forked from gitea/gitea
855 lines
22 KiB
Go
855 lines
22 KiB
Go
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package syntax
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"sort"
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"unicode"
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"unicode/utf8"
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)
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// CharSet combines start-end rune ranges and unicode categories representing a set of characters
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type CharSet struct {
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ranges []singleRange
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categories []category
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sub *CharSet //optional subtractor
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negate bool
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anything bool
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}
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type category struct {
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negate bool
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cat string
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}
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type singleRange struct {
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first rune
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last rune
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}
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const (
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spaceCategoryText = " "
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wordCategoryText = "W"
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)
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var (
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ecmaSpace = []rune{0x0009, 0x000e, 0x0020, 0x0021, 0x00a0, 0x00a1, 0x1680, 0x1681, 0x2000, 0x200b, 0x2028, 0x202a, 0x202f, 0x2030, 0x205f, 0x2060, 0x3000, 0x3001, 0xfeff, 0xff00}
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ecmaWord = []rune{0x0030, 0x003a, 0x0041, 0x005b, 0x005f, 0x0060, 0x0061, 0x007b}
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ecmaDigit = []rune{0x0030, 0x003a}
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)
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var (
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AnyClass = getCharSetFromOldString([]rune{0}, false)
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ECMAAnyClass = getCharSetFromOldString([]rune{0, 0x000a, 0x000b, 0x000d, 0x000e}, false)
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NoneClass = getCharSetFromOldString(nil, false)
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ECMAWordClass = getCharSetFromOldString(ecmaWord, false)
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NotECMAWordClass = getCharSetFromOldString(ecmaWord, true)
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ECMASpaceClass = getCharSetFromOldString(ecmaSpace, false)
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NotECMASpaceClass = getCharSetFromOldString(ecmaSpace, true)
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ECMADigitClass = getCharSetFromOldString(ecmaDigit, false)
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NotECMADigitClass = getCharSetFromOldString(ecmaDigit, true)
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WordClass = getCharSetFromCategoryString(false, false, wordCategoryText)
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NotWordClass = getCharSetFromCategoryString(true, false, wordCategoryText)
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SpaceClass = getCharSetFromCategoryString(false, false, spaceCategoryText)
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NotSpaceClass = getCharSetFromCategoryString(true, false, spaceCategoryText)
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DigitClass = getCharSetFromCategoryString(false, false, "Nd")
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NotDigitClass = getCharSetFromCategoryString(false, true, "Nd")
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)
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var unicodeCategories = func() map[string]*unicode.RangeTable {
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retVal := make(map[string]*unicode.RangeTable)
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for k, v := range unicode.Scripts {
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retVal[k] = v
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}
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for k, v := range unicode.Categories {
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retVal[k] = v
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}
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for k, v := range unicode.Properties {
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retVal[k] = v
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}
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return retVal
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}()
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func getCharSetFromCategoryString(negateSet bool, negateCat bool, cats ...string) func() *CharSet {
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if negateCat && negateSet {
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panic("BUG! You should only negate the set OR the category in a constant setup, but not both")
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}
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c := CharSet{negate: negateSet}
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c.categories = make([]category, len(cats))
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for i, cat := range cats {
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c.categories[i] = category{cat: cat, negate: negateCat}
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}
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return func() *CharSet {
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//make a copy each time
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local := c
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//return that address
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return &local
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}
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}
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func getCharSetFromOldString(setText []rune, negate bool) func() *CharSet {
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c := CharSet{}
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if len(setText) > 0 {
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fillFirst := false
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l := len(setText)
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if negate {
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if setText[0] == 0 {
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setText = setText[1:]
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} else {
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l++
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fillFirst = true
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}
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}
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if l%2 == 0 {
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c.ranges = make([]singleRange, l/2)
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} else {
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c.ranges = make([]singleRange, l/2+1)
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}
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first := true
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if fillFirst {
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c.ranges[0] = singleRange{first: 0}
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first = false
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}
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i := 0
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for _, r := range setText {
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if first {
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// lower bound in a new range
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c.ranges[i] = singleRange{first: r}
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first = false
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} else {
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c.ranges[i].last = r - 1
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i++
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first = true
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}
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}
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if !first {
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c.ranges[i].last = utf8.MaxRune
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}
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}
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return func() *CharSet {
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local := c
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return &local
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}
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}
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// Copy makes a deep copy to prevent accidental mutation of a set
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func (c CharSet) Copy() CharSet {
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ret := CharSet{
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anything: c.anything,
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negate: c.negate,
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}
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ret.ranges = append(ret.ranges, c.ranges...)
