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return ucolwidth(s.decode(_sysstr(encoding), 'replace')) |
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|
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|
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321 |
def ucolwidth(d): |
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# type: (Text) -> int |
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323 |
"""Find the column width of a Unicode string for display""" |
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eaw = getattr(unicodedata, 'east_asian_width', None) |
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if eaw is not None: |
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return sum([eaw(c) in _wide and 2 or 1 for c in d]) |
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return len(d) |
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|
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329 |
|
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|
330 |
def getcols(s, start, c): |
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|
331 |
# type: (bytes, int, int) -> bytes |
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|
332 |
'''Use colwidth to find a c-column substring of s starting at byte |
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|
333 |
index start''' |
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global: use pycompat.xrange()
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|
334 |
for x in pycompat.xrange(start + c, len(s)): |
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|
335 |
t = s[start:x] |
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|
336 |
if colwidth(t) == c: |
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|
337 |
return t |
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encoding: make getcols() raise exception explicitly
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|
338 |
raise ValueError('substring not found') |
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|
339 |
|
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
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changeset
|
340 |
|
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
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parents:
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diff
changeset
|
341 |
def trim(s, width, ellipsis=b'', leftside=False): |
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parents:
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|
342 |
# type: (bytes, int, bytes, bool) -> bytes |
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encoding: add 'trim' to trim multi-byte characters at most specified columns
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|
343 |
"""Trim string 's' to at most 'width' columns (including 'ellipsis'). |
d24969ee272f
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|
344 |
|
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parents:
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diff
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|
345 |
If 'leftside' is True, left side of string 's' is trimmed. |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
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parents:
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diff
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|
346 |
'ellipsis' is always placed at trimmed side. |
b515c3a63e96
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|
347 |
|
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414a3513c2bd
doctest: do not embed non-ascii characters in docstring
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parents:
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diff
changeset
|
348 |
>>> from .node import bin |
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doctest: use print_function and convert bytes to unicode where needed
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parents:
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diff
changeset
|
349 |
>>> def bprint(s): |
a8994d08e4a2
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parents:
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diff
changeset
|
350 |
... print(pycompat.sysstr(s)) |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
351 |
>>> ellipsis = b'+++' |
27355
b479fc425a81
encoding: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents:
26963
diff
changeset
|
352 |
>>> from . import encoding |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
353 |
>>> encoding.encoding = b'utf-8' |
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
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parents:
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diff
changeset
|
354 |
>>> t = b'1234567890' |
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parents:
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diff
changeset
|
355 |
>>> bprint(trim(t, 12, ellipsis=ellipsis)) |
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encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
356 |
1234567890 |
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parents:
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diff
changeset
|
357 |
>>> bprint(trim(t, 10, ellipsis=ellipsis)) |
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encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
358 |
1234567890 |
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parents:
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diff
changeset
|
359 |
>>> bprint(trim(t, 8, ellipsis=ellipsis)) |
21856
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encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
360 |
12345+++ |
34137
