Go 1.18 and up now provides a strings.Cut() which is better suited for
splitting key/value pairs (and similar constructs), and performs better:
```go
func BenchmarkSplit(b *testing.B) {
b.ReportAllocs()
data := []string{"12hello=world", "12hello=", "12=hello", "12hello"}
for i := 0; i < b.N; i++ {
for _, s := range data {
_ = strings.SplitN(s, "=", 2)[0]
}
}
}
func BenchmarkCut(b *testing.B) {
b.ReportAllocs()
data := []string{"12hello=world", "12hello=", "12=hello", "12hello"}
for i := 0; i < b.N; i++ {
for _, s := range data {
_, _, _ = strings.Cut(s, "=")
}
}
}
```
BenchmarkSplit
BenchmarkSplit-10 8244206 128.0 ns/op 128 B/op 4 allocs/op
BenchmarkCut
BenchmarkCut-10 54411998 21.80 ns/op 0 B/op 0 allocs/op
While looking at occurrences of `strings.Split()`, I also updated some for alternatives,
or added some constraints; for cases where an specific number of items is expected, I used `strings.SplitN()`
with a suitable limit. This prevents (theoretical) unlimited splits.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The io/ioutil package has been deprecated as of Go 1.16, see
https://golang.org/doc/go1.16#ioutil. This commit replaces the existing
io/ioutil functions with their new definitions in io and os packages.
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
I missed this in my previous change: the ctr man page is also
in Section 8, because it's considered an administrative tool,
and containerd-config is related to containerd so updating these
as well.
This commit also fixes naming of the generated files, which was
hard-coded to .1.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Seems to be that docs/man/ctr.1.md and docs/man/containerd.1.md were
removed in #3637 and were not updated correctly in the Makefile, leading
to build failures like:
+ make man
make: *** No rule to make target `man/ctr.1', needed by `man'. Stop.
Changes the gen-manpages command to be specific on which manpages are to
be generated.
Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>