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ret.categories = append(ret.categories, c.categories...)
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if c.sub != nil {
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sub := c.sub.Copy()
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ret.sub = &sub
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}
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return ret
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}
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// gets a human-readable description for a set string
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func (c CharSet) String() string {
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buf := &bytes.Buffer{}
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buf.WriteRune('[')
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if c.IsNegated() {
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buf.WriteRune('^')
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}
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for _, r := range c.ranges {
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buf.WriteString(CharDescription(r.first))
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if r.first != r.last {
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if r.last-r.first != 1 {
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//groups that are 1 char apart skip the dash
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buf.WriteRune('-')
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}
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buf.WriteString(CharDescription(r.last))
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}
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}
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for _, c := range c.categories {
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buf.WriteString(c.String())
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}
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if c.sub != nil {
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buf.WriteRune('-')
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buf.WriteString(c.sub.String())
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}
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buf.WriteRune(']')
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return buf.String()
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}
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// mapHashFill converts a charset into a buffer for use in maps
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func (c CharSet) mapHashFill(buf *bytes.Buffer) {
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if c.negate {
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buf.WriteByte(0)
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} else {
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buf.WriteByte(1)
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}
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binary.Write(buf, binary.LittleEndian, len(c.ranges))
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binary.Write(buf, binary.LittleEndian, len(c.categories))
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for _, r := range c.ranges {
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buf.WriteRune(r.first)
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buf.WriteRune(r.last)
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}
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for _, ct := range c.categories {
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buf.WriteString(ct.cat)
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if ct.negate {
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buf.WriteByte(1)
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} else {
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buf.WriteByte(0)
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}
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}
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if c.sub != nil {
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c.sub.mapHashFill(buf)
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}
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}
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// CharIn returns true if the rune is in our character set (either ranges or categories).
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// It handles negations and subtracted sub-charsets.
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func (c CharSet) CharIn(ch rune) bool {
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val := false
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// in s && !s.subtracted
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//check ranges
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for _, r := range c.ranges {
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if ch < r.first {
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continue
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}
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if ch <= r.last {
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val = true
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break
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}
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}
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//check categories if we haven't already found a range
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if !val && len(c.categories) > 0 {
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for _, ct := range c.categories {
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// special categories...then unicode
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if ct.cat == spaceCategoryText {
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if unicode.IsSpace(ch) {
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// we found a space so we're done
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// negate means this is a "bad" thing
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val = !ct.negate
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break
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} else if ct.negate {
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val = true
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break
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}
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} else if ct.cat == wordCategoryText {
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if IsWordChar(ch) {
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val = !ct.negate
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break
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} else if ct.negate {
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val = true
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break
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}
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} else if unicode.Is(unicodeCategories[ct.cat], ch) {
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// if we're in this unicode category then we're done
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// if negate=true on this category then we "failed" our test
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// otherwise we're good that we found it
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val = !ct.negate
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break
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} else if ct.negate {
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val = true
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break
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}
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}
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}
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// negate the whole char set
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if c.negate {
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val = !val
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}
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// get subtracted recurse
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if val && c.sub != nil {
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val = !c.sub.CharIn(ch)
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}
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//log.Printf("Char '%v' in %v == %v", string(ch), c.String(), val)
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return val
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}
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func (c category) String() string {
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switch c.cat {
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case spaceCategoryText:
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if c.negate {
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return "\\S"
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}
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return "\\s"
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case wordCategoryText:
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if c.negate {
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return "\\W"
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}
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return "\\w"
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}
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if _, ok := unicodeCategories[c.cat]; ok {
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if c.negate {
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return "\\P{" + c.cat + "}"
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}
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return "\\p{" + c.cat + "}"
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}
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return "Unknown category: " + c.cat
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}
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// CharDescription Produces a human-readable description for a single character.