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doctest: use print_function and convert bytes to unicode where needed
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parents:
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diff
changeset
|
361 |
>>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
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parents:
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diff
changeset
|
362 |
+++67890 |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
363 |
>>> bprint(trim(t, 8)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
364 |
12345678 |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
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parents:
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diff
changeset
|
365 |
>>> bprint(trim(t, 8, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
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parents:
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diff
changeset
|
366 |
34567890 |
34137
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doctest: use print_function and convert bytes to unicode where needed
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parents:
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diff
changeset
|
367 |
>>> bprint(trim(t, 3, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
368 |
+++ |
34137
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doctest: use print_function and convert bytes to unicode where needed
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parents:
34136
diff
changeset
|
369 |
>>> bprint(trim(t, 1, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
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parents:
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diff
changeset
|
370 |
+ |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
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diff
changeset
|
371 |
>>> u = u'\u3042\u3044\u3046\u3048\u304a' # 2 x 5 = 10 columns |
34135
e9e225f16932
doctest: pass encoding name as system string
Yuya Nishihara <yuya@tcha.org>
parents:
34131
diff
changeset
|
372 |
>>> t = u.encode(pycompat.sysstr(encoding.encoding)) |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
373 |
>>> bprint(trim(t, 12, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
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diff
changeset
|
374 |
\xe3\x81\x82\xe3\x81\x84\xe3\x81\x86\xe3\x81\x88\xe3\x81\x8a |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
375 |
>>> bprint(trim(t, 10, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
376 |
\xe3\x81\x82\xe3\x81\x84\xe3\x81\x86\xe3\x81\x88\xe3\x81\x8a |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
377 |
>>> bprint(trim(t, 8, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
378 |
\xe3\x81\x82\xe3\x81\x84+++ |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
379 |
>>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
380 |
+++\xe3\x81\x88\xe3\x81\x8a |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
381 |
>>> bprint(trim(t, 5)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
382 |
\xe3\x81\x82\xe3\x81\x84 |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
383 |
>>> bprint(trim(t, 5, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
384 |
\xe3\x81\x88\xe3\x81\x8a |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
385 |
>>> bprint(trim(t, 4, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
386 |
+++ |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
387 |
>>> bprint(trim(t, 4, ellipsis=ellipsis, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
388 |
+++ |
34136
414a3513c2bd
doctest: do not embed non-ascii characters in docstring
Yuya Nishihara <yuya@tcha.org>
parents:
34135
diff
changeset
|
389 |
>>> t = bin(b'112233445566778899aa') # invalid byte sequence |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
390 |
>>> bprint(trim(t, 12, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
391 |
\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
392 |
>>> bprint(trim(t, 10, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
393 |
\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
394 |
>>> bprint(trim(t, 8, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
395 |
\x11\x22\x33\x44\x55+++ |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
396 |
>>> bprint(trim(t, 8, ellipsis=ellipsis, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
397 |
+++\x66\x77\x88\x99\xaa |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
398 |
>>> bprint(trim(t, 8)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
399 |
\x11\x22\x33\x44\x55\x66\x77\x88 |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
400 |
>>> bprint(trim(t, 8, leftside=True)) |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
401 |
\x33\x44\x55\x66\x77\x88\x99\xaa |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
402 |
>>> bprint(trim(t, 3, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
403 |
+++ |
34137
a8994d08e4a2
doctest: use print_function and convert bytes to unicode where needed
Yuya Nishihara <yuya@tcha.org>
parents:
34136
diff
changeset
|
404 |
>>> bprint(trim(t, 1, ellipsis=ellipsis)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
405 |
+ |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
406 |
""" |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
407 |
try: |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
408 |
u = s.decode(_sysstr(encoding)) |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
409 |
except UnicodeDecodeError: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
410 |
if len(s) <= width: # trimming is not needed |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
411 |
return s |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
412 |
