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llvm-mirror/tools/llvm-ar/llvm-ar.cpp
Zachary Turner 2f6a8ddfe8 [FileSystem] Split up the OpenFlags enumeration. 
This breaks the OpenFlags enumeration into two separate
enumerations: OpenFlags and CreationDisposition.  The first
controls the behavior of the API depending on whether or not
the target file already exists, and is not a flags-based
enum.  The second controls more flags-like values.

This yields a more easy to understand API, while also allowing
flags to be passed to the openForRead api, where most of the
values didn't make sense before.  This also makes the apis more
testable as it becomes easy to enumerate all the configurations
which make sense, so I've added many new tests to exercise all
the different values.

llvm-svn: 334221
2018-06-07 19:58:58 +00:00

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//===-- llvm-ar.cpp - LLVM archive librarian utility ----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Builds up (relatively) standard unix archive files (.a) containing LLVM
// bitcode or other files.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ArchiveWriter.h"
#include "llvm/Object/MachO.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Chrono.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ToolDrivers/llvm-dlltool/DlltoolDriver.h"
#include "llvm/ToolDrivers/llvm-lib/LibDriver.h"
#if !defined(_MSC_VER) && !defined(__MINGW32__)
#include <unistd.h>
#else
#include <io.h>
#endif
using namespace llvm;
// The name this program was invoked as.
static StringRef ToolName;
// The basename of this program.
static StringRef Stem;
const char RanlibHelp[] = R"(
OVERVIEW: LLVM Ranlib (llvm-ranlib)
This program generates an index to speed access to archives
USAGE: llvm-ranlib <archive-file>
OPTIONS:
-help - Display available options
-version - Display the version of this program
)";
const char ArHelp[] = R"(
OVERVIEW: LLVM Archiver (llvm-ar)
This program archives bitcode files into single libraries
USAGE: llvm-ar [options] [relpos] [count] <archive-file> [members]...
OPTIONS:
-M -
-format - Archive format to create
=default - default
=gnu - gnu
=darwin - darwin
=bsd - bsd
-plugin=<string> - plugin (ignored for compatibility
-help - Display available options
-version - Display the version of this program
OPERATIONS:
d[NsS] - delete file(s) from the archive
m[abiSs] - move file(s) in the archive
p[kN] - print file(s) found in the archive
q[ufsS] - quick append file(s) to the archive
r[abfiuRsS] - replace or insert file(s) into the archive
t - display contents of archive
x[No] - extract file(s) from the archive
MODIFIERS (operation specific):
[a] - put file(s) after [relpos]
[b] - put file(s) before [relpos] (same as [i])
[D] - use zero for timestamps and uids/gids (default)
[i] - put file(s) before [relpos] (same as [b])
[o] - preserve original dates
[s] - create an archive index (cf. ranlib)
[S] - do not build a symbol table
[T] - create a thin archive
[u] - update only files newer than archive contents
[U] - use actual timestamps and uids/gids
MODIFIERS (generic):
[c] - do not warn if the library had to be created
[v] - be verbose about actions taken
)";
void printHelpMessage() {
if (Stem.contains_lower("ranlib"))
outs() << RanlibHelp;
else if (Stem.contains_lower("ar"))
outs() << ArHelp;
}
// Show the error message and exit.
LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) {
errs() << ToolName << ": " << Error << ".\n";
printHelpMessage();
exit(1);
}
static void failIfError(std::error_code EC, Twine Context = "") {
if (!EC)
return;
std::string ContextStr = Context.str();
if (ContextStr == "")
fail(EC.message());
fail(Context + ": " + EC.message());
}
static void failIfError(Error E, Twine Context = "") {
if (!E)
return;
handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EIB) {
std::string ContextStr = Context.str();
if (ContextStr == "")
fail(EIB.message());
fail(Context + ": " + EIB.message());
});
}
static SmallVector<const char *, 256> PositionalArgs;
static bool MRI;
namespace {
enum Format { Default, GNU, BSD, DARWIN, Unknown };
}
static Format FormatType = Default;
static std::string Options;
// This enumeration delineates the kinds of operations on an archive
// that are permitted.