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func CharDescription(ch rune) string {
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/*if ch == '\\' {
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return "\\\\"
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}
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if ch > ' ' && ch <= '~' {
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return string(ch)
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} else if ch == '\n' {
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return "\\n"
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} else if ch == ' ' {
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return "\\ "
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}*/
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b := &bytes.Buffer{}
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escape(b, ch, false) //fmt.Sprintf("%U", ch)
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return b.String()
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}
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// According to UTS#18 Unicode Regular Expressions (http://www.unicode.org/reports/tr18/)
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// RL 1.4 Simple Word Boundaries The class of <word_character> includes all Alphabetic
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// values from the Unicode character database, from UnicodeData.txt [UData], plus the U+200C
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// ZERO WIDTH NON-JOINER and U+200D ZERO WIDTH JOINER.
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func IsWordChar(r rune) bool {
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//"L", "Mn", "Nd", "Pc"
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return unicode.In(r,
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unicode.Categories["L"], unicode.Categories["Mn"],
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unicode.Categories["Nd"], unicode.Categories["Pc"]) || r == '\u200D' || r == '\u200C'
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//return 'A' <= r && r <= 'Z' || 'a' <= r && r <= 'z' || '0' <= r && r <= '9' || r == '_'
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}
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func IsECMAWordChar(r rune) bool {
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return unicode.In(r,
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unicode.Categories["L"], unicode.Categories["Mn"],
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unicode.Categories["Nd"], unicode.Categories["Pc"])
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//return 'A' <= r && r <= 'Z' || 'a' <= r && r <= 'z' || '0' <= r && r <= '9' || r == '_'
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}
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// SingletonChar will return the char from the first range without validation.
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// It assumes you have checked for IsSingleton or IsSingletonInverse and will panic given bad input
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func (c CharSet) SingletonChar() rune {
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return c.ranges[0].first
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}
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func (c CharSet) IsSingleton() bool {
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return !c.negate && //negated is multiple chars
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len(c.categories) == 0 && len(c.ranges) == 1 && // multiple ranges and unicode classes represent multiple chars
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c.sub == nil && // subtraction means we've got multiple chars
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c.ranges[0].first == c.ranges[0].last // first and last equal means we're just 1 char
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}
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func (c CharSet) IsSingletonInverse() bool {
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return c.negate && //same as above, but requires negated
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len(c.categories) == 0 && len(c.ranges) == 1 && // multiple ranges and unicode classes represent multiple chars
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c.sub == nil && // subtraction means we've got multiple chars
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c.ranges[0].first == c.ranges[0].last // first and last equal means we're just 1 char
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}
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func (c CharSet) IsMergeable() bool {
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return !c.IsNegated() && !c.HasSubtraction()
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}
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func (c CharSet) IsNegated() bool {
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return c.negate
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}
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func (c CharSet) HasSubtraction() bool {
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return c.sub != nil
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}
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func (c CharSet) IsEmpty() bool {
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return len(c.ranges) == 0 && len(c.categories) == 0 && c.sub == nil
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}
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func (c *CharSet) addDigit(ecma, negate bool, pattern string) {
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if ecma {
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||
|
|
if negate {
|
||
|
|
c.addRanges(NotECMADigitClass().ranges)
|
||
|
|
} else {
|
||
|
|
c.addRanges(ECMADigitClass().ranges)
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
c.addCategories(category{cat: "Nd", negate: negate})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addChar(ch rune) {
|
||
|
|
c.addRange(ch, ch)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addSpace(ecma, negate bool) {
|
||
|
|
if ecma {
|
||
|
|
if negate {
|
||
|
|
c.addRanges(NotECMASpaceClass().ranges)
|
||
|
|
} else {
|
||
|
|
c.addRanges(ECMASpaceClass().ranges)
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
c.addCategories(category{cat: spaceCategoryText, negate: negate})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addWord(ecma, negate bool) {
|
||
|
|
if ecma {
|
||
|
|
if negate {
|
||
|
|
c.addRanges(NotECMAWordClass().ranges)
|
||
|
|
} else {
|
||
|
|
c.addRanges(ECMAWordClass().ranges)
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
c.addCategories(category{cat: wordCategoryText, negate: negate})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add set ranges and categories into ours -- no deduping or anything
|
||
|
|
func (c *CharSet) addSet(set CharSet) {
|
||
|
|
if c.anything {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if set.anything {
|
||
|
|
c.makeAnything()
|
||
|
|
return
|
||
|
|
}
|
||
|
|
// just append here to prevent double-canon
|
||
|
|
c.ranges = append(c.ranges, set.ranges...)
