go-libwebp

commit 8979a905cefe51e1defa798ca9ad938bff72c326
parent 66763fde44257f5366633282ba6124b166f250a5
Author: Jack Mordaunt <jackmordaunt.dev@gmail.com>
Date:   Tue, 26 Mar 2024 14:48:56 +0800

lib/dynamic: nil guard function pointers

In the case of bad init we can avoid panicking.

Signed-off-by: Jack Mordaunt <jackmordaunt.dev@gmail.com>

Diffstat:
M
lib/dynamic/webp/encode_default.go
 | 
4
++++
M
lib/dynamic/webp/lib.go
 | 
3
+++

2 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/lib/dynamic/webp/encode_default.go b/lib/dynamic/webp/encode_default.go
@@ -3,6 +3,7 @@
 package webp
 
 import (
+	"fmt"
 	"image"
 	"io"
 
@@ -13,5 +14,8 @@ func encodeImpl(w io.Writer, m *image.NRGBA, quality float32) error {
 	if quality >= 1.0 {
 		return common.Encode(w, m, quality, wrappedLossless, WebPFree)
 	}
+	if WebPEncodeRGBA == nil || WebPFree == nil {
+		return fmt.Errorf("functions not initialized")
+	}
 	return common.Encode(w, m, quality, WebPEncodeRGBA, WebPFree)
 }
diff --git a/lib/dynamic/webp/lib.go b/lib/dynamic/webp/lib.go
@@ -57,6 +57,9 @@ func Init() (err error) {
 }
 
 func DecodeImpl(buf []byte) (image.Image, error) {
+	if WebPDecodeRGBA == nil || WebPFree == nil {
+		return nil, fmt.Errorf("functions not initialized")
+	}
 	return common.Decode(buf, WebPDecodeRGBA, WebPFree)
 }