from collections import defaultdict
import fileinput, re, os, sys
preamble = '''// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// NOTE: The following code was generated by "scripts/unicode.py", do not edit
// directly
#![allow(warnings)]
'''
expanded_categories = {
'Lu': ['LC', 'L'], 'Ll': ['LC', 'L'], 'Lt': ['LC', 'L'],
'Lm': ['L'], 'Lo': ['L'],
'Mn': ['M'], 'Mc': ['M'], 'Me': ['M'],
'Nd': ['N'], 'Nl': ['N'], 'No': ['No'],
'Pc': ['P'], 'Pd': ['P'], 'Ps': ['P'], 'Pe': ['P'],
'Pi': ['P'], 'Pf': ['P'], 'Po': ['P'],
'Sm': ['S'], 'Sc': ['S'], 'Sk': ['S'], 'So': ['S'],
'Zs': ['Z'], 'Zl': ['Z'], 'Zp': ['Z'],
'Cc': ['C'], 'Cf': ['C'], 'Cs': ['C'], 'Co': ['C'], 'Cn': ['C'],
}
def fetch(f):
if not os.path.exists(f):
os.system("curl -O http://www.unicode.org/Public/UNIDATA/%s"
% f)
if not os.path.exists(f):
sys.stderr.write("cannot load %s" % f)
exit(1)
def is_surrogate(n):
return 0xD800 <= n <= 0xDFFF
def load_unicode_data(f):
fetch(f)
gencats = {}
udict = {};
range_start = -1;
for line in fileinput.input(f):
data = line.split(';');
if len(data) != 15:
continue
cp = int(data[0], 16);
if is_surrogate(cp):
continue
if range_start >= 0:
for i in xrange(range_start, cp):
udict[i] = data;
range_start = -1;
if data[1].endswith(", First>"):
range_start = cp;
continue;
udict[cp] = data;
for code in udict:
[code_org, name, gencat, combine, bidi,
decomp, deci, digit, num, mirror,
old, iso, upcase, lowcase, titlecase ] = udict[code];
for cat in [gencat, "Assigned"] + expanded_categories.get(gencat, []):
if cat not in gencats:
gencats[cat] = []
gencats[cat].append(code)
gencats["Cn"] = gen_unassigned(gencats["Assigned"])
del(gencats["Assigned"])
gencats["C"].extend(gencats["Cn"])
gencats = group_cats(gencats)
return gencats
def group_cats(cats):
cats_out = {}
for cat in cats:
cats_out[cat] = group_cat(cats[cat])
return cats_out
def group_cat(cat):
cat_out = []
letters = sorted(set(cat))
cur_start = letters.pop(0)
cur_end = cur_start
for letter in letters:
assert letter > cur_end, \
"cur_end: %s, letter: %s" % (hex(cur_end), hex(letter))
if letter == cur_end + 1:
cur_end = letter
else:
cat_out.append((cur_start, cur_end))
cur_start = cur_end = letter
cat_out.append((cur_start, cur_end))
return cat_out
def ungroup_cat(cat):
cat_out = []
for (lo, hi) in cat:
while lo <= hi:
cat_out.append(lo)
lo += 1
return cat_out
def gen_unassigned(assigned):
assigned = set(assigned)
return ([i for i in range(0, 0xd800) if i not in assigned] +
[i for i in range(0xe000, 0x110000) if i not in assigned])
def format_table_content(f, content, indent):
line = " "*indent
first = True
for chunk in content.split(","):
if len(line) + len(chunk) < 78:
if first:
line += chunk
else:
line += ", " + chunk
first = False
else:
f.write(line + ",\n")
line = " "*indent + chunk
f.write(line)
def load_properties(f, interestingprops):
fetch(f)
props = {}
re1 = re.compile("^ *([0-9A-F]+) *; *(\w+)")
re2 = re.compile("^ *([0-9A-F]+)\.\.([0-9A-F]+) *; *(\w+)")
for line in fileinput.input(f):
prop = None
d_lo = 0
d_hi = 0
m = re1.match(line)
if m:
d_lo = m.group(1)
d_hi = m.group(1)
prop = m.group(2)
else:
m = re2.match(line)
if m:
d_lo = m.group(1)
d_hi = m.group(2)
prop = m.group(3)
else:
continue
