1673 lines
52 KiB
C++
1673 lines
52 KiB
C++
//===-- FileSpec.cpp --------------------------------------------*- C++ -*-===//
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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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#ifndef _WIN32
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#include <dirent.h>
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#else
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#include "lldb/Host/windows/windows.h"
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#endif
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#include <fcntl.h>
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#ifndef _MSC_VER
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#include <libgen.h>
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#endif
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#include <set>
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#include <string.h>
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#include <fstream>
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#include "lldb/Host/Config.h" // Have to include this before we test the define...
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#ifdef LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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#include <pwd.h>
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#endif
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#include "lldb/Core/ArchSpec.h"
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#include "lldb/Core/DataBufferHeap.h"
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#include "lldb/Core/DataBufferMemoryMap.h"
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#include "lldb/Core/RegularExpression.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Host/File.h"
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#include "lldb/Host/FileSpec.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Utility/CleanUp.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/ConvertUTF.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Program.h"
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using namespace lldb;
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using namespace lldb_private;
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namespace {
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bool
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PathSyntaxIsPosix(FileSpec::PathSyntax syntax)
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{
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return (syntax == FileSpec::ePathSyntaxPosix ||
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(syntax == FileSpec::ePathSyntaxHostNative &&
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FileSystem::GetNativePathSyntax() == FileSpec::ePathSyntaxPosix));
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}
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const char *
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GetPathSeparators(FileSpec::PathSyntax syntax)
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{
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return PathSyntaxIsPosix(syntax) ? "/" : "\\/";
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}
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char
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GetPrefferedPathSeparator(FileSpec::PathSyntax syntax)
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{
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return GetPathSeparators(syntax)[0];
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}
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bool
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IsPathSeparator(char value, FileSpec::PathSyntax syntax)
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{
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return value == '/' || (!PathSyntaxIsPosix(syntax) && value == '\\');
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}
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void
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Normalize(llvm::SmallVectorImpl<char> &path, FileSpec::PathSyntax syntax)
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{
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if (PathSyntaxIsPosix(syntax)) return;
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std::replace(path.begin(), path.end(), '\\', '/');
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// Windows path can have \\ slashes which can be changed by replace
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// call above to //. Here we remove the duplicate.
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auto iter = std::unique ( path.begin(), path.end(),
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[]( char &c1, char &c2 ){
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return (c1 == '/' && c2 == '/');});
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path.erase(iter, path.end());
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}
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void
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Denormalize(llvm::SmallVectorImpl<char> &path, FileSpec::PathSyntax syntax)
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{
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if (PathSyntaxIsPosix(syntax)) return;
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std::replace(path.begin(), path.end(), '/', '\\');
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}
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bool
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GetFileStats (const FileSpec *file_spec, struct stat *stats_ptr)
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{
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char resolved_path[PATH_MAX];
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if (file_spec->GetPath (resolved_path, sizeof(resolved_path)))
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return FileSystem::Stat(resolved_path, stats_ptr) == 0;
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return false;
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}
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size_t
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FilenamePos(llvm::StringRef str, FileSpec::PathSyntax syntax)
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{
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if (str.size() == 2 && IsPathSeparator(str[0], syntax) && str[0] == str[1])
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return 0;
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if (str.size() > 0 && IsPathSeparator(str.back(), syntax))
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return str.size() - 1;
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size_t pos = str.find_last_of(GetPathSeparators(syntax), str.size() - 1);
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if (!PathSyntaxIsPosix(syntax) && pos == llvm::StringRef::npos)
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pos = str.find_last_of(':', str.size() - 2);
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if (pos == llvm::StringRef::npos || (pos == 1 && IsPathSeparator(str[0], syntax)))
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return 0;
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return pos + 1;
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}
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size_t
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RootDirStart(llvm::StringRef str, FileSpec::PathSyntax syntax)
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{
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// case "c:/"
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if (!PathSyntaxIsPosix(syntax) && (str.size() > 2 && str[1] == ':' && IsPathSeparator(str[2], syntax)))
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return 2;
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// case "//"
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if (str.size() == 2 && IsPathSeparator(str[0], syntax) && str[0] == str[1])
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return llvm::StringRef::npos;
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// case "//net"
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if (str.size() > 3 && IsPathSeparator(str[0], syntax) && str[0] == str[1] && !IsPathSeparator(str[2], syntax))
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return str.find_first_of(GetPathSeparators(syntax), 2);
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// case "/"
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if (str.size() > 0 && IsPathSeparator(str[0], syntax))
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return 0;
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return llvm::StringRef::npos;
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}
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size_t
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ParentPathEnd(llvm::StringRef path, FileSpec::PathSyntax syntax)
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{
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size_t end_pos = FilenamePos(path, syntax);
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bool filename_was_sep = path.size() > 0 && IsPathSeparator(path[end_pos], syntax);
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// Skip separators except for root dir.
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size_t root_dir_pos = RootDirStart(path.substr(0, end_pos), syntax);
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while (end_pos > 0 && (end_pos - 1) != root_dir_pos && IsPathSeparator(path[end_pos - 1], syntax))
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--end_pos;
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if (end_pos == 1 && root_dir_pos == 0 && filename_was_sep)
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return llvm::StringRef::npos;
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return end_pos;
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}
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} // end anonymous namespace
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// Resolves the username part of a path of the form ~user/other/directories, and
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// writes the result into dst_path. This will also resolve "~" to the current user.
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// If you want to complete "~" to the list of users, pass it to ResolvePartialUsername.
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void
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FileSpec::ResolveUsername (llvm::SmallVectorImpl<char> &path)
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{
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#if LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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if (path.empty() || path[0] != '~')
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return;
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llvm::StringRef path_str(path.data(), path.size());
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size_t slash_pos = path_str.find('/', 1);
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if (slash_pos == 1 || path.size() == 1)
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{
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// A path of ~/ resolves to the current user's home dir
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llvm::SmallString<64> home_dir;
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// llvm::sys::path::home_directory() only checks if "HOME" is set in the
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// environment and does nothing else to locate the user home directory
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if (!llvm::sys::path::home_directory(home_dir))
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{
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struct passwd *pw = getpwuid(getuid());
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if (pw && pw->pw_dir && pw->pw_dir[0])
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{
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// Update our environemnt so llvm::sys::path::home_directory() works next time
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setenv("HOME", pw->pw_dir, 0);
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home_dir.assign(llvm::StringRef(pw->pw_dir));
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}
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else
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{
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return;
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}
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}
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// Overwrite the ~ with the first character of the homedir, and insert
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// the rest. This way we only trigger one move, whereas an insert
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// followed by a delete (or vice versa) would trigger two.
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path[0] = home_dir[0];
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path.insert(path.begin() + 1, home_dir.begin() + 1, home_dir.end());
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return;
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}
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auto username_begin = path.begin()+1;
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auto username_end = (slash_pos == llvm::StringRef::npos)
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? path.end()
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: (path.begin() + slash_pos);
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size_t replacement_length = std::distance(path.begin(), username_end);
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llvm::SmallString<20> username(username_begin, username_end);
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struct passwd *user_entry = ::getpwnam(username.c_str());
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if (user_entry != nullptr)
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{
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// Copy over the first n characters of the path, where n is the smaller of the length
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// of the home directory and the slash pos.
