forked from OSchip/llvm-project
1356 lines
39 KiB
C++
1356 lines
39 KiB
C++
//===-- Path.cpp - Implement OS Path Concept ------------------------------===//
|
|
//
|
|
// 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 implements the operating system Path API.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/Path.h"
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/ScopeExit.h"
|
|
#include "llvm/Config/config.h"
|
|
#include "llvm/Config/llvm-config.h"
|
|
#include "llvm/Support/Endian.h"
|
|
#include "llvm/Support/Errc.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/Process.h"
|
|
#include "llvm/Support/Signals.h"
|
|
#include <cctype>
|
|
#include <cstring>
|
|
|
|
#if !defined(_MSC_VER) && !defined(__MINGW32__)
|
|
#include <unistd.h>
|
|
#else
|
|
#include <io.h>
|
|
#endif
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::support::endian;
|
|
|
|
namespace {
|
|
using llvm::StringRef;
|
|
using llvm::sys::path::is_separator;
|
|
using llvm::sys::path::Style;
|
|
|
|
inline Style real_style(Style style) {
|
|
if (style != Style::native)
|
|
return style;
|
|
if (is_style_posix(style))
|
|
return Style::posix;
|
|
return LLVM_WINDOWS_PREFER_FORWARD_SLASH ? Style::windows_slash
|
|
: Style::windows_backslash;
|
|
}
|
|
|
|
inline const char *separators(Style style) {
|
|
if (is_style_windows(style))
|
|
return "\\/";
|
|
return "/";
|
|
}
|
|
|
|
inline char preferred_separator(Style style) {
|
|
if (real_style(style) == Style::windows)
|
|
return '\\';
|
|
return '/';
|
|
}
|
|
|
|
StringRef find_first_component(StringRef path, Style style) {
|
|
// Look for this first component in the following order.
|
|
// * empty (in this case we return an empty string)
|
|
// * either C: or {//,\\}net.
|
|
// * {/,\}
|
|
// * {file,directory}name
|
|
|
|
if (path.empty())
|
|
return path;
|
|
|
|
if (is_style_windows(style)) {
|
|
// C:
|
|
if (path.size() >= 2 &&
|
|
std::isalpha(static_cast<unsigned char>(path[0])) && path[1] == ':')
|
|
return path.substr(0, 2);
|
|
}
|
|
|
|
// //net
|
|
if ((path.size() > 2) && is_separator(path[0], style) &&
|
|
path[0] == path[1] && !is_separator(path[2], style)) {
|
|
// Find the next directory separator.
|
|
size_t end = path.find_first_of(separators(style), 2);
|
|
return path.substr(0, end);
|
|
}
|
|
|
|
// {/,\}
|
|
if (is_separator(path[0], style))
|
|
return path.substr(0, 1);
|
|
|
|
// * {file,directory}name
|
|
size_t end = path.find_first_of(separators(style));
|
|
return path.substr(0, end);
|
|
}
|
|
|
|
// Returns the first character of the filename in str. For paths ending in
|
|
// '/', it returns the position of the '/'.
|
|
size_t filename_pos(StringRef str, Style style) {
|
|
if (str.size() > 0 && is_separator(str[str.size() - 1], style))
|
|
return str.size() - 1;
|
|
|
|
size_t pos = str.find_last_of(separators(style), str.size() - 1);
|
|
|
|
if (is_style_windows(style)) {
|
|
if (pos == StringRef::npos)
|
|
pos = str.find_last_of(':', str.size() - 2);
|
|
}
|
|
|
|
if (pos == StringRef::npos || (pos == 1 && is_separator(str[0], style)))
|
|
return 0;
|
|
|
|
return pos + 1;
|
|
}
|
|
|
|
// Returns the position of the root directory in str. If there is no root
|
|
// directory in str, it returns StringRef::npos.
|
|
size_t root_dir_start(StringRef str, Style style) {
|
|
// case "c:/"
|
|
if (is_style_windows(style)) {
|
|
if (str.size() > 2 && str[1] == ':' && is_separator(str[2], style))
|
|
return 2;
|
|
}
|
|
|
|
// case "//net"
|
|
if (str.size() > 3 && is_separator(str[0], style) && str[0] == str[1] &&
|
|
!is_separator(str[2], style)) {
|
|
return str.find_first_of(separators(style), 2);
|
|
}
|
|
|
|
// case "/"
|
|
if (str.size() > 0 && is_separator(str[0], style))
|
|
return 0;
|
|
|
|
return StringRef::npos;
|
|
}
|
|
|
|
// Returns the position past the end of the "parent path" of path. The parent
|
|
// path will not end in '/', unless the parent is the root directory. If the
|
|
// path has no parent, 0 is returned.
|
|
size_t parent_path_end(StringRef path, Style style) {
|
|
size_t end_pos = filename_pos(path, style);
|
|
|
|
bool filename_was_sep =
|
|
path.size() > 0 && is_separator(path[end_pos], style);
|
|
|
|
// Skip separators until we reach root dir (or the start of the string).
|
|
size_t root_dir_pos = root_dir_start(path, style);
|
|
while (end_pos > 0 &&
|
|
(root_dir_pos == StringRef::npos || end_pos > root_dir_pos) &&
|
|
is_separator(path[end_pos - 1], style))
|
|
--end_pos;
|
|
|
|
if (end_pos == root_dir_pos && !filename_was_sep) {
|
|
// We've reached the root dir and the input path was *not* ending in a
|
|
// sequence of slashes. Include the root dir in the parent path.
|
|
return root_dir_pos + 1;
|
|
}
|
|
|
|
// Otherwise, just include before the last slash.
|
|
return end_pos;
|
|
}
|
|
} // end unnamed namespace
|
|
|
|
enum FSEntity {
|
|
FS_Dir,
|
|
FS_File,
|
|
FS_Name
|
|
};
|
|
|
|
static std::error_code
|
|
createUniqueEntity(const Twine &Model, int &ResultFD,
|
|
SmallVectorImpl<char> &ResultPath, bool MakeAbsolute,
|
|
FSEntity Type, sys::fs::OpenFlags Flags = sys::fs::OF_None,
|
|
unsigned Mode = 0) {
|
|
|
|
// Limit the number of attempts we make, so that we don't infinite loop. E.g.
