15 #include "llvm/ADT/ArrayRef.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/StringRef.h"
18 #include "llvm/ADT/StringSet.h"
19 #include "llvm/ADT/StringSwitch.h"
20 #include "llvm/Support/Program.h"
21 #include "llvm/Support/raw_ostream.h"
23 using namespace clang::driver;
24 using llvm::raw_ostream;
25 using llvm::StringRef;
29 const char *Executable,
const ArgStringList &Arguments)
30 : Source(Source), Creator(Creator), Executable(Executable),
31 Arguments(Arguments), ResponseFile(nullptr) {}
33 static int skipArgs(
const char *Flag,
bool HaveCrashVFS) {
36 bool Res = llvm::StringSwitch<bool>(Flag)
37 .Cases(
"-I",
"-MF",
"-MT",
"-MQ",
true)
38 .Cases(
"-o",
"-coverage-file",
"-dependency-file",
true)
39 .Cases(
"-fdebug-compilation-dir",
"-idirafter",
true)
40 .Cases(
"-include",
"-include-pch",
"-internal-isystem",
true)
41 .Cases(
"-internal-externc-isystem",
"-iprefix",
"-iwithprefix",
true)
42 .Cases(
"-iwithprefixbefore",
"-isystem",
"-iquote",
true)
43 .Cases(
"-resource-dir",
"-serialize-diagnostic-file",
true)
44 .Cases(
"-dwarf-debug-flags",
"-ivfsoverlay",
true)
46 .Case(
"-isysroot", !HaveCrashVFS)
56 Res = llvm::StringSwitch<bool>(Flag)
57 .Cases(
"-M",
"-MM",
"-MG",
"-MP",
"-MD",
true)
66 StringRef FlagRef(Flag);
67 if (FlagRef.startswith(
"-F") || FlagRef.startswith(
"-I") ||
68 FlagRef.startswith(
"-fmodules-cache-path="))
75 const bool Escape = std::strpbrk(Arg,
"\"\\$");
77 if (!Quote && !Escape) {
84 while (
const char c = *Arg++) {
85 if (c ==
'"' || c ==
'\\' || c ==
'$')
92 void Command::writeResponseFile(raw_ostream &OS)
const {
95 for (
const char *Arg : InputFileList) {
102 for (
const char *Arg : Arguments) {
105 for (; *Arg !=
'\0'; Arg++) {
106 if (*Arg ==
'\"' || *Arg ==
'\\') {
116 void Command::buildArgvForResponseFile(
122 Out.push_back(Executable);
123 Out.push_back(ResponseFileFlag.c_str());
127 llvm::StringSet<> Inputs;
128 for (
const char *InputName : InputFileList)
129 Inputs.insert(InputName);
130 Out.push_back(Executable);
133 bool FirstInput =
true;
134 for (
const char *Arg : Arguments) {
135 if (Inputs.count(Arg) == 0) {
137 }
else if (FirstInput) {
140 Out.push_back(ResponseFile);
153 if (ResponseFile !=
nullptr) {
154 buildArgvForResponseFile(ArgsRespFile);
158 StringRef MainFilename;
161 for (
size_t I = 0, E = Args.size(); I + 1 < E; ++I)
162 if (StringRef(Args[I]).equals(
"-main-file-name"))
163 MainFilename = Args[I + 1];
165 bool HaveCrashVFS = CrashInfo && !CrashInfo->
VFSPath.empty();
166 for (
size_t i = 0, e = Args.size(); i < e; ++i) {
167 const char *
const Arg = Args[i];
170 if (
int Skip =
skipArgs(Arg, HaveCrashVFS)) {
173 }
else if (llvm::sys::path::filename(Arg) == MainFilename &&
174 (i == 0 || StringRef(Args[i - 1]) !=
"-main-file-name")) {
177 StringRef ShortName = llvm::sys::path::filename(CrashInfo->
Filename);
178 printArg(OS, ShortName.str().c_str(), Quote);
187 if (CrashInfo && HaveCrashVFS) {
189 printArg(OS,
"-ivfsoverlay", Quote);
194 if (ResponseFile !=
nullptr) {
195 OS <<
"\n Arguments passed via response file:\n";
196 writeResponseFile(OS);
201 OS <<
" (end of response file)";
208 ResponseFile = FileName;
210 ResponseFileFlag += FileName;
214 bool *ExecutionFailed)
const {
217 if (ResponseFile ==
nullptr) {
218 Argv.push_back(Executable);
219 Argv.append(Arguments.begin(), Arguments.end());
220 Argv.push_back(
nullptr);
222 return llvm::sys::ExecuteAndWait(Executable, Argv.data(),
nullptr,
230 std::string RespContents;
231 llvm::raw_string_ostream SS(RespContents);
234 writeResponseFile(SS);
235 buildArgvForResponseFile(Argv);
236 Argv.push_back(
nullptr);
240 if (std::error_code EC = writeFileWithEncoding(
243 *ErrMsg = EC.message();
245 *ExecutionFailed =
true;
249 return llvm::sys::ExecuteAndWait(Executable, Argv.data(),
nullptr,
251 0, ErrMsg, ExecutionFailed);
255 const char *Executable_,
256 const ArgStringList &Arguments_,
257 std::unique_ptr<Command> Fallback_)
258 :
Command(Source_, Creator_, Executable_, Arguments_),
259 Fallback(std::move(Fallback_)) {}
265 Fallback->Print(OS, Terminator, Quote, CrashInfo);
272 return ExitCode != 0;
276 bool *ExecutionFailed)
const {
279 return PrimaryStatus;
285 *ExecutionFailed =
false;
288 D.
Diag(diag::warn_drv_invoking_fallback) << Fallback->getExecutable();
290 int SecondaryStatus = Fallback->Execute(Redirects, ErrMsg, ExecutionFailed);
291 return SecondaryStatus;
296 for (
const auto &Job : *
this)
297 Job.Print(OS, Terminator, Quote, CrashInfo);
Command(const Action &Source, const Tool &Creator, const char *Executable, const llvm::opt::ArgStringList &Arguments)
void setResponseFile(const char *FileName)
Set to pass arguments via a response file when launching the command.
int Execute(const StringRef **Redirects, std::string *ErrMsg, bool *ExecutionFailed) const override
DiagnosticBuilder Diag(unsigned DiagID) const
const Tool & getCreator() const
getCreator - Return the Tool which caused the creation of this job.
virtual void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote, CrashReportInfo *CrashInfo=nullptr) const
virtual int Execute(const StringRef **Redirects, std::string *ErrMsg, bool *ExecutionFailed) const
static int skipArgs(const char *Flag, bool HaveCrashVFS)
static bool ShouldFallback(int ExitCode)
void clear()
Clear the job list.
void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote, CrashReportInfo *CrashInfo=nullptr) const override
static void printArg(llvm::raw_ostream &OS, const char *Arg, bool Quote)
Print a command argument, and optionally quote it.
void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote, CrashReportInfo *CrashInfo=nullptr) const
FallbackCommand(const Action &Source_, const Tool &Creator_, const char *Executable_, const ArgStringList &Arguments_, std::unique_ptr< Command > Fallback_)