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📄 ARMBuildAttributes.h(8.6 KB)
📄 ARMEHABI.h(3.72 KB)
📄 ARMTargetParser.def(18.94 KB)
📄 ARMTargetParser.h(8.76 KB)
📄 ARMWinEH.h(18.27 KB)
📄 AlignOf.h(1.56 KB)
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📄 BinaryByteStream.h(9.14 KB)
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📄 BinaryStreamArray.h(12.46 KB)
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📄 COM.h(1004 B)
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📄 CachePruning.h(3.5 KB)
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📄 Casting.h(13.92 KB)
📄 CheckedArithmetic.h(3.71 KB)
📄 Chrono.h(5.78 KB)
📄 CodeGen.h(1.96 KB)
📄 CodeGenCoverage.h(1.18 KB)
📄 CommandLine.h(71.22 KB)
📄 Compiler.h(19.5 KB)
📄 Compression.h(1.39 KB)
📄 ConvertUTF.h(11.4 KB)
📄 CrashRecoveryContext.h(9.26 KB)
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📄 DataExtractor.h(30.28 KB)
📄 DataTypes.h(775 B)
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📄 DynamicLibrary.h(5.77 KB)
📄 ELFAttributeParser.h(2.22 KB)
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📄 Endian.h(14.28 KB)
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📄 Errc.h(3.8 KB)
📄 Errno.h(1.45 KB)
📄 Error.h(43.82 KB)
📄 ErrorHandling.h(6.39 KB)
📄 ErrorOr.h(7.48 KB)
📄 ExtensibleRTTI.h(4.02 KB)
📄 FileCheck.h(6.69 KB)
📄 FileCollector.h(3.74 KB)
📄 FileOutputBuffer.h(3.36 KB)
📄 FileSystem.h(53.03 KB)
📄 FileUtilities.h(3.83 KB)
📄 Format.h(9.45 KB)
📄 FormatAdapters.h(3.38 KB)
📄 FormatCommon.h(2.05 KB)
📄 FormatProviders.h(15.27 KB)
📄 FormatVariadic.h(9.88 KB)
📄 FormatVariadicDetails.h(5.3 KB)
📄 FormattedStream.h(6.42 KB)
📄 GenericDomTree.h(30.89 KB)
📄 GenericDomTreeConstruction.h(63.42 KB)
📄 GenericIteratedDominanceFrontier.h(7.31 KB)
📄 GlobPattern.h(1.35 KB)
📄 GraphWriter.h(11.79 KB)
📄 Host.h(2.68 KB)
📄 InitLLVM.h(1.79 KB)
📄 ItaniumManglingCanonicalizer.h(3.17 KB)
📄 JSON.h(28.25 KB)
📄 KnownBits.h(8.35 KB)
📄 LEB128.h(5.74 KB)
📄 LineIterator.h(2.62 KB)
📄 Locale.h(223 B)
📄 LockFileManager.h(3.13 KB)
📄 LowLevelTypeImpl.h(11.94 KB)
📄 MD5.h(3.39 KB)
📄 MSVCErrorWorkarounds.h(2.62 KB)
📄 MachineValueType.h(42.37 KB)
📄 ManagedStatic.h(4.21 KB)
📄 MathExtras.h(32.81 KB)
📄 MemAlloc.h(3.21 KB)
📄 Memory.h(6.94 KB)
📄 MemoryBuffer.h(10.98 KB)
📄 MipsABIFlags.h(3.92 KB)
📄 Mutex.h(2.14 KB)
📄 NativeFormatting.h(1.64 KB)
📄 OnDiskHashTable.h(21.97 KB)
📄 OptimizedStructLayout.h(5.89 KB)
📄 Parallel.h(5.99 KB)
📄 Path.h(15.6 KB)
📄 PluginLoader.h(1.29 KB)
📄 PointerLikeTypeTraits.h(5.69 KB)
📄 PrettyStackTrace.h(4.45 KB)
📄 Printable.h(1.5 KB)
📄 Process.h(9.31 KB)
📄 Program.h(10.35 KB)
📄 RISCVAttributeParser.h(1.15 KB)
📄 RISCVAttributes.h(1.2 KB)
📄 RISCVTargetParser.def(446 B)
📄 RWMutex.h(5.65 KB)
📄 RandomNumberGenerator.h(2.29 KB)
📄 Recycler.h(3.47 KB)
📄 RecyclingAllocator.h(2.38 KB)
📄 Regex.h(4.37 KB)
📄 Registry.h(5.14 KB)
📄 ReverseIteration.h(360 B)
📄 SHA1.h(2.37 KB)
📄 SMLoc.h(1.78 KB)
📄 SMTAPI.h(16.33 KB)
📄 SaveAndRestore.h(1.02 KB)
📄 ScaledNumber.h(30.65 KB)
📄 ScopedPrinter.h(11.39 KB)
📄 Signals.h(5.22 KB)
📄 Signposts.h(1.29 KB)
📄 SmallVectorMemoryBuffer.h(2.28 KB)
📁 Solaris
📄 SourceMgr.h(10.37 KB)
📄 SpecialCaseList.h(6.01 KB)
📄 StringSaver.h(1.94 KB)
📄 SuffixTree.h(13.15 KB)
📄 SwapByteOrder.h(4.8 KB)
📄 SymbolRemappingReader.h(4.36 KB)
📄 SystemUtils.h(1.02 KB)
📄 TarWriter.h(941 B)
📄 TargetOpcodes.def(22.01 KB)
📄 TargetParser.h(4.08 KB)
📄 TargetRegistry.h(46.87 KB)
📄 TargetSelect.h(6.2 KB)
📄 TaskQueue.h(4.24 KB)
📄 ThreadLocal.h(2.08 KB)
📄 ThreadPool.h(3.44 KB)
📄 Threading.h(10.62 KB)
📄 TimeProfiler.h(3.46 KB)
📄 Timer.h(8.93 KB)
📄 ToolOutputFile.h(2.24 KB)
📄 TrailingObjects.h(15.19 KB)
📄 TrigramIndex.h(2.84 KB)
📄 TypeName.h(2.13 KB)
📄 TypeSize.h(8.53 KB)
📄 Unicode.h(2.5 KB)
📄 UnicodeCharRanges.h(3.27 KB)
📄 Valgrind.h(1.16 KB)
📄 VersionTuple.h(5.22 KB)
📄 VirtualFileSystem.h(28.28 KB)
📄 Watchdog.h(1.15 KB)
📄 Win64EH.h(4.82 KB)
📁 Windows
📄 WindowsError.h(541 B)
📄 WithColor.h(4.64 KB)
📄 X86DisassemblerDecoderCommon.h(29.39 KB)
📄 X86TargetParser.def(8.21 KB)
📄 X86TargetParser.h(3.57 KB)
📄 YAMLParser.h(16.29 KB)
📄 YAMLTraits.h(67.62 KB)
📄 circular_raw_ostream.h(4.97 KB)
📄 raw_os_ostream.h(1.29 KB)
📄 raw_ostream.h(20.82 KB)
📄 raw_sha1_ostream.h(1.29 KB)
📄 thread.h(1.33 KB)
📄 type_traits.h(6.75 KB)
📄 xxhash.h(1.92 KB)

