forked from TrueCloudLab/frostfs-s3-gw
68 lines
2 KiB
Go
68 lines
2 KiB
Go
|
/*
|
||
|
|
* MinIO Cloud Storage, (C) 2015, 2016 MinIO, Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package wildcard
|
||
|
|
|
||
|
|
// MatchSimple - finds whether the text matches/satisfies the pattern string.
|
||
|
|
// supports only '*' wildcard in the pattern.
|
||
|
|
// considers a file system path as a flat name space.
|
||
|
|
func MatchSimple(pattern, name string) bool {
|
||
|
|
if pattern == "" {
|
||
|
|
return name == pattern
|
||
|
|
}
|
||
|
|
if pattern == "*" {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
// Does only wildcard '*' match.
|
||
|
|
return deepMatchRune([]rune(name), []rune(pattern), true)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Match - finds whether the text matches/satisfies the pattern string.
|
||
|
|
// supports '*' and '?' wildcards in the pattern string.
|
||
|
|
// unlike path.Match(), considers a path as a flat name space while matching the pattern.
|
||
|
|
// The difference is illustrated in the example here https://play.golang.org/p/Ega9qgD4Qz .
|
||
|
|
func Match(pattern, name string) (matched bool) {
|
||
|
|
if pattern == "" {
|
||
|
|
return name == pattern
|
||
|
|
}
|
||
|
|
if pattern == "*" {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
// Does extended wildcard '*' and '?' match.
|
||
|
|
return deepMatchRune([]rune(name), []rune(pattern), false)
|
||
|
|
}
|
||
|
|
|
||
|
|
func deepMatchRune(str, pattern []rune, simple bool) bool {
|
||
|
|
for len(pattern) > 0 {
|
||
|
|
switch pattern[0] {
|
||
|
|
default:
|
||
|
|
if len(str) == 0 || str[0] != pattern[0] {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
case '?':
|
||
|
|
if len(str) == 0 && !simple {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
case '*':
|
||
|
|
return deepMatchRune(str, pattern[1:], simple) ||
|
||
|
|
(len(str) > 0 && deepMatchRune(str[1:], pattern, simple))
|
||
|
|
}
|
||
|
|
str = str[1:]
|
||
|
|
pattern = pattern[1:]
|
||
|
|
}
|
||
|
|
return len(str) == 0 && len(pattern) == 0
|
||
|
|
}
|