mirror of
https://github.com/c64scene-ar/llvm-6502.git
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83a113b77c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123152 91177308-0d34-0410-b5e6-96231b3b80d8
782 lines
27 KiB
C++
782 lines
27 KiB
C++
//===-- llvm-ar.cpp - LLVM archive librarian utility ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Builds up (relatively) standard unix archive files (.a) containing LLVM
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// bitcode or other files.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/LLVMContext.h"
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#include "llvm/Module.h"
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#include "llvm/Bitcode/Archive.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/Signals.h"
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#include <algorithm>
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#include <memory>
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#include <fstream>
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using namespace llvm;
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// Option for compatibility with AIX, not used but must allow it to be present.
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static cl::opt<bool>
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X32Option ("X32_64", cl::Hidden,
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cl::desc("Ignored option for compatibility with AIX"));
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// llvm-ar operation code and modifier flags. This must come first.
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static cl::opt<std::string>
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Options(cl::Positional, cl::Required, cl::desc("{operation}[modifiers]..."));
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// llvm-ar remaining positional arguments.
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static cl::list<std::string>
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RestOfArgs(cl::Positional, cl::OneOrMore,
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cl::desc("[relpos] [count] <archive-file> [members]..."));
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// MoreHelp - Provide additional help output explaining the operations and
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// modifiers of llvm-ar. This object instructs the CommandLine library
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// to print the text of the constructor when the --help option is given.
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static cl::extrahelp MoreHelp(
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"\nOPERATIONS:\n"
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" d[NsS] - delete file(s) from the archive\n"
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" m[abiSs] - move file(s) in the archive\n"
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" p[kN] - print file(s) found in the archive\n"
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" q[ufsS] - quick append file(s) to the archive\n"
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" r[abfiuzRsS] - replace or insert file(s) into the archive\n"
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" t - display contents of archive\n"
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" x[No] - extract file(s) from the archive\n"
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"\nMODIFIERS (operation specific):\n"
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" [a] - put file(s) after [relpos]\n"
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" [b] - put file(s) before [relpos] (same as [i])\n"
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" [f] - truncate inserted file names\n"
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" [i] - put file(s) before [relpos] (same as [b])\n"
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" [k] - always print bitcode files (default is to skip them)\n"
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" [N] - use instance [count] of name\n"
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" [o] - preserve original dates\n"
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" [P] - use full path names when matching\n"
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" [R] - recurse through directories when inserting\n"
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" [s] - create an archive index (cf. ranlib)\n"
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" [S] - do not build a symbol table\n"
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" [u] - update only files newer than archive contents\n"
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" [z] - compress files before inserting/extracting\n"
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"\nMODIFIERS (generic):\n"
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" [c] - do not warn if the library had to be created\n"
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" [v] - be verbose about actions taken\n"
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" [V] - be *really* verbose about actions taken\n"
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);
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// This enumeration delineates the kinds of operations on an archive
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// that are permitted.
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enum ArchiveOperation {
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NoOperation, ///< An operation hasn't been specified
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Print, ///< Print the contents of the archive
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Delete, ///< Delete the specified members
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Move, ///< Move members to end or as given by {a,b,i} modifiers
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QuickAppend, ///< Quickly append to end of archive
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ReplaceOrInsert, ///< Replace or Insert members
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DisplayTable, ///< Display the table of contents
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Extract ///< Extract files back to file system
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};
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// Modifiers to follow operation to vary behavior
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bool AddAfter = false; ///< 'a' modifier
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bool AddBefore = false; ///< 'b' modifier
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bool Create = false; ///< 'c' modifier
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bool TruncateNames = false; ///< 'f' modifier
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bool InsertBefore = false; ///< 'i' modifier
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bool DontSkipBitcode = false; ///< 'k' modifier
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bool UseCount = false; ///< 'N' modifier
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bool OriginalDates = false; ///< 'o' modifier
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bool FullPath = false; ///< 'P' modifier
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bool RecurseDirectories = false; ///< 'R' modifier
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bool SymTable = true; ///< 's' & 'S' modifiers
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bool OnlyUpdate = false; ///< 'u' modifier
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bool Verbose = false; ///< 'v' modifier
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bool ReallyVerbose = false; ///< 'V' modifier
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bool Compression = false; ///< 'z' modifier
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// Relative Positional Argument (for insert/move). This variable holds
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// the name of the archive member to which the 'a', 'b' or 'i' modifier
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// refers. Only one of 'a', 'b' or 'i' can be specified so we only need
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// one variable.