Editing: Path.h

//===- llvm/Support/Path.h - Path Operating System Concept ------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the llvm::sys::path namespace. It is designed after
// TR2/boost filesystem (v3), but modified to remove exception handling and the
// path class.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_PATH_H
#define LLVM_SUPPORT_PATH_H

#include "llvm/ADT/Twine.h"
#include "llvm/ADT/iterator.h"
#include "llvm/Support/DataTypes.h"
#include <iterator>
#include <system_error>

namespace llvm {
namespace sys {
namespace path {

enum class Style { windows, posix, native };

/// @name Lexical Component Iterator
/// @{

/// Path iterator.
///
/// This is an input iterator that iterates over the individual components in
/// \a path. The traversal order is as follows:
/// * The root-name element, if present.
/// * The root-directory element, if present.
/// * Each successive filename element, if present.
/// * Dot, if one or more trailing non-root slash characters are present.
/// Traversing backwards is possible with \a reverse_iterator
///
/// Iteration examples. Each component is separated by ',':
/// @code
///   /          => /
///   /foo       => /,foo
///   foo/       => foo,.
///   /foo/bar   => /,foo,bar
///   ../        => ..,.
///   C:\foo\bar => C:,\,foo,bar
/// @endcode
class const_iterator
    : public iterator_facade_base<const_iterator, std::input_iterator_tag,
                                  const StringRef> {
  StringRef Path;          ///< The entire path.
  StringRef Component;     ///< The current component. Not necessarily in Path.
  size_t    Position = 0;  ///< The iterators current position within Path.
  Style S = Style::native; ///< The path style to use.

