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| 1 | //===-- llvm-ar.cpp - LLVM archive librarian utility ----------------------===// |
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Builds up (relatively) standard unix archive files (.a) containing LLVM |
| 10 | // bitcode or other files. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "llvm/ADT/StringExtras.h" |
| 15 | #include "llvm/ADT/StringSwitch.h" |
| 16 | #include "llvm/ADT/Triple.h" |
| 17 | #include "llvm/BinaryFormat/Magic.h" |
| 18 | #include "llvm/IR/LLVMContext.h" |
| 19 | #include "llvm/Object/Archive.h" |
| 20 | #include "llvm/Object/ArchiveWriter.h" |
| 21 | #include "llvm/Object/IRObjectFile.h" |
| 22 | #include "llvm/Object/MachO.h" |
| 23 | #include "llvm/Object/ObjectFile.h" |
| 24 | #include "llvm/Object/SymbolicFile.h" |
| 25 | #include "llvm/Support/Chrono.h" |
| 26 | #include "llvm/Support/CommandLine.h" |
| 27 | #include "llvm/Support/ConvertUTF.h" |
| 28 | #include "llvm/Support/Errc.h" |
| 29 | #include "llvm/Support/FileSystem.h" |
| 30 | #include "llvm/Support/Format.h" |
| 31 | #include "llvm/Support/FormatVariadic.h" |
| 32 | #include "llvm/Support/Host.h" |
| 33 | #include "llvm/Support/InitLLVM.h" |
| 34 | #include "llvm/Support/LineIterator.h" |
| 35 | #include "llvm/Support/MemoryBuffer.h" |
| 36 | #include "llvm/Support/Path.h" |
| 37 | #include "llvm/Support/Process.h" |
| 38 | #include "llvm/Support/StringSaver.h" |
| 39 | #include "llvm/Support/TargetSelect.h" |
| 40 | #include "llvm/Support/ToolOutputFile.h" |
| 41 | #include "llvm/Support/WithColor.h" |
| 42 | #include "llvm/Support/raw_ostream.h" |
| 43 | #include "llvm/ToolDrivers/llvm-dlltool/DlltoolDriver.h" |
| 44 | #include "llvm/ToolDrivers/llvm-lib/LibDriver.h" |
| 45 | |
| 46 | #if !defined(_MSC_VER) && !defined(__MINGW32__) |
| 47 | #include <unistd.h> |
| 48 | #else |
| 49 | #include <io.h> |
| 50 | #endif |
| 51 | |
| 52 | #ifdef _WIN32 |
| 53 | #include "llvm/Support/Windows/WindowsSupport.h" |
| 54 | #endif |
| 55 | |
| 56 | using namespace llvm; |
| 57 | |
| 58 | // The name this program was invoked as. |
| 59 | static StringRef ToolName; |
| 60 | |
| 61 | // The basename of this program. |
| 62 | static StringRef Stem; |
| 63 | |
| 64 | const char RanlibHelp[] = R"(OVERVIEW: LLVM Ranlib (llvm-ranlib) |
| 65 | |
| 66 | This program generates an index to speed access to archives |
| 67 | |
| 68 | USAGE: llvm-ranlib <archive-file> |
| 69 | |
| 70 | OPTIONS: |
| 71 | -h --help - Display available options |
| 72 | -v --version - Display the version of this program |
| 73 | -D - Use zero for timestamps and uids/gids (default) |
| 74 | -U - Use actual timestamps and uids/gids |
| 75 | )"; |
| 76 | |
| 77 | const char ArHelp[] = R"(OVERVIEW: LLVM Archiver |
| 78 | |
| 79 | USAGE: llvm-ar [options] [-]<operation>[modifiers] [relpos] [count] <archive> [files] |
| 80 | llvm-ar -M [<mri-script] |
| 81 | |
| 82 | OPTIONS: |
| 83 | --format - archive format to create |
| 84 | =default - default |
| 85 | =gnu - gnu |
| 86 | =darwin - darwin |
| 87 | =bsd - bsd |
| 88 | --plugin=<string> - ignored for compatibility |
| 89 | -h --help - display this help and exit |
| 90 | --rsp-quoting - quoting style for response files |
| 91 | =posix - posix |
| 92 | =windows - windows |
| 93 | --version - print the version and exit |
| 94 | @<file> - read options from <file> |
| 95 | |
| 96 | OPERATIONS: |
| 97 | d - delete [files] from the archive |
| 98 | m - move [files] in the archive |
| 99 | p - print [files] found in the archive |
| 100 | q - quick append [files] to the archive |
| 101 | r - replace or insert [files] into the archive |
| 102 | s - act as ranlib |
| 103 | t - display contents of archive |
| 104 | x - extract [files] from the archive |
| 105 | |
| 106 | MODIFIERS: |
| 107 | [a] - put [files] after [relpos] |
| 108 | [b] - put [files] before [relpos] (same as [i]) |
| 109 | [c] - do not warn if archive had to be created |
| 110 | [D] - use zero for timestamps and uids/gids (default) |
| 111 | [h] - display this help and exit |
| 112 | [i] - put [files] before [relpos] (same as [b]) |
| 113 | [l] - ignored for compatibility |
| 114 | [L] - add archive's contents |
| 115 | [N] - use instance [count] of name |
| 116 | [o] - preserve original dates |
| 117 | [O] - display member offsets |
| 118 | [P] - use full names when matching (implied for thin archives) |
| 119 | [s] - create an archive index (cf. ranlib) |
| 120 | [S] - do not build a symbol table |
| 121 | [T] - create a thin archive |
| 122 | [u] - update only [files] newer than archive contents |
| 123 | [U] - use actual timestamps and uids/gids |
| 124 | [v] - be verbose about actions taken |
| 125 | [V] - display the version and exit |
| 126 | )"; |
| 127 | |
| 128 | static void printHelpMessage() { |
| 129 | if (Stem.contains_lower("ranlib")) |
| 130 | outs() << RanlibHelp; |
| 131 | else if (Stem.contains_lower("ar")) |
| 132 | outs() << ArHelp; |
| 133 | } |
| 134 | |
| 135 | static unsigned MRILineNumber; |
| 136 | static bool ParsingMRIScript; |
| 137 | |
| 138 | // Show the error plus the usage message, and exit. |
| 139 | LLVM_ATTRIBUTE_NORETURN static void badUsage(Twine Error) { |
| 140 | WithColor::error(errs(), ToolName) << Error << "\n"; |
| 141 | printHelpMessage(); |
| 142 | exit(1); |
| 143 | } |
| 144 | |
| 145 | // Show the error message and exit. |
| 146 | LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) { |
| 147 | if (ParsingMRIScript) { |
| 148 | WithColor::error(errs(), ToolName) |
| 149 | << "script line " << MRILineNumber << ": " << Error << "\n"; |
| 150 | } else { |
| 151 | WithColor::error(errs(), ToolName) << Error << "\n"; |
| 152 | } |
| 153 | exit(1); |
| 154 | } |
| 155 | |
| 156 | static void failIfError(std::error_code EC, Twine Context = "") { |
| 157 | if (!EC) |
| 158 | return; |
| 159 | |
| 160 | std::string ContextStr = Context.str(); |
| 161 | if (ContextStr.empty()) |
| 162 | fail(EC.message()); |
| 163 | fail(Context + ": " + EC.message()); |
| 164 | } |
| 165 | |