|
|
// "permission denied" could be for a specific file (so we retry with a
|
|
// different name) or for the whole directory (retry would always fail).
|
|
// Checking which is racy, so we try a number of times, then give up.
|
|
std::error_code EC;
|
|
for (int Retries = 128; Retries > 0; --Retries) {
|
|
sys::fs::createUniquePath(Model, ResultPath, MakeAbsolute);
|
|
// Try to open + create the file.
|
|
switch (Type) {
|
|
case FS_File: {
|
|
EC = sys::fs::openFileForReadWrite(Twine(ResultPath.begin()), ResultFD,
|
|
sys::fs::CD_CreateNew, Flags, Mode);
|
|
if (EC) {
|
|
// errc::permission_denied happens on Windows when we try to open a file
|
|
// that has been marked for deletion.
|
|
if (EC == errc::file_exists || EC == errc::permission_denied)
|
|
continue;
|
|
return EC;
|
|
}
|
|
|
|
return std::error_code();
|
|
}
|
|
|
|
case FS_Name: {
|
|
EC = sys::fs::access(ResultPath.begin(), sys::fs::AccessMode::Exist);
|
|
if (EC == errc::no_such_file_or_directory)
|
|
return std::error_code();
|
|
if (EC)
|
|
return EC;
|
|
continue;
|
|
}
|
|
|
|
case FS_Dir: {
|
|
EC = sys::fs::create_directory(ResultPath.begin(), false);
|
|
if (EC) {
|
|
if (EC == errc::file_exists)
|
|
continue;
|
|
return EC;
|
|
}
|
|
return std::error_code();
|
|
}
|
|
}
|
|
llvm_unreachable("Invalid Type");
|
|
}
|
|
return EC;
|
|
}
|
|
|
|
namespace llvm {
|
|
namespace sys {
|
|
namespace path {
|
|
|
|
const_iterator begin(StringRef path, Style style) {
|
|
const_iterator i;
|
|
i.Path = path;
|
|
i.Component = find_first_component(path, style);
|
|
i.Position = 0;
|
|
i.S = style;
|
|
return i;
|
|
}
|
|
|
|
const_iterator end(StringRef path) {
|
|
const_iterator i;
|
|
i.Path = path;
|
|
i.Position = path.size();
|
|
return i;
|
|
}
|
|
|
|
const_iterator &const_iterator::operator++() {
|
|
assert(Position < Path.size() && "Tried to increment past end!");
|
|
|
|
// Increment Position to past the current component
|
|
Position += Component.size();
|
|
|
|
// Check for end.
|
|
if (Position == Path.size()) {
|
|
Component = StringRef();
|
|
return *this;
|
|
}
|
|
|
|
// Both POSIX and Windows treat paths that begin with exactly two separators
|
|
// specially.
|
|
bool was_net = Component.size() > 2 && is_separator(Component[0], S) &&
|
|
Component[1] == Component[0] && !is_separator(Component[2], S);
|
|
|
|
// Handle separators.
|
|
if (is_separator(Path[Position], S)) {
|
|
// Root dir.
|
|
if (was_net ||
|
|
// c:/
|
|
(is_style_windows(S) && Component.endswith(":"))) {
|
|
Component = Path.substr(Position, 1);
|
|
return *this;
|
|
}
|
|
|
|
// Skip extra separators.
|
|
while (Position != Path.size() && is_separator(Path[Position], S)) {
|
|
++Position;
|
|
}
|
|
|
|
// Treat trailing '/' as a '.', unless it is the root dir.
|
|
if (Position == Path.size() && Component != "/") {
|
|
--Position;
|
|
Component = ".";
|
|
return *this;
|
|
}
|
|
}
|
|
|
|
// Find next component.
|
|
size_t end_pos = Path.find_first_of(separators(S), Position);
|
|
Component = Path.slice(Position, end_pos);
|
|
|
|
return *this;
|
|
}
|
|
|
|
bool const_iterator::operator==(const const_iterator &RHS) const {
|
|
return Path.begin() == RHS.Path.begin() && Position == RHS.Position;
|
|
}
|
|
|
|
ptrdiff_t const_iterator::operator-(const const_iterator &RHS) const {
|
|
return Position - RHS.Position;
|
|
}
|
|
|
|
reverse_iterator rbegin(StringRef Path, Style style) {
|
|
reverse_iterator I;
|
|
I.Path = Path;
|
|
I.Position = Path.size();
|
|
I.S = style;
|
|
++I;
|
|
return I;
|
|
}
|
|
|
|
reverse_iterator rend(StringRef Path) {
|
|
reverse_iterator I;
|
|
I.Path = Path;
|
|
I.Component = Path.substr(0, 0);
|
|
I.Position = 0;
|
|
return I;
|
|
}
|
|
|
|
reverse_iterator &reverse_iterator::operator++() {
|
|
size_t root_dir_pos = root_dir_start(Path, S);
|
|
|
|
// Skip separators unless it's the root directory.
|
|
size_t end_pos = Position;
|
|
while (end_pos > 0 && (end_pos - 1) != root_dir_pos &&
|
|
is_separator(Path[end_pos - 1], S))
|
|
--end_pos;
|
|
|
|
// Treat trailing '/' as a '.', unless it is the root dir.
|
|
if (Position == Path.size() && !Path.empty() &&
|
|
is_separator(Path.back(), S) &&
|
|
(root_dir_pos == StringRef::npos || end_pos - 1 > root_dir_pos)) {
|
|
--Position;
|
|
Component = ".";
|
|
return *this;
|
|
}
|
|
|
|
// Find next separator.
|
|
size_t start_pos = filename_pos(Path.substr(0, end_pos), S);
|
|
Component = Path.slice(start_pos, end_pos);
|
|
Position = start_pos;
|
|
return *this;
|
|
}
|
|
|
|
bool reverse_iterator::operator==(const reverse_iterator &RHS) const {
|
|
return Path.begin() == RHS.Path.begin() && Component == RHS.Component &&
|
|
Position == RHS.Position;
|
|
}
|
|
|
|
ptrdiff_t reverse_iterator::operator-(const reverse_iterator &RHS) const {
|
|
return Position - RHS.Position;
|
|
}
|
|
|
|
StringRef root_path(StringRef path, Style style) {
|
|
const_iterator b = begin(path, style), pos = b, e = end(path);
|
|
if (b != e) {
|
|
bool has_net =
|
|
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
|
|
bool has_drive = is_style_windows(style) && b->endswith(":");
|
|
|
|
if (has_net || has_drive) {
|
|
if ((++pos != e) && is_separator((*pos)[0], style)) {
|
|
// {C:/,//net/}, so get the first two components.
