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Support/PathV2: Implement remove_all.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122884 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer 2011-01-05 16:39:38 +00:00
parent 277fa1047b
commit 7fd682aaf2
1 changed files with 37 additions and 0 deletions
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37
lib/Support/PathV2.cpp
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@ -697,6 +697,43 @@ error_code has_magic(const Twine &path, const Twine &magic, bool &result) {
return success;
}
namespace {
error_code remove_all_r(StringRef path, file_type ft, uint32_t &count) {
if (ft == file_type::directory_file) {
// This code would be a lot better with exceptions ;/.
error_code ec;
for (directory_iterator i(path, ec), e; i != e; i.increment(ec)) {
if (ec) return ec;
file_status st;
if (error_code ec = i->status(st)) return ec;
if (error_code ec = remove_all_r(i->path(), st.type(), count)) return ec;
}
bool obviously_this_exists;
if (error_code ec = remove(path, obviously_this_exists)) return ec;
assert(obviously_this_exists);
++count; // Include the directory itself in the items removed.
} else {
bool obviously_this_exists;
if (error_code ec = remove(path, obviously_this_exists)) return ec;
assert(obviously_this_exists);
++count;
}
return success;
}
}
error_code remove_all(const Twine &path, uint32_t &num_removed) {
SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage);
file_status fs;
if (error_code ec = status(path, fs))
return ec;
num_removed = 0;
return remove_all_r(p, fs.type(), num_removed);
}
error_code directory_entry::status(file_status &result) const {
return fs::status(Path, result);
}