dockapps/wmradio/stationnames.c
Doug Torrance cd4985a5cb wmradio: Add version 0.9 to repository.
Obtained from
ftp://ftp.afterstep.org/stable/rpms/misc-tarballs/wmradio-0.9.tgz
2016-11-28 09:01:16 +00:00

160 lines
3.6 KiB
C

/*
* Copyright (C) 12 Jun 2003 Tomas Cermak
*
* This file is part of wmradio program.
*
* 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.
*/
#include "stationnames.h"
#include "rc.h"
#include <string.h>
#include <stdlib.h>
#include <math.h>
#define STATION_NAMES_INTERVAL 0.03
char *freqtostr(int freq)
{
static char buffer[10];
sprintf(buffer, "%i.%.2i\n", freq / 100,freq % 100);
return buffer;
}
int ato100i(char *str)
{
char *p,*q;
int result,tmp;
p = strstr(str,".");
if(!p) {
return atoi(str) * 100;
}
q = p; q++;
*p = 0;
result = atoi(str) * 100;
tmp = atoi(q);
*p = '.';
switch(strlen(q)) {
case 1:
result += 10 * tmp;
break;
case 2:
result += tmp;
}
return result;
}
IniVariable *station_find_by_name(char *name)
{
return rc_get_variable_ini_variable(SECTION_NAMES,name);
}
IniVariable *station_find_by_freq(int freq)
{
IniSection *section;
IniVariable *variable;
List *item;
int cfreq;
section = rc_get_section(SECTION_NAMES);
if(!section) return NULL;
for(item = section->variables; item; item = item->next) {
variable = item->data;
cfreq = ato100i(variable->value);
if((cfreq > freq - STATION_NAMES_INTERVAL) &&(cfreq < freq + STATION_NAMES_INTERVAL))
return variable;
}
return NULL;
}
void station_add(char *name, int freq)
{
rc_set_variable(SECTION_NAMES,name,freqtostr(freq));
}
char *station_get_freq_name(int freq)
{
IniVariable *variable;
variable = station_find_by_freq(freq);
if(!variable) return NULL;
return variable->name;
}
void station_set_freq_name(int freq, char *name)
{
rc_set_variable(SECTION_NAMES,name,freqtostr(freq));
}
List *station_nearest(int freq)
{
IniSection *section;
List *item,*current;
IniVariable *item_var;
int delta;
section = rc_get_section(SECTION_NAMES);
if(! section ) return NULL;
item = current = section -> variables;
if(!item) return NULL;
item_var = item->data;
delta = abs(freq - ato100i(item_var->value));
while(item) {
item_var = item->data;
if(abs(freq - ato100i(item_var->value)) < delta) {
current = item;
delta = abs(freq - ato100i(item_var->value));
}
item = item->next;
}
return current;
}
int station_next_freq(int freq)
{
IniVariable *item_var;
List *item;
item = station_nearest(freq);
if(!item) return freq;
if(item->next) {
item_var = item->next->data;
return ato100i(item_var->value);
}
while(item->prev) item = item->prev;
item_var = item->data;
return ato100i(item_var->value);
}
int station_prev_freq(int freq)
{
IniVariable *item_var;
List *item;
item = station_nearest(freq);
if(!item) return freq;
if(item->prev) {
item_var = item->prev->data;
return ato100i(item_var->value);
}
while(item->next) item = item->next;
item_var = item->data;
return ato100i(item_var->value);
}