enum ArchiveOperation {
Print, ///< Print the contents of the archive
Delete, ///< Delete the specified members
Move, ///< Move members to end or as given by {a,b,i} modifiers
QuickAppend, ///< Quickly append to end of archive
ReplaceOrInsert, ///< Replace or Insert members
DisplayTable, ///< Display the table of contents
Extract, ///< Extract files back to file system
CreateSymTab ///< Create a symbol table in an existing archive
};
// Modifiers to follow operation to vary behavior
static bool AddAfter = false; ///< 'a' modifier
static bool AddBefore = false; ///< 'b' modifier
static bool Create = false; ///< 'c' modifier
static bool OriginalDates = false; ///< 'o' modifier
static bool OnlyUpdate = false; ///< 'u' modifier
static bool Verbose = false; ///< 'v' modifier
static bool Symtab = true; ///< 's' modifier
static bool Deterministic = true; ///< 'D' and 'U' modifiers
static bool Thin = false; ///< 'T' modifier
// Relative Positional Argument (for insert/move). This variable holds
// the name of the archive member to which the 'a', 'b' or 'i' modifier
// refers. Only one of 'a', 'b' or 'i' can be specified so we only need
// one variable.
static std::string RelPos;
// This variable holds the name of the archive file as given on the
// command line.
static std::string ArchiveName;
// This variable holds the list of member files to proecess, as given
// on the command line.
static std::vector<StringRef> Members;
// Extract the member filename from the command line for the [relpos] argument
// associated with a, b, and i modifiers
static void getRelPos() {
if (PositionalArgs.size() == 0)
fail("Expected [relpos] for a, b, or i modifier");
RelPos = PositionalArgs[0];
PositionalArgs.erase(PositionalArgs.begin());
}
// Get the archive file name from the command line
static void getArchive() {
if (PositionalArgs.size() == 0)
fail("An archive name must be specified");
ArchiveName = PositionalArgs[0];
PositionalArgs.erase(PositionalArgs.begin());
}
// Copy over remaining items in PositionalArgs to our Members vector
static void getMembers() {
for (auto &Arg : PositionalArgs)
Members.push_back(Arg);
}
static void runMRIScript();
// Parse the command line options as presented and return the operation
// specified. Process all modifiers and check to make sure that constraints on
// modifier/operation pairs have not been violated.
static ArchiveOperation parseCommandLine() {
if (MRI) {
if (!PositionalArgs.empty() || !Options.empty())
fail("Cannot mix -M and other options");
runMRIScript();
}
// Keep track of number of operations. We can only specify one
// per execution.
unsigned NumOperations = 0;
// Keep track of the number of positional modifiers (a,b,i). Only
// one can be specified.
unsigned NumPositional = 0;
// Keep track of which operation was requested
ArchiveOperation Operation;
bool MaybeJustCreateSymTab = false;
for(unsigned i=0; i<Options.size(); ++i) {
switch(Options[i]) {
case 'd': ++NumOperations; Operation = Delete; break;
case 'm': ++NumOperations; Operation = Move ; break;
case 'p': ++NumOperations; Operation = Print; break;
case 'q': ++NumOperations; Operation = QuickAppend; break;
case 'r': ++NumOperations; Operation = ReplaceOrInsert; break;
case 't': ++NumOperations; Operation = DisplayTable; break;
case 'x': ++NumOperations; Operation = Extract; break;
case 'c': Create = true; break;
case 'l': /* accepted but unused */ break;
case 'o': OriginalDates = true; break;
case 's':
Symtab = true;
MaybeJustCreateSymTab = true;
break;
case 'S':
Symtab = false;
break;
case 'u': OnlyUpdate = true; break;
case 'v': Verbose = true; break;
case 'a':
getRelPos();
AddAfter = true;
NumPositional++;
break;
case 'b':
getRelPos();
AddBefore = true;
NumPositional++;
break;
case 'i':
getRelPos();
AddBefore = true;
NumPositional++;
break;
case 'D':
Deterministic = true;
break;
case 'U':
Deterministic = false;
break;
case 'T':
Thin = true;
break;
default:
fail(std::string("unknown option ") + Options[i]);
}
}
// At this point, the next thing on the command line must be
// the archive name.
