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/IR/LLVMContext.h"
16 #include "llvm/IR/Module.h"
17 #include "llvm/Object/Archive.h"
18 #include "llvm/Object/ObjectFile.h"
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Support/FileSystem.h"
21 #include "llvm/Support/Format.h"
22 #include "llvm/Support/ManagedStatic.h"
23 #include "llvm/Support/MemoryBuffer.h"
24 #include "llvm/Support/PrettyStackTrace.h"
25 #include "llvm/Support/Signals.h"
26 #include "llvm/Support/ToolOutputFile.h"
27 #include "llvm/Support/raw_ostream.h"
32 #if !defined(_MSC_VER) && !defined(__MINGW32__)
40 // The name this program was invoked as.
41 static StringRef ToolName;
43 static const char *TemporaryOutput;
44 static int TmpArchiveFD = -1;
46 // fail - Show the error message and exit.
47 LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) {
48 outs() << ToolName << ": " << Error << ".\n";
49 if (TmpArchiveFD != -1)
52 sys::fs::remove(TemporaryOutput);
56 static void failIfError(error_code EC, Twine Context = "") {
60 std::string ContextStr = Context.str();
63 fail(Context + ": " + EC.message());
66 // llvm-ar/llvm-ranlib remaining positional arguments.
67 static cl::list<std::string>
68 RestOfArgs(cl::Positional, cl::OneOrMore,
69 cl::desc("[relpos] [count] <archive-file> [members]..."));
73 // MoreHelp - Provide additional help output explaining the operations and
74 // modifiers of llvm-ar. This object instructs the CommandLine library
75 // to print the text of the constructor when the --help option is given.
76 static cl::extrahelp MoreHelp(
78 " d[NsS] - delete file(s) from the archive\n"
79 " m[abiSs] - move file(s) in the archive\n"
80 " p[kN] - print file(s) found in the archive\n"
81 " q[ufsS] - quick append file(s) to the archive\n"
82 " r[abfiuRsS] - replace or insert file(s) into the archive\n"
83 " t - display contents of archive\n"
84 " x[No] - extract file(s) from the archive\n"
85 "\nMODIFIERS (operation specific):\n"
86 " [a] - put file(s) after [relpos]\n"
87 " [b] - put file(s) before [relpos] (same as [i])\n"
88 " [i] - put file(s) before [relpos] (same as [b])\n"
89 " [N] - use instance [count] of name\n"
90 " [o] - preserve original dates\n"
91 " [s] - create an archive index (cf. ranlib)\n"
92 " [S] - do not build a symbol table\n"
93 " [u] - update only files newer than archive contents\n"
94 "\nMODIFIERS (generic):\n"
95 " [c] - do not warn if the library had to be created\n"
96 " [v] - be verbose about actions taken\n"
99 // This enumeration delineates the kinds of operations on an archive
100 // that are permitted.
101 enum ArchiveOperation {
102 Print, ///< Print the contents of the archive
103 Delete, ///< Delete the specified members
104 Move, ///< Move members to end or as given by {a,b,i} modifiers
105 QuickAppend, ///< Quickly append to end of archive
106 ReplaceOrInsert, ///< Replace or Insert members
107 DisplayTable, ///< Display the table of contents
108 Extract, ///< Extract files back to file system
109 CreateSymTab ///< Create a symbol table in an existing archive
112 // Modifiers to follow operation to vary behavior
113 static bool AddAfter = false; ///< 'a' modifier
114 static bool AddBefore = false; ///< 'b' modifier
115 static bool Create = false; ///< 'c' modifier
116 static bool OriginalDates = false; ///< 'o' modifier
117 static bool OnlyUpdate = false; ///< 'u' modifier
118 static bool Verbose = false; ///< 'v' modifier
119 static bool Symtab = true; ///< 's' modifier
121 // Relative Positional Argument (for insert/move). This variable holds
122 // the name of the archive member to which the 'a', 'b' or 'i' modifier
123 // refers. Only one of 'a', 'b' or 'i' can be specified so we only need
125 static std::string RelPos;
127 // This variable holds the name of the archive file as given on the
129 static std::string ArchiveName;
131 // This variable holds the list of member files to proecess, as given
132 // on the command line.
133 static std::vector<std::string> Members;
135 // show_help - Show the error message, the help message and exit.
