package regexp
Golang regexp.FindAllIndex() and FindIndex() functions usage example.
package main
import (
"fmt"
"regexp"
)
func main() {
// regular expression pattern
regE := regexp.MustCompile("/oid/([\\d]+)/")
// simulate a search
// first convert string to byte for Find() function
searchByte := []byte("/oid/1/something_else/oid/2/")
matchSlice := regE.FindIndex(searchByte)
for _, v := range matchSlice {
// found /oid/1/
// and return location of the leftmost match
fmt.Printf("position :[%v]\n", v)
}
// ---- find all index
matchAllSlice := regE.FindAllIndex(searchByte, 500)
for _, v := range matchAllSlice {
// found /oid/1/ and /oid/2
// and return locations of the all matches
fmt.Printf("position :[%v]\n", v)
}
}
Output :
position :[0]
position :[7]
position :[[0 7]]
position :[[21 28]]
References :
http://golang.org/pkg/regexp/#Regexp.FindIndex
http://golang.org/pkg/regexp/#Regexp.FindAllIndex
