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//===- Strings.cpp -------------------------------------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Strings.h"
#include "Config.h"
#include "lld/Common/ErrorHandler.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Demangle/Demangle.h"
#include <algorithm>
#include <cstring>
using namespace llvm;
using namespace lld;
using namespace lld::elf;
StringMatcher::StringMatcher(ArrayRef<StringRef> Pat) {
for (StringRef S : Pat) {
Expected<GlobPattern> Pat = GlobPattern::create(S);
if (!Pat)
error(toString(Pat.takeError()));
else
Patterns.push_back(*Pat);
}
}
bool StringMatcher::match(StringRef S) const {
for (const GlobPattern &Pat : Patterns)
if (Pat.match(S))
return true;
return false;
}
// Converts a hex string (e.g. "deadbeef") to a vector.
std::vector<uint8_t> elf::parseHex(StringRef S) {
std::vector<uint8_t> Hex;
while (!S.empty()) {
StringRef B = S.substr(0, 2);
S = S.substr(2);
uint8_t H;
if (!to_integer(B, H, 16)) {
error("not a hexadecimal value: " + B);
return {};
}
Hex.push_back(H);
}
return Hex;
}
// Returns true if S is valid as a C language identifier.
bool elf::isValidCIdentifier(StringRef S) {
return !S.empty() && (isAlpha(S[0]) || S[0] == '_') &&
std::all_of(S.begin() + 1, S.end(),
[](char C) { return C == '_' || isAlnum(C); });
}
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