1 //===- Reproduce.cpp - Utilities for creating reproducers -----------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "lld/Common/Reproduce.h"
10 #include "llvm/Option/Arg.h"
11 #include "llvm/Support/Error.h"
12 #include "llvm/Support/FileSystem.h"
13 #include "llvm/Support/Path.h"
17 using namespace llvm::sys;
19 // Makes a given pathname an absolute path first, and then remove
20 // beginning /. For example, "../foo.o" is converted to "home/john/foo.o",
21 // assuming that the current directory is "/home/john/bar".
22 // Returned string is a forward slash separated path even on Windows to avoid
23 // a mess with backslash-as-escape and backslash-as-path-separator.
24 std::string lld::relativeToRoot(StringRef path) {
25 SmallString<128> abs = path;
26 if (fs::make_absolute(abs))
28 path::remove_dots(abs, /*remove_dot_dot=*/true);
30 // This is Windows specific. root_name() returns a drive letter
31 // (e.g. "c:") or a UNC name (//net). We want to keep it as part
34 StringRef root = path::root_name(abs);
35 if (root.endswith(":"))
36 res = root.drop_back();
37 else if (root.startswith("//"))
40 path::append(res, path::relative_path(abs));
41 return path::convert_to_slash(res);
44 // Quote a given string if it contains a space character.
45 std::string lld::quote(StringRef s) {
47 return ("\"" + s + "\"").str();
51 // Converts an Arg to a string representation suitable for a response file.
52 // To show an Arg in a diagnostic, use Arg::getAsString() instead.
53 std::string lld::toString(const opt::Arg &arg) {
54 std::string k = arg.getSpelling();
55 if (arg.getNumValues() == 0)
57 std::string v = quote(arg.getValue());
58 if (arg.getOption().getRenderStyle() == opt::Option::RenderJoinedStyle)