How to merge any documents from urls for PDF merging API in Delphi and PDF.co Web API

PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

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ByteScoutWebApiExec.pas

      
unit ByteScoutWebApiExec; interface function WebAPIExec(query, api_key: string; var file_name: string): boolean; implementation uses System.SysUtils, Classes, IdHTTP, IdURI, IdSSL, IdSSLOpenSSL, System.JSON; function WebAPIExec(query, api_key: string; var file_name: string): boolean; var http: TIdHTTP; http_file_downloader: TIdHTTP; response_stream: TStringStream; response: string; io_handler: TIdSSLIOHandlerSocketOpenSSL; response_json: TJSONObject; is_error: TJSONBool; file_url: string; file_stream: TFileStream; error_message: TJSONString; begin Result := false; file_name := ''; // Put the necessary libeay32.dll & ssleay32.dll library versions in the // program folder io_handler := TIdSSLIOHandlerSocketOpenSSL.Create(nil); io_handler.SSLOptions.Method := sslvSSLv23; io_handler.SSLOptions.SSLVersions := [sslvSSLv23]; http := TIdHTTP.Create(nil); http.HTTPOptions := http.HTTPOptions + [hoForceEncodeParams]; http.AllowCookies := true; http.HandleRedirects := true; http.Request.Connection := 'keep-alive'; http.Request.ContentType := 'application/json; charset=utf-8'; http.Request.UserAgent := 'User-Agent:Mozilla/5.0 (Windows NT 6.1; ) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36'; http.IOHandler := io_handler; response_stream := TStringStream.Create(); file_stream := nil; http_file_downloader := nil; try try // Set API Key http.Request.CustomHeaders.AddValue('x-api-key', api_key); // Execute request http.Get(query, response_stream); // Parse JSON response response_json := TJSONObject.ParseJSONValue(response_stream.DataString, false) as TJSONObject; is_error := response_json.Values['error'] as TJSONBool; if (not is_error.AsBoolean) then begin file_url := TJSONString(response_json.Values['url']).ToString(); file_url := StringReplace(file_url, '"', '', [rfReplaceAll]); file_name := ExtractFileName(StringReplace(file_url, '/', '\', [rfReplaceAll])); file_name := IncludeTrailingPathDelimiter(ExtractFilePath(ParamStr(0))) + file_name; http_file_downloader := TIdHTTP.Create(nil); // Download generated file file_stream := TFileStream.Create(file_name, fmCreate); http_file_downloader.Get(file_url, file_stream); Result := true; end else begin error_message := response_json.Values['message'] as TJSONString; raise Exception.Create(error_message.ToString); end; except on E: Exception do begin response := http.ResponseText; Writeln(E.ClassName, ': ', E.Message); end; end; finally response_stream.Free(); http.Free(); if (Assigned(file_stream)) then file_stream.Free(); if (Assigned(http_file_downloader)) then http_file_downloader.Free(); end; end; end.

MergeAnyDocumentsFromURLs.dpr

      
program MergeAnyDocumentsFromURLs; //*******************************************************************************************// // // // Download Free Evaluation Version From: https://bytescout.com/download/web-installer // // // // Also available as Web API! Get Your Free API Key: https://app.pdf.co/signup // // // // Copyright ? 2017-2020 ByteScout, Inc. All rights reserved. // // https://www.bytescout.com // // https://pdf.co // // // //*******************************************************************************************// {$APPTYPE CONSOLE} {$R *.res} uses System.SysUtils, Classes, IdURI, ByteScoutWebApiExec in 'ByteScoutWebApiExec.pas'; const // The authentication key (API Key). // Get your own by registering at https://app.pdf.co/documentation/api API_KEY: string = '********************************************' // Destination PDF file name DESTINATION_FILE: string = 'result.pdf'; // Direct URLs of files to merge. Supports documents, spreadsheets, images as sources. SOURCE_FILES: array [0..1] of string = ( 'https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/pdf-merge/sample1.pdf', 'https://bytescout-com.s3-us-west-2.amazonaws.com/files/demo-files/cloud-api/doc-to-pdf/sample.docx' ); var query: string; file_name: string; waiting_any_key: char; files: string; i: integer; begin try // Prepare URL for `Merge PDF` API call files := ''; for i := 0 to High(SOURCE_FILES) do begin if (Length(files) > 0) then files := files + ','; files := files + SOURCE_FILES[i]; end; query := TIdURI.URLEncode(Format('https://api.pdf.co/v1/pdf/merge2' + '?name=%s&url=%s', [ExtractFileName(DESTINATION_FILE), files])); if (WebAPIExec(query, API_KEY, file_name)) then Writeln(Format('Generated PDF file saved as "%s" file.', [file_name])); finally Writeln('Press any key to continue...'); Readln(waiting_any_key); end; end.

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