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llvm::StringRef homedir(user_entry->pw_dir);
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size_t initial_copy_length = std::min(homedir.size(), replacement_length);
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auto src_begin = homedir.begin();
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auto src_end = src_begin + initial_copy_length;
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std::copy(src_begin, src_end, path.begin());
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if (replacement_length > homedir.size())
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{
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// We copied the entire home directory, but the ~username portion of the path was
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// longer, so there's characters that need to be removed.
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path.erase(path.begin() + initial_copy_length, username_end);
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}
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else if (replacement_length < homedir.size())
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{
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// We copied all the way up to the slash in the destination, but there's still more
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// characters that need to be inserted.
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path.insert(username_end, src_end, homedir.end());
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}
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}
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else
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{
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// Unable to resolve username (user doesn't exist?)
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path.clear();
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}
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#endif
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}
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size_t
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FileSpec::ResolvePartialUsername (const char *partial_name, StringList &matches)
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{
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#ifdef LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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size_t extant_entries = matches.GetSize();
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setpwent();
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struct passwd *user_entry;
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const char *name_start = partial_name + 1;
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std::set<std::string> name_list;
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while ((user_entry = getpwent()) != NULL)
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{
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if (strstr(user_entry->pw_name, name_start) == user_entry->pw_name)
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{
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std::string tmp_buf("~");
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tmp_buf.append(user_entry->pw_name);
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tmp_buf.push_back('/');
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name_list.insert(tmp_buf);
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}
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}
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std::set<std::string>::iterator pos, end = name_list.end();
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for (pos = name_list.begin(); pos != end; pos++)
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{
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matches.AppendString((*pos).c_str());
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}
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return matches.GetSize() - extant_entries;
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#else
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// Resolving home directories is not supported, just copy the path...
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return 0;
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#endif // #ifdef LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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}
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void
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FileSpec::Resolve (llvm::SmallVectorImpl<char> &path)
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{
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if (path.empty())
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return;
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#ifdef LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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if (path[0] == '~')
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ResolveUsername(path);
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#endif // #ifdef LLDB_CONFIG_TILDE_RESOLVES_TO_USER
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// Save a copy of the original path that's passed in
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llvm::SmallString<128> original_path(path.begin(), path.end());
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llvm::sys::fs::make_absolute(path);
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if (!llvm::sys::fs::exists(path))
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{
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path.clear();
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path.append(original_path.begin(), original_path.end());
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}
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}
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FileSpec::FileSpec() :
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m_directory(),
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m_filename(),
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m_syntax(FileSystem::GetNativePathSyntax())
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{
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}
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//------------------------------------------------------------------
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// Default constructor that can take an optional full path to a
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// file on disk.
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//------------------------------------------------------------------
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FileSpec::FileSpec(const char *pathname, bool resolve_path, PathSyntax syntax) :
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m_directory(),
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m_filename(),
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m_is_resolved(false),
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m_syntax(syntax)
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{
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if (pathname && pathname[0])
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SetFile(pathname, resolve_path, syntax);
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}
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FileSpec::FileSpec(const char *pathname, bool resolve_path, ArchSpec arch) :
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FileSpec{pathname, resolve_path, arch.GetTriple().isOSWindows() ? ePathSyntaxWindows : ePathSyntaxPosix}
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{
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}
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FileSpec::FileSpec(const std::string &path, bool resolve_path, PathSyntax syntax) :
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FileSpec{path.c_str(), resolve_path, syntax}
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{
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}
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FileSpec::FileSpec(const std::string &path, bool resolve_path, ArchSpec arch) :
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FileSpec{path.c_str(), resolve_path, arch}
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{
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}
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//------------------------------------------------------------------
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// Copy constructor
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//------------------------------------------------------------------
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FileSpec::FileSpec(const FileSpec& rhs) :
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m_directory (rhs.m_directory),
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m_filename (rhs.m_filename),
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m_is_resolved (rhs.m_is_resolved),
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m_syntax (rhs.m_syntax)
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{
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}
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//------------------------------------------------------------------
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// Copy constructor
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//------------------------------------------------------------------
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FileSpec::FileSpec(const FileSpec* rhs) :
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m_directory(),
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m_filename()
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{
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if (rhs)
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*this = *rhs;
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}
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//------------------------------------------------------------------
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// Virtual destructor in case anyone inherits from this class.
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//------------------------------------------------------------------
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FileSpec::~FileSpec()
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{
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}
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//------------------------------------------------------------------
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// Assignment operator.
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//------------------------------------------------------------------
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const FileSpec&
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FileSpec::operator= (const FileSpec& rhs)
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{
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if (this != &rhs)
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{
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m_directory = rhs.m_directory;
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m_filename = rhs.m_filename;
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m_is_resolved = rhs.m_is_resolved;
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m_syntax = rhs.m_syntax;
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}
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return *this;
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}
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//------------------------------------------------------------------
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// Update the contents of this object with a new path. The path will
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// be split up into a directory and filename and stored as uniqued
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// string values for quick comparison and efficient memory usage.
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//------------------------------------------------------------------
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void
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FileSpec::SetFile (const char *pathname, bool resolve, PathSyntax syntax)
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{
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m_filename.Clear();
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m_directory.Clear();
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m_is_resolved = false;
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m_syntax = (syntax == ePathSyntaxHostNative) ? FileSystem::GetNativePathSyntax() : syntax;
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if (pathname == NULL || pathname[0] == '\0')
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return;
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llvm::SmallString<64> resolved(pathname);
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if (resolve)
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{
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FileSpec::Resolve (resolved);
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m_is_resolved = true;
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}
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Normalize(resolved, syntax);
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llvm::StringRef resolve_path_ref(resolved.c_str());
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size_t dir_end = ParentPathEnd(resolve_path_ref, syntax);
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if (dir_end == 0)
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{
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m_filename.SetString(resolve_path_ref);
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return;
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}
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m_directory.SetString(resolve_path_ref.substr(0, dir_end));
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size_t filename_begin = dir_end;
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size_t root_dir_start = RootDirStart(resolve_path_ref, syntax);
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while (filename_begin != llvm::StringRef::npos && filename_begin < resolve_path_ref.size() &&
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filename_begin != root_dir_start && IsPathSeparator(resolve_path_ref[filename_begin], syntax))
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++filename_begin;
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m_filename.SetString((filename_begin == llvm::StringRef::npos || filename_begin >= resolve_path_ref.size())
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? "."
