mirror of https://github.com/VDR4Arch/vdr.git
116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
/*
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* sources.c: Source handling
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: sources.c 1.3 2004/12/26 11:58:52 kls Exp $
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*/
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#include "sources.h"
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#include <ctype.h>
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// -- cSource ----------------------------------------------------------------
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cSource::cSource(void)
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{
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code = stNone;
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description = NULL;
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}
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cSource::~cSource()
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{
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free(description);
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}
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bool cSource::Parse(const char *s)
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{
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char *codeBuf = NULL;
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if (2 == sscanf(s, "%a[^ ] %a[^\n]", &codeBuf, &description))
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code = FromString(codeBuf);
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free(codeBuf);
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return code != stNone && description && *description;
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}
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cString cSource::ToString(int Code)
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{
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char buffer[16];
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char *q = buffer;
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switch (Code & st_Mask) {
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case stCable: *q++ = 'C'; break;
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case stSat: *q++ = 'S';
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{
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int pos = Code & ~st_Mask;
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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
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*q++ = (Code & st_Neg) ? 'E' : 'W';
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}
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break;
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case stTerr: *q++ = 'T'; break;
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default: *q++ = Code + '0'; // backward compatibility
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}
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*q = 0;
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return buffer;
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}
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int cSource::FromString(const char *s)
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{
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int type = stNone;
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switch (toupper(*s)) {
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case 'C': type = stCable; break;
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case 'S': type = stSat; break;
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case 'T': type = stTerr; break;
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case '0' ... '9': type = *s - '0'; break; // backward compatibility
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default: esyslog("ERROR: unknown source key '%c'", *s);
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return stNone;
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}
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int code = type;
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if (type == stSat) {
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int pos = 0;
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bool dot = false;
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bool neg = false;
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while (*++s) {
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switch (toupper(*s)) {
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case '0' ... '9': pos *= 10;
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pos += *s - '0';
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break;
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case '.': dot = true;
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break;
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case 'E': neg = true; // fall through to 'W'
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case 'W': if (!dot)
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pos *= 10;
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break;
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default: esyslog("ERROR: unknown source character '%c'", *s);
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return stNone;
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}
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}
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if (neg)
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pos |= st_Neg;
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code |= pos;
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}
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return code;
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}
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int cSource::FromData(eSourceType SourceType, int Position, bool East)
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{
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int code = SourceType;
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if (SourceType == stSat) {
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if (East)
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code |= st_Neg;
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code |= (Position & st_Pos);;
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}
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return code;
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}
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// -- cSources ---------------------------------------------------------------
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cSources Sources;
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cSource *cSources::Get(int Code)
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{
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for (cSource *p = First(); p; p = Next(p)) {
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if (p->Code() == Code)
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return p;
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}
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return NULL;
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}
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