| 166 | static void failIfError(Error E, Twine Context = "") { |
| 167 | if (!E) |
| 168 | return; |
| 169 | |
| 170 | handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EIB) { |
| 171 | std::string ContextStr = Context.str(); |
| 172 | if (ContextStr.empty()) |
| 173 | fail(EIB.message()); |
| 174 | fail(Context + ": " + EIB.message()); |
| 175 | }); |
| 176 | } |
| 177 | |
| 178 | static SmallVector<const char *, 256> PositionalArgs; |
| 179 | |
| 180 | static bool MRI; |
| 181 | |
| 182 | namespace { |
| 183 | enum Format { Default, GNU, BSD, DARWIN, Unknown }; |
| 184 | } |
| 185 | |
| 186 | static Format FormatType = Default; |
| 187 | |
| 188 | static std::string Options; |
| 189 | |
| 190 | // This enumeration delineates the kinds of operations on an archive |
| 191 | // that are permitted. |
| 192 | enum ArchiveOperation { |
| 193 | Print, ///< Print the contents of the archive |
| 194 | Delete, ///< Delete the specified members |
| 195 | Move, ///< Move members to end or as given by {a,b,i} modifiers |
| 196 | QuickAppend, ///< Quickly append to end of archive |
| 197 | ReplaceOrInsert, ///< Replace or Insert members |
| 198 | DisplayTable, ///< Display the table of contents |
| 199 | Extract, ///< Extract files back to file system |
| 200 | CreateSymTab ///< Create a symbol table in an existing archive |
| 201 | }; |
| 202 | |
| 203 | // Modifiers to follow operation to vary behavior |
| 204 | static bool AddAfter = false; ///< 'a' modifier |
| 205 | static bool AddBefore = false; ///< 'b' modifier |
| 206 | static bool Create = false; ///< 'c' modifier |
| 207 | static bool OriginalDates = false; ///< 'o' modifier |
| 208 | static bool DisplayMemberOffsets = false; ///< 'O' modifier |
| 209 | static bool CompareFullPath = false; ///< 'P' modifier |
| 210 | static bool OnlyUpdate = false; ///< 'u' modifier |
| 211 | static bool Verbose = false; ///< 'v' modifier |
| 212 | static bool Symtab = true; ///< 's' modifier |
| 213 | static bool Deterministic = true; ///< 'D' and 'U' modifiers |
| 214 | static bool Thin = false; ///< 'T' modifier |
| 215 | static bool AddLibrary = false; ///< 'L' modifier |
| 216 | |
| 217 | // Relative Positional Argument (for insert/move). This variable holds |
| 218 | // the name of the archive member to which the 'a', 'b' or 'i' modifier |
| 219 | // refers. Only one of 'a', 'b' or 'i' can be specified so we only need |
| 220 | // one variable. |
| 221 | static std::string RelPos; |
| 222 | |
| 223 | // Count parameter for 'N' modifier. This variable specifies which file should |
| 224 | // match for extract/delete operations when there are multiple matches. This is |
| 225 | // 1-indexed. A value of 0 is invalid, and implies 'N' is not used. |
| 226 | static int CountParam = 0; |
| 227 | |
| 228 | // This variable holds the name of the archive file as given on the |
| 229 | // command line. |
| 230 | static std::string ArchiveName; |
| 231 | |
| 232 | static std::vector<std::unique_ptr<MemoryBuffer>> ArchiveBuffers; |
| 233 | static std::vector<std::unique_ptr<object::Archive>> Archives; |
| 234 | |
| 235 | // This variable holds the list of member files to proecess, as given |
| 236 | // on the command line. |
| 237 | static std::vector<StringRef> Members; |
| 238 | |
| 239 | // Static buffer to hold StringRefs. |
| 240 | static BumpPtrAllocator Alloc; |
| 241 | |
| 242 | // Extract the member filename from the command line for the [relpos] argument |
| 243 | // associated with a, b, and i modifiers |
| 244 | static void getRelPos() { |
| 245 | if (PositionalArgs.empty()) |
| 246 | fail("expected [relpos] for 'a', 'b', or 'i' modifier"); |
| 247 | RelPos = PositionalArgs[0]; |
| 248 | PositionalArgs.erase(PositionalArgs.begin()); |
| 249 | } |
| 250 | |
| 251 | // Extract the parameter from the command line for the [count] argument |
| 252 | // associated with the N modifier |
| 253 | static void getCountParam() { |
| 254 | if (PositionalArgs.empty()) |
| 255 | badUsage("expected [count] for 'N' modifier"); |
| 256 | auto CountParamArg = StringRef(PositionalArgs[0]); |
| 257 | if (CountParamArg.getAsInteger(10, CountParam)) |
| 258 | badUsage("value for [count] must be numeric, got: " + CountParamArg); |
| 259 | if (CountParam < 1) |
| 260 | badUsage("value for [count] must be positive, got: " + CountParamArg); |
| 261 | PositionalArgs.erase(PositionalArgs.begin()); |
| 262 | } |
| 263 | |
| 264 | // Get the archive file name from the command line |
| 265 | static void getArchive() { |
| 266 | if (PositionalArgs.empty()) |
| 267 | badUsage("an archive name must be specified"); |
| 268 | ArchiveName = PositionalArgs[0]; |
| 269 | PositionalArgs.erase(PositionalArgs.begin()); |
| 270 | } |
| 271 | |
| 272 | static object::Archive &readLibrary(const Twine &Library) { |
| 273 | auto BufOrErr = MemoryBuffer::getFile(Library, -1, false); |
| 274 | failIfError(BufOrErr.getError(), "could not open library " + Library); |
| 275 | ArchiveBuffers.push_back(std::move(*BufOrErr)); |
| 276 | auto LibOrErr = |
| 277 | object::Archive::create(ArchiveBuffers.back()->getMemBufferRef()); |
| 278 | failIfError(errorToErrorCode(LibOrErr.takeError()), |
| 279 | "could not parse library"); |
| 280 | Archives.push_back(std::move(*LibOrErr)); |
| 281 | return *Archives.back(); |
| 282 | } |
| 283 | |
| 284 | static void runMRIScript(); |
| 285 | |
| 286 | // Parse the command line options as presented and return the operation |
| 287 | // specified. Process all modifiers and check to make sure that constraints on |
| 288 | // modifier/operation pairs have not been violated. |
| 289 | static ArchiveOperation parseCommandLine() { |
| 290 | if (MRI) { |
| 291 | if (!PositionalArgs.empty() || !Options.empty()) |
| 292 | badUsage("cannot mix -M and other options"); |
| 293 | runMRIScript(); |
| 294 | } |
| 295 | |
| 296 | // Keep track of number of operations. We can only specify one |
| 297 | // per execution. |
| 298 | unsigned NumOperations = 0; |
| 299 | |
| 300 | // Keep track of the number of positional modifiers (a,b,i). Only |
| 301 | // one can be specified. |
