150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/* misc.c - miscellaneous functions
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* Copyright (C) 2000-2004 Jason Jordan <shnutils@freeshell.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* $Id$
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include "shorten.h"
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void shn_snprintf(char *dest,int maxlen,char *formatstr, ...)
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/* acts like snprintf, but makes 100% sure the string is NULL-terminated */
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{
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va_list args;
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va_start(args,formatstr);
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shn_vsnprintf(dest,maxlen,formatstr,args);
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dest[maxlen-1] = 0;
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va_end(args);
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}
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int shn_filename_contains_a_dot(char *filename)
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{
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char *slash,*dot;
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dot = strrchr(filename,'.');
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if (!dot)
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return 0;
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slash = strrchr(filename,'/');
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if (!slash)
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return 1;
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if (slash < dot)
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return 1;
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else
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return 0;
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}
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char *shn_get_base_filename(char *filename)
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{
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char *b,*e,*p,*base;
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b = strrchr(filename,'/');
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if (b)
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b++;
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else
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b = filename;
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e = strrchr(filename,'.');
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if (e < b)
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e = filename + strlen(filename);
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if (NULL == (base = malloc((e - b + 1) * sizeof(char))))
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{
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fprintf(stderr, "Could not allocate memory for base filename");
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return NULL;
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}
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for (p=b;p<e;p++)
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*(base + (p - b)) = *p;
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*(base + (p - b)) = '\0';
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return base;
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}
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char *shn_get_base_directory(char *filename)
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{
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char *e,*p,*base;
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e = strrchr(filename,'/');
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if (!e)
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e = filename;
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if (NULL == (base = malloc((e - filename + 1) * sizeof(char))))
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{
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fprintf(stderr, "Could not allocate memory for base directory");
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return NULL;
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}
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for (p=filename;p<e;p++)
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*(base + (p - filename)) = *p;
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*(base + (p - filename)) = '\0';
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return base;
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}
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void shn_length_to_str(shn_file *info)
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/* converts length of file to a string in m:ss or m:ss.ff format */
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{
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ulong newlength,rem1,rem2,frames,ms;
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double tmp;
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if (PROB_NOT_CD(info->wave_header)) {
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newlength = (ulong)info->wave_header.exact_length;
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tmp = info->wave_header.exact_length - (double)((ulong)info->wave_header.exact_length);
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ms = (ulong)((tmp * 1000.0) + 0.5);
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if (1000 == ms) {
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ms = 0;
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newlength++;
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}
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shn_snprintf(info->wave_header.m_ss,16,"%lu:%02lu.%03lu",newlength/60,newlength%60,ms);
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}
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else {
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newlength = info->wave_header.length;
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rem1 = info->wave_header.data_size % CD_RATE;
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rem2 = rem1 % CD_BLOCK_SIZE;
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frames = rem1 / CD_BLOCK_SIZE;
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if (rem2 >= (CD_BLOCK_SIZE / 2))
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frames++;
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if (frames == CD_BLOCKS_PER_SEC) {
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frames = 0;
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newlength++;
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}
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shn_snprintf(info->wave_header.m_ss,16,"%lu:%02lu.%02lu",newlength/60,newlength%60,frames);
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}
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}
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