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Add built-in custom formatters for time.Time and time.Duration

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This commit is contained in:
gingerBill
2020-09-25 15:47:39 +01:00
parent b42c7f9161
commit 903ba1c5d8
1 changed files with 136 additions and 5 deletions
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core/fmt/fmt.odin
+136 -5
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@@ -1,13 +1,14 @@
package fmt
import "core:runtime"
import "core:os"
import "core:mem"
import "core:math/bits"
import "core:unicode/utf8"
import "core:mem"
import "core:os"
import "core:reflect"
import "core:runtime"
import "core:strconv"
import "core:strings"
import "core:reflect"
import "core:time"
import "core:unicode/utf8"
import "intrinsics"
DEFAULT_BUFFER_SIZE :: #config(FMT_DEFAULT_BUFFER_SIZE, 1<<12);
@@ -1256,6 +1257,18 @@ fmt_opaque :: proc(fi: ^Info, v: any) {
}
fmt_value :: proc(fi: ^Info, v: any, verb: rune) {
write_padded_number :: proc(fi: ^Info, i: i64, width: int) {
n := width-1;
for x := i; x >= 10; x /= 10 {
n -= 1;
}
for in 0..<n {
strings.write_byte(fi.buf, '0');
}
strings.write_i64(fi.buf, i, 10);
}
if v.data == nil || v.id == nil {
strings.write_string(fi.buf, "<nil>");
return;
@@ -1277,6 +1290,124 @@ fmt_value :: proc(fi: ^Info, v: any, verb: rune) {
case runtime.Type_Info_Tuple: // Ignore
case runtime.Type_Info_Named:
// Built-in Custom Formatters for core library types
switch a in v {
case time.Duration:
ffrac :: proc(buf: []byte, v: u64, prec: int) -> (nw: int, nv: u64) {
v := v;
w := len(buf);
print := false;
for i in 0..<prec {
digit := v % 10;
print = print || digit != 0;
if print {
w -= 1;
buf[w] = byte(digit) + '0';
}
v /= 10;
}
if print {
w -= 1;
buf[w] = '.';
}
return w, v;
}
fint :: proc(buf: []byte, v: u64) -> int {
v := v;
w := len(buf);
if v == 0 {
w -= 1;
buf[w] = '0';
} else {
for v > 0 {
w -= 1;
buf[w] = byte(v%10) + '0';
v /= 10;
}
}
return w;
}
buf: [32]byte;
w := len(buf);
u := u64(a);
neg := a < 0;
if neg {
u = -u;
}
if u < u64(time.Second) {
prec: int;
w -= 1;
buf[w] = 's';
w -= 1;
switch {
case u == 0:
strings.write_string(fi.buf, "0s");
return;
case u < u64(time.Microsecond):
prec = 0;
buf[w] = 'n';
case u < u64(time.Millisecond):
prec = 3;
// U+00B5 'µ' micro sign == 0xC2 0xB5
w -= 1; // Need room for two bytes
copy(buf[w:], "µ");
case:
prec = 6;
buf[w] = 'm';
}
w, u = ffrac(buf[:w], u, prec);
w = fint(buf[:w], u);
} else {
w -= 1;
buf[w] = 's';
w, u = ffrac(buf[:w], u, 9);
w = fint(buf[:w], u%60);
u /= 60;
if u > 0 {
w -= 1;
buf[w] = 'm';
w = fint(buf[:w], u%60);
u /= 60;
if u > 0 {
w -= 1;
buf[w] = 'h';
w = fint(buf[:w], u);
}
}
}
if neg {
w -= 1;
buf[w] = '-';
}
strings.write_string(fi.buf, string(buf[w:]));
return;
case time.Time:
t := a;
y, mon, d := time.date(t);
h, min, s := time.clock(t);
ns := i64(t._nsec - (t._nsec/1e9 + time.UNIX_TO_ABSOLUTE)*1e9) % 1e9;
write_padded_number(fi, i64(y), 4);
strings.write_byte(fi.buf, '-');
write_padded_number(fi, i64(mon), 2);
strings.write_byte(fi.buf, '-');
write_padded_number(fi, i64(d), 2);
strings.write_byte(fi.buf, ' ');
write_padded_number(fi, i64(h), 2);
strings.write_byte(fi.buf, ':');
write_padded_number(fi, i64(min), 2);
strings.write_byte(fi.buf, ':');
write_padded_number(fi, i64(s), 2);
strings.write_byte(fi.buf, '.');
write_padded_number(fi, i64(ns), 9);
strings.write_string(fi.buf, " +0000 UTC");
return;
}
#partial switch b in info.base.variant {
case runtime.Type_Info_Struct:
if verb != 'v' {