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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/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Bitcode/Archive.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
-#include <iostream>
-#include <algorithm>
-#include <iomanip>
-#include <memory>
-#include <fstream>
-using namespace llvm;
-
-// Option for compatibility with AIX, not used but must allow it to be present.
-static cl::opt<bool>
-X32Option ("X32_64", cl::Hidden,
- cl::desc("Ignored option for compatibility with AIX"));
-
-// llvm-ar operation code and modifier flags. This must come first.
-static cl::opt<std::string>
-Options(cl::Positional, cl::Required, cl::desc("{operation}[modifiers]..."));
-
-// llvm-ar remaining positional arguments.
-static cl::list<std::string>
-RestOfArgs(cl::Positional, cl::OneOrMore,
- cl::desc("[relpos] [count] <archive-file> [members]..."));
-
-// MoreHelp - Provide additional help output explaining the operations and
-// modifiers of llvm-ar. This object instructs the CommandLine library
-// to print the text of the constructor when the --help option is given.
-static cl::extrahelp MoreHelp(
- "\nOPERATIONS:\n"
- " d[NsS] - delete file(s) from the archive\n"
- " m[abiSs] - move file(s) in the archive\n"
- " p[kN] - print file(s) found in the archive\n"
- " q[ufsS] - quick append file(s) to the archive\n"
- " r[abfiuzRsS] - replace or insert file(s) into the archive\n"
- " t - display contents of archive\n"
- " x[No] - extract file(s) from the archive\n"
- "\nMODIFIERS (operation specific):\n"
- " [a] - put file(s) after [relpos]\n"
- " [b] - put file(s) before [relpos] (same as [i])\n"
- " [f] - truncate inserted file names\n"
- " [i] - put file(s) before [relpos] (same as [b])\n"
- " [k] - always print bitcode files (default is to skip them)\n"
- " [N] - use instance [count] of name\n"
- " [o] - preserve original dates\n"
- " [P] - use full path names when matching\n"
- " [R] - recurse through directories when inserting\n"
- " [s] - create an archive index (cf. ranlib)\n"
- " [S] - do not build a symbol table\n"
- " [u] - update only files newer than archive contents\n"
- " [z] - compress files before inserting/extracting\n"
- "\nMODIFIERS (generic):\n"
- " [c] - do not warn if the library had to be created\n"
- " [v] - be verbose about actions taken\n"
- " [V] - be *really* verbose about actions taken\n"
-);
-
-// This enumeration delineates the kinds of operations on an archive
-// that are permitted.
-enum ArchiveOperation {
- NoOperation, ///< An operation hasn't been specified
- 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
-};
-
-// Modifiers to follow operation to vary behavior
-bool AddAfter = false; ///< 'a' modifier
-bool AddBefore = false; ///< 'b' modifier
-bool Create = false; ///< 'c' modifier
-bool TruncateNames = false; ///< 'f' modifier
-bool InsertBefore = false; ///< 'i' modifier
-bool DontSkipBitcode = false; ///< 'k' modifier
-bool UseCount = false; ///< 'N' modifier
-bool OriginalDates = false; ///< 'o' modifier
-bool FullPath = false; ///< 'P' modifier
-bool RecurseDirectories = false; ///< 'R' modifier
-bool SymTable = true; ///< 's' & 'S' modifiers
-bool OnlyUpdate = false; ///< 'u' modifier
-bool Verbose = false; ///< 'v' modifier
-bool ReallyVerbose = false; ///< 'V' modifier
-bool Compression = false; ///< 'z' 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.
-std::string RelPos;
-
-// Select which of multiple entries in the archive with the same name should be
-// used (specified with -N) for the delete and extract operations.
-int Count = 1;
-
-// This variable holds the name of the archive file as given on the
-// command line.
-std::string ArchiveName;
-
-// This variable holds the list of member files to proecess, as given
-// on the command line.
