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/*********************************************************************
Example source code for using the argtable2 library to implement:
myprog [-lRv] [-k <int>] [-D MACRO]... [-o <output>] [--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>
int mymain(int l, int R, int k,
const char **defines, int ndefines,
const char *outfile,
int v,
const char **infiles, int ninfiles)
{
int i;
if (l>0) printf("list files (-l)\n");
if (R>0) printf("recurse through directories (-R)\n");
if (v>0) printf("verbose is enabled (-v)\n");
printf("scalar k=%d\n",k);
printf("output is \"%s\"\n", outfile);
for (i=0; i<ndefines; i++)
printf("user defined macro \"%s\"\n",defines[i]);
for (i=0; i<ninfiles; i++)
printf("infile[%d]=\"%s\"\n",i,infiles[i]);
return 0;
}
int main(int argc, char **argv)
{
struct arg_lit *list = arg_lit0("lL",NULL, "list files");
struct arg_lit *recurse = arg_lit0("R",NULL, "recurse through subdirectories");
struct arg_int *repeat = arg_int0("k","scalar",NULL, "define scalar value k (default is 3)");
struct arg_str *defines = arg_strn("D","define","MACRO",0,argc+2, "macro definitions");
struct arg_file *outfile = arg_file0("o",NULL,"<output>", "output file (default is \"-\")");
struct arg_lit *verbose = arg_lit0("v","verbose,debug", "verbose messages");
struct arg_lit *help = arg_lit0(NULL,"help", "print this help and exit");
struct arg_lit *version = arg_lit0(NULL,"version", "print version information and exit");
struct arg_file *infiles = arg_filen(NULL,NULL,NULL,1,argc+2, "input file(s)");
struct arg_end *end = arg_end(20);
void* argtable[] = {list,recurse,repeat,defines,outfile,verbose,help,version,infiles,end};
const char* progname = "myprog";
int nerrors;
int exitcode=0;
/* 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;
}
/* set any command line default values prior to parsing */
repeat->ival[0]=3;
outfile->filename[0]="-";
/* 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("This program demonstrates the use of the argtable2 library\n");
printf("for parsing command line arguments. Argtable accepts integers\n");
printf("in decimal (123), hexadecimal (0xff), octal (0o123) and binary\n");
printf("(0b101101) formats. Suffixes KB, MB and GB are also accepted.\n");
arg_print_glossary(stdout,argtable," %-25s %s\n");
exitcode=0;
goto exit;
}
/* special case: '--version' takes precedence error reporting */
if (version->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;
}
/* special case: uname with no command line options induces brief help */
if (argc==1)
{
printf("Try '%s --help' for more information.\n",progname);
exitcode=0;
goto exit;
}
/* normal case: take the command line options at face value */
exitcode = mymain(list->count, recurse->count, repeat->ival[0],
defines->sval, defines->count,
outfile->filename[0], verbose->count,
infiles->filename, infiles->count);
exit:
/* deallocate each non-null entry in argtable[] */
arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
return exitcode;
}
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