17int main(
int argc,
char *argv[]) {
18 auto ErrorOrBuffer = MemoryBuffer::getFile(argv[1],
true);
21 std::unique_ptr<MemoryBuffer> Buffer = std::move(ErrorOrBuffer.get());
22 StringRef Content = Buffer->getBuffer();
23 Content = Content.drop_until([](
char C) {
return C ==
'#'; });
24 SmallVector<StringRef> Lines;
25 SplitString(Content, Lines,
"\r\n");
27 std::vector<std::pair<llvm::UTF32, SmallVector<llvm::UTF32>>> Entries;
28 SmallVector<StringRef> Values;
29 for (StringRef Line : Lines) {
30 if (Line.starts_with(
"#"))
34 Line.split(Values,
';');
35 if (Values.size() < 2) {
36 errs() <<
"Failed to parse: " << Line <<
"\n";
40 llvm::StringRef From = Values[0].trim();
41 llvm::UTF32 CodePoint = 0;
42 From.getAsInteger(16, CodePoint);
44 SmallVector<llvm::UTF32> To;
45 SmallVector<StringRef> ToN;
46 Values[1].split(ToN,
' ', -1,
false);
47 for (StringRef ToI : ToN) {
48 llvm::UTF32 ToCodePoint = 0;
49 ToI.trim().getAsInteger(16, ToCodePoint);
50 To.push_back(ToCodePoint);
55 Entries.emplace_back(CodePoint, To);
59 unsigned LargestValue =
60 llvm::max_element(Entries, [](
const auto &Entry0,
const auto &Entry1) {
61 return Entry0.second.size() < Entry1.second.size();
65 llvm::raw_fd_ostream Os(argv[2], Ec);
69 Os <<
"struct {llvm::UTF32 codepoint; llvm::UTF32 values[" << LargestValue
71 "ConfusableEntries[] = {\n";
72 for (
const auto &Values : Entries) {
76 for (
auto CP : Values.second)