-std::vector<std::string> Members;
-
-// This variable holds the (possibly expanded) list of path objects that
-// correspond to files we will
-std::set<sys::Path> Paths;
-
-// The Archive object to which all the editing operations will be sent.
-Archive* TheArchive = 0;
-
-// getRelPos - Extract the member filename from the command line for
-// the [relpos] argument associated with a, b, and i modifiers
-void getRelPos() {
- if(RestOfArgs.size() > 0) {
- RelPos = RestOfArgs[0];
- RestOfArgs.erase(RestOfArgs.begin());
- }
- else
- throw "Expected [relpos] for a, b, or i modifier";
-}
-
-// getCount - Extract the [count] argument associated with the N modifier
-// from the command line and check its value.
-void getCount() {
- if(RestOfArgs.size() > 0) {
- Count = atoi(RestOfArgs[0].c_str());
- RestOfArgs.erase(RestOfArgs.begin());
- }
- else
- throw "Expected [count] value with N modifier";
-
- // Non-positive counts are not allowed
- if (Count < 1)
- throw "Invalid [count] value (not a positive integer)";
-}
-
-// getArchive - Get the archive file name from the command line
-void getArchive() {
- if(RestOfArgs.size() > 0) {
- ArchiveName = RestOfArgs[0];
- RestOfArgs.erase(RestOfArgs.begin());
- }
- else
- throw "An archive name must be specified.";
-}
-
-// getMembers - Copy over remaining items in RestOfArgs to our Members vector
-// This is just for clarity.
-void getMembers() {
- if(RestOfArgs.size() > 0)
- Members = std::vector<std::string>(RestOfArgs);
-}
-
-// parseCommandLine - 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.
-ArchiveOperation parseCommandLine() {
-
- // 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 = NoOperation;
-
- 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 'f': TruncateNames = true; break;
- case 'k': DontSkipBitcode = true; break;
- case 'l': /* accepted but unused */ break;
- case 'o': OriginalDates = true; break;
- case 'P': FullPath = true; break;
- case 'R': RecurseDirectories = true; break;
- case 's': SymTable = true; break;
- case 'S': SymTable = false; break;
- case 'u': OnlyUpdate = true; break;
- case 'v': Verbose = true; break;
- case 'V': Verbose = ReallyVerbose = true; break;
- case 'z': Compression = true; break;
- case 'a':
- getRelPos();
- AddAfter = true;
- NumPositional++;
- break;
- case 'b':
- getRelPos();
- AddBefore = true;
- NumPositional++;
- break;
- case 'i':
- getRelPos();
- InsertBefore = true;
- NumPositional++;
- break;
- case 'N':
- getCount();
- UseCount = true;
- break;
- default:
- cl::PrintHelpMessage();
- }
- }
-
- // 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();
-
- // Perform various checks on the operation/modifier specification
- // to make sure we are dealing with a legal request.
- if (NumOperations == 0)
- throw "You must specify at least one of the operations";
- if (NumOperations > 1)
- throw "Only one operation may be specified";
- if (NumPositional > 1)
- throw "You may only specify one of a, b, and i modifiers";
- if (AddAfter || AddBefore || InsertBefore)
- if (Operation != Move && Operation != ReplaceOrInsert)
- throw "The 'a', 'b' and 'i' modifiers can only be specified with "
- "the 'm' or 'r' operations";
- if (RecurseDirectories && Operation != ReplaceOrInsert)
- throw "The 'R' modifiers is only applicabe to the 'r' operation";
- if (OriginalDates && Operation != Extract)
- throw "The 'o' modifier is only applicable to the 'x' operation";
- if (TruncateNames && Operation!=QuickAppend && Operation!=ReplaceOrInsert)
- throw "The 'f' modifier is only applicable to the 'q' and 'r' operations";
- if (OnlyUpdate && Operation != ReplaceOrInsert)
- throw "The 'u' modifier is only applicable to the 'r' operation";
- if (Compression && Operation!=ReplaceOrInsert && Operation!=Extract)
- throw "The 'z' modifier is only applicable to the 'r' and 'x' operations";
- if (Count > 1 && Members.size() > 1)
- throw "Only one member name may be specified with the 'N' modifier";
-
- // Return the parsed operation to the caller
- return Operation;
-}
-
-// recurseDirectories - Implements the "R" modifier. This function scans through
-// the Paths vector (built by buildPaths, below) and replaces any directories it
-// finds with all the files in that directory (recursively). It uses the
-// sys::Path::getDirectoryContent method to perform the actual directory scans.
