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Switch to SIMD based base64 decoder

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This commit is contained in:
Kovid Goyal
2026-04-21 09:52:39 +05:30
parent 1b741ca725
commit 93573aec6f
4 changed files with 33 additions and 26 deletions
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1
go.mod
View File

@@ -10,6 +10,7 @@ require (
github.com/bmatcuk/doublestar/v4 v4.10.0
github.com/dlclark/regexp2 v1.11.5
github.com/ebitengine/purego v0.10.0
github.com/emmansun/base64 v0.9.0
github.com/google/go-cmp v0.7.0
github.com/google/uuid v1.6.0
github.com/hako/durafmt v0.0.0-20210608085754-5c1018a4e16b

2
go.sum
View File

@@ -14,6 +14,8 @@ github.com/dlclark/regexp2 v1.11.5 h1:Q/sSnsKerHeCkc/jSTNq1oCm7KiVgUMZRDUoRu0JQZ
github.com/dlclark/regexp2 v1.11.5/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
github.com/ebitengine/purego v0.10.0 h1:QIw4xfpWT6GWTzaW5XEKy3HXoqrJGx1ijYHzTF0/ISU=
github.com/ebitengine/purego v0.10.0/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
github.com/emmansun/base64 v0.9.0 h1:92dLrE7iro6g/yWuPsd7M9TzJpe9fEeqKH0H7MApDtE=
github.com/emmansun/base64 v0.9.0/go.mod h1:hp0DxCkKt7bF26HOh4BzhcObvqfH1BVy2vznoGThW6Q=
github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=

11
tools/utils/streaming_base64/api.go
View File

@@ -1,13 +1,16 @@
package streaming_base64
import (
"encoding/base64"
"fmt"
"iter"
"github.com/emmansun/base64"
)
var _ = fmt.Print
type CorruptInputError = base64.CorruptInputError
type StreamingBase64Decoder struct {
leftover [4]byte
num_leftover int
@@ -15,9 +18,9 @@ type StreamingBase64Decoder struct {
}
func wrap_error(err error, chunkOffset int64) error {
if e, ok := err.(base64.CorruptInputError); ok {
if e, ok := err.(CorruptInputError); ok {
// CorruptInputError is an int64 representing the relative byte offset
return base64.CorruptInputError(int64(e) + chunkOffset)
return CorruptInputError(int64(e) + chunkOffset)
}
return err
}
@@ -106,7 +109,7 @@ func (s *StreamingBase64Decoder) Finish() ([]byte, error) {
case 0:
return nil, nil
case 1:
return nil, base64.CorruptInputError(s.total_read - 1)
return nil, CorruptInputError(s.total_read - 1)
case 2:
s.leftover[2] = '='
s.leftover[3] = '='

3
tools/utils/streaming_base64/api_test.go
View File

@@ -4,9 +4,10 @@ package streaming_base64
import (
"bytes"
"encoding/base64"
"fmt"
"testing"
"github.com/emmansun/base64"
)
var _ = fmt.Print