127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/*
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* Id: $Id: utils.c,v 1.3 2005/02/04 18:12:01 bwalle Exp $
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* -------------------------------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; You may only use
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* version 2 of the License, you have no option to use any other version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with this program; if
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* not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* -------------------------------------------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#include <locale.h>
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifndef BUFSIZ
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#define BUFSIZ 512
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#endif
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/* ---------------------------------------------------------------------------------------------- */
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unsigned long min_array( unsigned long array[], int size )
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{
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int i;
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unsigned long min = array[0];
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for (i = 1; i < size; i++)
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{
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if (array[i] < min)
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{
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min = array[i];
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}
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}
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return min;
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}
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/* ---------------------------------------------------------------------------------------------- */
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unsigned long max_array( unsigned long array[], int size )
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{
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int i;
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unsigned long max = array[0];
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for (i = 1; i < size; i++)
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{
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if( array[i] > max )
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{
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max = array[i];
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}
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}
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return max;
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}
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/* ---------------------------------------------------------------------------------------------- */
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char* format_with_thousandssep(char* string, int stringsize, double number, int digits)
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{
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char* str = string;
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char buffer[BUFSIZ], formatstring[BUFSIZ];
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char* bufptr = buffer;
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unsigned int i;
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int numberOfIntegerChars, count;
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struct lconv* localeinfo = localeconv();
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int grouping = (int)localeinfo->grouping[0] == 0 ? INT_MAX : (int)localeinfo->grouping[0];
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/* sensible value for digits */
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if (digits < 0 || digits >= 10)
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{
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digits = 2;
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}
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snprintf(formatstring, BUFSIZ, "%%.%df", digits);
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snprintf(buffer, BUFSIZ, formatstring, number);
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/* get the number of integer characters */
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count = numberOfIntegerChars = ( digits > 0
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? ( strstr( buffer, localeinfo->decimal_point ) - buffer )
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: strlen( buffer ) );
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/* check for length */
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if( numberOfIntegerChars / grouping + (int)strlen( buffer ) > stringsize )
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{
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return NULL;
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}
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/* insert the thousands separator */
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while (*bufptr != 0 && *bufptr != localeinfo->decimal_point[0])
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{
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if (count % grouping == 0 && count != numberOfIntegerChars)
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{
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for (i = 0; i < strlen( localeinfo->thousands_sep ); i++)
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{
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*str++ = localeinfo->thousands_sep[i];
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}
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}
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*str++ = *bufptr++;
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count--;
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}
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/* Copy the rest */
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while (digits > 0 && *bufptr != 0)
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{
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*str++ = *bufptr++;
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}
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/* terminate with 0 finally */
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*str = 0;
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return string;
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}
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