|
|
return path.substr(0, b->size() + pos->size());
|
|
}
|
|
// just {C:,//net}, return the first component.
|
|
return *b;
|
|
}
|
|
|
|
// POSIX style root directory.
|
|
if (is_separator((*b)[0], style)) {
|
|
return *b;
|
|
}
|
|
}
|
|
|
|
return StringRef();
|
|
}
|
|
|
|
StringRef root_name(StringRef path, Style style) {
|
|
const_iterator b = begin(path, style), e = end(path);
|
|
if (b != e) {
|
|
bool has_net =
|
|
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
|
|
bool has_drive = is_style_windows(style) && b->endswith(":");
|
|
|
|
if (has_net || has_drive) {
|
|
// just {C:,//net}, return the first component.
|
|
return *b;
|
|
}
|
|
}
|
|
|
|
// No path or no name.
|
|
return StringRef();
|
|
}
|
|
|
|
StringRef root_directory(StringRef path, Style style) {
|
|
const_iterator b = begin(path, style), pos = b, e = end(path);
|
|
if (b != e) {
|
|
bool has_net =
|
|
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
|
|
bool has_drive = is_style_windows(style) && b->endswith(":");
|
|
|
|
if ((has_net || has_drive) &&
|
|
// {C:,//net}, skip to the next component.
|
|
(++pos != e) && is_separator((*pos)[0], style)) {
|
|
return *pos;
|
|
}
|
|
|
|
// POSIX style root directory.
|
|
if (!has_net && is_separator((*b)[0], style)) {
|
|
return *b;
|
|
}
|
|
}
|
|
|
|
// No path or no root.
|
|
return StringRef();
|
|
}
|
|
|
|
StringRef relative_path(StringRef path, Style style) {
|
|
StringRef root = root_path(path, style);
|
|
return path.substr(root.size());
|
|
}
|
|
|
|
void append(SmallVectorImpl<char> &path, Style style, const Twine &a,
|
|
const Twine &b, const Twine &c, const Twine &d) {
|
|
SmallString<32> a_storage;
|
|
SmallString<32> b_storage;
|
|
SmallString<32> c_storage;
|
|
SmallString<32> d_storage;
|
|
|
|
SmallVector<StringRef, 4> components;
|
|
if (!a.isTriviallyEmpty()) components.push_back(a.toStringRef(a_storage));
|
|
if (!b.isTriviallyEmpty()) components.push_back(b.toStringRef(b_storage));
|
|
if (!c.isTriviallyEmpty()) components.push_back(c.toStringRef(c_storage));
|
|
if (!d.isTriviallyEmpty()) components.push_back(d.toStringRef(d_storage));
|
|
|
|
for (auto &component : components) {
|
|
bool path_has_sep =
|
|
!path.empty() && is_separator(path[path.size() - 1], style);
|
|
if (path_has_sep) {
|
|
// Strip separators from beginning of component.
|
|
size_t loc = component.find_first_not_of(separators(style));
|
|
StringRef c = component.substr(loc);
|
|
|
|
// Append it.
|
|
path.append(c.begin(), c.end());
|
|
continue;
|
|
}
|
|
|
|
bool component_has_sep =
|
|
!component.empty() && is_separator(component[0], style);
|
|
if (!component_has_sep &&
|
|
!(path.empty() || has_root_name(component, style))) {
|
|
// Add a separator.
|
|
path.push_back(preferred_separator(style));
|
|
}
|
|
|
|
path.append(component.begin(), component.end());
|
|
}
|
|
}
|
|
|
|
void append(SmallVectorImpl<char> &path, const Twine &a, const Twine &b,
|
|
const Twine &c, const Twine &d) {
|
|
append(path, Style::native, a, b, c, d);
|
|
}
|
|
|
|
void append(SmallVectorImpl<char> &path, const_iterator begin,
|
|
const_iterator end, Style style) {
|
|
for (; begin != end; ++begin)
|
|
path::append(path, style, *begin);
|
|
}
|
|
|
|
StringRef parent_path(StringRef path, Style style) {
|
|
size_t end_pos = parent_path_end(path, style);
|
|
if (end_pos == StringRef::npos)
|
|
return StringRef();
|
|
return path.substr(0, end_pos);
|
|
}
|
|
|
|
void remove_filename(SmallVectorImpl<char> &path, Style style) {
|
|
size_t end_pos = parent_path_end(StringRef(path.begin(), path.size()), style);
|
|
if (end_pos != StringRef::npos)
|
|
path.truncate(end_pos);
|
|
}
|
|
|
|
void replace_extension(SmallVectorImpl<char> &path, const Twine &extension,
|
|
Style style) {
|
|
StringRef p(path.begin(), path.size());
|
|
SmallString<32> ext_storage;
|
|
StringRef ext = extension.toStringRef(ext_storage);
|
|
|
|
// Erase existing extension.
|
|
size_t pos = p.find_last_of('.');
|
|
if (pos != StringRef::npos && pos >= filename_pos(p, style))
|
|
path.truncate(pos);
|
|
|
|
// Append '.' if needed.
|
|
if (ext.size() > 0 && ext[0] != '.')
|
|
path.push_back('.');
|
|
|
|
// Append extension.
|
|
path.append(ext.begin(), ext.end());
|
|
}
|
|
|
|
static bool starts_with(StringRef Path, StringRef Prefix,
|
|
Style style = Style::native) {
|
|
// Windows prefix matching : case and separator insensitive
|
|
if (is_style_windows(style)) {
|
|
if (Path.size() < Prefix.size())
|
|
return false;
|
|
for (size_t I = 0, E = Prefix.size(); I != E; ++I) {
|
|
bool SepPath = is_separator(Path[I], style);
|
|
bool SepPrefix = is_separator(Prefix[I], style);
|
|
if (SepPath != SepPrefix)
|
|
return false;
|
|
if (!SepPath && toLower(Path[I]) != toLower(Prefix[I]))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
return Path.startswith(Prefix);
|
|
}
|
|
|
|
bool replace_path_prefix(SmallVectorImpl<char> &Path, StringRef OldPrefix,
|
|
StringRef NewPrefix, Style style) {
|
|
if (OldPrefix.empty() && NewPrefix.empty())
|
|
return false;
|
|
|
|
StringRef OrigPath(Path.begin(), Path.size());
|
|
if (!starts_with(OrigPath, OldPrefix, style))
|
|
return false;
|
|
|
|
// If prefixes have the same size we can simply copy the new one over.