| 302 | unsigned NumPositional = 0; |
| 303 | |
| 304 | // Keep track of which operation was requested |
| 305 | ArchiveOperation Operation; |
| 306 | |
| 307 | bool MaybeJustCreateSymTab = false; |
| 308 | |
| 309 | for (unsigned i = 0; i < Options.size(); ++i) { |
| 310 | switch (Options[i]) { |
| 311 | case 'd': |
| 312 | ++NumOperations; |
| 313 | Operation = Delete; |
| 314 | break; |
| 315 | case 'm': |
| 316 | ++NumOperations; |
| 317 | Operation = Move; |
| 318 | break; |
| 319 | case 'p': |
| 320 | ++NumOperations; |
| 321 | Operation = Print; |
| 322 | break; |
| 323 | case 'q': |
| 324 | ++NumOperations; |
| 325 | Operation = QuickAppend; |
| 326 | break; |
| 327 | case 'r': |
| 328 | ++NumOperations; |
| 329 | Operation = ReplaceOrInsert; |
| 330 | break; |
| 331 | case 't': |
| 332 | ++NumOperations; |
| 333 | Operation = DisplayTable; |
| 334 | break; |
| 335 | case 'x': |
| 336 | ++NumOperations; |
| 337 | Operation = Extract; |
| 338 | break; |
| 339 | case 'c': |
| 340 | Create = true; |
| 341 | break; |
| 342 | case 'l': /* accepted but unused */ |
| 343 | break; |
| 344 | case 'o': |
| 345 | OriginalDates = true; |
| 346 | break; |
| 347 | case 'O': |
| 348 | DisplayMemberOffsets = true; |
| 349 | break; |
| 350 | case 'P': |
| 351 | CompareFullPath = true; |
| 352 | break; |
| 353 | case 's': |
| 354 | Symtab = true; |
| 355 | MaybeJustCreateSymTab = true; |
| 356 | break; |
| 357 | case 'S': |
| 358 | Symtab = false; |
| 359 | break; |
| 360 | case 'u': |
| 361 | OnlyUpdate = true; |
| 362 | break; |
| 363 | case 'v': |
| 364 | Verbose = true; |
| 365 | break; |
| 366 | case 'a': |
| 367 | getRelPos(); |
| 368 | AddAfter = true; |
| 369 | NumPositional++; |
| 370 | break; |
| 371 | case 'b': |
| 372 | getRelPos(); |
| 373 | AddBefore = true; |
| 374 | NumPositional++; |
| 375 | break; |
| 376 | case 'i': |
| 377 | getRelPos(); |
| 378 | AddBefore = true; |
| 379 | NumPositional++; |
| 380 | break; |
| 381 | case 'D': |
| 382 | Deterministic = true; |
| 383 | break; |
| 384 | case 'U': |
| 385 | Deterministic = false; |
| 386 | break; |
| 387 | case 'N': |
| 388 | getCountParam(); |
| 389 | break; |
| 390 | case 'T': |
| 391 | Thin = true; |
| 392 | // Thin archives store path names, so P should be forced. |
| 393 | CompareFullPath = true; |
| 394 | break; |
| 395 | case 'L': |
| 396 | AddLibrary = true; |
| 397 | break; |
| 398 | case 'V': |
| 399 | cl::PrintVersionMessage(); |
| 400 | exit(0); |
| 401 | case 'h': |
| 402 | printHelpMessage(); |
| 403 | exit(0); |
| 404 | default: |
| 405 | badUsage(std::string("unknown option ") + Options[i]); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | // At this point, the next thing on the command line must be |
| 410 | // the archive name. |
| 411 | getArchive(); |
| 412 | |
| 413 | // Everything on the command line at this point is a member. |
| 414 | Members.assign(PositionalArgs.begin(), PositionalArgs.end()); |
| 415 | |
| 416 | if (NumOperations == 0 && MaybeJustCreateSymTab) { |
| 417 | NumOperations = 1; |
| 418 | Operation = CreateSymTab; |
| 419 | if (!Members.empty()) |
| 420 | badUsage("the 's' operation takes only an archive as argument"); |
| 421 | } |
| 422 | |
| 423 | // Perform various checks on the operation/modifier specification |
| 424 | // to make sure we are dealing with a legal request. |
| 425 | if (NumOperations == 0) |
| 426 | badUsage("you must specify at least one of the operations"); |
| 427 | if (NumOperations > 1) |
| 428 | badUsage("only one operation may be specified"); |
| 429 | if (NumPositional > 1) |
| 430 | badUsage("you may only specify one of 'a', 'b', and 'i' modifiers"); |
| 431 | if (AddAfter || AddBefore) |
| 432 | if (Operation != Move && Operation != ReplaceOrInsert) |
| 433 | badUsage("the 'a', 'b' and 'i' modifiers can only be specified with " |
| 434 | "the 'm' or 'r' operations"); |
| 435 | if (CountParam) |
| 436 | if (Operation != Extract && Operation != Delete) |
| 437 | badUsage("the 'N' modifier can only be specified with the 'x' or 'd' " |
| 438 | "operations"); |
| 439 | if (OriginalDates && Operation != Extract) |
| 440 | badUsage("the 'o' modifier is only applicable to the 'x' operation"); |
| 441 | if (OnlyUpdate && Operation != ReplaceOrInsert) |
| 442 | badUsage("the 'u' modifier is only applicable to the 'r' operation"); |
| 443 | if (AddLibrary && Operation != QuickAppend) |
| 444 | badUsage("the 'L' modifier is only applicable to the 'q' operation"); |
| 445 | |
| 446 | // Return the parsed operation to the caller |
| 447 | return Operation; |
| 448 | } |
| 449 | |
| 450 | // Implements the 'p' operation. This function traverses the archive |
| 451 | // looking for members that match the path list. |
| 452 | static void doPrint(StringRef Name, const object::Archive::Child &C) { |
| 453 | if (Verbose) |
| 454 | outs() << "Printing " << Name << "\n"; |
| 455 | |
| 456 | Expected<StringRef> DataOrErr = C.getBuffer(); |
| 457 | failIfError(DataOrErr.takeError()); |
| 458 | StringRef Data = *DataOrErr; |
| 459 | outs().write(Data.data(), Data.size()); |
| 460 | } |
| 461 | |
| 462 | // Utility function for printing out the file mode when the 't' operation is in |
| 463 | // verbose mode. |
| 464 | static void printMode(unsigned mode) { |
| 465 | outs() << ((mode & 004) ? "r" : "-"); |
| 466 | outs() << ((mode & 002) ? "w" : "-"); |
| 467 | outs() << ((mode & 001) ? "x" : "-"); |
| 468 | } |
| 469 | |
| 470 | // Implement the 't' operation. This function prints out just |
| 471 | // the file names of each of the members. However, if verbose mode is requested |
| 472 | // ('v' modifier) then the file type, permission mode, user, group, size, and |
| 473 | // modification time are also printed. |
| 474 | static void doDisplayTable(StringRef Name, const object::Archive::Child &C) { |
| 475 | if (Verbose) { |
| 476 | Expected<sys::fs::perms> ModeOrErr = C.getAccessMode(); |
| 477 | failIfError(ModeOrErr.takeError()); |
| 478 | sys::fs::perms Mode = ModeOrErr.get(); |
| 479 | printMode((Mode >> 6) & 007); |
| 480 | printMode((Mode >> 3) & 007); |
