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-rw-r--r--lib/Support/Path.cpp170
1 files changed, 96 insertions, 74 deletions
diff --git a/lib/Support/Path.cpp b/lib/Support/Path.cpp
index b8d676f..d5a0ec5 100644
--- a/lib/Support/Path.cpp
+++ b/lib/Support/Path.cpp
@@ -11,6 +11,7 @@
//
//===----------------------------------------------------------------------===//
+#include "llvm/Support/Errc.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
@@ -164,12 +165,12 @@ enum FSEntity {
};
// Implemented in Unix/Path.inc and Windows/Path.inc.
-static error_code TempDir(SmallVectorImpl<char> &result);
+static std::error_code TempDir(SmallVectorImpl<char> &result);
-static error_code createUniqueEntity(const Twine &Model, int &ResultFD,
- SmallVectorImpl<char> &ResultPath,
- bool MakeAbsolute, unsigned Mode,
- FSEntity Type) {
+static std::error_code createUniqueEntity(const Twine &Model, int &ResultFD,
+ SmallVectorImpl<char> &ResultPath,
+ bool MakeAbsolute, unsigned Mode,
+ FSEntity Type) {
SmallString<128> ModelStorage;
Model.toVector(ModelStorage);
@@ -177,7 +178,7 @@ static error_code createUniqueEntity(const Twine &Model, int &ResultFD,
// Make model absolute by prepending a temp directory if it's not already.
if (!sys::path::is_absolute(Twine(ModelStorage))) {
SmallString<128> TDir;
- if (error_code EC = TempDir(TDir))
+ if (std::error_code EC = TempDir(TDir))
return EC;
sys::path::append(TDir, Twine(ModelStorage));
ModelStorage.swap(TDir);
@@ -201,7 +202,7 @@ retry_random_path:
// Try to open + create the file.
switch (Type) {
case FS_File: {
- if (error_code EC =
+ if (std::error_code EC =
sys::fs::openFileForWrite(Twine(ResultPath.begin()), ResultFD,
sys::fs::F_RW | sys::fs::F_Excl, Mode)) {
if (EC == errc::file_exists)
@@ -209,26 +210,27 @@ retry_random_path:
return EC;
}
- return error_code::success();
+ return std::error_code();
}
case FS_Name: {
bool Exists;
- error_code EC = sys::fs::exists(ResultPath.begin(), Exists);
+ std::error_code EC = sys::fs::exists(ResultPath.begin(), Exists);
if (EC)
return EC;
if (Exists)
goto retry_random_path;
- return error_code::success();
+ return std::error_code();
}
case FS_Dir: {
- if (error_code EC = sys::fs::create_directory(ResultPath.begin(), false)) {
+ if (std::error_code EC =
+ sys::fs::create_directory(ResultPath.begin(), false)) {
if (EC == errc::file_exists)
goto retry_random_path;
return EC;
}
- return error_code::success();
+ return std::error_code();
}
}
llvm_unreachable("Invalid Type");
@@ -705,29 +707,30 @@ bool is_relative(const Twine &path) {
namespace fs {
-error_code getUniqueID(const Twine Path, UniqueID &Result) {
+std::error_code getUniqueID(const Twine Path, UniqueID &Result) {
file_status Status;
- error_code EC = status(Path, Status);
+ std::error_code EC = status(Path, Status);
if (EC)
return EC;
Result = Status.getUniqueID();
- return error_code::success();
+ return std::error_code();
}
-error_code createUniqueFile(const Twine &Model, int &ResultFd,
- SmallVectorImpl<char> &ResultPath, unsigned Mode) {
+std::error_code createUniqueFile(const Twine &Model, int &ResultFd,
+ SmallVectorImpl<char> &ResultPath,
+ unsigned Mode) {
return createUniqueEntity(Model, ResultFd, ResultPath, false, Mode, FS_File);
}
-error_code createUniqueFile(const Twine &Model,
- SmallVectorImpl<char> &ResultPath) {
+std::error_code createUniqueFile(const Twine &Model,
+ SmallVectorImpl<char> &ResultPath) {
int Dummy;
return createUniqueEntity(Model, Dummy, ResultPath, false, 0, FS_Name);
}
-static error_code createTemporaryFile(const Twine &Model, int &ResultFD,
- llvm::SmallVectorImpl<char> &ResultPath,
- FSEntity Type) {
+static std::error_code
+createTemporaryFile(const Twine &Model, int &ResultFD,
+ llvm::SmallVectorImpl<char> &ResultPath, FSEntity Type) {
SmallString<128> Storage;