|
||
|
|
c.addCategories(set.categories...)
|
||
|
|
c.canonicalize()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) makeAnything() {
|
||
|
|
c.anything = true
|
||
|
|
c.categories = []category{}
|
||
|
|
c.ranges = AnyClass().ranges
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addCategories(cats ...category) {
|
||
|
|
// don't add dupes and remove positive+negative
|
||
|
|
if c.anything {
|
||
|
|
// if we've had a previous positive+negative group then
|
||
|
|
// just return, we're as broad as we can get
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, ct := range cats {
|
||
|
|
found := false
|
||
|
|
for _, ct2 := range c.categories {
|
||
|
|
if ct.cat == ct2.cat {
|
||
|
|
if ct.negate != ct2.negate {
|
||
|
|
// oposite negations...this mean we just
|
||
|
|
// take us as anything and move on
|
||
|
|
c.makeAnything()
|
||
|
|
return
|
||
|
|
}
|
||
|
|
found = true
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if !found {
|
||
|
|
c.categories = append(c.categories, ct)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Merges new ranges to our own
|
||
|
|
func (c *CharSet) addRanges(ranges []singleRange) {
|
||
|
|
if c.anything {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
c.ranges = append(c.ranges, ranges...)
|
||
|
|
c.canonicalize()
|
||
|
|
}
|
||
|
|
|
||
|
|
// Merges everything but the new ranges into our own
|
||
|
|
func (c *CharSet) addNegativeRanges(ranges []singleRange) {
|
||
|
|
if c.anything {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
var hi rune
|
||
|
|
|
||
|
|
// convert incoming ranges into opposites, assume they are in order
|
||
|
|
for _, r := range ranges {
|
||
|
|
if hi < r.first {
|
||
|
|
c.ranges = append(c.ranges, singleRange{hi, r.first - 1})
|
||
|
|
}
|
||
|
|
hi = r.last + 1
|
||
|
|
}
|
||
|
|
|
||
|
|
if hi < utf8.MaxRune {
|
||
|
|
c.ranges = append(c.ranges, singleRange{hi, utf8.MaxRune})
|
||
|
|
}
|
||
|
|
|
||
|
|
c.canonicalize()
|
||
|
|
}
|
||
|
|
|
||
|
|
func isValidUnicodeCat(catName string) bool {
|
||
|
|
_, ok := unicodeCategories[catName]
|
||
|
|
return ok
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addCategory(categoryName string, negate, caseInsensitive bool, pattern string) {
|
||
|
|
if !isValidUnicodeCat(categoryName) {
|
||
|
|
// unknown unicode category, script, or property "blah"
|
||
|
|
panic(fmt.Errorf("Unknown unicode category, script, or property '%v'", categoryName))
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if caseInsensitive && (categoryName == "Ll" || categoryName == "Lu" || categoryName == "Lt") {
|
||
|
|
// when RegexOptions.IgnoreCase is specified then {Ll} {Lu} and {Lt} cases should all match
|
||
|
|
c.addCategories(
|
||
|
|
category{cat: "Ll", negate: negate},
|
||
|
|
category{cat: "Lu", negate: negate},
|
||
|
|
category{cat: "Lt", negate: negate})
|
||
|
|
}
|
||
|
|
c.addCategories(category{cat: categoryName, negate: negate})
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addSubtraction(sub *CharSet) {
|
||
|
|
c.sub = sub
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addRange(chMin, chMax rune) {
|
||
|
|
c.ranges = append(c.ranges, singleRange{first: chMin, last: chMax})
|
||
|
|
