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new file for string functions, starting with num2max5()

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2874 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Daniel Stenberg 2002-11-22 13:00:10 +00:00
parent 6871977d82
commit 5befad0a1b
1 changed files with 67 additions and 0 deletions
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apps/string.c Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "sprintf.h"
#define ONE_KILOBYTE 1024
#define ONE_MEGABYTE (1024*1024)
/* The point of this function would be to return a string of the input data,
but never longer than 5 columns. Add suffix k and M when suitable...
Make sure to have space for 6 bytes in the buffer. 5 letters plus the
terminating zero byte. */
char *num2max5(unsigned int bytes, char *max5)
{
if(bytes < 100000) {
snprintf(max5, 6, "%5d", bytes);
return max5;
}
if(bytes < (9999*ONE_KILOBYTE)) {
snprintf(max5, 6, "%4dk", bytes/ONE_KILOBYTE);
return max5;
}
if(bytes < (100*ONE_MEGABYTE)) {
/* 'XX.XM' is good as long as we're less than 100 megs */
snprintf(max5, 6, "%4d.%0dM",
bytes/ONE_MEGABYTE,
(bytes%ONE_MEGABYTE)/(ONE_MEGABYTE/10) );
return max5;
}
snprintf(max5, 6, "%4dM", bytes/ONE_MEGABYTE);
return max5;
}
#ifdef TEST_MAX5
int main(int argc, char **argv)
{
char buffer[32];
if(argc>1) {
printf("%d => %s\n",
atoi(argv[1]),
num2max5(atoi(argv[1]), buffer));
}
return 0;
}
#endif
/* -----------------------------------------------------------------
* local variables:
* eval: (load-file "../firmware/rockbox-mode.el")
* end:
*/