Re: ident the code

[Andreas Politz]

filebat Mark wrote:
> I have wrote the following elisp function. I think it works from my side.
> Hopes it's useful for someone else.
>
>
> (global-set-key [M-f12] 'my_indent_code);;indent code
> (defun my_indent_code()
>   (interactive)
>   ;;remove blank lines
>   (goto-char 0)
>   (flush-lines "^$")
>   (save-buffer)
>   (setq current_filename (buffer-name (current-buffer)))
>   ;;indent the code, add or remove some space
>   (setq commandline "indent ")
>   (setq commandline (concat commandline current_filename))
>   (shell-command-to-string commandline)
>   ;;convert the line endings of text files from DOS style to unix style
>   (setq commandline "dos2unix ")
>   (setq commandline (concat commandline current_filename))
>   (shell-command-to-string commandline)
>   ;;reload
>   (revert-buffer t t)
> )
>
>
>
> 2008/8/26 filebat Mark <filebat.mark@gmail.com>
>
> > to Peter:
> > I think our replace-regex doesn't work well.
> > 1) Supposing a code line is "if(s!=0)", it will be changed into "if(s! =
> > 0)". That's definitely not the thing we want. The same problem occurs for
> > "if (s==0)".
> > 2) A line of "strcpy(str, "a=2")", will be changed into "strcpy(str, "a =
> > 2").
> >
> > So we should spend more effort to solve those problems.
> >
> > -----------------------------------------------------------------------------------------------------------------------
> > To David:
> > Indent is quite a useful utility. Thanks very much for your suggestion!
> > There are still something that doesn't look good for me.
> > Such as, script1 will be changed to srcipt2.
> > script1
> >
> > void test(char* str)
> > {
> >  int i;
> > i=    2;
> >
> > strcpy(str,        "hello");
> > }
> >
> > script2
> > void
> > test( char* str )
> > {
> >  int i;
> >  i = 2;
> >
> >  strcpy(str, "hello");
> > }
> >
> >
> > But what I want is script3.
> > script3:
> > void test( char* str )
> > {
> >  int i;
> >  i = 2;
> >  strcpy(str, "hello");
> > }
> >
> >
> > -----------------------------------------------------------------------------------------------------------------------
> > I'am sorry to bother you guys. I just curious how skilled programmers
> > indent their codes, to make them look nice. They may have written tons of
> > codes, not only C/C++, but also java, python, whatever.
> >
> >
> > 2008/8/26 David Hansen <david.hansen@gmx.net>
> >
> > On Mon, 25 Aug 2008 21:59:01 +0800 filebat Mark wrote:
> > > > I think maybe an elisp function can do this job. I am wondering how to
> > > find
> > > > this elisp code, cause I don't want to reinvent the wheel.
> > > Tried this?  It has tons of options.
> > >
> > > INDENT(1)
> > >
> > > NAME
> > >       indent  - changes the appearance of a C program by inserting or
> > >       deleting whitespace.
> > >
> > > David
> >
> > --
> > Thanks & Regards
> >
> > Denny Zhang


Here is how I would do it, with my current knowledge
of emacs-fu.

(defun pretty-operator (start end)
  (interactive "r")
  (save-excursion
    (goto-char start)
    (while (search-forward-regexp "\\(\\b\\|\\s-*\\)=\\(\\b\\|\\s-*\\)" (1+ 
end) t)
      (when (not (or (nth 4 (syntax-ppss)) ;not string
                     (nth 3 (syntax-ppss)))) ;not comment
        (replace-match " = ")))))


-ap