-bool
-recurseDirectories(const sys::Path& path,
- std::set<sys::Path>& result, std::string* ErrMsg) {
- result.clear();
- if (RecurseDirectories) {
- std::set<sys::Path> content;
- if (path.getDirectoryContents(content, ErrMsg))
- return true;
-
- for (std::set<sys::Path>::iterator I = content.begin(), E = content.end();
- I != E; ++I) {
- // Make sure it exists and is a directory
- sys::PathWithStatus PwS(*I);
- const sys::FileStatus *Status = PwS.getFileStatus(false, ErrMsg);
- if (!Status)
- return true;
- if (Status->isDir) {
- std::set<sys::Path> moreResults;
- if (recurseDirectories(*I, moreResults, ErrMsg))
- return true;
- result.insert(moreResults.begin(), moreResults.end());
- } else {
- result.insert(*I);
- }
- }
- }
- return false;
-}
-
-// buildPaths - Convert the strings in the Members vector to sys::Path objects
-// and make sure they are valid and exist exist. This check is only needed for
-// the operations that add/replace files to the archive ('q' and 'r')
-bool buildPaths(bool checkExistence, std::string* ErrMsg) {
- for (unsigned i = 0; i < Members.size(); i++) {
- sys::Path aPath;
- if (!aPath.set(Members[i]))
- throw std::string("File member name invalid: ") + Members[i];
- if (checkExistence) {
- if (!aPath.exists())
- throw std::string("File does not exist: ") + Members[i];
- std::string Err;
- sys::PathWithStatus PwS(aPath);
- const sys::FileStatus *si = PwS.getFileStatus(false, &Err);
- if (!si)
- throw Err;
- if (si->isDir) {
- std::set<sys::Path> dirpaths;
- if (recurseDirectories(aPath, dirpaths, ErrMsg))
- return true;
- Paths.insert(dirpaths.begin(),dirpaths.end());
- } else {
- Paths.insert(aPath);
- }
- } else {
- Paths.insert(aPath);
- }
- }
- return false;
-}
-
-// printSymbolTable - print out the archive's symbol table.
-void printSymbolTable() {
- std::cout << "\nArchive Symbol Table:\n";
- const Archive::SymTabType& symtab = TheArchive->getSymbolTable();
- for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end();
- I != E; ++I ) {
- unsigned offset = TheArchive->getFirstFileOffset() + I->second;
- std::cout << " " << std::setw(9) << offset << "\t" << I->first <<"\n";
- }
-}
-
-// doPrint - Implements the 'p' operation. This function traverses the archive
-// looking for members that match the path list. It is careful to uncompress
-// things that should be and to skip bitcode files unless the 'k' modifier was
-// given.
-bool doPrint(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- unsigned countDown = Count;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
- if (countDown == 1) {
- const char* data = reinterpret_cast<const char*>(I->getData());
-
- // Skip things that don't make sense to print
- if (I->isLLVMSymbolTable() || I->isSVR4SymbolTable() ||
- I->isBSD4SymbolTable() || (!DontSkipBitcode && I->isBitcode()))
- continue;
-
- if (Verbose)
- std::cout << "Printing " << I->getPath().str() << "\n";
-
- unsigned len = I->getSize();
- std::cout.write(data, len);
- } else {
- countDown--;
- }
- }
- }
- return false;
-}
-
-// putMode - utility function for printing out the file mode when the 't'
-// operation is in verbose mode.
