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1 //===- Reproducer.cpp -----------------------------------------------------===//
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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 "Reproducer.h"
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10 #include "llvm/Support/Path.h"
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11
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12 using namespace llvm;
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13 using namespace llvm::dsymutil;
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14
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15 static std::string createReproducerDir(std::error_code &EC) {
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16 SmallString<128> Root;
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17 if (const char *Path = getenv("DSYMUTIL_REPRODUCER_PATH")) {
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18 Root.assign(Path);
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19 EC = sys::fs::create_directory(Root);
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20 } else {
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21 EC = sys::fs::createUniqueDirectory("dsymutil", Root);
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22 }
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23 return EC ? "" : std::string(Root);
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24 }
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25
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26 Reproducer::Reproducer() : VFS(vfs::getRealFileSystem()) {}
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27 Reproducer::~Reproducer() = default;
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28
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29 ReproducerGenerate::ReproducerGenerate(std::error_code &EC)
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30 : Root(createReproducerDir(EC)), FC() {
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31 if (!Root.empty())
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32 FC = std::make_shared<FileCollector>(Root, Root);
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33 VFS = FileCollector::createCollectorVFS(vfs::getRealFileSystem(), FC);
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34 }
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35
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36 ReproducerGenerate::~ReproducerGenerate() {
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37 if (!FC)
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38 return;
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39 FC->copyFiles(false);
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40 SmallString<128> Mapping(Root);
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41 sys::path::append(Mapping, "mapping.yaml");
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42 FC->writeMapping(Mapping.str());
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43 outs() << "reproducer written to " << Root << '\n';
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44 }
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45
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46 ReproducerUse::~ReproducerUse() = default;
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47
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48 ReproducerUse::ReproducerUse(StringRef Root, std::error_code &EC) {
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49 SmallString<128> Mapping(Root);
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50 sys::path::append(Mapping, "mapping.yaml");
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51 ErrorOr<std::unique_ptr<MemoryBuffer>> Buffer =
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52 vfs::getRealFileSystem()->getBufferForFile(Mapping.str());
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53
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54 if (!Buffer) {
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55 EC = Buffer.getError();
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56 return;
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57 }
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58
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59 VFS = llvm::vfs::getVFSFromYAML(std::move(Buffer.get()), nullptr, Mapping);
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60 }
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61
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62 llvm::Expected<std::unique_ptr<Reproducer>>
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63 Reproducer::createReproducer(ReproducerMode Mode, StringRef Root) {
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64 switch (Mode) {
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65 case ReproducerMode::Generate: {
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66 std::error_code EC;
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67 std::unique_ptr<Reproducer> Repro =
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68 std::make_unique<ReproducerGenerate>(EC);
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69 if (EC)
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70 return errorCodeToError(EC);
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71 return std::move(Repro);
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72 }
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73 case ReproducerMode::Use: {
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74 std::error_code EC;
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75 std::unique_ptr<Reproducer> Repro =
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76 std::make_unique<ReproducerUse>(Root, EC);
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77 if (EC)
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78 return errorCodeToError(EC);
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79 return std::move(Repro);
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80 }
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81 case ReproducerMode::Off:
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82 return std::make_unique<Reproducer>();
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83 }
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84 llvm_unreachable("All cases handled above.");
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85 }
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