static void checkId(string id)
{
if (id.Length == 0)
{
throw ParseErr.make("Invalid unit id length 0").val;
}
for (int i = 0; i < id.Length; ++i)
{
int c = id[i];
if (FanInt.isAlpha(c) || c == '_' || c == '%' || c == '$' || c == '/' || c > 128)
{
continue;
}
throw ParseErr.make("Invalid unit id " + id + " (invalid char '" + (char)c + "')").val;
}
}
//////////////////////////////////////////////////////////////////////////
// Formatting
//////////////////////////////////////////////////////////////////////////
public string format()
{
StringBuilder s = new StringBuilder();
int len = pattern.Length;
for (int i = 0; i < len; ++i)
{
// character
int c = pattern[i];
// literals
if (c == '\'')
{
while (true)
{
++i;
if (i >= len)
{
throw ArgErr.make("Invalid pattern: unterminated literal").val;
}
c = pattern[i];
if (c == '\'')
{
break;
}
s.Append((char)c);
}
continue;
}
// character count
int n = 1;
while (i + 1 < len && pattern[i + 1] == c)
{
++i; ++n;
}
// switch
bool invalidNum = false;
switch (c)
{
case 'Y':
int y = this.year;
switch (n)
{
case 2: y %= 100; if (y < 10)
{
s.Append('0');
}
s.Append(y); break;
case 4: s.Append(y); break;
default: invalidNum = true; break;
}
break;
case 'M':
if (mon == null)
{
throw ArgErr.make("Month not available").val;
}
switch (n)
{
case 4:
s.Append(mon.full(locale()));
break;
case 3:
s.Append(mon.abbr(locale()));
break;
case 2: if (mon.ordinal() + 1 < 10L)
{
s.Append('0');
}
s.Append(mon.ordinal() + 1); break;
case 1: s.Append(mon.ordinal() + 1); break;
default: invalidNum = true; break;
}
break;
case 'D':
switch (n)
{
case 3: s.Append(day).Append(daySuffix(day)); break;
case 2: if (day < 10)
{
s.Append('0');
}
s.Append(day); break;
case 1: s.Append(day); break;
default: invalidNum = true; break;
}
break;
case 'W':
if (weekday == null)
{
throw ArgErr.make("Weekday not available").val;
}
switch (n)
{
case 4:
s.Append(weekday.full(locale()));
break;
case 3:
s.Append(weekday.abbr(locale()));
break;
default: invalidNum = true; break;
}
break;
case 'V':
int woy = weekOfYear();
if (woy < 1)
{
throw ArgErr.make("Week of year not available").val;
}
switch (n)
{
case 3: s.Append(woy).Append(daySuffix(woy)); break;
case 2: if (woy < 10)
{
s.Append('0');
}
s.Append(woy); break;
case 1: s.Append(woy); break;
default: invalidNum = true; break;
}
break;
case 'h':
case 'k':
int h = this.hour;
if (c == 'k')
{
if (h == 0)
{
h = 12;
}
else if (h > 12)
{
h -= 12;
}
}
switch (n)
{
case 2: if (h < 10)
{
s.Append('0');
}
s.Append(h); break;
case 1: s.Append(h); break;
default: invalidNum = true; break;
}
break;
case 'm':
switch (n)
{
case 2: if (min < 10)
{
s.Append('0');
}
s.Append(min); break;
case 1: s.Append(min); break;
default: invalidNum = true; break;
}
break;
case 's':
switch (n)
{
case 2: if (sec < 10)
{
s.Append('0');
}
s.Append(sec); break;
case 1: s.Append(sec); break;
default: invalidNum = true; break;
}
break;
case 'S':
if (sec != 0 || ns != 0)
{
switch (n)
{
case 2: if (sec < 10)
{
s.Append('0');
}
s.Append(sec); break;
case 1: s.Append(sec); break;
default: invalidNum = true; break;
}
}
break;
case 'a':
switch (n)
{
case 1: s.Append(hour < 12 ? "a" : "p"); break;
case 2: s.Append(hour < 12 ? "am" : "pm"); break;
default: invalidNum = true; break;
}
break;
case 'A':
switch (n)
{
case 1: s.Append(hour < 12 ? "A" : "P"); break;
case 2: s.Append(hour < 12 ? "AM" : "PM"); break;
default: invalidNum = true; break;
}
break;
case 'f':
case 'F':
int req = 0, opt = 0; // required, optional
if (c == 'F')
{
opt = n;
}
else
{
req = n;
while (i + 1 < len && pattern[i + 1] == 'F')
{
++i; ++opt;
}
}
int frac = ns;
for (int x = 0, tenth = 100000000; x < 9; ++x)
{
if (req > 0)
{
req--;
}
else
{
if (frac == 0 || opt <= 0)
{
break;
}
opt--;
}
s.Append(frac / tenth);
frac %= tenth;
tenth /= 10;
}
break;
case 'z':
TimeZone.Rule rule = tz.rule(year);
switch (n)
{
case 1:
int offset = rule.offset;
if (dst)
{
offset += rule.dstOffset;
}
if (offset == 0)
{
s.Append('Z'); break;
}
if (offset < 0)
{
s.Append('-'); offset = -offset;
}
else
{
s.Append('+');
}
int zh = offset / 3600;
int zm = (offset % 3600) / 60;
if (zh < 10)
{
s.Append('0');
}
s.Append(zh).Append(':');
if (zm < 10)
{
s.Append('0');
}
s.Append(zm);
break;
case 3:
s.Append(dst ? rule.dstAbbr : rule.stdAbbr);
break;
case 4:
s.Append(tz.name());
break;
default:
invalidNum = true;
break;
}
break;
default:
if (FanInt.isAlpha(c))
{
throw ArgErr.make("Invalid pattern: unsupported char '" + (char)c + "'").val;
}
// check for symbol skip
if (i + 1 < len)
{
int next = pattern[i + 1];
// don't display symbol between ss.FFF if fractions is zero
if (next == 'F' && ns == 0)
{
break;
}
// don't display symbol between mm:SS if secs is zero
if (next == 'S' && sec == 0 && ns == 0)
{
break;
}
}
s.Append((char)c);
break;
}
// if invalid number of characters
if (invalidNum)
{
throw ArgErr.make("Invalid pattern: unsupported num of '" + (char)c + "' (x" + n + ")").val;
}
}
return(s.ToString());
}