-void
-printMode(unsigned mode) {
- if (mode & 004)
- std::cout << "r";
- else
- std::cout << "-";
- if (mode & 002)
- std::cout << "w";
- else
- std::cout << "-";
- if (mode & 001)
- std::cout << "x";
- else
- std::cout << "-";
-}
-
-// doDisplayTable - 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.
-bool
-doDisplayTable(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
- if (Verbose) {
- // FIXME: Output should be this format:
- // Zrw-r--r-- 500/ 500 525 Nov 8 17:42 2004 Makefile
- if (I->isBitcode())
- std::cout << "b";
- else if (I->isCompressed())
- std::cout << "Z";
- else
- std::cout << " ";
- unsigned mode = I->getMode();
- printMode((mode >> 6) & 007);
- printMode((mode >> 3) & 007);
- printMode(mode & 007);
- std::cout << " " << std::setw(4) << I->getUser();
- std::cout << "/" << std::setw(4) << I->getGroup();
- std::cout << " " << std::setw(8) << I->getSize();
- std::cout << " " << std::setw(20) << I->getModTime().str().substr(4);
- std::cout << " " << I->getPath().str() << "\n";
- } else {
- std::cout << I->getPath().str() << "\n";
- }
- }
- }
- if (ReallyVerbose)
- printSymbolTable();
- return false;
-}
-
-// doExtract - Implement the 'x' operation. This function extracts files back to
-// the file system, making sure to uncompress any that were compressed
-bool
-doExtract(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
-
- // Make sure the intervening directories are created
- if (I->hasPath()) {
- sys::Path dirs(I->getPath());
- dirs.eraseComponent();
- if (dirs.createDirectoryOnDisk(/*create_parents=*/true, ErrMsg))
- return true;
- }
-
- // Open up a file stream for writing
- std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
- std::ios::binary;
- std::ofstream file(I->getPath().c_str(), io_mode);
-
- // Get the data and its length
- const char* data = reinterpret_cast<const char*>(I->getData());
- unsigned len = I->getSize();
-
- // Write the data.
- file.write(data,len);
- file.close();
-
- // If we're supposed to retain the original modification times, etc. do so
- // now.
- if (OriginalDates)
- I->getPath().setStatusInfoOnDisk(I->getFileStatus());
- }
- }
- return false;
-}
-
-// doDelete - Implement the delete operation. This function deletes zero or more
-// members from the archive. Note that if the count is specified, there should
-// be no more than one path in the Paths list or else this algorithm breaks.
-// That check is enforced in parseCommandLine (above).
-bool
-doDelete(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- if (Paths.empty())
- return false;
- unsigned countDown = Count;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ) {
- if (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end()) {
- if (countDown == 1) {
- Archive::iterator J = I;
- ++I;
- TheArchive->erase(J);
- } else
- countDown--;
- } else {
- ++I;
- }
- }
-
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(SymTable,TruncateNames,Compression,ErrMsg))
- return true;
- if (ReallyVerbose)
- printSymbolTable();
- return false;
-}
-
-// doMore - Implement the move operation. This function re-arranges just the
-// order of the archive members so that when the archive is written the move
-// of the members is accomplished. Note the use of the RelPos variable to
-// determine where the items should be moved to.
-bool
-doMove(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
-
- // By default and convention the place to move members to is the end of the
- // archive.
- Archive::iterator moveto_spot = TheArchive->end();
-
- // However, if the relative positioning modifiers were used, we need to scan
- // the archive to find the member in question. If we don't find it, its no
- // crime, we just move to the end.
- if (AddBefore || InsertBefore || AddAfter) {
- for (Archive::iterator I = TheArchive->begin(), E= TheArchive->end();
- I != E; ++I ) {
- if (RelPos == I->getPath().str()) {
- if (AddAfter) {
- moveto_spot = I;
- moveto_spot++;
- } else {
- moveto_spot = I;
- }
- break;
- }
- }
- }
-
- // Keep a list of the paths remaining to be moved
- std::set<sys::Path> remaining(Paths);
-
- // Scan the archive again, this time looking for the members to move to the
- // moveto_spot.
