1 //===-- llvm-ar.cpp - LLVM archive librarian utility ----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Builds up (relatively) standard unix archive files (.a) containing LLVM
11 // bitcode or other files.
13 //===----------------------------------------------------------------------===//
15 #include "llvm/ADT/StringSwitch.h"
16 #include "llvm/ADT/Triple.h"
17 #include "llvm/IR/LLVMContext.h"
18 #include "llvm/Object/Archive.h"
19 #include "llvm/Object/ArchiveWriter.h"
20 #include "llvm/Object/MachO.h"
21 #include "llvm/Object/ObjectFile.h"
22 #include "llvm/Support/Chrono.h"
23 #include "llvm/Support/CommandLine.h"
24 #include "llvm/Support/Errc.h"
25 #include "llvm/Support/FileSystem.h"
26 #include "llvm/Support/Format.h"
27 #include "llvm/Support/InitLLVM.h"
28 #include "llvm/Support/LineIterator.h"
29 #include "llvm/Support/MemoryBuffer.h"
30 #include "llvm/Support/Path.h"
31 #include "llvm/Support/Process.h"
32 #include "llvm/Support/StringSaver.h"
33 #include "llvm/Support/TargetSelect.h"
34 #include "llvm/Support/ToolOutputFile.h"
35 #include "llvm/Support/raw_ostream.h"
36 #include "llvm/ToolDrivers/llvm-dlltool/DlltoolDriver.h"
37 #include "llvm/ToolDrivers/llvm-lib/LibDriver.h"
39 #if !defined(_MSC_VER) && !defined(__MINGW32__)
47 // The name this program was invoked as.
48 static StringRef ToolName;
50 // The basename of this program.
51 static StringRef Stem;
53 const char RanlibHelp[] = R"(
54 OVERVIEW: LLVM Ranlib (llvm-ranlib)
56 This program generates an index to speed access to archives
58 USAGE: llvm-ranlib <archive-file>
61 -help - Display available options
62 -version - Display the version of this program
65 const char ArHelp[] = R"(
66 OVERVIEW: LLVM Archiver
68 USAGE: llvm-ar [options] [-]<operation>[modifiers] [relpos] <archive> [files]
69 llvm-ar -M [<mri-script]
72 --format - Archive format to create
77 --plugin=<string> - Ignored for compatibility
78 --help - Display available options
79 --version - Display the version of this program
82 d - delete [files] from the archive
83 m - move [files] in the archive
84 p - print [files] found in the archive
85 q - quick append [files] to the archive
86 r - replace or insert [files] into the archive
88 t - display contents of archive
89 x - extract [files] from the archive
92 [a] - put [files] after [relpos]
93 [b] - put [files] before [relpos] (same as [i])
94 [c] - do not warn if archive had to be created
95 [D] - use zero for timestamps and uids/gids (default)
96 [i] - put [files] before [relpos] (same as [b])
97 [l] - ignored for compatibility
98 [o] - preserve original dates
99 [s] - create an archive index (cf. ranlib)
100 [S] - do not build a symbol table
101 [T] - create a thin archive
102 [u] - update only [files] newer than archive contents
103 [U] - use actual timestamps and uids/gids
104 [v] - be verbose about actions taken
107 void printHelpMessage() {
108 if (Stem.contains_lower("ranlib"))
109 outs() << RanlibHelp;
110 else if (Stem.contains_lower("ar"))
114 // Show the error message and exit.
115 LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) {
116 errs() << ToolName << ": " << Error << ".\n";
121 static void failIfError(std::error_code EC, Twine Context = "") {
125 std::string ContextStr = Context.str();
126 if (ContextStr == "")
128 fail(Context + ": " + EC.message());
131 static void failIfError(Error E, Twine Context = "") {
135 handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EIB) {
136 std::string ContextStr = Context.str();
137 if (ContextStr == "")
139 fail(Context + ": " + EIB.message());
143 static SmallVector<const char *, 256> PositionalArgs;
148 enum Format { Default, GNU, BSD, DARWIN, Unknown };
151 static Format FormatType = Default;
153 static std::string Options;
155 // This enumeration delineates the kinds of operations on an archive
156 // that are permitted.