c.canonicalize()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addNamedASCII(name string, negate bool) bool {
|
||
|
|
var rs []singleRange
|
||
|
|
|
||
|
|
switch name {
|
||
|
|
case "alnum":
|
||
|
|
rs = []singleRange{singleRange{'0', '9'}, singleRange{'A', 'Z'}, singleRange{'a', 'z'}}
|
||
|
|
case "alpha":
|
||
|
|
rs = []singleRange{singleRange{'A', 'Z'}, singleRange{'a', 'z'}}
|
||
|
|
case "ascii":
|
||
|
|
rs = []singleRange{singleRange{0, 0x7f}}
|
||
|
|
case "blank":
|
||
|
|
rs = []singleRange{singleRange{'\t', '\t'}, singleRange{' ', ' '}}
|
||
|
|
case "cntrl":
|
||
|
|
rs = []singleRange{singleRange{0, 0x1f}, singleRange{0x7f, 0x7f}}
|
||
|
|
case "digit":
|
||
|
|
c.addDigit(false, negate, "")
|
||
|
|
case "graph":
|
||
|
|
rs = []singleRange{singleRange{'!', '~'}}
|
||
|
|
case "lower":
|
||
|
|
rs = []singleRange{singleRange{'a', 'z'}}
|
||
|
|
case "print":
|
||
|
|
rs = []singleRange{singleRange{' ', '~'}}
|
||
|
|
case "punct": //[!-/:-@[-`{-~]
|
||
|
|
rs = []singleRange{singleRange{'!', '/'}, singleRange{':', '@'}, singleRange{'[', '`'}, singleRange{'{', '~'}}
|
||
|
|
case "space":
|
||
|
|
c.addSpace(true, negate)
|
||
|
|
case "upper":
|
||
|
|
rs = []singleRange{singleRange{'A', 'Z'}}
|
||
|
|
case "word":
|
||
|
|
c.addWord(true, negate)
|
||
|
|
case "xdigit":
|
||
|
|
rs = []singleRange{singleRange{'0', '9'}, singleRange{'A', 'F'}, singleRange{'a', 'f'}}
|
||
|
|
default:
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
if len(rs) > 0 {
|
||
|
|
if negate {
|
||
|
|
c.addNegativeRanges(rs)
|
||
|
|
} else {
|
||
|
|
c.addRanges(rs)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
|
||
|
|
type singleRangeSorter []singleRange
|
||
|
|
|
||
|
|
func (p singleRangeSorter) Len() int { return len(p) }
|
||
|
|
func (p singleRangeSorter) Less(i, j int) bool { return p[i].first < p[j].first }
|
||
|
|
func (p singleRangeSorter) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
|
||
|
|
|
||
|
|
// Logic to reduce a character class to a unique, sorted form.
|
||
|
|
func (c *CharSet) canonicalize() {
|
||
|
|
var i, j int
|
||
|
|
var last rune
|
||
|
|
|
||
|
|
//
|
||
|
|
// Find and eliminate overlapping or abutting ranges
|
||
|
|
//
|
||
|
|
|
||
|
|
if len(c.ranges) > 1 {
|
||
|
|
sort.Sort(singleRangeSorter(c.ranges))
|
||
|
|
|
||
|
|
done := false
|
||
|
|
|
||
|
|
for i, j = 1, 0; ; i++ {
|
||
|
|
for last = c.ranges[j].last; ; i++ {
|
||
|
|
if i == len(c.ranges) || last == utf8.MaxRune {
|
||
|
|
done = true
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
CurrentRange := c.ranges[i]
|
||
|
|
if CurrentRange.first > last+1 {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
if last < CurrentRange.last {
|
||
|
|
last = CurrentRange.last
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
c.ranges[j] = singleRange{first: c.ranges[j].first, last: last}
|
||
|
|
|
||
|
|
j++
|
||
|
|
|
||
|
|
if done {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
if j < i {
|
||
|
|
c.ranges[j] = c.ranges[i]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
c.ranges = append(c.ranges[:j], c.ranges[len(c.ranges):]...)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Adds to the class any lowercase versions of characters already
|
||
|
|
// in the class. Used for case-insensitivity.