// An end iterator has Position = Path.size() + 1.
  friend const_iterator begin(StringRef path, Style style);
  friend const_iterator end(StringRef path);

public:
  reference operator*() const { return Component; }
  const_iterator &operator++();    // preincrement
  bool operator==(const const_iterator &RHS) const;

/// Difference in bytes between this and RHS.
  ptrdiff_t operator-(const const_iterator &RHS) const;
};

/// Reverse path iterator.
///
/// This is an input iterator that iterates over the individual components in
/// \a path in reverse order. The traversal order is exactly reversed from that
/// of \a const_iterator
class reverse_iterator
    : public iterator_facade_base<reverse_iterator, std::input_iterator_tag,
                                  const StringRef> {
  StringRef Path;          ///< The entire path.
  StringRef Component;     ///< The current component. Not necessarily in Path.
  size_t    Position = 0;  ///< The iterators current position within Path.
  Style S = Style::native; ///< The path style to use.

friend reverse_iterator rbegin(StringRef path, Style style);
  friend reverse_iterator rend(StringRef path);

public:
  reference operator*() const { return Component; }
  reverse_iterator &operator++();    // preincrement
  bool operator==(const reverse_iterator &RHS) const;

/// Difference in bytes between this and RHS.
  ptrdiff_t operator-(const reverse_iterator &RHS) const;
};

/// Get begin iterator over \a path.
/// @param path Input path.
/// @returns Iterator initialized with the first component of \a path.
const_iterator begin(StringRef path, Style style = Style::native);

/// Get end iterator over \a path.
/// @param path Input path.
/// @returns Iterator initialized to the end of \a path.
const_iterator end(StringRef path);

/// Get reverse begin iterator over \a path.
/// @param path Input path.
/// @returns Iterator initialized with the first reverse component of \a path.
reverse_iterator rbegin(StringRef path, Style style = Style::native);

/// Get reverse end iterator over \a path.
/// @param path Input path.
/// @returns Iterator initialized to the reverse end of \a path.
reverse_iterator rend(StringRef path);

/// @}
/// @name Lexical Modifiers
/// @{

/// Remove the last component from \a path unless it is the root dir.
///
/// Similar to the POSIX "dirname" utility.
///
/// @code
///   directory/filename.cpp => directory/
///   directory/             => directory
///   filename.cpp           => <empty>
///   /                      => /
/// @endcode
///
/// @param path A path that is modified to not have a file component.
void remove_filename(SmallVectorImpl<char> &path, Style style = Style::native);

/// Replace the file extension of \a path with \a extension.
///
/// @code
///   ./filename.cpp => ./filename.extension
///   ./filename     => ./filename.extension
///   ./             => ./.extension
/// @endcode
///
/// @param path A path that has its extension replaced with \a extension.
/// @param extension The extension to be added. It may be empty. It may also
///                  optionally start with a '.', if it does not, one will be
///                  prepended.
void replace_extension(SmallVectorImpl<char> &path, const Twine &extension,
                       Style style = Style::native);

/// Replace matching path prefix with another path.
///
/// @code
///   /foo, /old, /new => /foo
///   /old, /old, /new => /new
///   /old, /old/, /new => /old
///   /old/foo, /old, /new => /new/foo
///   /old/foo, /old/, /new => /new/foo
///   /old/foo, /old/, /new/ => /new/foo
///   /oldfoo, /old, /new => /oldfoo
///   /foo, <empty>, /new => /new/foo
///   /foo, <empty>, new => new/foo
///   /old/foo, /old, <empty> => /foo
/// @endcode
///
/// @param Path If \a Path starts with \a OldPrefix modify to instead
///        start with \a NewPrefix.
/// @param OldPrefix The path prefix to strip from \a Path.
/// @param NewPrefix The path prefix to replace \a NewPrefix with.
/// @param style The style used to match the prefix. Exact match using
/// Posix style, case/separator insensitive match for Windows style.
/// @result true if \a Path begins with OldPrefix
bool replace_path_prefix(SmallVectorImpl<char> &Path, StringRef OldPrefix,
                         StringRef NewPrefix,
                         Style style = Style::native);

