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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 3.2 2013/04/11 10:24:05 kls Exp $
*/
#include "sources.h"
// --- cSource ---------------------------------------------------------------
cSource::cSource(void)
{
code = stNone;
description = NULL;
}
cSource::cSource(char Source, const char *Description)
{
code = int(Source) << 24;
description = strdup(Description);
}
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;
}
int cSource::Position(int Code)
{
int n = (Code & st_Pos);
if (n > 0x00007FFF)
n |= 0xFFFF0000;
return n;
}
cString cSource::ToString(int Code)
{
char buffer[16];
char *q = buffer;
*q++ = (Code & st_Mask) >> 24;
if (int n = Position(Code)) {
q += snprintf(q, sizeof(buffer) - 2, "%u.%u", abs(n) / 10, abs(n) % 10); // can't simply use "%g" here since the silly 'locale' messes up the decimal point
*q++ = (n < 0) ? 'W' : 'E';
}
*q = 0;
return buffer;
}
int cSource::FromString(const char *s)
{
if (!isempty(s)) {
if ('A' <= *s && *s <= 'Z') {
int code = int(*s) << 24;
if (code == stSat) {
int pos = 0;
bool dot = false;
bool neg = false;
while (*++s) {
switch (*s) {
case '0' ... '9': pos *= 10;
pos += *s - '0';
break;
case '.': dot = true;
break;
case 'W': neg = true; // fall through to 'E'
case 'E': if (!dot)
pos *= 10;
break;
default: esyslog("ERROR: unknown source character '%c'", *s);
return stNone;
}
}
if (neg)
pos = -pos;
code |= (pos & st_Pos);
}
return code;
}
else
esyslog("ERROR: unknown source key '%c'", *s);
}
return stNone;
}
int cSource::FromData(eSourceType SourceType, int Position, bool East)
{
int code = SourceType;
if (SourceType == stSat) {
if (!East)
Position = -Position;
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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