getArchive();
// Everything on the command line at this point is a member.
getMembers();
if (NumOperations == 0 && MaybeJustCreateSymTab) {
NumOperations = 1;
Operation = CreateSymTab;
if (!Members.empty())
fail("The s operation takes only an archive as argument");
}
// Perform various checks on the operation/modifier specification
// to make sure we are dealing with a legal request.
if (NumOperations == 0)
fail("You must specify at least one of the operations");
if (NumOperations > 1)
fail("Only one operation may be specified");
if (NumPositional > 1)
fail("You may only specify one of a, b, and i modifiers");
if (AddAfter || AddBefore) {
if (Operation != Move && Operation != ReplaceOrInsert)
fail("The 'a', 'b' and 'i' modifiers can only be specified with "
"the 'm' or 'r' operations");
}
if (OriginalDates && Operation != Extract)
fail("The 'o' modifier is only applicable to the 'x' operation");
if (OnlyUpdate && Operation != ReplaceOrInsert)
fail("The 'u' modifier is only applicable to the 'r' operation");
// Return the parsed operation to the caller
return Operation;
}
// Implements the 'p' operation. This function traverses the archive
// looking for members that match the path list.
static void doPrint(StringRef Name, const object::Archive::Child &C) {
if (Verbose)
outs() << "Printing " << Name << "\n";
Expected<StringRef> DataOrErr = C.getBuffer();
failIfError(DataOrErr.takeError());
StringRef Data = *DataOrErr;
outs().write(Data.data(), Data.size());
}
// Utility function for printing out the file mode when the 't' operation is in
// verbose mode.
static void printMode(unsigned mode) {
outs() << ((mode & 004) ? "r" : "-");
outs() << ((mode & 002) ? "w" : "-");
outs() << ((mode & 001) ? "x" : "-");
}
// Implement the 't' operation. This function prints out just
// the file names of each of the members. However, if verbose mode is requested
// ('v' modifier) then the file type, permission mode, user, group, size, and
// modification time are also printed.
static void doDisplayTable(StringRef Name, const object::Archive::Child &C) {
if (Verbose) {
Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
failIfError(ModeOrErr.takeError());
sys::fs::perms Mode = ModeOrErr.get();
printMode((Mode >> 6) & 007);
printMode((Mode >> 3) & 007);
printMode(Mode & 007);
Expected<unsigned> UIDOrErr = C.getUID();
failIfError(UIDOrErr.takeError());
outs() << ' ' << UIDOrErr.get();
Expected<unsigned> GIDOrErr = C.getGID();
failIfError(GIDOrErr.takeError());
outs() << '/' << GIDOrErr.get();
Expected<uint64_t> Size = C.getSize();
failIfError(Size.takeError());
outs() << ' ' << format("%6llu", Size.get());
auto ModTimeOrErr = C.getLastModified();
failIfError(ModTimeOrErr.takeError());
outs() << ' ' << ModTimeOrErr.get();
outs() << ' ';
}
if (C.getParent()->isThin()) {
outs() << sys::path::parent_path(ArchiveName);
outs() << '/';
}
outs() << Name << "\n";
}
// Implement the 'x' operation. This function extracts files back to the file
// system.
static void doExtract(StringRef Name, const object::Archive::Child &C) {
// Retain the original mode.
Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
failIfError(ModeOrErr.takeError());
sys::fs::perms Mode = ModeOrErr.get();
int FD;
failIfError(sys::fs::openFileForWrite(sys::path::filename(Name), FD,
sys::fs::CD_CreateAlways,
sys::fs::F_None, Mode),
Name);
{
raw_fd_ostream file(FD, false);
// Get the data and its length
Expected<StringRef> BufOrErr = C.getBuffer();
failIfError(BufOrErr.takeError());
StringRef Data = BufOrErr.get();
// Write the data.
file.write(Data.data(), Data.size());
}
// If we're supposed to retain the original modification times, etc. do so
// now.
