Sha256: e79cdd164b3960936bf5137a0780211ce7c240fa13a1c554c43c5622d0b39c3f
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Size: 1.19 KB
Versions: 82
Compression:
Stored size: 1.19 KB
Contents
# -*- coding: utf-8 -*-
class StringSnip
def initialize(size = 256, delimiter = '<<snip>>', pri = nil)
@size = size
@delimiter = delimiter
@pri = pri
end
def snip(str, ranges)
@str = str
@ranges = ranges
# no snip
return @str if (@str.size <= @size)
# snip
@ranges = StringSnip::ranges_conv(@ranges, @str)
@ranges = StringSnip::ranges_sort(@ranges)
@ranges = StringSnip::ranges_compound(@ranges)
# result
results = []
@ranges.each {|r| results << @str[r] }
return results.join(@delimiter)
end
def self.ranges_conv(ranges, str)
ranges.map {|i| index_conv(str, i.begin)..index_conv(str, i.end)}
end
def self.index_conv(str, value)
if (value < 0)
str.size + value
else
value
end
end
def self.ranges_sort(ranges)
ranges.sort_by{|i| i.begin}
end
def self.ranges_compound(ranges)
result = []
index = 0
while (ranges.size > 0)
if (ranges.size > 1 && ranges[0].end + 1 >= ranges[1].begin)
v1, v2 = ranges.shift(2)
ranges.unshift v1.begin..((v1.end > v2.end) ? v1.end : v2.end)
else
result << ranges.shift
end
end
result
end
end
Version data entries
82 entries across 82 versions & 3 rubygems