| 481 | printMode(Mode & 007); |
| 482 | Expected<unsigned> UIDOrErr = C.getUID(); |
| 483 | failIfError(UIDOrErr.takeError()); |
| 484 | outs() << ' ' << UIDOrErr.get(); |
| 485 | Expected<unsigned> GIDOrErr = C.getGID(); |
| 486 | failIfError(GIDOrErr.takeError()); |
| 487 | outs() << '/' << GIDOrErr.get(); |
| 488 | Expected<uint64_t> Size = C.getSize(); |
| 489 | failIfError(Size.takeError()); |
| 490 | outs() << ' ' << format("%6llu", Size.get()); |
| 491 | auto ModTimeOrErr = C.getLastModified(); |
| 492 | failIfError(ModTimeOrErr.takeError()); |
| 493 | // Note: formatv() only handles the default TimePoint<>, which is in |
| 494 | // nanoseconds. |
| 495 | // TODO: fix format_provider<TimePoint<>> to allow other units. |
| 496 | sys::TimePoint<> ModTimeInNs = ModTimeOrErr.get(); |
| 497 | outs() << ' ' << formatv("{0:%b %e %H:%M %Y}", ModTimeInNs); |
| 498 | outs() << ' '; |
| 499 | } |
| 500 | |
| 501 | if (C.getParent()->isThin()) { |
| 502 | if (!sys::path::is_absolute(Name)) { |
| 503 | StringRef ParentDir = sys::path::parent_path(ArchiveName); |
| 504 | if (!ParentDir.empty()) |
| 505 | outs() << sys::path::convert_to_slash(ParentDir) << '/'; |
| 506 | } |
| 507 | outs() << Name; |
| 508 | } else { |
| 509 | outs() << Name; |
| 510 | if (DisplayMemberOffsets) |
| 511 | outs() << " 0x" << utohexstr(C.getDataOffset(), true); |
| 512 | } |
| 513 | outs() << '\n'; |
| 514 | } |
| 515 | |
| 516 | static std::string normalizePath(StringRef Path) { |
| 517 | return CompareFullPath ? sys::path::convert_to_slash(Path) |
| 518 | : std::string(sys::path::filename(Path)); |
| 519 | } |
| 520 | |
| 521 | static bool comparePaths(StringRef Path1, StringRef Path2) { |
| 522 | // When on Windows this function calls CompareStringOrdinal |
| 523 | // as Windows file paths are case-insensitive. |
| 524 | // CompareStringOrdinal compares two Unicode strings for |
| 525 | // binary equivalence and allows for case insensitivity. |
| 526 | #ifdef _WIN32 |
| 527 | SmallVector<wchar_t, 128> WPath1, WPath2; |
| 528 | failIfError(sys::windows::UTF8ToUTF16(normalizePath(Path1), WPath1)); |
| 529 | failIfError(sys::windows::UTF8ToUTF16(normalizePath(Path2), WPath2)); |
| 530 | |
| 531 | return CompareStringOrdinal(WPath1.data(), WPath1.size(), WPath2.data(), |
| 532 | WPath2.size(), true) == CSTR_EQUAL; |
| 533 | #else |
| 534 | return normalizePath(Path1) == normalizePath(Path2); |
| 535 | #endif |
| 536 | } |
| 537 | |
| 538 | // Implement the 'x' operation. This function extracts files back to the file |
| 539 | // system. |
| 540 | static void doExtract(StringRef Name, const object::Archive::Child &C) { |
| 541 | // Retain the original mode. |
| 542 | Expected<sys::fs::perms> ModeOrErr = C.getAccessMode(); |
| 543 | failIfError(ModeOrErr.takeError()); |
| 544 | sys::fs::perms Mode = ModeOrErr.get(); |
| 545 | |
| 546 | llvm::StringRef outputFilePath = sys::path::filename(Name); |
| 547 | if (Verbose) |
| 548 | outs() << "x - " << outputFilePath << '\n'; |
| 549 | |
| 550 | int FD; |
| 551 | failIfError(sys::fs::openFileForWrite(outputFilePath, FD, |
| 552 | sys::fs::CD_CreateAlways, |
| 553 | sys::fs::OF_None, Mode), |
| 554 | Name); |
| 555 | |
| 556 | { |
| 557 | raw_fd_ostream file(FD, false); |
| 558 | |
| 559 | // Get the data and its length |
| 560 | Expected<StringRef> BufOrErr = C.getBuffer(); |
| 561 | failIfError(BufOrErr.takeError()); |
| 562 | StringRef Data = BufOrErr.get(); |
| 563 | |
| 564 | // Write the data. |
| 565 | file.write(Data.data(), Data.size()); |
| 566 | } |
| 567 | |
| 568 | // If we're supposed to retain the original modification times, etc. do so |
| 569 | // now. |
| 570 | if (OriginalDates) { |
| 571 | auto ModTimeOrErr = C.getLastModified(); |
| 572 | failIfError(ModTimeOrErr.takeError()); |
| 573 | failIfError( |
| 574 | sys::fs::setLastAccessAndModificationTime(FD, ModTimeOrErr.get())); |
| 575 | } |
| 576 | |
| 577 | if (close(FD)) |
| 578 | fail("Could not close the file"); |
| 579 | } |
| 580 | |
| 581 | static bool shouldCreateArchive(ArchiveOperation Op) { |
| 582 | switch (Op) { |
| 583 | case Print: |
| 584 | case Delete: |
| 585 | case Move: |
| 586 | case DisplayTable: |
| 587 | case Extract: |
| 588 | case CreateSymTab: |
| 589 | return false; |
| 590 | |
| 591 | case QuickAppend: |
| 592 | case ReplaceOrInsert: |
| 593 | return true; |
| 594 | } |
| 595 | |
| 596 | llvm_unreachable("Missing entry in covered switch."); |
| 597 | } |
| 598 | |
| 599 | static void performReadOperation(ArchiveOperation Operation, |
| 600 | object::Archive *OldArchive) { |
| 601 | if (Operation == Extract && OldArchive->isThin()) |
| 602 | fail("extracting from a thin archive is not supported"); |
| 603 | |
| 604 | bool Filter = !Members.empty(); |
| 605 | StringMap<int> MemberCount; |
| 606 | { |
| 607 | Error Err = Error::success(); |
| 608 | for (auto &C : OldArchive->children(Err)) { |
| 609 | Expected<StringRef> NameOrErr = C.getName(); |
| 610 | failIfError(NameOrErr.takeError()); |
| 611 | StringRef Name = NameOrErr.get(); |
| 612 | |
| 613 | if (Filter) { |
| 614 | auto I = find_if(Members, [Name](StringRef Path) { |
| 615 | return comparePaths(Name, Path); |
| 616 | }); |
| 617 | if (I == Members.end()) |
| 618 | continue; |
| 619 | if (CountParam && ++MemberCount[Name] != CountParam) |
| 620 | continue; |
| 621 | Members.erase(I); |
| 622 | } |
| 623 | |
| 624 | switch (Operation) { |
| 625 | default: |
| 626 | llvm_unreachable("Not a read operation"); |
| 627 | case Print: |
| 628 | doPrint(Name, C); |
| 629 | break; |
| 630 | case DisplayTable: |
| 631 | doDisplayTable(Name, C); |
| 632 | break; |
| 633 | case Extract: |
| 634 | doExtract(Name, C); |
| 635 | break; |
| 636 | } |
| 637 | } |
| 638 | failIfError(std::move(Err)); |
| 639 | } |
| 640 | |
| 641 | if (Members.empty()) |
| 642 | return; |
| 643 | for (StringRef Name : Members) |
| 644 | WithColor::error(errs(), ToolName) << "'" << Name << "' was not found\n"; |
| 645 | exit(1); |
| 646 | } |
| 647 | |
| 648 | static void addChildMember(std::vector<NewArchiveMember> &Members, |