|
|
if (OldPrefix.size() == NewPrefix.size()) {
|
|
llvm::copy(NewPrefix, Path.begin());
|
|
return true;
|
|
}
|
|
|
|
StringRef RelPath = OrigPath.substr(OldPrefix.size());
|
|
SmallString<256> NewPath;
|
|
(Twine(NewPrefix) + RelPath).toVector(NewPath);
|
|
Path.swap(NewPath);
|
|
return true;
|
|
}
|
|
|
|
void native(const Twine &path, SmallVectorImpl<char> &result, Style style) {
|
|
assert((!path.isSingleStringRef() ||
|
|
path.getSingleStringRef().data() != result.data()) &&
|
|
"path and result are not allowed to overlap!");
|
|
// Clear result.
|
|
result.clear();
|
|
path.toVector(result);
|
|
native(result, style);
|
|
}
|
|
|
|
void native(SmallVectorImpl<char> &Path, Style style) {
|
|
if (Path.empty())
|
|
return;
|
|
if (is_style_windows(style)) {
|
|
for (char &Ch : Path)
|
|
if (is_separator(Ch, style))
|
|
Ch = preferred_separator(style);
|
|
if (Path[0] == '~' && (Path.size() == 1 || is_separator(Path[1], style))) {
|
|
SmallString<128> PathHome;
|
|
home_directory(PathHome);
|
|
PathHome.append(Path.begin() + 1, Path.end());
|
|
Path = PathHome;
|
|
}
|
|
} else {
|
|
std::replace(Path.begin(), Path.end(), '\\', '/');
|
|
}
|
|
}
|
|
|
|
std::string convert_to_slash(StringRef path, Style style) {
|
|
if (is_style_posix(style))
|
|
return std::string(path);
|
|
|
|
std::string s = path.str();
|
|
std::replace(s.begin(), s.end(), '\\', '/');
|
|
return s;
|
|
}
|
|
|
|
StringRef filename(StringRef path, Style style) { return *rbegin(path, style); }
|
|
|
|
StringRef stem(StringRef path, Style style) {
|
|
StringRef fname = filename(path, style);
|
|
size_t pos = fname.find_last_of('.');
|
|
if (pos == StringRef::npos)
|
|
return fname;
|
|
if ((fname.size() == 1 && fname == ".") ||
|
|
(fname.size() == 2 && fname == ".."))
|
|
return fname;
|
|
return fname.substr(0, pos);
|
|
}
|
|
|
|
StringRef extension(StringRef path, Style style) {
|
|
StringRef fname = filename(path, style);
|
|
size_t pos = fname.find_last_of('.');
|
|
if (pos == StringRef::npos)
|
|
return StringRef();
|
|
if ((fname.size() == 1 && fname == ".") ||
|
|
(fname.size() == 2 && fname == ".."))
|
|
return StringRef();
|
|
return fname.substr(pos);
|
|
}
|
|
|
|
bool is_separator(char value, Style style) {
|
|
if (value == '/')
|
|
return true;
|
|
if (is_style_windows(style))
|
|
return value == '\\';
|
|
return false;
|
|
}
|
|
|
|
StringRef get_separator(Style style) {
|
|
if (real_style(style) == Style::windows)
|
|
return "\\";
|
|
return "/";
|
|
}
|
|
|
|
bool has_root_name(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !root_name(p, style).empty();
|
|
}
|
|
|
|
bool has_root_directory(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !root_directory(p, style).empty();
|
|
}
|
|
|
|
bool has_root_path(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !root_path(p, style).empty();
|
|
}
|
|
|
|
bool has_relative_path(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !relative_path(p, style).empty();
|
|
}
|
|
|
|
bool has_filename(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !filename(p, style).empty();
|
|
}
|
|
|
|
bool has_parent_path(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !parent_path(p, style).empty();
|
|
}
|
|
|
|
bool has_stem(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !stem(p, style).empty();
|
|
}
|
|
|
|
bool has_extension(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
return !extension(p, style).empty();
|
|
}
|
|
|
|
bool is_absolute(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
bool rootDir = has_root_directory(p, style);
|
|
bool rootName = is_style_posix(style) || has_root_name(p, style);
|
|
|
|
return rootDir && rootName;
|
|
}
|
|
|
|
bool is_absolute_gnu(const Twine &path, Style style) {
|
|
SmallString<128> path_storage;
|
|
StringRef p = path.toStringRef(path_storage);
|
|
|
|
// Handle '/' which is absolute for both Windows and POSIX systems.
|
|
// Handle '\\' on Windows.
|
|
if (!p.empty() && is_separator(p.front(), style))
|
|
return true;
|
|
|
|
if (is_style_windows(style)) {
|
|
// Handle drive letter pattern (a character followed by ':') on Windows.
|
|
if (p.size() >= 2 && (p[0] && p[1] == ':'))
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool is_relative(const Twine &path, Style style) {
|
|
return !is_absolute(path, style);
|
|
}
|
|
|
|
StringRef remove_leading_dotslash(StringRef Path, Style style) {
|
|
// Remove leading "./" (or ".//" or "././" etc.)
|
|
while (Path.size() > 2 && Path[0] == '.' && is_separator(Path[1], style)) {
|
|
Path = Path.substr(2);
|
|
while (Path.size() > 0 && is_separator(Path[0], style))
|
|
Path = Path.substr(1);
|
|
}
|
|
return Path;
|
|
}
|
|
|
|
// Remove path traversal components ("." and "..") when possible, and
|
|
// canonicalize slashes.
