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Fix some files are recognized as SVG incorrectly, make the diff UI unable to work #23310

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Fix some files are recognized as SVG incorrectly, make the diff UI unable to work #23310

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c29348c
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stuzer05 Mar 5, 2023
b840e40
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stuzer05 Mar 5, 2023
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@stuzer05
stuzer05 committed Mar 5, 2023
commit c29348c81ca68ec225a7c9b5e2947a00f5826be7
12 changes: 0 additions & 12 deletions modules/typesniffer/typesniffer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@ import (
"fmt"
"io"
"net/http"
"regexp"
"strings"

"code.gitea.io/gitea/modules/util"
Expand All @@ -23,11 +22,6 @@ const (
ApplicationOctetStream = "application/octet-stream"
)

var (
svgTagRegex = regexp.MustCompile(`(?si)\A\s*(?:(<!--.*?-->|<!DOCTYPE\s+svg([\s:]+.*?>|>))\s*)*<svg[\s>\/]`)
svgTagInXMLRegex = regexp.MustCompile(`(?si)\A<\?xml\b.*?\?>\s*(?:(<!--.*?-->|<!DOCTYPE\s+svg([\s:]+.*?>|>))\s*)*<svg[\s>\/]`)
)

// SniffedType contains information about a blobs type.
type SniffedType struct {
contentType string
Expand Down Expand Up @@ -91,12 +85,6 @@ func DetectContentType(data []byte) SniffedType {
data = data[:sniffLen]
}

if (strings.Contains(ct, "text/plain") || strings.Contains(ct, "text/html")) && svgTagRegex.Match(data) ||
strings.Contains(ct, "text/xml") && svgTagInXMLRegex.Match(data) {
// SVG is unsupported. https://github.com/golang/go/issues/15888
ct = SvgMimeType
}

return SniffedType{ct}
}

Expand Down