| 649 | const object::Archive::Child &M, |
| 650 | bool FlattenArchive = false) { |
| 651 | if (Thin && !M.getParent()->isThin()) |
| 652 | fail("cannot convert a regular archive to a thin one"); |
| 653 | Expected<NewArchiveMember> NMOrErr = |
| 654 | NewArchiveMember::getOldMember(M, Deterministic); |
| 655 | failIfError(NMOrErr.takeError()); |
| 656 | // If the child member we're trying to add is thin, use the path relative to |
| 657 | // the archive it's in, so the file resolves correctly. |
| 658 | if (Thin && FlattenArchive) { |
| 659 | StringSaver Saver(Alloc); |
| 660 | Expected<std::string> FileNameOrErr(M.getName()); |
| 661 | failIfError(FileNameOrErr.takeError()); |
| 662 | if (sys::path::is_absolute(*FileNameOrErr)) { |
| 663 | NMOrErr->MemberName = Saver.save(sys::path::convert_to_slash(*FileNameOrErr)); |
| 664 | } else { |
| 665 | FileNameOrErr = M.getFullName(); |
| 666 | failIfError(FileNameOrErr.takeError()); |
| 667 | Expected<std::string> PathOrErr = |
| 668 | computeArchiveRelativePath(ArchiveName, *FileNameOrErr); |
| 669 | NMOrErr->MemberName = Saver.save( |
| 670 | PathOrErr ? *PathOrErr : sys::path::convert_to_slash(*FileNameOrErr)); |
| 671 | } |
| 672 | } |
| 673 | if (FlattenArchive && |
| 674 | identify_magic(NMOrErr->Buf->getBuffer()) == file_magic::archive) { |
| 675 | Expected<std::string> FileNameOrErr = M.getFullName(); |
| 676 | failIfError(FileNameOrErr.takeError()); |
| 677 | object::Archive &Lib = readLibrary(*FileNameOrErr); |
| 678 | // When creating thin archives, only flatten if the member is also thin. |
| 679 | if (!Thin || Lib.isThin()) { |
| 680 | Error Err = Error::success(); |
| 681 | // Only Thin archives are recursively flattened. |
| 682 | for (auto &Child : Lib.children(Err)) |
| 683 | addChildMember(Members, Child, /*FlattenArchive=*/Thin); |
| 684 | failIfError(std::move(Err)); |
| 685 | return; |
| 686 | } |
| 687 | } |
| 688 | Members.push_back(std::move(*NMOrErr)); |
| 689 | } |
| 690 | |
| 691 | static void addMember(std::vector<NewArchiveMember> &Members, |
| 692 | StringRef FileName, bool FlattenArchive = false) { |
| 693 | Expected<NewArchiveMember> NMOrErr = |
| 694 | NewArchiveMember::getFile(FileName, Deterministic); |
| 695 | failIfError(NMOrErr.takeError(), FileName); |
| 696 | StringSaver Saver(Alloc); |
| 697 | // For regular archives, use the basename of the object path for the member |
| 698 | // name. For thin archives, use the full relative paths so the file resolves |
| 699 | // correctly. |
| 700 | if (!Thin) { |
| 701 | NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName); |
| 702 | } else { |
| 703 | if (sys::path::is_absolute(FileName)) |
| 704 | NMOrErr->MemberName = Saver.save(sys::path::convert_to_slash(FileName)); |
| 705 | else { |
| 706 | Expected<std::string> PathOrErr = |
| 707 | computeArchiveRelativePath(ArchiveName, FileName); |
| 708 | NMOrErr->MemberName = Saver.save( |
| 709 | PathOrErr ? *PathOrErr : sys::path::convert_to_slash(FileName)); |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | if (FlattenArchive && |
| 714 | identify_magic(NMOrErr->Buf->getBuffer()) == file_magic::archive) { |
| 715 | object::Archive &Lib = readLibrary(FileName); |
| 716 | // When creating thin archives, only flatten if the member is also thin. |
| 717 | if (!Thin || Lib.isThin()) { |
| 718 | Error Err = Error::success(); |
| 719 | // Only Thin archives are recursively flattened. |
| 720 | for (auto &Child : Lib.children(Err)) |
| 721 | addChildMember(Members, Child, /*FlattenArchive=*/Thin); |
| 722 | failIfError(std::move(Err)); |
| 723 | return; |
| 724 | } |
| 725 | } |
| 726 | Members.push_back(std::move(*NMOrErr)); |
| 727 | } |
| 728 | |
| 729 | enum InsertAction { |
| 730 | IA_AddOldMember, |
| 731 | IA_AddNewMember, |
| 732 | IA_Delete, |
| 733 | IA_MoveOldMember, |
| 734 | IA_MoveNewMember |
| 735 | }; |
| 736 | |
| 737 | static InsertAction computeInsertAction(ArchiveOperation Operation, |
| 738 | const object::Archive::Child &Member, |
| 739 | StringRef Name, |
| 740 | std::vector<StringRef>::iterator &Pos, |
| 741 | StringMap<int> &MemberCount) { |
| 742 | if (Operation == QuickAppend || Members.empty()) |
| 743 | return IA_AddOldMember; |
| 744 | auto MI = find_if( |
| 745 | Members, [Name](StringRef Path) { return comparePaths(Name, Path); }); |
| 746 | |
| 747 | if (MI == Members.end()) |
| 748 | return IA_AddOldMember; |
| 749 | |
| 750 | Pos = MI; |
| 751 | |
| 752 | if (Operation == Delete) { |
| 753 | if (CountParam && ++MemberCount[Name] != CountParam) |
| 754 | return IA_AddOldMember; |
| 755 | return IA_Delete; |
| 756 | } |
| 757 | |
| 758 | if (Operation == Move) |
| 759 | return IA_MoveOldMember; |
| 760 | |
| 761 | if (Operation == ReplaceOrInsert) { |
| 762 | if (!OnlyUpdate) { |
| 763 | if (RelPos.empty()) |
| 764 | return IA_AddNewMember; |
| 765 | return IA_MoveNewMember; |
| 766 | } |
| 767 | |
| 768 | // We could try to optimize this to a fstat, but it is not a common |
| 769 | // operation. |
| 770 | sys::fs::file_status Status; |
| 771 | failIfError(sys::fs::status(*MI, Status), *MI); |
| 772 | auto ModTimeOrErr = Member.getLastModified(); |
| 773 | failIfError(ModTimeOrErr.takeError()); |
| 774 | if (Status.getLastModificationTime() < ModTimeOrErr.get()) { |
| 775 | if (RelPos.empty()) |
| 776 | return IA_AddOldMember; |
| 777 | return IA_MoveOldMember; |
| 778 | } |
| 779 | |
| 780 | if (RelPos.empty()) |
| 781 | return IA_AddNewMember; |
| 782 | return IA_MoveNewMember; |
| 783 | } |
| 784 | llvm_unreachable("No such operation"); |
| 785 | } |
| 786 | |
| 787 | // We have to walk this twice and computing it is not trivial, so creating an |
| 788 | // explicit std::vector is actually fairly efficient. |
| 789 | static std::vector<NewArchiveMember> |
| 790 | computeNewArchiveMembers(ArchiveOperation Operation, |
| 791 | object::Archive *OldArchive) { |
| 792 | std::vector<NewArchiveMember> Ret; |
| 793 | std::vector<NewArchiveMember> Moved; |
| 794 | int InsertPos = -1; |
| 795 | if (OldArchive) { |
| 796 | Error Err = Error::success(); |
