diff options
Diffstat (limited to 'vendor/github.com/tdewolff/parse/v2/html/hash.go')
-rw-r--r-- | vendor/github.com/tdewolff/parse/v2/html/hash.go | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/vendor/github.com/tdewolff/parse/v2/html/hash.go b/vendor/github.com/tdewolff/parse/v2/html/hash.go new file mode 100644 index 000000000..16432ade1 --- /dev/null +++ b/vendor/github.com/tdewolff/parse/v2/html/hash.go @@ -0,0 +1,81 @@ +package html + +// generated by hasher -type=Hash -file=hash.go; DO NOT EDIT, except for adding more constants to the list and rerun go generate + +// uses github.com/tdewolff/hasher +//go:generate hasher -type=Hash -file=hash.go + +// Hash defines perfect hashes for a predefined list of strings +type Hash uint32 + +// Unique hash definitions to be used instead of strings +const ( + Iframe Hash = 0x6 // iframe + Math Hash = 0x604 // math + Plaintext Hash = 0x1e09 // plaintext + Script Hash = 0xa06 // script + Style Hash = 0x1405 // style + Svg Hash = 0x1903 // svg + Textarea Hash = 0x2308 // textarea + Title Hash = 0xf05 // title + Xmp Hash = 0x1c03 // xmp +) + +// String returns the hash' name. +func (i Hash) String() string { + start := uint32(i >> 8) + n := uint32(i & 0xff) + if start+n > uint32(len(_Hash_text)) { + return "" + } + return _Hash_text[start : start+n] +} + +// ToHash returns the hash whose name is s. It returns zero if there is no +// such hash. It is case sensitive. +func ToHash(s []byte) Hash { + if len(s) == 0 || len(s) > _Hash_maxLen { + return 0 + } + h := uint32(_Hash_hash0) + for i := 0; i < len(s); i++ { + h ^= uint32(s[i]) + h *= 16777619 + } + if i := _Hash_table[h&uint32(len(_Hash_table)-1)]; int(i&0xff) == len(s) { + t := _Hash_text[i>>8 : i>>8+i&0xff] + for i := 0; i < len(s); i++ { + if t[i] != s[i] { + goto NEXT + } + } + return i + } +NEXT: + if i := _Hash_table[(h>>16)&uint32(len(_Hash_table)-1)]; int(i&0xff) == len(s) { + t := _Hash_text[i>>8 : i>>8+i&0xff] + for i := 0; i < len(s); i++ { + if t[i] != s[i] { + return 0 + } + } + return i + } + return 0 +} + +const _Hash_hash0 = 0x9acb0442 +const _Hash_maxLen = 9 +const _Hash_text = "iframemathscriptitlestylesvgxmplaintextarea" + +var _Hash_table = [1 << 4]Hash{ + 0x0: 0x2308, // textarea + 0x2: 0x6, // iframe + 0x4: 0xf05, // title + 0x5: 0x1e09, // plaintext + 0x7: 0x1405, // style + 0x8: 0x604, // math + 0x9: 0xa06, // script + 0xa: 0x1903, // svg + 0xb: 0x1c03, // xmp +} |