|
|
bool remove_dots(SmallVectorImpl<char> &the_path, bool remove_dot_dot,
|
|
Style style) {
|
|
style = real_style(style);
|
|
StringRef remaining(the_path.data(), the_path.size());
|
|
bool needs_change = false;
|
|
SmallVector<StringRef, 16> components;
|
|
|
|
// Consume the root path, if present.
|
|
StringRef root = path::root_path(remaining, style);
|
|
bool absolute = !root.empty();
|
|
if (absolute)
|
|
remaining = remaining.drop_front(root.size());
|
|
|
|
// Loop over path components manually. This makes it easier to detect
|
|
// non-preferred slashes and double separators that must be canonicalized.
|
|
while (!remaining.empty()) {
|
|
size_t next_slash = remaining.find_first_of(separators(style));
|
|
if (next_slash == StringRef::npos)
|
|
next_slash = remaining.size();
|
|
StringRef component = remaining.take_front(next_slash);
|
|
remaining = remaining.drop_front(next_slash);
|
|
|
|
// Eat the slash, and check if it is the preferred separator.
|
|
if (!remaining.empty()) {
|
|
needs_change |= remaining.front() != preferred_separator(style);
|
|
remaining = remaining.drop_front();
|
|
// The path needs to be rewritten if it has a trailing slash.
|
|
// FIXME: This is emergent behavior that could be removed.
|
|
needs_change |= remaining.empty();
|
|
}
|
|
|
|
// Check for path traversal components or double separators.
|
|
if (component.empty() || component == ".") {
|
|
needs_change = true;
|
|
} else if (remove_dot_dot && component == "..") {
|
|
needs_change = true;
|
|
// Do not allow ".." to remove the root component. If this is the
|
|
// beginning of a relative path, keep the ".." component.
|
|
if (!components.empty() && components.back() != "..") {
|
|
components.pop_back();
|
|
} else if (!absolute) {
|
|
components.push_back(component);
|
|
}
|
|
} else {
|
|
components.push_back(component);
|
|
}
|
|
}
|
|
|
|
// Avoid rewriting the path unless we have to.
|
|
if (!needs_change)
|
|
return false;
|
|
|
|
SmallString<256> buffer = root;
|
|
if (!components.empty()) {
|
|
buffer += components[0];
|
|
for (StringRef C : makeArrayRef(components).drop_front()) {
|
|
buffer += preferred_separator(style);
|
|
buffer += C;
|
|
}
|
|
}
|
|
the_path.swap(buffer);
|
|
return true;
|
|
}
|
|
|
|
} // end namespace path
|
|
|
|
namespace fs {
|
|
|
|
std::error_code getUniqueID(const Twine Path, UniqueID &Result) {
|
|
file_status Status;
|
|
std::error_code EC = status(Path, Status);
|
|
if (EC)
|
|
return EC;
|
|
Result = Status.getUniqueID();
|
|
return std::error_code();
|
|
}
|
|
|
|
void createUniquePath(const Twine &Model, SmallVectorImpl<char> &ResultPath,
|
|
bool MakeAbsolute) {
|
|
SmallString<128> ModelStorage;
|
|
Model.toVector(ModelStorage);
|
|
|
|
if (MakeAbsolute) {
|
|
// Make model absolute by prepending a temp directory if it's not already.
|
|
if (!sys::path::is_absolute(Twine(ModelStorage))) {
|
|
SmallString<128> TDir;
|
|
sys::path::system_temp_directory(true, TDir);
|
|
sys::path::append(TDir, Twine(ModelStorage));
|
|
ModelStorage.swap(TDir);
|
|
}
|
|
}
|
|
|
|
ResultPath = ModelStorage;
|
|
ResultPath.push_back(0);
|
|
ResultPath.pop_back();
|
|
|
|
// Replace '%' with random chars.
|
|
for (unsigned i = 0, e = ModelStorage.size(); i != e; ++i) {
|
|
if (ModelStorage[i] == '%')
|
|
ResultPath[i] = "0123456789abcdef"[sys::Process::GetRandomNumber() & 15];
|
|
}
|
|
}
|
|
|
|
std::error_code createUniqueFile(const Twine &Model, int &ResultFd,
|
|
SmallVectorImpl<char> &ResultPath,
|
|
OpenFlags Flags, unsigned Mode) {
|
|
return createUniqueEntity(Model, ResultFd, ResultPath, false, FS_File, Flags,
|
|
Mode);
|
|
}
|
|
|
|
std::error_code createUniqueFile(const Twine &Model,
|
|
SmallVectorImpl<char> &ResultPath,
|
|
unsigned Mode) {
|
|
int FD;
|
|
auto EC = createUniqueFile(Model, FD, ResultPath, OF_None, Mode);
|
|
if (EC)
|
|
return EC;
|
|
// FD is only needed to avoid race conditions. Close it right away.
|
|
close(FD);
|
|
return EC;
|
|
}
|
|
|
|
static std::error_code
|
|
createTemporaryFile(const Twine &Model, int &ResultFD,
|
|
llvm::SmallVectorImpl<char> &ResultPath, FSEntity Type,
|
|
sys::fs::OpenFlags Flags = sys::fs::OF_None) {
|
|
SmallString<128> Storage;
|
|
StringRef P = Model.toNullTerminatedStringRef(Storage);
|
|
assert(P.find_first_of(separators(Style::native)) == StringRef::npos &&
|
|
"Model must be a simple filename.");
|
|
// Use P.begin() so that createUniqueEntity doesn't need to recreate Storage.
|
|
return createUniqueEntity(P.begin(), ResultFD, ResultPath, true, Type, Flags,
|
|
owner_read | owner_write);
|
|
}
|
|
|
|
static std::error_code
|
|
createTemporaryFile(const Twine &Prefix, StringRef Suffix, int &ResultFD,
|
|
llvm::SmallVectorImpl<char> &ResultPath, FSEntity Type,
|
|
sys::fs::OpenFlags Flags = sys::fs::OF_None) {
|
|
const char *Middle = Suffix.empty() ? "-%%%%%%" : "-%%%%%%.";
|
|
return createTemporaryFile(Prefix + Middle + Suffix, ResultFD, ResultPath,
|
|
Type, Flags);
|
|
}
|
|
|
|
std::error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
|
|
int &ResultFD,
|
|
SmallVectorImpl<char> &ResultPath,
|
|
sys::fs::OpenFlags Flags) {
|
|
return createTemporaryFile(Prefix, Suffix, ResultFD, ResultPath, FS_File,
|
|
Flags);
|
|
}
|
|
|
|
std::error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
|
|
SmallVectorImpl<char> &ResultPath,
|
|
sys::fs::OpenFlags Flags) {
|
|
int FD;
|
|
auto EC = createTemporaryFile(Prefix, Suffix, FD, ResultPath, Flags);
|
|
if (EC)
|
|
return EC;
|
|
// FD is only needed to avoid race conditions. Close it right away.