| 797 | StringMap<int> MemberCount; |
| 798 | for (auto &Child : OldArchive->children(Err)) { |
| 799 | int Pos = Ret.size(); |
| 800 | Expected<StringRef> NameOrErr = Child.getName(); |
| 801 | failIfError(NameOrErr.takeError()); |
| 802 | std::string Name = std::string(NameOrErr.get()); |
| 803 | if (comparePaths(Name, RelPos)) { |
| 804 | assert(AddAfter || AddBefore); |
| 805 | if (AddBefore) |
| 806 | InsertPos = Pos; |
| 807 | else |
| 808 | InsertPos = Pos + 1; |
| 809 | } |
| 810 | |
| 811 | std::vector<StringRef>::iterator MemberI = Members.end(); |
| 812 | InsertAction Action = |
| 813 | computeInsertAction(Operation, Child, Name, MemberI, MemberCount); |
| 814 | switch (Action) { |
| 815 | case IA_AddOldMember: |
| 816 | addChildMember(Ret, Child, /*FlattenArchive=*/Thin); |
| 817 | break; |
| 818 | case IA_AddNewMember: |
| 819 | addMember(Ret, *MemberI); |
| 820 | break; |
| 821 | case IA_Delete: |
| 822 | break; |
| 823 | case IA_MoveOldMember: |
| 824 | addChildMember(Moved, Child, /*FlattenArchive=*/Thin); |
| 825 | break; |
| 826 | case IA_MoveNewMember: |
| 827 | addMember(Moved, *MemberI); |
| 828 | break; |
| 829 | } |
| 830 | // When processing elements with the count param, we need to preserve the |
| 831 | // full members list when iterating over all archive members. For |
| 832 | // instance, "llvm-ar dN 2 archive.a member.o" should delete the second |
| 833 | // file named member.o it sees; we are not done with member.o the first |
| 834 | // time we see it in the archive. |
| 835 | if (MemberI != Members.end() && !CountParam) |
| 836 | Members.erase(MemberI); |
| 837 | } |
| 838 | failIfError(std::move(Err)); |
| 839 | } |
| 840 | |
| 841 | if (Operation == Delete) |
| 842 | return Ret; |
| 843 | |
| 844 | if (!RelPos.empty() && InsertPos == -1) |
| 845 | fail("insertion point not found"); |
| 846 | |
| 847 | if (RelPos.empty()) |
| 848 | InsertPos = Ret.size(); |
| 849 | |
| 850 | assert(unsigned(InsertPos) <= Ret.size()); |
| 851 | int Pos = InsertPos; |
| 852 | for (auto &M : Moved) { |
| 853 | Ret.insert(Ret.begin() + Pos, std::move(M)); |
| 854 | ++Pos; |
| 855 | } |
| 856 | |
| 857 | if (AddLibrary) { |
| 858 | assert(Operation == QuickAppend); |
| 859 | for (auto &Member : Members) |
| 860 | addMember(Ret, Member, /*FlattenArchive=*/true); |
| 861 | return Ret; |
| 862 | } |
| 863 | |
| 864 | std::vector<NewArchiveMember> NewMembers; |
| 865 | for (auto &Member : Members) |
| 866 | addMember(NewMembers, Member, /*FlattenArchive=*/Thin); |
| 867 | Ret.reserve(Ret.size() + NewMembers.size()); |
| 868 | std::move(NewMembers.begin(), NewMembers.end(), |
| 869 | std::inserter(Ret, std::next(Ret.begin(), InsertPos))); |
| 870 | |
| 871 | return Ret; |
| 872 | } |
| 873 | |
| 874 | static object::Archive::Kind getDefaultForHost() { |
| 875 | return Triple(sys::getProcessTriple()).isOSDarwin() |
| 876 | ? object::Archive::K_DARWIN |
| 877 | : object::Archive::K_GNU; |
| 878 | } |
| 879 | |
| 880 | static object::Archive::Kind getKindFromMember(const NewArchiveMember &Member) { |
| 881 | auto MemBufferRef = Member.Buf->getMemBufferRef(); |
| 882 | Expected<std::unique_ptr<object::ObjectFile>> OptionalObject = |
| 883 | object::ObjectFile::createObjectFile(MemBufferRef); |
| 884 | |
| 885 | if (OptionalObject) |
| 886 | return isa<object::MachOObjectFile>(**OptionalObject) |
| 887 | ? object::Archive::K_DARWIN |
| 888 | : object::Archive::K_GNU; |
| 889 | |
| 890 | // squelch the error in case we had a non-object file |
| 891 | consumeError(OptionalObject.takeError()); |
| 892 | |
| 893 | // If we're adding a bitcode file to the archive, detect the Archive kind |
| 894 | // based on the target triple. |
| 895 | LLVMContext Context; |
| 896 | if (identify_magic(MemBufferRef.getBuffer()) == file_magic::bitcode) { |
| 897 | if (auto ObjOrErr = object::SymbolicFile::createSymbolicFile( |
| 898 | MemBufferRef, file_magic::bitcode, &Context)) { |
| 899 | auto &IRObject = cast<object::IRObjectFile>(**ObjOrErr); |
| 900 | return Triple(IRObject.getTargetTriple()).isOSDarwin() |
| 901 | ? object::Archive::K_DARWIN |
| 902 | : object::Archive::K_GNU; |
| 903 | } else { |
| 904 | // Squelch the error in case this was not a SymbolicFile. |
| 905 | consumeError(ObjOrErr.takeError()); |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | return getDefaultForHost(); |
| 910 | } |
| 911 | |
| 912 | static void performWriteOperation(ArchiveOperation Operation, |
| 913 | object::Archive *OldArchive, |
| 914 | std::unique_ptr<MemoryBuffer> OldArchiveBuf, |
| 915 | std::vector<NewArchiveMember> *NewMembersP) { |
| 916 | std::vector<NewArchiveMember> NewMembers; |
| 917 | if (!NewMembersP) |
| 918 | NewMembers = computeNewArchiveMembers(Operation, OldArchive); |
| 919 | |
| 920 | object::Archive::Kind Kind; |
| 921 | switch (FormatType) { |
| 922 | case Default: |
| 923 | if (Thin) |
| 924 | Kind = object::Archive::K_GNU; |
| 925 | else if (OldArchive) |
| 926 | Kind = OldArchive->kind(); |
| 927 | else if (NewMembersP) |
| 928 | Kind = !NewMembersP->empty() ? getKindFromMember(NewMembersP->front()) |
| 929 | : getDefaultForHost(); |
| 930 | else |
| 931 | Kind = !NewMembers.empty() ? getKindFromMember(NewMembers.front()) |
| 932 | : getDefaultForHost(); |
| 933 | break; |
| 934 | case GNU: |
| 935 | Kind = object::Archive::K_GNU; |
| 936 | break; |
| 937 | case BSD: |
| 938 | if (Thin) |
| 939 | fail("only the gnu format has a thin mode"); |
| 940 | Kind = object::Archive::K_BSD; |
| 941 | break; |
| 942 | case DARWIN: |
| 943 | if (Thin) |
| 944 | fail("only the gnu format has a thin mode"); |
| 945 | Kind = object::Archive::K_DARWIN; |
| 946 | break; |
| 947 | case Unknown: |
| 948 | llvm_unreachable(""); |
| 949 | } |
| 950 | |
| 951 | Error E = |
| 952 | writeArchive(ArchiveName, NewMembersP ? *NewMembersP : NewMembers, Symtab, |
| 953 | Kind, Deterministic, Thin, std::move(OldArchiveBuf)); |
| 954 | failIfError(std::move(E), ArchiveName); |
| 955 | } |
| 956 | |
| 957 | static void createSymbolTable(object::Archive *OldArchive) { |
