mirror of https://github.com/tidwall/tile38.git
92 lines
1.6 KiB
Go
92 lines
1.6 KiB
Go
package glob
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import "path"
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type Glob struct {
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Pattern string
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Desc bool
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Limits []string
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IsGlob bool
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}
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func Match(pattern, name string) (matched bool, err error) {
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return path.Match(pattern, name)
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}
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func IsGlob(pattern string) bool {
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for i := 0; i < len(pattern); i++ {
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switch pattern[i] {
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case '[', '*', '?':
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_, err := Match(pattern, "whatever")
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return err == nil
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}
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}
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return false
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}
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func Parse(pattern string, desc bool) *Glob {
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g := &Glob{Pattern: pattern, Desc: desc, Limits: []string{"", ""}}
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if pattern == "*" {
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g.IsGlob = true
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return g
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}
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if pattern == "" {
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g.IsGlob = false
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return g
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}
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n := 0
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isGlob := false
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outer:
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for i := 0; i < len(pattern); i++ {
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switch pattern[i] {
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case '[', '*', '?':
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_, err := Match(pattern, "whatever")
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if err == nil {
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isGlob = true
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}
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break outer
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}
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n++
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}
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if n == 0 {
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g.Limits = []string{pattern, pattern}
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g.IsGlob = false
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return g
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}
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var a, b string
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if desc {
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a = pattern[:n]
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b = a
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if b[n-1] == 0x00 {
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for len(b) > 0 && b[len(b)-1] == 0x00 {
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if len(b) > 1 {
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if b[len(b)-2] == 0x00 {
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b = b[:len(b)-1]
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} else {
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b = string(append([]byte(b[:len(b)-2]), b[len(b)-2]-1, 0xFF))
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}
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} else {
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b = ""
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}
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}
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} else {
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b = string(append([]byte(b[:n-1]), b[n-1]-1))
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}
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if a[n-1] == 0xFF {
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a = string(append([]byte(a), 0x00))
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} else {
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a = string(append([]byte(a[:n-1]), a[n-1]+1))
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}
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} else {
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a = pattern[:n]
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if a[n-1] == 0xFF {
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b = string(append([]byte(a), 0x00))
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} else {
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b = string(append([]byte(a[:n-1]), a[n-1]+1))
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}
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}
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g.Limits = []string{a, b}
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g.IsGlob = isGlob
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return g
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}
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