|
|
close(FD);
|
|
return EC;
|
|
}
|
|
|
|
// This is a mkdtemp with a different pattern. We use createUniqueEntity mostly
|
|
// for consistency. We should try using mkdtemp.
|
|
std::error_code createUniqueDirectory(const Twine &Prefix,
|
|
SmallVectorImpl<char> &ResultPath) {
|
|
int Dummy;
|
|
return createUniqueEntity(Prefix + "-%%%%%%", Dummy, ResultPath, true,
|
|
FS_Dir);
|
|
}
|
|
|
|
std::error_code
|
|
getPotentiallyUniqueFileName(const Twine &Model,
|
|
SmallVectorImpl<char> &ResultPath) {
|
|
int Dummy;
|
|
return createUniqueEntity(Model, Dummy, ResultPath, false, FS_Name);
|
|
}
|
|
|
|
std::error_code
|
|
getPotentiallyUniqueTempFileName(const Twine &Prefix, StringRef Suffix,
|
|
SmallVectorImpl<char> &ResultPath) {
|
|
int Dummy;
|
|
return createTemporaryFile(Prefix, Suffix, Dummy, ResultPath, FS_Name);
|
|
}
|
|
|
|
void make_absolute(const Twine ¤t_directory,
|
|
SmallVectorImpl<char> &path) {
|
|
StringRef p(path.data(), path.size());
|
|
|
|
bool rootDirectory = path::has_root_directory(p);
|
|
bool rootName = path::has_root_name(p);
|
|
|
|
// Already absolute.
|
|
if ((rootName || is_style_posix(Style::native)) && rootDirectory)
|
|
return;
|
|
|
|
// All of the following conditions will need the current directory.
|
|
SmallString<128> current_dir;
|
|
current_directory.toVector(current_dir);
|
|
|
|
// Relative path. Prepend the current directory.
|
|
if (!rootName && !rootDirectory) {
|
|
// Append path to the current directory.
|
|
path::append(current_dir, p);
|
|
// Set path to the result.
|
|
path.swap(current_dir);
|
|
return;
|
|
}
|
|
|
|
if (!rootName && rootDirectory) {
|
|
StringRef cdrn = path::root_name(current_dir);
|
|
SmallString<128> curDirRootName(cdrn.begin(), cdrn.end());
|
|
path::append(curDirRootName, p);
|
|
// Set path to the result.
|
|
path.swap(curDirRootName);
|
|
return;
|
|
}
|
|
|
|
if (rootName && !rootDirectory) {
|
|
StringRef pRootName = path::root_name(p);
|
|
StringRef bRootDirectory = path::root_directory(current_dir);
|
|
StringRef bRelativePath = path::relative_path(current_dir);
|
|
StringRef pRelativePath = path::relative_path(p);
|
|
|
|
SmallString<128> res;
|
|
path::append(res, pRootName, bRootDirectory, bRelativePath, pRelativePath);
|
|
path.swap(res);
|
|
return;
|
|
}
|
|
|
|
llvm_unreachable("All rootName and rootDirectory combinations should have "
|
|
"occurred above!");
|
|
}
|
|
|
|
std::error_code make_absolute(SmallVectorImpl<char> &path) {
|
|
if (path::is_absolute(path))
|
|
return {};
|
|
|
|
SmallString<128> current_dir;
|
|
if (std::error_code ec = current_path(current_dir))
|
|
return ec;
|
|
|
|
make_absolute(current_dir, path);
|
|
return {};
|
|
}
|
|
|
|
std::error_code create_directories(const Twine &Path, bool IgnoreExisting,
|
|
perms Perms) {
|
|
SmallString<128> PathStorage;
|
|
StringRef P = Path.toStringRef(PathStorage);
|
|
|
|
// Be optimistic and try to create the directory
|
|
std::error_code EC = create_directory(P, IgnoreExisting, Perms);
|
|
// If we succeeded, or had any error other than the parent not existing, just
|
|
// return it.
|
|
if (EC != errc::no_such_file_or_directory)
|
|
return EC;
|
|
|
|
// We failed because of a no_such_file_or_directory, try to create the
|
|
// parent.
