mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-21 16:54:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'ilmaria-master'

Browse Source 
closes #4608
This commit is contained in:
Andrew Kelley 2020-04-02 15:06:50 -04:00
commit 4aa797b6bb
No known key found for this signature in database
GPG Key ID: 7C5F548F728501A9
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
lib/std/os.zig
View File

@ -1208,12 +1208,15 @@ pub fn getenvZ(key: [*:0]const u8) ?[]const u8 {
/// Windows-only. Get an environment variable with a null-terminated, WTF-16 encoded name.
/// See also `getenv`.
/// This function first attempts a case-sensitive lookup. If no match is found, and `key`
/// is ASCII, then it attempts a second case-insensitive lookup.
pub fn getenvW(key: [*:0]const u16) ?[:0]const u16 {
if (builtin.os.tag != .windows) {
@compileError("std.os.getenvW is a Windows-only API");
}
const key_slice = mem.spanZ(key);
const ptr = windows.peb().ProcessParameters.Environment;
var ascii_match: ?[:0]const u16 = null;
var i: usize = 0;
while (ptr[i] != 0) {
const key_start = i;
@ -1229,9 +1232,20 @@ pub fn getenvW(key: [*:0]const u16) ?[:0]const u16 {
if (mem.eql(u16, key_slice, this_key)) return this_value;
ascii_check: {
if (ascii_match != null) break :ascii_check;
if (key_slice.len != this_key.len) break :ascii_check;
for (key_slice) |a_c, key_index| {
const a = math.cast(u8, a_c) catch break :ascii_check;
const b = math.cast(u8, this_key[key_index]) catch break :ascii_check;
if (std.ascii.toLower(a) != std.ascii.toLower(b)) break :ascii_check;
}
ascii_match = this_value;
}
i += 1; // skip over null byte
}
return null;
return ascii_match;
}
pub const GetCwdError = error{