chore: add _example/main.go

_example/main.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"regexp"
+	"strings"
+
+	"github.com/nekrassov01/access-log-parser"
+)
+
+var (
+	fields   = []string{"field1", "field2", "field3"}
+	patterns = []*regexp.Regexp{regexp.MustCompile("([!-~]+) ([!-~]+) ([!-~]+)")}
+	sample   = `aaa bbb ccc
+xxx yyy zzz
+111 222 333`
+)
+
+func main() {
+	p := parser.New(fields, patterns)
+	out, err := p.Parse(strings.NewReader(sample), nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(strings.Join(out.Data, "\n"))
+	fmt.Println(out.Metadata)
+}
+
+/*
+{"index":1,"field1":"aaa","field2":"bbb","field3":"ccc"}
+{"index":2,"field1":"xxx","field2":"yyy","field3":"zzz"}
+{"index":3,"field1":"111","field2":"222","field3":"333"}
+{"total":3,"matched":3,"unmatched":0,"skipped":0,"source":"","errors":null}
+*/