/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <stdlib.h>
#include "h5diff.h"
#include "h5diff_common.h"

extern int g_Parallel;
extern int g_nTasks;

void parse_input(int argc, const char* argv[], const char** fname1, const char** fname2, const char** objname1, const char** objname2, diff_opt_t* options)
{
    int        i;
    const char *s = NULL;

    /* process the command-line */
    memset(options, 0, sizeof (diff_opt_t));

    /*-------------------------------------------------------------------------
     * initial check of command line options
     *-------------------------------------------------------------------------
     */

    if ( argc==2 && (strcmp("-h",argv[1])==0) ) 
	usage();

    if ( argc<3 ) 
    {
	printf("Number of arguments is only %d\n", argc );
	usage();
    }

    /*-------------------------------------------------------------------------
     * file names are first
     *-------------------------------------------------------------------------
     */
    if ( argc>=3 )
    {
	*fname1 = argv[1];
	*fname2 = argv[2];
    }
    /*-------------------------------------------------------------------------
     * parse command line options
     *-------------------------------------------------------------------------
     */
    for (i=3; i<argc ; i++) 
    {
	/* get the single-letter switches */
	if ( '-'==argv[i][0] )
	{
	    for (s=argv[i]+1; *s; s++) 
	    {
		switch (*s) {
		    default:
			printf("-%s is an invalid option\n", s );
			usage();
			break;
		    case 'h': 
			usage();
			break;
		    case 'v': 
			options->m_verbose = 1;
			break;
		    case 'q': 
			/* use quiet mode; supress the message "0 differences found" */
			options->m_quiet = 1;
			break;
		    case 'r': 
			options->m_report = 1;
			break;
		    case 'd': 
			/* if it is not another option */
			if ( i<argc-1 &&'-' != argv[i+1][0] )
			{
			    options->d=1;
			    if ( check_f_input(argv[i+1])==-1)
			    {
				printf("<-d %s> is not a valid option\n", argv[i+1] );
				usage();
			    }
			    options->delta = atof(argv[i+1]);
			    i++; /* go to next */
			}
			else
			{
			    printf("Not a valid -d option\n");
			    usage();
			}
			break;
		    case 'p': 
			if ( i<argc-1 &&'-' !=argv[i+1][0] )
			{
			    options->p=1;
			    if ( check_f_input(argv[i+1])==-1)
			    {
				printf("<-p %s> is not a valid option\n", argv[i+1] );
				usage();
			    }
			    options->percent = atof(argv[i+1]);
			    i++; /* go to next */
			}
			else
			{
			    printf("Not a valid -p option\n");
			    usage();
			}
			break;
		    case 'n': 
			if ( i<argc-1 && '-' !=argv[i+1][0] )
			{
			    options->n=1;
			    if ( check_n_input(argv[i+1])==-1)
			    {
				printf("<-n %s> is not a valid option\n", argv[i+1] );
				usage();
			    }
			    options->count = atoi(argv[i+1]);
			    i++; /* go to next */
			}
			else
			{
			    printf("Not a valid -n option\n");
			    usage();
			}
			break;
		} /*switch*/
	    } /*for*/ 
	} /*if*/

	else /* not single-letter switches */

	{
	    /* check if it is not a -d, -p parameter */
	    if ( '-'==argv[i-1][0] && ('d'==argv[i-1][1] ||'p'==argv[i-1][1] ))
		continue;
	    else
	    {
		if ( *objname1==NULL )
		    *objname1 = argv[i];
		if ( *objname2==NULL )
		{
		    /* check if we have a second object name */
		    if ( i+1<argc && '-' !=argv[i+1][0] ) {
			/* yes */
			*objname2 = argv[i+1];
			i++; /* go to next */
		    }
		    else
			/* no */
			*objname2 = *objname1;
		} /*objname2*/
	    } /*else*/
	} /*else*/

    }/*for*/
}

void  print_results(hsize_t nfound, diff_opt_t* options)
{
    /*-------------------------------------------------------------------------
     * print how many differences were found
     *-------------------------------------------------------------------------
     */
    if (!options->m_quiet)
    {   
	if (options->cmn_objs==0)
	{   
	    printf("No common objects found. Files are not comparable.\n");
	    if (!options->m_verbose)
		printf("Use -v for a list of objects.\n");
	}
	else
	{   
	    if (!options->err_stat)
	    {   
		print_found(nfound);
	    }
	}
    }
}