if (OriginalDates) {
auto ModTimeOrErr = C.getLastModified();
failIfError(ModTimeOrErr.takeError());
failIfError(
sys::fs::setLastModificationAndAccessTime(FD, ModTimeOrErr.get()));
}
if (close(FD))
fail("Could not close the file");
}
static bool shouldCreateArchive(ArchiveOperation Op) {
switch (Op) {
case Print:
case Delete:
case Move:
case DisplayTable:
case Extract:
case CreateSymTab:
return false;
case QuickAppend:
case ReplaceOrInsert:
return true;
}
llvm_unreachable("Missing entry in covered switch.");
}
static void performReadOperation(ArchiveOperation Operation,
object::Archive *OldArchive) {
if (Operation == Extract && OldArchive->isThin())
fail("extracting from a thin archive is not supported");
bool Filter = !Members.empty();
{
Error Err = Error::success();
for (auto &C : OldArchive->children(Err)) {
Expected<StringRef> NameOrErr = C.getName();
failIfError(NameOrErr.takeError());
StringRef Name = NameOrErr.get();
if (Filter) {
auto I = find(Members, Name);
if (I == Members.end())
continue;
Members.erase(I);
}
switch (Operation) {
default:
llvm_unreachable("Not a read operation");
case Print:
doPrint(Name, C);
break;
case DisplayTable:
doDisplayTable(Name, C);
break;
case Extract:
doExtract(Name, C);
break;
}
}
failIfError(std::move(Err));
}
if (Members.empty())
return;
for (StringRef Name : Members)
errs() << Name << " was not found\n";
exit(1);
}
static void addMember(std::vector<NewArchiveMember> &Members,
StringRef FileName, int Pos = -1) {
Expected<NewArchiveMember> NMOrErr =
NewArchiveMember::getFile(FileName, Deterministic);
failIfError(NMOrErr.takeError(), FileName);
// Use the basename of the object path for the member name.
NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName);
if (Pos == -1)
Members.push_back(std::move(*NMOrErr));
else
Members[Pos] = std::move(*NMOrErr);
}
static void addMember(std::vector<NewArchiveMember> &Members,
const object::Archive::Child &M, int Pos = -1) {
if (Thin && !M.getParent()->isThin())
fail("Cannot convert a regular archive to a thin one");
Expected<NewArchiveMember> NMOrErr =
NewArchiveMember::getOldMember(M, Deterministic);
failIfError(NMOrErr.takeError());
if (Pos == -1)
Members.push_back(std::move(*NMOrErr));
else
Members[Pos] = std::move(*NMOrErr);
}
enum InsertAction {
IA_AddOldMember,
IA_AddNewMember,
IA_Delete,
IA_MoveOldMember,
IA_MoveNewMember
};
static InsertAction computeInsertAction(ArchiveOperation Operation,
const object::Archive::Child &Member,
StringRef Name,
std::vector<StringRef>::iterator &Pos) {
if (Operation == QuickAppend || Members.empty())
return IA_AddOldMember;
auto MI = find_if(Members, [Name](StringRef Path) {
return Name == sys::path::filename(Path);
});
if (MI == Members.end())
return IA_AddOldMember;
Pos = MI;
if (Operation == Delete)
return IA_Delete;
if (Operation == Move)
return IA_MoveOldMember;
if (Operation == ReplaceOrInsert) {
StringRef PosName = sys::path::filename(RelPos);
if (!OnlyUpdate) {
if (PosName.empty())
return IA_AddNewMember;
return IA_MoveNewMember;
}
// We could try to optimize this to a fstat, but it is not a common
// operation.
sys::fs::file_status Status;
failIfError(sys::fs::status(*MI, Status), *MI);
auto ModTimeOrErr = Member.getLastModified();
failIfError(ModTimeOrErr.takeError());
if (Status.getLastModificationTime() < ModTimeOrErr.get()) {
if (PosName.empty())
return IA_AddOldMember;
return IA_MoveOldMember;
}
if (PosName.empty())
return IA_AddNewMember;
return IA_MoveNewMember;
}
llvm_unreachable("No such operation");
}
// We have to walk this twice and computing it is not trivial, so creating an
// explicit std::vector is actually fairly efficient.
