//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Reid Spencer and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/System/Path.h"
#include "llvm/Config/config.h"
+#include "llvm/Support/ErrorHandling.h"
#include <cassert>
+#include <cstring>
#include <ostream>
using namespace llvm;
using namespace sys;
//=== independent code.
//===----------------------------------------------------------------------===//
-std::ostream& llvm::operator<<(std::ostream &strm, const sys::Path &aPath) {
- strm << aPath.toString();
- return strm;
+bool Path::operator==(const Path &that) const {
+ return path == that.path;
+}
+
+bool Path::operator<(const Path& that) const {
+ return path < that.path;
}
Path
}
LLVMFileType
-sys::IdentifyFileType(const char*magic, unsigned length) {
+sys::IdentifyFileType(const char *magic, unsigned length) {
assert(magic && "Invalid magic number string");
assert(length >=4 && "Invalid magic number length");
- switch (magic[0]) {
- case 'l':
- if (magic[1] == 'l' && magic[2] == 'v')
- if (magic[3] == 'c')
- return CompressedBytecode_FileType;
- else if (magic[3] == 'm')
- return Bytecode_FileType;
+ switch ((unsigned char)magic[0]) {
+ case 0xDE: // 0x0B17C0DE = BC wraper
+ if (magic[1] == (char)0xC0 && magic[2] == (char)0x17 &&
+ magic[3] == (char)0x0B)
+ return Bitcode_FileType;
+ break;
+ case 'B':
+ if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
+ return Bitcode_FileType;
break;
case '!':
if (length >= 8)
break;
case '\177':
- if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F')
- return ELF_FileType;
+ if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F') {
+ if (length >= 18 && magic[17] == 0)
+ switch (magic[16]) {
+ default: break;
+ case 1: return ELF_Relocatable_FileType;
+ case 2: return ELF_Executable_FileType;
+ case 3: return ELF_SharedObject_FileType;
+ case 4: return ELF_Core_FileType;
+ }
+ }
break;
- case 0xCE:
- case 0xCF:
- // This is complicated by an overlap with Java class files.
- // See the Mach-O section in /usr/share/file/magic for details.
- if (magic[1] == char(0xFA) && magic[2] == char(0xED) &&
- magic[3] == char(0xFE))
- if (length >= 15)
- if (magic[15] == 1 || magic[15] == 3 || magic[15] == 6 ||
- magic[15] == 9)
- return Mach_O_FileType;
+ case 0xCA:
+ if (magic[1] == char(0xFE) && magic[2] == char(0xBA) &&
+ magic[3] == char(0xBE)) {
+ // This is complicated by an overlap with Java class files.
+ // See the Mach-O section in /usr/share/file/magic for details.
+ if (length >= 8 && magic[7] < 43)
+ // FIXME: Universal Binary of any type.
+ return Mach_O_DynamicallyLinkedSharedLib_FileType;
+ }
break;
+ case 0xFE:
+ case 0xCE: {
+ uint16_t type = 0;
+ if (magic[0] == char(0xFE) && magic[1] == char(0xED) &&
+ magic[2] == char(0xFA) && magic[3] == char(0xCE)) {
+ /* Native endian */
+ if (length >= 16) type = magic[14] << 8 | magic[15];
+ } else if (magic[0] == char(0xCE) && magic[1] == char(0xFA) &&
+ magic[2] == char(0xED) && magic[3] == char(0xFE)) {
+ /* Reverse endian */
+ if (length >= 14) type = magic[13] << 8 | magic[12];
+ }
+ switch (type) {
+ default: break;
+ case 1: return Mach_O_Object_FileType;
+ case 2: return Mach_O_Executable_FileType;
+ case 3: return Mach_O_FixedVirtualMemorySharedLib_FileType;
+ case 4: return Mach_O_Core_FileType;
+ case 5: return Mach_O_PreloadExectuable_FileType;
+ case 6: return Mach_O_DynamicallyLinkedSharedLib_FileType;
+ case 7: return Mach_O_DynamicLinker_FileType;
+ case 8: return Mach_O_Bundle_FileType;
+ case 9: return Mach_O_DynamicallyLinkedSharedLibStub_FileType;
+ case 10: break; // FIXME: MH_DSYM companion file with only debug.
