func main() {
if len(os.Args) != 2 {
usage()
return
}
s := os.Args[1]
// Creates the query
query, err := charlatan.QueryFromString(s)
if err != nil {
fmt.Println(">>> ", err)
return
}
reader, err := os.Open(query.From())
if err != nil {
fmt.Printf(">>> Error opening %s: %v\n", query.From(), err)
return
}
executeRequest(csv.NewReader(reader), query)
}
func runTest() (string, error) {
s, err := generateQueryString()
if err != nil {
log.Fatalf("Query generation error: %v", err)
}
_, err = charlatan.QueryFromString(s)
return s, err
}
func main() {
var limit int64
if len(os.Args) != 2 {
usage()
}
query, err := charlatan.QueryFromString(os.Args[1])
if err != nil {
fatalf("Error: %v\n", err)
}
reader, err := os.Open(query.From())
if err != nil {
fatalf("Error: %v\n", err)
}
defer reader.Close()
decoder := json.NewDecoder(reader)
hasLimit := query.HasLimit()
if hasLimit {
limit = query.Limit()
if limit <= 0 {
return
}
}
line := 0
offset := query.StartingAt()
for {
r, err := record.NewJSONRecordFromDecoder(decoder)
// end of file
if err == io.EOF {
return
}
// unknown error
if err != nil {
fatalf("Error at line %d: %v\n", line, err)
}
match, err := query.Evaluate(r)
if err != nil {
fatalf("Error while evaluating the query at line %d: %v\n", line, err)
}
if !match {
continue
}
offset--
if offset > 0 {
continue
}
line++
// extract the fields
values, err := query.FieldsValues(r)
if err != nil {
fatalf("Error while extracting the fields at line %d: %v\n", line, err)
}
fmt.Println("# ", values)
if hasLimit {
limit--
if limit <= 0 {
break
}
}
}
}
