hash.go (1984B)
1 package html 2 3 // generated by hasher -type=Hash -file=hash.go; DO NOT EDIT, except for adding more constants to the list and rerun go generate 4 5 // uses github.com/tdewolff/hasher 6 //go:generate hasher -type=Hash -file=hash.go 7 8 // Hash defines perfect hashes for a predefined list of strings 9 type Hash uint32 10 11 // Unique hash definitions to be used instead of strings 12 const ( 13 Iframe Hash = 0x6 // iframe 14 Math Hash = 0x604 // math 15 Plaintext Hash = 0x1e09 // plaintext 16 Script Hash = 0xa06 // script 17 Style Hash = 0x1405 // style 18 Svg Hash = 0x1903 // svg 19 Textarea Hash = 0x2308 // textarea 20 Title Hash = 0xf05 // title 21 Xmp Hash = 0x1c03 // xmp 22 ) 23 24 // String returns the hash' name. 25 func (i Hash) String() string { 26 start := uint32(i >> 8) 27 n := uint32(i & 0xff) 28 if start+n > uint32(len(_Hash_text)) { 29 return "" 30 } 31 return _Hash_text[start : start+n] 32 } 33 34 // ToHash returns the hash whose name is s. It returns zero if there is no 35 // such hash. It is case sensitive. 36 func ToHash(s []byte) Hash { 37 if len(s) == 0 || len(s) > _Hash_maxLen { 38 return 0 39 } 40 h := uint32(_Hash_hash0) 41 for i := 0; i < len(s); i++ { 42 h ^= uint32(s[i]) 43 h *= 16777619 44 } 45 if i := _Hash_table[h&uint32(len(_Hash_table)-1)]; int(i&0xff) == len(s) { 46 t := _Hash_text[i>>8 : i>>8+i&0xff] 47 for i := 0; i < len(s); i++ { 48 if t[i] != s[i] { 49 goto NEXT 50 } 51 } 52 return i 53 } 54 NEXT: 55 if i := _Hash_table[(h>>16)&uint32(len(_Hash_table)-1)]; int(i&0xff) == len(s) { 56 t := _Hash_text[i>>8 : i>>8+i&0xff] 57 for i := 0; i < len(s); i++ { 58 if t[i] != s[i] { 59 return 0 60 } 61 } 62 return i 63 } 64 return 0 65 } 66 67 const _Hash_hash0 = 0x9acb0442 68 const _Hash_maxLen = 9 69 const _Hash_text = "iframemathscriptitlestylesvgxmplaintextarea" 70 71 var _Hash_table = [1 << 4]Hash{ 72 0x0: 0x2308, // textarea 73 0x2: 0x6, // iframe 74 0x4: 0xf05, // title 75 0x5: 0x1e09, // plaintext 76 0x7: 0x1405, // style 77 0x8: 0x604, // math 78 0x9: 0xa06, // script 79 0xa: 0x1903, // svg 80 0xb: 0x1c03, // xmp 81 }