+ }
+ break;
+ }
case 0xF0: // PowerPC Windows
case 0x83: // Alpha 32-bit
case 0x84: // Alpha 64-bit
bool
Path::isDynamicLibrary() const {
- if (canRead())
- return hasMagicNumber("\177ELF");
+ if (canRead()) {
+ std::string Magic;
+ if (getMagicNumber(Magic, 64))
+ switch (IdentifyFileType(Magic.c_str(),
+ static_cast<unsigned>(Magic.length()))) {
+ default: return false;
+ case Mach_O_FixedVirtualMemorySharedLib_FileType:
+ case Mach_O_DynamicallyLinkedSharedLib_FileType:
+ case Mach_O_DynamicallyLinkedSharedLibStub_FileType:
+ case ELF_SharedObject_FileType:
+ case COFF_FileType: return true;
+ }
+ }
return false;
}
return LTDL_SHLIB_EXT;
}
+bool
+Path::isBitcodeFile() const {
+ std::string actualMagic;
+ if (!getMagicNumber(actualMagic, 4))
+ return false;
+ LLVMFileType FT =
+ IdentifyFileType(actualMagic.c_str(),
+ static_cast<unsigned>(actualMagic.length()));
+ return FT == Bitcode_FileType;
+}
+
+bool Path::hasMagicNumber(const std::string &Magic) const {
+ std::string actualMagic;
+ if (getMagicNumber(actualMagic, static_cast<unsigned>(Magic.size())))
+ return Magic == actualMagic;
+ return false;
+}
+
+static void getPathList(const char*path, std::vector<Path>& Paths) {
+ const char* at = path;
+ const char* delim = strchr(at, PathSeparator);
+ Path tmpPath;
+ while (delim != 0) {
+ std::string tmp(at, size_t(delim-at));
+ if (tmpPath.set(tmp))
+ if (tmpPath.canRead())
+ Paths.push_back(tmpPath);
+ at = delim + 1;
+ delim = strchr(at, PathSeparator);
+ }
+
+ if (*at != 0)
+ if (tmpPath.set(std::string(at)))
+ if (tmpPath.canRead())
+ Paths.push_back(tmpPath);
+}
+
+static std::string getDirnameCharSep(const std::string& path, char Sep) {
+
+ if (path.empty())
+ return ".";
+
+ // If the path is all slashes, return a single slash.
+ // Otherwise, remove all trailing slashes.
+
+ signed pos = static_cast<signed>(path.size()) - 1;
+
+ while (pos >= 0 && path[pos] == Sep)
+ --pos;
+
+ if (pos < 0)
+ return path[0] == Sep ? std::string(1, Sep) : std::string(".");
+
+ // Any slashes left?
+ signed i = 0;
+
+ while (i < pos && path[i] != Sep)
+ ++i;
+
+ if (i == pos) // No slashes? Return "."
+ return ".";
+
+ // There is at least one slash left. Remove all trailing non-slashes.
+ while (pos >= 0 && path[pos] != Sep)
+ --pos;
+
+ // Remove any trailing slashes.
+ while (pos >= 0 && path[pos] == Sep)
+ --pos;
+
+ if (pos < 0)
+ return path[0] == Sep ? std::string(1, Sep) : std::string(".");
+
+ return path.substr(0, pos+1);
+}
+
// Include the truly platform-specific parts of this class.
#if defined(LLVM_ON_UNIX)
#include "Unix/Path.inc"
#include "Win32/Path.inc"
#endif
-DEFINING_FILE_FOR(SystemPath)
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