width -= len(ellipsis) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
413 |
if width <= 0: # no enough room even for ellipsis |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
414 |
return ellipsis[: width + len(ellipsis)] |
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
415 |
if leftside: |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
416 |
return ellipsis + s[-width:] |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
417 |
return s[:width] + ellipsis |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
418 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
419 |
if ucolwidth(u) <= width: # trimming is not needed |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
420 |
return s |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
421 |
|
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
422 |
width -= len(ellipsis) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
423 |
if width <= 0: # no enough room even for ellipsis |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
424 |
return ellipsis[: width + len(ellipsis)] |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
425 |
|
21861
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
426 |
if leftside: |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
427 |
uslice = lambda i: u[i:] |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
428 |
concat = lambda s: ellipsis + s |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
429 |
else: |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
430 |
uslice = lambda i: u[:-i] |
b515c3a63e96
encoding: add 'leftside' argument into 'trim' to switch trimming side
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
21856
diff
changeset
|
431 |
concat = lambda s: s + ellipsis |
38783
e7aa113b14f7
global: use pycompat.xrange()
Gregory Szorc <gregory.szorc@gmail.com>
parents:
38739
diff
changeset
|
432 |
for i in pycompat.xrange(1, len(u)): |
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
433 |
usub = uslice(i) |
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
434 |
if ucolwidth(usub) <= width: |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
435 |
return concat(usub.encode(_sysstr(encoding))) |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
436 |
return ellipsis # no enough room for multi-column characters |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
437 |
|
21856
d24969ee272f
encoding: add 'trim' to trim multi-byte characters at most specified columns
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
18378
diff
changeset
|
438 |
|
14069
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
439 |
def lower(s): |
43496
2ade00f3b03b
encoding: add comment-based type hints for pytype
Augie Fackler <augie@google.com>
parents:
43469
diff
changeset
|
440 |
# type: (bytes) -> bytes |
43787
be8552f25cab
cleanup: fix docstring formatting
Matt Harbison <matt_harbison@yahoo.com>
parents:
43773
diff
changeset
|
441 |
"""best-effort encoding-aware case-folding of local string s""" |
14069
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
442 |
try: |
22779
d9585dda63c3
encoding.lower: use fast ASCII lower
Siddharth Agarwal <sid0@fb.com>
parents:
22778
diff
changeset
|
443 |
return asciilower(s) |
17235
3745ae495ce5
encoding: use s.decode to trigger UnicodeDecodeError
Martin Geisler <mg@aragost.com>
parents:
16493
diff
changeset
|
444 |
except UnicodeDecodeError: |
16387
c481761033bd
encoding: add fast-path for ASCII lowercase
Matt Mackall <mpm@selenic.com>
parents:
16274
diff
changeset
|
445 |
pass |
c481761033bd
encoding: add fast-path for ASCII lowercase
Matt Mackall <mpm@selenic.com>
parents:
16274
diff
changeset
|
446 |
try: |
14069
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
447 |
if isinstance(s, localstr): |
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
448 |
u = s._utf8.decode("utf-8") |
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
449 |
else: |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
450 |
u = s.decode(_sysstr(encoding), _sysstr(encodingmode)) |
14069
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
451 |
|
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
452 |
lu = u.lower() |
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
453 |
if u == lu: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
454 |
return s # preserve localstring |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
455 |
return lu.encode(_sysstr(encoding)) |
14069
e38846a79a23
encoding: add an encoding-aware lower function
Matt Mackall <mpm@selenic.com>
parents:
13940
diff
changeset
|
456 |
except UnicodeError: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
457 |
return s.lower() # we don't know how to fold this except in ASCII |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
24608
diff
changeset
|
458 |
except LookupError as k: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
459 |
raise error.Abort(k, hint=b"please check your locale settings") |
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
460 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
461 |
|
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
462 |
def upper(s): |
43496
2ade00f3b03b
encoding: add comment-based type hints for pytype
Augie Fackler <augie@google.com>
parents:
43469
diff
changeset
|
463 |
# type: (bytes) -> bytes |
43787
be8552f25cab
cleanup: fix docstring formatting
Matt Harbison <matt_harbison@yahoo.com>
parents:
43773
diff
changeset
|
464 |
"""best-effort encoding-aware case-folding of local string s""" |
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
465 |
try: |
24578
ac08de78de7f
encoding: use parsers.asciiupper when available
Siddharth Agarwal <sid0@fb.com>
parents:
23596
diff
changeset
|
466 |
return asciiupper(s) |
17236
9fb8312dbdbd
encoding: add fast-path for ASCII uppercase.
