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add std.fmt.hex

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converts an unsigned integer into an array
This commit is contained in:
Andrew Kelley
2024-07-19 17:39:55 -07:00
parent 9d00f69be5
commit eb4028bf30
9 changed files with 55 additions and 47 deletions
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15
lib/std/Build.zig
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@@ -2522,7 +2522,7 @@ pub const InstallDir = union(enum) {
/// function.
pub fn makeTempPath(b: *Build) []const u8 {
const rand_int = std.crypto.random.int(u64);
const tmp_dir_sub_path = "tmp" ++ fs.path.sep_str ++ hex64(rand_int);
const tmp_dir_sub_path = "tmp" ++ fs.path.sep_str ++ std.fmt.hex(rand_int);
const result_path = b.cache_root.join(b.allocator, &.{tmp_dir_sub_path}) catch @panic("OOM");
b.cache_root.handle.makePath(tmp_dir_sub_path) catch |err| {
std.debug.print("unable to make tmp path '{s}': {s}\n", .{
@@ -2532,18 +2532,9 @@ pub fn makeTempPath(b: *Build) []const u8 {
return result_path;
}
/// There are a few copies of this function in miscellaneous places. Would be nice to find
/// a home for them.
/// Deprecated; use `std.fmt.hex` instead.
pub fn hex64(x: u64) [16]u8 {
const hex_charset = "0123456789abcdef";
var result: [16]u8 = undefined;
var i: usize = 0;
while (i < 8) : (i += 1) {
const byte: u8 = @truncate(x >> @as(u6, @intCast(8 * i)));
result[i * 2 + 0] = hex_charset[byte >> 4];
result[i * 2 + 1] = hex_charset[byte & 15];
}
return result;
return std.fmt.hex(x);
}
/// A pair of target query and fully resolved target.