Is it possible to enter a multiline text/string literal in a 4D method? Something like:
C_TEXT($var)
$var:="""First Line
Second Line
Third Line"""
Using the triple-" here as they are being used in Python, just as example.
You could also do it that way in 4D v12 and above
C_TEXT($var)
$var:="First Line\r"+\
"Second Line\r"+\
"Third Line"
I don't believe it is. Throughout our program we do something like this:
C_TEXT(<>CR)
C_TEXT($var)
<>CR:=Char(13) //carriage return
$var:="First Line" + <>CR + "Second Line" + <>CR + "Third Line"
We also have a linefeed: <>LF:=Char(10). We use IP variables that are defined during program startup for these characters and a few others, Tab comes to mind. You could use constants, but we've had some issues with those in the past so we try not to use them when possible.
You can also use a \n or \r within the text. In the debugger it will just show them all on one line with the \n and \r, but I believe it will display multiline (it does in an Alert()).
$var:="First Line\nSecond Line\nThird Line"
We choose the first way for readability and maintainability.
Related
If you have a text file with many lines of text, is there a readily available way to convert it into the JSON Lines format?
Example text file contains:
This is the first line.
This is the "second" line.
This is the \third/ line.
This is the {fourth} line;
Example JSON Lines (.jsonl) file:
{"text": "This is the first line."}
{"text": "This is the \"second\" line."}
{"text": "This is the \\third\/ line."}
{"text": "This is the {fourth} line;"}
I was hoping there is a simple way to sort of linearly transform it like this, while escaping the special characters for JSON. Are there online or (CLI) tools for the Mac that can do this?
A browser is the most handy way to access an interpreter nowadays. Here's a quick solution based on that:
Copy and paste your lines into this page: https://codebeautify.org/javascript-escape-unescape
Then copy the escaped string, press F12 on a modern broser and paste the following code:
console.log(JSON.stringify("***PASTE HERE**".split("\n").map(x => ({text: x}))))
Then delete ***PASTE HERE*** and paste the escaped lines. Press enter and you'll have a JSON output similar to what you want.
This should not be that hard but I can't seem to find information on it. How do you get line breaks to appear inside a text area when you are echoing it from the server? In other words what is <some code> in line below?
<text area>first line <some code> second line <some code> third line</text area>
I know how to write out <some code>. I just need to know what it should be. I have tried \n, \r\n, '\n', "\n", \N and variations but cannot get the line breaks to display.
Note: This is not about displaying in HTML so <br> is not what I want. This is not about getting it to display if you are typing it yourself where you can type a carriage return, i.e. :
<textarea>first line
second line </textarea>
When you are outputting from server you cannot use keyboard. This is what code to accomplish above.
Thanks for any suggestions
This is a super old question, but I ran into the same issue ajaxing content into a text area.
Thanks to this answer I used the html code for a new line,
and that worked for me. So basically:
<textarea> Here's my returned text
And it gets two lines </textarea>
which (at least for me) comes out as
Here's my returned text
And it gets two lines
try this
<'p'>firstline<'/p'>
<'p'>secondline<'/p'>
remove comma from p and /p
for display \n in html you should use nl2br() php function .
otherwise you should using "\n" (not "/n") for break the line inside your text ;
You should try \r\n instead of /r/n.
You need to use "\r\n" (with double quotes) when echoing it out from PHP.
Is this possible?
I've tried newline, carriage return, and also just straight putting the < br \> into this field, and the email is just showing it all on one line none the less.
Their documentation doesn't say anything about valid characters or HTML being valid or invalid for that field. But if you cannot get it to work then that pretty much shows that you cannot do it.
I have always used Replace(myString, vbCrLf, "<br/>") to show line breaks when outting something to a page from the database (retaining line breaks). I am now using a DetailsView that has a textarea as one of the fields and uses a LinqDataSource as its datasource. I want to allow users to type line breaks in the textarea and display them on a page (replaced with <br/>'s to show breaks in the HTML). Linq seems to be replacing the line breaks with something else that is now causing the Replace statement to not find the breaks, therefor not inserting the html <br/>. When loading the value from the database to a textarea the line breaks are still there though. I have tried replacing the following with <br> but none of it works.
vbCrLf
vbNewLine
Environment.NewLine
...none of those work... what do I need to find/replace with <br> to show breaks?
TextArea uses different newline characters depending on the browser:
Internet Explorer: \r\n
FireFox: \n
It has also been suggested that \r is used in some cases, although, I haven't come across those cases.
Carriage return is encoded as %0D and Line feed as %0A. So if your text is HTML encoded (as it should be), then you need to replace %0D and/or %0A [depending on your environment] with your <br />
Here is a full discussion on the topic http://www.highdots.com/forums/html/standard-newline-character-264611.html.
Look at the string as a byte array, what values are the line breaks? There are only so many options here, 10, 13, both, none?
This works great for me:
string Output = HttpUtility.HtmlEncode(DirtyText); // HTML Encode it first for safety..
return Output.Replace("\n", "<br />"); // Now replace New Lines with HTML BRs
You end up with a safe encoded output, but also nicely formatted line spacing exactly as entered by the user into a standard textarea.
How can i add a line break to the text area in a html page?
i use VB.net for server side coding.
If it's not vb you can use
(ascii codes for cr,lf)
Add a linefeed ("\n") to the output:
<textarea>Hello
Bybye</textarea>
Will have a newline in it.
You could use \r\n, or System.Environment.NewLine.
If you're inserting text from a database or such (which one usually do), convert all "<br />"'s to &vbCrLf. Works great for me :)
In a text area, as in the form input, then just a normal line break will work:
<textarea>
This is a text area
line breaks are automatic
</textarea>
If you're talking about normal text on the page, the <br /> (or just <br> if using plain 'ole HTML4) is a line break.
However, I'd say that you often don't actually want a line break. Usually, your text is seperated into paragraphs:
<p>
This is some text
</p>
<p>
This is some more
</p>
Which is much better because it gives a clue as to how your text is structured to machines that read it. Machines that read it include screen readers for the partially sighted or blind, seperating text into paragraphs gives it a chance of being presented correctly to these users.
I believe this will work:
TextArea.Text = "Line 1" & vbCrLf & "Line 2"
System.Environment.NewLine could be used in place of vbCrLf if you wanted to be a little less VB6 about it.
Escape sequences like "\n" work fine ! even with text area! I passed a java string with the "\n" to a html textarea and it worked fine as it works on consoles for java!
Here is my method made with pure PHP and CSS :
/** PHP code */
<?php
$string = "the string with linebreaks";
$string = strtr($string,array("."=>".\r\r",":"=>" : \r","-"=>"\r - "));
?>
And the CSS :
.your_textarea_class {
style='white-space:pre-wrap';
}
You can do the same with regex (I'm learning how to build regex with pregreplace using an associative array, seems to be better for adding the \n\r which makes the breaks display).