/// Append to path.
///
/// @code
///   /foo  + bar/f => /foo/bar/f
///   /foo/ + bar/f => /foo/bar/f
///   foo   + bar/f => foo/bar/f
/// @endcode
///
/// @param path Set to \a path + \a component.
/// @param a The component to be appended to \a path.
void append(SmallVectorImpl<char> &path, const Twine &a,
                                         const Twine &b = "",
                                         const Twine &c = "",
                                         const Twine &d = "");

void append(SmallVectorImpl<char> &path, Style style, const Twine &a,
            const Twine &b = "", const Twine &c = "", const Twine &d = "");

/// Append to path.
///
/// @code
///   /foo  + [bar,f] => /foo/bar/f
///   /foo/ + [bar,f] => /foo/bar/f
///   foo   + [bar,f] => foo/bar/f
/// @endcode
///
/// @param path Set to \a path + [\a begin, \a end).
/// @param begin Start of components to append.
/// @param end One past the end of components to append.
void append(SmallVectorImpl<char> &path, const_iterator begin,
            const_iterator end, Style style = Style::native);

/// @}
/// @name Transforms (or some other better name)
/// @{

/// Convert path to the native form. This is used to give paths to users and
/// operating system calls in the platform's normal way. For example, on Windows
/// all '/' are converted to '\'.
///
/// @param path A path that is transformed to native format.
/// @param result Holds the result of the transformation.
void native(const Twine &path, SmallVectorImpl<char> &result,
            Style style = Style::native);

/// Convert path to the native form in place. This is used to give paths to
/// users and operating system calls in the platform's normal way. For example,
/// on Windows all '/' are converted to '\'.
///
/// @param path A path that is transformed to native format.
void native(SmallVectorImpl<char> &path, Style style = Style::native);

/// Replaces backslashes with slashes if Windows.
///
/// @param path processed path
/// @result The result of replacing backslashes with forward slashes if Windows.
/// On Unix, this function is a no-op because backslashes are valid path
/// chracters.
std::string convert_to_slash(StringRef path, Style style = Style::native);

/// @}
/// @name Lexical Observers
/// @{

/// Get root name.
///
/// @code
///   //net/hello => //net
///   c:/hello    => c: (on Windows, on other platforms nothing)
///   /hello      => <empty>
/// @endcode
///
/// @param path Input path.
/// @result The root name of \a path if it has one, otherwise "".
StringRef root_name(StringRef path, Style style = Style::native);

/// Get root directory.
///
/// @code
///   /goo/hello => /
///   c:/hello   => /
///   d/file.txt => <empty>
/// @endcode
///
/// @param path Input path.
/// @result The root directory of \a path if it has one, otherwise
///               "".
StringRef root_directory(StringRef path, Style style = Style::native);

/// Get root path.
///
/// Equivalent to root_name + root_directory.
///
/// @param path Input path.
/// @result The root path of \a path if it has one, otherwise "".
StringRef root_path(StringRef path, Style style = Style::native);

/// Get relative path.
///
/// @code
///   C:\hello\world => hello\world
///   foo/bar        => foo/bar
///   /foo/bar       => foo/bar
/// @endcode
///
/// @param path Input path.
/// @result The path starting after root_path if one exists, otherwise "".
StringRef relative_path(StringRef path, Style style = Style::native);

/// Get parent path.
///
/// @code
///   /          => <empty>
///   /foo       => /
///   foo/../bar => foo/..
/// @endcode
///
/// @param path Input path.
/// @result The parent path of \a path if one exists, otherwise "".
StringRef parent_path(StringRef path, Style style = Style::native);

/// Get filename.
///
/// @code
///   /foo.txt    => foo.txt
///   .          => .
///   ..         => ..
///   /          => /
/// @endcode
///
/// @param path Input path.
/// @result The filename part of \a path. This is defined as the last component
///         of \a path. Similar to the POSIX "basename" utility.
StringRef filename(StringRef path, Style style = Style::native);

/// Get stem.
///
/// If filename contains a dot but not solely one or two dots, result is the
/// substring of filename ending at (but not including) the last dot. Otherwise
/// it is filename.
///
/// @code
///   /foo/bar.txt => bar
///   /foo/bar     => bar
///   /foo/.txt    => <empty>
///   /foo/.       => .
///   /foo/..      => ..
/// @endcode
///
/// @param path Input path.
/// @result The stem of \a path.
StringRef stem(StringRef path, Style style = Style::native);

