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Add a can_write function to PathV2.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184233 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-06-18 20:56:38 +00:00
parent 41502e1af7
commit 68ba1825fc
3 changed files with 24 additions and 0 deletions
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6
include/llvm/Support/FileSystem.h
View File

@ -356,6 +356,12 @@ inline bool exists(const Twine &path) {
/// @returns True if we can execute it, false otherwise.
bool can_execute(const Twine &Path);
/// @brief Can we write this file?
///
/// @param Path Input path.
/// @returns True if we can write to it, false otherwise.
bool can_write(const Twine &Path);
/// @brief Do file_status's represent the same thing?
///
/// @param A Input file_status.

6
lib/Support/Unix/PathV2.inc
View File

@ -308,6 +308,12 @@ error_code exists(const Twine &path, bool &result) {
return error_code::success();
}
bool can_write(const Twine &Path) {
SmallString<128> PathStorage;
StringRef P = Path.toNullTerminatedStringRef(PathStorage);
return 0 == access(P.begin(), W_OK);
}
bool can_execute(const Twine &Path) {
SmallString<128> PathStorage;
StringRef P = Path.toNullTerminatedStringRef(PathStorage);

12
lib/Support/Windows/PathV2.inc
View File

@ -362,6 +362,18 @@ error_code exists(const Twine &path, bool &result) {
return error_code::success();
}
bool can_write(const Twine &Path) {
// FIXME: take security attributes into account.
SmallString<128> PathStorage;
SmallVector<wchar_t, 128> PathUtf16;
if (UTF8ToUTF16(Path.toStringRef(PathStorage), PathUtf16))
return false;
DWORD Attr = ::GetFileAttributesW(PathUtf16.begin());
return (Attr != INVALID_FILE_ATTRIBUTES) && !(Attr & FILE_ATTRIBUTE_READONLY);
}
bool can_execute(const Twine &Path) {
SmallString<128> PathStorage;
SmallVector<wchar_t, 128> PathUtf16;