forked from JuliaLang/julia
-
Notifications
You must be signed in to change notification settings - Fork 0
/
iobuffer.jl
234 lines (220 loc) · 6.45 KB
/
iobuffer.jl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
# This file is a part of Julia. License is MIT: https://julialang.org/license
ioslength(io::IOBuffer) = (io.seekable ? io.size : nb_available(io))
let io = IOBuffer()
@test eof(io)
@test_throws EOFError read(io,UInt8)
@test write(io,"abc") === 3
@test isreadable(io)
@test iswritable(io)
@test isopen(io)
@test ioslength(io) == 3
@test position(io) == 3
@test eof(io)
seek(io, 0)
@test read(io,UInt8) == convert(UInt8, 'a')
a = Array{UInt8}(2)
@test read!(io, a) == a
@test a == UInt8['b','c']
@test String(io) == "abc"
seek(io, 1)
truncate(io, 2)
@test position(io) == 1
@test !eof(io)
seekend(io)
@test position(io) == 2
truncate(io, 0)
@test position(io) == 0
truncate(io, 10)
@test position(io) == 0
@test all(io.data .== 0)
@test write(io,Int16[1,2,3,4,5,6]) === 12
seek(io, 2)
truncate(io, 10)
@test ioslength(io) == 10
io.readable = false
@test_throws ArgumentError read!(io,UInt8[0])
truncate(io, 0)
@test write(io,"boston\ncambridge\n") > 0
@test String(take!(io)) == "boston\ncambridge\n"
@test String(take!(io)) == ""
@test write(io, Complex{Float64}(0)) === 16
@test write(io, Rational{Int64}(1//2)) === 16
close(io)
@test_throws ArgumentError write(io,UInt8[0])
@test_throws ArgumentError seek(io,0)
@test eof(io)
end
let io = IOBuffer("hamster\nguinea pig\nturtle")
@test position(io) == 0
@test readline(io) == "hamster"
@test readstring(io) == "guinea pig\nturtle"
@test_throws EOFError read(io,UInt8)
seek(io,0)
@test read(io,UInt8) == convert(UInt8, 'h')
@test_throws ArgumentError truncate(io,0)
@test_throws ArgumentError write(io,UInt8(0))
@test_throws ArgumentError write(io,UInt8[0])
@test String(take!(io)) == "hamster\nguinea pig\nturtle"
@test String(take!(io)) == "hamster\nguinea pig\nturtle" #should be unchanged
close(io)
end
let io = PipeBuffer()
@test_throws EOFError read(io,UInt8)
@test write(io,"pancakes\nwaffles\nblueberries\n") > 0
@test position(io) == 0
@test readline(io) == "pancakes"
Base.compact(io)
@test readline(io) == "waffles"
@test write(io,"whipped cream\n") > 0
@test readline(io) == "blueberries"
@test_throws ArgumentError seek(io,0)
@test_throws ArgumentError truncate(io,0)
@test readline(io) == "whipped cream"
@test write(io,"pancakes\nwaffles\nblueberries\n") > 0
@test readlines(io) == String["pancakes", "waffles", "blueberries"]
write(io,"\n\r\n\n\r \n") > 0
@test readlines(io, chomp=false) == String["\n", "\r\n", "\n", "\r \n"]
write(io,"\n\r\n\n\r \n") > 0
@test readlines(io, chomp=true) == String["", "", "", "\r "]
@test write(io,"α\nβ\nγ\nδ") > 0
@test readlines(io, chomp=false) == String["α\n","β\n","γ\n","δ"]
@test write(io,"α\nβ\nγ\nδ") > 0
@test readlines(io, chomp=true) == String["α", "β", "γ", "δ"]
@test readlines(IOBuffer(""), chomp=false) == []
@test readlines(IOBuffer(""), chomp=true) == []
@test readlines(IOBuffer("first\nsecond"), chomp=false) == String["first\n", "second"]
@test readlines(IOBuffer("first\nsecond"), chomp=true) == String["first", "second"]
Base.compact(io)
@test position(io) == 0
@test ioslength(io) == 0
Base.ensureroom(io,50)
@test position(io) == 0