StringRef P = Model.toNullTerminatedStringRef(Storage);
assert(P.find_first_of(separators) == StringRef::npos &&
@@ -737,24 +740,22 @@ static error_code createTemporaryFile(const Twine &Model, int &ResultFD,
true, owner_read | owner_write, Type);
}
-static error_code
+static std::error_code
createTemporaryFile(const Twine &Prefix, StringRef Suffix, int &ResultFD,
- llvm::SmallVectorImpl<char> &ResultPath,
- FSEntity Type) {
+ llvm::SmallVectorImpl<char> &ResultPath, FSEntity Type) {
const char *Middle = Suffix.empty() ? "-%%%%%%" : "-%%%%%%.";
return createTemporaryFile(Prefix + Middle + Suffix, ResultFD, ResultPath,
Type);
}
-
-error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
- int &ResultFD,
- SmallVectorImpl<char> &ResultPath) {
+std::error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
+ int &ResultFD,
+ SmallVectorImpl<char> &ResultPath) {
return createTemporaryFile(Prefix, Suffix, ResultFD, ResultPath, FS_File);
}
-error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
- SmallVectorImpl<char> &ResultPath) {
+std::error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
+ SmallVectorImpl<char> &ResultPath) {
int Dummy;
return createTemporaryFile(Prefix, Suffix, Dummy, ResultPath, FS_Name);
}
@@ -762,14 +763,14 @@ error_code createTemporaryFile(const Twine &Prefix, StringRef Suffix,
// This is a mkdtemp with a different pattern. We use createUniqueEntity mostly
// for consistency. We should try using mkdtemp.
-error_code createUniqueDirectory(const Twine &Prefix,
- SmallVectorImpl<char> &ResultPath) {
+std::error_code createUniqueDirectory(const Twine &Prefix,
+ SmallVectorImpl<char> &ResultPath) {
int Dummy;
return createUniqueEntity(Prefix + "-%%%%%%", Dummy, ResultPath,
true, 0, FS_Dir);
}
-error_code make_absolute(SmallVectorImpl<char> &path) {
+std::error_code make_absolute(SmallVectorImpl<char> &path) {
StringRef p(path.data(), path.size());
bool rootDirectory = path::has_root_directory(p),
@@ -781,11 +782,12 @@ error_code make_absolute(SmallVectorImpl<char> &path) {
// Already absolute.
if (rootName && rootDirectory)
- return error_code::success();
+ return std::error_code();
// All of the following conditions will need the current directory.
SmallString<128> current_dir;
- if (error_code ec = current_path(current_dir)) return ec;
+ if (std::error_code ec = current_path(current_dir))
+ return ec;
// Relative path. Prepend the current directory.
if (!rootName && !rootDirectory) {
@@ -793,7 +795,7 @@ error_code make_absolute(SmallVectorImpl<char> &path) {
path::append(current_dir, p);
// Set path to the result.
path.swap(current_dir);
- return error_code::success();
+ return std::error_code();
}
if (!rootName && rootDirectory) {
@@ -802,7 +804,7 @@ error_code make_absolute(SmallVectorImpl<char> &path) {
path::append(curDirRootName, p);
// Set path to the result.
path.swap(curDirRootName);
- return error_code::success();
+ return std::error_code();
}
if (rootName && !rootDirectory) {
@@ -814,19 +816,19 @@ error_code make_absolute(SmallVectorImpl<char> &path) {
SmallString<128> res;
path::append(res, pRootName, bRootDirectory, bRelativePath, pRelativePath);
path.swap(res);
- return error_code::success();
+ return std::error_code();
}
llvm_unreachable("All rootName and rootDirectory combinations should have "
"occurred above!");
}
-error_code create_directories(const Twine &Path, bool IgnoreExisting) {
+std::error_code create_directories(const Twine &Path, bool IgnoreExisting) {
SmallString<128> PathStorage;
StringRef P = Path.toStringRef(PathStorage);
// Be optimistic and try to create the directory
- error_code EC = create_directory(P, IgnoreExisting);
+ std::error_code EC = create_directory(P, IgnoreExisting);
// If we succeeded, or had any error other than the parent not existing, just
// return it.
