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encode file contents as base64 when the result is smaller #13

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encode file contents as base64 when the result is smaller #13

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c22588b
config/types/files: encode file contents as base64 when the result is…
jepio Nov 5, 2021
324132f
config/types/files: add unit test for makeDataUrl function
jepio Jan 18, 2022
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24 changes: 16 additions & 8 deletions config/types/files.go
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
package types

import (
"encoding/base64"
"errors"
"flag"
"fmt"
Expand Down Expand Up @@ -129,6 +130,19 @@ func (fc FileContents) Validate() report.Report {
return report.Report{}
}

func makeDataUrl(contents []byte) string {
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@invidian invidian Jan 18, 2022

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I'd suggest putting private function below the init() function, which tends to be at the top of the file.

opaque := "," + dataurl.Escape(contents)
b64 := ";base64," + base64.StdEncoding.EncodeToString(contents)
if len(b64) < len(opaque) {
opaque = b64
}
uri := (&url.URL{
Scheme: "data",
Opaque: opaque,
}).String()
return uri
}
Comment on lines +133 to +144
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@invidian invidian Jan 18, 2022

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I think formatting can be more compact:

Suggested change
func makeDataUrl(contents []byte) string {
opaque := "," + dataurl.Escape(contents)
b64 := ";base64," + base64.StdEncoding.EncodeToString(contents)
if len(b64) < len(opaque) {
opaque = b64
}
uri := (&url.URL{
Scheme: "data",
Opaque: opaque,
}).String()
return uri
}
func makeDataUrl(contents []byte) string {
opaque := "," + dataurl.Escape(contents)
if b64 := ";base64," + base64.StdEncoding.EncodeToString(contents); len(b64) < len(opaque) {
opaque = b64
}
return (&url.URL{
Scheme: "data",
Opaque: opaque,
}).String()
}

b64 declaration can be moved outside of if block though, no preferences here.


func init() {
register(func(in Config, ast astnode.AstNode, out ignTypes.Config, platform string) (ignTypes.Config, report.Report, astnode.AstNode) {
r := report.Report{}
Expand Down Expand Up @@ -167,10 +181,7 @@ func init() {

if file.Contents.Inline != "" {
newFile.Contents = ignTypes.FileContents{
Source: (&url.URL{
Scheme: "data",
Opaque: "," + dataurl.EscapeString(file.Contents.Inline),
}).String(),
Source: makeDataUrl([]byte(file.Contents.Inline)),
}
}

Expand Down Expand Up @@ -203,10 +214,7 @@ func init() {

// Include the contents of the local file as if it were provided inline.
newFile.Contents = ignTypes.FileContents{
Source: (&url.URL{
Scheme: "data",
Opaque: "," + dataurl.Escape(contents),
}).String(),
Source: makeDataUrl(contents),
}
}

Expand Down