static std::vector<NewArchiveMember>
computeNewArchiveMembers(ArchiveOperation Operation,
object::Archive *OldArchive) {
std::vector<NewArchiveMember> Ret;
std::vector<NewArchiveMember> Moved;
int InsertPos = -1;
StringRef PosName = sys::path::filename(RelPos);
if (OldArchive) {
Error Err = Error::success();
for (auto &Child : OldArchive->children(Err)) {
int Pos = Ret.size();
Expected<StringRef> NameOrErr = Child.getName();
failIfError(NameOrErr.takeError());
StringRef Name = NameOrErr.get();
if (Name == PosName) {
assert(AddAfter || AddBefore);
if (AddBefore)
InsertPos = Pos;
else
InsertPos = Pos + 1;
}
std::vector<StringRef>::iterator MemberI = Members.end();
InsertAction Action =
computeInsertAction(Operation, Child, Name, MemberI);
switch (Action) {
case IA_AddOldMember:
addMember(Ret, Child);
break;
case IA_AddNewMember:
addMember(Ret, *MemberI);
break;
case IA_Delete:
break;
case IA_MoveOldMember:
addMember(Moved, Child);
break;
case IA_MoveNewMember:
addMember(Moved, *MemberI);
break;
}
if (MemberI != Members.end())
Members.erase(MemberI);
}
failIfError(std::move(Err));
}
if (Operation == Delete)
return Ret;
if (!RelPos.empty() && InsertPos == -1)
fail("Insertion point not found");
if (RelPos.empty())
InsertPos = Ret.size();
assert(unsigned(InsertPos) <= Ret.size());
int Pos = InsertPos;
for (auto &M : Moved) {
Ret.insert(Ret.begin() + Pos, std::move(M));
++Pos;
}
for (unsigned I = 0; I != Members.size(); ++I)
Ret.insert(Ret.begin() + InsertPos, NewArchiveMember());
Pos = InsertPos;
for (auto &Member : Members) {
addMember(Ret, Member, Pos);
++Pos;
}
return Ret;
}
static object::Archive::Kind getDefaultForHost() {
return Triple(sys::getProcessTriple()).isOSDarwin()
? object::Archive::K_DARWIN
: object::Archive::K_GNU;
}
static object::Archive::Kind getKindFromMember(const NewArchiveMember &Member) {
Expected<std::unique_ptr<object::ObjectFile>> OptionalObject =
object::ObjectFile::createObjectFile(Member.Buf->getMemBufferRef());
if (OptionalObject)
return isa<object::MachOObjectFile>(**OptionalObject)
? object::Archive::K_DARWIN
: object::Archive::K_GNU;
// squelch the error in case we had a non-object file
consumeError(OptionalObject.takeError());
return getDefaultForHost();
}
static void
performWriteOperation(ArchiveOperation Operation,
object::Archive *OldArchive,
std::unique_ptr<MemoryBuffer> OldArchiveBuf,
std::vector<NewArchiveMember> *NewMembersP) {
std::vector<NewArchiveMember> NewMembers;
if (!NewMembersP)
NewMembers = computeNewArchiveMembers(Operation, OldArchive);
object::Archive::Kind Kind;
switch (FormatType) {
case Default:
if (Thin)
Kind = object::Archive::K_GNU;
else if (OldArchive)
Kind = OldArchive->kind();
else if (NewMembersP)
Kind = NewMembersP->size() ? getKindFromMember(NewMembersP->front())
: getDefaultForHost();
else
Kind = NewMembers.size() ? getKindFromMember(NewMembers.front())
: getDefaultForHost();
break;
case GNU:
Kind = object::Archive::K_GNU;
break;
case BSD:
if (Thin)
fail("Only the gnu format has a thin mode");
Kind = object::Archive::K_BSD;
break;
case DARWIN:
if (Thin)
fail("Only the gnu format has a thin mode");
Kind = object::Archive::K_DARWIN;
break;
case Unknown:
llvm_unreachable("");
}
Error E =
writeArchive(ArchiveName, NewMembersP ? *NewMembersP : NewMembers, Symtab,
Kind, Deterministic, Thin, std::move(OldArchiveBuf));
failIfError(std::move(E), ArchiveName);
}
static void createSymbolTable(object::Archive *OldArchive) {
// When an archive is created or modified, if the s option is given, the
// resulting archive will have a current symbol table. If the S option
// is given, it will have no symbol table.