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std::string RelPos;
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// Select which of multiple entries in the archive with the same name should be
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// used (specified with -N) for the delete and extract operations.
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int Count = 1;
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// This variable holds the name of the archive file as given on the
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// command line.
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std::string ArchiveName;
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// This variable holds the list of member files to proecess, as given
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// on the command line.
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std::vector<std::string> Members;
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// This variable holds the (possibly expanded) list of path objects that
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// correspond to files we will
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std::set<sys::Path> Paths;
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// The Archive object to which all the editing operations will be sent.
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Archive* TheArchive = 0;
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// getRelPos - Extract the member filename from the command line for
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// the [relpos] argument associated with a, b, and i modifiers
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void getRelPos() {
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if(RestOfArgs.size() > 0) {
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RelPos = RestOfArgs[0];
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RestOfArgs.erase(RestOfArgs.begin());
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}
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else
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throw "Expected [relpos] for a, b, or i modifier";
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}
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// getCount - Extract the [count] argument associated with the N modifier
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// from the command line and check its value.
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void getCount() {
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if(RestOfArgs.size() > 0) {
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Count = atoi(RestOfArgs[0].c_str());
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RestOfArgs.erase(RestOfArgs.begin());
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}
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else
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throw "Expected [count] value with N modifier";
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// Non-positive counts are not allowed
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if (Count < 1)
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throw "Invalid [count] value (not a positive integer)";
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}
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// getArchive - Get the archive file name from the command line
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void getArchive() {
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if(RestOfArgs.size() > 0) {
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ArchiveName = RestOfArgs[0];
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RestOfArgs.erase(RestOfArgs.begin());
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}
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else
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throw "An archive name must be specified.";
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}
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// getMembers - Copy over remaining items in RestOfArgs to our Members vector
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// This is just for clarity.
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void getMembers() {
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if(RestOfArgs.size() > 0)
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Members = std::vector<std::string>(RestOfArgs);
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}
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// parseCommandLine - Parse the command line options as presented and return the
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// operation specified. Process all modifiers and check to make sure that
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// constraints on modifier/operation pairs have not been violated.
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ArchiveOperation parseCommandLine() {
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// Keep track of number of operations. We can only specify one
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// per execution.
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unsigned NumOperations = 0;
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// Keep track of the number of positional modifiers (a,b,i). Only
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// one can be specified.
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unsigned NumPositional = 0;
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// Keep track of which operation was requested
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ArchiveOperation Operation = NoOperation;
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for(unsigned i=0; i<Options.size(); ++i) {
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switch(Options[i]) {
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case 'd': ++NumOperations; Operation = Delete; break;
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case 'm': ++NumOperations; Operation = Move ; break;
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case 'p': ++NumOperations; Operation = Print; break;
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case 'q': ++NumOperations; Operation = QuickAppend; break;
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case 'r': ++NumOperations; Operation = ReplaceOrInsert; break;
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case 't': ++NumOperations; Operation = DisplayTable; break;
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case 'x': ++NumOperations; Operation = Extract; break;
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case 'c': Create = true; break;
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case 'f': TruncateNames = true; break;
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case 'k': DontSkipBitcode = true; break;
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case 'l': /* accepted but unused */ break;
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case 'o': OriginalDates = true; break;
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case 'P': FullPath = true; break;
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case 'R': RecurseDirectories = true; break;
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case 's': SymTable = true; break;
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case 'S': SymTable = false; break;
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case 'u': OnlyUpdate = true; break;
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case 'v': Verbose = true; break;
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case 'V': Verbose = ReallyVerbose = true; break;
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case 'z': Compression = true; break;
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case 'a':
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getRelPos();
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AddAfter = true;
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NumPositional++;
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break;
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case 'b':
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getRelPos();
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AddBefore = true;
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NumPositional++;
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break;
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case 'i':
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getRelPos();
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InsertBefore = true;
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NumPositional++;
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break;
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case 'N':
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getCount();
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UseCount = true;
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break;
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default:
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cl::PrintHelpMessage();
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}
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}
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// At this point, the next thing on the command line must be
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// the archive name.
