<commit_before>//===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  This header file implements the operating system Path concept.
//
//===----------------------------------------------------------------------===//

#include "llvm/System/Path.h"
#include "llvm/Config/config.h"
#include <cassert>
#include <cstring>
#include <ostream>
using namespace llvm;
using namespace sys;

//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
//===          independent code.
//===----------------------------------------------------------------------===//

bool Path::operator==(const Path &that) const {
  return path == that.path;
}

bool Path::operator!=(const Path &that) const {
  return path != that.path;
}

bool Path::operator<(const Path& that) const {
  return path < that.path;
}

std::ostream& llvm::operator<<(std::ostream &strm, const sys::Path &aPath) {
  strm << aPath.toString();
  return strm;
}

Path
Path::GetLLVMConfigDir() {
  Path result;
#ifdef LLVM_ETCDIR
  if (result.set(LLVM_ETCDIR))
    return result;
#endif
  return GetLLVMDefaultConfigDir();
}

LLVMFileType
sys::IdentifyFileType(const char*magic, unsigned length) {
  assert(magic && "Invalid magic number string");
  assert(length >=4 && "Invalid magic number length");
  switch (magic[0]) {
    case 'B':
      if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
        return Bitcode_FileType;
      break;
    case '!':
      if (length >= 8)
        if (memcmp(magic,"!<arch>\n",8) == 0)
          return Archive_FileType;
      break;
      
    case '\177':
      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 0xCA:
      // 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(0xFE) && magic[2] == char(0xBA) && 
          magic[3] == char(0xBE)) {
        return Mach_O_DynamicallyLinkedSharedLib_FileType;
        
        // FIXME: How does this work?
        if (length >= 14 && magic[13] == 0)
          switch (magic[12]) {
            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;
          }
      }
      break;

    case 0xF0: // PowerPC Windows
    case 0x83: // Alpha 32-bit
    case 0x84: // Alpha 64-bit
    case 0x66: // MPS R4000 Windows
    case 0x50: // mc68K
    case 0x4c: // 80386 Windows
      if (magic[1] == 0x01)
        return COFF_FileType;

    case 0x90: // PA-RISC Windows
    case 0x68: // mc68K Windows
      if (magic[1] == 0x02)
        return COFF_FileType;<commit_msg>"An improved Mach-O file type detection for sys::IdentifyFileType() This patch add supports for single architecture mach-o files (the current implementation only support Universal Binary), and solve the signature conflict between java class and Universal Binary magics.<commit_after>//===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  This header file implements the operating system Path concept.
//
//===----------------------------------------------------------------------===//

#include "llvm/System/Path.h"
#include "llvm/Config/config.h"
#include <cassert>
#include <cstring>
#include <ostream>
using namespace llvm;
using namespace sys;

//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
//===          independent code.
//===----------------------------------------------------------------------===//

bool Path::operator==(const Path &that) const {
  return path == that.path;
}

bool Path::operator!=(const Path &that) const {
  return path != that.path;
}

bool Path::operator<(const Path& that) const {
  return path < that.path;
}

std::ostream& llvm::operator<<(std::ostream &strm, const sys::Path &aPath) {
  strm << aPath.toString();
  return strm;
}

Path
Path::GetLLVMConfigDir() {
  Path result;
#ifdef LLVM_ETCDIR
  if (result.set(LLVM_ETCDIR))
    return result;
#endif
  return GetLLVMDefaultConfigDir();
}

LLVMFileType
sys::IdentifyFileType(const char*magic, unsigned length) {
  assert(magic && "Invalid magic number string");
  assert(length >=4 && "Invalid magic number length");
  switch (magic[0]) {
    case 'B':
      if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
        return Bitcode_FileType;
      break;
    case '!':
      if (length >= 8)
        if (memcmp(magic,"!<arch>\n",8) == 0)
          return Archive_FileType;
      break;
      
    case '\177':
      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 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;
      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
    case 0x66: // MPS R4000 Windows
    case 0x50: // mc68K
    case 0x4c: // 80386 Windows
      if (magic[1] == 0x01)
        return COFF_FileType;

    case 0x90: // PA-RISC Windows
    case 0x68: // mc68K Windows
      if (magic[1] == 0x02)
        return COFF_FileType;
{'fraction_non_alphanumeric': 0.19558735837805605, 'fraction_numerical': 0.02731067382230173, 'mean_word_length': 1.9790408525754886, 'pattern_counts': {'":': 0, '<': 28, '<?xml version=': 0, '>': 21, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4583056', 'n_tokens_mistral': 2689, 'n_tokens_neox': 2472, 'n_words': 703}