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Sample Kotlin code for using PDFTron SDK to convert Office documents to PDF (including Word, Excel, PowerPoint and Publisher) without needing any external dependencies or MS Office licenses. Office to PDF conversion can be performed on a Linux or Windows server to automate Office-centric workflows, or entirely in the user's client (web browser, mobile device). The conversion functionality can be combined with our Viewer to display or annotate Office files (docx, xlsx, pptx) on all major platforms, including Web, Android, iOS, Xamarin, UWP, and Windows. Learn more about our Kotlin PDF Library and Office Document Conversion Library.
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//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------
package com.pdftron.android.pdfnetsdksamples.samples
import android.content.Context
import com.pdftron.android.pdfnetsdksamples.OutputListener
import com.pdftron.android.pdfnetsdksamples.PDFNetSample
import com.pdftron.android.pdfnetsdksamples.R
import com.pdftron.android.pdfnetsdksamples.util.Utils
import com.pdftron.common.PDFNetException
import com.pdftron.pdf.*
import com.pdftron.sdf.SDFDoc
import java.util.*
/**
* The following sample illustrates how to use the PDF.Convert utility class to convert
* .docx files to PDF
*
*
* This conversion is performed entirely within the PDFNet and has *no* external or
* system dependencies dependencies -- Conversion results will be the sam whether
* on Windows, Linux or Android.
*
*
* Please contact us if you have any questions.
*/
class OfficeToPDFTest(context: Context?) : PDFNetSample() {
override fun run(outputListener: OutputListener?) {
super.run(outputListener)
mOutputListener = outputListener
Companion.mFileList.clear()
printHeader(outputListener!!)
// first the one-line conversion interface
simpleDocxConvert("Fishermen.docx", "Fishermen.pdf")
// then the more flexible line-by-line interface
flexibleDocxConvert("the_rime_of_the_ancient_mariner.docx", "the_rime_of_the_ancient_mariner.pdf")
// conversion of RTL content
flexibleDocxConvert("factsheet_Arabic.docx", "factsheet_Arabic.pdf")
for (file in Companion.mFileList) {
addToFileList(file)
}
printFooter(outputListener!!)
}
companion object {
private var mOutputListener: OutputListener? = null
private val mFileList = ArrayList<String>()
private var sLayoutSmartPluginPath: String? = null
fun simpleDocxConvert(inputFilename: String, outputFilename: String?) {
try {
// perform the conversion with no optional parameters
val pdfdoc = PDFDoc()
Convert.officeToPdf(pdfdoc, Utils.getAssetTempFile(INPUT_PATH + inputFilename)!!.absolutePath, null)
// save the result
pdfdoc.save(Utils.createExternalFile(outputFilename!!, mFileList).absolutePath, SDFDoc.SaveMode.INCREMENTAL, null)
// And we're done!
mOutputListener!!.println("Done conversion " + Utils.createExternalFile(outputFilename, mFileList).absolutePath)
} catch (e: PDFNetException) {
mOutputListener!!.println("Unable to convert MS Office document, error:")
mOutputListener!!.printError(e.stackTrace)
mOutputListener!!.printError(e.stackTrace)
}
}
fun flexibleDocxConvert(inputFilename: String, outputFilename: String?) {
try {
val options = OfficeToPDFOptions()
options.smartSubstitutionPluginPath = sLayoutSmartPluginPath
// create a conversion object -- this sets things up but does not yet
// perform any conversion logic.
// in a multithreaded environment, this object can be used to monitor
// the conversion progress and potentially cancel it as well
val conversion = Convert.streamingPdfConversion(
Utils.getAssetTempFile(INPUT_PATH + inputFilename)!!.absolutePath, options)
mOutputListener!!.println(inputFilename + ": " + Math.round(conversion.progress * 100.0)
+ "% " + conversion.progressLabel)
// actually perform the conversion
while (conversion.conversionStatus == DocumentConversion.e_incomplete) {
conversion.convertNextPage()
mOutputListener!!.println(inputFilename + ": " + Math.round(conversion.progress * 100.0)
+ "% " + conversion.progressLabel)
}
if (conversion.tryConvert() == DocumentConversion.e_success) {
val num_warnings = conversion.numWarnings
// print information about the conversion
for (i in 0 until num_warnings) {
mOutputListener!!.println("Warning: " + conversion.getWarningString(i))
}
// save the result
val doc = conversion.doc
doc.save(Utils.createExternalFile(outputFilename!!, mFileList).absolutePath, SDFDoc.SaveMode.INCREMENTAL, null)
// done
mOutputListener!!.println("Done conversion " + Utils.createExternalFile(outputFilename, mFileList).absolutePath)
} else {
mOutputListener!!.println("Encountered an error during conversion: " + conversion.errorString)
}
} catch (e: PDFNetException) {
mOutputListener!!.println("Unable to convert MS Office document, error:")
mOutputListener!!.printError(e.stackTrace)
mOutputListener!!.printError(e.stackTrace)
}
}
}
init {
try {
val layoutPluginPath = Utils.copyResourceToTempFolder(context, R.raw.pdftron_layout_resources, false, "pdftron_layout_resources.plugin")
PDFNet.addResourceSearchPath(layoutPluginPath)
sLayoutSmartPluginPath = Utils.copyResourceToTempFolder(context, R.raw.pdftron_smart_substitution, false, "pdftron_smart_substitution.plugin")
PDFNet.addResourceSearchPath(sLayoutSmartPluginPath)
} catch (e: Exception) {
mOutputListener!!.printError(e.stackTrace)
}
setTitle(R.string.sample_officetopdf_title)
setDescription(R.string.sample_officetopdf_description)
}
}