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/* misc.c - miscellaneous functions
* Copyright (C) 2000-2007 Jason Jordan <shnutils@freeshell.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* $Id: misc.c,v 1.14 2007/03/23 05:49:48 jason Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "shorten.h"
void shn_snprintf(char *dest,int maxlen,char *formatstr, ...)
/* acts like snprintf, but makes 100% sure the string is NULL-terminated */
{
va_list args;
va_start(args,formatstr);
shn_vsnprintf(dest,maxlen,formatstr,args);
dest[maxlen-1] = 0;
va_end(args);
}
int shn_filename_contains_a_dot(const char *filename)
{
char *slash,*dot;
dot = strrchr(filename,'.');
if (!dot)
return 0;
slash = strrchr(filename,'/');
if (!slash)
return 1;
if (slash < dot)
return 1;
else
return 0;
}
char *shn_get_base_filename(const char *filename)
{
const char *b,*e,*p;
char *base;
b = strrchr(filename,'/');
if (b)
b++;
else
b = filename;
e = strrchr(filename,'.');
if (e < b)
e = filename + strlen(filename);
if (NULL == (base = malloc((e - b + 1) * sizeof(char))))
{
shn_debug("Could not allocate memory for base filename");
return NULL;
}
for (p=b;p<e;p++)
*(base + (p - b)) = *p;
*(base + (p - b)) = '\0';
return base;
}
char *shn_get_base_directory(const char *filename)
{
const char *e,*p;
char *base;
e = strrchr(filename,'/');
if (!e)
e = filename;
if (NULL == (base = malloc((e - filename + 1) * sizeof(char))))
{
shn_debug("Could not allocate memory for base directory");
return NULL;
}
for (p=filename;p<e;p++)
*(base + (p - filename)) = *p;
*(base + (p - filename)) = '\0';
return base;
}
void shn_length_to_str(shn_file *info)
/* converts length of file to a string in m:ss or m:ss.ff format */
{
ulong newlength,rem1,rem2,frames,ms;
double tmp;
if (PROB_NOT_CD(info->wave_header)) {
newlength = (ulong)info->wave_header.exact_length;
tmp = info->wave_header.exact_length - (double)((ulong)info->wave_header.exact_length);
ms = (ulong)((tmp * 1000.0) + 0.5);
if (1000 == ms) {
ms = 0;
newlength++;
}
shn_snprintf(info->wave_header.m_ss,16,"%lu:%02lu.%03lu",newlength/60,newlength%60,ms);
}
else {
newlength = info->wave_header.length;
rem1 = info->wave_header.data_size % CD_RATE;
rem2 = rem1 % CD_BLOCK_SIZE;
frames = rem1 / CD_BLOCK_SIZE;
if (rem2 >= (CD_BLOCK_SIZE / 2))
frames++;
if (frames == CD_BLOCKS_PER_SEC) {
frames = 0;
newlength++;
}
shn_snprintf(info->wave_header.m_ss,16,"%lu:%02lu.%02lu",newlength/60,newlength%60,frames);
}
}
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