[英]Find continuous range in a list of unicode code points
I have a list of unicode code points, something along these lines ( not an actual set, problem illustration only ):我有一个 unicode 代码点列表,大致如下(不是实际集合,仅问题说明):
uni050B
uni050C
uni050D
uni050E
uni050F
uni0510
uni0511
uni0512
uni0513
uni1E00
uni1E01
uni1E3E
uni1E3F
uni1E80
uni1E81
uni1E82
uni1E83
uni1E84
uni1E85
uni1EA0
and so forth…
I need to find the unicode-range
for these.我需要找到这些的
unicode-range
。 Some parts of this set are continuous, with some points missing - so the range is not U+050B-1EA0
.该集合的某些部分是连续的,缺少一些点-因此范围不是
U+050B-1EA0
。 Is there a sensible way of extracting those continuous "sub-ranges"?有没有一种合理的方法来提取那些连续的“子范围”?
I don't know of anything "off-the-shelf" but easy enough to calculate.我不知道任何“现成的”但很容易计算的东西。 Below finds consecutive numbers and builds a
unicode-range
using Python:下面查找连续数字并使用 Python 构建一个
unicode-range
:
import re
def build_range(uni):
'''Pass a list of sorted positive integers to include in the unicode-range.
'''
uni.append(-1) # sentinel prevents having to special case the last element
start,uni = uni[0],uni[1:]
current = start
strings = []
for u in uni:
if u == current: # in case of duplicates
continue
if u == current + 1: # in a consecutive range...
current = u
elif start == current: # single element
strings.append(f'U+{current:X}')
start = current = u
else: # range
strings.append(f'U+{start:X}-{current:X}')
start = current = u
return 'unicode-range: ' + ', '.join(strings) + ';'
data = '''\
uni050B
uni050C
uni050D
uni050E
uni050F
uni0510
uni0511
uni0512
uni0513
uni1E00
uni1E01
uni1E3E
uni1E3F
uni1E80
uni1E81
uni1E82
uni1E83
uni1E84
uni1E85
uni1EA0'''
# parse out the hexadecimal values into an integer list
uni = sorted([int(x,16) for x in re.findall(r'uni([0-9A-F]{4})',data)])
print(build_range(uni))
Output: Output:
unicode-range: U+50B-513, U+1E00-1E01, U+1E3E-1E3F, U+1E80-1E85, U+1EA0;
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