Martin Geisler <mg@aragost.com>
parents:
17235
diff
changeset
|
467 |
except UnicodeDecodeError: |
24597
b4258d5a1600
encoding.upper: factor out fallback code
Siddharth Agarwal <sid0@fb.com>
parents:
24593
diff
changeset
|
468 |
return upperfallback(s) |
b4258d5a1600
encoding.upper: factor out fallback code
Siddharth Agarwal <sid0@fb.com>
parents:
24593
diff
changeset
|
469 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
470 |
|
24597
b4258d5a1600
encoding.upper: factor out fallback code
Siddharth Agarwal <sid0@fb.com>
parents:
24593
diff
changeset
|
471 |
def upperfallback(s): |
43496
2ade00f3b03b
encoding: add comment-based type hints for pytype
Augie Fackler <augie@google.com>
parents:
43469
diff
changeset
|
472 |
# type: (Any) -> Any |
17236
9fb8312dbdbd
encoding: add fast-path for ASCII uppercase.
Martin Geisler <mg@aragost.com>
parents:
17235
diff
changeset
|
473 |
try: |
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
474 |
if isinstance(s, localstr): |
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
475 |
u = s._utf8.decode("utf-8") |
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
476 |
else: |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
477 |
u = s.decode(_sysstr(encoding), _sysstr(encodingmode)) |
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
478 |
|
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
479 |
uu = u.upper() |
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
480 |
if u == uu: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
481 |
return s # preserve localstring |
30033
02dbfaa6df0b
py3: convert encoding name and mode to str
Yuya Nishihara <yuya@tcha.org>
parents:
30030
diff
changeset
|
482 |
return uu.encode(_sysstr(encoding)) |
15672
2ebe3d0ce91d
i18n: use encoding.lower/upper for encoding aware case folding
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
15143
diff
changeset
|
483 |
except UnicodeError: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
484 |
return s.upper() # we don't know how to fold this except in ASCII |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
24608
diff
changeset
|
485 |
except LookupError as k: |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
486 |
raise error.Abort(k, hint=b"please check your locale settings") |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
487 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
488 |
|
24593
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
489 |
class normcasespecs(object): |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
490 |
'''what a platform's normcase does to ASCII strings |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
491 |
|
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
492 |
This is specified per platform, and should be consistent with what normcase |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
493 |
on that platform actually does. |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
494 |
|
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
495 |
lower: normcase lowercases ASCII strings |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
496 |
upper: normcase uppercases ASCII strings |
24608
1c533e23ce95
util.h: define an enum for normcase specs
Siddharth Agarwal <sid0@fb.com>
parents:
24597
diff
changeset
|
497 |
other: the fallback function should always be called |
1c533e23ce95
util.h: define an enum for normcase specs
Siddharth Agarwal <sid0@fb.com>
parents:
24597
diff
changeset
|
498 |
|
1c533e23ce95
util.h: define an enum for normcase specs
Siddharth Agarwal <sid0@fb.com>
parents:
24597
diff
changeset
|
499 |
This should be kept in sync with normcase_spec in util.h.''' |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
500 |
|
24593
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
501 |
lower = -1 |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
502 |
upper = 1 |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
503 |
other = 0 |
f473a1fe5c7c
encoding: define an enum that specifies what normcase does to ASCII strings
Siddharth Agarwal <sid0@fb.com>
parents:
24578
diff
changeset
|
504 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
505 |
|
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
506 |
def jsonescape(s, paranoid=False): |
43496
2ade00f3b03b
encoding: add comment-based type hints for pytype
Augie Fackler <augie@google.com>
parents:
43469
diff
changeset
|
507 |
# type: (Any, Any) -> Any |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
508 |
'''returns a string suitable for JSON |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
509 |
|
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
510 |
JSON is problematic for us because it doesn't support non-Unicode |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
511 |
bytes. To deal with this, we take the following approach: |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
512 |
|
37947
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
513 |
- localstr/safelocalstr objects are converted back to UTF-8 |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
