1 //===- CommonConfig.cpp ---------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "llvm/ObjCopy/CommonConfig.h"
10 #include "llvm/Support/Errc.h"
11
12 using namespace llvm;
13 using namespace llvm::objcopy;
14
15 Expected<NameOrPattern>
create(StringRef Pattern,MatchStyle MS,function_ref<Error (Error)> ErrorCallback)16 NameOrPattern::create(StringRef Pattern, MatchStyle MS,
17 function_ref<Error(Error)> ErrorCallback) {
18 switch (MS) {
19 case MatchStyle::Literal:
20 return NameOrPattern(Pattern);
21 case MatchStyle::Wildcard: {
22 bool IsPositiveMatch = !Pattern.consume_front("!");
23 Expected<GlobPattern> GlobOrErr = GlobPattern::create(Pattern);
24
25 // If we couldn't create it as a glob, report the error, but try again
26 // with a literal if the error reporting is non-fatal.
27 if (!GlobOrErr) {
28 if (Error E = ErrorCallback(GlobOrErr.takeError()))
29 return std::move(E);
30 return create(Pattern, MatchStyle::Literal, ErrorCallback);
31 }
32
33 return NameOrPattern(std::make_shared<GlobPattern>(*GlobOrErr),
34 IsPositiveMatch);
35 }
36 case MatchStyle::Regex: {
37 Regex RegEx(Pattern);
38 std::string Err;
39 if (!RegEx.isValid(Err))
40 return createStringError(errc::invalid_argument,
41 "cannot compile regular expression \'" +
42 Pattern + "\': " + Err);
43 SmallVector<char, 32> Data;
44 return NameOrPattern(std::make_shared<Regex>(
45 ("^" + Pattern.ltrim('^').rtrim('$') + "$").toStringRef(Data)));
46 }
47 }
48 llvm_unreachable("Unhandled llvm.objcopy.MatchStyle enum");
49 }
50