I have some HTML stored in a database that I want to insert into a Word document using DocumentFormat.OpenXml.
Inspired by the article here, I tried the following code.
mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.Xhtml,
String.Format("<html><body>{0}</body></html>", html));
But this gives me the following error.
'(My HTML Here)' ID is not a valid XSD ID
I really don't understand this error. Does anyone know what I'm doing wrong?
Also, my biggest concern about this approach is that the HTML may not be perfectly formed and I suspect this code is not as forgiving as browsers are. Any recommendations for other possible approaches? I'm considering parsing the HTML and rendering it myself, but that will be a lot of work.
The second parameter is a part ID, not the part contents.
To set the part contents, you need to put well-formed XHTML into the RootElement property of the returned AlternativeFormatImportPart
Related
Lets say I want to scrape the Neo4j RefCard found at: https://neo4j.com/docs/cypher-refcard/current/
And I would like to fetch a 'code' example along with its styling. Here's my target. Notice that it has CSS treatment (font, color...):
...so in Neo4j I call the apoc.load.html procedure as shown here, and you can see it's no problem finding the content:
It returns a map with three keys: tagName, attributes, and text.
The text is the issue for me. It's stripped of all styling. I would like for it to let me know more about the styling of the different parts of this text.
The actual HTML in the webpage looks like following image with all of these span class tags: cm-string, cm-node, cm-atom, etc. Note that this was not generated by Neo4j's apoc.load.html procedure. It came straight from my Chrome browser's inspect console.
I don't need the actual fonts and colors, just the tag names.
I can seen in the documentation that there is an optional config map you can supply, but there's no explanation for what can be configured there. It would be lovely if I could configure it to return, say, HTML rather than text.
The library that Neo4j uses for CSS selection here is jsoup.
So I am hoping to not strip the <span> tags, or otherwise, extract their class names for each segment of text.
Could you not generate the HTML yourself from the properties in your object? It looks they are all span tags with 3 different classes depending on whether your using the property name, property value, or property delimiter?
That is probably how they are generating the HTML themselves.
Okay, two years later I revisited this question I posted, and did find a solution. I'll keep it short.
The APOC procedure CALL apoc.load.html is using the scraping library Jsoup, which is not a full-fledged browser. When it visits a page it reads the html sent by the server but ignores any javascript. As a result, if a page uses javascript for inserting content or even just formatting the content, then Jsoup will miss the html that the javascript would have generated had it run.
So I have just tried out the service at prerender.com. It's simple to use. You send it a URL, it takes your url as an argument and fetches that page itself and executes the page's javascript as it does. It returns the final result as static HTML.
So if I just call prerender.com with apoc.load.html then the Jsoup library will simply ask for the html and this time it will get the fully rendered html. :)
You can try the following two queries and see the difference pre-rendering makes. The span tags in this page are rendered only by javascript. So if we call it asking for its span tags without pre-rendering we get nothing returned.
CALL apoc.load.html("https://neo4j.com/docs/cypher-refcard/current/", {target:".listingblock pre:contains(age: 38) span"}) YIELD value
UNWIND value.target AS spantags
RETURN spantags
...but if we call it via the prender.com website, you will get a bunch of span tags and their content.
CALL apoc.load.html("https://service.prerender.cloud/https://neo4j.com/docs/cypher-refcard/current/", {target:".listingblock pre:contains(age: 38) span"}) YIELD value
UNWIND value.target AS spantags
RETURN spantags
I am trying to parse some html to switch out values of various element attributes. I decided that the most reliable way to parse the html was to use an xml parser (msxml.)
The problem is that the html I'm trying to parse contains attribute like:
<param name="flashvars" value="autoplay=false&brand=embed&cid=97%2Ftest&locale=en_US"/>
Which causes the xml parser to blow up. I figured out that I need to server.htmlencode() the value attribute in order for the xml parser to load it properly. How do I approach this?
I feel like the problem is a vicious circle. I couldn't use regex's because html is not regular enough, and now I can't use xml parsers because the html isn't "well formed"
help. How do I approach this issue? I want to be able to change attribute values with a vbscript.
Is your HTML well formed? If so you could simply use an XML DomDocument. Use XPath to find the attributes you want to replace.
You can actually use JScript serverside as well in ASP, whicdh might give you access to HTMLDom libraries you could use.
You should probably have a look at one of the libraries for cleaning up HTML, something like HTML Tidy http://www.w3.org/People/Raggett/tidy/
Your main problem is you need to do a replace on the ampersands, they need to be & in well formed XML/XHTML.
I have taken over a code base and I have to read in these html files that were generated by Microsoft Word, I think so it has all kinds of whacky inline formatting.
is there anyway to parse out all of the bad inline formatting and just get the text from this stream. I basically want a purifier programmatically so I can then apply some sensible css
You should use HTML Tidy - it's uniquitous when it comes to cleansing HTML. There's an article on DevX that describes how to do it from .NET.
in the end i just wrote a small class that did a bunch of find and replaces. not pretty but it worked.
I generate an XHTML document and set the Mime type as "application/msword" so it opens in Word.
To create a header I appear to have to reference an external file thus:
<style>
...
#page{mso-footnote-separator:url("**OUT_files/header.htm**") fs;
mso-footnote-continuation-separator:url("OUT_files/header.htm") fcs;
mso-endnote-separator:url("OUT_files/header.htm") es;
mso-endnote-continuation-separator:url("OUT_files/header.htm") ecs;}
#page Section1{
mso-header-margin:.5in;
mso-header:url("OUT_files/header.htm") h1;
} }
...
</style>
Does anyone know how to reference a div defined within the main XHTML document itself, without having to reference an external file?
Thanks
MS Word is quite locked down. I was not able to get this to work with a non-external file, but it seems to make sense. The values being "included" are repeated in the display. It's not possible to have "hidden" divs and refer to them (at least, not when I was trying), so not sure how to get this to work properly.
For me, I ended up just creating a simple Macro that would handle this for me.
If you are very lucky, a data: URL might work, maybe, in Word 2007? I haven't tried that myself, but MS introduced partial support for data: URLs in IE8.
I receive HTML pages from our creative team, and then use those to build aspx pages. One challenge I frequently face is getting the HTML I spit out to match theirs exactly. I almost always end up screwing up the nesting of <div>s between my page and the master pages.
Does anyone know of a tool that will help in this situation -- something that will compare 2 pages and output the structural differences? I can't use a standard diff tool, because IDs change from what I receive from creative, text replaces lorem ipsum, etc..
You can use HTMLTidy to convert the HTML to well-formed XML so you can use XML Diff, as Gulzar suggested.
tidy -asxml index.html
If out output XML compliant HTML. Or at least translate your HTML product into XML compliancy, you at least could then XSL your output to remove the content and id tags. Apply the same transformation to their html, and then compare.
I was thinking on lines of XML Diff since HTML can be represented as an XML Document.
The challenge with HTML is that it might not be always well formed. Found one more here showing how to use XMLDiff class.
A copy of my own answer from here.
What about DaisyDiff (Java and PHP vesions available).
Following features are really nice:
Works with badly formed HTML that can be found "in the wild".
The diffing is more specialized in HTML than XML tree differs. Changing part of a text node will not cause the entire node to be changed.
In addition to the default visual diff, HTML source can be diffed coherently.
Provides easy to understand descriptions of the changes.
The default GUI allows easy browsing of the modifications through keyboard shortcuts and links.
winmerge is a good visual diff program