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[Support/FileSystem] Introduce llvm::sys::fs::create_symbolic_link().

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203136 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Argyrios Kyrtzidis
2014-03-06 17:36:46 +00:00
parent 161e3a80b2
commit bd3f9c0b6b
3 changed files with 40 additions and 0 deletions
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8
include/llvm/Support/FileSystem.h
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@@ -293,6 +293,14 @@ error_code create_directory(const Twine &path, bool IgnoreExisting = true);
/// , otherwise a platform specific error_code. /// , otherwise a platform specific error_code.
error_code create_hard_link(const Twine &to, const Twine &from); error_code create_hard_link(const Twine &to, const Twine &from);
/// @brief Create a symbolic link from \a from to \a to.
///
/// @param to The path to link to.
/// @param from The path to link from. This is created.
/// @returns errc::success if successful
/// , otherwise a platform specific error_code.
error_code create_symbolic_link(const Twine &to, const Twine &from);
/// @brief Get the current path. /// @brief Get the current path.
/// ///
/// @param result Holds the current path on return. /// @param result Holds the current path on return.

13
lib/Support/Unix/Path.inc
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@@ -285,6 +285,19 @@ error_code create_hard_link(const Twine &to, const Twine &from) {
return error_code::success(); return error_code::success();
} }
error_code create_symbolic_link(const Twine &to, const Twine &from) {
// Get arguments.
SmallString<128> from_storage;
SmallString<128> to_storage;
StringRef f = from.toNullTerminatedStringRef(from_storage);
StringRef t = to.toNullTerminatedStringRef(to_storage);
if (::symlink(t.begin(), f.begin()) == -1)
return error_code(errno, system_category());
return error_code::success();
}
error_code remove(const Twine &path, bool IgnoreNonExisting) { error_code remove(const Twine &path, bool IgnoreNonExisting) {
SmallString<128> path_storage; SmallString<128> path_storage;
StringRef p = path.toNullTerminatedStringRef(path_storage); StringRef p = path.toNullTerminatedStringRef(path_storage);

19
lib/Support/Windows/Path.inc
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@@ -177,6 +177,25 @@ error_code create_hard_link(const Twine &to, const Twine &from) {
return error_code::success(); return error_code::success();
} }
error_code create_symbolic_link(const Twine &to, const Twine &from) {
// Get arguments.
SmallString<128> from_storage;
SmallString<128> to_storage;
StringRef f = from.toStringRef(from_storage);
StringRef t = to.toStringRef(to_storage);
// Convert to utf-16.
SmallVector<wchar_t, 128> wide_from;
SmallVector<wchar_t, 128> wide_to;
if (error_code ec = UTF8ToUTF16(f, wide_from)) return ec;
if (error_code ec = UTF8ToUTF16(t, wide_to)) return ec;
if (!::CreateSymbolicLinkW(wide_from.begin(), wide_to.begin(), NULL))
return windows_error(::GetLastError());
return error_code::success();
}
error_code remove(const Twine &path, bool IgnoreNonExisting) { error_code remove(const Twine &path, bool IgnoreNonExisting) {
SmallString<128> path_storage; SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16; SmallVector<wchar_t, 128> path_utf16;