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: resolve_path_ref.substr(filename_begin));
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}
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void
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FileSpec::SetFile(const char *pathname, bool resolve, ArchSpec arch)
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{
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return SetFile(pathname, resolve,
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arch.GetTriple().isOSWindows()
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? ePathSyntaxWindows
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: ePathSyntaxPosix);
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}
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void
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FileSpec::SetFile(const std::string &pathname, bool resolve, PathSyntax syntax)
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{
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return SetFile(pathname.c_str(), resolve, syntax);
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}
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void
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FileSpec::SetFile(const std::string &pathname, bool resolve, ArchSpec arch)
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{
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return SetFile(pathname.c_str(), resolve, arch);
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}
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//----------------------------------------------------------------------
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// Convert to pointer operator. This allows code to check any FileSpec
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// objects to see if they contain anything valid using code such as:
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//
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// if (file_spec)
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// {}
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//----------------------------------------------------------------------
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FileSpec::operator bool() const
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{
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return m_filename || m_directory;
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}
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//----------------------------------------------------------------------
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// Logical NOT operator. This allows code to check any FileSpec
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// objects to see if they are invalid using code such as:
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//
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// if (!file_spec)
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// {}
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//----------------------------------------------------------------------
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bool
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FileSpec::operator!() const
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{
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return !m_directory && !m_filename;
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}
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bool
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FileSpec::DirectoryEquals(const FileSpec &rhs) const
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{
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const bool case_sensitive = IsCaseSensitive() || rhs.IsCaseSensitive();
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return ConstString::Equals(m_directory, rhs.m_directory, case_sensitive);
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}
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bool
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FileSpec::FileEquals(const FileSpec &rhs) const
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{
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const bool case_sensitive = IsCaseSensitive() || rhs.IsCaseSensitive();
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return ConstString::Equals(m_filename, rhs.m_filename, case_sensitive);
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}
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//------------------------------------------------------------------
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// Equal to operator
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//------------------------------------------------------------------
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bool
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FileSpec::operator== (const FileSpec& rhs) const
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{
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if (!FileEquals(rhs))
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return false;
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if (DirectoryEquals(rhs))
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return true;
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// TODO: determine if we want to keep this code in here.
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// The code below was added to handle a case where we were
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// trying to set a file and line breakpoint and one path
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// was resolved, and the other not and the directory was
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// in a mount point that resolved to a more complete path:
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// "/tmp/a.c" == "/private/tmp/a.c". I might end up pulling
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// this out...
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if (IsResolved() && rhs.IsResolved())
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{
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// Both paths are resolved, no need to look further...
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return false;
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}
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FileSpec resolved_lhs(*this);
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// If "this" isn't resolved, resolve it
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if (!IsResolved())
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{
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if (resolved_lhs.ResolvePath())
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{
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// This path wasn't resolved but now it is. Check if the resolved
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|
// directory is the same as our unresolved directory, and if so,
|
|
// we can mark this object as resolved to avoid more future resolves
|
|
m_is_resolved = (m_directory == resolved_lhs.m_directory);
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
FileSpec resolved_rhs(rhs);
|
|
if (!rhs.IsResolved())
|
|
{
|
|
if (resolved_rhs.ResolvePath())
|
|
{
|
|
// rhs's path wasn't resolved but now it is. Check if the resolved
|
|
// directory is the same as rhs's unresolved directory, and if so,
|
|
// we can mark this object as resolved to avoid more future resolves
|
|
rhs.m_is_resolved = (rhs.m_directory == resolved_rhs.m_directory);
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
// If we reach this point in the code we were able to resolve both paths
|
|
// and since we only resolve the paths if the basenames are equal, then
|
|
// we can just check if both directories are equal...
|
|
return DirectoryEquals(rhs);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Not equal to operator
|
|
//------------------------------------------------------------------
|
|
bool
|
|
FileSpec::operator!= (const FileSpec& rhs) const
|
|
{
|
|
return !(*this == rhs);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Less than operator
|
|
//------------------------------------------------------------------
|
|
bool
|
|
FileSpec::operator< (const FileSpec& rhs) const
|
|
{
|
|
return FileSpec::Compare(*this, rhs, true) < 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Dump a FileSpec object to a stream
|
|
//------------------------------------------------------------------
|
|
Stream&
|
|
lldb_private::operator << (Stream &s, const FileSpec& f)
|
|
{
|
|
f.Dump(&s);
|
|
return s;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Clear this object by releasing both the directory and filename
|
|
// string values and making them both the empty string.
|
|
//------------------------------------------------------------------
|
|
void
|
|
FileSpec::Clear()
|
|
{
|
|
m_directory.Clear();
|
|
m_filename.Clear();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Compare two FileSpec objects. If "full" is true, then both
|
|
// the directory and the filename must match. If "full" is false,
|
|
// then the directory names for "a" and "b" are only compared if
|
|
// they are both non-empty. This allows a FileSpec object to only
|
|
// contain a filename and it can match FileSpec objects that have
|
|
// matching filenames with different paths.
|
|
//
|
|
// Return -1 if the "a" is less than "b", 0 if "a" is equal to "b"
|
|
// and "1" if "a" is greater than "b".
|
|
//------------------------------------------------------------------
|
|
int
|
|
FileSpec::Compare(const FileSpec& a, const FileSpec& b, bool full)
|
|
{
|
|
int result = 0;
|
|
|
|
// case sensitivity of compare
|
|
const bool case_sensitive = a.IsCaseSensitive() || b.IsCaseSensitive();
|
|
|
|
// If full is true, then we must compare both the directory and filename.
|
|
|
|
// If full is false, then if either directory is empty, then we match on
|
|
// the basename only, and if both directories have valid values, we still
|
|
// do a full compare. This allows for matching when we just have a filename
|
|
// in one of the FileSpec objects.
|
|
|
|
if (full || (a.m_directory && b.m_directory))
|
|
{
|
|
result = ConstString::Compare(a.m_directory, b.m_directory, case_sensitive);
|
|
if (result)
|
|
return result;
|
|
}
|
|
return ConstString::Compare(a.m_filename, b.m_filename, case_sensitive);
|
|
}
|
|
|
|
bool
|
|
FileSpec::Equal (const FileSpec& a, const FileSpec& b, bool full, bool remove_backups)
|
|
{
|
|
// case sensitivity of equality test
|
|
const bool case_sensitive = a.IsCaseSensitive() || b.IsCaseSensitive();
|
|
|
|
if (!full && (a.GetDirectory().IsEmpty() || b.GetDirectory().IsEmpty()))
|
|
return ConstString::Equals(a.m_filename, b.m_filename, case_sensitive);
|
|
else if (remove_backups == false)
|
|
return a == b;
|
|
else
|
|
{
|
|
if (!ConstString::Equals(a.m_filename, b.m_filename, case_sensitive))
|
|
return false;
|
|
if (ConstString::Equals(a.m_directory, b.m_directory, case_sensitive))
|
|
return true;
|
|
ConstString a_without_dots;
|
|
ConstString b_without_dots;
|
|
|
|
RemoveBackupDots (a.m_directory, a_without_dots);
|
|
RemoveBackupDots (b.m_directory, b_without_dots);
|
|
return ConstString::Equals(a_without_dots, b_without_dots, case_sensitive);
|
|
}
|
|
}
|
|
|
|
void
|
|
FileSpec::NormalizePath ()
|
|
{
|
|
ConstString normalized_directory;
|
|
FileSpec::RemoveBackupDots(m_directory, normalized_directory);
|
|
m_directory = normalized_directory;
|
|
}
|
|
|
|
void
|
|
FileSpec::RemoveBackupDots (const ConstString &input_const_str, ConstString &result_const_str)
|
|
{
|
|
const char *input = input_const_str.GetCString();
|
|
result_const_str.Clear();
|
|
if (!input || input[0] == '\0')
|
|
return;
|
|
|
|
const char win_sep = '\\';
|
|
const char unix_sep = '/';
|
|
char found_sep;
|
|
const char *win_backup = "\\..";
|
|
const char *unix_backup = "/..";
|
|
|
|
bool is_win = false;
|
|
|
|
// Determine the platform for the path (win or unix):
|
|
|
|
if (input[0] == win_sep)
|
|
is_win = true;
|
|
else if (input[0] == unix_sep)
|
|
is_win = false;
|
|
else if (input[1] == ':')
|
|
is_win = true;
|
|
else if (strchr(input, unix_sep) != nullptr)
|
|
is_win = false;
|
|
else if (strchr(input, win_sep) != nullptr)
|
|
is_win = true;
|
|
else
|
|
{
|
|
// No separators at all, no reason to do any work here.