@test ioslength(io) == 0
@test length(io.data) == 50
Base.ensureroom(io,10)
@test ioslength(io) == 0
@test length(io.data) == 50
io.maxsize = 75
Base.ensureroom(io,100)
@test ioslength(io) == 0
@test length(io.data) == 75
seekend(io)
@test ioslength(io) == 0
@test position(io) == 0
write(io,zeros(UInt8,200))
@test ioslength(io) == 75
@test length(io.data) == 75
write(io,1)
@test ioslength(io) == 75
@test length(io.data) == 75
write(io,[1,2,3])
@test ioslength(io) == 75
@test length(io.data) == 75
skip(io,1)
@test write(io,UInt8(104)) === 1
skip(io,3)
@test write(io,b"apples") === 3
skip(io,71)
@test write(io,'y') === 1
@test readstring(io) == "happy"
@test eof(io)
write(io,zeros(UInt8,73))
write(io,'a')
write(io,'b')
write(io,'c')
write(io,'d')
write(io,'e')
@test ioslength(io) == 75
@test length(io.data) == 75
@test position(io) == 0
skip(io,72)
@test String(take!(io)) == "\0ab"
@test String(take!(io)) == ""
# issues 4021
print(io, true)
close(io)
end
# issue 5453
let io=IOBuffer("abcdef")
a = Array{UInt8}(1024)
@test_throws EOFError read!(io,a)
@test eof(io)
end
@test isempty(readlines(IOBuffer(), chomp=false))
# issue #8193
let io=IOBuffer("asdf")
@test position(skip(io, -1)) == 0
@test position(skip(io, 6)) == 4
@test position(seek(io, -1)) == 0
@test position(seek(io, 6)) == 4
end
# issue #10658
let io=IOBuffer("hello")
@test position(skip(io, 4)) == 4
@test position(skip(io, 10)) == 5
@test position(skip(io, -2)) == 3
@test position(skip(io, -3)) == 0
@test position(skip(io, -3)) == 0
end
# pr #11554
let io=IOBuffer(SubString("***αhelloworldω***",4,16)), io2 = IOBuffer(b"goodnightmoon", true, true)
@test read(io, Char) == 'α'
@test_throws ArgumentError write(io,"!")
@test_throws ArgumentError write(io,'β')
a = Array{UInt8}(10)
@test read!(io, a) === a
@test String(a) == "helloworld"
@test read(io, Char) == 'ω'
@test_throws EOFError read(io,UInt8)
skip(io, -3)
@test readstring(io) == "dω"
@test String(io) == "αhelloworldω"
@test_throws ArgumentError write(io,"!")
@test take!(io) == b"αhelloworldω"
seek(io, 2)
seekend(io2)
write(io2, io)
@test readstring(io) == ""
@test readstring(io2) == ""
@test String(take!(io)) == "αhelloworldω"
seek(io2, 0)
truncate(io2, io2.size - 2)
@test readstring(io2) == "goodnightmoonhelloworld"
seek(io2, 0)
write(io2, io2)
@test readstring(io2) == ""
@test String(io2) == "goodnightmoonhelloworld"
end
# issue #11917
# (previous tests triggered this sometimes, but this should trigger nearly all the time)
let io = IOBuffer(0)
write(io, ones(UInt8, 1048577))
end
let bstream = BufferStream()
@test isopen(bstream)
@test isreadable(bstream)
@test iswritable(bstream)
@test nb_available(bstream) == 0
@test sprint(show, bstream) == "BufferStream() bytes waiting:$(nb_available(bstream.buffer)), isopen:true"
a = rand(UInt8,10)
write(bstream,a)
@test !eof(bstream)
@test flush(bstream) === nothing
b = read(bstream,UInt8)
@test a[1] == b
b = read(bstream,UInt8)
@test a[2] == b
c = zeros(UInt8,8)
@test nb_available(bstream) == 8
@test !eof(bstream)
read!(bstream,c)
@test c == a[3:10]
@test close(bstream) === nothing
@test eof(bstream)
@test nb_available(bstream) == 0
end
@test flush(IOBuffer()) === nothing # should be a no-op
# pr #19461
let io = IOBuffer()
@test Base.buffer_writes(io) === io
end