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https://github.com/mudler/LocalAI.git
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51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package utils
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import (
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"encoding/base64"
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"fmt"
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"io"
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"net/http"
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"regexp"
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"strings"
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"time"
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"github.com/rs/zerolog/log"
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)
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var base64DownloadClient http.Client = http.Client{
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Timeout: 30 * time.Second,
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}
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var dataURIPattern = regexp.MustCompile(`^data:([^;]+);base64,`)
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// GetContentURIAsBase64 checks if the string is an URL, if it's an URL downloads the content in memory encodes it in base64 and returns the base64 string, otherwise returns the string by stripping base64 data headers
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func GetContentURIAsBase64(s string) (string, error) {
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if strings.HasPrefix(s, "http") {
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// download the image
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resp, err := base64DownloadClient.Get(s)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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// read the image data into memory
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data, err := io.ReadAll(resp.Body)
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if err != nil {
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return "", err
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}
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// encode the image data in base64
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encoded := base64.StdEncoding.EncodeToString(data)
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// return the base64 string
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return encoded, nil
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}
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// Match any data URI prefix pattern
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if match := dataURIPattern.FindString(s); match != "" {
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log.Debug().Msgf("Found data URI prefix: %s", match)
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return strings.Replace(s, match, "", 1), nil
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}
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return "", fmt.Errorf("not valid base64 data type string")
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}
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