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/*********************************************************************
Example source code for using the argtable2 library to implement:
rm [-dfirv] [--help] [--version] <file> [<file>]...
This file is part of the argtable2 library.
Copyright (C) 1998-2001,2003-2011 Stewart Heitmann
sheitmann@users.sourceforge.net
The argtable2 library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This software is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
**********************************************************************/
#include "argtable2.h"
/* Here we only simulate the rm functionality */
void mymain(int d, int f, int i, int r, int v, const char** files, int nfiles)
{
int j;
/* if verbose option was given then display all option settings */
if (v)
{
printf("remove directories = %s\n", ((d)?"YES":"NO"));
printf("force removal = %s\n", ((f)?"YES":"NO"));
printf("interactive mode = %s\n", ((i)?"YES":"NO"));
printf("recurse directories = %s\n", ((r)?"YES":"NO"));
printf("verbose messages = %s\n", ((v)?"YES":"NO"));
}
/* print the filenames that would be deleted if this really was the "rm" function */
for (j=0; j<nfiles; j++)
printf("unlinking \"%s\"\n", files[j]);
printf("%d files total\n",nfiles);
}
int main(int argc, char **argv)
{
const char* progname = "rm";
struct arg_lit *dir = arg_lit0("d", "directory", "unlink file(s), even if it is a non-empty directory");
struct arg_rem *dir2 = arg_rem( NULL, "(super-user only)");
struct arg_lit *force = arg_lit0("f", "force", "ignore nonexistant files, never prompt");
struct arg_lit *inter = arg_lit0("i", "interactive", "prompt before any removal");
struct arg_lit *recur = arg_lit0("rR","recursive", "remove the contents of directories recursively");
struct arg_lit *verb = arg_lit0("v", "verbose", "explain what is being done");
struct arg_lit *help = arg_lit0(NULL,"help", "print this help and exit");
struct arg_lit *vers = arg_lit0(NULL,"version", "print version information and exit");
struct arg_file *files = arg_filen(NULL,NULL,NULL,1,argc+2,NULL);
struct arg_end *end = arg_end(20);
void* argtable[] = {dir,dir2,force,inter,recur,verb,help,vers,files,end};
int exitcode=0;
int nerrors;
/* verify the argtable[] entries were allocated sucessfully */
if (arg_nullcheck(argtable) != 0)
{
/* NULL entries were detected, some allocations must have failed */
printf("%s: insufficient memory\n",progname);
exitcode=1;
goto exit;
}
/* Parse the command line as defined by argtable[] */
nerrors = arg_parse(argc,argv,argtable);
/* special case: '--help' takes precedence over error reporting */
if (help->count > 0)
{
printf("Usage: %s", progname);
arg_print_syntax(stdout,argtable,"\n");
printf("Remove (unlink) the specified file(s).\n\n");
arg_print_glossary(stdout,argtable," %-20s %s\n");
printf("\nReport bugs to <no-one> as this is just an example program.\n");
exitcode=0;
goto exit;
}
/* special case: '--version' takes precedence error reporting */
if (vers->count > 0)
{
printf("'%s' example program for the \"argtable\" command line argument parser.\n",progname);
printf("September 2003, Stewart Heitmann\n");
exitcode=0;
goto exit;
}
/* If the parser returned any errors then display them and exit */
if (nerrors > 0)
{
/* Display the error details contained in the arg_end struct.*/
arg_print_errors(stdout,end,progname);
printf("Try '%s --help' for more information.\n",progname);
exitcode=1;
goto exit;
}
/* command line options are all ok, now perform the "rm" functionality */
mymain(dir->count, force->count, inter->count, recur->count, verb->count, files->filename, files->count);
exit:
/* deallocate each non-null entry in argtable[] */
arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
return exitcode;
}
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