|
|
StringRef Parent = path::parent_path(P);
|
|
if (Parent.empty())
|
|
return EC;
|
|
|
|
if ((EC = create_directories(Parent, IgnoreExisting, Perms)))
|
|
return EC;
|
|
|
|
return create_directory(P, IgnoreExisting, Perms);
|
|
}
|
|
|
|
static std::error_code copy_file_internal(int ReadFD, int WriteFD) {
|
|
const size_t BufSize = 4096;
|
|
char *Buf = new char[BufSize];
|
|
int BytesRead = 0, BytesWritten = 0;
|
|
for (;;) {
|
|
BytesRead = read(ReadFD, Buf, BufSize);
|
|
if (BytesRead <= 0)
|
|
break;
|
|
while (BytesRead) {
|
|
BytesWritten = write(WriteFD, Buf, BytesRead);
|
|
if (BytesWritten < 0)
|
|
break;
|
|
BytesRead -= BytesWritten;
|
|
}
|
|
if (BytesWritten < 0)
|
|
break;
|
|
}
|
|
delete[] Buf;
|
|
|
|
if (BytesRead < 0 || BytesWritten < 0)
|
|
return std::error_code(errno, std::generic_category());
|
|
return std::error_code();
|
|
}
|
|
|
|
#ifndef __APPLE__
|
|
std::error_code copy_file(const Twine &From, const Twine &To) {
|
|
int ReadFD, WriteFD;
|
|
if (std::error_code EC = openFileForRead(From, ReadFD, OF_None))
|
|
return EC;
|
|
if (std::error_code EC =
|
|
openFileForWrite(To, WriteFD, CD_CreateAlways, OF_None)) {
|
|
close(ReadFD);
|
|
return EC;
|
|
}
|
|
|
|
std::error_code EC = copy_file_internal(ReadFD, WriteFD);
|
|
|
|
close(ReadFD);
|
|
close(WriteFD);
|
|
|
|
return EC;
|
|
}
|
|
#endif
|
|
|
|
std::error_code copy_file(const Twine &From, int ToFD) {
|
|
int ReadFD;
|
|
if (std::error_code EC = openFileForRead(From, ReadFD, OF_None))
|
|
return EC;
|
|
|
|
std::error_code EC = copy_file_internal(ReadFD, ToFD);
|
|
|
|
close(ReadFD);
|
|
|
|
return EC;
|
|
}
|
|
|
|
ErrorOr<MD5::MD5Result> md5_contents(int FD) {
|
|
MD5 Hash;
|
|
|
|
constexpr size_t BufSize = 4096;
|
|
std::vector<uint8_t> Buf(BufSize);
|
|
int BytesRead = 0;
|
|
for (;;) {
|
|
BytesRead = read(FD, Buf.data(), BufSize);
|
|
if (BytesRead <= 0)
|
|
break;
|
|
Hash.update(makeArrayRef(Buf.data(), BytesRead));
|
|
}
|
|
|
|
if (BytesRead < 0)
|
|
return std::error_code(errno, std::generic_category());
|
|
MD5::MD5Result Result;
|
|
Hash.final(Result);
|
|
return Result;
|
|
}
|
|
|
|
ErrorOr<MD5::MD5Result> md5_contents(const Twine &Path) {
|
|
int FD;
|
|
if (auto EC = openFileForRead(Path, FD, OF_None))
|
|
return EC;
|
|
|
|
auto Result = md5_contents(FD);
|
|
close(FD);
|
|
return Result;
|
|
}
|
|
|
|
bool exists(const basic_file_status &status) {
|
|
return status_known(status) && status.type() != file_type::file_not_found;
|
|
}
|
|
|
|
bool status_known(const basic_file_status &s) {
|
|
return s.type() != file_type::status_error;
|
|
}
|
|
|
|
file_type get_file_type(const Twine &Path, bool Follow) {
|
|
file_status st;
|
|
if (status(Path, st, Follow))
|
|
return file_type::status_error;
|
|
return st.type();
|
|
}
|
|
|
|
bool is_directory(const basic_file_status &status) {
|
|
return status.type() == file_type::directory_file;
|
|
}
|
|
|
|
std::error_code is_directory(const Twine &path, bool &result) {
|
|
file_status st;
|
|
if (std::error_code ec = status(path, st))
|
|
return ec;
|
|
result = is_directory(st);
|
|
return std::error_code();
|
|
}
|
|
|
|
bool is_regular_file(const basic_file_status &status) {
|
|
return status.type() == file_type::regular_file;
|
|
}
|
|
|
|
std::error_code is_regular_file(const Twine &path, bool &result) {
|
|
file_status st;
|
|
if (std::error_code ec = status(path, st))
|
|
return ec;
|
|
result = is_regular_file(st);
|
|
return std::error_code();
|
|
}
|
|
|
|
bool is_symlink_file(const basic_file_status &status) {
|
|
return status.type() == file_type::symlink_file;
|
|
}
|
|
|
|
std::error_code is_symlink_file(const Twine &path, bool &result) {
|
|
file_status st;
|
|
if (std::error_code ec = status(path, st, false))
|
|
return ec;
|
|
result = is_symlink_file(st);
|
|
return std::error_code();
|
|
}
|
|
|
|
bool is_other(const basic_file_status &status) {
|
|
return exists(status) &&
|
|
!is_regular_file(status) &&
|
|
!is_directory(status);
|
|
}
|
|
|
|
std::error_code is_other(const Twine &Path, bool &Result) {
|
|
file_status FileStatus;
|
|
if (std::error_code EC = status(Path, FileStatus))
|
|
return EC;
|
|
Result = is_other(FileStatus);
|
|
return std::error_code();
|
|
}
|
|
|
|
void directory_entry::replace_filename(const Twine &Filename, file_type Type,
|
|
basic_file_status Status) {
|
|
SmallString<128> PathStr = path::parent_path(Path);
|
|
path::append(PathStr, Filename);
|
|
this->Path = std::string(PathStr.str());
|
|
this->Type = Type;
|
|
this->Status = Status;
|
|
}
|
|
|
|
ErrorOr<perms> getPermissions(const Twine &Path) {
|
|
file_status Status;
|
|
if (std::error_code EC = status(Path, Status))
|
|
return EC;
|
|
|
|
return Status.permissions();
|
|
}
|
|
|
|
size_t mapped_file_region::size() const {
|
|
assert(Mapping && "Mapping failed but used anyway!");
|
|
return Size;
|
|
}
|
|
|
|
char *mapped_file_region::data() const {
|
|
assert(Mapping && "Mapping failed but used anyway!");
|
|
return reinterpret_cast<char *>(Mapping);
|
|
}
|
|
|
|
const char *mapped_file_region::const_data() const {
|
|
assert(Mapping && "Mapping failed but used anyway!");
|
|
return reinterpret_cast<const char *>(Mapping);
|
|
}
|
|
|
|
Error readNativeFileToEOF(file_t FileHandle, SmallVectorImpl<char> &Buffer,
|
|
ssize_t ChunkSize) {
|
|
// Install a handler to truncate the buffer to the correct size on exit.
|
|
size_t Size = Buffer.size();
|
|
auto TruncateOnExit = make_scope_exit([&]() { Buffer.truncate(Size); });
|
|
|
|
// Read into Buffer until we hit EOF.
|
|
for (;;) {
|
|
Buffer.resize_for_overwrite(Size + ChunkSize);
|
|
Expected<size_t> ReadBytes = readNativeFile(
|
|
FileHandle, makeMutableArrayRef(Buffer.begin() + Size, ChunkSize));
|
|
if (!ReadBytes)
|
|
return ReadBytes.takeError();
|
|
if (*ReadBytes == 0)
|
|
return Error::success();
|
|
Size += *ReadBytes;
|
|
}
|
|
}
|
|
|
|
} // end namespace fs
|
|
} // end namespace sys
|
|
} // end namespace llvm
|
|
|
|
// Include the truly platform-specific parts.
