37 lines
752 B
Go
37 lines
752 B
Go
package common
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import (
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"encoding/base64"
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"os"
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"strings"
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)
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// ImageFileToBase64 reads an image file and returns a data:image/...;base64 string.
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func ImageFileToBase64(path string) (string, error) {
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data, err := os.ReadFile(path)
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if err != nil {
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return "", err
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}
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ext := strings.ToLower(pathExt(path))
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mime := "image/png"
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switch ext {
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case ".jpg", ".jpeg":
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mime = "image/jpeg"
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case ".gif":
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mime = "image/gif"
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case ".webp":
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mime = "image/webp"
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}
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return "data:" + mime + ";base64," + base64.StdEncoding.EncodeToString(data), nil
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}
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// pathExt extracts the extension from a path.
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func pathExt(path string) string {
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for i := len(path) - 1; i >= 0 && path[i] != '/'; i-- {
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if path[i] == '.' {
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return path[i:]
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}
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}
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return ""
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}
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