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comparison mercurial/util.py @ 46903:856820b497fc

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merge with stable
author Matt Harbison <matt_harbison@yahoo.com>
date Mon, 12 Apr 2021 22:42:47 -0400
parents 51841b23670b 112826b59476
children ffd3e823a7e5
comparison
equal deleted inserted replaced
46902:631001150e13 46903:856820b497fc
2175 return True 2175 return True
2176 except OSError: 2176 except OSError:
2177 return True 2177 return True
2178 2178
2179 2179
2180 _re2_input = lambda x: x
2180 try: 2181 try:
2181 import re2 # pytype: disable=import-error 2182 import re2 # pytype: disable=import-error
2182 2183
2183 _re2 = None 2184 _re2 = None
2184 except ImportError: 2185 except ImportError:
2186 2187
2187 2188
2188 class _re(object): 2189 class _re(object):
2189 def _checkre2(self): 2190 def _checkre2(self):
2190 global _re2 2191 global _re2
2192 global _re2_input
2191 try: 2193 try:
2192 # check if match works, see issue3964 2194 # check if match works, see issue3964
2193 _re2 = bool(re2.match(br'\[([^\[]+)\]', b'[ui]')) 2195 check_pattern = br'\[([^\[]+)\]'
2196 check_input = b'[ui]'
2197 _re2 = bool(re2.match(check_pattern, check_input))
2194 except ImportError: 2198 except ImportError:
2195 _re2 = False 2199 _re2 = False
2200 except TypeError:
2201 # the `pyre-2` project provides a re2 module that accept bytes
2202 # the `fb-re2` project provides a re2 module that acccept sysstr
2203 check_pattern = pycompat.sysstr(check_pattern)
2204 check_input = pycompat.sysstr(check_input)
2205 _re2 = bool(re2.match(check_pattern, check_input))
2206 _re2_input = pycompat.sysstr
2196 2207
2197 def compile(self, pat, flags=0): 2208 def compile(self, pat, flags=0):
2198 """Compile a regular expression, using re2 if possible 2209 """Compile a regular expression, using re2 if possible
2199 2210
2200 For best performance, use only re2-compatible regexp features. The 2211 For best performance, use only re2-compatible regexp features. The
2206 if flags & remod.IGNORECASE: 2217 if flags & remod.IGNORECASE:
2207 pat = b'(?i)' + pat 2218 pat = b'(?i)' + pat
2208 if flags & remod.MULTILINE: 2219 if flags & remod.MULTILINE:
2209 pat = b'(?m)' + pat 2220 pat = b'(?m)' + pat
2210 try: 2221 try:
2211 return re2.compile(pat) 2222 return re2.compile(_re2_input(pat))
2212 except re2.error: 2223 except re2.error:
2213 pass 2224 pass
2214 return remod.compile(pat, flags) 2225 return remod.compile(pat, flags)
2215 2226
2216 @propertycache 2227 @propertycache