136 LLVM_ATTRIBUTE_NORETURN static void
137 show_help(const std::string &msg) {
138 errs() << ToolName << ": " << msg << "\n\n";
139 cl::PrintHelpMessage();
143 // getRelPos - Extract the member filename from the command line for
144 // the [relpos] argument associated with a, b, and i modifiers
145 static void getRelPos() {
146 if(RestOfArgs.size() == 0)
147 show_help("Expected [relpos] for a, b, or i modifier");
148 RelPos = RestOfArgs[0];
149 RestOfArgs.erase(RestOfArgs.begin());
152 static void getOptions() {
153 if(RestOfArgs.size() == 0)
154 show_help("Expected options");
155 Options = RestOfArgs[0];
156 RestOfArgs.erase(RestOfArgs.begin());
159 // getArchive - Get the archive file name from the command line
160 static void getArchive() {
161 if(RestOfArgs.size() == 0)
162 show_help("An archive name must be specified");
163 ArchiveName = RestOfArgs[0];
164 RestOfArgs.erase(RestOfArgs.begin());
167 // getMembers - Copy over remaining items in RestOfArgs to our Members vector
168 // This is just for clarity.
169 static void getMembers() {
170 if(RestOfArgs.size() > 0)
171 Members = std::vector<std::string>(RestOfArgs);
174 // parseCommandLine - Parse the command line options as presented and return the
175 // operation specified. Process all modifiers and check to make sure that
176 // constraints on modifier/operation pairs have not been violated.
177 static ArchiveOperation parseCommandLine() {
180 // Keep track of number of operations. We can only specify one
182 unsigned NumOperations = 0;
184 // Keep track of the number of positional modifiers (a,b,i). Only
185 // one can be specified.
186 unsigned NumPositional = 0;
188 // Keep track of which operation was requested
189 ArchiveOperation Operation;
191 bool MaybeJustCreateSymTab = false;
193 for(unsigned i=0; i<Options.size(); ++i) {
195 case 'd': ++NumOperations; Operation = Delete; break;
196 case 'm': ++NumOperations; Operation = Move ; break;
197 case 'p': ++NumOperations; Operation = Print; break;
198 case 'q': ++NumOperations; Operation = QuickAppend; break;
199 case 'r': ++NumOperations; Operation = ReplaceOrInsert; break;
200 case 't': ++NumOperations; Operation = DisplayTable; break;
201 case 'x': ++NumOperations; Operation = Extract; break;
202 case 'c': Create = true; break;
203 case 'l': /* accepted but unused */ break;
204 case 'o': OriginalDates = true; break;
207 MaybeJustCreateSymTab = true;
212 case 'u': OnlyUpdate = true; break;
213 case 'v': Verbose = true; break;
230 cl::PrintHelpMessage();
234 // At this point, the next thing on the command line must be
238 // Everything on the command line at this point is a member.
241 if (NumOperations == 0 && MaybeJustCreateSymTab) {
243 Operation = CreateSymTab;
244 if (!Members.empty())
245 show_help("The s operation takes only an archive as argument");
248 // Perform various checks on the operation/modifier specification
249 // to make sure we are dealing with a legal request.
250 if (NumOperations == 0)
251 show_help("You must specify at least one of the operations");
252 if (NumOperations > 1)
253 show_help("Only one operation may be specified");
254 if (NumPositional > 1)
255 show_help("You may only specify one of a, b, and i modifiers");
256 if (AddAfter || AddBefore) {
257 if (Operation != Move && Operation != ReplaceOrInsert)
258 show_help("The 'a', 'b' and 'i' modifiers can only be specified with "
259 "the 'm' or 'r' operations");
261 if (OriginalDates && Operation != Extract)
262 show_help("The 'o' modifier is only applicable to the 'x' operation");
263 if (OnlyUpdate && Operation != ReplaceOrInsert)
264 show_help("The 'u' modifier is only applicable to the 'r' operation");
266 // Return the parsed operation to the caller
270 // Implements the 'p' operation. This function traverses the archive
271 // looking for members that match the path list.
272 static void doPrint(StringRef Name, object::Archive::child_iterator I) {
274 outs() << "Printing " << Name << "\n";
276 StringRef Data = I->getBuffer();
277 outs().write(Data.data(), Data.size());
280 // putMode - utility function for printing out the file mode when the 't'
281 // operation is in verbose mode.
282 static void printMode(unsigned mode) {
297 // Implement the 't' operation. This function prints out just
298 // the file names of each of the members. However, if verbose mode is requested
299 // ('v' modifier) then the file type, permission mode, user, group, size, and
300 // modification time are also printed.
