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
12using namespace llvm;
13using namespace llvm::objcopy;
14
15Expected<NameOrPattern>
16NameOrPattern::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(Prefix: "!");
23 Expected<GlobPattern> GlobOrErr = GlobPattern::create(Pat: 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, MS: MatchStyle::Literal, ErrorCallback);
31 }
32
33 return NameOrPattern(std::make_shared<GlobPattern>(args&: *GlobOrErr),
34 IsPositiveMatch);
35 }
36 case MatchStyle::Regex: {
37 Regex RegEx(Pattern);
38 std::string Err;
39 if (!RegEx.isValid(Error&: Err))
40 return createStringError(EC: errc::invalid_argument,
41 S: "cannot compile regular expression \'" +
42 Pattern + "\': " + Err);
43 SmallVector<char, 32> Data;
44 return NameOrPattern(std::make_shared<Regex>(
45 args: ("^" + Pattern.ltrim(Char: '^').rtrim(Char: '$') + "$").toStringRef(Out&: Data)));
46 }
47 }
48 llvm_unreachable("Unhandled llvm.objcopy.MatchStyle enum");
49}
50