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package magic
import (
"bytes"
)
var (
// Woff matches a Web Open Font Format file.
Woff = prefix([]byte("wOFF"))
// Woff2 matches a Web Open Font Format version 2 file.
Woff2 = prefix([]byte("wOF2"))
// Otf matches an OpenType font file.
Otf = prefix([]byte{0x4F, 0x54, 0x54, 0x4F, 0x00})
)
// Ttf matches a TrueType font file.
func Ttf(raw []byte, limit uint32) bool {
if !bytes.HasPrefix(raw, []byte{0x00, 0x01, 0x00, 0x00}) {
return false
}
return !MsAccessAce(raw, limit) && !MsAccessMdb(raw, limit)
}
// Eot matches an Embedded OpenType font file.
func Eot(raw []byte, limit uint32) bool {
return len(raw) > 35 &&
bytes.Equal(raw[34:36], []byte{0x4C, 0x50}) &&
(bytes.Equal(raw[8:11], []byte{0x02, 0x00, 0x01}) ||
bytes.Equal(raw[8:11], []byte{0x01, 0x00, 0x00}) ||
bytes.Equal(raw[8:11], []byte{0x02, 0x00, 0x02}))
}
// Ttc matches a TrueType Collection font file.
func Ttc(raw []byte, limit uint32) bool {
return len(raw) > 7 &&
bytes.HasPrefix(raw, []byte("ttcf")) &&
(bytes.Equal(raw[4:8], []byte{0x00, 0x01, 0x00, 0x00}) ||
bytes.Equal(raw[4:8], []byte{0x00, 0x02, 0x00, 0x00}))
}
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