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fmt: allow uppercase prefix to be parsed in std.fmt.parseInt()

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std.fmt.parseHexFloat allow both 0x and 0X as prefix, so in order to
keep things consistent. This commit modifies std.fmt.parseWithSign to
check for the prefix case insensitively in order to allow both upper
case and lower case prefix.

This change now allows: 0O, 0B and 0X as prefixes for parsing.
This commit is contained in:
iddev5 2022-02-15 23:11:52 +05:30 committed by Jakub Konka
parent 5283a52af5
commit 77e5b042a0
1 changed files with 4 additions and 1 deletions
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5
lib/std/fmt.zig
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@ -1716,14 +1716,17 @@ test "parseInt" {
try std.testing.expect((try parseInt(i32, "1_1_1", 0)) == 111);
try std.testing.expect((try parseInt(i32, "1_1_1", 0)) == 111);
try std.testing.expect((try parseInt(i32, "+0b111", 0)) == 7);
try std.testing.expect((try parseInt(i32, "+0B111", 0)) == 7);
try std.testing.expect((try parseInt(i32, "+0b1_11", 0)) == 7);
try std.testing.expect((try parseInt(i32, "+0o111", 0)) == 73);
try std.testing.expect((try parseInt(i32, "+0O111", 0)) == 73);
try std.testing.expect((try parseInt(i32, "+0o11_1", 0)) == 73);
try std.testing.expect((try parseInt(i32, "+0x111", 0)) == 273);
try std.testing.expect((try parseInt(i32, "-0b111", 0)) == -7);
try std.testing.expect((try parseInt(i32, "-0b11_1", 0)) == -7);
try std.testing.expect((try parseInt(i32, "-0o111", 0)) == -73);
try std.testing.expect((try parseInt(i32, "-0x111", 0)) == -273);
try std.testing.expect((try parseInt(i32, "-0X111", 0)) == -273);
try std.testing.expect((try parseInt(i32, "-0x1_11", 0)) == -273);
// bare binary/octal/decimal prefix is invalid
@ -1747,7 +1750,7 @@ fn parseWithSign(
buf_radix = 10;
// Detect the radix by looking at buf prefix.
if (buf.len > 2 and buf[0] == '0') {
switch (buf[1]) {
switch (std.ascii.toLower(buf[1])) {
'b' => {
buf_radix = 2;
buf_start = buf[2..];