| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778 | .Dd April 5, 2016.Dt he 1.Sh NAME.Nm he.Nd encode/decode HTML entities just like a browser would.Sh SYNOPSIS.Nm.Op Fl -escape Ar string.br.Op Fl -encode Ar string.br.Op Fl -encode Fl -use-named-refs Fl -everything Fl -allow-unsafe Ar string.br.Op Fl -decode Ar string.br.Op Fl -decode Fl -attribute Ar string.br.Op Fl -decode Fl -strict Ar string.br.Op Fl v | -version.br.Op Fl h | -help.Sh DESCRIPTION.Nmencodes/decodes HTML entities in strings just like a browser would..Sh OPTIONS.Bl -ohang -offset.It Sy "--escape"Take a string of text and escape it for use in text contexts in XML or HTML documents. Only the following characters are escaped: `&`, `<`, `>`, `"`, and `'`..It Sy "--encode"Take a string of text and encode any symbols that aren't printable ASCII symbols and that can be replaced with character references. For example, it would turn `©` into `©`, but it wouldn't turn `+` into `+` since there is no point in doing so. Additionally, it replaces any remaining non-ASCII symbols with a hexadecimal escape sequence (e.g. `𝌆`). The return value of this function is always valid HTML..It Sy "--encode --use-named-refs"Enable the use of named character references (like `©`) in the output. If compatibility with older browsers is a concern, don't use this option..It Sy "--encode --everything"Encode every symbol in the input string, even safe printable ASCII symbols..It Sy "--encode --allow-unsafe"Encode non-ASCII characters only. This leaves unsafe HTML/XML symbols like `&`, `<`, `>`, `"`, and `'` intact..It Sy "--encode --decimal"Use decimal digits rather than hexadecimal digits for encoded character references, e.g. output `©` instead of `©`..It Sy "--decode"Takes a string of HTML and decode any named and numerical character references in it using the algorithm described in the HTML spec..It Sy "--decode --attribute"Parse the input as if it was an HTML attribute value rather than a string in an HTML text content..It Sy "--decode --strict"Throw an error if an invalid character reference is encountered..It Sy "-v, --version"Print he's version..It Sy "-h, --help"Show the help screen..El.Sh EXIT STATUSThe.Nm heutility exits with one of the following values:.Pp.Bl -tag -width flag -compact.It Li 0.Nmdid what it was instructed to do successfully; either it encoded/decoded the input and printed the result, or it printed the version or usage message..It Li 1.Nmencountered an error..El.Sh EXAMPLES.Bl -ohang -offset.It Sy "he --escape '<script>alert(1)</script>'"Print an escaped version of the given string that is safe for use in HTML text contexts, escaping only `&`, `<`, `>`, `"`, and `'`..It Sy "he --decode '©𝌆'"Print the decoded version of the given HTML string..It Sy "echo\ '©𝌆'\ |\ he --decode"Print the decoded version of the HTML string that gets piped in..El.Sh BUGShe's bug tracker is located at <https://github.com/mathiasbynens/he/issues>..Sh AUTHORMathias Bynens <https://mathiasbynens.be/>.Sh WWW<https://mths.be/he>
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