/*-------------------------------------------------------------------------
 * Function: check_n_input
 *
 * Purpose: check for valid input
 *
 * Return: 1 for ok, -1 for fail
 *
 * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
 *
 * Date: May 9, 2003
 *
 * Comments:
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
int check_n_input( const char *str )
{
    unsigned i;
    char c;

    for ( i = 0; i < strlen(str); i++)
    {
	c = str[i];
	if ( i==0 )
	{
	    if ( c < 49 || c > 57  ) /* ascii values between 1 and 9 */
		return -1;
	}
	else
	    if ( c < 48 || c > 57  ) /* 0 also */
		return -1;
    }
    return 1;
}

/*-------------------------------------------------------------------------
 * Function: check_f_input
 *
 * Purpose: check for a valid floating point input
 *
 * Return: 1 for ok, -1 for fail
 *
 * Date: May 9, 2003
 *
 * Comments:
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
int check_f_input( const char *str )
{
    double x;

    /* 
       the atof return value on a hexadecimal input is different 
       on some systems; we do a character check for this
     */
    if (strlen(str)>2 && str[0]=='0' && str[1]=='x')
	return -1;

    x=atof(str);
    if (x==0)
	return -1;

    return 1;
}

/*-------------------------------------------------------------------------
 * Function: usage
 *
 * Purpose: print a usage message  
 *
 * Return: void
 *
 *-------------------------------------------------------------------------
 */
void usage(void)
{
    printf("Usage: h5diff file1 file2 [OPTIONS] [obj1[obj2]] \n");
    printf("\n");
    printf("file1             File name of the first HDF5 file\n");
    printf("file2             File name of the second HDF5 file\n");
    printf("[obj1]            Name of an HDF5 object, in absolute path\n");
    printf("[obj2]            Name of an HDF5 object, in absolute path\n");
    printf("[OPTIONS] are:\n");
    printf("[-h]              Print out this information\n");
    printf("[-r]              Report mode. Print the differences\n");
    printf("[-v]              Verbose mode. Print the differences, list of objects, warnings\n");
    printf("[-q]              Quiet mode. Do not do output\n");
    printf("[-n count]        Print difference up to count number\n");
    printf("[-d delta]        Print difference when it is greater than limit delta\n");
    printf("[-p relative]     Print difference when it is greater than a relative limit\n");
    printf("\n");
    printf("Items in [] are optional\n");
    printf("[obj1] and [obj2] are HDF5 objects (datasets, groups or datatypes)\n");
    printf("The 'count' value must be a positive integer\n");
    printf("The 'delta' and 'relative' values must be positive numbers\n");
    printf("The -d compare criteria is |a - b| > delta\n");
    printf("The -p compare criteria is |1 - b/a| > relative\n");
    printf("\n");
    printf("h5diff has four modes of output:\n");
    printf(" Normal mode: print the number of differences found and where they occured\n");
    printf(" Report mode: print the above plus the differences\n");
    printf(" Verbose mode: print the above plus a list of objects and warnings\n");
    printf(" Quiet mode: do not print output (h5diff always returns an exit code of 1 when differences are found)\n");
    printf("\n");
    printf("Examples of use:\n");
    printf("\n");
    printf("1) h5diff file1 file2 /g1/dset1 /g1/dset2\n");
    printf("\n");
    printf("   Compares object '/g1/dset1' in file1 with '/g1/dset2' in file2\n");
    printf("\n");
    printf("2) h5diff file1 file2 /g1/dset1\n");
    printf("\n");
    printf("   Compares object '/g1/dset1' in both files\n");
    printf("\n");
    printf("3) h5diff file1 file2\n");
    printf("\n");
    printf("   Compares all objects in both files\n");
    printf("\n");
    printf("Note)  file1 and file2 can be the same file. Use\n");
    printf("\n");
    printf("   h5diff file1 file1 /g1/dset1 /g1/dset2\n");
    printf("\n");
    printf("   to compare '/g1/dset1' and '/g1/dset2' in the same file\n");
#ifdef H5_HAVE_PARALLEL
    if(g_Parallel)
	h5diff_exit(0);
    else
#endif
    exit(0);
}

/*-------------------------------------------------------------------------
 * Function: h5diff_exit
 *
 * Purpose: dismiss phdiff worker processes and exit
 *
 * Return: none
 *
 * Programmer: Albert Cheng
 * Date: Feb 6, 2005
 *
 * Comments:
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
void h5diff_exit(int status)
{
#ifdef H5_HAVE_PARALLEL
    /* if in parallel mode, dismiss workers, close down MPI, then exit */
    if((g_nTasks > 1) && g_Parallel) {
	phdiff_dismiss_workers();
	MPI_Barrier(MPI_COMM_WORLD);
    }
    if(g_Parallel)
	MPI_Finalize();
#endif
    exit(status);
}