514 |
- valid UTF-8/ASCII strings are passed as-is |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
515 |
- other strings are converted to UTF-8b surrogate encoding |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
516 |
- apply JSON-specified string escaping |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
517 |
|
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
518 |
(escapes are doubled in these tests) |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
519 |
|
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
520 |
>>> jsonescape(b'this is a test') |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
521 |
'this is a test' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
522 |
>>> jsonescape(b'escape characters: \\0 \\x0b \\x7f') |
27881
ffa599f3f503
encoding: escape U+007F (DEL) character in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
27699
diff
changeset
|
523 |
'escape characters: \\\\u0000 \\\\u000b \\\\u007f' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
524 |
>>> jsonescape(b'escape characters: \\b \\t \\n \\f \\r \\" \\\\') |
33925
2c37f9dabc32
encoding: add fast path of jsonescape() (issue5533)
Yuya Nishihara <yuya@tcha.org>
parents:
33924
diff
changeset
|
525 |
'escape characters: \\\\b \\\\t \\\\n \\\\f \\\\r \\\\" \\\\\\\\' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
526 |
>>> jsonescape(b'a weird byte: \\xdd') |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
527 |
'a weird byte: \\xed\\xb3\\x9d' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
528 |
>>> jsonescape(b'utf-8: caf\\xc3\\xa9') |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
529 |
'utf-8: caf\\xc3\\xa9' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
530 |
>>> jsonescape(b'') |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
531 |
'' |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
532 |
|
28069
b2d24c2898f9
encoding: backport paranoid escaping from templatefilters.jsonescape()
Yuya Nishihara <yuya@tcha.org>
parents:
28068
diff
changeset
|
533 |
If paranoid, non-ascii and common troublesome characters are also escaped. |
b2d24c2898f9
encoding: backport paranoid escaping from templatefilters.jsonescape()
Yuya Nishihara <yuya@tcha.org>
parents:
28068
diff
changeset
|
534 |
This is suitable for web output. |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
535 |
|
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
536 |
>>> s = b'escape characters: \\0 \\x0b \\x7f' |
33925
2c37f9dabc32
encoding: add fast path of jsonescape() (issue5533)
Yuya Nishihara <yuya@tcha.org>
parents:
33924
diff
changeset
|
537 |
>>> assert jsonescape(s) == jsonescape(s, paranoid=True) |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
538 |
>>> s = b'escape characters: \\b \\t \\n \\f \\r \\" \\\\' |
33925
2c37f9dabc32
encoding: add fast path of jsonescape() (issue5533)
Yuya Nishihara <yuya@tcha.org>
parents:
33924
diff
changeset
|
539 |
>>> assert jsonescape(s) == jsonescape(s, paranoid=True) |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
540 |
>>> jsonescape(b'escape boundary: \\x7e \\x7f \\xc2\\x80', paranoid=True) |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
541 |
'escape boundary: ~ \\\\u007f \\\\u0080' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
542 |
>>> jsonescape(b'a weird byte: \\xdd', paranoid=True) |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
543 |
'a weird byte: \\\\udcdd' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
544 |
>>> jsonescape(b'utf-8: caf\\xc3\\xa9', paranoid=True) |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
545 |
'utf-8: caf\\\\u00e9' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
546 |
>>> jsonescape(b'non-BMP: \\xf0\\x9d\\x84\\x9e', paranoid=True) |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
547 |
'non-BMP: \\\\ud834\\\\udd1e' |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
548 |
>>> jsonescape(b'<foo@example.org>', paranoid=True) |
28069
b2d24c2898f9
encoding: backport paranoid escaping from templatefilters.jsonescape()
Yuya Nishihara <yuya@tcha.org>
parents:
28068
diff
changeset
|
549 |
'\\\\u003cfoo@example.org\\\\u003e' |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
550 |
''' |
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
551 |
|
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
552 |
u8chars = toutf8b(s) |
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
553 |
try: |
33924
b9101467d88b
encoding: extract stub for fast JSON escape
Yuya Nishihara <yuya@tcha.org>
parents:
33852
diff
changeset
|
554 |
return _jsonescapeu8fast(u8chars, paranoid) |
b9101467d88b
encoding: extract stub for fast JSON escape
Yuya Nishihara <yuya@tcha.org>
parents:
33852
diff
changeset
|
555 |
except ValueError: |
28068
9ece901f7a19
encoding: add option to escape non-ascii characters in JSON
Yuya Nishihara <yuya@tcha.org>
parents:
28067
diff
changeset
|
556 |
pass |
33924
b9101467d88b
encoding: extract stub for fast JSON escape
Yuya Nishihara <yuya@tcha.org>
parents:
33852
diff
changeset
|
557 |