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getArchive();
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// Everything on the command line at this point is a member.
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getMembers();
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// Perform various checks on the operation/modifier specification
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// to make sure we are dealing with a legal request.
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if (NumOperations == 0)
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throw "You must specify at least one of the operations";
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if (NumOperations > 1)
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throw "Only one operation may be specified";
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if (NumPositional > 1)
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throw "You may only specify one of a, b, and i modifiers";
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if (AddAfter || AddBefore || InsertBefore)
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if (Operation != Move && Operation != ReplaceOrInsert)
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throw "The 'a', 'b' and 'i' modifiers can only be specified with "
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"the 'm' or 'r' operations";
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if (RecurseDirectories && Operation != ReplaceOrInsert)
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throw "The 'R' modifiers is only applicabe to the 'r' operation";
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if (OriginalDates && Operation != Extract)
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throw "The 'o' modifier is only applicable to the 'x' operation";
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if (TruncateNames && Operation!=QuickAppend && Operation!=ReplaceOrInsert)
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throw "The 'f' modifier is only applicable to the 'q' and 'r' operations";
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if (OnlyUpdate && Operation != ReplaceOrInsert)
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throw "The 'u' modifier is only applicable to the 'r' operation";
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if (Compression && Operation!=ReplaceOrInsert && Operation!=Extract)
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throw "The 'z' modifier is only applicable to the 'r' and 'x' operations";
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if (Count > 1 && Members.size() > 1)
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throw "Only one member name may be specified with the 'N' modifier";
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// Return the parsed operation to the caller
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return Operation;
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}
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// recurseDirectories - Implements the "R" modifier. This function scans through
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// the Paths vector (built by buildPaths, below) and replaces any directories it
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// finds with all the files in that directory (recursively). It uses the
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// sys::Path::getDirectoryContent method to perform the actual directory scans.
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bool
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recurseDirectories(const sys::Path& path,
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std::set<sys::Path>& result, std::string* ErrMsg) {
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result.clear();
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if (RecurseDirectories) {
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std::set<sys::Path> content;
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if (path.getDirectoryContents(content, ErrMsg))
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return true;
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for (std::set<sys::Path>::iterator I = content.begin(), E = content.end();
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I != E; ++I) {
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// Make sure it exists and is a directory
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sys::PathWithStatus PwS(*I);
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const sys::FileStatus *Status = PwS.getFileStatus(false, ErrMsg);
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if (!Status)
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return true;
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if (Status->isDir) {
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std::set<sys::Path> moreResults;
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if (recurseDirectories(*I, moreResults, ErrMsg))
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return true;
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result.insert(moreResults.begin(), moreResults.end());
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} else {
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result.insert(*I);
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}
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}
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}
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return false;
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}
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// buildPaths - Convert the strings in the Members vector to sys::Path objects
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// and make sure they are valid and exist exist. This check is only needed for
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// the operations that add/replace files to the archive ('q' and 'r')
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bool buildPaths(bool checkExistence, std::string* ErrMsg) {
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for (unsigned i = 0; i < Members.size(); i++) {
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sys::Path aPath;
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if (!aPath.set(Members[i]))
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throw std::string("File member name invalid: ") + Members[i];
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if (checkExistence) {
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bool Exists;
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if (sys::fs::exists(aPath.str(), Exists) || !Exists)
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throw std::string("File does not exist: ") + Members[i];
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std::string Err;
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sys::PathWithStatus PwS(aPath);
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const sys::FileStatus *si = PwS.getFileStatus(false, &Err);
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if (!si)
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throw Err;
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if (si->isDir) {
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std::set<sys::Path> dirpaths;
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if (recurseDirectories(aPath, dirpaths, ErrMsg))
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return true;
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Paths.insert(dirpaths.begin(),dirpaths.end());
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} else {
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Paths.insert(aPath);
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}
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} else {
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Paths.insert(aPath);
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}
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}
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return false;
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}
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// printSymbolTable - print out the archive's symbol table.