157 enum ArchiveOperation {
158 Print, ///< Print the contents of the archive
159 Delete, ///< Delete the specified members
160 Move, ///< Move members to end or as given by {a,b,i} modifiers
161 QuickAppend, ///< Quickly append to end of archive
162 ReplaceOrInsert, ///< Replace or Insert members
163 DisplayTable, ///< Display the table of contents
164 Extract, ///< Extract files back to file system
165 CreateSymTab ///< Create a symbol table in an existing archive
168 // Modifiers to follow operation to vary behavior
169 static bool AddAfter = false; ///< 'a' modifier
170 static bool AddBefore = false; ///< 'b' modifier
171 static bool Create = false; ///< 'c' modifier
172 static bool OriginalDates = false; ///< 'o' modifier
173 static bool OnlyUpdate = false; ///< 'u' modifier
174 static bool Verbose = false; ///< 'v' modifier
175 static bool Symtab = true; ///< 's' modifier
176 static bool Deterministic = true; ///< 'D' and 'U' modifiers
177 static bool Thin = false; ///< 'T' modifier
179 // Relative Positional Argument (for insert/move). This variable holds
180 // the name of the archive member to which the 'a', 'b' or 'i' modifier
181 // refers. Only one of 'a', 'b' or 'i' can be specified so we only need
183 static std::string RelPos;
185 // This variable holds the name of the archive file as given on the
187 static std::string ArchiveName;
189 // This variable holds the list of member files to proecess, as given
190 // on the command line.
191 static std::vector<StringRef> Members;
193 // Extract the member filename from the command line for the [relpos] argument
194 // associated with a, b, and i modifiers
195 static void getRelPos() {
196 if (PositionalArgs.size() == 0)
197 fail("Expected [relpos] for a, b, or i modifier");
198 RelPos = PositionalArgs[0];
199 PositionalArgs.erase(PositionalArgs.begin());
202 // Get the archive file name from the command line
203 static void getArchive() {
204 if (PositionalArgs.size() == 0)
205 fail("An archive name must be specified");
206 ArchiveName = PositionalArgs[0];
207 PositionalArgs.erase(PositionalArgs.begin());
210 // Copy over remaining items in PositionalArgs to our Members vector
211 static void getMembers() {
212 for (auto &Arg : PositionalArgs)
213 Members.push_back(Arg);
216 static void runMRIScript();
218 // Parse the command line options as presented and return the operation
219 // specified. Process all modifiers and check to make sure that constraints on
220 // modifier/operation pairs have not been violated.
221 static ArchiveOperation parseCommandLine() {
223 if (!PositionalArgs.empty() || !Options.empty())
224 fail("Cannot mix -M and other options");
228 // Keep track of number of operations. We can only specify one
230 unsigned NumOperations = 0;
232 // Keep track of the number of positional modifiers (a,b,i). Only
233 // one can be specified.
234 unsigned NumPositional = 0;
236 // Keep track of which operation was requested
237 ArchiveOperation Operation;
239 bool MaybeJustCreateSymTab = false;
241 for(unsigned i=0; i<Options.size(); ++i) {
243 case 'd': ++NumOperations; Operation = Delete; break;
244 case 'm': ++NumOperations; Operation = Move ; break;
245 case 'p': ++NumOperations; Operation = Print; break;
246 case 'q': ++NumOperations; Operation = QuickAppend; break;
247 case 'r': ++NumOperations; Operation = ReplaceOrInsert; break;
248 case 't': ++NumOperations; Operation = DisplayTable; break;
249 case 'x': ++NumOperations; Operation = Extract; break;
250 case 'c': Create = true; break;
251 case 'l': /* accepted but unused */ break;
252 case 'o': OriginalDates = true; break;
255 MaybeJustCreateSymTab = true;
260 case 'u': OnlyUpdate = true; break;
261 case 'v': Verbose = true; break;
278 Deterministic = true;
281 Deterministic = false;
287 fail(std::string("unknown option ") + Options[i]);
291 // At this point, the next thing on the command line must be
295 // Everything on the command line at this point is a member.
