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|
package main
import (
"bufio"
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path"
"strings"
"time"
"github.com/adrg/xdg"
"gitlab.com/internetarchive/refcat/skate"
)
var (
sleep = flag.Duration("s", 200*time.Millisecond, "sleep between requests")
cacheDir = flag.String("c", path.Join(xdg.CacheHome, "skate-cdx"), "cache dir")
bestEffort = flag.Bool("B", false, "best effort")
writeJson = flag.Bool("j", false, "json output")
quiet = flag.Bool("q", false, "no logging")
)
func main() {
flag.Parse()
var r io.Reader = os.Stdin
if flag.NArg() > 0 {
f, err := os.Open(flag.Arg(0))
if err != nil {
log.Fatal(err)
}
defer f.Close()
r = f
}
if *quiet {
log.SetOutput(ioutil.Discard)
}
var (
cache = skate.Cache{Dir: *cacheDir}
br = bufio.NewReader(r)
i int
)
for {
line, err := br.ReadString('\n')
if err == io.EOF {
break
}
if err != nil {
log.Fatal(err)
}
line = strings.TrimSpace(line)
if !cache.Has(line) {
_, b, err := skate.LookupCDX(line)
if err != nil {
if *bestEffort {
log.Println(err)
continue
} else {
log.Fatal(err)
}
}
if err := cache.Set(line, b); err != nil {
log.Fatal(err)
}
time.Sleep(*sleep)
}
b, err := cache.Get(line)
if err != nil {
log.Fatal(err)
}
rows, err := skate.ParseCDX(b)
if err != nil {
if *bestEffort {
log.Println(err)
continue
} else {
log.Fatal(err)
}
}
if *writeJson {
cdxSummary := rows.Summary()
var dummy = struct {
Summary *skate.CDXSummary `json:"summary"`
NumRows int `json:"numRows"`
Line string `json:"line"`
}{
Summary: cdxSummary,
NumRows: len(rows),
Line: line,
}
b, err := json.Marshal(dummy)
if err != nil {
log.Fatal(err)
}
fmt.Println(string(b))
} else {
fmt.Printf("[%05d] % 10d %s %s\n", i, len(rows), rows.Summary(), line)
}
i++
}
}
|
