C++ FileSpec::Exists方法代码示例

static bool
LocateDSYMInVincinityOfExecutable (const ModuleSpec &module_spec, FileSpec &dsym_fspec)
{
    const FileSpec *exec_fspec = module_spec.GetFileSpecPtr();
    if (exec_fspec)
    {
        char path[PATH_MAX];
        if (exec_fspec->GetPath(path, sizeof(path)))
        {
            // Make sure the module isn't already just a dSYM file...
            if (strcasestr(path, ".dSYM/Contents/Resources/DWARF") == NULL)
            {
                size_t obj_file_path_length = strlen(path);
                strlcat(path, ".dSYM/Contents/Resources/DWARF/", sizeof(path));
                strlcat(path, exec_fspec->GetFilename().AsCString(), sizeof(path));

                dsym_fspec.SetFile(path, false);

                if (dsym_fspec.Exists() && FileAtPathContainsArchAndUUID (dsym_fspec, module_spec.GetArchitecturePtr(), module_spec.GetUUIDPtr()))
                {
                    return true;
                }
                else
                {
                    path[obj_file_path_length] = '\0';

                    char *last_dot = strrchr(path, '.');
                    while (last_dot != NULL && last_dot[0])
                    {
                        char *next_slash = strchr(last_dot, '/');
                        if (next_slash != NULL)
                        {
                            *next_slash = '\0';
                            strlcat(path, ".dSYM/Contents/Resources/DWARF/", sizeof(path));
                            strlcat(path, exec_fspec->GetFilename().AsCString(), sizeof(path));
                            dsym_fspec.SetFile(path, false);
                            if (dsym_fspec.Exists() && FileAtPathContainsArchAndUUID (dsym_fspec, module_spec.GetArchitecturePtr(), module_spec.GetUUIDPtr()))
                                return true;
                            else
                            {
                                *last_dot = '\0';
                                char *prev_slash = strrchr(path, '/');
                                if (prev_slash != NULL)
                                    *prev_slash = '\0';
                                else
                                    break;
                            }
                        }
                        else
                        {
                            break;
                        }
                    }
                }
            }
        }
    }
    dsym_fspec.Clear();
    return false;
}

Error PlatformiOSSimulator::GetSymbolFile(const FileSpec &platform_file,
        const UUID *uuid_ptr,
        FileSpec &local_file) {
    Error error;
    char platform_file_path[PATH_MAX];
    if (platform_file.GetPath(platform_file_path, sizeof(platform_file_path))) {
        char resolved_path[PATH_MAX];

        const char *sdk_dir = GetSDKDirectoryAsCString();
        if (sdk_dir) {
            ::snprintf(resolved_path, sizeof(resolved_path), "%s/%s", sdk_dir,
                       platform_file_path);

            // First try in the SDK and see if the file is in there
            local_file.SetFile(resolved_path, true);
            if (local_file.Exists())
                return error;

            // Else fall back to the actual path itself
            local_file.SetFile(platform_file_path, true);
            if (local_file.Exists())
                return error;
        }
        error.SetErrorStringWithFormat(
            "unable to locate a platform file for '%s' in platform '%s'",
            platform_file_path, GetPluginName().GetCString());
    } else {
        error.SetErrorString("invalid platform file argument");
    }
    return error;
}

Error PlatformRemoteAppleWatch::GetSymbolFile(const FileSpec &platform_file,
                                              const UUID *uuid_ptr,
                                              FileSpec &local_file) {
  Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
  Error error;
  char platform_file_path[PATH_MAX];
  if (platform_file.GetPath(platform_file_path, sizeof(platform_file_path))) {
    char resolved_path[PATH_MAX];

    const char *os_version_dir = GetDeviceSupportDirectoryForOSVersion();
    if (os_version_dir) {
      ::snprintf(resolved_path, sizeof(resolved_path), "%s/%s", os_version_dir,
                 platform_file_path);

      local_file.SetFile(resolved_path, true);
      if (local_file.Exists()) {
        if (log) {
          log->Printf("Found a copy of %s in the DeviceSupport dir %s",
                      platform_file_path, os_version_dir);
        }
        return error;
      }

