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/*
* sources.c: Source handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: sources.c 2.0 2008/02/10 14:07:26 kls Exp $
*/
#include "sources.h"
#include <ctype.h>
// --- cSource ---------------------------------------------------------------
cSource::cSource(void)
{
code = stNone;
description = NULL;
}
cSource::~cSource()
{
free(description);
}
bool cSource::Parse(const char *s)
{
char *codeBuf = NULL;
if (2 == sscanf(s, "%a[^ ] %a[^\n]", &codeBuf, &description))
code = FromString(codeBuf);
free(codeBuf);
return code != stNone && description && *description;
}
cString cSource::ToString(int Code)
{
char buffer[16];
char *q = buffer;
switch (Code & st_Mask) {
case stCable: *q++ = 'C'; break;
case stSat: *q++ = 'S';
{
int pos = Code & ~st_Mask;
q += snprintf(q, sizeof(buffer) - 2, "%u.%u", (pos & ~st_Neg) / 10, (pos & ~st_Neg) % 10); // can't simply use "%g" here since the silly 'locale' messes up the decimal point
*q++ = (Code & st_Neg) ? 'E' : 'W';
}
break;
case stTerr: *q++ = 'T'; break;
default: *q++ = Code + '0'; // backward compatibility
}
*q = 0;
return buffer;
}
int cSource::FromString(const char *s)
{
int type = stNone;
switch (toupper(*s)) {
case 'C': type = stCable; break;
case 'S': type = stSat; break;
case 'T': type = stTerr; break;
case '0' ... '9': type = *s - '0'; break; // backward compatibility
default: esyslog("ERROR: unknown source key '%c'", *s);
return stNone;
}
int code = type;
if (type == stSat) {
int pos = 0;
bool dot = false;
bool neg = false;
while (*++s) {
switch (toupper(*s)) {
case '0' ... '9': pos *= 10;
pos += *s - '0';
break;
case '.': dot = true;
break;
case 'E': neg = true; // fall through to 'W'
case 'W': if (!dot)
pos *= 10;
break;
default: esyslog("ERROR: unknown source character '%c'", *s);
return stNone;
}
}
if (neg)
pos |= st_Neg;
code |= pos;
}
return code;
}
int cSource::FromData(eSourceType SourceType, int Position, bool East)
{
int code = SourceType;
if (SourceType == stSat) {
if (East)
code |= st_Neg;
code |= (Position & st_Pos);;
}
return code;
}
// --- cSources --------------------------------------------------------------
cSources Sources;
cSource *cSources::Get(int Code)
{
for (cSource *p = First(); p; p = Next(p)) {
if (p->Code() == Code)
return p;
}
return NULL;
}
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