|
||
|
|
func (c *CharSet) addLowercase() {
|
||
|
|
if c.anything {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
toAdd := []singleRange{}
|
||
|
|
for i := 0; i < len(c.ranges); i++ {
|
||
|
|
r := c.ranges[i]
|
||
|
|
if r.first == r.last {
|
||
|
|
lower := unicode.ToLower(r.first)
|
||
|
|
c.ranges[i] = singleRange{first: lower, last: lower}
|
||
|
|
} else {
|
||
|
|
toAdd = append(toAdd, r)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, r := range toAdd {
|
||
|
|
c.addLowercaseRange(r.first, r.last)
|
||
|
|
}
|
||
|
|
c.canonicalize()
|
||
|
|
}
|
||
|
|
|
||
|
|
/**************************************************************************
|
||
|
|
Let U be the set of Unicode character values and let L be the lowercase
|
||
|
|
function, mapping from U to U. To perform case insensitive matching of
|
||
|
|
character sets, we need to be able to map an interval I in U, say
|
||
|
|
|
||
|
|
I = [chMin, chMax] = { ch : chMin <= ch <= chMax }
|
||
|
|
|
||
|
|
to a set A such that A contains L(I) and A is contained in the union of
|
||
|
|
I and L(I).
|
||
|
|
|
||
|
|
The table below partitions U into intervals on which L is non-decreasing.
|
||
|
|
Thus, for any interval J = [a, b] contained in one of these intervals,
|
||
|
|
L(J) is contained in [L(a), L(b)].
|
||
|
|
|
||
|
|
It is also true that for any such J, [L(a), L(b)] is contained in the
|
||
|
|
union of J and L(J). This does not follow from L being non-decreasing on
|
||
|
|
these intervals. It follows from the nature of the L on each interval.
|
||
|
|
On each interval, L has one of the following forms:
|
||
|
|
|
||
|
|
(1) L(ch) = constant (LowercaseSet)
|
||
|
|
(2) L(ch) = ch + offset (LowercaseAdd)
|
||
|
|
(3) L(ch) = ch | 1 (LowercaseBor)
|
||
|
|
(4) L(ch) = ch + (ch & 1) (LowercaseBad)
|
||
|
|
|
||
|
|
It is easy to verify that for any of these forms [L(a), L(b)] is
|
||
|
|
contained in the union of [a, b] and L([a, b]).
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
const (
|
||
|
|
LowercaseSet = 0 // Set to arg.
|
||
|
|
LowercaseAdd = 1 // Add arg.
|
||
|
|
LowercaseBor = 2 // Bitwise or with 1.
|
||
|
|
LowercaseBad = 3 // Bitwise and with 1 and add original.
|
||
|
|
)
|
||
|
|
|
||
|
|
type lcMap struct {
|
||
|
|
chMin, chMax rune
|
||
|
|
op, data int32
|
||
|
|
}
|
||
|
|
|
||
|
|
var lcTable = []lcMap{
|
||
|
|
lcMap{'\u0041', '\u005A', LowercaseAdd, 32},
|
||
|
|
lcMap{'\u00C0', '\u00DE', LowercaseAdd, 32},
|
||
|
|
lcMap{'\u0100', '\u012E', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0130', '\u0130', LowercaseSet, 0x0069},
|
||
|
|
lcMap{'\u0132', '\u0136', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0139', '\u0147', LowercaseBad, 0},
|
||
|
|
lcMap{'\u014A', '\u0176', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0178', '\u0178', LowercaseSet, 0x00FF},
|
||
|
|
lcMap{'\u0179', '\u017D', LowercaseBad, 0},
|
||
|
|
lcMap{'\u0181', '\u0181', LowercaseSet, 0x0253},
|
||
|
|
lcMap{'\u0182', '\u0184', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0186', '\u0186', LowercaseSet, 0x0254},
