PDFOffice_Windows_exe/PDF Office/Helper/ConverterHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ComPDFKit_Conversion.Converter;
using System.Diagnostics;
using System.IO;
using Microsoft.AppCenter.Crashes.Ingestion.Models;
using static Dropbox.Api.Sharing.ListFileMembersIndividualResult;
using ComPDFKit_Conversion.Options;
using PDF_Office.CustomControl;
using Exception = System.Exception;
using ImageMagick;
using System.IO.Compression;

namespace PDF_Office.Helper
{
    public static class ConverterHelper
    {
        public static CPDFConverterWord wordConverter = null;
        public static CPDFConverterExcel excelConverter = null;
        public static CPDFConverterPPT pptConverter = null;
        public static CPDFConverterTxt txtConverter = null;
        public static CPDFConverterCsv csvConverter = null;
        public static CPDFConverterImg imgConverter = null;
        public static CPDFConverterRTF rtfConverter = null;
        public static CPDFConverterHTML htmlConverter = null;
        public static async Task<bool> WordConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword, CPDFConvertWordOptions wordOptions = null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();
                wordConverter = new CPDFConverterWord(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                string filename = GetFileNameAddSuffix(outputFolder, outputFileName, ".docx");
                result = await Task.Run(() => wordConverter.Convert(outputFolder, ref outputFileName, wordOptions, pageArray, ref error, getProgress));
                if (result)
                {
                       CommonHelper.ShowFileBrowser(outputFileName.Replace("/","\\"));
                }
            }
            
            catch (Exception ex)
            {

            }
            return result;
        }

        public static async Task<bool> PPTConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword, CPDFConvertPPTOptions pptOptions=null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();

                pptConverter = new CPDFConverterPPT(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;

                string filename = GetFileNameAddSuffix(outputFolder, outputFileName, ".ppt");

                result = await Task.Run(() => pptConverter.Convert(outputFolder, ref outputFileName, pptOptions,pageArray, ref error, getProgress));
                if (result)
                {
                    CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static async Task<bool> ExcelConvert(string inputpath, string outputpath,OnProgress getProgress , List<int> pageIndexLists, string pawssword,CPDFConvertExcelOptions ExcelOption)
        {
            bool result = false;
            try
            {
                excelConverter = new CPDFConverterExcel(inputpath,pawssword);
                int[] pageArray = pageIndexLists.ToArray();

                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                 result = await Task.Run(() => excelConverter.Convert(outputFolder, ref outputFileName, ExcelOption, pageArray, ref error, getProgress));
                if (result)
                {
                    if (File.Exists(outputFileName))
                        CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                    else if (outputFileName == "NoTable")
                        MessageBoxEx.Show("No Table");
                }
               
                   
            }
            catch (Exception ex)
           {

               }
            return result;
        }

        //public static async Task<bool> TableConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword)
        //{
        //    bool result = false;
        //    try
        //    {
        //        int[] pageArray = pageIndexLists.ToArray();
        //        tableConverter = new CPDFConverterTable(inputpath, pawssword);
        //        string outputFolder = outputpath;
        //        string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
        //        ConvertError error = ConvertError.ERR_UNKNOWN;
        //        string filename = GetFileNameAddSuffix(outputFolder, outputFileName, ".xlsx");
        //        result = await Task.Run(() => tableConverter.Convert(outputFolder, ref outputFileName, pageArray, ref error, getProgress));

        //    }
        //    catch (Exception ex)
        //    {

        //    }
        //    return result;
        //}

        public static async Task<bool> CSVConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword, CPDFConvertCsvOptions csvOptions =null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();

                csvConverter = new CPDFConverterCsv(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                string filename = GetFileNameAddSuffix(outputFolder, outputFileName, ".csv");
                result = await Task.Run(() => csvConverter.Convert(outputFolder, ref outputFileName, csvOptions, pageArray, ref error, getProgress));
                if (result)
                {
                    CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static async Task<bool> TxtConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword,CPDFConvertTxtOptions txtOptions =null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();

                txtConverter = new CPDFConverterTxt(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                string filename = GetFileNameAddSuffix(outputFolder, outputFileName, ".txt");
                result = await Task.Run(() => txtConverter.Convert(outputFolder, ref outputFileName, txtOptions, pageArray, ref error, getProgress));
                if (result)
                {
                    CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static void ImageMagickPDFToImage(string imageType,string filePath,string outputFolder,string outputFileName) {
            ZipFile.ExtractToDirectory(filePath, outputFolder + "\\" + outputFileName);
            var files = Directory.GetFiles(outputFolder + "\\" + outputFileName, "*.png");
            int i=0;
            var images = new MagickImageCollection();
            foreach (var file in files)
            {
                //pdf整体转为gif，将.gifoff改为.gif
                Trace.WriteLine(file);
                if (imageType == ".gifoff") {
                    images.Add(file);
                    images[i].AnimationDelay = 100; // in this example delay is 1000ms/1sec
                    images[i].Flip();
                }
                
                using (var image = new MagickImage(file))
                {
                    if (imageType != ".gifoff")
                    {
                    //Save frame as jpg
                    //image.Format = MagickFormat.Jp2;
                    image.Write(file.Remove(file.LastIndexOf(".png"), 4) + imageType);
                    }
                    // 删除该文件
                    System.IO.File.Delete(file);
                }
            }
            if (imageType == ".gifoff")
            {
                // Optionally reduce colors
                var settings = new QuantizeSettings();
                settings.Colors = 256;
                images.Quantize(settings);

