gh-ost/vendor/github.com/openark/golib/sqlutils/dialect.go

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/*
Copyright 2017 GitHub 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 sqlutils
import (
"regexp"
"strings"
)
type regexpMap struct {
r *regexp.Regexp
replacement string
}
func (this *regexpMap) process(text string) (result string) {
return this.r.ReplaceAllString(text, this.replacement)
}
func rmap(regexpExpression string, replacement string) regexpMap {
return regexpMap{
r: regexp.MustCompile(regexpSpaces(regexpExpression)),
replacement: replacement,
}
}
func regexpSpaces(statement string) string {
return strings.Replace(statement, " ", `[\s]+`, -1)
}
func applyConversions(statement string, conversions []regexpMap) string {
for _, rmap := range conversions {
statement = rmap.process(statement)
}
return statement
}