github.com/qiuhoude/go-web@v0.0.0-20220223060959-ab545e78f20d/prepare/06_xmljson/reg/expand/expand.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"regexp"
     6  )
     7  
     8  func main() {
     9  	src := []byte(`
    10  		call hello alice
    11  		hello bob
    12  		call hello eve
    13  		`)
    14  	re := regexp.MustCompile(`(?m)(call)\s+(?P<cmd>\w+)\s+(?P<arg>.+)\s*$`)
    15  	var res []byte
    16  	for _, s := range re.FindAllSubmatchIndex(src, -1) {
    17  		res = re.Expand(res, []byte("$cmd('$arg')\n"), src, s)
    18  	}
    19  	fmt.Println(string(res))
    20  }