removed obsolete plugin

plugin-libreoffice/plugin.go

@@ -1,288 +0,0 @@
-// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
-//
-// This software (Documize Community Edition) is licensed under
-// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
-//
-// You can operate outside the AGPL restrictions by purchasing
-// Documize Enterprise Edition and obtaining a commercial license
-// by contacting <sales@documize.com>.
-//
-// https://documize.com
-
-// Package main provides a simple Documize plugin for document conversions using libreoffice.
-package main
-
-import (
-	"bytes"
-	"encoding/base64"
-	"errors"
-	"flag"
-	"fmt"
-	"io/ioutil"
-	"net"
-	"net/rpc"
-	"net/rpc/jsonrpc"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime"
-	"strings"
-	"sync"
-	"time"
-	"unicode"
-	"unicode/utf8"
-
-	api "github.com/documize/community/core/convapi"
-)
-
-var cmdmtx sync.Mutex // enforce only one conversion at a time
-
-// LibreOffice provides a peg on which to hang the Convert method.
-type LibreOffice struct{}
-
-var dir *os.File
-var outputDir string
-
-func init() {
-	tempDir := os.TempDir()
-	if !strings.HasSuffix(tempDir, string(os.PathSeparator)) {
-		tempDir += string(os.PathSeparator)
-	}
-	outputDir = tempDir + "documize-plugin-libreoffice"
-	err := os.MkdirAll(outputDir, os.ModePerm)
-	if err != nil {
-		panic(err)
-	}
-}
-
-func createTempDir() *os.File {
-	fmt.Println("create temp dir")
-	err := os.Mkdir(outputDir, 0777) // make the dir if non-existent, TODO filemode
-	if err != nil {
-		//fmt.Println("unable to create temp dir")
-		panic(err)
-	}
-	dir, err = os.Open(outputDir)
-	if err != nil {
-		//fmt.Println("unable to open created temp dir")
-		panic(err)
-	}
-	return dir
-}
-
-func removePrevTempFiles(dir *os.File) error {
-	fin, err := dir.Readdirnames(-1)
-	if err != nil {
-		return err
-	}
-	for _, nam := range fin { // remove any previous temporary files
-		target := outputDir + string(os.PathSeparator) + nam
-		//fmt.Println("delete temp file: " + target)
-		err = os.Remove(target)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func runLibreOffice(inPath string) error {
-	var err error
-	var cmd = "soffice"
-	switch runtime.GOOS {
-	case "darwin": // may not be in the path
-		cmd = "/Applications/LibreOffice.app/Contents/MacOS/soffice"
-	case "windows": // TODO
-	}
-	cmd, err = exec.LookPath(cmd)
-	if err != nil {
-		return err
-	}
-
-	args := []string{"--headless",
-		"--convert-to", "html", // "html:XHTML Writer File:UTF8",
-		"--outdir", outputDir, inPath}
-
-	fmt.Println("libreoffice args:", args)
-
-	ecmd := exec.Command(cmd, args...)
-	var outBuf, errBuf bytes.Buffer
-	ecmd.Stdout, ecmd.Stderr = &outBuf, &errBuf
-	over := make(chan error, 1)
-	go func() {
-		if e := ecmd.Start(); e != nil {
-			over <- e
-		} else {
-			over <- ecmd.Wait()
-		}
-	}()
-	select {
-	case err = <-over:
-		if err != nil {
-			return errors.New(string(outBuf.Bytes()) + string(errBuf.Bytes()) + err.Error())
-		}
-	case <-time.After(2 * time.Minute):
-		ke := ""
-		if runtime.GOOS != "windows" { // Process is not available on windows
-			err = ecmd.Process.Kill()
-			if err != nil {
-				ke = ", kill error: " + err.Error()
-			}
-		}
-		return errors.New("libreoffice.Convert() cancelled via timeout" + ke)
-	}
-	return nil
-}
-
-// Convert converts a file into the Countersoft Documize format.
