/
json.go
97 lines (80 loc) · 2.35 KB
/
json.go
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package export
import (
"bytes"
"encoding/json"
"fmt"
"github.com/geziyor/geziyor/internal"
"os"
)
// JSONLine exports response data as JSON streaming file
type JSONLine struct {
FileName string
EscapeHTML bool
Prefix string
Indent string
}
// Export exports response data as JSON streaming file
func (e *JSONLine) Export(exports chan interface{}) error {
// Create or append file
file, err := os.OpenFile(internal.DefaultString(e.FileName, "out.json"), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
return fmt.Errorf("output file creation error: %w", err)
}
defer file.Close()
encoder := json.NewEncoder(file)
encoder.SetEscapeHTML(e.EscapeHTML)
encoder.SetIndent(e.Prefix, e.Indent)
// Export data as responses came
for res := range exports {
if err := encoder.Encode(res); err != nil {
internal.Logger.Printf("JSON encoding error on exporter: %v\n", err)
}
}
return nil
}
// JSON exports response data as JSON
type JSON struct {
FileName string
EscapeHTML bool
}
// Export exports response data as JSON
func (e *JSON) Export(exports chan interface{}) error {
// Create or append file
file, err := os.OpenFile(internal.DefaultString(e.FileName, "out.json"), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
return fmt.Errorf("output file creation error: %w", err)
}
defer file.Close()
_, err = file.Write([]byte("[\n"))
if err != nil {
return fmt.Errorf("file write error: %w", err)
}
// Export data as responses came
for res := range exports {
data, err := jsonMarshalLine(res, e.EscapeHTML)
if err != nil {
internal.Logger.Printf("JSON encoding error on exporter: %v\n", err)
continue
}
_, err = file.Write(data)
if err != nil {
return fmt.Errorf("file write error: %w", err)
}
}
_, err = file.Write([]byte("]\n"))
if err != nil {
return fmt.Errorf("file write error: %w", err)
}
return nil
}
// jsonMarshalLine adds tab and comma around actual data
func jsonMarshalLine(t interface{}, escapeHTML bool) ([]byte, error) {
buffer := &bytes.Buffer{}
encoder := json.NewEncoder(buffer)
encoder.SetEscapeHTML(escapeHTML)
buffer.Write([]byte(" ")) // Tab char
err := encoder.Encode(t) // Write actual data
buffer.Truncate(buffer.Len() - 1) // Remove last newline char
buffer.Write([]byte(",\n")) // Write comma and newline char
return buffer.Bytes(), err
}