escaping

I need a function like string ToLiteral(string input) from this post . Such that char *literal = to_literal("asdf\r\n"); Would yield literal ==> "asdf\\r\\n" . I've googled around, but not been able to find anything (guess that I've must be using the wrong terms). However, I assume that a library with this functionality must be out there somewhere... Thank you for the interresting answers. Googling "c string escape function" by the way seems to be the key to obtaining even more examples and GLIB provides g_strescape () which seems to be exactly what I need. There's no built-in function for

These two give identical output: 1> io:format("Hello, world!~n"). Hello, world! ok 2> io:format("Hello, world!\n"). Hello, world! ok Why does io:format support ~n when \n does the same thing? Are there any differences? According to "Programming Erlang", ~n outputs the platform-specific new line sequence ( \n on Unix, \r\n on Windows, etc.). I think \n just writes the \n character, but am not sure. According to io document , The general format of a control sequence is ~F.P.PadModC . So the format must begin with ~ , and character n is one of the control sequences with the definition Writes a

I have been using slim, and suddenly noticed that it escapes everything by default. So the anchor tag looks something like this: <a href="/users/lyann/followers"> <img class="user-image" src="http://adasdasdasd.cloudfront.net/users&# 47;2011/05/24/4asdasd/asdasd.jpg" /> Is it okay for the href and src attributes to be escaped like this? Are there any other implications? All browsers seems to render it without a problem, though. Yes, it's perfectly fine. Character references are valid inside attributes, too, and will be treated as character references just the same. For reference, see: A

Disclosure: I have read this answer many times here on SO and I know better than to use regex to parse HTML. This question is just to broaden my knowledge with regex. Say I have this string: some text <tag link="fo>o"> other text I want to match the whole tag but if I use <[^>]+> it only matches <tag link="fo> . How can I make sure that > inside of quotes can be ignored. I can trivially write a parser with a while loop to do this, but I want to know how to do it with regex. Vasili Syrakis Regular Expression: <[^>]*?(?:(?:('|")[^'"]*?\1)[^>]*?)*> Online demo: http://regex101.com/r/yX5xS8 Full

It's frustrated with MySQL's pattern escaping used in LIKE operator. root@dev> create table foo(name varchar(255)); Query OK, 0 rows affected (0.02 sec) root@dev> insert into foo values('with\\slash'); Query OK, 1 row affected (0.00 sec) root@dev> insert into foo values('\\slash'); Query OK, 1 row affected (0.00 sec) root@dev> select * from foo where name like '%\\\\%'; Empty set (0.01 sec) root@dev> select * from foo; +------------+ | name | +------------+ | with\slash | | \slash | +------------+ 2 rows in set (0.00 sec) root@dev> select * from foo where name like '%\\\\%'; Empty set (0.00

I have a page where I am trying to parse following json string using JSON.parse '[{"Name":"Eggs","Complete":false,"Notes":"Notes here\n"},{"Name":"Sugar","Complete":false,"Notes":null}]' But following code gives error "Uncaught SyntaxError: Unexpected token" var groceriesJson = JSON.parse(jsonString); Then I came to know that its because of \n in json string. So I did try this solution . But no luck. Still same error "Uncaught SyntaxError: Unexpected token" function escapeSpecialChars(jsonString) { return jsonString.replace(/\\n/g, "\\n") .replace(/\\'/g, "\\'") .replace(/\\"/g, '\\"')