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Written by Oleksandr Gavenko (AKA gavenkoa), compiled on 2017-10-13 from rev 5ee52f8d25b5.

Pretty print source code.

About pretty printing.

Code formatter, beautifier, pretty printer.

http://en.wikipedia.org/wiki/Pretty-printer
Wiki article on pretty printing.

json

With jq (available in Debian/Cygwin):

$ jq  $FILE
$ curl -s http://.../... | jq

By default jq produce colorized output in terminal!

With Python 2.6+:

$ python -m simplejson.tool  $FILE
$ python -m json.tool  $FILE

In terminal you can add color support with pygmentize:

$ curl -s http://.../... | python -m simplejson.tool | pygmentize -l json

xml

With tidy:

$ tidy -xml -i -utf8 -o out.xml in.xml

or in Emacs:

C-x h C-x <RET> c utf-8 <RET> C-u M-| tidy -q -xml -i -utf8 -

With xmllint:

$ xmllint --format file.xml

or in Emacs:

: C-x h C-u M-| xmllint --format - <RET>

With Emacs and nxml you need introduce line-breaks and then:

C-x h C-M-\
http://tidy.sourceforge.net
Home page.
http://www.emacswiki.org/cgi-bin/wiki/tidy.el
Emacs bindings.
http://xmlindent.sourceforge.net/
xmlindent home page.

c/c++/java/c#.

Artistic Style, astyle.

A Free, Fast and Small Automatic Formatter for C, C++, C#, and Java Source Code.

There are exist package for Cygwin, Debian.

http://astyle.sourceforge.net/
home page

Uncrustify.

Source Code Beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA.

Exist package for Windows (binary from home page), Debian.

http://uncrustify.sourceforge.net/
home page

jpplib.

Pretty Printer Library.

http://jpplib.sourceforge.net/
Home page.

Perl.

http://perltidy.sourceforge.net/
Home page.