User Commands                                          unifdef(1)



NAME
     unifdef - resolve and remove ifdef'ed lines from  C  program
     source

SYNOPSIS
     unifdef [-clt] [-Dname] [-Uname] [-iDname] [-iUname] ...
          [filename]


DESCRIPTION
     unifdef removes ifdefed lines from a  file  while  otherwise
     leaving  the file alone. It is smart enough to deal with the
     nested ifdefs, comments, single and double quotes of C  syn-
     tax,  but  it does not do any including or interpretation of
     macros. Neither does it strip out comments, though it recog-
     nizes  and  ignores them. You specify which symbols you want
     defined with -D options, and which you want  undefined  with
     -U  options. Lines within those ifdefs will be copied to the
     output, or removed, as appropriate. Any ifdef, ifndef, else,
     and  endif  lines  associated  with  filename  will  also be
     removed.


     ifdefs involving symbols you do not  specify  are  untouched
     and  copied out along with their associated ifdef, else, and
     endiff1 lines.


     If an ifdefX occurs nested inside another ifdefX,  then  the
     inside  ifdef  is treated as if it were an unrecognized sym-
     bol. If the same symbol appears in more than  one  argument,
     only the first occurrence is significant.


     unifdef copies its output to the standard  output  and  will
     take  its input from the standard input if no filename argu-
     ment is given.

OPTIONS
     The following options are supported:

     -c         Complement the normal operation. Lines that would
                have  been  removed  or blanked are retained, and
                vice versa.


     -l         Replace ``lines removed'' lines with blank lines.


     -t         Plain text option. unifdef refrains from attempt-
                ing  to  recognize comments and single and double
                quotes.



SunOS 5.11          Last change: 14 Jan 1992                    1






User Commands                                          unifdef(1)



     -Dname     Lines associated with the defined symbol name.


     -Uname     Lines associated with the undefined symbol name.


     -iDname    Ignore, but print out, lines associated with  the
                defined symbol name. If you use ifdefs to delimit
                non-C lines, such as comments or  code  which  is
                under  construction,  then  you must tell unifdef
                which symbols are used for that purpose  so  that
                it  will not try to parse for quotes and comments
                within them.


     -iUname    Ignore, but print out, lines associated with  the
                undefined symbol name.


EXIT STATUS
     The following exit values are returned:

     0    Successful operation.


     1    Operation failed.


ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWbtool                   
    


SEE ALSO
     diff(1), attributes(5)

DIAGNOSTICS
     Premature EOF    Inappropriate else or endif.









SunOS 5.11          Last change: 14 Jan 1992                    2