|
|
result_const_str = input_const_str;
|
|
return;
|
|
}
|
|
|
|
llvm::StringRef backup_sep;
|
|
if (is_win)
|
|
{
|
|
found_sep = win_sep;
|
|
backup_sep = win_backup;
|
|
}
|
|
else
|
|
{
|
|
found_sep = unix_sep;
|
|
backup_sep = unix_backup;
|
|
}
|
|
|
|
llvm::StringRef input_ref(input);
|
|
llvm::StringRef curpos(input);
|
|
|
|
bool had_dots = false;
|
|
std::string result;
|
|
|
|
while (1)
|
|
{
|
|
// Start of loop
|
|
llvm::StringRef before_sep;
|
|
std::pair<llvm::StringRef, llvm::StringRef> around_sep = curpos.split(backup_sep);
|
|
|
|
before_sep = around_sep.first;
|
|
curpos = around_sep.second;
|
|
|
|
if (curpos.empty())
|
|
{
|
|
if (had_dots)
|
|
{
|
|
while (before_sep.startswith("//"))
|
|
before_sep = before_sep.substr(1);
|
|
if (!before_sep.empty())
|
|
{
|
|
result.append(before_sep.data(), before_sep.size());
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
had_dots = true;
|
|
|
|
unsigned num_backups = 1;
|
|
while (curpos.startswith(backup_sep))
|
|
{
|
|
num_backups++;
|
|
curpos = curpos.slice(backup_sep.size(), curpos.size());
|
|
}
|
|
|
|
size_t end_pos = before_sep.size();
|
|
while (num_backups-- > 0)
|
|
{
|
|
end_pos = before_sep.rfind(found_sep, end_pos);
|
|
if (end_pos == llvm::StringRef::npos)
|
|
{
|
|
result_const_str = input_const_str;
|
|
return;
|
|
}
|
|
}
|
|
result.append(before_sep.data(), end_pos);
|
|
}
|
|
|
|
if (had_dots)
|
|
result_const_str.SetCString(result.c_str());
|
|
else
|
|
result_const_str = input_const_str;
|
|
|
|
return;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Dump the object to the supplied stream. If the object contains
|
|
// a valid directory name, it will be displayed followed by a
|
|
// directory delimiter, and the filename.
|
|
//------------------------------------------------------------------
|
|
void
|
|
FileSpec::Dump(Stream *s) const
|
|
{
|
|
if (s)
|
|
{
|
|
std::string path{GetPath(true)};
|
|
s->PutCString(path.c_str());
|
|
char path_separator = GetPrefferedPathSeparator(m_syntax);
|
|
if (!m_filename && !path.empty() && path.back() != path_separator)
|
|
s->PutChar(path_separator);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Returns true if the file exists.
|
|
//------------------------------------------------------------------
|
|
bool
|
|
FileSpec::Exists () const
|
|
{
|
|
struct stat file_stats;
|
|
return GetFileStats (this, &file_stats);
|
|
}
|
|
|
|
bool
|
|
FileSpec::Readable () const
|
|
{
|
|
const uint32_t permissions = GetPermissions();
|
|
if (permissions & eFilePermissionsEveryoneR)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
FileSpec::ResolveExecutableLocation ()
|
|
{
|
|
if (!m_directory)
|
|
{
|
|
const char *file_cstr = m_filename.GetCString();
|
|
if (file_cstr)
|
|
{
|
|
const std::string file_str (file_cstr);
|
|
llvm::ErrorOr<std::string> error_or_path = llvm::sys::findProgramByName (file_str);
|
|
if (!error_or_path)
|
|
return false;
|
|
std::string path = error_or_path.get();
|
|
llvm::StringRef dir_ref = llvm::sys::path::parent_path(path);
|
|
if (!dir_ref.empty())
|
|
{
|
|
// FindProgramByName returns "." if it can't find the file.
|
|
if (strcmp (".", dir_ref.data()) == 0)
|
|
return false;
|
|
|
|
m_directory.SetCString (dir_ref.data());
|
|
if (Exists())
|
|
return true;
|
|
else
|
|
{
|
|
// If FindProgramByName found the file, it returns the directory + filename in its return results.
|
|
// We need to separate them.
|
|
FileSpec tmp_file (dir_ref.data(), false);
|
|
if (tmp_file.Exists())
|
|
{
|
|
m_directory = tmp_file.m_directory;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
FileSpec::ResolvePath ()
|
|
{
|
|
if (m_is_resolved)
|
|
return true; // We have already resolved this path
|
|
|
|
char path_buf[PATH_MAX];
|
|
if (!GetPath (path_buf, PATH_MAX, false))
|
|
return false;
|
|
// SetFile(...) will set m_is_resolved correctly if it can resolve the path
|
|
SetFile (path_buf, true);
|
|
return m_is_resolved;
|
|
}
|
|
|
|
uint64_t
|
|
FileSpec::GetByteSize() const
|
|
{
|
|
struct stat file_stats;
|
|
if (GetFileStats (this, &file_stats))
|
|
return file_stats.st_size;
|
|
return 0;
|
|
}
|
|
|
|
FileSpec::PathSyntax
|
|
FileSpec::GetPathSyntax() const
|
|
{
|
|
return m_syntax;
|
|
}
|
|
|
|
FileSpec::FileType
|
|
FileSpec::GetFileType () const
|
|
{
|
|
struct stat file_stats;
|
|
if (GetFileStats (this, &file_stats))
|
|
{
|
|
mode_t file_type = file_stats.st_mode & S_IFMT;
|
|
switch (file_type)
|
|
{
|
|
case S_IFDIR: return eFileTypeDirectory;
|
|
case S_IFREG: return eFileTypeRegular;
|
|
#ifndef _WIN32
|
|
case S_IFIFO: return eFileTypePipe;
|
|
case S_IFSOCK: return eFileTypeSocket;
|
|
case S_IFLNK: return eFileTypeSymbolicLink;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
return eFileTypeUnknown;
|
|
}
|
|
return eFileTypeInvalid;
|
|
}
|
|
|
|
bool
|
|
FileSpec::IsSymbolicLink () const
|
|
{
|
|
char resolved_path[PATH_MAX];
|
|
if (!GetPath (resolved_path, sizeof (resolved_path)))
|
|
return false;
|
|
|
|
#ifdef _WIN32
|
|
std::wstring wpath;
|
|
if (!llvm::ConvertUTF8toWide(resolved_path, wpath))
|
|
return false;
|
|
auto attrs = ::GetFileAttributesW(wpath.c_str());
|
|
if (attrs == INVALID_FILE_ATTRIBUTES)
|
|
return false;
|
|
|
|
return (attrs & FILE_ATTRIBUTE_REPARSE_POINT);
|
|
#else
|
|
struct stat file_stats;
|
|
if (::lstat (resolved_path, &file_stats) != 0)
|
|
return false;
|
|
|
|
return (file_stats.st_mode & S_IFMT) == S_IFLNK;
|
|
#endif
|
|
}
|
|
|
|
uint32_t
|
|
FileSpec::GetPermissions () const
|
|
{
|
|
uint32_t file_permissions = 0;
|
|
if (*this)
|
|
FileSystem::GetFilePermissions(*this, file_permissions);
|
|
return file_permissions;
|
|
}
|
|
|
|
TimeValue
|
|
FileSpec::GetModificationTime () const
|
|
{
|
|
TimeValue mod_time;
|
|
struct stat file_stats;
|
|
if (GetFileStats (this, &file_stats))
|
|
mod_time.OffsetWithSeconds(file_stats.st_mtime);
|
|
return mod_time;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Directory string get accessor.
