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Use the first 3 bytes for jpeg
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parent
89940677cc
commit
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@ -19,10 +19,10 @@ object DiskUtil {
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return contentType?.startsWith("image/") ?: false
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}
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fun findImageMime(openStream: (() -> InputStream)): String? {
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fun findImageMime(openStream: () -> InputStream): String? {
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try {
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openStream().buffered().use {
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val bytes = ByteArray(11)
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val bytes = ByteArray(8)
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it.mark(bytes.size)
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val length = it.read(bytes, 0, bytes.size)
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it.reset()
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@ -35,13 +35,7 @@ object DiskUtil {
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&& bytes[6] == 0x1A.toByte() && bytes[7] == 0x0A.toByte()) {
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return "image/png"
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} else if (bytes[0] == 0xFF.toByte() && bytes[1] == 0xD8.toByte() && bytes[2] == 0xFF.toByte()) {
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if (bytes[3] == 0xE0.toByte() || bytes[3] == 0xE1.toByte() && bytes[6] == 'E'.toByte()
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&& bytes[7] == 'x'.toByte() && bytes[8] == 'i'.toByte()
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&& bytes[9] == 'f'.toByte() && bytes[10] == 0.toByte()) {
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return "image/jpeg"
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} else if (bytes[3] == 0xEE.toByte()) {
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return "image/jpg"
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}
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return "image/jpeg"
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} else if (bytes[0] == 'W'.toByte() && bytes[1] == 'E'.toByte() && bytes[2] == 'B'.toByte() && bytes[3] == 'P'.toByte()) {
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return "image/webp"
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}
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