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20 lines
691 B
20 lines
691 B
10 years ago
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package mahonia
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// FallbackDecoder combines a series of Decoders into one.
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// If the first Decoder returns a status of INVALID_CHAR, the others are tried as well.
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//
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// Note: if the text to be decoded ends with a sequence of bytes that is not a valid character in the first charset,
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// but it could be the beginning of a valid character, the FallbackDecoder will give a status of NO_ROOM instead of
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// falling back to the other Decoders.
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func FallbackDecoder(decoders ...Decoder) Decoder {
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return func(p []byte) (c rune, size int, status Status) {
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for _, d := range decoders {
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c, size, status = d(p)
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if status != INVALID_CHAR {
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return
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}
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}
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return 0, 1, INVALID_CHAR
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}
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}
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