/// Get extension.
///
/// If filename contains a dot but not solely one or two dots, result is the
/// substring of filename starting at (and including) the last dot, and ending
/// at the end of \a path. Otherwise "".
///
/// @code
///   /foo/bar.txt => .txt
///   /foo/bar     => <empty>
///   /foo/.txt    => .txt
/// @endcode
///
/// @param path Input path.
/// @result The extension of \a path.
StringRef extension(StringRef path, Style style = Style::native);

/// Check whether the given char is a path separator on the host OS.
///
/// @param value a character
/// @result true if \a value is a path separator character on the host OS
bool is_separator(char value, Style style = Style::native);

/// Return the preferred separator for this platform.
///
/// @result StringRef of the preferred separator, null-terminated.
StringRef get_separator(Style style = Style::native);

/// Get the typical temporary directory for the system, e.g.,
/// "/var/tmp" or "C:/TEMP"
///
/// @param erasedOnReboot Whether to favor a path that is erased on reboot
/// rather than one that potentially persists longer. This parameter will be
/// ignored if the user or system has set the typical environment variable
/// (e.g., TEMP on Windows, TMPDIR on *nix) to specify a temporary directory.
///
/// @param result Holds the resulting path name.
void system_temp_directory(bool erasedOnReboot, SmallVectorImpl<char> &result);

/// Get the user's home directory.
///
/// @param result Holds the resulting path name.
/// @result True if a home directory is set, false otherwise.
bool home_directory(SmallVectorImpl<char> &result);

/// Get the directory where packages should read user-specific configurations.
/// e.g. $XDG_CONFIG_HOME.
///
/// @param result Holds the resulting path name.
/// @result True if the appropriate path was determined, it need not exist.
bool user_config_directory(SmallVectorImpl<char> &result);

/// Get the directory where installed packages should put their
/// machine-local cache, e.g. $XDG_CACHE_HOME.
///
/// @param result Holds the resulting path name.
/// @result True if the appropriate path was determined, it need not exist.
bool cache_directory(SmallVectorImpl<char> &result);

/// Has root name?
///
/// root_name != ""
///
/// @param path Input path.
/// @result True if the path has a root name, false otherwise.
bool has_root_name(const Twine &path, Style style = Style::native);

/// Has root directory?
///
/// root_directory != ""
///
/// @param path Input path.
/// @result True if the path has a root directory, false otherwise.
bool has_root_directory(const Twine &path, Style style = Style::native);

/// Has root path?
///
/// root_path != ""
///
/// @param path Input path.
/// @result True if the path has a root path, false otherwise.
bool has_root_path(const Twine &path, Style style = Style::native);

/// Has relative path?
///
/// relative_path != ""
///
/// @param path Input path.
/// @result True if the path has a relative path, false otherwise.
bool has_relative_path(const Twine &path, Style style = Style::native);

/// Has parent path?
///
/// parent_path != ""
///
/// @param path Input path.
/// @result True if the path has a parent path, false otherwise.
bool has_parent_path(const Twine &path, Style style = Style::native);

/// Has filename?
///
/// filename != ""
///
/// @param path Input path.
/// @result True if the path has a filename, false otherwise.
bool has_filename(const Twine &path, Style style = Style::native);

/// Has stem?
///
/// stem != ""
///
/// @param path Input path.
/// @result True if the path has a stem, false otherwise.
bool has_stem(const Twine &path, Style style = Style::native);

/// Has extension?
///
/// extension != ""
///
/// @param path Input path.
/// @result True if the path has a extension, false otherwise.
bool has_extension(const Twine &path, Style style = Style::native);

/// Is path absolute?
///
/// @param path Input path.
/// @result True if the path is absolute, false if it is not.
bool is_absolute(const Twine &path, Style style = Style::native);

/// Is path relative?
///
/// @param path Input path.
/// @result True if the path is relative, false if it is not.
bool is_relative(const Twine &path, Style style = Style::native);

/// Remove redundant leading "./" pieces and consecutive separators.
///
/// @param path Input path.
/// @result The cleaned-up \a path.
StringRef remove_leading_dotslash(StringRef path, Style style = Style::native);

/// In-place remove any './' and optionally '../' components from a path.
///
/// @param path processed path
/// @param remove_dot_dot specify if '../' (except for leading "../") should be
/// removed
/// @result True if path was changed
bool remove_dots(SmallVectorImpl<char> &path, bool remove_dot_dot = false,
                 Style style = Style::native);

} // end namespace path
} // end namespace sys
} // end namespace llvm

#endif

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