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Remove Path::getMagicNumber.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183839 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-06-12 15:07:11 +00:00
parent 26ace5720d
commit 2a4005688c
3 changed files with 0 additions and 47 deletions
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8
include/llvm/Support/PathV1.h
View File

@ -219,14 +219,6 @@ namespace sys {
/// @name Disk Accessors
/// @{
public:
/// This function retrieves the first \p len bytes of the file associated
/// with \p this. These bytes are returned as the "magic number" in the
/// \p Magic parameter.
/// @returns true if the Path is a file and the magic number is retrieved,
/// false otherwise.
/// @brief Get the file's magic number.
bool getMagicNumber(std::string& Magic, unsigned len) const;
/// This function determines if the path name in the object references an
/// archive file by looking at its magic number.
/// @returns true if the file starts with the magic number for an archive

14
lib/Support/Unix/Path.inc
View File

@ -303,20 +303,6 @@ Path Path::GetMainExecutable(const char *argv0, void *MainAddr) {
return Path();
}
bool Path::getMagicNumber(std::string &Magic, unsigned len) const {
assert(len < 1024 && "Request for magic string too long");
char Buf[1025];
int fd = ::open(path.c_str(), O_RDONLY);
if (fd < 0)
return false;
ssize_t bytes_read = ::read(fd, Buf, len);
::close(fd);
if (ssize_t(len) != bytes_read)
return false;
Magic.assign(Buf, len);
return true;
}
bool
Path::exists() const {
return 0 == access(path.c_str(), F_OK );

25
lib/Support/Windows/Path.inc
View File

@ -590,31 +590,6 @@ Path::eraseFromDisk(bool remove_contents, std::string *ErrStr) const {
}
}
bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
assert(len < 1024 && "Request for magic string too long");
char* buf = reinterpret_cast<char*>(alloca(len));
HANDLE h = CreateFile(path.c_str(),
GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (h == INVALID_HANDLE_VALUE)
return false;
DWORD nRead = 0;
BOOL ret = ReadFile(h, buf, len, &nRead, NULL);
CloseHandle(h);
if (!ret || nRead != len)
return false;
Magic = std::string(buf, len);
return true;
}
bool
Path::renamePathOnDisk(const Path& newName, std::string* ErrMsg) {
if (!MoveFileEx(path.c_str(), newName.c_str(), MOVEFILE_REPLACE_EXISTING))