      ::snprintf(resolved_path, sizeof(resolved_path), "%s/Symbols.Internal/%s",
                 os_version_dir, platform_file_path);

      local_file.SetFile(resolved_path, true);
      if (local_file.Exists()) {
        if (log) {
          log->Printf(
              "Found a copy of %s in the DeviceSupport dir %s/Symbols.Internal",
              platform_file_path, os_version_dir);
        }
        return error;
      }
      ::snprintf(resolved_path, sizeof(resolved_path), "%s/Symbols/%s",
                 os_version_dir, platform_file_path);

      local_file.SetFile(resolved_path, true);
      if (local_file.Exists()) {
        if (log) {
          log->Printf("Found a copy of %s in the DeviceSupport dir %s/Symbols",
                      platform_file_path, os_version_dir);
        }
        return error;
      }
    }
    local_file = platform_file;
    if (local_file.Exists())
      return error;

    error.SetErrorStringWithFormat(
        "unable to locate a platform file for '%s' in platform '%s'",
        platform_file_path, GetPluginName().GetCString());
  } else {
    error.SetErrorString("invalid platform file argument");
  }
  return error;
}

Error
PlatformRemoteiOS::GetSymbolFile (const FileSpec &platform_file, 
                                  const UUID *uuid_ptr,
                                  FileSpec &local_file)
{
    Error error;
    char platform_file_path[PATH_MAX];
    if (platform_file.GetPath(platform_file_path, sizeof(platform_file_path)))
    {
        char resolved_path[PATH_MAX];
    
        const char * os_version_dir = GetDeviceSupportDirectoryForOSVersion();
        if (os_version_dir)
        {
            ::snprintf (resolved_path, 
                        sizeof(resolved_path), 
                        "%s/%s", 
                        os_version_dir, 
                        platform_file_path);
            
            local_file.SetFile(resolved_path, true);
            if (local_file.Exists())
                return error;

            ::snprintf (resolved_path, 
                        sizeof(resolved_path), 
                        "%s/Symbols.Internal/%s", 
                        os_version_dir, 
                        platform_file_path);

            local_file.SetFile(resolved_path, true);
            if (local_file.Exists())
                return error;
            ::snprintf (resolved_path, 
                        sizeof(resolved_path), 
                        "%s/Symbols/%s", 
                        os_version_dir, 
                        platform_file_path);

            local_file.SetFile(resolved_path, true);
            if (local_file.Exists())
                return error;

        }
        local_file = platform_file;
        if (local_file.Exists())
            return error;

        error.SetErrorStringWithFormat ("unable to locate a platform file for '%s' in platform '%s'", 
                                        platform_file_path,
                                        GetPluginName().GetCString());
    }
    else
    {
        error.SetErrorString ("invalid platform file argument");
    }
    return error;
}

bool
PathMappingList::FindFile (const FileSpec &orig_spec, FileSpec &new_spec) const
{
    if (!m_pairs.empty())
    {
        char orig_path[PATH_MAX];
        char new_path[PATH_MAX];
        const size_t orig_path_len = orig_spec.GetPath (orig_path, sizeof(orig_path));
        if (orig_path_len > 0)
        {
            const_iterator pos, end = m_pairs.end();
            for (pos = m_pairs.begin(); pos != end; ++pos)
            {
                const size_t prefix_len = pos->first.GetLength();
                
                if (orig_path_len >= prefix_len)
                {
                    if (::strncmp (pos->first.GetCString(), orig_path, prefix_len) == 0)
                    {
                        const size_t new_path_len = snprintf(new_path, sizeof(new_path), "%s/%s", pos->second.GetCString(), orig_path + prefix_len);
                        if (new_path_len < sizeof(new_path))
                        {
                            new_spec.SetFile (new_path, true);
                            if (new_spec.Exists())
                                return true;
                        }
                    }
                }
            }
        }
    }
    new_spec.Clear();
    return false;
}

