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/*********************************************************************

This file is part of the argtable2 library.

Copyright (C) 1998-2001,2003-2008 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.

**********************************************************************/

/* config.h must be included before anything else */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

/* #ifdef HAVE_STDLIB_H */

#include <stdlib.h>

/* #endif */

#include "argtable2.h"

static void resetfn(struct arg_end *parent)

    {

    /*printf("%s:resetfn(%p)\n",__FILE__,parent);*/

    parent->count = 0;

    }

static void errorfn(void *parent, FILE *fp, int error, const char *argval, const char *progname)

    {

    progname = progname ? progname : "";

    argval = argval ? argval : "";

    fprintf(fp,"%s: ",progname);

    switch(error)

        {

        case ARG_ELIMIT:

            fputs("too many errors to display",fp);

            break;

        case ARG_EMALLOC:

            fputs("insufficent memory",fp);

            break;

        case ARG_ENOMATCH:

            fprintf(fp,"unexpected argument \"%s\"",argval);

            break;

        case ARG_EMISSARG:

            fprintf(fp,"option \"%s\" requires an argument",argval);

            break;

        case ARG_ELONGOPT:

            fprintf(fp,"invalid option \"%s\"",argval);

            break;

        default:

            fprintf(fp,"invalid option \"-%c\"",error);

            break;

        }

    fputc('\n',fp);

    }

struct arg_end* arg_end(int maxcount)

    {

    size_t nbytes;

    struct arg_end *result;

    nbytes = sizeof(struct arg_end)

           + maxcount * sizeof(int)             /* storage for int error[maxcount] array*/

           + maxcount * sizeof(void*)           /* storage for void* parent[maxcount] array */

           + maxcount * sizeof(char*);          /* storage for char* argval[maxcount] array */

    result = (struct arg_end*)malloc(nbytes);

    if (result)

        {

        /* init the arg_hdr struct */

        result->hdr.flag      = ARG_TERMINATOR;

        result->hdr.shortopts = NULL;

        result->hdr.longopts  = NULL;

        result->hdr.datatype  = NULL;

        result->hdr.glossary  = NULL;

        result->hdr.mincount  = 1;

        result->hdr.maxcount  = maxcount;

        result->hdr.parent    = result;

        result->hdr.resetfn   = (arg_resetfn*)resetfn;

        result->hdr.scanfn    = NULL;

        result->hdr.checkfn   = NULL;

        result->hdr.errorfn   = errorfn;

        /* store error[maxcount] array immediately after struct arg_end */

        result->error = (int*)(result+1);

        /* store parent[maxcount] array immediately after error[] array */

        result->parent = (void**)(result->error + maxcount );

        /* store argval[maxcount] array immediately after parent[] array */

        result->argval = (const char**)(result->parent + maxcount );

        }

    /*printf("arg_end(%d) returns %p\n",maxcount,result);*/

    return result;

    }

void arg_print_errors(FILE* fp, struct arg_end* end, const char* progname)

    {

    int i;

    /*printf("arg_errors()\n");*/

    for (i=0; i<end->count; i++)

        {

        struct arg_hdr *errorparent = (struct arg_hdr *)(end->parent[i]);

        if (errorparent->errorfn)

            errorparent->errorfn(end->parent[i],fp,end->error[i],end->argval[i],progname);

        }

    }