298 if (NumOperations == 0 && MaybeJustCreateSymTab) {
300 Operation = CreateSymTab;
301 if (!Members.empty())
302 fail("The s operation takes only an archive as argument");
305 // Perform various checks on the operation/modifier specification
306 // to make sure we are dealing with a legal request.
307 if (NumOperations == 0)
308 fail("You must specify at least one of the operations");
309 if (NumOperations > 1)
310 fail("Only one operation may be specified");
311 if (NumPositional > 1)
312 fail("You may only specify one of a, b, and i modifiers");
313 if (AddAfter || AddBefore) {
314 if (Operation != Move && Operation != ReplaceOrInsert)
315 fail("The 'a', 'b' and 'i' modifiers can only be specified with "
316 "the 'm' or 'r' operations");
318 if (OriginalDates && Operation != Extract)
319 fail("The 'o' modifier is only applicable to the 'x' operation");
320 if (OnlyUpdate && Operation != ReplaceOrInsert)
321 fail("The 'u' modifier is only applicable to the 'r' operation");
323 // Return the parsed operation to the caller
327 // Implements the 'p' operation. This function traverses the archive
328 // looking for members that match the path list.
329 static void doPrint(StringRef Name, const object::Archive::Child &C) {
331 outs() << "Printing " << Name << "\n";
333 Expected<StringRef> DataOrErr = C.getBuffer();
334 failIfError(DataOrErr.takeError());
335 StringRef Data = *DataOrErr;
336 outs().write(Data.data(), Data.size());
339 // Utility function for printing out the file mode when the 't' operation is in
341 static void printMode(unsigned mode) {
342 outs() << ((mode & 004) ? "r" : "-");
343 outs() << ((mode & 002) ? "w" : "-");
344 outs() << ((mode & 001) ? "x" : "-");
347 // Implement the 't' operation. This function prints out just
348 // the file names of each of the members. However, if verbose mode is requested
349 // ('v' modifier) then the file type, permission mode, user, group, size, and
350 // modification time are also printed.
351 static void doDisplayTable(StringRef Name, const object::Archive::Child &C) {
353 Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
354 failIfError(ModeOrErr.takeError());
355 sys::fs::perms Mode = ModeOrErr.get();
356 printMode((Mode >> 6) & 007);
357 printMode((Mode >> 3) & 007);
358 printMode(Mode & 007);
359 Expected<unsigned> UIDOrErr = C.getUID();
360 failIfError(UIDOrErr.takeError());
361 outs() << ' ' << UIDOrErr.get();
362 Expected<unsigned> GIDOrErr = C.getGID();
363 failIfError(GIDOrErr.takeError());
364 outs() << '/' << GIDOrErr.get();
365 Expected<uint64_t> Size = C.getSize();
366 failIfError(Size.takeError());
367 outs() << ' ' << format("%6llu", Size.get());
368 auto ModTimeOrErr = C.getLastModified();
369 failIfError(ModTimeOrErr.takeError());
370 outs() << ' ' << ModTimeOrErr.get();
374 if (C.getParent()->isThin()) {
375 outs() << sys::path::parent_path(ArchiveName);
378 outs() << Name << "\n";
381 // Implement the 'x' operation. This function extracts files back to the file
383 static void doExtract(StringRef Name, const object::Archive::Child &C) {
384 // Retain the original mode.
