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/*! \file
* implementation functions for class qtag
*/
# include "qtag.hh"
# include "qmisc.hh"
# include "qexception.hh"
#ifdef NLS
# include <locale.h>
# include <libintl.h>
# define _(s) gettext (s)
#else
# define _(s) (s)
#endif
const u_int32_t qtag::LENGTH = 128;
const u_int32_t qtag::fieldlengths[7] = { 3, 30, 30, 30, 4, 30, 1};
caddr_t qtag::getMap() { return (caddr_t) tag; }
bool qtag::isValid() {
return tag!=0;
}
void qtag::cleanFields() {
if (!tag)
throw qexception(__PRETTY_FUNCTION__,_("tag is invalid"));
int i;
char *p;
i = fieldlengths[ALBUM]-1;
p = tag->album;
while (i>=0 && (p[i]==' ')) p[i--]=0;
i = fieldlengths[ARTIST]-1;
p = tag->artist;
while (i>=0 && (p[i]==' ')) p[i--]=0;
i = fieldlengths[TITLE]-1;
p = tag->title;
while (i>=0 && (p[i]==' ')) p[i--]=0;
}
qtag::qtag (caddr_t p) {
if (strcmpn(p,"TAG",3))
tag = (struct tag*) p;
else
tag = 0;
#ifdef QVERBOSE
if (tag)
cerr << "tag found mapped at address " << p << endl;
#endif
}
qtag::qtag (qfile &f) {
caddr_t p = f.getMap()+f.getSize()-LENGTH;
if (strcmpn(p,"TAG",3))
tag = (struct tag*) p;
else
tag = 0;
#ifdef QVERBOSE
if (tag)
cerr << "tag found mapped at address " << p << endl;
#endif
}
void qtag::get (enum field f, char *str) {
if (!tag)
throw qexception(__PRETTY_FUNCTION__,_("tag is invalid"));
switch (f) {
case TAG: strncpy(str,tag->tagid, fieldlengths[f]); break;
case TITLE: strncpy(str,tag->title, fieldlengths[f]); break;
case ARTIST: strncpy(str,tag->artist, fieldlengths[f]); break;
case ALBUM: strncpy(str,tag->album, fieldlengths[f]); break;
case YEAR: strncpy(str,tag->year, fieldlengths[f]); break;
case COMMENT: strncpy(str,tag->comment,fieldlengths[f]); break;
case GENRE: strncpy(str,tag->genre, fieldlengths[f]); break;
default: // this should never happen...
throw qexception(__PRETTY_FUNCTION__,_("quelcom internal error"));
}
}
void qtag::set (enum field f, char *str) {
if (!tag)
throw qexception(__PRETTY_FUNCTION__,_("tag is invalid"));
switch (f) {
case TAG: strncpy(tag->tagid, str,fieldlengths[f]); break;
case TITLE: strncpy(tag->title, str,fieldlengths[f]); break;
case ARTIST: strncpy(tag->artist, str,fieldlengths[f]); break;
case ALBUM: strncpy(tag->album, str,fieldlengths[f]); break;
case YEAR: strncpy(tag->year, str,fieldlengths[f]); break;
case COMMENT: strncpy(tag->comment,str,fieldlengths[f]); break;
case GENRE: strncpy(tag->genre, str,fieldlengths[f]); break;
default: // this should never happen...
throw qexception(__PRETTY_FUNCTION__,_("quelcom internal error"));
}
}
void qtag::print (ostream *os) {
os->form ("%-0.30s - %-0.30s - %-0.30s",tag->artist,tag->album,tag->title);
}
ostream &operator<<(ostream &os, qtag &t) {
t.print(&os);
return os;
}
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