REACT PDF: Cannot use the packages to show static PDF file - reactjs

I am trying to show a static pdf in React app. I have tried a lot of packages:
react-pdf
react-pdf-js
react-pdf-js-infinite
simple-react-pdf
pdfjs-dist
react-pdf-pages
They often say that we can use the URL, or pdf file for the props for the PDF component easily, but I cannot use either.
I had two main errors.
As I want to use myPDF for the props for the component, I write this:
import myPDF from 'path/to/pdf_file';
then, render_some_component pdf:{myPDF}
Here is the error:
ModuleParseError in
Module parse failed: Unexpected token (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
(When I comment that line, this kind of error disappears)
I used the file-loader in webpack config, I have tried many different ways but failed.
I use the pdf file directly for the props like this:
render_some_component pdf:{'path/to/pdf_file'}
In the Console:
Warning: Setting up fake worker.
11:23:55.962 pdf.worker.js:349 Warning: Ignoring invalid character "33" in hex string
11:23:55.963 pdf.worker.js:349 Warning: Ignoring invalid character "79" in hex string
...
There are a lot of 'Ignoring invalid character' like that and it always ends with:
localhost/:1 Uncaught (in promise) InvalidPDFException {name: "InvalidPDFException", message: "Invalid PDF structure"}
In the Network, Headers, I see:
Request URL:http://localhost:3000/myPdfFile.pdf
Request Method:GET
Status Code:200 OK
Remote Address:127.0.0.1:3000
but In the Network, Response, I see just the HTML layout.
I think the pdf file is loaded correctly but the package cannot recognize its PDF structure.
Except that two main errors, I had another error related to the Worker used in the packages but I don't know how to fix it:
Uncaught DOMException: Failed to construct 'Worker'
(This is something relates to Chrome as people say Chrome does not allow Worker in the local server)
Any help is highly appreciated as I am stuck in this in 4 days already.

Can you pleas clarify what you main task is?
If I understood it right you want to display a PDF file that already exists in a part of your application? You don't want to create a new PDF with JavaScript.
If you want to just show a PDF have you tried to use iframe?
Something like this:
<iframe
title="file"
style={{ width: '100%', height: '100%' }}
src={downloadURL}
/>
You ca use here also relative paths to the file from the location where your Component is or use full URLs to the file.

Related

Error in Jimp.loadFont (use load-bmfont module) with React

I am testing Jimp.js for image manipulation (using React with react-scripts, npm: 6.14.4, node: v12.16.3)
Everything is going well except writing text on a loaded image
import Jimp from 'jimp'
Jimp.read(image)
.then(image => {
console.log('image loaded', image)
Jimp.loadFont(Jimp.FONT_SANS_32_WHITE).then(font => {
console.log('font loaded', font)
image.print(font, 10, 10, 'Hello world that wraps!', 12)
// write image
})
})
This throws an error "error parsing font malformed file -- no element" in browser.js of load-bmfont module line 71 and dont execute the log 'font loaded'.
Googling not help i found only 2,3 items about this, associate with using custom fonts - but i use standard font from Jimp. (Using BMFont files instead of Jimp standard fonts doesnt help)
My first thought was the error ocured in a React App in the browser, so i write a Jest test to see if its work without browser context but it fail just like that.
Got any ideas?
Solved...
I'm using the React App within a Java Web Framework in a JSP File.
Jimp.loadFont(Jimp.FONT_SANS_32_WHITE)
search the font in a path that doesn`t exist for the webapp.
Moving the font files to a reachable path with context root
Jimp.loadFont(`${CONTEXT_ROOT}/foo/bar/font.font`) works.

react-pdf failing to render base64 PDF data, interpreting as hex string

I'm trying to use the react-pdf library to display a base64 encoded PDF file. The B64 data is accurate, as it loads in an iframe as such:
<iframe
className={css.previewIframe}
src={`data:application/pdf;base64,${
this.props.encodedPdf
}`}
/>
However, if I insert the data into a react-pdf document as such, I get an error:
<Document file={this.props.encodedPdf} />
The Document is rendered with an error message Failed to load PDF file., and the console logs the following error: InvalidPDFException {name: "InvalidPDFException", message: "Invalid PDF structure"}
I also get a lot of warnings like the following: Warning: Ignoring invalid character "109" in hex string
The documentation clearly states that the file prop can be B64 encoded content. Any idea on what the issue could be? Here is the B64 data if needed:
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
If I add data:application/pdf;base64, to the beginning of the string, there are no errors, but also nothing is rendered.
The issue was:
I needed data:application/pdf;base64, in front of the string
I did not have a component inside of my component. See https://github.com/wojtekmaj/react-pdf/issues/203

