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- restored 1.5.2 compatibility (sorry, eric) 

- removed __all__ cruft from internal modules (sorry, skip)
- don't assume ASCII for string escapes (sorry, per)
This commit is contained in:
Fredrik Lundh 2001-02-18 12:05:16 +00:00
parent ae7636753e
commit f2989b22ff
5 changed files with 39 additions and 31 deletions
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14
Lib/sre.py
View File

@ -17,9 +17,14 @@
import sre_compile
import sre_parse
__all__ = ["match","search","sub","subn","split","findall","compile",
"purge","template","escape","I","L","M","S","X","U","IGNORECASE",
"LOCALE","MULTILINE","DOTALL","VERBOSE","UNICODE","error"]
# public symbols
__all__ = [ "match", "search", "sub", "subn", "split", "findall",
"compile", "purge", "template", "escape", "I", "L", "M", "S", "X",
"U", "IGNORECASE", "LOCALE", "MULTILINE", "DOTALL", "VERBOSE",
"UNICODE", "error" ]
# this module works under 1.5.2 and later. don't use string methods
import string
# flags
I = IGNORECASE = sre_compile.SRE_FLAG_IGNORECASE # ignore case
@ -88,7 +93,6 @@ def purge():
def template(pattern, flags=0):
"Compile a template pattern, returning a pattern object"
return _compile(pattern, flags|T)
def escape(pattern):
@ -111,7 +115,7 @@ _MAXCACHE = 100
def _join(seq, sep):
# internal: join into string having the same type as sep
return sep[:0].join(seq)
return string.join(seq, sep[:0])
def _compile(*key):
# internal: compile pattern

2
Lib/sre_compile.py
View File

@ -12,8 +12,6 @@ import _sre
from sre_constants import *
__all__ = ["compile"]
assert _sre.MAGIC == MAGIC, "SRE module mismatch"
MAXCODE = 65535

3
Lib/sre_constants.py
View File

@ -195,11 +195,12 @@ SRE_INFO_LITERAL = 2 # entire pattern is literal (given by prefix)
SRE_INFO_CHARSET = 4 # pattern starts with character from given set
if __name__ == "__main__":
import string
def dump(f, d, prefix):
items = d.items()
items.sort(lambda a, b: cmp(a[1], b[1]))
for k, v in items:
f.write("#define %s_%s %s\n" % (prefix, k.upper(), v))
f.write("#define %s_%s %s\n" % (prefix, string.upper(k), v))
f = open("sre_constants.h", "w")
f.write("""\
/*

49
Lib/sre_parse.py
View File

@ -10,13 +10,11 @@
# XXX: show string offset and offending character for all errors
import sys
# this module works under 1.5.2 and later. don't use string methods
import string, sys
from sre_constants import *
__all__ = ["Pattern","SubPattern","Tokenizer","parse","parse_template",
"expand_template"]
SPECIAL_CHARS = ".\\[{()*+?^$|"
REPEAT_CHARS = "*+?{"
@ -28,13 +26,13 @@ HEXDIGITS = tuple("0123456789abcdefABCDEF")
WHITESPACE = tuple(" \t\n\r\v\f")
ESCAPES = {
r"\a": (LITERAL, 7),
r"\b": (LITERAL, 8),
r"\f": (LITERAL, 12),
r"\n": (LITERAL, 10),
r"\r": (LITERAL, 13),
r"\t": (LITERAL, 9),
r"\v": (LITERAL, 11),
r"\a": (LITERAL, ord("\a")),
r"\b": (LITERAL, ord("\b")),
r"\f": (LITERAL, ord("\f")),
r"\n": (LITERAL, ord("\n")),
r"\r": (LITERAL, ord("\r")),
r"\t": (LITERAL, ord("\t")),
r"\v": (LITERAL, ord("\v")),
r"\\": (LITERAL, ord("\\"))
}
@ -63,6 +61,13 @@ FLAGS = {
"u": SRE_FLAG_UNICODE,
}
# figure out best way to convert hex/octal numbers to integers
try:
int("10", 8)
atoi = int # 2.0 and later
except TypeError:
atoi = string.atoi # 1.5.2
class Pattern:
# master pattern object. keeps track of global attributes
def __init__(self):
@ -219,7 +224,7 @@ def isname(name):
def _group(escape, groups):
# check if the escape string represents a valid group
try:
gid = int(escape[1:])
gid = atoi(escape[1:])
if gid and gid < groups:
return gid
except ValueError:
@ -242,13 +247,13 @@ def _class_escape(source, escape):
escape = escape[2:]
if len(escape) != 2:
raise error, "bogus escape: %s" % repr("\\" + escape)
return LITERAL, int(escape, 16) & 0xff
return LITERAL, atoi(escape, 16) & 0xff
elif str(escape[1:2]) in OCTDIGITS:
# octal escape (up to three digits)
while source.next in OCTDIGITS and len(escape) < 5:
escape = escape + source.get()
escape = escape[1:]
return LITERAL, int(escape, 8) & 0xff
return LITERAL, atoi(escape, 8) & 0xff
if len(escape) == 2:
return LITERAL, ord(escape[1])
except ValueError:
@ -270,12 +275,12 @@ def _escape(source, escape, state):
escape = escape + source.get()
if len(escape) != 4:
raise ValueError
return LITERAL, int(escape[2:], 16) & 0xff
return LITERAL, atoi(escape[2:], 16) & 0xff
elif escape[1:2] == "0":
# octal escape
while source.next in OCTDIGITS and len(escape) < 4:
escape = escape + source.get()
return LITERAL, int(escape[1:], 8) & 0xff
return LITERAL, atoi(escape[1:], 8) & 0xff
elif escape[1:2] in DIGITS:
# octal escape *or* decimal group reference (sigh)
here = source.tell()
@ -285,7 +290,7 @@ def _escape(source, escape, state):
source.next in OCTDIGITS):
# got three octal digits; this is an octal escape
escape = escape + source.get()
return LITERAL, int(escape[1:], 8) & 0xff
return LITERAL, atoi(escape[1:], 8) & 0xff
# got at least one decimal digit; this is a group reference
group = _group(escape, state.groups)
if group:
@ -459,9 +464,9 @@ def _parse(source, state):
source.seek(here)
continue
if lo:
min = int(lo)
min = atoi(lo)
if hi:
max = int(hi)
max = atoi(hi)
if max < min:
raise error, "bad repeat interval"
else:
@ -649,7 +654,7 @@ def parse_template(source, pattern):
if not name:
raise error, "bad group name"
try:
index = int(name)
index = atoi(name)
except ValueError:
if not isname(name):
raise error, "bad character in group name"
@ -673,7 +678,7 @@ def parse_template(source, pattern):
break
if not code:
this = this[1:]
code = LITERAL, int(this[-6:], 8) & 0xff
code = LITERAL, atoi(this[-6:], 8) & 0xff
a(code)
else:
try:
@ -702,4 +707,4 @@ def expand_template(template, match):
if s is None:
raise error, "empty group"
a(s)
return sep.join(p)
return string.join(p, sep)

2
Lib/test/test_sre.py
View File

@ -8,7 +8,7 @@ sys.path=['.']+sys.path
from test_support import verbose, TestFailed
import sre
import sys, os, traceback
import sys, os, string, traceback
#
# test support