forked from OSchip/llvm-project
102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
//===- FormatUtil.cpp ----------------------------------------- *- C++ --*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "FormatUtil.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/FormatAdapters.h"
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#include "llvm/Support/FormatVariadic.h"
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using namespace llvm;
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using namespace llvm::pdb;
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std::string llvm::pdb::truncateStringBack(StringRef S, uint32_t MaxLen) {
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if (MaxLen == 0 || S.size() <= MaxLen || S.size() <= 3)
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return S;
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assert(MaxLen >= 3);
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uint32_t FinalLen = std::min<size_t>(S.size(), MaxLen - 3);
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S = S.take_front(FinalLen);
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return std::string(S) + std::string("...");
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}
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std::string llvm::pdb::truncateStringMiddle(StringRef S, uint32_t MaxLen) {
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if (MaxLen == 0 || S.size() <= MaxLen || S.size() <= 3)
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return S;
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assert(MaxLen >= 3);
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uint32_t FinalLen = std::min<size_t>(S.size(), MaxLen - 3);
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StringRef Front = S.take_front(FinalLen / 2);
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StringRef Back = S.take_back(Front.size());
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return std::string(Front) + std::string("...") + std::string(Back);
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}
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std::string llvm::pdb::truncateStringFront(StringRef S, uint32_t MaxLen) {
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if (MaxLen == 0 || S.size() <= MaxLen || S.size() <= 3)
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return S;
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assert(MaxLen >= 3);
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S = S.take_back(MaxLen - 3);
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return std::string("...") + std::string(S);
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}
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std::string llvm::pdb::truncateQuotedNameFront(StringRef Label, StringRef Name,
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uint32_t MaxLen) {
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uint32_t RequiredExtraChars = Label.size() + 1 + 2;
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if (MaxLen == 0 || RequiredExtraChars + Name.size() <= MaxLen)
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return formatv("{0} \"{1}\"", Label, Name).str();
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assert(MaxLen >= RequiredExtraChars);
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std::string TN = truncateStringFront(Name, MaxLen - RequiredExtraChars);
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return formatv("{0} \"{1}\"", Label, TN).str();
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}
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std::string llvm::pdb::truncateQuotedNameBack(StringRef Label, StringRef Name,
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uint32_t MaxLen) {
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uint32_t RequiredExtraChars = Label.size() + 1 + 2;
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if (MaxLen == 0 || RequiredExtraChars + Name.size() <= MaxLen)
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return formatv("{0} \"{1}\"", Label, Name).str();
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assert(MaxLen >= RequiredExtraChars);
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std::string TN = truncateStringBack(Name, MaxLen - RequiredExtraChars);
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return formatv("{0} \"{1}\"", Label, TN).str();
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}
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std::string llvm::pdb::typesetItemList(ArrayRef<std::string> Opts,
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uint32_t IndentLevel, uint32_t GroupSize,
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StringRef Sep) {
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std::string Result;
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while (!Opts.empty()) {
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ArrayRef<std::string> ThisGroup;
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ThisGroup = Opts.take_front(GroupSize);
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Opts = Opts.drop_front(ThisGroup.size());
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Result += join(ThisGroup, Sep);
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if (!Opts.empty()) {
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Result += Sep;
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Result += "\n";
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Result += formatv("{0}", fmt_repeat(' ', IndentLevel));
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}
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}
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return Result;
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}
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std::string llvm::pdb::typesetStringList(uint32_t IndentLevel,
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ArrayRef<StringRef> Strings) {
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std::string Result = "[";
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for (const auto &S : Strings) {
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Result += formatv("\n{0}{1}", fmt_repeat(' ', IndentLevel), S);
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}
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Result += "]";
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return Result;
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}
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std::string llvm::pdb::formatSegmentOffset(uint16_t Segment, uint32_t Offset) {
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return formatv("{0:4}:{1:4}", Segment, Offset);
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}
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