|
|
#if defined(LLVM_ON_UNIX)
|
|
#include "Unix/Path.inc"
|
|
#endif
|
|
#if defined(_WIN32)
|
|
#include "Windows/Path.inc"
|
|
#endif
|
|
|
|
namespace llvm {
|
|
namespace sys {
|
|
namespace fs {
|
|
TempFile::TempFile(StringRef Name, int FD)
|
|
: TmpName(std::string(Name)), FD(FD) {}
|
|
TempFile::TempFile(TempFile &&Other) { *this = std::move(Other); }
|
|
TempFile &TempFile::operator=(TempFile &&Other) {
|
|
TmpName = std::move(Other.TmpName);
|
|
FD = Other.FD;
|
|
Other.Done = true;
|
|
Other.FD = -1;
|
|
#ifdef _WIN32
|
|
RemoveOnClose = Other.RemoveOnClose;
|
|
Other.RemoveOnClose = false;
|
|
#endif
|
|
return *this;
|
|
}
|
|
|
|
TempFile::~TempFile() { assert(Done); }
|
|
|
|
Error TempFile::discard() {
|
|
Done = true;
|
|
if (FD != -1 && close(FD) == -1) {
|
|
std::error_code EC = std::error_code(errno, std::generic_category());
|
|
return errorCodeToError(EC);
|
|
}
|
|
FD = -1;
|
|
|
|
#ifdef _WIN32
|
|
// On Windows, closing will remove the file, if we set the delete
|
|
// disposition. If not, remove it manually.
|
|
bool Remove = RemoveOnClose;
|
|
#else
|
|
// Always try to remove the file.
|
|
bool Remove = true;
|
|
#endif
|
|
std::error_code RemoveEC;
|
|
if (Remove && !TmpName.empty()) {
|
|
RemoveEC = fs::remove(TmpName);
|
|
sys::DontRemoveFileOnSignal(TmpName);
|
|
if (!RemoveEC)
|
|
TmpName = "";
|
|
} else {
|
|
TmpName = "";
|
|
}
|
|
return errorCodeToError(RemoveEC);
|
|
}
|
|
|
|
Error TempFile::keep(const Twine &Name) {
|
|
assert(!Done);
|
|
Done = true;
|
|
// Always try to close and rename.
|
|
#ifdef _WIN32
|
|
// If we can't cancel the delete don't rename.
|
|
auto H = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
|
|
std::error_code RenameEC =
|
|
RemoveOnClose ? std::error_code() : setDeleteDisposition(H, false);
|
|
bool ShouldDelete = false;
|
|
if (!RenameEC) {
|
|
RenameEC = rename_handle(H, Name);
|
|
// If rename failed because it's cross-device, copy instead
|
|
if (RenameEC ==
|
|
std::error_code(ERROR_NOT_SAME_DEVICE, std::system_category())) {
|
|
RenameEC = copy_file(TmpName, Name);
|
|
ShouldDelete = true;
|
|
}
|
|
}
|
|
|
|
// If we can't rename or copy, discard the temporary file.
|
|
if (RenameEC)
|
|
ShouldDelete = true;
|
|
if (ShouldDelete) {
|
|
if (!RemoveOnClose)
|
|
setDeleteDisposition(H, true);
|
|
else
|
|
remove(TmpName);
|
|
}
|
|
#else
|
|
std::error_code RenameEC = fs::rename(TmpName, Name);
|
|
if (RenameEC) {
|
|
// If we can't rename, try to copy to work around cross-device link issues.
|
|
RenameEC = sys::fs::copy_file(TmpName, Name);
|
|
// If we can't rename or copy, discard the temporary file.
|
|
if (RenameEC)
|
|
remove(TmpName);
|
|
}
|
|
#endif
|
|
sys::DontRemoveFileOnSignal(TmpName);
|
|
|
|
if (!RenameEC)
|
|
TmpName = "";
|
|
|
|
if (close(FD) == -1) {
|
|
std::error_code EC(errno, std::generic_category());
|
|
return errorCodeToError(EC);
|
|
}
|
|
FD = -1;
|
|
|
|
return errorCodeToError(RenameEC);
|
|
}
|
|
|
|
Error TempFile::keep() {
|
|
assert(!Done);
|
|
Done = true;
|
|
|
|
#ifdef _WIN32
|
|
auto H = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
|
|
if (std::error_code EC = setDeleteDisposition(H, false))
|
|
return errorCodeToError(EC);
|
|
#endif
|
|
sys::DontRemoveFileOnSignal(TmpName);
|
|
|
|
TmpName = "";
|
|
|
|
if (close(FD) == -1) {
|
|
std::error_code EC(errno, std::generic_category());
|
|
return errorCodeToError(EC);
|
|
}
|
|
FD = -1;
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
Expected<TempFile> TempFile::create(const Twine &Model, unsigned Mode,
|
|
OpenFlags ExtraFlags) {
|
|
int FD;
|
|
SmallString<128> ResultPath;
|
|
if (std::error_code EC =
|
|
createUniqueFile(Model, FD, ResultPath, OF_Delete | ExtraFlags, Mode))
|
|
return errorCodeToError(EC);
|
|
|
|
TempFile Ret(ResultPath, FD);
|
|
#ifdef _WIN32
|
|
auto H = reinterpret_cast<HANDLE>(_get_osfhandle(FD));
|
|
bool SetSignalHandler = false;
|
|
if (std::error_code EC = setDeleteDisposition(H, true)) {
|
|
Ret.RemoveOnClose = true;
|
|
SetSignalHandler = true;
|
|
}
|
|
#else
|
|
bool SetSignalHandler = true;
|
|
#endif
|
|
if (SetSignalHandler && sys::RemoveFileOnSignal(ResultPath)) {
|
|
// Make sure we delete the file when RemoveFileOnSignal fails.
|
|
consumeError(Ret.discard());
|
|
std::error_code EC(errc::operation_not_permitted);
|
|
return errorCodeToError(EC);
|
|
}
|
|
return std::move(Ret);
|
|
}
|
|
} // namespace fs
|
|
|
|
} // namespace sys
|
|
} // namespace llvm
|