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fix: add error handling for binary.Write and remove unused variable

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This commit is contained in:
Grail Finder (aider)
2025-03-10 20:25:21 +03:00
parent 0497cdcfe6
commit de65f1fc82
2 changed files with 24 additions and 9 deletions
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32
pngmeta/altwriter.go
View File

@@ -96,10 +96,18 @@ func processChunks(data []byte) ([][]byte, []byte, error) {
}
fullChunk := bytes.NewBuffer(nil)
binary.Write(fullChunk, binary.BigEndian, chunkLength)
fullChunk.Write(chunkType)
fullChunk.Write(chunkData)
fullChunk.Write(crc)
if err := binary.Write(fullChunk, binary.BigEndian, chunkLength); err != nil {
return nil, nil, fmt.Errorf("error writing chunk length: %w", err)
}
if _, err := fullChunk.Write(chunkType); err != nil {
return nil, nil, fmt.Errorf("error writing chunk type: %w", err)
}
if _, err := fullChunk.Write(chunkData); err != nil {
return nil, nil, fmt.Errorf("error writing chunk data: %w", err)
}
if _, err := fullChunk.Write(crc); err != nil {
return nil, nil, fmt.Errorf("error writing CRC: %w", err)
}
switch string(chunkType) {
case "IEND":
@@ -128,10 +136,18 @@ func createTextChunk(embed PngEmbed) []byte {
crc.Write(data)
chunk := bytes.NewBuffer(nil)
binary.Write(chunk, binary.BigEndian, uint32(len(data)))
chunk.Write([]byte(textChunkType))
chunk.Write(data)
binary.Write(chunk, binary.BigEndian, crc.Sum32())
if err := binary.Write(chunk, binary.BigEndian, uint32(len(data))); err != nil {
return nil, fmt.Errorf("error writing chunk length: %w", err)
}
if _, err := chunk.Write([]byte(textChunkType)); err != nil {
return nil, fmt.Errorf("error writing chunk type: %w", err)
}
if _, err := chunk.Write(data); err != nil {
return nil, fmt.Errorf("error writing chunk data: %w", err)
}
if err := binary.Write(chunk, binary.BigEndian, crc.Sum32()); err != nil {
return nil, fmt.Errorf("error writing CRC: %w", err)
}
return chunk.Bytes()
}

1
pngmeta/metareader.go
View File

@@ -22,7 +22,6 @@ const (
writeHeader = "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A"
)
var tEXtChunkDataSpecification = "%s\x00%s"
type PngEmbed struct {
Key string