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%e and %g support in fmt.printf

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This commit is contained in:
gingerBill
2019-03-15 23:13:06 +00:00
parent 716373836c
commit 332e598357
3 changed files with 126 additions and 26 deletions
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core/fmt/fmt.odin
+34 -3
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@@ -551,9 +551,6 @@ _pad :: proc(fi: ^Info, s: string) {
fmt_float :: proc(fi: ^Info, v: f64, bit_size: int, verb: rune) {
switch verb {
// case 'e', 'E', 'f', 'F', 'g', 'G', 'v':
// case 'f', 'F', 'v':
case 'f', 'F', 'v':
prec: int = 3;
if fi.prec_set do prec = fi.prec;
@@ -588,6 +585,40 @@ fmt_float :: proc(fi: ^Info, v: f64, bit_size: int, verb: rune) {
_pad(fi, str[1:]);
}
case 'e', 'E':
prec: int = 3;
if fi.prec_set do prec = fi.prec;
buf: [386]byte;
str := strconv.append_float(buf[1:], v, 'e', prec, bit_size);
str = string(buf[:len(str)+1]);
if str[1] == '+' || str[1] == '-' {
str = str[1:];
} else {
str[0] = '+';
}
if fi.space && !fi.plus && str[0] == '+' {
str[0] = ' ';
}
if len(str) > 1 && (str[1] == 'N' || str[1] == 'I') {
strings.write_string(fi.buf, str);
return;
}
if fi.plus || str[0] != '+' {
if fi.zero && fi.width_set && fi.width > len(str) {
strings.write_byte(fi.buf, str[0]);
fmt_write_padding(fi, fi.width - len(str));
strings.write_string(fi.buf, str[1:]);
} else {
_pad(fi, str);
}
} else {
_pad(fi, str[1:]);
}
case:
fmt_bad_verb(fi, verb);
}