return charencodepure.jsonescapeu8fallback(u8chars, paranoid) |
22426
f6b533e64ed6
encoding: add json escaping filter
Matt Mackall <mpm@selenic.com>
parents:
22425
diff
changeset
|
558 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
559 |
|
34218
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
560 |
# We need to decode/encode U+DCxx codes transparently since invalid UTF-8 |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
561 |
# bytes are mapped to that range. |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
562 |
if pycompat.ispy3: |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
563 |
_utf8strict = r'surrogatepass' |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
564 |
else: |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
565 |
_utf8strict = r'strict' |
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
566 |
|
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
567 |
_utf8len = [0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 4] |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
568 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
569 |
|
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
570 |
def getutf8char(s, pos): |
43682
83a349aaeba3
typing: constrain argument/return types of encoding.toutf8b()
Yuya Nishihara <yuya@tcha.org>
parents:
43681
diff
changeset
|
571 |
# type: (bytes, int) -> bytes |
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
572 |
'''get the next full utf-8 character in the given string, starting at pos |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
573 |
|
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
574 |
Raises a UnicodeError if the given location does not start a valid |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
575 |
utf-8 character. |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
576 |
''' |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
577 |
|
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
578 |
# find how many bytes to attempt decoding from first nibble |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
579 |
l = _utf8len[ord(s[pos : pos + 1]) >> 4] |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
580 |
if not l: # ascii |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
581 |
return s[pos : pos + 1] |
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
582 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
583 |
c = s[pos : pos + l] |
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
584 |
# validate with attempted decode |
34218
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
585 |
c.decode("utf-8", _utf8strict) |
26875
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
586 |
return c |
cf47bdb2183c
encoding: add getutf8char helper
Matt Mackall <mpm@selenic.com>
parents:
25660
diff
changeset
|
587 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
588 |
|
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
589 |
def toutf8b(s): |
43682
83a349aaeba3
typing: constrain argument/return types of encoding.toutf8b()
Yuya Nishihara <yuya@tcha.org>
parents:
43681
diff
changeset
|
590 |
# type: (bytes) -> bytes |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
591 |
'''convert a local, possibly-binary string into UTF-8b |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
592 |
|
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
593 |
This is intended as a generic method to preserve data when working |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
594 |
with schemes like JSON and XML that have no provision for |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
595 |
arbitrary byte strings. As Mercurial often doesn't know |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
596 |
what encoding data is in, we use so-called UTF-8b. |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
597 |
|
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
598 |
If a string is already valid UTF-8 (or ASCII), it passes unmodified. |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
599 |
Otherwise, unsupported bytes are mapped to UTF-16 surrogate range, |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
600 |
uDC00-uDCFF. |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
601 |
|
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
602 |
Principles of operation: |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
603 |
|
17424
e7cfe3587ea4
fix trivial spelling errors
Mads Kiilerich <mads@kiilerich.com>
parents:
17236
diff
changeset
|
604 |
- ASCII and UTF-8 data successfully round-trips and is understood |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
605 |
by Unicode-oriented clients |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
606 |
- filenames and file contents in arbitrary other encodings can have |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
607 |
be round-tripped or recovered by clueful clients |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
608 |
- local strings that have a cached known UTF-8 encoding (aka |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
