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|
require 'test/unit'
class TestSprintfComb < Test::Unit::TestCase
VS = [
#-0x1000000000000000000000000000000000000000000000002,
#-0x1000000000000000000000000000000000000000000000001,
#-0x1000000000000000000000000000000000000000000000000,
#-0xffffffffffffffffffffffffffffffffffffffffffffffff,
#-0x1000000000000000000000002,
#-0x1000000000000000000000001,
#-0x1000000000000000000000000,
#-0xffffffffffffffffffffffff,
-0x10000000000000002,
-0x10000000000000001,
-0x10000000000000000,
-0xffffffffffffffff,
-0x4000000000000002,
-0x4000000000000001,
-0x4000000000000000,
-0x3fffffffffffffff,
-0x100000002,
-0x100000001,
-0x100000000,
-0xffffffff,
#-0xc717a08d, # 0xc717a08d * 0x524b2245 = 0x4000000000000001
-0x80000002,
-0x80000001,
-0x80000000,
-0x7fffffff,
#-0x524b2245,
-0x40000002,
-0x40000001,
-0x40000000,
-0x3fffffff,
#-0x10002,
#-0x10001,
#-0x10000,
#-0xffff,
#-0x8101, # 0x8101 * 0x7f01 = 0x40000001
#-0x8002,
#-0x8001,
#-0x8000,
#-0x7fff,
#-0x7f01,
#-65,
#-64,
#-63,
#-62,
#-33,
#-32,
#-31,
#-30,
-3,
-2,
-1,
0,
1,
2,
3,
#30,
#31,
#32,
#33,
#62,
#63,
#64,
#65,
#0x7f01,
#0x7ffe,
#0x7fff,
#0x8000,
#0x8001,
#0x8101,
#0xfffe,
#0xffff,
#0x10000,
#0x10001,
0x3ffffffe,
0x3fffffff,
0x40000000,
0x40000001,
#0x524b2245,
0x7ffffffe,
0x7fffffff,
0x80000000,
0x80000001,
#0xc717a08d,
0xfffffffe,
0xffffffff,
0x100000000,
0x100000001,
0x3ffffffffffffffe,
0x3fffffffffffffff,
0x4000000000000000,
0x4000000000000001,
0xfffffffffffffffe,
0xffffffffffffffff,
0x10000000000000000,
0x10000000000000001,
#0xffffffffffffffffffffffff,
#0x1000000000000000000000000,
#0x1000000000000000000000001,
#0xffffffffffffffffffffffffffffffffffffffffffffffff,
#0x1000000000000000000000000000000000000000000000000,
#0x1000000000000000000000000000000000000000000000001
]
VS.reverse!
def combination(*args)
args = args.map {|a| a.to_a }
i = 0
while true
n = i
as = []
args.reverse_each {|a|
n, m = n.divmod(a.length)
as.unshift a[m]
}
break if 0 < n
yield as
i += 1
end
end
def emu(format, v)
/\A%( )?(\#)?(\+)?(-)?(0)?(\d+)?(?:\.(\d+))?(.)\z/ =~ format
sp = $1
hs = $2
pl = $3
mi = $4
zr = $5
width = $6
precision = $7
type = $8
width = width.to_i if width
precision = precision.to_i if precision
prefix = ''
zr = nil if precision
zr = nil if mi && zr
case type
when 'b'
radix = 2
digitmap = {0 => '0', 1 => '1'}
complement = !pl && !sp
prefix = '0b' if hs && v != 0
when 'd'
radix = 10
digitmap = {}
10.times {|i| digitmap[i] = i.to_s }
complement = false
when 'o'
radix = 8
digitmap = {}
8.times {|i| digitmap[i] = i.to_s }
complement = !pl && !sp
when 'X'
radix = 16
digitmap = {}
16.times {|i| digitmap[i] = i.to_s(16).upcase }
complement = !pl && !sp
prefix = '0X' if hs && v != 0
when 'x'
radix = 16
digitmap = {}
16.times {|i| digitmap[i] = i.to_s(16) }
complement = !pl && !sp
prefix = '0x' if hs && v != 0
else
raise "unexpected type: #{type.inspect}"
end
digits = []
abs = v.abs
sign = ''
while 0 < abs
digits << (abs % radix)
abs /= radix
end
if v < 0
if complement
digits.map! {|d| radix-1 - d }
carry = 1
digits.each_index {|i|
digits[i] += carry
carry = 0
if radix <= digits[i]
digits[i] -= radix
carry = 1
end
}
if digits.last != radix-1
digits << (radix-1)
end
sign = '..'
else
sign = '-'
end
else
if pl
sign = '+'
elsif sp
sign = ' '
end
end
dlen = digits.length
dlen += 2 if sign == '..'
if v < 0 && complement
d = radix - 1
else
d = 0
end
if precision
if dlen < precision
(precision - dlen).times {
digits << d
}
end
else
if dlen == 0
digits << d
end
end
if type == 'o' && hs
if digits.empty? || digits.last != d
digits << d
end
end
digits.reverse!
str = digits.map {|d| digitmap[d] }.join
pad = ''
nlen = prefix.length + sign.length + str.length
if width && nlen < width
len = width - nlen
if zr
if complement && v < 0
pad = digitmap[radix-1] * len
else
pad = '0' * len
end
else
pad = ' ' * len
end
end
if / / =~ pad
if sign == '..'
str = prefix + sign + str
else
str = sign + prefix + str
end
if mi
str = str + pad
else
str = pad + str
end
else
if sign == '..'
str = prefix + sign + pad + str
else
str = sign + prefix + pad + str
end
end
str
end
def test_format
combination(
%w[b d o X x],
[nil, 0, 5, 20],
[nil, 0, 8, 20],
['', ' '],
['', '#'],
['', '+'],
['', '-'],
['', '0']) {|type, width, precision, sp, hs, pl, mi, zr|
if precision
precision = ".#{precision}"
end
format = "%#{sp}#{hs}#{pl}#{mi}#{zr}#{width}#{precision}#{type}"
VS.each {|v|
r = sprintf format, v
e = emu format, v
if true
assert_equal(e, r, "sprintf(#{format.dump}, #{v})")
else
if e != r
puts "#{e.dump}\t#{r.dump}\tsprintf(#{format.dump}, #{v})"
end
end
}
}
end
end
|