// In summary, we only need to update the symbol table if we have none.
// This is actually very common because of broken build systems that think
// they have to run ranlib.
if (OldArchive->hasSymbolTable())
return;
performWriteOperation(CreateSymTab, OldArchive, nullptr, nullptr);
}
static void performOperation(ArchiveOperation Operation,
object::Archive *OldArchive,
std::unique_ptr<MemoryBuffer> OldArchiveBuf,
std::vector<NewArchiveMember> *NewMembers) {
switch (Operation) {
case Print:
case DisplayTable:
case Extract:
performReadOperation(Operation, OldArchive);
return;
case Delete:
case Move:
case QuickAppend:
case ReplaceOrInsert:
performWriteOperation(Operation, OldArchive, std::move(OldArchiveBuf),
NewMembers);
return;
case CreateSymTab:
createSymbolTable(OldArchive);
return;
}
llvm_unreachable("Unknown operation.");
}
static int performOperation(ArchiveOperation Operation,
std::vector<NewArchiveMember> *NewMembers) {
// Create or open the archive object.
ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
MemoryBuffer::getFile(ArchiveName, -1, false);
std::error_code EC = Buf.getError();
if (EC && EC != errc::no_such_file_or_directory)
fail("error opening '" + ArchiveName + "': " + EC.message() + "!");
if (!EC) {
Error Err = Error::success();
object::Archive Archive(Buf.get()->getMemBufferRef(), Err);
EC = errorToErrorCode(std::move(Err));
failIfError(EC,
"error loading '" + ArchiveName + "': " + EC.message() + "!");
performOperation(Operation, &Archive, std::move(Buf.get()), NewMembers);
return 0;
}
assert(EC == errc::no_such_file_or_directory);
if (!shouldCreateArchive(Operation)) {
failIfError(EC, Twine("error loading '") + ArchiveName + "'");
} else {
if (!Create) {
// Produce a warning if we should and we're creating the archive
errs() << ToolName << ": creating " << ArchiveName << "\n";
}
}
performOperation(Operation, nullptr, nullptr, NewMembers);
return 0;
}
static void runMRIScript() {
enum class MRICommand { AddLib, AddMod, Create, Delete, Save, End, Invalid };
ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN();
failIfError(Buf.getError());
const MemoryBuffer &Ref = *Buf.get();
bool Saved = false;
std::vector<NewArchiveMember> NewMembers;
std::vector<std::unique_ptr<MemoryBuffer>> ArchiveBuffers;
std::vector<std::unique_ptr<object::Archive>> Archives;
for (line_iterator I(Ref, /*SkipBlanks*/ true, ';'), E; I != E; ++I) {
StringRef Line = *I;
StringRef CommandStr, Rest;
std::tie(CommandStr, Rest) = Line.split(' ');
Rest = Rest.trim();
if (!Rest.empty() && Rest.front() == '"' && Rest.back() == '"')
Rest = Rest.drop_front().drop_back();
auto Command = StringSwitch<MRICommand>(CommandStr.lower())
.Case("addlib", MRICommand::AddLib)
.Case("addmod", MRICommand::AddMod)
.Case("create", MRICommand::Create)
.Case("delete", MRICommand::Delete)
.Case("save", MRICommand::Save)
.Case("end", MRICommand::End)
.Default(MRICommand::Invalid);
switch (Command) {
case MRICommand::AddLib: {
auto BufOrErr = MemoryBuffer::getFile(Rest, -1, false);
failIfError(BufOrErr.getError(), "Could not open library");
ArchiveBuffers.push_back(std::move(*BufOrErr));
auto LibOrErr =
object::Archive::create(ArchiveBuffers.back()->getMemBufferRef());
failIfError(errorToErrorCode(LibOrErr.takeError()),
"Could not parse library");
Archives.push_back(std::move(*LibOrErr));
object::Archive &Lib = *Archives.back();
{
Error Err = Error::success();
for (auto &Member : Lib.children(Err))
addMember(NewMembers, Member);
failIfError(std::move(Err));
}
break;
}
case MRICommand::AddMod:
addMember(NewMembers, Rest);
break;
case MRICommand::Create:
Create = true;
if (!ArchiveName.empty())
fail("Editing multiple archives not supported");
if (Saved)
fail("File already saved");
ArchiveName = Rest;
break;
case MRICommand::Delete: {
StringRef Name = sys::path::filename(Rest);
llvm::erase_if(NewMembers,
[=](NewArchiveMember &M) { return M.MemberName == Name; });
break;
}
case MRICommand::Save:
Saved = true;
break;
case MRICommand::End:
break;
case MRICommand::Invalid:
fail("Unknown command: " + CommandStr);
}
}
// Nothing to do if not saved.