385 Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
386 failIfError(ModeOrErr.takeError());
387 sys::fs::perms Mode = ModeOrErr.get();
390 failIfError(sys::fs::openFileForWrite(sys::path::filename(Name), FD,
391 sys::fs::CD_CreateAlways,
392 sys::fs::F_None, Mode),
396 raw_fd_ostream file(FD, false);
398 // Get the data and its length
399 Expected<StringRef> BufOrErr = C.getBuffer();
400 failIfError(BufOrErr.takeError());
401 StringRef Data = BufOrErr.get();
404 file.write(Data.data(), Data.size());
407 // If we're supposed to retain the original modification times, etc. do so
410 auto ModTimeOrErr = C.getLastModified();
411 failIfError(ModTimeOrErr.takeError());
413 sys::fs::setLastModificationAndAccessTime(FD, ModTimeOrErr.get()));
417 fail("Could not close the file");
420 static bool shouldCreateArchive(ArchiveOperation Op) {
431 case ReplaceOrInsert:
435 llvm_unreachable("Missing entry in covered switch.");
438 static void performReadOperation(ArchiveOperation Operation,
439 object::Archive *OldArchive) {
440 if (Operation == Extract && OldArchive->isThin())
441 fail("extracting from a thin archive is not supported");
443 bool Filter = !Members.empty();
445 Error Err = Error::success();
446 for (auto &C : OldArchive->children(Err)) {
447 Expected<StringRef> NameOrErr = C.getName();
448 failIfError(NameOrErr.takeError());
449 StringRef Name = NameOrErr.get();
452 auto I = find(Members, Name);
453 if (I == Members.end())
460 llvm_unreachable("Not a read operation");
465 doDisplayTable(Name, C);
472 failIfError(std::move(Err));
477 for (StringRef Name : Members)
478 errs() << Name << " was not found\n";
482 static void addMember(std::vector<NewArchiveMember> &Members,
483 StringRef FileName, int Pos = -1) {
484 Expected<NewArchiveMember> NMOrErr =
485 NewArchiveMember::getFile(FileName, Deterministic);
486 failIfError(NMOrErr.takeError(), FileName);
488 // Use the basename of the object path for the member name.
489 NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName);
492 Members.push_back(std::move(*NMOrErr));
494 Members[Pos] = std::move(*NMOrErr);
497 static void addMember(std::vector<NewArchiveMember> &Members,
498 const object::Archive::Child &M, int Pos = -1) {
499 if (Thin && !M.getParent()->isThin())
500 fail("Cannot convert a regular archive to a thin one");
501 Expected<NewArchiveMember> NMOrErr =
502 NewArchiveMember::getOldMember(M, Deterministic);
503 failIfError(NMOrErr.takeError());
505 Members.push_back(std::move(*NMOrErr));
507 Members[Pos] = std::move(*NMOrErr);
518 static InsertAction computeInsertAction(ArchiveOperation Operation,
519 const object::Archive::Child &Member,
521 std::vector<StringRef>::iterator &Pos) {
522 if (Operation == QuickAppend || Members.empty())
523 return IA_AddOldMember;
525 auto MI = find_if(Members, [Name](StringRef Path) {
526 return Name == sys::path::filename(Path);
529 if (MI == Members.end())
530 return IA_AddOldMember;
534 if (Operation == Delete)
537 if (Operation == Move)
538 return IA_MoveOldMember;
540 if (Operation == ReplaceOrInsert) {
541 StringRef PosName = sys::path::filename(RelPos);
544 return IA_AddNewMember;
545 return IA_MoveNewMember;
548 // We could try to optimize this to a fstat, but it is not a common
550 sys::fs::file_status Status;
551 failIfError(sys::fs::status(*MI, Status), *MI);
552 auto ModTimeOrErr = Member.getLastModified();
553 failIfError(ModTimeOrErr.takeError());
554 if (Status.getLastModificationTime() < ModTimeOrErr.get()) {
556 return IA_AddOldMember;
557 return IA_MoveOldMember;
561 return IA_AddNewMember;
562 return IA_MoveNewMember;
564 llvm_unreachable("No such operation");
567 // We have to walk this twice and computing it is not trivial, so creating an
568 // explicit std::vector is actually fairly efficient.