if (EC != errc::no_such_file_or_directory)
@@ -844,6 +846,40 @@ error_code create_directories(const Twine &Path, bool IgnoreExisting) {
return create_directory(P, IgnoreExisting);
}
+std::error_code copy_file(const Twine &From, const Twine &To) {
+ int ReadFD, WriteFD;
+ if (std::error_code EC = openFileForRead(From, ReadFD))
+ return EC;
+ if (std::error_code EC = openFileForWrite(To, WriteFD, F_None)) {
+ close(ReadFD);
+ return EC;
+ }
+
+ 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;
+ }
+ close(ReadFD);
+ close(WriteFD);
+ delete[] Buf;
+
+ if (BytesRead < 0 || BytesWritten < 0)
+ return std::error_code(errno, std::generic_category());
+ return std::error_code();
+}
+
bool exists(file_status status) {
return status_known(status) && status.type() != file_type::file_not_found;
}
@@ -856,24 +892,24 @@ bool is_directory(file_status status) {
return status.type() == file_type::directory_file;
}
-error_code is_directory(const Twine &path, bool &result) {
+std::error_code is_directory(const Twine &path, bool &result) {
file_status st;
- if (error_code ec = status(path, st))
+ if (std::error_code ec = status(path, st))
return ec;
result = is_directory(st);
- return error_code::success();
+ return std::error_code();
}
bool is_regular_file(file_status status) {
return status.type() == file_type::regular_file;
}
-error_code is_regular_file(const Twine &path, bool &result) {
+std::error_code is_regular_file(const Twine &path, bool &result) {
file_status st;
- if (error_code ec = status(path, st))
+ if (std::error_code ec = status(path, st))
return ec;
result = is_regular_file(st);
- return error_code::success();
+ return std::error_code();
}
bool is_other(file_status status) {
@@ -890,26 +926,8 @@ void directory_entry::replace_filename(const Twine &filename, file_status st) {
Status = st;
}
-error_code has_magic(const Twine &path, const Twine &magic, bool &result) {
- SmallString<32> MagicStorage;
- StringRef Magic = magic.toStringRef(MagicStorage);
- SmallString<32> Buffer;
-
- if (error_code ec = get_magic(path, Magic.size(), Buffer)) {
- if (ec == errc::value_too_large) {
- // Magic.size() > file_size(Path).
- result = false;
- return error_code::success();
- }
- return ec;
- }
-
- result = Magic == Buffer;
- return error_code::success();
-}
-
/// @brief Identify the magic in magic.
- file_magic identify_magic(StringRef Magic) {
+file_magic identify_magic(StringRef Magic) {
if (Magic.size() < 4)
return file_magic::unknown;
switch ((unsigned char)Magic[0]) {
@@ -1040,17 +1058,21 @@ error_code has_magic(const Twine &path, const Twine &magic, bool &result) {
return file_magic::unknown;
}
-error_code identify_magic(const Twine &path, file_magic &result) {
- SmallString<32> Magic;
- error_code ec = get_magic(path, Magic.capacity(), Magic);
- if (ec && ec != errc::value_too_large)
- return ec;
+std::error_code identify_magic(const Twine &Path, file_magic &Result) {
+ int FD;
+ if (std::error_code EC = openFileForRead(Path, FD))
+ return EC;
+
+ char Buffer[32];
+ int Length = read(FD, Buffer, sizeof(Buffer));
+ if (close(FD) != 0 || Length < 0)
+ return std::error_code(errno, std::generic_category());
- result = identify_magic(Magic);
- return error_code::success();
+ Result = identify_magic(StringRef(Buffer, Length));
+ return std::error_code();
}
-error_code directory_entry::status(file_status &result) const {
+std::error_code directory_entry::status(file_status &result) const {
return fs::status(Path, result);
}
generated by cgit v1.1 at 2024-05-26 12:04:14 +0000