| 1 | //===- Reproduce.cpp - Utilities for creating reproducers -----------------===// |
|---|---|
| 2 | // |
| 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 |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 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" |
| 14 | |
| 15 | using namespace lld; |
| 16 | using namespace llvm; |
| 17 | using namespace llvm::sys; |
| 18 | |
| 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(path&: abs)) |
| 27 | return std::string(path); |
| 28 | path::remove_dots(path&: abs, /*remove_dot_dot=*/true); |
| 29 | |
| 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 |
| 32 | // of the result. |
| 33 | SmallString<128> res; |
| 34 | StringRef root = path::root_name(path: abs); |
| 35 | if (root.ends_with(Suffix: ":")) |
| 36 | res = root.drop_back(); |
| 37 | else if (root.starts_with(Prefix: "//")) |
| 38 | res = root.substr(Start: 2); |
| 39 | |
| 40 | path::append(path&: res, a: path::relative_path(path: abs)); |
| 41 | return path::convert_to_slash(path: res); |
| 42 | } |
| 43 | |
| 44 | // Quote a given string if it contains a space character. |
| 45 | std::string lld::quote(StringRef s) { |
| 46 | if (s.contains(C: ' ')) |
| 47 | return ("\""+ s + "\"").str(); |
| 48 | return std::string(s); |
| 49 | } |
| 50 | |
| 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 = std::string(arg.getSpelling()); |
| 55 | if (arg.getNumValues() == 0) |
| 56 | return k; |
| 57 | std::string v; |
| 58 | for (size_t i = 0; i < arg.getNumValues(); ++i) { |
| 59 | if (i > 0) |
| 60 | v.push_back(c: ' '); |
| 61 | v += quote(s: arg.getValue(N: i)); |
| 62 | } |
| 63 | if (arg.getOption().getRenderStyle() == opt::Option::RenderJoinedStyle) |
| 64 | return k + v; |
| 65 | return k + " "+ v; |
| 66 | } |
| 67 |