301 static void doDisplayTable(StringRef Name, object::Archive::child_iterator I) {
303 sys::fs::perms Mode = I->getAccessMode();
304 printMode((Mode >> 6) & 007);
305 printMode((Mode >> 3) & 007);
306 printMode(Mode & 007);
307 outs() << ' ' << I->getUID();
308 outs() << '/' << I->getGID();
309 outs() << ' ' << format("%6llu", I->getSize());
310 outs() << ' ' << I->getLastModified().str();
313 outs() << Name << "\n";
316 // Implement the 'x' operation. This function extracts files back to the file
318 static void doExtract(StringRef Name, object::Archive::child_iterator I) {
319 // Retain the original mode.
320 sys::fs::perms Mode = I->getAccessMode();
321 SmallString<128> Storage = Name;
325 sys::fs::openFileForWrite(Storage.c_str(), FD, sys::fs::F_Binary, Mode),
329 raw_fd_ostream file(FD, false);
331 // Get the data and its length
332 StringRef Data = I->getBuffer();
335 file.write(Data.data(), Data.size());
338 // If we're supposed to retain the original modification times, etc. do so
342 sys::fs::setLastModificationAndAccessTime(FD, I->getLastModified()));
345 fail("Could not close the file");
348 static bool shouldCreateArchive(ArchiveOperation Op) {
359 case ReplaceOrInsert:
363 llvm_unreachable("Missing entry in covered switch.");
366 static void performReadOperation(ArchiveOperation Operation,
367 object::Archive *OldArchive) {
368 for (object::Archive::child_iterator I = OldArchive->begin_children(),
369 E = OldArchive->end_children();
372 failIfError(I->getName(Name));
374 if (!Members.empty() &&
375 std::find(Members.begin(), Members.end(), Name) == Members.end())
380 llvm_unreachable("Not a read operation");
385 doDisplayTable(Name, I);
395 class NewArchiveIterator {
398 object::Archive::child_iterator OldI;
399 std::string NewFilename;
402 NewArchiveIterator(object::Archive::child_iterator I, StringRef Name);
403 NewArchiveIterator(std::string *I, StringRef Name);
404 NewArchiveIterator();
405 bool isNewMember() const;
406 object::Archive::child_iterator getOld() const;
407 const char *getNew() const;
408 StringRef getName() const;
412 NewArchiveIterator::NewArchiveIterator() {}
414 NewArchiveIterator::NewArchiveIterator(object::Archive::child_iterator I,
416 : IsNewMember(false), Name(Name), OldI(I) {}
418 NewArchiveIterator::NewArchiveIterator(std::string *NewFilename, StringRef Name)
419 : IsNewMember(true), Name(Name), NewFilename(*NewFilename) {}
421 StringRef NewArchiveIterator::getName() const { return Name; }
423 bool NewArchiveIterator::isNewMember() const { return IsNewMember; }
425 object::Archive::child_iterator NewArchiveIterator::getOld() const {
426 assert(!IsNewMember);
430 const char *NewArchiveIterator::getNew() const {
432 return NewFilename.c_str();
435 template <typename T>
436 void addMember(std::vector<NewArchiveIterator> &Members, T I, StringRef Name,
438 NewArchiveIterator NI(I, Name);
440 Members.push_back(NI);
450 HasName(StringRef Name) : Name(Name) {}
451 bool operator()(StringRef Path) { return Name == sys::path::filename(Path); }
464 computeInsertAction(ArchiveOperation Operation,
465 object::Archive::child_iterator I, StringRef Name,
466 std::vector<std::string>::iterator &Pos) {
467 if (Operation == QuickAppend || Members.empty())
468 return IA_AddOldMember;
470 std::vector<std::string>::iterator MI =
471 std::find_if(Members.begin(), Members.end(), HasName(Name));
473 if (MI == Members.end())
474 return IA_AddOldMember;
478 if (Operation == Delete)
481 if (Operation == Move)
482 return IA_MoveOldMember;
484 if (Operation == ReplaceOrInsert) {
485 StringRef PosName = sys::path::filename(RelPos);
488 return IA_AddNewMeber;
489 return IA_MoveNewMember;
492 // We could try to optimize this to a fstat, but it is not a common
494 sys::fs::file_status Status;
495 failIfError(sys::fs::status(*MI, Status));
496 if (Status.getLastModificationTime() < I->getLastModified()) {
498 return IA_AddOldMember;
499 return IA_MoveOldMember;
503 return IA_AddNewMeber;
504 return IA_MoveNewMember;
506 llvm_unreachable("No such operation");
509 // We have to walk this twice and computing it is not trivial, so creating an
510 // explicit std::vector is actually fairly efficient.