|
||
|
|
lcMap{'\u0187', '\u0187', LowercaseSet, 0x0188},
|
||
|
|
lcMap{'\u0189', '\u018A', LowercaseAdd, 205},
|
||
|
|
lcMap{'\u018B', '\u018B', LowercaseSet, 0x018C},
|
||
|
|
lcMap{'\u018E', '\u018E', LowercaseSet, 0x01DD},
|
||
|
|
lcMap{'\u018F', '\u018F', LowercaseSet, 0x0259},
|
||
|
|
lcMap{'\u0190', '\u0190', LowercaseSet, 0x025B},
|
||
|
|
lcMap{'\u0191', '\u0191', LowercaseSet, 0x0192},
|
||
|
|
lcMap{'\u0193', '\u0193', LowercaseSet, 0x0260},
|
||
|
|
lcMap{'\u0194', '\u0194', LowercaseSet, 0x0263},
|
||
|
|
lcMap{'\u0196', '\u0196', LowercaseSet, 0x0269},
|
||
|
|
lcMap{'\u0197', '\u0197', LowercaseSet, 0x0268},
|
||
|
|
lcMap{'\u0198', '\u0198', LowercaseSet, 0x0199},
|
||
|
|
lcMap{'\u019C', '\u019C', LowercaseSet, 0x026F},
|
||
|
|
lcMap{'\u019D', '\u019D', LowercaseSet, 0x0272},
|
||
|
|
lcMap{'\u019F', '\u019F', LowercaseSet, 0x0275},
|
||
|
|
lcMap{'\u01A0', '\u01A4', LowercaseBor, 0},
|
||
|
|
lcMap{'\u01A7', '\u01A7', LowercaseSet, 0x01A8},
|
||
|
|
lcMap{'\u01A9', '\u01A9', LowercaseSet, 0x0283},
|
||
|
|
lcMap{'\u01AC', '\u01AC', LowercaseSet, 0x01AD},
|
||
|
|
lcMap{'\u01AE', '\u01AE', LowercaseSet, 0x0288},
|
||
|
|
lcMap{'\u01AF', '\u01AF', LowercaseSet, 0x01B0},
|
||
|
|
lcMap{'\u01B1', '\u01B2', LowercaseAdd, 217},
|
||
|
|
lcMap{'\u01B3', '\u01B5', LowercaseBad, 0},
|
||
|
|
lcMap{'\u01B7', '\u01B7', LowercaseSet, 0x0292},
|
||
|
|
lcMap{'\u01B8', '\u01B8', LowercaseSet, 0x01B9},
|
||
|
|
lcMap{'\u01BC', '\u01BC', LowercaseSet, 0x01BD},
|
||
|
|
lcMap{'\u01C4', '\u01C5', LowercaseSet, 0x01C6},
|
||
|
|
lcMap{'\u01C7', '\u01C8', LowercaseSet, 0x01C9},
|
||
|
|
lcMap{'\u01CA', '\u01CB', LowercaseSet, 0x01CC},
|
||
|
|
lcMap{'\u01CD', '\u01DB', LowercaseBad, 0},
|
||
|
|
lcMap{'\u01DE', '\u01EE', LowercaseBor, 0},
|
||
|
|
lcMap{'\u01F1', '\u01F2', LowercaseSet, 0x01F3},
|
||
|
|
lcMap{'\u01F4', '\u01F4', LowercaseSet, 0x01F5},
|
||
|
|
lcMap{'\u01FA', '\u0216', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0386', '\u0386', LowercaseSet, 0x03AC},
|
||
|
|
lcMap{'\u0388', '\u038A', LowercaseAdd, 37},
|
||
|
|
lcMap{'\u038C', '\u038C', LowercaseSet, 0x03CC},
|
||
|
|
lcMap{'\u038E', '\u038F', LowercaseAdd, 63},
|
||
|
|
lcMap{'\u0391', '\u03AB', LowercaseAdd, 32},
|
||
|
|
lcMap{'\u03E2', '\u03EE', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0401', '\u040F', LowercaseAdd, 80},
|
||
|
|
lcMap{'\u0410', '\u042F', LowercaseAdd, 32},
|
||
|
|
lcMap{'\u0460', '\u0480', LowercaseBor, 0},
|
||
|
|
lcMap{'\u0490', '\u04BE', LowercaseBor, 0},
|
||
|
|
lcMap{'\u04C1', '\u04C3', LowercaseBad, 0},
|
||
|
|
lcMap{'\u04C7', '\u04C7', LowercaseSet, 0x04C8},
|
||
|
|
lcMap{'\u04CB', '\u04CB', LowercaseSet, 0x04CC},
|
||
|
|
lcMap{'\u04D0', '\u04EA', LowercaseBor, 0},
|
||
|
|
lcMap{'\u04EE', '\u04F4', LowercaseBor, 0},
|
||
|
|
lcMap{'\u04F8', '\u04F8', LowercaseSet, 0x04F9},
|
||
|
|
lcMap{'\u0531', '\u0556', LowercaseAdd, 48},
|
||
|
|
lcMap{'\u10A0', '\u10C5', LowercaseAdd, 48},
|
||
|
|
lcMap{'\u1E00', '\u1EF8', LowercaseBor, 0},
|
||
|
|