                // Optionally optimize the images (images should have the same size).
                images.Optimize();

                // Save gif
                int fileIndex = 1;
                if (File.Exists(outputFolder + "\\" + outputFileName + ".gif"))
                {
                    while (fileIndex >= 1)
                    {
                        if (!File.Exists(outputFolder + "\\" + outputFileName + "_" + fileIndex + ".gif"))
                        {
                            images.Write(outputFolder + "\\" + outputFileName + ".gif");
                            fileIndex = -1;
                        }
                        fileIndex++;
                    }
                }
                else { images.Write(outputFolder + "\\" + outputFileName + ".gif"); }
               
            }
            else {
                int fileIndex = 1;
                
                if (File.Exists(outputFolder + "\\" + outputFileName + ".zip"))
                {
                    while (fileIndex>=1) {
                        if (!File.Exists(outputFolder + "\\" + outputFileName + "_" + fileIndex + ".zip"))
                        {
                            ZipFile.CreateFromDirectory(outputFolder + "\\" + outputFileName, outputFolder + "\\" + outputFileName + "_" + fileIndex + ".zip");
                            fileIndex=-1;
                        }
                        fileIndex++;
                    }
                }
                else { ZipFile.CreateFromDirectory(outputFolder + "\\" + outputFileName, outputFolder + "\\" + outputFileName + ".zip"); }
                
            }
            DirectoryInfo di = new DirectoryInfo(outputFolder + "\\" + outputFileName);
            di.Delete(true);


        }       

        public static async Task<bool> ImgConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists,string pawssword,string imageType=".png", CPDFConvertImgOptions imgOptions = null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();

                imgConverter = new CPDFConverterImg(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                if (imageType == ".png" || imageType == ".jpg")
                {
                    result = await Task.Run(() => imgConverter.Convert(outputFolder, ref outputFileName, imgOptions, pageArray, ref error, getProgress));
                }
                else
                { //创建缓存文件夹
                   
                    string folderPath = Path.Combine(App.CurrentPath, "ConverterImg");
                    //有可能因为其他原因存在同名文件，导致创建文件夹失败，需要先删除同名文件
                    //保险措施(猜测)
                    if (File.Exists(folderPath))
                    {
                        File.Delete(folderPath);
                    }

                    DirectoryInfo tempfolder = new DirectoryInfo(folderPath);
                    if (!tempfolder.Exists)
                    {
                        tempfolder.Create();
                    }

                    //预览图缓存
                    string saveName = Guid.NewGuid().ToString();
                    string savePath = Path.Combine(folderPath, saveName);
                     result = await Task.Run(() => imgConverter.Convert(folderPath, ref saveName, imgOptions, pageArray, ref error, getProgress));
                    ImageMagickPDFToImage(imageType, saveName, outputFolder, outputFileName);
                    DirectoryInfo di = new DirectoryInfo(folderPath);
                    di.Delete(true);
                }

                if (result)
                {
                    Process.Start(outputFolder.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static async Task<bool> RTFConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword, CPDFConvertRTFOptions rtfOptions=null)
        {
            bool result = false;
            try
            {
                int[] pageArray = pageIndexLists.ToArray();
                rtfConverter = new CPDFConverterRTF(inputpath, pawssword);
                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                result = await Task.Run(() => rtfConverter.Convert(outputFolder, ref outputFileName, rtfOptions,pageArray, ref error, getProgress));
                if (result)
                {
                    CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static async Task<bool> HTMLConvert(string inputpath, string outputpath, OnProgress getProgress, List<int> pageIndexLists, string pawssword, CPDFConvertHTMLOptions HtmlOption)
        {
            bool result = false;
            try
            {
                htmlConverter = new CPDFConverterHTML(inputpath, pawssword);
                int[] pageArray = pageIndexLists.ToArray();

                string outputFolder = outputpath;
                string outputFileName = Path.GetFileNameWithoutExtension(inputpath);
                ConvertError error = ConvertError.ERR_UNKNOWN;
                result = await Task.Run(() => htmlConverter.Convert(outputFolder, ref outputFileName, HtmlOption, pageArray, ref error, getProgress));
                if (result)
                {
                    CommonHelper.ShowFileBrowser(outputFileName.Replace("/", "\\"));
                }
            }
            catch (Exception ex)
            {

            }
            return result;
        }

        public static void Clear()
        {
            if (wordConverter != null)
            {
                wordConverter.Cancel();
            }
            if (excelConverter != null)
            {
                excelConverter.Cancel();
            }
            if (pptConverter != null)
            {
                pptConverter.Cancel();
            }
            if (txtConverter != null)
            {
                txtConverter.Cancel();
            }
            if (csvConverter != null)
            {
                csvConverter.Cancel();
            }
            if (rtfConverter != null)
            {
                rtfConverter.Cancel();
            }
            if (htmlConverter != null)
            {
                htmlConverter.Cancel();
            }
            Console.WriteLine("killed");
        }
        private static void StartFile(string path)
        {
            //Process.Start(path);
        }
        public static string GetFileNameAddSuffix(string path, string filename, string suffix)
        {
            int i = 1;
            string outname = filename;
            while (File.Exists(path + @"\" + outname + suffix))
            {
                outname = filename + $"({i.ToString()})";
                i++;
            }
            return outname;
        }


    }
}