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76 lines
1.5 KiB
76 lines
1.5 KiB
package mahonia
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// Converters for ASCII and ISO-8859-1
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func init() {
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for i := 0; i < len(asciiCharsets); i++ {
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RegisterCharset(&asciiCharsets[i])
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}
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}
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var asciiCharsets = []Charset{
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{
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Name: "US-ASCII",
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NewDecoder: func() Decoder { return decodeASCIIRune },
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NewEncoder: func() Encoder { return encodeASCIIRune },
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Aliases: []string{"ASCII", "US", "ISO646-US", "IBM367", "cp367", "ANSI_X3.4-1968", "iso-ir-6", "ANSI_X3.4-1986", "ISO_646.irv:1991", "csASCII"},
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},
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{
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Name: "ISO-8859-1",
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NewDecoder: func() Decoder { return decodeLatin1Rune },
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NewEncoder: func() Encoder { return encodeLatin1Rune },
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Aliases: []string{"latin1", "ISO Latin 1", "IBM819", "cp819", "ISO_8859-1:1987", "iso-ir-100", "l1", "csISOLatin1"},
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},
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}
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func decodeASCIIRune(p []byte) (c rune, size int, status Status) {
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if len(p) == 0 {
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status = NO_ROOM
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return
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}
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b := p[0]
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if b > 127 {
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return 0xfffd, 1, INVALID_CHAR
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}
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return rune(b), 1, SUCCESS
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}
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func encodeASCIIRune(p []byte, c rune) (size int, status Status) {
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if len(p) == 0 {
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status = NO_ROOM
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return
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}
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if c < 128 {
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p[0] = byte(c)
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return 1, SUCCESS
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}
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p[0] = '?'
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return 1, INVALID_CHAR
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}
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func decodeLatin1Rune(p []byte) (c rune, size int, status Status) {
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if len(p) == 0 {
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status = NO_ROOM
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return
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}
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return rune(p[0]), 1, SUCCESS
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}
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func encodeLatin1Rune(p []byte, c rune) (size int, status Status) {
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if len(p) == 0 {
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status = NO_ROOM
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return
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}
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if c < 256 {
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p[0] = byte(c)
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return 1, SUCCESS
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}
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p[0] = '?'
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return 1, INVALID_CHAR
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}
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