void
PlatformDarwinKernel::GetUserSpecifiedDirectoriesToSearch (std::vector<lldb_private::FileSpec> &directories)
{
    FileSpecList user_dirs(GetGlobalProperties()->GetKextDirectories());
    std::vector<FileSpec> possible_sdk_dirs;

    const uint32_t user_dirs_count = user_dirs.GetSize();
    for (uint32_t i = 0; i < user_dirs_count; i++)
    {
        FileSpec dir = user_dirs.GetFileSpecAtIndex (i);
        dir.ResolvePath();
        if (dir.Exists() && dir.IsDirectory())
        {
            directories.push_back (dir);
            possible_sdk_dirs.push_back (dir);  // does this directory have a *.sdk or *.kdk that we should look in?

            // Is there a "System/Library/Extensions" subdir of this directory?
            std::string dir_sle_path = dir.GetPath();
            dir_sle_path.append ("/System/Library/Extensions");
            FileSpec dir_sle(dir_sle_path.c_str(), true);
            if (dir_sle.Exists() && dir_sle.IsDirectory())
            {
                directories.push_back (dir_sle);
            }
        }
    }

    SearchSDKsForKextDirectories (possible_sdk_dirs, directories);
}

static llvm::sys::DynamicLibrary
LoadPlugin (const lldb::DebuggerSP &debugger_sp, const FileSpec& spec, Error& error)
{
    llvm::sys::DynamicLibrary dynlib = llvm::sys::DynamicLibrary::getPermanentLibrary(spec.GetPath().c_str());
    if (dynlib.isValid())
    {
        typedef bool (*LLDBCommandPluginInit) (lldb::SBDebugger& debugger);
        
        lldb::SBDebugger debugger_sb(debugger_sp);
        // This calls the bool lldb::PluginInitialize(lldb::SBDebugger debugger) function.
        // TODO: mangle this differently for your system - on OSX, the first underscore needs to be removed and the second one stays
        LLDBCommandPluginInit init_func = (LLDBCommandPluginInit)dynlib.getAddressOfSymbol("_ZN4lldb16PluginInitializeENS_10SBDebuggerE");
        if (init_func)
        {
            if (init_func(debugger_sb))
                return dynlib;
            else
                error.SetErrorString("plug-in refused to load (lldb::PluginInitialize(lldb::SBDebugger) returned false)");
        }
        else
        {
            error.SetErrorString("plug-in is missing the required initialization: lldb::PluginInitialize(lldb::SBDebugger)");
        }
    }
    else
    {
        if (spec.Exists())
            error.SetErrorString("this file does not represent a loadable dylib");
        else
            error.SetErrorString("no such file");
    }
    return llvm::sys::DynamicLibrary();
}

Error
PlatformDarwin::ResolveSymbolFile (Target &target,
                                   const ModuleSpec &sym_spec,
                                   FileSpec &sym_file)
{
    Error error;
    sym_file = sym_spec.GetSymbolFileSpec();
    if (sym_file.Exists())
    {
        if (sym_file.GetFileType() == FileSpec::eFileTypeDirectory)
        {
            sym_file = Symbols::FindSymbolFileInBundle (sym_file,
                                                        sym_spec.GetUUIDPtr(),
                                                        sym_spec.GetArchitecturePtr());
        }
    }
    else
    {
        if (sym_spec.GetUUID().IsValid())
        {
            
        }
    }
    return error;
    
}

bool
PlatformPOSIX::GetFileExists (const FileSpec& file_spec)
{
    if (IsHost())
        return file_spec.Exists();
    else if (m_remote_platform_sp)
        return m_remote_platform_sp->GetFileExists(file_spec);
    else
        return Platform::GetFileExists(file_spec);
}

bool
HostInfoLinux::ComputeSupportExeDirectory(FileSpec &file_spec)
{
    if (HostInfoPosix::ComputeSupportExeDirectory(file_spec) &&
            !file_spec.IsRelativeToCurrentWorkingDirectory() &&
            file_spec.Exists())
        return true;
    file_spec.GetDirectory() = GetProgramFileSpec().GetDirectory();
    return !file_spec.GetDirectory().IsEmpty();
}