|
|
//------------------------------------------------------------------
|
|
ConstString &
|
|
FileSpec::GetDirectory()
|
|
{
|
|
return m_directory;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Directory string const get accessor.
|
|
//------------------------------------------------------------------
|
|
const ConstString &
|
|
FileSpec::GetDirectory() const
|
|
{
|
|
return m_directory;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Filename string get accessor.
|
|
//------------------------------------------------------------------
|
|
ConstString &
|
|
FileSpec::GetFilename()
|
|
{
|
|
return m_filename;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Filename string const get accessor.
|
|
//------------------------------------------------------------------
|
|
const ConstString &
|
|
FileSpec::GetFilename() const
|
|
{
|
|
return m_filename;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Extract the directory and path into a fixed buffer. This is
|
|
// needed as the directory and path are stored in separate string
|
|
// values.
|
|
//------------------------------------------------------------------
|
|
size_t
|
|
FileSpec::GetPath(char *path, size_t path_max_len, bool denormalize) const
|
|
{
|
|
if (!path)
|
|
return 0;
|
|
|
|
std::string result = GetPath(denormalize);
|
|
::snprintf(path, path_max_len, "%s", result.c_str());
|
|
return std::min(path_max_len-1, result.length());
|
|
}
|
|
|
|
std::string
|
|
FileSpec::GetPath(bool denormalize) const
|
|
{
|
|
llvm::SmallString<64> result;
|
|
GetPath(result, denormalize);
|
|
return std::string(result.begin(), result.end());
|
|
}
|
|
|
|
const char *
|
|
FileSpec::GetCString(bool denormalize) const
|
|
{
|
|
return ConstString{GetPath(denormalize)}.AsCString(NULL);
|
|
}
|
|
|
|
void
|
|
FileSpec::GetPath(llvm::SmallVectorImpl<char> &path, bool denormalize) const
|
|
{
|
|
path.append(m_directory.GetStringRef().begin(), m_directory.GetStringRef().end());
|
|
if (m_directory && m_filename && !IsPathSeparator(m_directory.GetStringRef().back(), m_syntax))
|
|
path.insert(path.end(), GetPrefferedPathSeparator(m_syntax));
|
|
path.append(m_filename.GetStringRef().begin(), m_filename.GetStringRef().end());
|
|
Normalize(path, m_syntax);
|
|
if (denormalize && !path.empty())
|
|
Denormalize(path, m_syntax);
|
|
}
|
|
|
|
ConstString
|
|
FileSpec::GetFileNameExtension () const
|
|
{
|
|
if (m_filename)
|
|
{
|
|
const char *filename = m_filename.GetCString();
|
|
const char* dot_pos = strrchr(filename, '.');
|
|
if (dot_pos && dot_pos[1] != '\0')
|
|
return ConstString(dot_pos+1);
|
|
}
|
|
return ConstString();
|
|
}
|
|
|
|
ConstString
|
|
FileSpec::GetFileNameStrippingExtension () const
|
|
{
|
|
const char *filename = m_filename.GetCString();
|
|
if (filename == NULL)
|
|
return ConstString();
|
|
|
|
const char* dot_pos = strrchr(filename, '.');
|
|
if (dot_pos == NULL)
|
|
return m_filename;
|
|
|
|
return ConstString(filename, dot_pos-filename);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Returns a shared pointer to a data buffer that contains all or
|
|
// part of the contents of a file. The data is memory mapped and
|
|
// will lazily page in data from the file as memory is accessed.
|
|
// The data that is mapped will start "file_offset" bytes into the
|
|
// file, and "file_size" bytes will be mapped. If "file_size" is
|
|
// greater than the number of bytes available in the file starting
|
|
// at "file_offset", the number of bytes will be appropriately
|
|
// truncated. The final number of bytes that get mapped can be
|
|
// verified using the DataBuffer::GetByteSize() function.
|
|
//------------------------------------------------------------------
|
|
DataBufferSP
|
|
FileSpec::MemoryMapFileContents(off_t file_offset, size_t file_size) const
|
|
{
|
|
DataBufferSP data_sp;
|
|
std::unique_ptr<DataBufferMemoryMap> mmap_data(new DataBufferMemoryMap());
|
|
if (mmap_data.get())
|
|
{
|
|
const size_t mapped_length = mmap_data->MemoryMapFromFileSpec (this, file_offset, file_size);
|
|
if (((file_size == SIZE_MAX) && (mapped_length > 0)) || (mapped_length >= file_size))
|
|
data_sp.reset(mmap_data.release());
|
|
}
|
|
return data_sp;
|
|
}
|
|
|
|
DataBufferSP
|
|
FileSpec::MemoryMapFileContentsIfLocal(off_t file_offset, size_t file_size) const
|
|
{
|
|
if (FileSystem::IsLocal(*this))
|
|
return MemoryMapFileContents(file_offset, file_size);
|
|
else
|
|
return ReadFileContents(file_offset, file_size, NULL);
|
|
}
|
|
|
|
|
|
//------------------------------------------------------------------
|
|
// Return the size in bytes that this object takes in memory. This
|
|
// returns the size in bytes of this object, not any shared string
|
|
// values it may refer to.