lcMap{'\u1F08', '\u1F0F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F18', '\u1F1F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F28', '\u1F2F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F38', '\u1F3F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F48', '\u1F4D', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F59', '\u1F59', LowercaseSet, 0x1F51},
|
||
|
|
lcMap{'\u1F5B', '\u1F5B', LowercaseSet, 0x1F53},
|
||
|
|
lcMap{'\u1F5D', '\u1F5D', LowercaseSet, 0x1F55},
|
||
|
|
lcMap{'\u1F5F', '\u1F5F', LowercaseSet, 0x1F57},
|
||
|
|
lcMap{'\u1F68', '\u1F6F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F88', '\u1F8F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1F98', '\u1F9F', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1FA8', '\u1FAF', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1FB8', '\u1FB9', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1FBA', '\u1FBB', LowercaseAdd, -74},
|
||
|
|
lcMap{'\u1FBC', '\u1FBC', LowercaseSet, 0x1FB3},
|
||
|
|
lcMap{'\u1FC8', '\u1FCB', LowercaseAdd, -86},
|
||
|
|
lcMap{'\u1FCC', '\u1FCC', LowercaseSet, 0x1FC3},
|
||
|
|
lcMap{'\u1FD8', '\u1FD9', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1FDA', '\u1FDB', LowercaseAdd, -100},
|
||
|
|
lcMap{'\u1FE8', '\u1FE9', LowercaseAdd, -8},
|
||
|
|
lcMap{'\u1FEA', '\u1FEB', LowercaseAdd, -112},
|
||
|
|
lcMap{'\u1FEC', '\u1FEC', LowercaseSet, 0x1FE5},
|
||
|
|
lcMap{'\u1FF8', '\u1FF9', LowercaseAdd, -128},
|
||
|
|
lcMap{'\u1FFA', '\u1FFB', LowercaseAdd, -126},
|
||
|
|
lcMap{'\u1FFC', '\u1FFC', LowercaseSet, 0x1FF3},
|
||
|
|
lcMap{'\u2160', '\u216F', LowercaseAdd, 16},
|
||
|
|
lcMap{'\u24B6', '\u24D0', LowercaseAdd, 26},
|
||
|
|
lcMap{'\uFF21', '\uFF3A', LowercaseAdd, 32},
|
||
|
|
}
|
||
|
|
|
||
|
|
func (c *CharSet) addLowercaseRange(chMin, chMax rune) {
|
||
|
|
var i, iMax, iMid int
|
||
|
|
var chMinT, chMaxT rune
|
||
|
|
var lc lcMap
|
||
|
|
|
||
|
|
for i, iMax = 0, len(lcTable); i < iMax; {
|
||
|
|
iMid = (i + iMax) / 2
|
||
|
|
if lcTable[iMid].chMax < chMin {
|
||
|
|
i = iMid + 1
|
||
|
|
} else {
|
||
|
|
iMax = iMid
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for ; i < len(lcTable); i++ {
|
||
|
|
lc = lcTable[i]
|
||
|
|
if lc.chMin > chMax {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
chMinT = lc.chMin
|
||
|
|
if chMinT < chMin {
|
||
|
|
chMinT = chMin
|
||
|
|
}
|
||
|
|
|
||
|
|
chMaxT = lc.chMax
|
||
|
|
if chMaxT > chMax {
|
||
|
|
chMaxT = chMax
|
||
|
|
}
|
||
|
|
|
||
|
|
switch lc.op {
|
||
|
|
case LowercaseSet:
|
||
|
|
chMinT = rune(lc.data)
|
||
|
|
chMaxT = rune(lc.data)
|
||
|
|
break
|
||
|
|
case LowercaseAdd:
|
||
|
|
chMinT += lc.data
|
||
|
|
chMaxT += lc.data
|
||
|
|
break
|
||
|
|
case LowercaseBor:
|
||
|
|
chMinT |= 1
|
||
|
|
chMaxT |= 1
|
||
|
|
break
|
||
|
|
case LowercaseBad:
|
||
|
|
chMinT += (chMinT & 1)
|
||
|
|
chMaxT += (chMaxT & 1)
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
if chMinT < chMin || chMaxT > chMax {
|
||
|
|
c.addRange(chMinT, chMaxT)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|