511 static std::vector<NewArchiveIterator>
512 computeNewArchiveMembers(ArchiveOperation Operation,
513 object::Archive *OldArchive) {
514 std::vector<NewArchiveIterator> Ret;
515 std::vector<NewArchiveIterator> Moved;
517 StringRef PosName = sys::path::filename(RelPos);
519 for (object::Archive::child_iterator I = OldArchive->begin_children(),
520 E = OldArchive->end_children();
522 int Pos = Ret.size();
524 failIfError(I->getName(Name));
525 if (Name == PosName) {
526 assert(AddAfter || AddBefore);
533 std::vector<std::string>::iterator MemberI = Members.end();
534 InsertAction Action = computeInsertAction(Operation, I, Name, MemberI);
536 case IA_AddOldMember:
537 addMember(Ret, I, Name);
540 addMember(Ret, &*MemberI, Name);
544 case IA_MoveOldMember:
545 addMember(Moved, I, Name);
547 case IA_MoveNewMember:
548 addMember(Moved, &*MemberI, Name);
551 if (MemberI != Members.end())
552 Members.erase(MemberI);
556 if (Operation == Delete)
559 if (!RelPos.empty() && InsertPos == -1)
560 fail("Insertion point not found");
563 InsertPos = Ret.size();
565 assert(unsigned(InsertPos) <= Ret.size());
566 Ret.insert(Ret.begin() + InsertPos, Moved.begin(), Moved.end());
568 Ret.insert(Ret.begin() + InsertPos, Members.size(), NewArchiveIterator());
570 for (std::vector<std::string>::iterator I = Members.begin(),
572 I != E; ++I, ++Pos) {
573 StringRef Name = sys::path::filename(*I);
574 addMember(Ret, &*I, Name, Pos);
580 template <typename T>
581 static void printWithSpacePadding(raw_ostream &OS, T Data, unsigned Size) {
582 uint64_t OldPos = OS.tell();
584 unsigned SizeSoFar = OS.tell() - OldPos;
585 assert(Size >= SizeSoFar && "Data doesn't fit in Size");
586 unsigned Remaining = Size - SizeSoFar;
587 for (unsigned I = 0; I < Remaining; ++I)
591 static void print32BE(raw_fd_ostream &Out, unsigned Val) {
592 for (int I = 3; I >= 0; --I) {
593 char V = (Val >> (8 * I)) & 0xff;
598 static void printRestOfMemberHeader(raw_fd_ostream &Out,
599 const sys::TimeValue &ModTime, unsigned UID,
600 unsigned GID, unsigned Perms,
602 printWithSpacePadding(Out, ModTime.toEpochTime(), 12);
603 printWithSpacePadding(Out, UID, 6);
604 printWithSpacePadding(Out, GID, 6);
605 printWithSpacePadding(Out, format("%o", Perms), 8);
606 printWithSpacePadding(Out, Size, 10);
610 static void printMemberHeader(raw_fd_ostream &Out, StringRef Name,
611 const sys::TimeValue &ModTime, unsigned UID,
612 unsigned GID, unsigned Perms, unsigned Size) {
613 printWithSpacePadding(Out, Twine(Name) + "/", 16);
614 printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
617 static void printMemberHeader(raw_fd_ostream &Out, unsigned NameOffset,
618 const sys::TimeValue &ModTime, unsigned UID,
619 unsigned GID, unsigned Perms, unsigned Size) {
621 printWithSpacePadding(Out, NameOffset, 15);
622 printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
625 static void writeStringTable(raw_fd_ostream &Out,
626 ArrayRef<NewArchiveIterator> Members,
627 std::vector<unsigned> &StringMapIndexes) {
628 unsigned StartOffset = 0;
629 for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
632 StringRef Name = I->getName();
633 if (Name.size() < 16)
635 if (StartOffset == 0) {
636 printWithSpacePadding(Out, "//", 58);
638 StartOffset = Out.tell();
640 StringMapIndexes.push_back(Out.tell() - StartOffset);
641 Out << Name << "/\n";
643 if (StartOffset == 0)
647 int Pos = Out.tell();
648 Out.seek(StartOffset - 12);
649 printWithSpacePadding(Out, Pos - StartOffset, 10);
653 static void writeSymbolTable(
654 raw_fd_ostream &Out, ArrayRef<NewArchiveIterator> Members,
655 std::vector<std::pair<unsigned, unsigned> > &MemberOffsetRefs) {
656 unsigned StartOffset = 0;
657 unsigned MemberNum = 0;
658 std::vector<StringRef> SymNames;
659 std::vector<object::ObjectFile *> DeleteIt;
660 for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
662 I != E; ++I, ++MemberNum) {
663 object::ObjectFile *Obj;
664 if (I->isNewMember()) {
665 const char *Filename = I->getNew();
666 Obj = object::ObjectFile::createObjectFile(Filename);
668 object::Archive::child_iterator OldMember = I->getOld();
669 OwningPtr<object::Binary> Binary;
670 error_code EC = OldMember->getAsBinary(Binary);
671 if (EC) { // FIXME: check only for "not an object file" errors.