|
|
//------------------------------------------------------------------
|
|
size_t
|
|
FileSpec::MemorySize() const
|
|
{
|
|
return m_filename.MemorySize() + m_directory.MemorySize();
|
|
}
|
|
|
|
|
|
size_t
|
|
FileSpec::ReadFileContents (off_t file_offset, void *dst, size_t dst_len, Error *error_ptr) const
|
|
{
|
|
Error error;
|
|
size_t bytes_read = 0;
|
|
char resolved_path[PATH_MAX];
|
|
if (GetPath(resolved_path, sizeof(resolved_path)))
|
|
{
|
|
File file;
|
|
error = file.Open(resolved_path, File::eOpenOptionRead);
|
|
if (error.Success())
|
|
{
|
|
off_t file_offset_after_seek = file_offset;
|
|
bytes_read = dst_len;
|
|
error = file.Read(dst, bytes_read, file_offset_after_seek);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString("invalid file specification");
|
|
}
|
|
if (error_ptr)
|
|
*error_ptr = error;
|
|
return bytes_read;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Returns a shared pointer to a data buffer that contains all or
|
|
// part of the contents of a file. The data copies into a heap based
|
|
// buffer that lives in the DataBuffer shared pointer object returned.
|
|
// The data that is cached will start "file_offset" bytes into the
|
|
// file, and "file_size" bytes will be mapped. If "file_size" is
|
|
// greater than the number of bytes available in the file starting
|
|
// at "file_offset", the number of bytes will be appropriately
|
|
// truncated. The final number of bytes that get mapped can be
|
|
// verified using the DataBuffer::GetByteSize() function.
|
|
//------------------------------------------------------------------
|
|
DataBufferSP
|
|
FileSpec::ReadFileContents (off_t file_offset, size_t file_size, Error *error_ptr) const
|
|
{
|
|
Error error;
|
|
DataBufferSP data_sp;
|
|
char resolved_path[PATH_MAX];
|
|
if (GetPath(resolved_path, sizeof(resolved_path)))
|
|
{
|
|
File file;
|
|
error = file.Open(resolved_path, File::eOpenOptionRead);
|
|
if (error.Success())
|
|
{
|
|
const bool null_terminate = false;
|
|
error = file.Read (file_size, file_offset, null_terminate, data_sp);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString("invalid file specification");
|
|
}
|
|
if (error_ptr)
|
|
*error_ptr = error;
|
|
return data_sp;
|
|
}
|
|
|
|
DataBufferSP
|
|
FileSpec::ReadFileContentsAsCString(Error *error_ptr)
|
|
{
|
|
Error error;
|
|
DataBufferSP data_sp;
|
|
char resolved_path[PATH_MAX];
|
|
if (GetPath(resolved_path, sizeof(resolved_path)))
|
|
{
|
|
File file;
|
|
error = file.Open(resolved_path, File::eOpenOptionRead);
|
|
if (error.Success())
|
|
{
|
|
off_t offset = 0;
|
|
size_t length = SIZE_MAX;
|
|
const bool null_terminate = true;
|
|
error = file.Read (length, offset, null_terminate, data_sp);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString("invalid file specification");
|
|
}
|
|
if (error_ptr)
|
|
*error_ptr = error;
|
|
return data_sp;
|
|
}
|
|
|
|
size_t
|
|
FileSpec::ReadFileLines (STLStringArray &lines)
|
|
{
|
|
lines.clear();
|
|
char path[PATH_MAX];
|
|
if (GetPath(path, sizeof(path)))
|
|
{
|
|
std::ifstream file_stream (path);
|
|
|
|
if (file_stream)
|
|
{
|
|
std::string line;
|
|
while (getline (file_stream, line))
|
|
lines.push_back (line);
|
|
}
|
|
}
|
|
return lines.size();
|
|
}
|
|
|
|
FileSpec::EnumerateDirectoryResult
|
|
FileSpec::ForEachItemInDirectory (const char *dir_path, DirectoryCallback const &callback)
|
|
{
|
|
if (dir_path && dir_path[0])
|
|
{
|
|
#ifdef _WIN32
|
|
std::string szDir(dir_path);
|
|
szDir += "\\*";
|
|
|
|
std::wstring wszDir;
|
|
if (!llvm::ConvertUTF8toWide(szDir, wszDir))
|
|
{
|
|
return eEnumerateDirectoryResultNext;
|
|
}
|
|
|
|
WIN32_FIND_DATAW ffd;
|
|
HANDLE hFind = FindFirstFileW(wszDir.c_str(), &ffd);
|
|
|
|
if (hFind == INVALID_HANDLE_VALUE)
|
|
{
|
|
return eEnumerateDirectoryResultNext;
|
|
}
|
|
|
|
do
|
|
{
|
|
FileSpec::FileType file_type = eFileTypeUnknown;
|
|
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
|
|
{
|
|
size_t len = wcslen(ffd.cFileName);
|
|
|
|
if (len == 1 && ffd.cFileName[0] == L'.')
|
|
continue;
|
|
|
|
if (len == 2 && ffd.cFileName[0] == L'.' && ffd.cFileName[1] == L'.')
|
|
continue;
|
|
|
|
file_type = eFileTypeDirectory;
|
|
}
|
|
else if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DEVICE)
|
|
{
|
|
file_type = eFileTypeOther;
|
|
}
|
|
else
|
|
{
|
|
file_type = eFileTypeRegular;
|
|
}
|
|
|
|
std::string fileName;
|
|
if (!llvm::convertWideToUTF8(ffd.cFileName, fileName))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
std::vector<char> child_path(PATH_MAX);
|
|
const int child_path_len =
|
|
::snprintf(child_path.data(), child_path.size(), "%s\\%s", dir_path, fileName.c_str());
|
|
if (child_path_len < (int)(child_path.size() - 1))
|
|
{
|
|
// Don't resolve the file type or path
|
|
FileSpec child_path_spec(child_path.data(), false);
|
|
|
|
EnumerateDirectoryResult result = callback (file_type, child_path_spec);
|
|
|
|
switch (result)
|
|
{
|
|
case eEnumerateDirectoryResultNext:
|
|
// Enumerate next entry in the current directory. We just
|
|
// exit this switch and will continue enumerating the
|
|
// current directory as we currently are...
|
|
break;
|
|
|
|
case eEnumerateDirectoryResultEnter: // Recurse into the current entry if it is a directory or symlink, or next if not
|
|
if (FileSpec::ForEachItemInDirectory(child_path.data(), callback) ==
|
|
eEnumerateDirectoryResultQuit)
|
|
{
|
|
// The subdirectory returned Quit, which means to
|
|
// stop all directory enumerations at all levels.
|
|
return eEnumerateDirectoryResultQuit;
|
|
}
|
|
break;
|
|
|
|
case eEnumerateDirectoryResultExit: // Exit from the current directory at the current level.
|
|
// Exit from this directory level and tell parent to
|
|
// keep enumerating.