| 958 | // When an archive is created or modified, if the s option is given, the |
| 959 | // resulting archive will have a current symbol table. If the S option |
| 960 | // is given, it will have no symbol table. |
| 961 | // In summary, we only need to update the symbol table if we have none. |
| 962 | // This is actually very common because of broken build systems that think |
| 963 | // they have to run ranlib. |
| 964 | if (OldArchive->hasSymbolTable()) |
| 965 | return; |
| 966 | |
| 967 | performWriteOperation(CreateSymTab, OldArchive, nullptr, nullptr); |
| 968 | } |
| 969 | |
| 970 | static void performOperation(ArchiveOperation Operation, |
| 971 | object::Archive *OldArchive, |
| 972 | std::unique_ptr<MemoryBuffer> OldArchiveBuf, |
| 973 | std::vector<NewArchiveMember> *NewMembers) { |
| 974 | switch (Operation) { |
| 975 | case Print: |
| 976 | case DisplayTable: |
| 977 | case Extract: |
| 978 | performReadOperation(Operation, OldArchive); |
| 979 | return; |
| 980 | |
| 981 | case Delete: |
| 982 | case Move: |
| 983 | case QuickAppend: |
| 984 | case ReplaceOrInsert: |
| 985 | performWriteOperation(Operation, OldArchive, std::move(OldArchiveBuf), |
| 986 | NewMembers); |
| 987 | return; |
| 988 | case CreateSymTab: |
| 989 | createSymbolTable(OldArchive); |
| 990 | return; |
| 991 | } |
| 992 | llvm_unreachable("Unknown operation."); |
| 993 | } |
| 994 | |
| 995 | static int performOperation(ArchiveOperation Operation, |
| 996 | std::vector<NewArchiveMember> *NewMembers) { |
| 997 | // Create or open the archive object. |
| 998 | ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = |
| 999 | MemoryBuffer::getFile(ArchiveName, -1, false); |
| 1000 | std::error_code EC = Buf.getError(); |
| 1001 | if (EC && EC != errc::no_such_file_or_directory) |
| 1002 | fail("unable to open '" + ArchiveName + "': " + EC.message()); |
| 1003 | |
| 1004 | if (!EC) { |
| 1005 | Error Err = Error::success(); |
| 1006 | object::Archive Archive(Buf.get()->getMemBufferRef(), Err); |
| 1007 | failIfError(std::move(Err), "unable to load '" + ArchiveName + "'"); |
| 1008 | if (Archive.isThin()) |
| 1009 | CompareFullPath = true; |
| 1010 | performOperation(Operation, &Archive, std::move(Buf.get()), NewMembers); |
| 1011 | return 0; |
| 1012 | } |
| 1013 | |
| 1014 | assert(EC == errc::no_such_file_or_directory); |
| 1015 | |
| 1016 | if (!shouldCreateArchive(Operation)) { |
| 1017 | failIfError(EC, Twine("unable to load '") + ArchiveName + "'"); |
| 1018 | } else { |
| 1019 | if (!Create) { |
| 1020 | // Produce a warning if we should and we're creating the archive |
| 1021 | WithColor::warning(errs(), ToolName) |
| 1022 | << "creating " << ArchiveName << "\n"; |
| 1023 | } |
| 1024 | } |
| 1025 | |
| 1026 | performOperation(Operation, nullptr, nullptr, NewMembers); |
| 1027 | return 0; |
| 1028 | } |
| 1029 | |
| 1030 | static void runMRIScript() { |
| 1031 | enum class MRICommand { AddLib, AddMod, Create, CreateThin, Delete, Save, End, Invalid }; |
| 1032 | |
| 1033 | ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN(); |
| 1034 | failIfError(Buf.getError()); |
| 1035 | const MemoryBuffer &Ref = *Buf.get(); |
| 1036 | bool Saved = false; |
| 1037 | std::vector<NewArchiveMember> NewMembers; |
| 1038 | ParsingMRIScript = true; |
| 1039 | |
| 1040 | for (line_iterator I(Ref, /*SkipBlanks*/ false), E; I != E; ++I) { |
| 1041 | ++MRILineNumber; |
| 1042 | StringRef Line = *I; |
| 1043 | Line = Line.split(';').first; |
| 1044 | Line = Line.split('*').first; |
| 1045 | Line = Line.trim(); |
| 1046 | if (Line.empty()) |
| 1047 | continue; |
| 1048 | StringRef CommandStr, Rest; |
| 1049 | std::tie(CommandStr, Rest) = Line.split(' '); |
| 1050 | Rest = Rest.trim(); |
| 1051 | if (!Rest.empty() && Rest.front() == '"' && Rest.back() == '"') |
| 1052 | Rest = Rest.drop_front().drop_back(); |
| 1053 | auto Command = StringSwitch<MRICommand>(CommandStr.lower()) |
| 1054 | .Case("addlib", MRICommand::AddLib) |
| 1055 | .Case("addmod", MRICommand::AddMod) |
| 1056 | .Case("create", MRICommand::Create) |
| 1057 | .Case("createthin", MRICommand::CreateThin) |
| 1058 | .Case("delete", MRICommand::Delete) |
| 1059 | .Case("save", MRICommand::Save) |
| 1060 | .Case("end", MRICommand::End) |
| 1061 | .Default(MRICommand::Invalid); |
| 1062 | |
| 1063 | switch (Command) { |
| 1064 | case MRICommand::AddLib: { |
| 1065 | object::Archive &Lib = readLibrary(Rest); |
| 1066 | { |
| 1067 | Error Err = Error::success(); |
| 1068 | for (auto &Member : Lib.children(Err)) |
| 1069 | addChildMember(NewMembers, Member, /*FlattenArchive=*/Thin); |
| 1070 | failIfError(std::move(Err)); |
| 1071 | } |
| 1072 | break; |
| 1073 | } |
| 1074 | case MRICommand::AddMod: |
| 1075 | addMember(NewMembers, Rest); |
| 1076 | break; |
| 1077 | case MRICommand::CreateThin: |
| 1078 | Thin = true; |
| 1079 | LLVM_FALLTHROUGH; |
| 1080 | case MRICommand::Create: |
| 1081 | Create = true; |
| 1082 | if (!ArchiveName.empty()) |
| 1083 | fail("editing multiple archives not supported"); |
| 1084 | if (Saved) |
| 1085 | fail("file already saved"); |
| 1086 | ArchiveName = std::string(Rest); |
| 1087 | break; |
| 1088 | case MRICommand::Delete: { |
| 1089 | llvm::erase_if(NewMembers, [=](NewArchiveMember &M) { |
| 1090 | return comparePaths(M.MemberName, Rest); |
| 1091 | }); |
| 1092 | break; |
| 1093 | } |
| 1094 | case MRICommand::Save: |
| 1095 | Saved = true; |
| 1096 | break; |
| 1097 | case MRICommand::End: |
| 1098 | break; |
| 1099 | case MRICommand::Invalid: |
| 1100 | fail("unknown command: " + CommandStr); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | ParsingMRIScript = false; |
| 1105 | |
| 1106 | // Nothing to do if not saved. |
| 1107 | if (Saved) |
| 1108 | performOperation(ReplaceOrInsert, &NewMembers); |
| 1109 | exit(0); |
| 1110 | } |
| 1111 | |
| 1112 | static bool handleGenericOption(StringRef arg) { |
| 1113 | if (arg == "-help" || arg == "--help" || arg == "-h") { |
| 1114 | printHelpMessage(); |
| 1115 | return true; |
| 1116 | } |
| 1117 | if (arg == "-version" || arg == "--version") { |
| 1118 | cl::PrintVersionMessage(); |