569 static std::vector<NewArchiveMember>
570 computeNewArchiveMembers(ArchiveOperation Operation,
571 object::Archive *OldArchive) {
572 std::vector<NewArchiveMember> Ret;
573 std::vector<NewArchiveMember> Moved;
575 StringRef PosName = sys::path::filename(RelPos);
577 Error Err = Error::success();
578 for (auto &Child : OldArchive->children(Err)) {
579 int Pos = Ret.size();
580 Expected<StringRef> NameOrErr = Child.getName();
581 failIfError(NameOrErr.takeError());
582 StringRef Name = NameOrErr.get();
583 if (Name == PosName) {
584 assert(AddAfter || AddBefore);
591 std::vector<StringRef>::iterator MemberI = Members.end();
592 InsertAction Action =
593 computeInsertAction(Operation, Child, Name, MemberI);
595 case IA_AddOldMember:
596 addMember(Ret, Child);
598 case IA_AddNewMember:
599 addMember(Ret, *MemberI);
603 case IA_MoveOldMember:
604 addMember(Moved, Child);
606 case IA_MoveNewMember:
607 addMember(Moved, *MemberI);
610 if (MemberI != Members.end())
611 Members.erase(MemberI);
613 failIfError(std::move(Err));
616 if (Operation == Delete)
619 if (!RelPos.empty() && InsertPos == -1)
620 fail("Insertion point not found");
623 InsertPos = Ret.size();
625 assert(unsigned(InsertPos) <= Ret.size());
627 for (auto &M : Moved) {
628 Ret.insert(Ret.begin() + Pos, std::move(M));
632 for (unsigned I = 0; I != Members.size(); ++I)
633 Ret.insert(Ret.begin() + InsertPos, NewArchiveMember());
635 for (auto &Member : Members) {
636 addMember(Ret, Member, Pos);
643 static object::Archive::Kind getDefaultForHost() {
644 return Triple(sys::getProcessTriple()).isOSDarwin()
645 ? object::Archive::K_DARWIN
646 : object::Archive::K_GNU;
649 static object::Archive::Kind getKindFromMember(const NewArchiveMember &Member) {
650 Expected<std::unique_ptr<object::ObjectFile>> OptionalObject =
651 object::ObjectFile::createObjectFile(Member.Buf->getMemBufferRef());
654 return isa<object::MachOObjectFile>(**OptionalObject)
655 ? object::Archive::K_DARWIN
656 : object::Archive::K_GNU;
658 // squelch the error in case we had a non-object file
659 consumeError(OptionalObject.takeError());
660 return getDefaultForHost();
664 performWriteOperation(ArchiveOperation Operation,
665 object::Archive *OldArchive,
666 std::unique_ptr<MemoryBuffer> OldArchiveBuf,
667 std::vector<NewArchiveMember> *NewMembersP) {
668 std::vector<NewArchiveMember> NewMembers;
670 NewMembers = computeNewArchiveMembers(Operation, OldArchive);
672 object::Archive::Kind Kind;
673 switch (FormatType) {
676 Kind = object::Archive::K_GNU;
678 Kind = OldArchive->kind();
679 else if (NewMembersP)
680 Kind = NewMembersP->size() ? getKindFromMember(NewMembersP->front())
681 : getDefaultForHost();
683 Kind = NewMembers.size() ? getKindFromMember(NewMembers.front())
684 : getDefaultForHost();
687 Kind = object::Archive::K_GNU;
691 fail("Only the gnu format has a thin mode");
692 Kind = object::Archive::K_BSD;
696 fail("Only the gnu format has a thin mode");
697 Kind = object::Archive::K_DARWIN;
700 llvm_unreachable("");
704 writeArchive(ArchiveName, NewMembersP ? *NewMembersP : NewMembers, Symtab,
705 Kind, Deterministic, Thin, std::move(OldArchiveBuf));
706 failIfError(std::move(E), ArchiveName);
709 static void createSymbolTable(object::Archive *OldArchive) {
710 // When an archive is created or modified, if the s option is given, the
711 // resulting archive will have a current symbol table. If the S option
712 // is given, it will have no symbol table.