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void printSymbolTable() {
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outs() << "\nArchive Symbol Table:\n";
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const Archive::SymTabType& symtab = TheArchive->getSymbolTable();
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for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end();
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I != E; ++I ) {
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unsigned offset = TheArchive->getFirstFileOffset() + I->second;
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outs() << " " << format("%9u", offset) << "\t" << I->first <<"\n";
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}
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}
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// doPrint - Implements the 'p' operation. This function traverses the archive
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// looking for members that match the path list. It is careful to uncompress
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// things that should be and to skip bitcode files unless the 'k' modifier was
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// given.
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bool doPrint(std::string* ErrMsg) {
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if (buildPaths(false, ErrMsg))
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return true;
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unsigned countDown = Count;
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for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
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I != E; ++I ) {
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if (Paths.empty() ||
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(std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
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if (countDown == 1) {
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const char* data = reinterpret_cast<const char*>(I->getData());
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// Skip things that don't make sense to print
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if (I->isLLVMSymbolTable() || I->isSVR4SymbolTable() ||
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I->isBSD4SymbolTable() || (!DontSkipBitcode && I->isBitcode()))
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continue;
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if (Verbose)
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outs() << "Printing " << I->getPath().str() << "\n";
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unsigned len = I->getSize();
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outs().write(data, len);
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} else {
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countDown--;
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}
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}
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}
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return false;
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}
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// putMode - utility function for printing out the file mode when the 't'
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// operation is in verbose mode.
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void
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printMode(unsigned mode) {
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if (mode & 004)
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outs() << "r";
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else
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outs() << "-";
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if (mode & 002)
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outs() << "w";
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else
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outs() << "-";
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if (mode & 001)
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outs() << "x";
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else
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outs() << "-";
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}
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// doDisplayTable - Implement the 't' operation. This function prints out just
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// the file names of each of the members. However, if verbose mode is requested
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// ('v' modifier) then the file type, permission mode, user, group, size, and
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// modification time are also printed.
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bool
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doDisplayTable(std::string* ErrMsg) {
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if (buildPaths(false, ErrMsg))
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return true;
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for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
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I != E; ++I ) {
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if (Paths.empty() ||
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(std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
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if (Verbose) {
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// FIXME: Output should be this format:
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// Zrw-r--r-- 500/ 500 525 Nov 8 17:42 2004 Makefile
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if (I->isBitcode())
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outs() << "b";
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else if (I->isCompressed())
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outs() << "Z";
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else
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outs() << " ";
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unsigned mode = I->getMode();
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printMode((mode >> 6) & 007);
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printMode((mode >> 3) & 007);
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printMode(mode & 007);
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outs() << " " << format("%4u", I->getUser());
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outs() << "/" << format("%4u", I->getGroup());
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outs() << " " << format("%8u", I->getSize());
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outs() << " " << format("%20s", I->getModTime().str().substr(4).c_str());
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outs() << " " << I->getPath().str() << "\n";
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} else {
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outs() << I->getPath().str() << "\n";
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}
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}
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}
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if (ReallyVerbose)
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printSymbolTable();
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return false;
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}
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// doExtract - Implement the 'x' operation. This function extracts files back to
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// the file system, making sure to uncompress any that were compressed
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bool
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doExtract(std::string* ErrMsg) {
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if (buildPaths(false, ErrMsg))
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return true;
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for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
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I != E; ++I ) {
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if (Paths.empty() ||
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(std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
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// Make sure the intervening directories are created
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if (I->hasPath()) {
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sys::Path dirs(I->getPath());
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dirs.eraseComponent();
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if (dirs.createDirectoryOnDisk(/*create_parents=*/true, ErrMsg))
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return true;
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}
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// Open up a file stream for writing
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std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
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std::ios::binary;
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std::ofstream file(I->getPath().c_str(), io_mode);
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// Get the data and its length
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const char* data = reinterpret_cast<const char*>(I->getData());
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unsigned len = I->getSize();
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// Write the data.
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file.write(data,len);
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file.close();
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// If we're supposed to retain the original modification times, etc. do so
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// now.
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if (OriginalDates)
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I->getPath().setStatusInfoOnDisk(I->getFileStatus());
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}
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}
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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.
|
|
bool Exists;
|
|
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !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;
|
|
}
|