- for (Archive::iterator I = TheArchive->begin(), E= TheArchive->end();
- I != E && !remaining.empty(); ++I ) {
- std::set<sys::Path>::iterator found =
- std::find(remaining.begin(),remaining.end(),I->getPath());
- if (found != remaining.end()) {
- if (I != moveto_spot)
- TheArchive->splice(moveto_spot,*TheArchive,I);
- remaining.erase(found);
- }
- }
-
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(SymTable,TruncateNames,Compression,ErrMsg))
- return true;
- if (ReallyVerbose)
- printSymbolTable();
- return false;
-}
-
-// doQuickAppend - Implements the 'q' operation. This function just
-// indiscriminantly adds the members to the archive and rebuilds it.
-bool
-doQuickAppend(std::string* ErrMsg) {
- // Get the list of paths to append.
- if (buildPaths(true, ErrMsg))
- return true;
- if (Paths.empty())
- return false;
-
- // Append them quickly.
- for (std::set<sys::Path>::iterator PI = Paths.begin(), PE = Paths.end();
- PI != PE; ++PI) {
- if (TheArchive->addFileBefore(*PI,TheArchive->end(),ErrMsg))
- return true;
- }
-
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(SymTable,TruncateNames,Compression,ErrMsg))
- return true;
- if (ReallyVerbose)
- printSymbolTable();
- return false;
-}
-
-// doReplaceOrInsert - Implements the 'r' operation. This function will replace
-// any existing files or insert new ones into the archive.
-bool
-doReplaceOrInsert(std::string* ErrMsg) {
-
- // Build the list of files to be added/replaced.
- if (buildPaths(true, ErrMsg))
- return true;
- if (Paths.empty())
- return false;
-
- // Keep track of the paths that remain to be inserted.
- std::set<sys::Path> remaining(Paths);
-
- // Default the insertion spot to the end of the archive
- Archive::iterator insert_spot = TheArchive->end();
-
- // Iterate over the archive contents
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E && !remaining.empty(); ++I ) {
-
- // Determine if this archive member matches one of the paths we're trying
- // to replace.
-
- std::set<sys::Path>::iterator found = remaining.end();
- for (std::set<sys::Path>::iterator RI = remaining.begin(),
- RE = remaining.end(); RI != RE; ++RI ) {
- std::string compare(RI->str());
- if (TruncateNames && compare.length() > 15) {
- const char* nm = compare.c_str();
- unsigned len = compare.length();
- size_t slashpos = compare.rfind('/');
- if (slashpos != std::string::npos) {
- nm += slashpos + 1;
- len -= slashpos +1;
- }
- if (len > 15)
- len = 15;
- compare.assign(nm,len);
- }
- if (compare == I->getPath().str()) {
- found = RI;
- break;
- }
- }
-
- if (found != remaining.end()) {
- std::string Err;
- sys::PathWithStatus PwS(*found);
- const sys::FileStatus *si = PwS.getFileStatus(false, &Err);
- if (!si)
- return true;
- if (!si->isDir) {
- if (OnlyUpdate) {
- // Replace the item only if it is newer.
- if (si->modTime > I->getModTime())
- if (I->replaceWith(*found, ErrMsg))
- return true;
- } else {
- // Replace the item regardless of time stamp
- if (I->replaceWith(*found, ErrMsg))
- return true;
- }
- } else {
- // We purposefully ignore directories.
- }
-
- // Remove it from our "to do" list
- remaining.erase(found);
- }
-
- // Determine if this is the place where we should insert
- if ((AddBefore || InsertBefore) && RelPos == I->getPath().str())
- insert_spot = I;
- else if (AddAfter && RelPos == I->getPath().str()) {
- insert_spot = I;
- insert_spot++;
- }
- }
-
- // If we didn't replace all the members, some will remain and need to be
- // inserted at the previously computed insert-spot.