713 // In summary, we only need to update the symbol table if we have none.
714 // This is actually very common because of broken build systems that think
715 // they have to run ranlib.
716 if (OldArchive->hasSymbolTable())
719 performWriteOperation(CreateSymTab, OldArchive, nullptr, nullptr);
722 static void performOperation(ArchiveOperation Operation,
723 object::Archive *OldArchive,
724 std::unique_ptr<MemoryBuffer> OldArchiveBuf,
725 std::vector<NewArchiveMember> *NewMembers) {
730 performReadOperation(Operation, OldArchive);
736 case ReplaceOrInsert:
737 performWriteOperation(Operation, OldArchive, std::move(OldArchiveBuf),
741 createSymbolTable(OldArchive);
744 llvm_unreachable("Unknown operation.");
747 static int performOperation(ArchiveOperation Operation,
748 std::vector<NewArchiveMember> *NewMembers) {
749 // Create or open the archive object.
750 ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
751 MemoryBuffer::getFile(ArchiveName, -1, false);
752 std::error_code EC = Buf.getError();
753 if (EC && EC != errc::no_such_file_or_directory)
754 fail("error opening '" + ArchiveName + "': " + EC.message() + "!");
757 Error Err = Error::success();
758 object::Archive Archive(Buf.get()->getMemBufferRef(), Err);
759 EC = errorToErrorCode(std::move(Err));
761 "error loading '" + ArchiveName + "': " + EC.message() + "!");
762 performOperation(Operation, &Archive, std::move(Buf.get()), NewMembers);
766 assert(EC == errc::no_such_file_or_directory);
768 if (!shouldCreateArchive(Operation)) {
769 failIfError(EC, Twine("error loading '") + ArchiveName + "'");
772 // Produce a warning if we should and we're creating the archive
773 errs() << ToolName << ": creating " << ArchiveName << "\n";
777 performOperation(Operation, nullptr, nullptr, NewMembers);
781 static void runMRIScript() {
782 enum class MRICommand { AddLib, AddMod, Create, Delete, Save, End, Invalid };
784 ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN();
785 failIfError(Buf.getError());
786 const MemoryBuffer &Ref = *Buf.get();
788 std::vector<NewArchiveMember> NewMembers;
789 std::vector<std::unique_ptr<MemoryBuffer>> ArchiveBuffers;
790 std::vector<std::unique_ptr<object::Archive>> Archives;
792 for (line_iterator I(Ref, /*SkipBlanks*/ true, ';'), E; I != E; ++I) {
794 StringRef CommandStr, Rest;
795 std::tie(CommandStr, Rest) = Line.split(' ');
797 if (!Rest.empty() && Rest.front() == '"' && Rest.back() == '"')
798 Rest = Rest.drop_front().drop_back();
799 auto Command = StringSwitch<MRICommand>(CommandStr.lower())
800 .Case("addlib", MRICommand::AddLib)
801 .Case("addmod", MRICommand::AddMod)
802 .Case("create", MRICommand::Create)
803 .Case("delete", MRICommand::Delete)
804 .Case("save", MRICommand::Save)
805 .Case("end", MRICommand::End)
806 .Default(MRICommand::Invalid);
809 case MRICommand::AddLib: {
810 auto BufOrErr = MemoryBuffer::getFile(Rest, -1, false);
811 failIfError(BufOrErr.getError(), "Could not open library");
812 ArchiveBuffers.push_back(std::move(*BufOrErr));
814 object::Archive::create(ArchiveBuffers.back()->getMemBufferRef());
815 failIfError(errorToErrorCode(LibOrErr.takeError()),
816 "Could not parse library");
817 Archives.push_back(std::move(*LibOrErr));
818 object::Archive &Lib = *Archives.back();
820 Error Err = Error::success();
821 for (auto &Member : Lib.children(Err))
822 addMember(NewMembers, Member);
823 failIfError(std::move(Err));
827 case MRICommand::AddMod:
828 addMember(NewMembers, Rest);
830 case MRICommand::Create:
832 if (!ArchiveName.empty())
833 fail("Editing multiple archives not supported");
835 fail("File already saved");
838 case MRICommand::Delete: {
839 StringRef Name = sys::path::filename(Rest);
840 llvm::erase_if(NewMembers,
841 [=](NewArchiveMember &M) { return M.MemberName == Name; });
844 case MRICommand::Save:
847 case MRICommand::End:
849 case MRICommand::Invalid:
850 fail("Unknown command: " + CommandStr);
854 // Nothing to do if not saved.
