Source
pub fn allocPrintCmd2(
arena: Allocator,
opt_cwd: ?[]const u8,
opt_env: ?*const std.process.EnvMap,
argv: []const []const u8,
) Allocator.Error![]u8 {
var buf: std.ArrayListUnmanaged(u8) = .empty;
if (opt_cwd) |cwd| try buf.writer(arena).print("cd {s} && ", .{cwd});
if (opt_env) |env| {
const process_env_map = std.process.getEnvMap(arena) catch std.process.EnvMap.init(arena);
var it = env.iterator();
while (it.next()) |entry| {
const key = entry.key_ptr.*;
const value = entry.value_ptr.*;
if (process_env_map.get(key)) |process_value| {
if (std.mem.eql(u8, value, process_value)) continue;
}
try buf.writer(arena).print("{s}={s} ", .{ key, value });
}
}
for (argv) |arg| {
try buf.writer(arena).print("{s} ", .{arg});
}
return buf.toOwnedSlice(arena);
}