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52 lines
2.0 KiB
Go
52 lines
2.0 KiB
Go
6 years ago
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// Copyright 2015 The Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package linkify
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import (
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"unicode"
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"golang.org/x/text/unicode/rangetable"
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)
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var (
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unreserved = [256]bool{'-': true, '.': true, '_': true, '~': true}
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basicPunct = [256]bool{'.': true, ',': true, '?': true, '!': true, ';': true, ':': true}
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subdelims = [256]bool{'!': true, '$': true, '&': true, '\'': true, '(': true, ')': true,
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'*': true, '+': true, ',': true, ';': true, '=': true}
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emailcs = [256]bool{'a': true, 'b': true, 'c': true, 'd': true, 'e': true, 'f': true, 'g': true,
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'h': true, 'i': true, 'j': true, 'k': true, 'l': true, 'm': true, 'n': true, 'o': true,
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'p': true, 'q': true, 'r': true, 's': true, 't': true, 'u': true, 'v': true, 'w': true,
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'x': true, 'y': true, 'z': true, 'A': true, 'B': true, 'C': true, 'D': true, 'E': true,
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'F': true, 'G': true, 'H': true, 'I': true, 'J': true, 'K': true, 'L': true, 'M': true,
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'N': true, 'O': true, 'P': true, 'Q': true, 'R': true, 'S': true, 'T': true, 'U': true,
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'V': true, 'W': true, 'X': true, 'Y': true, 'Z': true, '0': true, '1': true, '2': true,
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'3': true, '4': true, '5': true, '6': true, '7': true, '8': true, '9': true, '!': true,
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'#': true, '$': true, '%': true, '&': true, '\'': true, '*': true, '+': true, '/': true,
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'=': true, '?': true, '^': true, '_': true, '`': true, '{': true, '|': true, '}': true,
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'~': true, '-': true}
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letterOrDigit = rangetable.Merge(unicode.Letter, unicode.Digit)
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punctSpaceCc = rangetable.Merge(unicode.Punct, unicode.Space, unicode.Cc)
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)
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func isAllowedInEmail(r rune) bool {
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return r < 0x7f && emailcs[r]
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}
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func isLetterOrDigit(r rune) bool {
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return unicode.Is(letterOrDigit, r)
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}
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func isPunctOrSpaceOrControl(r rune) bool {
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return r == '<' || r == '>' || r == '\uff5c' || unicode.Is(punctSpaceCc, r)
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}
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func isUnreserved(r rune) bool {
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return (r < 0x7f && unreserved[r]) || unicode.Is(letterOrDigit, r)
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}
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func isSubDelimiter(r rune) bool {
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return r < 0x7f && subdelims[r]
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}
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