Error
Platform::ResolveExecutable (const FileSpec &exe_file,
                             const ArchSpec &exe_arch,
                             lldb::ModuleSP &exe_module_sp)
{
    Error error;
    if (exe_file.Exists())
    {
        if (exe_arch.IsValid())
        {
            error = ModuleList::GetSharedModule (exe_file, 
                                                 exe_arch, 
                                                 NULL,
                                                 NULL, 
                                                 0, 
                                                 exe_module_sp, 
                                                 NULL, 
                                                 NULL);
        }
        else
        {
            // No valid architecture was specified, ask the platform for
            // the architectures that we should be using (in the correct order)
            // and see if we can find a match that way
            ArchSpec platform_arch;
            for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, platform_arch); ++idx)
            {
                error = ModuleList::GetSharedModule (exe_file, 
                                                     platform_arch, 
                                                     NULL,
                                                     NULL, 
                                                     0, 
                                                     exe_module_sp, 
                                                     NULL, 
                                                     NULL);
                // Did we find an executable using one of the 
                if (error.Success() && exe_module_sp)
                    break;
            }
        }
    }
    else
    {
        error.SetErrorStringWithFormat ("'%s%s%s' does not exist",
                                        exe_file.GetDirectory().AsCString(""),
                                        exe_file.GetDirectory() ? "/" : "",
                                        exe_file.GetFilename().AsCString(""));
    }
    return error;
}

Error
Platform::ResolveExecutable (const FileSpec &exe_file,
                             const ArchSpec &exe_arch,
                             lldb::ModuleSP &exe_module_sp,
                             const FileSpecList *module_search_paths_ptr)
{
    Error error;
    if (exe_file.Exists())
    {
        ModuleSpec module_spec (exe_file, exe_arch);
        if (module_spec.GetArchitecture().IsValid())
        {
            error = ModuleList::GetSharedModule (module_spec, 
                                                 exe_module_sp, 
                                                 module_search_paths_ptr,
                                                 NULL, 
                                                 NULL);
        }
        else
        {
            // No valid architecture was specified, ask the platform for
            // the architectures that we should be using (in the correct order)
            // and see if we can find a match that way
            for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, module_spec.GetArchitecture()); ++idx)
            {
                error = ModuleList::GetSharedModule (module_spec, 
                                                     exe_module_sp, 
                                                     module_search_paths_ptr,
                                                     NULL, 
                                                     NULL);
                // Did we find an executable using one of the 
                if (error.Success() && exe_module_sp)
                    break;
            }
        }
    }
    else
    {
        error.SetErrorStringWithFormat ("'%s' does not exist",
                                        exe_file.GetPath().c_str());
    }
    return error;
}

FileSpec::EnumerateDirectoryResult
PlatformDarwinKernel::GetKextsInDirectory (void *baton,
                                           FileSpec::FileType file_type,
                                           const FileSpec &file_spec)
{
    if (file_type == FileSpec::eFileTypeDirectory && file_spec.GetFileNameExtension() == ConstString("kext"))
    {
        ((std::vector<lldb_private::FileSpec> *)baton)->push_back(file_spec);
        std::string kext_bundle_path = file_spec.GetPath();
        std::string search_here_too;
        std::string contents_plugins_path = kext_bundle_path + "/Contents/PlugIns";
        FileSpec contents_plugins (contents_plugins_path.c_str(), false);
        if (contents_plugins.Exists() && contents_plugins.IsDirectory())
        {
            search_here_too = contents_plugins_path;
        }
        else
        {
            std::string plugins_path = kext_bundle_path + "/PlugIns";
            FileSpec plugins (plugins_path.c_str(), false);
            if (plugins.Exists() && plugins.IsDirectory())
            {
                search_here_too = plugins_path;
            }
        }

        if (!search_here_too.empty())
        {
            const bool find_directories = true;
            const bool find_files = false;
            const bool find_other = false;
            FileSpec::EnumerateDirectory (search_here_too.c_str(),
                                          find_directories,
                                          find_files,
                                          find_other,
                                          GetKextsInDirectory,
                                          baton);
        }
    }
    return FileSpec::eEnumerateDirectoryResultNext;
}

bool
FileSystem::GetFileExists(const FileSpec &file_spec)
{
    return file_spec.Exists();
}