674 Obj = dyn_cast<object::ObjectFile>(Binary.get());
681 DeleteIt.push_back(Obj);
683 printMemberHeader(Out, "", sys::TimeValue::now(), 0, 0, 0, 0);
684 StartOffset = Out.tell();
689 for (object::symbol_iterator I = Obj->begin_symbols(),
690 E = Obj->end_symbols();
691 I != E; I.increment(Err), failIfError(Err)) {
693 failIfError(I->getFlags(Symflags));
694 if (Symflags & object::SymbolRef::SF_FormatSpecific)
696 if (!(Symflags & object::SymbolRef::SF_Global))
698 if (Symflags & object::SymbolRef::SF_Undefined)
701 failIfError(I->getName(Name));
702 SymNames.push_back(Name);
703 MemberOffsetRefs.push_back(std::make_pair(Out.tell(), MemberNum));
707 for (std::vector<StringRef>::iterator I = SymNames.begin(),
714 for (std::vector<object::ObjectFile *>::iterator I = DeleteIt.begin(),
717 object::ObjectFile *O = *I;
721 if (StartOffset == 0)
727 unsigned Pos = Out.tell();
728 Out.seek(StartOffset - 12);
729 printWithSpacePadding(Out, Pos - StartOffset, 10);
730 Out.seek(StartOffset);
731 print32BE(Out, SymNames.size());
735 static void performWriteOperation(ArchiveOperation Operation,
736 object::Archive *OldArchive) {
737 SmallString<128> TmpArchive;
738 failIfError(sys::fs::createUniqueFile(ArchiveName + ".temp-archive-%%%%%%%.a",
739 TmpArchiveFD, TmpArchive));
741 TemporaryOutput = TmpArchive.c_str();
742 tool_output_file Output(TemporaryOutput, TmpArchiveFD);
743 raw_fd_ostream &Out = Output.os();
746 std::vector<NewArchiveIterator> NewMembers =
747 computeNewArchiveMembers(Operation, OldArchive);
749 std::vector<std::pair<unsigned, unsigned> > MemberOffsetRefs;
752 writeSymbolTable(Out, NewMembers, MemberOffsetRefs);
755 std::vector<unsigned> StringMapIndexes;
756 writeStringTable(Out, NewMembers, StringMapIndexes);
758 std::vector<std::pair<unsigned, unsigned> >::iterator MemberRefsI =
759 MemberOffsetRefs.begin();
761 unsigned MemberNum = 0;
762 unsigned LongNameMemberNum = 0;
763 for (std::vector<NewArchiveIterator>::iterator I = NewMembers.begin(),
764 E = NewMembers.end();
765 I != E; ++I, ++MemberNum) {
767 unsigned Pos = Out.tell();
768 while (MemberRefsI != MemberOffsetRefs.end() &&
769 MemberRefsI->second == MemberNum) {
770 Out.seek(MemberRefsI->first);
776 if (I->isNewMember()) {
777 const char *FileName = I->getNew();
780 failIfError(sys::fs::openFileForRead(FileName, FD), FileName);
782 sys::fs::file_status Status;
783 failIfError(sys::fs::status(FD, Status), FileName);
785 // Opening a directory doesn't make sense. Let it failed.
786 // Linux cannot open directories with open(2), although
787 // cygwin and *bsd can.