|
|
return eEnumerateDirectoryResultNext;
|
|
|
|
case eEnumerateDirectoryResultQuit: // Stop directory enumerations at any level
|
|
return eEnumerateDirectoryResultQuit;
|
|
}
|
|
}
|
|
} while (FindNextFileW(hFind, &ffd) != 0);
|
|
|
|
FindClose(hFind);
|
|
#else
|
|
lldb_utility::CleanUp <DIR *, int> dir_path_dir(opendir(dir_path), NULL, closedir);
|
|
if (dir_path_dir.is_valid())
|
|
{
|
|
char dir_path_last_char = dir_path[strlen(dir_path) - 1];
|
|
|
|
long path_max = fpathconf (dirfd (dir_path_dir.get()), _PC_NAME_MAX);
|
|
#if defined (__APPLE_) && defined (__DARWIN_MAXPATHLEN)
|
|
if (path_max < __DARWIN_MAXPATHLEN)
|
|
path_max = __DARWIN_MAXPATHLEN;
|
|
#endif
|
|
struct dirent *buf, *dp;
|
|
buf = (struct dirent *) malloc (offsetof (struct dirent, d_name) + path_max + 1);
|
|
|
|
while (buf && readdir_r(dir_path_dir.get(), buf, &dp) == 0 && dp)
|
|
{
|
|
// Only search directories
|
|
if (dp->d_type == DT_DIR || dp->d_type == DT_UNKNOWN)
|
|
{
|
|
size_t len = strlen(dp->d_name);
|
|
|
|
if (len == 1 && dp->d_name[0] == '.')
|
|
continue;
|
|
|
|
if (len == 2 && dp->d_name[0] == '.' && dp->d_name[1] == '.')
|
|
continue;
|
|
}
|
|
|
|
FileSpec::FileType file_type = eFileTypeUnknown;
|
|
|
|
switch (dp->d_type)
|
|
{
|
|
default:
|
|
case DT_UNKNOWN: file_type = eFileTypeUnknown; break;
|
|
case DT_FIFO: file_type = eFileTypePipe; break;
|
|
case DT_CHR: file_type = eFileTypeOther; break;
|
|
case DT_DIR: file_type = eFileTypeDirectory; break;
|
|
case DT_BLK: file_type = eFileTypeOther; break;
|
|
case DT_REG: file_type = eFileTypeRegular; break;
|
|
case DT_LNK: file_type = eFileTypeSymbolicLink; break;
|
|
case DT_SOCK: file_type = eFileTypeSocket; break;
|
|
#if !defined(__OpenBSD__)
|
|
case DT_WHT: file_type = eFileTypeOther; break;
|
|
#endif
|
|
}
|
|
|
|
char child_path[PATH_MAX];
|
|
|
|
// Don't make paths with "/foo//bar", that just confuses everybody.
|
|
int child_path_len;
|
|
if (dir_path_last_char == '/')
|
|
child_path_len = ::snprintf (child_path, sizeof(child_path), "%s%s", dir_path, dp->d_name);
|
|
else
|
|
child_path_len = ::snprintf (child_path, sizeof(child_path), "%s/%s", dir_path, dp->d_name);
|
|
|
|
if (child_path_len < (int)(sizeof(child_path) - 1))
|
|
{
|
|
// Don't resolve the file type or path
|
|
FileSpec child_path_spec (child_path, false);
|
|
|
|
EnumerateDirectoryResult result = callback (file_type, child_path_spec);
|
|
|
|
switch (result)
|
|
{
|
|
case eEnumerateDirectoryResultNext:
|
|
// Enumerate next entry in the current directory. We just
|
|
// exit this switch and will continue enumerating the
|
|
// current directory as we currently are...
|
|
break;
|
|
|
|
case eEnumerateDirectoryResultEnter: // Recurse into the current entry if it is a directory or symlink, or next if not
|
|
if (FileSpec::ForEachItemInDirectory (child_path, callback) == eEnumerateDirectoryResultQuit)
|
|
{
|
|
// The subdirectory returned Quit, which means to
|
|
// stop all directory enumerations at all levels.
|
|
if (buf)
|
|
free (buf);
|
|
return eEnumerateDirectoryResultQuit;
|
|
}
|
|
break;
|
|
|
|
case eEnumerateDirectoryResultExit: // Exit from the current directory at the current level.
|
|
// Exit from this directory level and tell parent to
|
|
// keep enumerating.
|
|
if (buf)
|
|
free (buf);
|
|
return eEnumerateDirectoryResultNext;
|
|
|
|
case eEnumerateDirectoryResultQuit: // Stop directory enumerations at any level
|
|
if (buf)
|
|
free (buf);
|
|
return eEnumerateDirectoryResultQuit;
|
|
}
|
|
}
|
|
}
|
|
if (buf)
|
|
{
|
|
free (buf);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
// By default when exiting a directory, we tell the parent enumeration
|
|
// to continue enumerating.
|
|
return eEnumerateDirectoryResultNext;
|
|
}
|
|
|
|
FileSpec::EnumerateDirectoryResult
|
|
FileSpec::EnumerateDirectory
|
|
(
|
|
const char *dir_path,
|
|
bool find_directories,
|
|
bool find_files,
|
|
bool find_other,
|
|
EnumerateDirectoryCallbackType callback,
|
|
void *callback_baton
|
|
)
|
|
{
|
|
return ForEachItemInDirectory(dir_path,
|
|
[&find_directories, &find_files, &find_other, &callback, &callback_baton]
|
|
(FileType file_type, const FileSpec &file_spec) {
|
|
switch (file_type)
|
|
{
|
|
case FileType::eFileTypeDirectory:
|
|
if (find_directories)
|
|
return callback(callback_baton, file_type, file_spec);
|
|
break;
|
|
case FileType::eFileTypeRegular:
|
|
if (find_files)
|
|
return callback(callback_baton, file_type, file_spec);
|
|
break;
|
|
default:
|
|
if (find_other)
|
|
return callback(callback_baton, file_type, file_spec);
|
|
break;
|
|
}
|
|
return eEnumerateDirectoryResultNext;
|
|
});
|
|
}
|
|
|
|
FileSpec
|
|
FileSpec::CopyByAppendingPathComponent (const char *new_path) const
|
|
{
|
|
FileSpec ret = *this;
|
|
ret.AppendPathComponent(new_path);
|
|
return ret;
|
|
}
|
|
|
|
FileSpec
|
|
FileSpec::CopyByRemovingLastPathComponent () const
|
|
{
|
|
const bool resolve = false;
|
|
if (m_filename.IsEmpty() && m_directory.IsEmpty())
|
|
return FileSpec("",resolve);
|
|
if (m_directory.IsEmpty())
|
|
return FileSpec("",resolve);
|
|
if (m_filename.IsEmpty())
|
|
{
|
|
const char* dir_cstr = m_directory.GetCString();
|
|
const char* last_slash_ptr = ::strrchr(dir_cstr, '/');
|
|
|
|
// check for obvious cases before doing the full thing
|
|
if (!last_slash_ptr)
|
|
return FileSpec("",resolve);
|
|
if (last_slash_ptr == dir_cstr)
|
|
return FileSpec("/",resolve);
|
|
|
|
size_t last_slash_pos = last_slash_ptr - dir_cstr+1;
|
|
ConstString new_path(dir_cstr,last_slash_pos);
