Zig 0.17.0-dev (Split by item)

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getPosix

This function is unavailable on WASI without libc due to the memory allocation requirement.

File

lib/std/process/Environ.zig:630

Code

pub fn getPosix(environ: Environ, key: []const u8) ?[:0]const u8 {
    if (mem.findScalar(u8, key, '=') != null) return null;
    for (environ.block.view().slice) |entry| {
        var entry_i: usize = 0;
        while (entry[entry_i] != 0) : (entry_i += 1) {
            if (entry_i == key.len) break;
            if (entry[entry_i] != key[entry_i]) break;
        }
        if ((entry_i != key.len) or (entry[entry_i] != '=')) continue;

        return mem.sliceTo(entry + entry_i + 1, 0);
    }
    return null;
}