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完善 pack

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This commit is contained in:
源文雨
2022-09-30 22:10:05 +08:00
parent 74b92c0711
commit 71948481ee
5 changed files with 53 additions and 6 deletions
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2
base.go
View File

@@ -42,7 +42,7 @@ func NewBase(off, til uint16, bit uint8) (*Base, error) {
if tile > 0x10000 {
return nil, ErrTailOverflow
}
if tile > uint32(off) || uint32(til) < offe {
if tile > uint32(off) && tile <= offe {
return nil, ErrTailInCodingArea
}
return &Base{

11
go.mod
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@@ -2,4 +2,13 @@ module github.com/fumiama/unibase2n
go 1.18
require golang.org/x/text v0.3.7
require (
github.com/stretchr/testify v1.8.0
golang.org/x/text v0.3.7
)
require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

15
go.sum
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@@ -1,2 +1,17 @@
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

5
pack.go
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@@ -2,7 +2,6 @@ package unibase2n
import (
"encoding/binary"
"math/bits"
"unsafe"
)
@@ -49,9 +48,7 @@ func New(pack Pack) *Base {
*(*Pack)(unsafe.Pointer(b)) = pack
return b
}
// change to native endian
n := bits.Reverse64(uint64(pack))
field := (*[8]byte)(unsafe.Pointer(&n))
field := (*[8]byte)(unsafe.Pointer(&pack))
if isitle { // packed in little endian but I am big
b.off = binary.BigEndian.Uint16(field[6:8])
b.til = binary.BigEndian.Uint16(field[4:6])

26
pack_test.go Normal file
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@@ -0,0 +1,26 @@
package unibase2n
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestPackUnpack(t *testing.T) {
bs, err := NewBase(0x1234, 0x5678, 8)
if err != nil {
t.Fatal(err)
}
p := bs.Pack()
bs1 := New(p)
assert.Equal(t, bs, bs1)
ismele := isLittleEndian()
if ismele {
// simulate be pack -> le unpack
bs2 := New(0x1234567808000000)
assert.Equal(t, bs, bs2)
} else { // simulate le pack -> be unpack
bs2 := New(0x0000000878563412)
assert.Equal(t, bs, bs2)
}
}