856 performOperation(ReplaceOrInsert, &NewMembers);
860 static bool handleGenericOption(StringRef arg) {
861 if (arg == "-help" || arg == "--help") {
865 if (arg == "-version" || arg == "--version") {
866 cl::PrintVersionMessage();
872 static int ar_main(int argc, char **argv) {
873 SmallVector<const char *, 0> Argv(argv, argv + argc);
874 BumpPtrAllocator Alloc;
875 StringSaver Saver(Alloc);
876 cl::ExpandResponseFiles(Saver, cl::TokenizeGNUCommandLine, Argv);
877 for(size_t i = 1; i < Argv.size(); ++i) {
878 StringRef Arg = Argv[i];
880 auto MatchFlagWithArg = [&](const char *expected) {
881 size_t len = strlen(expected);
882 if (Arg == expected) {
883 if (++i >= Argv.size())
884 fail(std::string(expected) + " requires an argument");
888 if (Arg.startswith(expected) && Arg.size() > len &&
890 match = Arg.data() + len + 1;
895 if (handleGenericOption(Argv[i]))
898 for(; i < Argv.size(); ++i)
899 PositionalArgs.push_back(Argv[i]);
903 if (Arg.startswith("--"))
909 } else if (MatchFlagWithArg("format")) {
910 FormatType = StringSwitch<Format>(match)
911 .Case("default", Default)
913 .Case("darwin", DARWIN)
916 if (FormatType == Unknown)
917 fail(std::string("Invalid format ") + match);
918 } else if (MatchFlagWithArg("plugin")) {
921 Options += Argv[i] + 1;
923 } else if (Options.empty()) {
926 PositionalArgs.push_back(Argv[i]);
929 ArchiveOperation Operation = parseCommandLine();
930 return performOperation(Operation, nullptr);
933 static int ranlib_main(int argc, char **argv) {
934 bool ArchiveSpecified = false;
935 for(int i = 1; i < argc; ++i) {
936 if (handleGenericOption(argv[i])) {
939 if (ArchiveSpecified)
940 fail("Exactly one archive should be specified");
941 ArchiveSpecified = true;
942 ArchiveName = argv[i];
945 return performOperation(CreateSymTab, nullptr);
948 int main(int argc, char **argv) {
949 InitLLVM X(argc, argv);
952 llvm::InitializeAllTargetInfos();
953 llvm::InitializeAllTargetMCs();
954 llvm::InitializeAllAsmParsers();
956 Stem = sys::path::stem(ToolName);
957 if (Stem.contains_lower("dlltool"))
958 return dlltoolDriverMain(makeArrayRef(argv, argc));
960 if (Stem.contains_lower("ranlib"))
961 return ranlib_main(argc, argv);
963 if (Stem.contains_lower("lib"))
964 return libDriverMain(makeArrayRef(argv, argc));
966 if (Stem.contains_lower("ar"))
967 return ar_main(argc, argv);
968 fail("Not ranlib, ar, lib or dlltool!");