788 if (Status.type() == sys::fs::file_type::directory_file)
789 failIfError(error_code(errc::is_a_directory, posix_category()),
792 OwningPtr<MemoryBuffer> File;
793 failIfError(MemoryBuffer::getOpenFile(FD, FileName, File,
794 Status.getSize(), false),
797 StringRef Name = sys::path::filename(FileName);
798 if (Name.size() < 16)
799 printMemberHeader(Out, Name, Status.getLastModificationTime(),
800 Status.getUser(), Status.getGroup(),
801 Status.permissions(), Status.getSize());
803 printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
804 Status.getLastModificationTime(), Status.getUser(),
805 Status.getGroup(), Status.permissions(),
807 Out << File->getBuffer();
809 object::Archive::child_iterator OldMember = I->getOld();
810 StringRef Name = I->getName();
812 if (Name.size() < 16)
813 printMemberHeader(Out, Name, OldMember->getLastModified(),
814 OldMember->getUID(), OldMember->getGID(),
815 OldMember->getAccessMode(), OldMember->getSize());
817 printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
818 OldMember->getLastModified(), OldMember->getUID(),
819 OldMember->getGID(), OldMember->getAccessMode(),
820 OldMember->getSize());
821 Out << OldMember->getBuffer();
829 sys::fs::rename(TemporaryOutput, ArchiveName);
830 TemporaryOutput = NULL;
833 static void createSymbolTable(object::Archive *OldArchive) {
834 // When an archive is created or modified, if the s option is given, the
835 // resulting archive will have a current symbol table. If the S option
836 // is given, it will have no symbol table.
837 // In summary, we only need to update the symbol table if we have none.
838 // This is actually very common because of broken build systems that think
839 // they have to run ranlib.
840 if (OldArchive->hasSymbolTable())
843 performWriteOperation(CreateSymTab, OldArchive);
846 static void performOperation(ArchiveOperation Operation,
847 object::Archive *OldArchive) {
852 performReadOperation(Operation, OldArchive);
858 case ReplaceOrInsert:
859 performWriteOperation(Operation, OldArchive);
862 createSymbolTable(OldArchive);
865 llvm_unreachable("Unknown operation.");
868 static int ar_main(char **argv);
869 static int ranlib_main();
871 // main - main program for llvm-ar .. see comments in the code
872 int main(int argc, char **argv) {
874 // Print a stack trace if we signal out.
875 sys::PrintStackTraceOnErrorSignal();
876 PrettyStackTraceProgram X(argc, argv);
877 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
879 // Have the command line options parsed and handle things
880 // like --help and --version.
881 cl::ParseCommandLineOptions(argc, argv,
882 "LLVM Archiver (llvm-ar)\n\n"
883 " This program archives bitcode files into single libraries\n"
886 StringRef Stem = sys::path::stem(ToolName);
887 if (Stem.find("ar") != StringRef::npos)
888 return ar_main(argv);
889 if (Stem.find("ranlib") != StringRef::npos)
890 return ranlib_main();
891 fail("Not ranlib or ar!");
894 static int performOperation(ArchiveOperation Operation);
897 if (RestOfArgs.size() != 1)
898 fail(ToolName + "takes just one archive as argument");
899 ArchiveName = RestOfArgs[0];
900 return performOperation(CreateSymTab);
903 int ar_main(char **argv) {
904 // Do our own parsing of the command line because the CommandLine utility
905 // can't handle the grouped positional parameters without a dash.
906 ArchiveOperation Operation = parseCommandLine();
907 return performOperation(Operation);
910 static int performOperation(ArchiveOperation Operation) {
911 // Create or open the archive object.
912 OwningPtr<MemoryBuffer> Buf;
913 error_code EC = MemoryBuffer::getFile(ArchiveName, Buf, -1, false);
914 if (EC && EC != llvm::errc::no_such_file_or_directory) {
915 errs() << ToolName << ": error opening '" << ArchiveName
916 << "': " << EC.message() << "!\n";
921 object::Archive Archive(Buf.take(), EC);
924 errs() << ToolName << ": error loading '" << ArchiveName
925 << "': " << EC.message() << "!\n";
928 performOperation(Operation, &Archive);
932 assert(EC == llvm::errc::no_such_file_or_directory);
934 if (!shouldCreateArchive(Operation)) {
935 failIfError(EC, Twine("error loading '") + ArchiveName + "'");
938 // Produce a warning if we should and we're creating the archive
939 errs() << ToolName << ": creating " << ArchiveName << "\n";
943 performOperation(Operation, NULL);