if (Saved)
performOperation(ReplaceOrInsert, &NewMembers);
exit(0);
}
static bool handleGenericOption(StringRef arg) {
if (arg == "-help" || arg == "--help") {
printHelpMessage();
return true;
}
if (arg == "-version" || arg == "--version") {
cl::PrintVersionMessage();
return true;
}
return false;
}
static int ar_main(int argc, char **argv) {
SmallVector<const char *, 0> Argv(argv, argv + argc);
BumpPtrAllocator Alloc;
StringSaver Saver(Alloc);
cl::ExpandResponseFiles(Saver, cl::TokenizeGNUCommandLine, Argv);
for(size_t i = 1; i < Argv.size(); ++i) {
StringRef Arg = Argv[i];
const char *match;
auto MatchFlagWithArg = [&](const char *expected) {
size_t len = strlen(expected);
if (Arg == expected) {
if (++i >= Argv.size())
fail(std::string(expected) + " requires an argument");
match = Argv[i];
return true;
}
if (Arg.startswith(expected) && Arg.size() > len &&
Arg[len] == '=') {
match = Arg.data() + len + 1;
return true;
}
return false;
};
if (handleGenericOption(Argv[i]))
return 0;
if (Arg == "--") {
for(; i < Argv.size(); ++i)
PositionalArgs.push_back(Argv[i]);
break;
}
if (Arg[0] == '-') {
if (Arg.startswith("--"))
Arg = Argv[i] + 2;
else
Arg = Argv[i] + 1;
if (Arg == "M") {
MRI = true;
} else if (MatchFlagWithArg("format")) {
FormatType = StringSwitch<Format>(match)
.Case("default", Default)
.Case("gnu", GNU)
.Case("darwin", DARWIN)
.Case("bsd", BSD)
.Default(Unknown);
if (FormatType == Unknown)
fail(std::string("Invalid format ") + match);
} else if (MatchFlagWithArg("plugin")) {
// Ignored.
} else {
Options += Argv[i] + 1;
}
} else if (Options.empty()) {
Options += Argv[i];
} else {
PositionalArgs.push_back(Argv[i]);
}
}
ArchiveOperation Operation = parseCommandLine();
return performOperation(Operation, nullptr);
}
static int ranlib_main(int argc, char **argv) {
bool ArchiveSpecified = false;
for(int i = 1; i < argc; ++i) {
if (handleGenericOption(argv[i])) {
return 0;
} else {
if (ArchiveSpecified)
fail("Exactly one archive should be specified");
ArchiveSpecified = true;
ArchiveName = argv[i];
}
}
return performOperation(CreateSymTab, nullptr);
}
int main(int argc, char **argv) {
InitLLVM X(argc, argv);
ToolName = argv[0];
llvm::InitializeAllTargetInfos();
llvm::InitializeAllTargetMCs();
llvm::InitializeAllAsmParsers();
Stem = sys::path::stem(ToolName);
if (Stem.contains_lower("dlltool"))
return dlltoolDriverMain(makeArrayRef(argv, argc));
if (Stem.contains_lower("ranlib"))
return ranlib_main(argc, argv);
if (Stem.contains_lower("lib"))
return libDriverMain(makeArrayRef(argv, argc));
if (Stem.contains_lower("ar"))
return ar_main(argc, argv);
fail("Not ranlib, ar, lib or dlltool!");
}
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