609 |
localstr) get sent as UTF-8 so Unicode-oriented clients get the |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
610 |
Unicode data they want |
37947
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
611 |
- non-lossy local strings (aka safelocalstr) get sent as UTF-8 as well |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
612 |
- because we must preserve UTF-8 bytestring in places such as |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
613 |
filenames, metadata can't be roundtripped without help |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
614 |
|
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
615 |
(Note: "UTF-8b" often refers to decoding a mix of valid UTF-8 and |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
616 |
arbitrary bytes into an internal Unicode format that can be |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
617 |
re-encoded back into the original. Here we are exposing the |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
618 |
internal surrogate encoding as a UTF-8 string.) |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
619 |
''' |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
620 |
|
37946
57b0c7221dba
encoding: fix toutf8b() to resurrect lossy characters even if "\xed" in it
Yuya Nishihara <yuya@tcha.org>
parents:
36797
diff
changeset
|
621 |
if isinstance(s, localstr): |
57b0c7221dba
encoding: fix toutf8b() to resurrect lossy characters even if "\xed" in it
Yuya Nishihara <yuya@tcha.org>
parents:
36797
diff
changeset
|
622 |
# assume that the original UTF-8 sequence would never contain |
57b0c7221dba
encoding: fix toutf8b() to resurrect lossy characters even if "\xed" in it
Yuya Nishihara <yuya@tcha.org>
parents:
36797
diff
changeset
|
623 |
# invalid characters in U+DCxx range |
57b0c7221dba
encoding: fix toutf8b() to resurrect lossy characters even if "\xed" in it
Yuya Nishihara <yuya@tcha.org>
parents:
36797
diff
changeset
|
624 |
return s._utf8 |
37947
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
625 |
elif isinstance(s, safelocalstr): |
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
626 |
# already verified that s is non-lossy in legacy encoding, which |
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
627 |
# shouldn't contain characters in U+DCxx range |
3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
Yuya Nishihara <yuya@tcha.org>
parents:
37946
diff
changeset
|
628 |
return fromlocal(s) |
37946
57b0c7221dba
encoding: fix toutf8b() to resurrect lossy characters even if "\xed" in it
Yuya Nishihara <yuya@tcha.org>
parents:
36797
diff
changeset
|
629 |
elif isasciistr(s): |
33928
6c119dbfd0c0
encoding: add fast path of from/toutf8b() for ASCII strings
Yuya Nishihara <yuya@tcha.org>
parents:
33927
diff
changeset
|
630 |
return s |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
631 |
if b"\xed" not in s: |
26879
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
632 |
try: |
34218
aa877860d4d7
py3: use 'surrogatepass' error handler to process U+DCxx transparently
Yuya Nishihara <yuya@tcha.org>
parents:
34216
diff
changeset
|
633 |
s.decode('utf-8', _utf8strict) |
26879
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
634 |
return s |
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
635 |
except UnicodeDecodeError: |
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
636 |
pass |
26878
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
637 |
|
34216
1c601df9894c
py3: wrap bytes in encoding.from/toutf8b() with bytestr
Yuya Nishihara <yuya@tcha.org>
parents:
34200
diff
changeset
|
638 |
s = pycompat.bytestr(s) |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
639 |
r = b"" |
26878
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
640 |
pos = 0 |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
641 |
l = len(s) |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
642 |
while pos < l: |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
643 |
try: |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
644 |
c = getutf8char(s, pos) |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
645 |
if b"\xed\xb0\x80" <= c <= b"\xed\xb3\xbf": |
26879
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
646 |
# have to re-escape existing U+DCxx characters |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
647 |
c = unichr(0xDC00 + ord(s[pos])).encode('utf-8', _utf8strict) |
26879
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
648 |
pos += 1 |
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
649 |
else: |
a24b98f4e03c
encoding: re-escape U+DCxx characters in toutf8b input (issue4927)
Matt Mackall <mpm@selenic.com>
parents:
26878
diff
changeset
|
650 |
pos += len(c) |
26878
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
651 |
except UnicodeDecodeError: |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
652 |
c = unichr(0xDC00 + ord(s[pos])).encode('utf-8', _utf8strict) |
26878
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
653 |
