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1 //===- Reproduce.cpp - Utilities for creating reproducers -----------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "lld/Common/Reproduce.h"
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10 #include "llvm/Option/Arg.h"
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11 #include "llvm/Support/Error.h"
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12 #include "llvm/Support/FileSystem.h"
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13 #include "llvm/Support/Path.h"
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14
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15 using namespace lld;
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16 using namespace llvm;
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17 using namespace llvm::sys;
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18
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19 // Makes a given pathname an absolute path first, and then remove
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20 // beginning /. For example, "../foo.o" is converted to "home/john/foo.o",
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21 // assuming that the current directory is "/home/john/bar".
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22 // Returned string is a forward slash separated path even on Windows to avoid
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23 // a mess with backslash-as-escape and backslash-as-path-separator.
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24 std::string lld::relativeToRoot(StringRef path) {
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25 SmallString<128> abs = path;
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26 if (fs::make_absolute(abs))
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27 return std::string(path);
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28 path::remove_dots(abs, /*remove_dot_dot=*/true);
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29
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30 // This is Windows specific. root_name() returns a drive letter
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31 // (e.g. "c:") or a UNC name (//net). We want to keep it as part
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32 // of the result.
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33 SmallString<128> res;
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34 StringRef root = path::root_name(abs);
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35 if (root.endswith(":"))
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36 res = root.drop_back();
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37 else if (root.startswith("//"))
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38 res = root.substr(2);
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39
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40 path::append(res, path::relative_path(abs));
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41 return path::convert_to_slash(res);
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42 }
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43
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44 // Quote a given string if it contains a space character.
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45 std::string lld::quote(StringRef s) {
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46 if (s.contains(' '))
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47 return ("\"" + s + "\"").str();
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48 return std::string(s);
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49 }
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50
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51 // Converts an Arg to a string representation suitable for a response file.
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52 // To show an Arg in a diagnostic, use Arg::getAsString() instead.
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53 std::string lld::toString(const opt::Arg &arg) {
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54 std::string k = std::string(arg.getSpelling());
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55 if (arg.getNumValues() == 0)
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56 return k;
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221
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57 std::string v;
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58 for (size_t i = 0; i < arg.getNumValues(); ++i) {
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59 if (i > 0)
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60 v.push_back(' ');
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61 v += quote(arg.getValue(i));
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62 }
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150
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63 if (arg.getOption().getRenderStyle() == opt::Option::RenderJoinedStyle)
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64 return k + v;
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65 return k + " " + v;
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66 }
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