if interestingprops and prop not in interestingprops:
continue
d_lo = int(d_lo, 16)
d_hi = int(d_hi, 16)
if prop not in props:
props[prop] = []
props[prop].append((d_lo, d_hi))
for prop in props:
props[prop] = group_cat(ungroup_cat(props[prop]))
return props
def load_case_folding(f):
fetch(f)
re1 = re.compile("^ *([0-9A-F]+) *; *[CS] *; *([0-9A-F]+) *;")
all_pairs = defaultdict(list)
for line in fileinput.input(f):
m = re1.match(line)
if m:
a = int(m.group(1), 16)
b = int(m.group(2), 16)
all_pairs[a].append(b)
all_pairs[b].append(a)
both = set()
for k, vs in all_pairs.iteritems():
for v in vs:
both.add((k, v))
for v2 in all_pairs[v]:
both.add((k, v2))
c_plus_s_both = sorted((k1, k2) for k1, k2 in both if k1 != k2)
return {"C_plus_S_both": c_plus_s_both}
def escape_char(c):
return "'\\u{%x}'" % c
def emit_table(f, name, t_data, t_type = "&'static [(char, char)]", is_pub=True,
pfun=lambda x: "(%s,%s)" % (escape_char(x[0]), escape_char(x[1]))):
pub_string = ""
if is_pub:
pub_string = "pub "
f.write(" %sconst %s: %s = &[\n" % (pub_string, name, t_type))
data = ""
first = True
for dat in t_data:
if not first:
data += ","
first = False
data += pfun(dat)
format_table_content(f, data, 8)
f.write("\n ];\n\n")
def emit_property_module(f, mod, tbl):
f.write("pub mod %s {\n" % mod)
keys = tbl.keys()
keys.sort()
for cat in keys:
emit_table(f, "%s_table" % cat, tbl[cat])
f.write("}\n\n")
def emit_regex_module(f, cats, w_data):
f.write("pub mod regex {\n")
regex_class = "&'static [(char, char)]"
class_table = "&'static [(&'static str, %s)]" % regex_class
emit_table(f, "UNICODE_CLASSES", cats, class_table,
pfun=lambda x: "(\"%s\",super::%s::%s_table)" % (x[0], x[1], x[0]))
f.write(" pub const PERLD: %s = super::general_category::Nd_table;\n\n"
% regex_class)
f.write(" pub const PERLS: %s = super::property::White_Space_table;\n\n"
% regex_class)
emit_table(f, "PERLW", w_data, regex_class)
f.write("}\n\n")
if __name__ == "__main__":
r = "unicode.rs"
if os.path.exists(r):
os.remove(r)
with open(r, "w") as rf:
rf.write(preamble)
fetch("ReadMe.txt")
with open("ReadMe.txt") as readme:
pattern = "for Version (\d+)\.(\d+)\.(\d+) of the Unicode"
unicode_version = re.search(pattern, readme.read()).groups()
gencats = load_unicode_data("UnicodeData.txt")
want_derived = ["XID_Start", "XID_Continue", "Alphabetic", "Lowercase", "Uppercase"]
other_derived = ["Default_Ignorable_Code_Point", "Grapheme_Extend"]
derived = load_properties("DerivedCoreProperties.txt", want_derived + other_derived)
scripts = load_properties("Scripts.txt", [])
props = load_properties("PropList.txt",
["White_Space", "Join_Control", "Noncharacter_Code_Point"])
case_folding = load_case_folding("CaseFolding.txt")
allcats = []
for (name, cat) in ("general_category", gencats), \
("derived_property", derived), \
("script", scripts), \
("property", props):
emit_property_module(rf, name, cat)
allcats.extend(map(lambda x: (x, name), cat))
allcats.sort(key=lambda c: c[0])
perl_words = []
for cat in derived["Alphabetic"], gencats["M"], gencats["Nd"], \
gencats["Pc"], props["Join_Control"]:
perl_words.extend(ungroup_cat(cat))
perl_words = group_cat(perl_words)
emit_regex_module(rf, allcats, perl_words)
emit_property_module(rf, "case_folding", case_folding)