- if (!remaining.empty()) {
- for (std::set<sys::Path>::iterator PI = remaining.begin(),
- PE = remaining.end(); PI != PE; ++PI) {
- if (TheArchive->addFileBefore(*PI,insert_spot, ErrMsg))
- return true;
- }
- }
-
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(SymTable,TruncateNames,Compression,ErrMsg))
- return true;
- if (ReallyVerbose)
- printSymbolTable();
- return false;
-}
-
-// main - main program for llvm-ar .. see comments in the code
-int main(int argc, char **argv) {
- // Print a stack trace if we signal out.
- sys::PrintStackTraceOnErrorSignal();
- PrettyStackTraceProgram X(argc, argv);
- LLVMContext &Context = getGlobalContext();
- llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
-
- // Have the command line options parsed and handle things
- // like --help and --version.
- cl::ParseCommandLineOptions(argc, argv,
- "LLVM Archiver (llvm-ar)\n\n"
- " This program archives bitcode files into single libraries\n"
- );
-
- int exitCode = 0;
-
- // Make sure we don't exit with "unhandled exception".
- try {
- // Do our own parsing of the command line because the CommandLine utility
- // can't handle the grouped positional parameters without a dash.
- ArchiveOperation Operation = parseCommandLine();
-
- // Check the path name of the archive
- sys::Path ArchivePath;
- if (!ArchivePath.set(ArchiveName))
- throw std::string("Archive name invalid: ") + ArchiveName;
-
- // Create or open the archive object.
- if (!ArchivePath.exists()) {
- // Produce a warning if we should and we're creating the archive
- if (!Create)
- errs() << argv[0] << ": creating " << ArchivePath.str() << "\n";
- TheArchive = Archive::CreateEmpty(ArchivePath, Context);
- TheArchive->writeToDisk();
- } else {
- std::string Error;
- TheArchive = Archive::OpenAndLoad(ArchivePath, Context, &Error);
- if (TheArchive == 0) {
- errs() << argv[0] << ": error loading '" << ArchivePath.str() << "': "
- << Error << "!\n";
- return 1;
- }
- }
-
- // Make sure we're not fooling ourselves.
- assert(TheArchive && "Unable to instantiate the archive");
-
- // Make sure we clean up the archive even on failure.
- std::auto_ptr<Archive> AutoArchive(TheArchive);
-
- // Perform the operation
- std::string ErrMsg;
- bool haveError = false;
- switch (Operation) {
- case Print: haveError = doPrint(&ErrMsg); break;
- case Delete: haveError = doDelete(&ErrMsg); break;
- case Move: haveError = doMove(&ErrMsg); break;
- case QuickAppend: haveError = doQuickAppend(&ErrMsg); break;
- case ReplaceOrInsert: haveError = doReplaceOrInsert(&ErrMsg); break;
- case DisplayTable: haveError = doDisplayTable(&ErrMsg); break;
- case Extract: haveError = doExtract(&ErrMsg); break;
- case NoOperation:
- errs() << argv[0] << ": No operation was selected.\n";
- break;
- }
- if (haveError) {
- errs() << argv[0] << ": " << ErrMsg << "\n";
- return 1;
- }
- } catch (const char*msg) {
- // These errors are usage errors, thrown only by the various checks in the
- // code above.
- errs() << argv[0] << ": " << msg << "\n\n";
- cl::PrintHelpMessage();
- exitCode = 1;
- } catch (const std::string& msg) {
- // These errors are thrown by LLVM libraries (e.g. lib System) and represent
- // a more serious error so we bump the exitCode and don't print the usage.
- errs() << argv[0] << ": " << msg << "\n";
- exitCode = 2;
- } catch (...) {
- // This really shouldn't happen, but just in case ....
- errs() << argv[0] << ": An unexpected unknown exception occurred.\n";
- exitCode = 3;
- }
-
- // Return result code back to operating system.
- return exitCode;
-}
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