Simple code beautifier

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created 2004 · complexity basic · author Gabriel Zachmann · version 6.0


Occasionally, I get code from other people who, for instance, don't like to put spaces in the for-loops or assignments.

For example, what I get looks like

for(int j=0;j<size;j++)
    if(vector[j]>d)

and what I would like to see is

for ( int j = 0; j < size; j ++ )
    if ( vector[j] > d )

Here are a few vimrc lines that can help. Put them in your vimrc, or .vim/after/ftplugin/cpp.vim (or whatever language you are using), then you can beautify at least single lines using one mouse click.

nmenu Misc.Beautify.For :s/for\s*(\s*/for ( /<CR>:s/\s*)\s*$/ )/<CR>:s/\(\i\+\)\s*=\s*/\1 = /<CR>:s/\s*\([=<>!]=\\|[<>]\)\s*/ \1 /<CR>:s/\s*\(--\\|++\)/\1/<CR>:s/\s*;\s*/; /g<CR>
nmenu Misc.Beautify.Func :s/\s*)/ )/g<CR>:s/\s*\([(,]\)\s*/\1 /g<CR>:s/(\s\+)/()/g<CR>
nmenu Misc.Beautify.If :s/if\s*(\s*/if ( /<CR>:s/\s*)\s*$/ )/<CR>:silent s/\s*\([=<>!]=\\|[<>]\)\s*/ \1 /<CR>
nmenu Misc.Beautify.Assign :s/\s*\([-+*\/&\|]\?\)\s*=\s*/ \1= /g<CR>

Tip: if you need to beautify several lines, tear off the menu.

Of course, being simple regexes, these little helpers can be fooled pretty easily by complicated code, but they should work for 90% of your code.

[edit] Comments

Do it automatically if you are only reading code (the file won't be mark modified):

function! Mosh_Beautify()
  :silent! %s,^\(\s*\)\<if(,\1if (,
  " etc
endfun
:autocmd BufRead *.java :call Mosh_Beautify()

It may be easier (and more flexible) to use GNU indent. Check it out: http://www.gnu.org/software/indent/indent.html


G=gg in command mode will auto reindent the entire document.
== will indent the current line.
= in visual mode will indent the selected text.
=% in command mode will reindent the current braces.

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