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authorNick White <git@njw.name>2019-10-31 15:06:50 +0000
committerNick White <git@njw.name>2019-10-31 15:06:50 +0000
commitb9aeada4e573643985d6df03f672f2c2fec169d8 (patch)
tree6329f8a4bc5c1fee98655c306b30a555a361495b /cmd
parent0f10452d7c184096ecc98475c563ea85fd07bbf5 (diff)
PDF: add functionality to use "best" file if it exists
Diffstat (limited to 'cmd')
-rw-r--r--cmd/pdfbook/main.go88
1 files changed, 71 insertions, 17 deletions
diff --git a/cmd/pdfbook/main.go b/cmd/pdfbook/main.go
index 4dc2c93..bdb486d 100644
--- a/cmd/pdfbook/main.go
+++ b/cmd/pdfbook/main.go
@@ -1,12 +1,14 @@
package main
import (
+ "bufio"
"flag"
"fmt"
"log"
"os"
"path"
"path/filepath"
+ "sort"
"strings"
"rescribe.xyz/bookpipeline"
@@ -26,31 +28,71 @@ func pxToPt(i int) float64 {
return float64(i) / pageWidth
}
+// imgPath returns an appropriate path for the image that
+// corresponds with the hocrpath
+func imgPath(hocrpath string, colour bool) string {
+ d := path.Dir(hocrpath)
+ name := path.Base(hocrpath)
+ nosuffix := strings.TrimSuffix(name, ".hocr")
+ imgname := ""
+ if colour {
+ p := strings.SplitN(name, "_bin", 2)
+ if len(p) > 1 {
+ imgname = p[0] + ".jpg"
+ } else {
+ imgname = nosuffix + ".jpg"
+ }
+ } else {
+ imgname = nosuffix + ".png"
+ }
+ return path.Join(d, imgname)
+}
+
+// addBest adds the pages in dir/best to a PDF
+func addBest(dir string, pdf Pdfer, colour bool) error {
+ f, err := os.Open(path.Join(dir, "best"))
+ if err != nil {
+ log.Fatalln("Failed to open best file", err)
+ }
+ defer f.Close()
+
+ s := bufio.NewScanner(f)
+ var files []string
+ for s.Scan() {
+ fn := s.Text()
+ if path.Ext(fn) != ".hocr" {
+ continue
+ }
+ files = append(files, fn)
+ }
+ sort.Strings(files)
+
+ for _, f := range files {
+ hocrpath := path.Join(dir, f)
+ img := imgPath(hocrpath, colour)
+ err := pdf.AddPage(img, hocrpath)
+ if err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+// walker walks each hocr file in a directory and adds a page to
+// the pdf for each one.
func walker(pdf Pdfer, colour bool) filepath.WalkFunc {
return func(fpath string, info os.FileInfo, err error) error {
if info.IsDir() {
return nil
}
- if !strings.HasSuffix(fpath, ".hocr") {
+ if path.Ext(fpath) != ".hocr" {
return nil
}
- imgpath := ""
- if colour {
- p := strings.SplitN(path.Base(fpath), "_bin", 2)
- if len(p) > 1 {
- imgpath = path.Join(path.Dir(fpath), p[0] + ".jpg")
- } else {
- imgpath = strings.TrimSuffix(fpath, ".hocr") + ".jpg"
- }
- } else {
- imgpath = strings.TrimSuffix(fpath, ".hocr") + ".png"
- }
- return pdf.AddPage(imgpath, fpath)
+ return pdf.AddPage(imgPath(fpath, colour), fpath)
}
}
func main() {
- // TODO: handle best
// TODO: probably take flags to resize / change quality in due course
colour := flag.Bool("c", false, "colour")
flag.Usage = func() {
@@ -64,12 +106,24 @@ func main() {
return
}
+ _, err := os.Stat(path.Join(flag.Arg(0), "best"))
+ if err != nil && !os.IsNotExist(err) {
+ log.Fatalln("Failed to stat best", err)
+ }
+
pdf := new(bookpipeline.Fpdf)
pdf.Setup()
- err := filepath.Walk(flag.Arg(0), walker(pdf, *colour))
- if err != nil {
- log.Fatalln("Failed to walk", flag.Arg(0), err)
+ if os.IsNotExist(err) {
+ err = filepath.Walk(flag.Arg(0), walker(pdf, *colour))
+ if err != nil {
+ log.Fatalln("Failed to walk", flag.Arg(0), err)
+ }
+ } else {
+ err = addBest(flag.Arg(0), pdf, *colour)
+ if err != nil {
+ log.Fatalln("Failed to add best pages", err)
+ }
}
err = pdf.Save(flag.Arg(1))