| 1119 | return true; |
| 1120 | } |
| 1121 | return false; |
| 1122 | } |
| 1123 | |
| 1124 | static const char *matchFlagWithArg(StringRef Expected, |
| 1125 | ArrayRef<const char *>::iterator &ArgIt, |
| 1126 | ArrayRef<const char *> Args) { |
| 1127 | StringRef Arg = *ArgIt; |
| 1128 | |
| 1129 | if (Arg.startswith("--")) |
| 1130 | Arg = Arg.substr(2); |
| 1131 | else if (Arg.startswith("-")) |
| 1132 | Arg = Arg.substr(1); |
| 1133 | |
| 1134 | size_t len = Expected.size(); |
| 1135 | if (Arg == Expected) { |
| 1136 | if (++ArgIt == Args.end()) |
| 1137 | fail(std::string(Expected) + " requires an argument"); |
| 1138 | |
| 1139 | return *ArgIt; |
| 1140 | } |
| 1141 | if (Arg.startswith(Expected) && Arg.size() > len && Arg[len] == '=') |
| 1142 | return Arg.data() + len + 1; |
| 1143 | |
| 1144 | return nullptr; |
| 1145 | } |
| 1146 | |
| 1147 | static cl::TokenizerCallback getRspQuoting(ArrayRef<const char *> ArgsArr) { |
| 1148 | cl::TokenizerCallback Ret = |
| 1149 | Triple(sys::getProcessTriple()).getOS() == Triple::Win32 |
| 1150 | ? cl::TokenizeWindowsCommandLine |
| 1151 | : cl::TokenizeGNUCommandLine; |
| 1152 | |
| 1153 | for (ArrayRef<const char *>::iterator ArgIt = ArgsArr.begin(); |
| 1154 | ArgIt != ArgsArr.end(); ++ArgIt) { |
| 1155 | if (const char *Match = matchFlagWithArg("rsp-quoting", ArgIt, ArgsArr)) { |
| 1156 | StringRef MatchRef = Match; |
| 1157 | if (MatchRef == "posix") |
| 1158 | Ret = cl::TokenizeGNUCommandLine; |
| 1159 | else if (MatchRef == "windows") |
| 1160 | Ret = cl::TokenizeWindowsCommandLine; |
| 1161 | else |
| 1162 | fail(std::string("Invalid response file quoting style ") + Match); |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | return Ret; |
| 1167 | } |
| 1168 | |
| 1169 | static int ar_main(int argc, char **argv) { |
| 1170 | SmallVector<const char *, 0> Argv(argv + 1, argv + argc); |
| 1171 | StringSaver Saver(Alloc); |
| 1172 | |
| 1173 | cl::ExpandResponseFiles(Saver, getRspQuoting(makeArrayRef(argv, argc)), Argv); |
| 1174 | |
| 1175 | for (ArrayRef<const char *>::iterator ArgIt = Argv.begin(); |
| 1176 | ArgIt != Argv.end(); ++ArgIt) { |
| 1177 | const char *Match = nullptr; |
| 1178 | |
| 1179 | if (handleGenericOption(*ArgIt)) |
| 1180 | return 0; |
| 1181 | if (strcmp(*ArgIt, "--") == 0) { |
| 1182 | ++ArgIt; |
| 1183 | for (; ArgIt != Argv.end(); ++ArgIt) |
| 1184 | PositionalArgs.push_back(*ArgIt); |
| 1185 | break; |
| 1186 | } |
| 1187 | |
| 1188 | if (*ArgIt[0] != '-') { |
| 1189 | if (Options.empty()) |
| 1190 | Options += *ArgIt; |
| 1191 | else |
| 1192 | PositionalArgs.push_back(*ArgIt); |
| 1193 | continue; |
| 1194 | } |
| 1195 | |
| 1196 | if (strcmp(*ArgIt, "-M") == 0) { |
| 1197 | MRI = true; |
| 1198 | continue; |
| 1199 | } |
| 1200 | |
| 1201 | Match = matchFlagWithArg("format", ArgIt, Argv); |
| 1202 | if (Match) { |
| 1203 | FormatType = StringSwitch<Format>(Match) |
| 1204 | .Case("default", Default) |
| 1205 | .Case("gnu", GNU) |
| 1206 | .Case("darwin", DARWIN) |
| 1207 | .Case("bsd", BSD) |
| 1208 | .Default(Unknown); |
| 1209 | if (FormatType == Unknown) |
| 1210 | fail(std::string("Invalid format ") + Match); |
| 1211 | continue; |
| 1212 | } |
| 1213 | |
| 1214 | if (matchFlagWithArg("plugin", ArgIt, Argv) || |
| 1215 | matchFlagWithArg("rsp-quoting", ArgIt, Argv)) |
| 1216 | continue; |
| 1217 | |
| 1218 | Options += *ArgIt + 1; |
| 1219 | } |
| 1220 | |
| 1221 | ArchiveOperation Operation = parseCommandLine(); |
| 1222 | return performOperation(Operation, nullptr); |
| 1223 | } |
| 1224 | |
| 1225 | static int ranlib_main(int argc, char **argv) { |
| 1226 | bool ArchiveSpecified = false; |
| 1227 | for (int i = 1; i < argc; ++i) { |
| 1228 | StringRef arg(argv[i]); |
| 1229 | if (handleGenericOption(arg)) { |
| 1230 | return 0; |
| 1231 | } else if (arg.consume_front("-")) { |
| 1232 | // Handle the -D/-U flag |
| 1233 | while (!arg.empty()) { |
| 1234 | if (arg.front() == 'D') { |
| 1235 | Deterministic = true; |
| 1236 | } else if (arg.front() == 'U') { |
| 1237 | Deterministic = false; |
| 1238 | } else if (arg.front() == 'h') { |
| 1239 | printHelpMessage(); |
| 1240 | return 0; |
| 1241 | } else if (arg.front() == 'v') { |
| 1242 | cl::PrintVersionMessage(); |
| 1243 | return 0; |
| 1244 | } else { |
| 1245 | // TODO: GNU ranlib also supports a -t flag |
| 1246 | fail("Invalid option: '-" + arg + "'"); |
| 1247 | } |
| 1248 | arg = arg.drop_front(1); |
| 1249 | } |
| 1250 | } else { |
| 1251 | if (ArchiveSpecified) |
| 1252 | fail("exactly one archive should be specified"); |
| 1253 | ArchiveSpecified = true; |
| 1254 | ArchiveName = arg.str(); |
| 1255 | } |
| 1256 | } |
| 1257 | if (!ArchiveSpecified) { |
| 1258 | badUsage("an archive name must be specified"); |
| 1259 | } |
| 1260 | return performOperation(CreateSymTab, nullptr); |
| 1261 | } |
| 1262 | |
| 1263 | int main(int argc, char **argv) { |
| 1264 | InitLLVM X(argc, argv); |
| 1265 | ToolName = argv[0]; |
| 1266 | |
| 1267 | llvm::InitializeAllTargetInfos(); |
| 1268 | llvm::InitializeAllTargetMCs(); |
| 1269 | llvm::InitializeAllAsmParsers(); |
| 1270 | |
| 1271 | Stem = sys::path::stem(ToolName); |
| 1272 | auto Is = [](StringRef Tool) { |
| 1273 | // We need to recognize the following filenames. |
| 1274 | // |
| 1275 | // Lib.exe -> lib (see D44808, MSBuild runs Lib.exe) |
| 1276 | // dlltool.exe -> dlltool |
| 1277 | // arm-pokymllib32-linux-gnueabi-llvm-ar-10 -> ar |
| 1278 | auto I = Stem.rfind_lower(Tool); |
| 1279 | return I != StringRef::npos && |
| 1280 | (I + Tool.size() == Stem.size() || !isAlnum(Stem[I + Tool.size()])); |
| 1281 | }; |
| 1282 | |
| 1283 | if (Is("dlltool")) |
| 1284 | return dlltoolDriverMain(makeArrayRef(argv, argc)); |
| 1285 | if (Is("ranlib")) |
| 1286 | return ranlib_main(argc, argv); |
| 1287 | if (Is("lib")) |
| 1288 | return libDriverMain(makeArrayRef(argv, argc)); |
| 1289 | if (Is("ar")) |
| 1290 | return ar_main(argc, argv); |
| 1291 | |
| 1292 | fail("not ranlib, ar, lib or dlltool"); |
| 1293 | } |
Andrew Kelley <andrew@ziglang.org> 2021-05-28 20:12:28-07:00