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@timchunght
Forked from ryoco/.gitignore
Last active October 22, 2015 06:48
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pdf to image with Go
/*.swp
/*.pdf
/*.png
.DS_Store
brew install imagemagick
brew install ghostscript
package main
import (
"flag"
"fmt"
"github.com/gographics/imagick/imagick"
"io/ioutil"
"log"
"os"
"strings"
)
func main() {
// set args
flag.Parse()
args := flag.Args()
// set directories
readdir, writedir := getRWdir(args)
pdfFiles := getPdfLists(readdir)
os.Mkdir(writedir, 0777)
// convert pdf to img
for _, filename := range pdfFiles {
fmt.Println(filename)
filename := filename + "[0]"
imgname := writedir + "/" + strings.Replace(filename, "pdf[0]", "png", 1)
if _, err := os.Stat(imgname); os.IsNotExist(err) {
fmt.Println("processing...")
convertPdfToImg(filename, imgname)
}
}
}
func getRWdir(args []string) (string, string) {
r := "./"
w := "./img"
if len(args) > 0 {
r = args[0]
}
if len(args) > 1 {
w = args[1]
}
return r, w
}
func getPdfLists(readdir string) []string {
files, _ := ioutil.ReadDir(readdir)
filenames := []string{}
for _, f := range files {
filename := f.Name()
if strings.HasSuffix(filename, ".pdf") {
filenames = append(filenames, filename)
}
}
return filenames
}
func convertPdfToImg(filename string, imgname string) {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
re := mw.ReadImage(filename)
if re != nil {
log.Fatal(re)
}
defer mw.Destroy()
mwc := mw.Clone()
// mwc.AdaptiveResizeImage(30, 30)
fmt.Println("png file created: " + imgname)
w := mwc.WriteImage(imgname)
if w != nil {
log.Fatal(w)
}
}
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