Android Manifest merger error in Codename One

In a bare bones project, I added these build hints:
android.gradleDep=compile 'com.erikagtierrez.multiple_media_picker:multiple-media-picker:1.0.5'
android.min_sdk_version=23
I would like to import the following Android library to make a CN1Lib (that requires at least Android SDK 23):
https://github.com/erikagtierrez/multiple-media-picker
To be short: I spent one day trying to import that, I also experimented with Android Studio and with suggestions found on Stack Overflow (trying to make a custom .aar), without success.
Could you help me to import that library? There is manifest merger error.
In fact, the issue reported by the build server is:
* What went wrong:
Execution failed for task ':processReleaseManifest'.
> Manifest merger failed : Attribute application#label value=(BareBones) from AndroidManifest.xml:15:17-42
is also present at [com.erikagtierrez.multiple_media_picker:multiple-media-picker:1.0.5] AndroidManifest.xml:23:9-41 value=(#string/app_name).
Suggestion: add 'tools:replace="android:label"' to <application> element at AndroidManifest.xml:15:3-43:103 to override.
I also tried to add the build hint:
android.xapplication_attr=tools:replace="android:label"
as suggested by the previous error, without success.
In the last case, I get:
Merging result: ERROR
/tmp/build1659178556337293135xxx/Test/src/main/AndroidManifest.xml:15:3-43:103 Error:
tools:replace specified at line:15 for attribute android:label, but no new value specified
/tmp/build1659178556337293135xxx/Test/src/main/AndroidManifest.xml Error:
Validation failed, exiting
-- Merging decision tree log ---
The last full log is here: https://gist.github.com/jsfan3/dd6c23f86a2ac949f996910c8cece62b
Thank you
This is happening because our code things you injected android:label on your own and doesn't inject it to avoid collision...
Change the code to this:
android.xapplication_attr=tools:replace="android:label" android:label="App Name"

How do we load a WebVtt file in React?

This is my data structure
WEBVTT
00:00:15.000 --> 00:00:17.951
At the left we can see...
00:00:18.166 --> 00:00:20.083
At the right we can see the...
00:00:20.119 --> 00:00:21.962
...the head-snarlers
I am trying to parse a web vtt file. For this I wrote :
var data = require('./captions.en.vtt');
Error
client:47 ./src/captions.en.vtt
Module parse failed: C:\Users\sampr\Desktop\MyVIew\WebVtt\src\captions.en.vtt Invalid number (3:0)
You may need an appropriate loader to handle this file type.
Could someone please help me?
You need a appropriate loader for the file type (.vtt).
Install file-loader (npm install --save-dev file-loader) and you could use it directly like this:
var data = require('file-loader!./captions.en.vtt');
Using Next.js, I ended up using this solution.
...add a file called staticdata.js inside the pages/api folder. This will create a Serverless Function that will load the json data from the file, and return it as a response.
Basically the solution is to return the data from an API endpoint.

Parse error while rendering the pdf file in angularjs app

When I try to access the pdf file which is public using the angular-pdf-viewer I got the following error message on console.
Error: [$parse:syntax] Syntax Error: Token ':' is an unexpected token at column 5 of the expression [http://pucdocket.s3.amazonaws.com/VA/PUE-2010-00039/122913.pdf] starting at [://pucdocket.s3.amazonaws.com/VA/PUE-2010-00039/122913.pdf].
here is my pdf directive for rendering the pdf file:
<pdf-viewer delegate-handle="my-pdf-container" url="http://pucdocket.s3.amazonaws.com/VA/PUE-2010-00039/122913.pdf" scale="1" show-toolbar="true" ></pdf-viewer>
could anyone help on this issue?
all the samples seems to be suggesting define url on scope and reference it. But you may try the following, which stringifys the url
<pdf-viewer delegate-handle="my-pdf-container" url="'http://pucdocket.s3.amazonaws.com/VA/PUE-2010-00039/122913.pdf'" scale="1" show-toolbar="true" ></pdf-viewer>

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