-func (file *LibreOffice) Convert(r api.DocumentConversionRequest, reply *api.DocumentConversionResponse) error {
-	var err error
-
-	cmdmtx.Lock() // enforce only one conversion at a time
-	defer cmdmtx.Unlock()
-
-	dir, err = os.Open(outputDir)
-	if err != nil {
-		dir = createTempDir()
-	}
-	defer func() {
-		if e := dir.Close(); e != nil {
-			fmt.Fprintln(os.Stderr, "Error closing temp dir: "+e.Error())
-		}
-	}()
-
-	err = removePrevTempFiles(dir)
-	if err != nil {
-		return err
-	}
-
-	_, inFileX := filepath.Split(r.Filename)
-	inFile := fixName(inFileX)
-	if inFile == "" {
-		return errors.New("no filename")
-	}
-
-	xtn := filepath.Ext(inFile)
-	if xtn == "" {
-		return errors.New("invalid filename: " + inFile)
-	}
-
-	inPath := outputDir + string(os.PathSeparator) + inFile
-	fmt.Println("writing data to: " + inPath)
-	if err = ioutil.WriteFile(inPath, r.Filedata, 0777); err != nil {
-		return err
-	}
-
-	err = runLibreOffice(inPath)
-	if err != nil {
-		return err
-	}
-
-	outPath := strings.TrimSuffix(inPath, xtn) + ".html"
-	fmt.Println("output file: " + outPath)
-	reply.PagesHTML, err = ioutil.ReadFile(outPath)
-	if err != nil {
-		return err
-	}
-	fmt.Printf("%d bytes read from: %s\n", len(reply.PagesHTML), outPath)
-
-	incorporateImages(reply)
-
-	return ioutil.WriteFile(outputDir+string(os.PathSeparator)+"debug.html", reply.PagesHTML, 0666)
-}
-
-func incorporateImages(reply *api.DocumentConversionResponse) {
-	dir, err := os.Open(outputDir)
-	if err == nil {
-		names, err := dir.Readdirnames(-1)
-		if err == nil {
-			for _, nam := range names {
-				//fmt.Println("Found file " + nam)
-				switch pic := strings.ToLower(filepath.Ext(nam)[1:]); pic {
-				case "jpg", "gif", "png", "webp": // TODO others?
-					//fmt.Println("Found picture file " + nam)
-					enam := fixName(nam)
-					buf, err := ioutil.ReadFile(outputDir + string(os.PathSeparator) + nam)
-					if err == nil {
-						enc := base64.StdEncoding.EncodeToString(buf)
-						benam := []byte(`<img src="` + enam + `"`)
-						split := bytes.Split(reply.PagesHTML, benam)
-						rep := []byte(`<img src="data:image/` + pic + `;base64,` + enc + `"`)
-						/*
-							fmt.Println("DEBUG read picture file ", nam,
-								"size", len(buf),
-								"benam", string(benam),
-								"len(split)", len(split),
-								"replacement size", len(rep))
-						*/
-						if len(rep)*len(split) > 1000000 {
-							fmt.Println("Too large a file increase to replace (>1Mb)")
-						} else {
-							reply.PagesHTML = bytes.Join(split, rep)
-						}
-					}
-				}
-			}
-		}
-	}
-}
-
-var port string
-
-func init() {
-	flag.StringVar(&port, "port", "", "the port to listen on")
-}
-
-func main() {
-	var err error
-
-	fmt.Println("Documize plugin-libreoffice starting up")
-
-	fmt.Println("outputDir:" + outputDir)
-
-	// register all the services that we accept
-	fileConverter := new(LibreOffice)
-	err = rpc.Register(fileConverter)
-	if err != nil {
-		panic(err)
-	}
-
-	flag.Parse()
-	if port == "" {
-		fmt.Fprintln(os.Stderr, "no port specified, please use the '-port' flag")
-		return
-	}
-
-	// set up the server
-	listener, err := net.Listen("tcp", ":"+port)
-	if err != nil {
-		panic(err)
-	}
-
-	// start server
-	fmt.Println("Documize plugin-libreoffice server up on", listener.Addr())
-
-	for {
-		conn, err := listener.Accept()
-		if err != nil {
-			panic(err)
-		}
-
-		go jsonrpc.ServeConn(conn) // using JSON encoding
-	}
-}
-
-func fixName(s string) string {
-	ret := ""
-	for _, r := range s {
-		if utf8.RuneLen(r) > 1 ||
-			unicode.IsSpace(r) ||
-			unicode.IsSymbol(r) ||
-			r == '%' {
-			ret += fmt.Sprintf("%%%x", r)
-		} else {
-			ret += string(r)
-		}
-	}
-	return ret
-}