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Split openFileForWrite into windows and unix versions.

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It is similar to 186511, but for creating files for writing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186679 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-07-19 15:02:03 +00:00
parent c9c9825c93
commit b1a003f377
4 changed files with 92 additions and 30 deletions
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30
lib/Support/Path.cpp
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@ -692,36 +692,6 @@ error_code createUniqueDirectory(const Twine &Prefix,
true, 0, FS_Dir);
}
error_code openFileForWrite(const Twine &Name, int &ResultFD,
sys::fs::OpenFlags Flags, unsigned Mode) {
// Verify that we don't have both "append" and "excl".
assert((!(Flags & sys::fs::F_Excl) || !(Flags & sys::fs::F_Append)) &&
"Cannot specify both 'excl' and 'append' file creation flags!");
int OpenFlags = O_WRONLY | O_CREAT;
#ifdef O_BINARY
if (Flags & F_Binary)
OpenFlags |= O_BINARY;
#endif
if (Flags & F_Append)
OpenFlags |= O_APPEND;
else
OpenFlags |= O_TRUNC;
if (Flags & F_Excl)
OpenFlags |= O_EXCL;
SmallString<128> Storage;
StringRef P = Name.toNullTerminatedStringRef(Storage);
while ((ResultFD = open(P.begin(), OpenFlags, Mode)) < 0) {
if (errno != EINTR)
return error_code(errno, system_category());
}
return error_code::success();
}
error_code make_absolute(SmallVectorImpl<char> &path) {
StringRef p(path.data(), path.size());