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read.go
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read.go
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package warc
import (
"bufio"
"bytes"
"compress/gzip"
"io"
"net/http"
"os"
"path/filepath"
)
// read an http response from a WARC file
// if filename has .gz suffix, gzip is assumed
func ReadFile(filename string) (*http.Response, error) {
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
var in io.Reader
if filepath.Ext(filename) == ".gz" {
gin, err := gzip.NewReader(f)
if err != nil {
return nil, err
}
defer gin.Close()
in = gin
} else {
in = f
}
return Read(in)
}
// read an http response from an io.Reader
func Read(in io.Reader) (*http.Response, error) {
warcReader := NewReader(in)
for {
// fmt.Printf("WARC\n")
rec, err := warcReader.ReadRecord()
if err != nil {
return nil, err
}
if rec.Header.Get("Warc-Type") != "response" {
continue
}
//reqURL := rec.Header.Get("Warc-Target-Uri")
// parse response, grab raw html
rdr := bufio.NewReader(bytes.NewReader(rec.Block))
response, err := http.ReadResponse(rdr, nil)
return response, err
}
}