pos += 1 |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
654 |
r += c |
d7e83f106459
encoding: use getutf8char in toutf8b
Matt Mackall <mpm@selenic.com>
parents:
26877
diff
changeset
|
655 |
return r |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
656 |
|
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
657 |
|
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
658 |
def fromutf8b(s): |
43681
b65fcccd9100
typing: fix argument type of encoding.tolocal() and .fromutf8b()
Yuya Nishihara <yuya@tcha.org>
parents:
43680
diff
changeset
|
659 |
# type: (bytes) -> bytes |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
660 |
'''Given a UTF-8b string, return a local, possibly-binary string. |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
661 |
|
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
662 |
return the original binary string. This |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
663 |
is a round-trip process for strings like filenames, but metadata |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
664 |
that's was passed through tolocal will remain in UTF-8. |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
665 |
|
26963
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
666 |
>>> roundtrip = lambda x: fromutf8b(toutf8b(x)) == x |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
667 |
>>> m = b"\\xc3\\xa9\\x99abcd" |
26963
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
668 |
>>> toutf8b(m) |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
669 |
'\\xc3\\xa9\\xed\\xb2\\x99abcd' |
26963
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
670 |
>>> roundtrip(m) |
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
671 |
True |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
672 |
>>> roundtrip(b"\\xc2\\xc2\\x80") |
26963
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
673 |
True |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
674 |
>>> roundtrip(b"\\xef\\xbf\\xbd") |
26963
de5ae97ce9f4
encoding: extend test cases for utf8b
Matt Mackall <mpm@selenic.com>
parents:
26879
diff
changeset
|
675 |
True |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
676 |
>>> roundtrip(b"\\xef\\xef\\xbf\\xbd") |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
677 |
True |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
parents:
33928
diff
changeset
|
678 |
>>> roundtrip(b"\\xf1\\x80\\x80\\x80\\x80") |
27699
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
679 |
True |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
680 |
''' |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
681 |
|
33928
6c119dbfd0c0
encoding: add fast path of from/toutf8b() for ASCII strings
Yuya Nishihara <yuya@tcha.org>
parents:
33927
diff
changeset
|
682 |
if isasciistr(s): |
6c119dbfd0c0
encoding: add fast path of from/toutf8b() for ASCII strings
Yuya Nishihara <yuya@tcha.org>
parents:
33927
diff
changeset
|
683 |
return s |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
684 |
# fast path - look for uDxxx prefixes in s |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
685 |
if b"\xed" not in s: |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
686 |
return s |
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
687 |
|
27699
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
688 |
# We could do this with the unicode type but some Python builds |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
689 |
# use UTF-16 internally (issue5031) which causes non-BMP code |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
690 |
# points to be escaped. Instead, we use our handy getutf8char |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
691 |
# helper again to walk the string without "decoding" it. |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
692 |
|
34216
1c601df9894c
py3: wrap bytes in encoding.from/toutf8b() with bytestr
Yuya Nishihara <yuya@tcha.org>
parents:
34200
diff
changeset
|
693 |
s = pycompat.bytestr(s) |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
694 |
r = b"" |
27699
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
695 |
pos = 0 |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
696 |
l = len(s) |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
697 |
while pos < l: |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
698 |
c = getutf8char(s, pos) |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
699 |
pos += len(c) |
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
700 |
# unescape U+DCxx characters |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
701 |
if b"\xed\xb0\x80" <= c <= b"\xed\xb3\xbf": |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
41836
diff
changeset
|
702 |
c = pycompat.bytechr(ord(c.decode("utf-8", _utf8strict)) & 0xFF) |
27699
c8d3392f76e1
encoding: handle UTF-16 internal limit with fromutf8b (issue5031)
Matt Mackall <mpm@selenic.com>
parents:
27356
diff
changeset
|
703 |
r += c |
16133
84c58da3a1f8
encoding: introduce utf8-b helpers
Matt Mackall <mpm@selenic.com>
parents:
15769
diff
changeset
|
704 |
return r |