|
|
return FileSpec(new_path.GetCString(),resolve);
|
|
}
|
|
else
|
|
return FileSpec(m_directory.GetCString(),resolve);
|
|
}
|
|
|
|
ConstString
|
|
FileSpec::GetLastPathComponent () const
|
|
{
|
|
if (m_filename)
|
|
return m_filename;
|
|
if (m_directory)
|
|
{
|
|
const char* dir_cstr = m_directory.GetCString();
|
|
const char* last_slash_ptr = ::strrchr(dir_cstr, '/');
|
|
if (last_slash_ptr == NULL)
|
|
return m_directory;
|
|
if (last_slash_ptr == dir_cstr)
|
|
{
|
|
if (last_slash_ptr[1] == 0)
|
|
return ConstString(last_slash_ptr);
|
|
else
|
|
return ConstString(last_slash_ptr+1);
|
|
}
|
|
if (last_slash_ptr[1] != 0)
|
|
return ConstString(last_slash_ptr+1);
|
|
const char* penultimate_slash_ptr = last_slash_ptr;
|
|
while (*penultimate_slash_ptr)
|
|
{
|
|
--penultimate_slash_ptr;
|
|
if (penultimate_slash_ptr == dir_cstr)
|
|
break;
|
|
if (*penultimate_slash_ptr == '/')
|
|
break;
|
|
}
|
|
ConstString result(penultimate_slash_ptr+1,last_slash_ptr-penultimate_slash_ptr);
|
|
return result;
|
|
}
|
|
return ConstString();
|
|
}
|
|
|
|
void
|
|
FileSpec::PrependPathComponent(const char *new_path)
|
|
{
|
|
if (!new_path) return;
|
|
const bool resolve = false;
|
|
if (m_filename.IsEmpty() && m_directory.IsEmpty())
|
|
{
|
|
SetFile(new_path, resolve);
|
|
return;
|
|
}
|
|
StreamString stream;
|
|
if (m_filename.IsEmpty())
|
|
stream.Printf("%s/%s", new_path, m_directory.GetCString());
|
|
else if (m_directory.IsEmpty())
|
|
stream.Printf("%s/%s", new_path, m_filename.GetCString());
|
|
else
|
|
stream.Printf("%s/%s/%s", new_path, m_directory.GetCString(), m_filename.GetCString());
|
|
SetFile(stream.GetData(), resolve);
|
|
}
|
|
|
|
void
|
|
FileSpec::PrependPathComponent(const std::string &new_path)
|
|
{
|
|
return PrependPathComponent(new_path.c_str());
|
|
}
|
|
|
|
void
|
|
FileSpec::PrependPathComponent(const FileSpec &new_path)
|
|
{
|
|
return PrependPathComponent(new_path.GetPath(false));
|
|
}
|
|
|
|
void
|
|
FileSpec::AppendPathComponent(const char *new_path)
|
|
{
|
|
if (!new_path) return;
|
|
|
|
StreamString stream;
|
|
if (!m_directory.IsEmpty())
|
|
{
|
|
stream.PutCString(m_directory.GetCString());
|
|
if (!IsPathSeparator(m_directory.GetStringRef().back(), m_syntax))
|
|
stream.PutChar(GetPrefferedPathSeparator(m_syntax));
|
|
}
|
|
|
|
if (!m_filename.IsEmpty())
|
|
{
|
|
stream.PutCString(m_filename.GetCString());
|
|
if (!IsPathSeparator(m_filename.GetStringRef().back(), m_syntax))
|
|
stream.PutChar(GetPrefferedPathSeparator(m_syntax));
|
|
}
|
|
|
|
stream.PutCString(new_path);
|
|
|
|
const bool resolve = false;
|
|
SetFile(stream.GetData(), resolve, m_syntax);
|
|
}
|
|
|
|
void
|
|
FileSpec::AppendPathComponent(const std::string &new_path)
|
|
{
|
|
return AppendPathComponent(new_path.c_str());
|
|
}
|
|
|
|
void
|
|
FileSpec::AppendPathComponent(const FileSpec &new_path)
|
|
{
|
|
return AppendPathComponent(new_path.GetPath(false));
|
|
}
|
|
|
|
void
|
|
FileSpec::RemoveLastPathComponent ()
|
|
{
|
|
const bool resolve = false;
|
|
if (m_filename.IsEmpty() && m_directory.IsEmpty())
|
|
{
|
|
SetFile("",resolve);
|
|
return;
|
|
}
|
|
if (m_directory.IsEmpty())
|
|
{
|
|
SetFile("",resolve);
|
|
return;
|
|
}
|
|
if (m_filename.IsEmpty())
|
|
{
|
|
const char* dir_cstr = m_directory.GetCString();
|
|
const char* last_slash_ptr = ::strrchr(dir_cstr, '/');
|
|
|
|
// check for obvious cases before doing the full thing
|
|
if (!last_slash_ptr)
|
|
{
|
|
SetFile("",resolve);
|
|
return;
|
|
}
|
|
if (last_slash_ptr == dir_cstr)
|
|
{
|
|
SetFile("/",resolve);
|
|
return;
|
|
}
|
|
size_t last_slash_pos = last_slash_ptr - dir_cstr+1;
|
|
ConstString new_path(dir_cstr,last_slash_pos);
|
|
SetFile(new_path.GetCString(),resolve);
|
|
}
|
|
else
|
|
SetFile(m_directory.GetCString(),resolve);
|
|
}
|
|
//------------------------------------------------------------------
|
|
/// Returns true if the filespec represents an implementation source
|
|
/// file (files with a ".c", ".cpp", ".m", ".mm" (many more)
|
|
/// extension).
|
|
///
|
|
/// @return
|
|
/// \b true if the filespec represents an implementation source
|
|
/// file, \b false otherwise.
|
|
//------------------------------------------------------------------
|
|
bool
|
|
FileSpec::IsSourceImplementationFile () const
|
|
{
|
|
ConstString extension (GetFileNameExtension());
|
|
if (extension)
|
|
{
|
|
static RegularExpression g_source_file_regex ("^([cC]|[mM]|[mM][mM]|[cC][pP][pP]|[cC]\\+\\+|[cC][xX][xX]|[cC][cC]|[cC][pP]|[sS]|[aA][sS][mM]|[fF]|[fF]77|[fF]90|[fF]95|[fF]03|[fF][oO][rR]|[fF][tT][nN]|[fF][pP][pP]|[aA][dD][aA]|[aA][dD][bB]|[aA][dD][sS])$");
|
|
return g_source_file_regex.Execute (extension.GetCString());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
FileSpec::IsRelative() const
|
|
{
|
|
const char *dir = m_directory.GetCString();
|
|
llvm::StringRef directory(dir ? dir : "");
|
|
|
|
if (directory.size() > 0)
|
|
{
|
|
if (PathSyntaxIsPosix(m_syntax))
|
|
{
|
|
// If the path doesn't start with '/' or '~', return true
|
|
switch (directory[0])
|
|
{
|
|
case '/':
|
|
case '~':
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (directory.size() >= 2 && directory[1] == ':')
|
|
return false;
|
|
if (directory[0] == '/')
|
|
return false;
|
|
return true;
|
|
}
|
|
}
|
|
else if (m_filename)
|
|
{
|
|
// No directory, just a basename, return true
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
FileSpec::IsAbsolute() const
|
|
{
|
|
return !FileSpec::IsRelative();
|
|
}
|