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// Copyright 2019 Nick White.
// Use of this source code is governed by the GPLv3
// license that can be found in the LICENSE file.
package pipeline
import (
"bufio"
"fmt"
"os"
"path/filepath"
"strings"
)
func DownloadBestPages(dir string, name string, conn Downloader) error {
key := filepath.Join(name, "best")
fn := filepath.Join(dir, "best")
err := conn.Download(conn.WIPStorageId(), key, fn)
if err != nil {
return fmt.Errorf("Failed to download 'best' file: %v", err)
}
f, err := os.Open(fn)
if err != nil {
return fmt.Errorf("Failed to open best file: %v", err)
}
defer f.Close()
s := bufio.NewScanner(f)
for s.Scan() {
key = filepath.Join(name, s.Text())
fn = filepath.Join(dir, s.Text())
conn.Log("Downloading file", key)
err = conn.Download(conn.WIPStorageId(), key, fn)
if err != nil {
return fmt.Errorf("Failed to download file %s: %v", key, err)
}
}
return nil
}
func DownloadBestPngs(dir string, name string, conn Downloader) error {
key := filepath.Join(name, "best")
fn := filepath.Join(dir, "best")
err := conn.Download(conn.WIPStorageId(), key, fn)
if err != nil {
return fmt.Errorf("Failed to download 'best' file: %v", err)
}
f, err := os.Open(fn)
if err != nil {
return fmt.Errorf("Failed to open best file: %v", err)
}
defer f.Close()
s := bufio.NewScanner(f)
for s.Scan() {
imgname := strings.Replace(s.Text(), ".hocr", ".png", 1)
key = filepath.Join(name, imgname)
fn = filepath.Join(dir, imgname)
conn.Log("Downloading file", key)
err = conn.Download(conn.WIPStorageId(), key, fn)
if err != nil {
return fmt.Errorf("Failed to download file %s: %v", key, err)
}
}
return nil
}
func DownloadPdfs(dir string, name string, conn Downloader) error {
anydone := false
errmsg := ""
for _, suffix := range []string{".colour.pdf", ".binarised.pdf"} {
key := filepath.Join(name, name+suffix)
fn := filepath.Join(dir, name+suffix)
err := conn.Download(conn.WIPStorageId(), key, fn)
if err != nil {
_ = os.Remove(fn)
errmsg += fmt.Sprintf("Failed to download PDF %s: %v\n", key, err)
} else {
anydone = true
}
}
if anydone == false {
return fmt.Errorf("No PDFs could be downloaded, error(s): %v", errmsg)
}
return nil
}
func DownloadAnalyses(dir string, name string, conn Downloader) error {
for _, a := range []string{"conf", "graph.png"} {
key := filepath.Join(name, a)
fn := filepath.Join(dir, a)
err := conn.Download(conn.WIPStorageId(), key, fn)
// ignore errors with graph.png, as it will not exist in the case of a 1 page book
if err != nil && a != "graph.png" {
return fmt.Errorf("Failed to download analysis file %s: %v", key, err)
}
}
return nil
}
func DownloadAll(dir string, name string, conn DownloadLister) error {
objs, err := conn.ListObjects(conn.WIPStorageId(), name)
if err != nil {
return fmt.Errorf("Failed to get list of files for book %s: %v", name, err)
}
for _, i := range objs {
base := filepath.Base(i)
fn := filepath.Join(dir, base)
conn.Log("Downloading", i)
err = conn.Download(conn.WIPStorageId(), i, fn)
if err != nil {
return fmt.Errorf("Failed to download file %s: %v", i, err)
}
}
return nil
}
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