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
|
@system unittest
{
import std.stdio;
static import std.file;
auto testFile = std.file.deleteme();
std.file.write(testFile, "\r\n\n\r\n");
scope(exit) std.file.remove(testFile);
auto f = File(testFile, "r");
auto buf = f.rawRead(new char[5]);
f.close();
assert(buf == "\r\n\n\r\n");
}
@system unittest
{
import std.stdio;
static import std.file;
auto testFile = std.file.deleteme();
auto f = File(testFile, "w");
scope(exit) std.file.remove(testFile);
f.rawWrite("\r\n\n\r\n");
f.close();
assert(std.file.read(testFile) == "\r\n\n\r\n");
}
@system unittest
{
import std.stdio;
import std.conv : text;
static import std.file;
auto testFile = std.file.deleteme();
std.file.write(testFile, "abcdefghijklmnopqrstuvwqxyz");
scope(exit) { std.file.remove(testFile); }
auto f = File(testFile);
auto a = new ubyte[4];
f.rawRead(a);
assert(f.tell == 4, text(f.tell));
}
@system unittest
{
import std.stdio;
static import std.file;
auto deleteme = std.file.deleteme();
std.file.write(deleteme, "hello\nworld\ntrue\nfalse\n");
scope(exit) std.file.remove(deleteme);
string s;
auto f = File(deleteme);
f.readf!"%s\n"(s);
assert(s == "hello", "["~s~"]");
f.readf("%s\n", s);
assert(s == "world", "["~s~"]");
bool b1, b2;
f.readf("%s\n%s\n", b1, b2);
assert(b1 == true && b2 == false);
}
@system unittest
{
import std.stdio;
static import std.file;
import std.typecons : tuple;
// prepare test file
auto testFile = std.file.deleteme();
scope(failure) printf("Failed test at line %d\n", __LINE__);
std.file.write(testFile, "1 2\n4 1\n5 100");
scope(exit) std.file.remove(testFile);
File f = File(testFile);
scope(exit) f.close();
auto expected = [tuple(1, 2), tuple(4, 1), tuple(5, 100)];
uint i;
foreach (e; f.byRecord!(int, int)("%s %s"))
{
assert(e == expected[i++]);
}
}
@safe unittest
{
import std.stdio;
static assert(isFileHandle!(FILE*));
static assert(isFileHandle!(File));
}
@safe unittest
{
import std.stdio;
// Read stdin, sort lines, write to stdout
import std.algorithm.mutation : copy;
import std.algorithm.sorting : sort;
import std.array : array;
import std.typecons : Yes;
void main()
{
stdin // read from stdin
.byLineCopy(Yes.keepTerminator) // copying each line
.array() // convert to array of lines
.sort() // sort the lines
.copy( // copy output of .sort to an OutputRange
stdout.lockingTextWriter()); // the OutputRange
}
}
@safe unittest
{
import std.stdio;
void main()
{
stdout.writeln("Write a message to stdout.");
}
}
@safe unittest
{
import std.stdio;
void main()
{
import std.algorithm.iteration : filter, map, sum;
import std.format : format;
import std.range : iota, tee;
int len;
const r = 6.iota
.filter!(a => a % 2) // 1 3 5
.map!(a => a * 2) // 2 6 10
.tee!(_ => stdout.writefln("len: %d", len++))
.sum;
assert(r == 18);
}
}
@safe unittest
{
import std.stdio;
void main()
{
import std.algorithm.mutation : copy;
import std.algorithm.iteration : map;
import std.format : format;
import std.range : iota;
10.iota
.map!(e => "N: %d".format(e))
.copy(stdout.lockingTextWriter()); // the OutputRange
}
}
@safe unittest
{
import std.stdio;
void main()
{
stderr.writeln("Write a message to stderr.");
}
}
|