Error
TargetList::CreateTargetInternal (Debugger &debugger,
                                  const char *user_exe_path,
                                  const ArchSpec& specified_arch,
                                  bool get_dependent_files,
                                  lldb::PlatformSP &platform_sp,
                                  lldb::TargetSP &target_sp,
                                  bool is_dummy_target)
{

    Timer scoped_timer (__PRETTY_FUNCTION__,
                        "TargetList::CreateTarget (file = '%s', arch = '%s')",
                        user_exe_path,
                        specified_arch.GetArchitectureName());
    Error error;

    ArchSpec arch(specified_arch);

    if (arch.IsValid())
    {
        if (!platform_sp || !platform_sp->IsCompatibleArchitecture(arch, false, NULL))
            platform_sp = Platform::GetPlatformForArchitecture(specified_arch, &arch);
    }
    
    if (!platform_sp)
        platform_sp = debugger.GetPlatformList().GetSelectedPlatform();

    if (!arch.IsValid())
        arch = specified_arch;

    FileSpec file (user_exe_path, false);
    if (!file.Exists() && user_exe_path && user_exe_path[0] == '~')
    {
        // we want to expand the tilde but we don't want to resolve any symbolic links
        // so we can't use the FileSpec constructor's resolve flag
        llvm::SmallString<64> unglobbed_path(user_exe_path);
        FileSpec::ResolveUsername(unglobbed_path);

        if (unglobbed_path.empty())
            file = FileSpec(user_exe_path, false);
        else
            file = FileSpec(unglobbed_path.c_str(), false);
    }

    bool user_exe_path_is_bundle = false;
    char resolved_bundle_exe_path[PATH_MAX];
    resolved_bundle_exe_path[0] = '\0';
    if (file)
    {
        if (file.GetFileType() == FileSpec::eFileTypeDirectory)
            user_exe_path_is_bundle = true;

        if (file.IsRelative() && user_exe_path)
        {
            // Ignore paths that start with "./" and "../"
            if (!((user_exe_path[0] == '.' && user_exe_path[1] == '/') ||
                  (user_exe_path[0] == '.' && user_exe_path[1] == '.' && user_exe_path[2] == '/')))
            {
                char cwd[PATH_MAX];
                if (getcwd (cwd, sizeof(cwd)))
                {
                    std::string cwd_user_exe_path (cwd);
                    cwd_user_exe_path += '/';
                    cwd_user_exe_path += user_exe_path;
                    FileSpec cwd_file (cwd_user_exe_path.c_str(), false);
                    if (cwd_file.Exists())
                        file = cwd_file;
                }
            }
        }

        ModuleSP exe_module_sp;
        if (platform_sp)
        {
            FileSpecList executable_search_paths (Target::GetDefaultExecutableSearchPaths());
            ModuleSpec module_spec(file, arch);
            error = platform_sp->ResolveExecutable (module_spec,
                                                    exe_module_sp, 
                                                    executable_search_paths.GetSize() ? &executable_search_paths : NULL);
        }

        if (error.Success() && exe_module_sp)
        {
            if (exe_module_sp->GetObjectFile() == NULL)
            {
                if (arch.IsValid())
                {
                    error.SetErrorStringWithFormat("\"%s\" doesn't contain architecture %s",
                                                   file.GetPath().c_str(),
                                                   arch.GetArchitectureName());
                }
                else
                {
                    error.SetErrorStringWithFormat("unsupported file type \"%s\"",
                                                   file.GetPath().c_str());
                }
                return error;
            }
            target_sp.reset(new Target(debugger, arch, platform_sp, is_dummy_target));
            target_sp->SetExecutableModule (exe_module_sp, get_dependent_files);
//.........这里部分代码省略.........