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// Copyright 2020 Nick White.
// Use of this source code is governed by the GPLv3
// license that can be found in the LICENSE file.
// getallhocrs downloads every 'best' file from a set of OCRed books
// stored on cloud infrastructure
package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
"rescribe.xyz/bookpipeline"
)
const usage = `Usage: getallhocrs
Downloads every 'hocr' file.
`
type Pipeliner interface {
Init() error
Download(bucket string, key string, fn string) error
ListObjects(bucket string, prefix string) ([]string, error)
ListObjectPrefixes(bucket string) ([]string, error)
Log(v ...interface{})
WIPStorageId() string
}
func main() {
flag.Usage = func() {
fmt.Fprintf(flag.CommandLine.Output(), usage)
flag.PrintDefaults()
}
flag.Parse()
verboselog := log.New(os.Stdout, "", log.LstdFlags)
var conn Pipeliner
conn = &bookpipeline.AwsConn{Region: "eu-west-2", Logger: verboselog}
err := conn.Init()
if err != nil {
log.Fatalln("Error setting up cloud connection:", err)
}
conn.Log("Getting list of all books")
prefixes, err := conn.ListObjectPrefixes(conn.WIPStorageId())
if err != nil {
log.Fatalln("Failed to get list of prefixes", err)
}
for _, p := range prefixes {
conn.Log("Getting list of files for book", p)
objs, err := conn.ListObjects(conn.WIPStorageId(), p)
if err != nil {
log.Fatalln("Failed to get list of files", err)
}
err = os.MkdirAll(p, 0755)
if err != nil {
log.Fatalln("Failed to make directory", err)
}
conn.Log("Downloading hocrs from book", p)
for _, o := range objs {
if !strings.HasSuffix(o, ".hocr") {
continue
}
// skip already downloaded items
_, err = os.Stat(o)
if err == nil || os.IsExist(err) {
log.Println(" Skipping already complete download of", o)
continue
}
log.Println(" Downloading", o)
err = conn.Download(conn.WIPStorageId(), o, o)
if err != nil {
log.Fatalln("Failed to download file", o, err)
}
}
}
}
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