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Support/PathV2: Add replace_extension implementation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120514 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2010-12-01 00:52:55 +00:00
parent dbfb56bebd
commit 52ed867801
2 changed files with 24 additions and 0 deletions
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20
lib/Support/PathV2.cpp
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@ -511,6 +511,26 @@ error_code remove_filename(SmallVectorImpl<char> &path) {
return make_error_code(errc::success);
}
error_code replace_extension(SmallVectorImpl<char> &path,
const Twine &extension) {
StringRef p(path.begin(), path.size());
SmallString<32> ext_storage;
StringRef ext = extension.toStringRef(ext_storage);
// Erase existing extension.
size_t pos = p.find_last_of('.');
if (pos != StringRef::npos && pos >= filename_pos(p))
path.set_size(pos);
// Append '.' if needed.
if (ext.size() > 0 && ext[0] != '.')
path.push_back('.');
// Append extension.
path.append(ext.begin(), ext.end());
return make_error_code(errc::success);
}
}
}
}