const char *comments_get_albumartist(const struct keyval *comments)
{
const char *val = keyvals_get_val(comments, "albumartist");
if (!val || strcmp(val, "") == 0)
val = keyvals_get_val(comments, "artist");
return val;
}
int track_is_va_compilation(const struct keyval *comments)
{
const char *c, *aa;
aa = keyvals_get_val(comments, "albumartist");
if (aa)
return is_various_artists(aa);
c = keyvals_get_val(comments, "compilation");
return c && is_freeform_true(c);
}
/* Return date as an integer in the form YYYYMMDD, for sorting purposes.
* This function is not year 10000 compliant. */
int comments_get_date(const struct keyval *comments, const char *key)
{
const char *val;
char *endptr;
int year, month, day;
long int ival;
val = keyvals_get_val(comments, key);
if (val == NULL)
return -1;
year = strtol(val, &endptr, 10);
/* Looking for a four-digit number */
if (year < 1000 || year > 9999)
return -1;
ival = year * 10000;
if (*endptr == '-' || *endptr == ' ' || *endptr == '/') {
month = strtol(endptr+1, &endptr, 10);
if (month < 1 || month > 12)
return ival;
ival += month * 100;
}
if (*endptr == '-' || *endptr == ' ' || *endptr == '/') {
day = strtol(endptr+1, &endptr, 10);
if (day < 1 || day > 31)
return ival;
ival += day;
}
return ival;
}
const char *comments_get_artistsort(const struct keyval *comments)
{
const char *val;
if (track_is_va_compilation(comments))
return NULL;
val = keyvals_get_val(comments, "albumartistsort");
if (!track_is_compilation(comments)) {
if (!val || strcmp(val, "") == 0)
val = keyvals_get_val(comments, "artistsort");
}
if (!val || strcmp(val, "") == 0)
return NULL;
return val;
}
int track_is_compilation(const struct keyval *comments)
{
const char *c, *a, *aa;
c = keyvals_get_val(comments, "compilation");
if (c && is_freeform_true(c))
return 1;
aa = keyvals_get_val(comments, "albumartist");
if (aa && is_various_artists(aa))
return 1;
a = keyvals_get_val(comments, "artist");
if (aa && a && !u_strcase_equal(aa, a))
return 1;
return 0;
}
int comments_get_int(const struct keyval *comments, const char *key)
{
const char *val;
long int ival;
val = keyvals_get_val(comments, key);
if (val == NULL)
return -1;
while (*val && !(*val >= '0' && *val <= '9'))
val++;
if (str_to_int(val, &ival) == -1)
return -1;
return ival;
}
double comments_get_double(const struct keyval *comments, const char *key)
{
const char *val;
char *end;
double d;
val = keyvals_get_val(comments, key);
if (!val || strcmp(val, "") == 0)
goto error;
d = strtod(val, &end);
if (val == end)
goto error;
return d;
error:
return strtod("NAN", NULL);
}